CN110312917A - Pipe component - Google Patents

Abstract

Provided is a pipe member from which a tubular window member can be detached without detaching the pipe member from a fluid piping member. The pipe member (100) is inserted between fluid piping members to constitute a part of the fluid piping. The tube member (100) includes a tube member body (102), a tubular window member (104), and a retaining member (106). The tubular window member (104) is made of a transparent material, and the flow path (112) and the blade member (108) inside the tubular window member (104) can be visually recognized from the outside. The tubular window member (104) is held in place within the tubular member body (102) by a retaining member (106). By displacing the holding member (106) backward from the holding position to the release position, the holding member (106) separates from the tubular window member (104) and releases the holding of the tubular window member (104). Thereby, the tubular window member (104) can be detached from the tubular member main body (102) through the side opening (130).

Description

pipe member

technical field

The present invention relates to a pipe member which is inserted between fluid pipe members to constitute a part of the fluid pipe, and more specifically, relates to a pipe member in which a fluid flow in the fluid pipe can be checked.

Background technique

In order to visually confirm the fluid flow in the fluid piping, there is known a pipe member having a structure in which the inside of the flow path can be visually confirmed from a portion made of a transparent material. For example, the flow sensor shown in Patent Document 1 has a transparent tube, pipe fittings screwed to both ends of the tube, and a turbine unit installed in the tube. Axial displacement, by reading the displacement of the turbine can measure the fluid flow and its flow rate.

prior art literature

patent documents

Patent Document 1: Japanese Patent Application Laid-Open No. 58-9025

Contents of the invention

The problem to be solved by the invention

In such a flow sensor as described above, during continuous use, the inner peripheral surface of the tube may be gradually contaminated by the passage of the fluid in the transparent tube and/or solid substances contained in the fluid, and the visibility of the inside of the flow path may deteriorate. In this case, the transparent tube is taken out and the inside is cleaned, or replaced with a new tube. However, in the conventional pipe member such as the flow sensor described above, in order to remove the transparent tube serving as the tubular window member, it is necessary to remove the pipe member itself from the fluid piping member and further disassemble the pipe member. Such an operation is very complicated and takes time.

Therefore, an object of the present invention is to provide a pipe member from which a tubular window member can be detached without detaching the pipe member from the fluid piping member.

means to solve the problem

That is, the present invention provides a pipe member that is inserted between fluid pipe members to constitute a part of fluid pipe, wherein the pipe member includes:

a pipe member main body that defines the first passage, the pipe member main body has a side opening that is open to communicate with the first passage from the side with respect to the long axis of the first passage;

A tubular window member is installed into the pipe member body through the side opening, and the tubular window member is configured to communicate with the first passage when the tubular window member is installed in the pipe member body. The second passage of the flow path of the pipe member, and at least a part of the tubular window member is made of a transparent material, through which the inside of the flow path can be visually confirmed;

a retaining member mounted to the tubular member body, the retaining member being displaceable between a retaining position and a release position in which the retaining member is engaged with the tubular window member to retain the tubular window member At the position where the pipe member main body is installed, at the release position, the holding member is separated from the tubular window member to release the holding of the tubular window member, and can be detached from the pipe member main body through the side opening. Lower the tubular window member.

In this pipe member, since the tubular window member can be detached through the side opening of the pipe member main body, it is not necessary to detach the pipe member itself from the fluid piping member when detaching the tubular window member as in the past.

Preferably, the holding member is slidably mounted to the pipe member body in the direction of the major axis between the holding position and the releasing position,

In the state where the holding member is at the release position, the tubular window member is displaceable between a fitting position fitted into the pipe member body and a communication releasing position in the direction of the long axis. Displaced from the loading position to release the communication between the first passage and the second passage,

The tubular window member is provided so as to be detachable from the tubular member main body through the side opening at the communication release position.

In addition, it is preferable that the pipe member main body has a cylindrical front portion, a cylindrical rear portion, and an intermediate portion between the front portion and the rear portion, the side opening is formed in the intermediate portion,

The tubular window member matches the tubular member body in the direction of the long axis to sealingly engage with the front portion at the loading position,

The holding member is formed as a cylindrical member having a third passage sealingly engaged with the tubular window member and the rear portion at the holding position, thereby being constituted by the third passage together with the first passage and the second passage. The flow path of the pipe member.

And, in a state where the tubular window member is detached from the pipe member main body, the holding member can be detached from the pipe member main body through the side opening.

With such a configuration, cleaning and replacement of the holding member becomes easy.

Preferably, the holding member has a protrusion protruding radially outward from the outer peripheral surface of the holding member, the pipe member main body has a receiving recess for receiving the protrusion,

The holding member is configured to be rotatable about the long axis relative to the pipe member body when in the holding position, at a matching rotational position where the protrusion matches the receiving recess in the direction of the long axis When the protrusion is received in the receiving recess, and the holding member can be displaced to the release position, when not in the mating rotation position, the protrusion interferes with the pipe member body so that the holding member cannot be displaced to the release position.

With such a configuration, it is possible to prevent the holding member from being erroneously displaced from the holding position to the releasing position by keeping the holding member from shifting from the matching rotation position.

Preferably, the protruding portion has a locking extension extending along the outer peripheral surface of the pipe member main body, and the outer peripheral surface of the pipe member main body and the inner surface of the locking extension facing the outer peripheral surface A locking protrusion is provided on one side, and a locking recess is provided on the outer peripheral surface of the pipe member main body and the inner surface of the locking extension facing the outer peripheral surface. When the matching rotation position is rotated to become the lock rotation position, the lock protrusion engages with the lock recess to inhibit rotation of the holding member.

Alternatively, instead of the above configuration, it may be set as:

The protruding portion has a locking protrusion on a sliding engagement surface that slides and engages with the tubular window member,

The tubular window member has a locking recess receiving the locking protrusion,

When the holding member rotates from the mating rotational position to the locking rotational position at the holding position, the locking protrusion engages with the locking recess to inhibit rotation of the holding member.

In this case, a flexible portion having flexibility in the direction of the major axis may be provided on the sliding engagement surface of the holding member, and the locking protrusion may be provided on the flexible portion.

With such a configuration, it is possible to prevent the holding member from being erroneously rotated from the locking rotation position to the engaging rotation position, and thus it is possible to more reliably prevent the holding member from being erroneously displaced to the release position.

Preferably, the tubular member main body has a guide surface formed on the side edge of the side opening and extends in the direction of the long axis, and the tubular window member has a guide surface extending radially from the outer peripheral surface of the tubular window member. The guide part protruding outside,

When the tubular window member is inserted into the first passage from the side opening and is located at the communication release position, the guide portion abuts against the guide surface so that the tubular window member is positioned in the direction of the major axis. In a position matched with the pipe member main body, the guide portion slides on the guide surface when the tubular window member is displaced from the communication release position to the insertion position.

With such a configuration, alignment becomes easy when attaching the tubular window member to the tubular member main body.

It is preferable to further include a flow display member disposed in the second passage of the tubular window member and displaced by fluid flowing in the flow passage.

Specifically, the flow display member is configured as a blade member mounted to the tubular window member in a manner to be rotatable in a circumferential direction relative to the major axis, and the flow display member can be removed from the tubular window member together with the tubular window member. The main body of the component is removed.

By having such a flow display member, the presence or absence of fluid flow in the flow path of the pipe member can be easily confirmed visually. In addition, since the blade member is also removed together, cleaning and replacement of the blade member become easy.

Preferably, the tubular window member has a window outer peripheral surface exposed to the outside when it is installed in the tubular member main body, and a window inner peripheral surface located radially inward of the window outer peripheral surface, through which the window outer peripheral surface can be penetrated. and the inner peripheral surface of the window to visually confirm the inside of the second passage, the shape of the outer peripheral surface of the window is formed such that the center of curvature of the outer peripheral surface of the window is located between the center of curvature of the inner peripheral surface of the window and the outer peripheral surface of the window . Specifically, the cross-sections of the outer peripheral surface of the window and the inner peripheral surface of the window may be respectively arc-shaped.

By making the window outer peripheral surface and the window inner peripheral surface into the above-mentioned shape, the vane member arranged in the tubular window member can be seen to be further enlarged, so that the rotation of the vane member can be confirmed more easily.

Preferably, the side opening has a first side opening and a second side opening formed at radially opposite positions of the first passage, and the side opening can pass through the first side opening and the second side opening. Either one of the two side openings is used to install the tubular window member to the main body of the tubular member.

If there is only one side opening, when the pipe member is installed between fluid piping members, the side opening faces the wall side or the like, making attachment and detachment of the tubular window member difficult. By providing two side openings at positions facing each other in the radial direction, the possibility of the above-mentioned state can be reduced.

Hereinafter, embodiments of the pipe member according to the present invention will be described based on the drawings.

Description of drawings

FIG. 1 is a perspective view showing an assembled state of a pipe member according to a first embodiment of the present invention.

Fig. 2 is an exploded perspective view of the pipe member of Fig. 1 .

Fig. 3 is a plan view of the pipe member of Fig. 1 .

Fig. 4 is a side view of the pipe member of Fig. 1 .

Fig. 5 is a cross-sectional view taken along line V-V in Fig. 3 .

Fig. 6 is a sectional view taken along line VI-VI of Fig. 4 .

Fig. 7 is a first view showing the mounting and detaching operation of the tubular window member in the pipe member of Fig. 1 , and is a view showing a state in which the holding member is located at a matching rotation position.

Fig. 8 is a second view showing the mounting and detaching operation of the tubular window member in the pipe member of Fig. 1 , and is a view showing a state where the holding member is located at the release position.

Fig. 9 is a third diagram showing the installation and detachment of the tubular window member in the pipe member of Fig. 1 , and is a diagram showing a state where the tubular window member is located at a communication release position.

Fig. 10 is a fourth view showing the installation and detachment operation of the tubular window member in the pipe member of Fig. 1 , and is a view showing a state in which the tubular window member is detached from the pipe member main body.

Fig. 11 is a fifth view showing the mounting and detaching operation of the tubular window member in the pipe member of Fig. 1 , and is a view showing a state in which the holding member is pulled out from the pipe member main body.

Fig. 12 is a sixth view showing the installation and detachment operation of the tubular window member in the pipe member of Fig. 1 , and is a view showing a state where the holding member is detached from the pipe member main body.

Fig. 13 is a cross-sectional view of the member for visually checking the flow, showing a state where the blade member is located at the second position after being removed from the pipe member main body.

Fig. 14 is a view showing the flow visual confirmation member of Fig. 13 , showing a state in which the vane member is detached from the tubular window member.

Fig. 15 is a sectional view taken along line XV-XV in Fig. 10 .

Fig. 16 is a side sectional view of a pipe member according to a second embodiment of the present invention.

Fig. 17 is a perspective view of a pipe member according to a third embodiment of the present invention.

Fig. 18 is a perspective view of a pipe member according to a fourth embodiment of the present invention.

19 is an exploded perspective view of a tubular window member, vane member, and retaining member in the pipe member of FIG. 18 .

Fig. 20 is an exploded perspective view of the tubular window member, vane member and retaining member of Fig. 19 viewed from a different direction.

Fig. 21 is a side cross-sectional view of the pipe member of Fig. 18 .

Fig. 22 is a cross-sectional view of a pipe member main body in the pipe member of Fig. 18 .

FIG. 23 is a side view of a blade member in the pipe member of FIG. 18 .

FIG. 24 is a front view of the blade member of FIG. 23 .

Fig. 25 is a side sectional view of a pipe member according to a fifth embodiment of the present invention.

Fig. 26 is a perspective view of a pipe member according to a sixth embodiment of the present invention.

27 is an exploded perspective view of a tubular window member, vane member, and retaining member in the tube member of FIG. 26 .

Fig. 28 is an exploded perspective view of the tubular window member, vane member and retaining member of Fig. 27 viewed from a different direction.

Fig. 29 is a side cross-sectional view of the pipe member of Fig. 26 .

Fig. 30 is a cross-sectional view of a pipe member main body in the pipe member of Fig. 26 .

Detailed ways

As shown in FIGS. 1 to 4 , the pipe member 100 according to the first embodiment of the present invention includes: a pipe member main body 102 connected to fluid piping members (not shown) at both ends; a tubular window mounted on the pipe member main body 102 member 104 and retaining member 106 ; blade member 108 mounted on tubular window member 104 . The pipe member 100 is inserted between fluid piping members to constitute a part of the fluid piping. The tubular window member 104 is entirely made of a transparent material, and the tubular window member 104 and the vane member 108 constitute a visually-recognizable flow member 110 . The blade member 108 disposed inside the tubular window member 104 can be visually recognized from the outside through the transparent tubular window member 104 . The vane member 108 is rotated by the fluid flow in the flow channel 112 of the pipe member 100 , and by visually confirming the rotation of the vane member 108 through the transparent tubular window member 104 , it is possible to confirm the presence or absence of fluid flow in the flow channel 112 .

The pipe member main body 102 is composed of a cylindrical front portion 114, a cylindrical rear portion 116, and an intermediate portion 118 between the front portion and the rear portion. As shown in FIG. 5 , the tube member body 102 defines a first passageway 124 extending from a front opening 120 of the front portion 114 to a rear opening 122 of the rear portion 116 . Internal thread portions 126 for fixing fluid piping members are respectively formed in the front portion 114 and the rear portion 116 . In addition, as shown in FIG. 2 , the middle portion 118 has two strut portions 128 connecting the front portion 114 and the rear portion 116 , and the first passage 124 opposing in the radial direction of the first passage 124 is formed between the strut portions 128 . The side opening 130 and the second side opening 132 . These side openings 130 , 132 are opened so as to communicate with the first passage 124 from the side with respect to the long axis L of the first passage 124 . The rear portion 116 and the middle portion 118 are formed as an integral member, and the front portion 114 is attached to the middle portion 118 so as to be rotatable around the major axis L as a separate member from the rear portion 116 and the middle portion 118 . With such a configuration, when the fluid piping member is already fixed to the internal thread portion 126 of one of the front portion 114 and the rear portion 116, when the fluid piping member is fixed to the other internal thread portion 126, the other can be fixed. When one side is rotated with respect to the fluid piping member to be attached next time, the other female thread portion 126 can be fixed to the piping flow path member without rotating the piping flow path member. In addition, the rotational position of the intermediate portion 118 can be changed so that when the user visually recognizes the blade member 108 through the tubular window member 104 , the pillar portion 128 is located at a position that does not obstruct the visual recognition.

The tubular window member 104 has a cylindrical peripheral wall portion 134 and, as shown in FIG. 5 , defines a second passage 136 inside. 6, the front end portion 138 of the peripheral wall portion 134 is provided with a shaft support portion 140 extending in a manner to cross-section the second passage 136 in the radial direction, and a shaft support portion 140 extending from the center of the shaft support portion 140 is provided. The rotation shaft 142 extends rearward (leftward in the figure) in the direction of the axis L. The tubular window member 104 is installed in the tubular member main body 102 in an assembled state, and the front end portion 138 of its peripheral wall portion 134 is inserted inside the front portion 114 of the tubular member main body 102 to match the tubular member main body 102 in the direction of the long axis L. s position. In addition, the front end portion 138 is airtightly engaged with the inner peripheral surface 114 a of the front portion 114 , and the second passage 136 of the tubular window member 104 communicates with the first passage 124 at the front portion 114 of the pipe member main body 102 .

The blade member 108 has a main body portion 144 extending in the direction of the major axis L and two blades 146 spirally formed on an outer peripheral surface 144 a of the main body portion 144 . The main body portion 144 of the blade member 108 constitutes a cylindrical shaft holding portion 144 that holds the rotation shaft 142 of the tubular window member 104 . The shaft holding portion (body portion) 144 holds the rotation shaft 142 of the tubular window member 104 in a rotatable manner relative to the rotation shaft 142 of the tubular window member 104 . Accordingly, the blade member 108 can rotate about the rotation center axis C relative to the rotation shaft 142 . In the assembled state, as shown in FIGS. 5 and 6 , the blade member 108 is in a state where the entirety thereof is located in the second passage 136 of the tubular window member 104 .

The holding member 106 has a cylindrical peripheral wall portion 148 , and as shown in FIG. 5 , a third passage 150 is defined inside the peripheral wall portion 148 . In addition, a blade support portion 152 extending radially across the third passage 150 is provided on the front end surface 148 a of the peripheral wall portion 148 , and the rear end portion 154 of the blade member 108 is supported by the blade support portion 152 from behind. The rear end portion 156 of the holding member 106 is inserted into the rear portion 116 of the pipe member body 102 in an assembled state to be positioned to match the pipe member body 102 in the direction of the long axis L. As shown in FIG. The rear end portion 156 is airtightly engaged with the inner peripheral surface 116 a of the rear portion 116 of the pipe member main body 102 , and the front end portion 158 is airtightly engaged with the rear end portion 160 of the tubular window member 104 . Thus, the third passage 150 of the holding member 106 communicates with the first passage 124 and the second passage 136 , and the third passage 150 constitutes the flow passage 112 of the pipe member 100 together with the first passage 124 and the second passage 136 . As shown in FIGS. 1 and 2 , the holding member 106 further has two protruding portions 162 protruding radially outward from the outer peripheral surface 148 b of the peripheral wall portion 148 . The locking extension 164 extending from 102a. The locking extension 164 is provided with a through hole (locking recess) 166 penetrating to its inner surface, and the through hole 166 receives a ball (locking protrusion) 168 pressed into the outer peripheral surface 102a of the pipe member main body 102 in the assembled state. A part of the pipe member maintains the position of the holding member 106 relative to the pipe member main body 102 in the rotational direction. The holding member 106 can slide relative to the pipe member main body 102 in the direction of the major axis L and the direction of rotation around the major axis L as described later, but as shown in FIGS. 1 , 3 and 4 , the locking extension 164 When the through hole 166 of the through hole 166 is located at the locking rotation position where the ball 168 is locked, the rotation in the circumferential direction is suppressed due to the engagement of the through hole 166 and the ball 168, and since the protrusion 162 interferes with the pipe member main body 102, the pipe member body 102 is held. The member 106 becomes unable to displace rearward in the direction of the major axis L from the holding position where the tubular window member 104 is held in the pipe member main body 102 . It should be noted that the through hole 166 as the locking recess and the ball 168 as the locking protrusion may be arranged oppositely, and the mutual engaging mechanism may be constituted by a structure other than the through hole 166 and the ball 168 .

The tubular window member 104 can be attached and detached in a state where the fluid piping member is connected and fixed to the pipe member main body 102 and the pipe member 100 is incorporated into the fluid piping. The procedure for removing the tubular window member 104 is as follows.

First, by applying to the holding member 106 in the assembled state of FIG. Engagement causes the holding member 106 to rotate from the locking rotation position in FIG. 4 to the mating rotation position in FIG. 7 . In this mating rotational position, the protrusion 162 of the holding member 106 is mated with the receiving recess 170 formed in the rear portion 116 of the pipe member main body 102 in the direction of the major axis L. As shown in FIG. Next, the holding member 106 is displaced rearward in the direction of the major axis L from the holding position in FIG. 7 to the release position in FIG. 8 . At the release position, the holding member 106 is at a position separated from the tubular window member 104 , and the holding of the tubular window member 104 by the holding member 106 is released. It should be noted that, at the matching rotation position, during the process of displacing the holding member 106 from the holding position to the releasing position, the protrusion 162 of the holding member 106 is received in the receiving recess 170 of the pipe member main body 102, thereby The retaining member 106 is displaceable to the release position. On the other hand, even if the holding member 106 is to be displaced rearward from the holding position toward the release position without being in the matched rotation position, the protruding portion 162 of the holding member 106 interferes with the rear portion 116 of the pipe member main body 102 , so the holding member 106 cannot be displaced to the release position. Next, pull the tubular window member 104 backward from the loading position shown in FIG. 8 in which the tubular window member 104 is installed in the pipe member main body 102 so as to draw it out from the front portion 114 of the pipe member main body 102, thereby achieving the communication release shown in FIG. 9 . Location. At this communication release position, the sealing engagement between the tubular window member 104 and the front portion 114 of the pipe member main body 102 is released and the communication between the first passage 124 and the second passage 136 is also released. By pulling out the tubular window member 104 at the communication release position through the first side opening 130 ( FIGS. 1 to 3 ) of the tubular member main body 102 , the tubular window member 104 and the blade member attached to the tubular window member 104 108 together are removed from the pipe member body 102 (FIG. 10). In this way, in this pipe member 100 , when removing the tubular window member 104 , it is not necessary to remove the pipe member main body 102 from the fluid piping member.

When installing the detached tubular window member 104, the above detaching steps are reversed. The tubular window member 104 can be inserted into the pipe member main body 102 through any one of the first side opening 130 and the second side opening 132 . As can be clearly seen from FIG. 2 , guide surfaces 172 extending in the direction of the major axis L are formed on the pillar portions 128 of the pipe member main body 102 as side edges of the first and second side openings 130 , 132 . Further, a guide portion 174 protruding from the outer peripheral surface 104 b is formed on the tubular window member 104 . When the tubular window member 104 is inserted into the tubular member main body 102 through any one of the first side opening and the second side opening 130, 132, the guide portion 174 of the tubular window member 104 and the guide portion 174 of the tubular member main body 102 The guide surface 172 abuts, and the tubular window member 104 is at a matching position with respect to the tubular member main body 102 in the direction of the major axis L, and is coaxial with each other. Utilizing the guide surface 172 and the guide portion 174, the tubular window member 104 does not slip out from the side openings 130, 132 on the side opposite to the side openings 130, 132 through which it was inserted, and the tubular window member The alignment between 104 and the pipe member main body 102 is also facilitated. When the tubular window member 104 is further displaced from the disconnected position in FIG. 9 to the inserted position in FIG. 8 , the guide portion 174 also slides on the guide surface 172 to guide the tubular window member 104 to an appropriate position.

In this pipe member 100, when the tubular window member 104 is detached from the pipe member main body 102 (FIG. 10), as shown in FIG. The rear portion 116 of the pipe member main body 102 is pulled out, and the holding member 106 is further detached from the pipe member main body 102 through the side openings 130, 132 (FIG. 12).

A blade member 108 is attached to the inside of the tubular window member 104 when detached from the pipe member main body 102 . As shown in FIG. 13 , at the rear end portion 176 of the rotating shaft 142 of the tubular window member 104 , a first locking portion 178 protruding radially outward is formed. In addition, the rear end portion 176 of the rotating shaft 142 formed with the first locking portion 178 is divided into two by the slit 180 and has flexibility in the radial direction. On the shaft holding portion 144 of the blade member 108, a second locking portion 182 protruding radially inward from the inner peripheral surface 144b thereof is formed. As described above, the blade member 108 holds the rotation shaft 142 by the shaft holding portion 144 so as to be rotatable about the rotation center axis C relative to the tubular window member 104 , and at the same time to be able to rotate relative to the rotation shaft 142 along the rotation center axis C. displacement. The blade member 108 can move freely from the first position shown in FIG. 6 , where its front end portion 184 abuts the shaft support portion 140 of the tubular window member 104 , to the first clamping position shown in FIG. 13 almost without resistance. The second position where the stopping portion 178 engages with the second locking portion 182 . That is, although the blade member 108 is displaced to the second position without applying any special force, the blade member 108 cannot be further displaced by the force of its own weight. The blade member 108 is in a state where its rear end portion 154 protrudes from the rear end surface 104 a of the tubular window member 104 at the second position. If the protruding rear end portion 154 of the blade member 108 at the second position is grasped and pulled further rearward, the first locking portion 178 of the rotating shaft 142 is moved radially by the second locking portion 182 of the shaft holding portion 144 . By pressing inward, the rear end portion 176 divided into two of the rotating shaft 142 flexes radially inward, and the engagement between the first locking portion 178 and the second locking portion 182 is released. That is, the snap fit is constituted by the first locking portion 178 and the second locking portion 182, and the blade member 108 can be pulled further from the second position by pulling the blade member 108 with a force greater than a certain level. Move backwards. This simple pulling displaces the blade member 108 rearward beyond the second position, so that the blade member 108 is easily detached from the tubular window member 104 as shown in FIG. 14 . By removing the blade member 108 in this way, the inner peripheral surface 104c of the tubular window member 104 can be easily cleaned. When attaching the blade member 108 to the tubular window member 104, the blade member 108 is pressed into the tubular window member 104 by inserting the rotating shaft 142 into the shaft holding portion 144, and the second locking portion 182 of the blade member 108 The first locking portion 178 of the rotating shaft 142 is bent radially inward so that the second locking portion 182 straddles the first locking portion 178 . This also facilitates attachment of the blade member 108 .

When the tubular window member 104 is attached to and detached from the tubular member main body 102, the holding member 106 is in the released position as shown in FIGS. 9 and 10 . In this release position, the blade support portion 152 of the holding member 106 is formed in a direction (left-right direction in the figure) facing the first side opening 130 and the second side opening 132 as shown in FIG. 15 . As described above, the blade member 108 is supported by the blade support portion 152 and held at the first position in the assembled state, but is free to displace to the second position unless supported by the blade support portion 152 . If the blade member 108 is displaced from the first position toward the second position during attachment or detachment of the tubular window member 104 , the rear end portion 154 of the blade member 108 may be caught on the holding member 106 . In this pipe member 100, the blade support portion 152 is along the direction toward the first side opening and the second side opening 130, 132, that is, along the direction along which the tubular window member 104 passes through the first side opening and the second side opening. The two side openings 130 and 132 extend in the direction of the moving direction of the tubular window member 104 during installation and removal, so the blade member 108 is continuously supported by the blade support portion 152 during the installation and removal process. This prevents the blade member 108 from being displaced to the second position side and being caught inside the holding member 106 .

The pipe member 200 according to the second embodiment of the present invention is mainly different from the pipe member 100 according to the first embodiment in the blade member 208 and the structure for holding the blade member 208 as shown in FIG. 16 . In the visual confirmation flow member 210 of the pipe member 200 , the tubular window member 204 is provided with a shaft holding portion 244 fixed to the peripheral wall portion 234 thereof, and the main body portion 242 of the blade member 208 constitutes a rotating shaft 242 . The inner peripheral surface 244b of the shaft holding portion 244 of the tubular window member 204 has a first locking portion 278 protruding radially inward. In addition, a second locking portion 282 protruding radially outward is provided at a front end portion 284 of the rotating shaft (body portion) 242 of the blade member 208 . In the illustrated assembled state, the stepped portion 288 of the front end portion 284 of the rotating shaft 242 abuts or approaches the rear end surface 290 of the shaft holding portion 244 , and the rear end surface 292 of the rotating shaft 242 is held by the blade supporting portion 252 of the holding member 206 support. Thereby, the position of the blade member 208 in the direction of the rotation center axis C is maintained. The rear end surface 292 of the rotating shaft 242 is formed in a conical shape, and a conical recess 294 corresponding to the conical rear end surface 292 of the rotating shaft 242 is formed on the blade support portion 252, and the rear end surface of the rotating shaft 242 is fixed by the recess 294. The radial position of 292 makes the rotation center axis C stable. In the state where the tubular window member 204 is detached from the pipe member main body 202, the blade member 208 can freely displace from the first position in FIG. The second position of part 278. At the second position, the portion of the blade member 208 protruding from the rear end surface 204a of the tubular window member 204 is grasped and pulled, thereby releasing the snap fit formed by the first locking portion 278 and the second locking portion 282, The vane member 208 is detachable from the tubular window member 204 . In this embodiment, since the tubular window member 204 has no rotation shaft, the interior of the tubular window member 204 after the blade member 208 is removed is empty, and cleaning of the inner peripheral surface 204c of the tubular window member 204 becomes easier.

The pipe member 300 according to the third embodiment of the present invention includes a C-shaped lock member 396 detachably attached to the outer peripheral surface 302 a of the pipe member main body 302 as shown in FIG. 17 . By attaching the locking member 396 to the pipe member main body 302 with the holding member 306 at the holding position, the protrusion 362 of the holding member 306 interferes with the locking member 396 so that the holding member 306 cannot be displaced rearward from the holding position. That is, since the holding member 306 cannot be displaced to the release position in the state where the lock member 396 is attached, it is possible to prevent communication of the flow path from being canceled by mistake. It should be noted that, when such a locking member 396 is used, it is not necessary to allow the holding member 306 to be able to rotate in the circumferential direction.

The pipe member 400 according to the fourth embodiment of the present invention has a configuration similar to that of the pipe member 200 according to the second embodiment, but as shown in FIGS. 18-24 , the shapes of the respective members are different.

As shown in FIGS. 19 and 20 , a flat retaining surface 404 d is formed on the outer peripheral surface 404 b of the tubular window member 404 . ) surface contact is maintained. In addition, the guide portion 474 protruding from the outer peripheral surface 404b of the peripheral wall portion 434 is formed in a plate shape extending on the outer peripheral surface 404b in the direction of the major axis L, and contacts the guide surface 472 of the pipe member main body 402 with a larger area. With such a structure, the tubular window member 404 can be attached to the tubular member main body 402 in a more stable state.

As can be seen from FIGS. 20 and 21 , the tubular window member 404 has a shaft holding portion 444 extending from the peripheral wall portion 434 to the center of the second passage 436 . This shaft holding portion 444 is different from the shaft holding portion 244 of the second embodiment shown in FIG. 16 in that it has a cantilever structure. With such a cantilever structure, cleaning of the inner peripheral surface 404c of the tubular window member 404 becomes easier, and the fluid resistance flowing through the flow path 412 becomes smaller.

As shown in FIG. 22, the tubular window member 404 has a window outer peripheral surface 405a exposed to the outside when it is installed in the tubular member main body 402, and a window inner peripheral surface located radially inside the window outer peripheral surface 405a to define the second passage 436. 405b, the vane member 408 disposed in the second passage 436 can be visually recognized through the window outer peripheral surface 405a and the window inner peripheral surface 405b. Moreover, as shown in FIG. 22, the window inner peripheral surface 405b is a part of the inner peripheral surface 404c whose cross section is circular. In the tubular window member 404 in this embodiment, the shape of the window outer peripheral surface 405a having an arc-shaped cross section is formed such that the center of curvature P1 is located between the center of curvature P2 of the window inner peripheral surface 405b and the window outer peripheral surface 405a. . Therefore, the radial thickness of the peripheral wall portion 434 is thickest at the central portion of the window outer peripheral surface 405 a and gradually becomes thinner toward the end portions. In addition, in FIG. 22, the imaginary circle V of the arc which passes through the window outer peripheral surface 405a is shown by the dotted line. When the lens is constituted by the window outer peripheral surface 405a and the window inner peripheral surface 405b, when the blade member 408 in the second passage 436 is viewed from the outside, it looks more magnified than in the above-mentioned embodiment. This improves the visibility of the blade member 408 . It should be noted that the cross-sections of the window outer peripheral surface 405a and the window inner peripheral surface 405b are not necessarily circular or arc-shaped, and can also be made into non-arc-shaped surfaces.

The blade member 408 includes: a main body portion 442 constituting a rotating shaft rotatably held by a shaft holding portion 444 of the tubular window member 404; a first blade 446a arranged on an outer peripheral surface 442a of the main body portion 442 and the second blade 446b; the first fluid resistance part 447a and the second fluid resistance part 447b disposed on the outer peripheral surface 442a between the first blade 446a and the second blade 446b. The front end portion 484 of the rotation shaft (main body portion) 442 of the blade member 408 has a stepped portion 488 facing rearward. In the assembled state of FIG. 21 , the stepped portion 488 of the rotating shaft 442 is in contact with or close to the locking portion 478 of the shaft holding portion 444, and the rear end surface 492 of the rotating shaft 442 is supported by the blade supporting portion 452 of the holding member 406. This position in the direction of the rotation center axis C is maintained. With the tubular window member 404 detached from the tubular member body 402 , the blade member 408 can be detached from the tubular window member 404 by grasping the rear end surface 492 side of the rotation shaft 442 of the blade member 408 and pulling it. Alternatively, the blade member 408 can also be detached from the tubular window member 404 by pressing the front end portion 484 of the rotating shaft 442 protruding forward from the shaft holding portion 444 of the tubular window member 404 by hand, a thin rod-shaped member, or the like. .

As shown in FIG. 24, the first fluid resistance portion 447a and the second fluid resistance portion 447b of the blade member 408 are directed in opposite directions from the outer peripheral surface 442a of the main body portion 442 along a plane F including the rotation center axis C (Fig. 24) protruding, and as shown in FIG. 23, formed in a flat plate shape extending along the one plane F in the direction of the rotation center axis C (left-right direction in FIG. 23). The first vane 446a and the second vane 446b are located on opposite sides of the one plane F, and are formed from the outer peripheral surface 442a of the main body 442 in a direction substantially perpendicular to the one plane F (left-right direction in FIG. 24 ). )protrude. The first blade 446a is formed in a flat plate shape extending linearly and obliquely with respect to the rotation center axis C when the one plane F is viewed from the vertical direction (ie, viewed from the direction of FIG. 23 ). Thus, when the first vane 446a is formed with a surface inclined to the rotation center axis C, and the fluid flows in the direction of the long axis L (that is, the direction of the rotation center axis C), the blade member 408 is turbulent due to the fluid. force in the direction of rotation. The second blade 446b also has the same shape as the first blade 446a. When the fluid flows in the flow path 412, the blade member 408 rotates around the rotation center axis C by the force in the rotation direction received from the fluid by the first blade 446a and the second blade 446b. On the other hand, the first fluid resistance part 447a and the second fluid resistance part 447b extend in the direction of the rotation center axis C as described above, and do not constitute a surface inclined with respect to the rotation center axis C. Therefore, when the blade member 408 is stationary, Therefore, the force in the rotation direction due to the fluid does not act on the first fluid resistance part 447a and the second fluid resistance part 447b. However, when the blade member 408 rotates, the first fluid resistance part 447a and the second fluid resistance part 447b receive resistance from the fluid opposite to the direction of rotation. Therefore, the first fluid resistance part 447a and the second fluid resistance part 447b play the role of canceling part of the force in the direction of rotation that the first vane 446a and the second vane 446b receive from the fluid, so that the vane member 408 as a whole The resultant force in the rotational direction received from the fluid is reduced, and the increase in the rotational speed of the blade member 408 is suppressed. It should be noted that since the fluid resistance is proportional to the power of the relative velocity between the object and the fluid, the faster the flow velocity of the flowing fluid and the faster the rotation speed of the blade member 408, the faster the first fluid resistance part 447a and the second fluid resistance part 447a. The second fluid resistance part 447b receives greater resistance from the fluid. That is, the faster the rotation speed of the blade member 408 is, the greater the rotation speed suppression effect by the first fluid resistance part 447a and the second fluid resistance part 447b is. It should be noted that the shapes of the first fluid resistance part 447a and the second fluid resistance part 447b do not necessarily have to be planar shapes, and can also be made into shapes such as cylinders or prisms extending radially outward, and can also be made in the shape of a center of rotation. A plurality of such columns are juxtaposed in the direction of the axis C. In addition, the fluid resistance part may be provided only in one side of the rotating shaft 442.

The blade member 408 is a two-color molded member formed by resin molding of a red first resin material and a yellow second resin material. A mold (not shown) for molding the blade member 408 consists of two molds divided by one plane F shown in FIG. 24 . That is, the molded blade member 408 is ejected from the mold in a direction perpendicular to the one plane F. As shown in FIG. Here, the blade member 408, especially the first blade 446a and the second blade 446b and the first fluid resistance portion 447a and the second fluid resistance portion 447b are not hooked in the ejection direction of the mold (the left-right direction in FIG. 24 ). Hanging shape, so it can be easily released from the mold. In addition, the blade member 408 is formed by injecting the first resin material from the mold corresponding to the first blade 446a, and injecting the second resin material from the mold corresponding to the second blade 446b. Therefore, the molded blade member 408 is formed such that the left side in FIG. 24 is made of a red first resin material and the right side is made of a yellow second resin material, with the one plane F as a boundary. That is, the blade member 408 is a two-color member whose half is red and the other half is yellow. By making the blade member 408 have two different colors in this way, the rotation of the blade member 408 can be visually confirmed easily by the change in color. It should be noted that, in this embodiment, two colors of red and yellow have been described, but of course other color combinations are also possible. In addition, as mentioned above, such a mold for two-color molding can be divided into a mold divided by a plane F, which can simplify mold parting, so mold manufacturing is relatively easy.

The first fluid resistance portion 447a and the second fluid resistance portion 447b of the blade member 408 are mainly provided to suppress the increase in the rotation speed of the blade member 408 as described above, but they also play the following role: when the blade member 408 is installed When the tubular window member 404 is installed in the tubular member main body 402, the posture of the blade member 408 is maintained. That is, in the state where the tubular window member 404 is detached, the rotating shaft 442 of the blade member 408 is in a cantilever state supported by the shaft holding portion 444 of the tubular window member 404, so the blade member 408 is easily inclined relative to the tubular window member 404, However, by arranging the first fluid resistance portion 447a and the second fluid resistance portion 447b between the first vane 446a and the second vane 446b, these parts engage with the inner peripheral surface 404c of the tubular window member 404, and the vane member 408 can be suppressed. the tilt. In particular, the blade member 408 in this embodiment is made of a two-color molded member as described above, and the first blade 446a and the second blade 446b become shapes that only extend left and right in FIG. 24 and do not extend upward and downward. In the case of the first fluid resistance portion 447a and the second fluid resistance portion 447b, the blade member 408 is largely inclined upward and downward. When the blade member 408 is greatly inclined, the rear end surface 492 of the rotating shaft 442 does not fit into the recess 494 ( FIG. 21 ) of the blade support 452 when the tubular window member 404 is incorporated into the pipe member body 402 . On the other hand, by converging the inclination of the blade member 408 relative to the tubular window member 404 within a predetermined range by using the first fluid resistance portion 447a and the second fluid resistance portion 447b as described above, the rotation shaft 442 of the blade member 408 The rear end surface 492 can be appropriately fitted into the conical recess 494 of the holding member 406 to be held. That is, by suppressing the inclination of the vane member 408 by the first fluid resistance portion 447a and the second fluid resistance portion 447b, the installation work of the tubular window member 404 with the vane member 408 attached can be facilitated.

In the holding member 406 of this embodiment, the surface of the protruding portion 462 facing the tubular window member 404 serves as a sliding engagement surface 462a that slides relative to the rear end surface 404a of the tubular window member 404, and the sliding engagement surface 462a A flexible portion 463 having flexibility in the direction of the major axis L is provided. Locking protrusions 466 are formed on the flexible portion 463 . The locking protrusion 466 is received in the locking recess 498 formed on the rear end surface 404a of the tubular window member 404 in the assembled state, thereby maintaining the position of the holding member 406 relative to the tubular window member 404 in the rotational direction. When the holding member 406 is located at the locking rotation position where the locking protrusion 466 is locked to the locking recess 498 as shown in FIG. 18 , rotation in the circumferential direction is suppressed by engagement of the locking protrusion 466 and the locking recess 498 . When the holding member 406 is rotated from the locking rotation position relative to the pipe member main body 402 and the tubular window member 404, the locking protrusion 466 is disengaged from the locking recess 498, and the surrounding recess formed around the rear end surface 404a of the tubular window member 404 Move within 499. The detent protrusion 466 does not contact the tubular window member 404 when located in the peripheral recess 499 . In addition, an inclined surface 462b is formed on the rear side surface of the protruding portion 462 so that when the holding member 406 is rotated from the mating rotational position to the locking rotational position, the protruding portion 462 is less likely to come into contact with the receiving recess 470 of the pipe member main body 402. corner hooks.

Regarding the pipe member 500 according to the fifth embodiment of the present invention, as shown in FIG. 25 , the holding form of the blade members 508 is different from that of the pipe member 400 according to the fourth embodiment. Specifically, the front end surface 591 and the rear end surface 592 of the rotating shaft 542 of the blade member 508 are each formed into a tapered shape, and the shaft holding portion 544 of the tubular window member 504 is formed into a cap shape, and furthermore, on the blade support portion of the holding member 506 552 is formed with a conical recess 594 . The taper angle of the front end surface 591 of the blade member 508 is sharper than the taper angle of the shaft holding portion 544 of the tubular window member 504, and the taper angle of the rear end surface 592 of the blade member 508 is also smaller than that of the conical recess 594 of the holding member 506. The cone angle is a sharp acute angle. Accordingly, the front end surface 591 and the rear end surface 592 of the blade member 508 are basically in contact with the shaft holding portion 544 and the conical recess 594 at their respective tip portions. Accordingly, the contact area between the rotating shaft 542 of the blade member 508 and the shaft holding portion 544 and the blade supporting portion 552 is reduced, thereby reducing frictional resistance during rotation.

Regarding the pipe member 600 according to the sixth embodiment of the present invention, as shown in FIGS. , 500 are different in the following aspects.

In the tubular window member 604 of the tubular member 600 , a grip portion 675 is formed between the window outer peripheral surface 605 a and the guide portion 674 . In the fourth embodiment, when the tubular window member 404 is taken out from the tubular member main body 402, the tubular window member 404 is pushed out from the rear side. However, when the tubular member 400 is attached to a narrow part, etc., fingers may not be able to reach the tubular window. The rear side of member 404. On the other hand, the tubular window member 604 in this pipe member 600 forms the above-mentioned holding portion 675, so even in the above-mentioned situation, the tubular window member 604 can be easily moved by holding the holding portion 675 and pulling the tubular window member 604. Take out from the pipe member body 602 .

As shown in FIG. 28 , the locking protrusion 666 of the holding member 606 has a triangular shape. In addition, the protrusion 662 of the holding member 606 is further extended radially outward, so that the handling of the holding member 606 becomes easier.

As shown in FIG. 29 , the first fluid resistance portion 647a and the second fluid resistance portion 647b of the blade member 608 are further elongated in the direction of the major axis L, and have a shape closer to a rectangle. Thereby, the area of the 1st fluid resistance part 647a and the 2nd fluid resistance part 647b becomes large. The area of the first vane 646a and the second vane 646b is similarly increased. Thereby, the visibility of the blade member 608 when viewed from the outside of the tubular window member 604 , especially during rotation, can be improved. In addition, the resistance received from the fluid flowing in the flow path 612 becomes larger, so the blade member 608 can be rotated even for a smaller flow rate. Further, a groove 693 is formed in the vicinity of the rear end surface 692 of the blade member 608 . When detaching the blade member 608 from the tubular window member 604, fingers are caught in the groove 693, so that the blade member 608 can be removed more easily. The structure of the shaft holding portion 644 of the tubular window member 604 for holding the rotation shaft 642 of the blade member 608 is similar to that of the shaft holding portion of the pipe member 500 according to the fifth embodiment shown in FIG. The point that the support end surface 645 of the portion 644 is a plane substantially perpendicular to the major axis L is. Thus, the tapered front end surface 691 of the blade member 608 is always in point contact with the support end surface 645 so that the frictional resistance between the front end surface 691 and the support end surface 645 does not increase when the blade member 608 rotates.

As shown in FIG. 30, the window outer peripheral surface 605a on the left side of the drawing of the tubular window member 604 is composed of an arc-shaped portion 605a-1 and a linear portion 605a-2 extending straight from this portion to the holding surface 604d. The window outer peripheral surface 605a to the holding surface 604d are formed in a shape without depressions. Accordingly, when the tubular window member 604 is attached to the tubular member main body 602 , the tubular window member 604 is smoothly inserted into the tubular member main body 602 without being caught by the pillar portion 628 of the tubular member main body 602 .

The embodiments of the present invention have been described above, but the present invention is not limited to these embodiments. For example, the tubular window member does not need to be entirely made of a transparent material, as long as the vane member in the flow path can be visually recognized when it is installed in the main body of the pipe member, only a part may be made of a transparent material, as long as the transparent material can visually recognize the vane member. Components can be colored or opaque like frosted glass. In addition, as the flow display member for displaying the flow of the fluid in the flow path, other members such as a fluid resistance body that is pushed by the fluid and displaced in the flow direction may be used instead of the vane member. In addition, when the target fluid contains visible solid matter, air bubbles, etc., the presence or absence of fluid flow can be confirmed by observing these solid matter, air bubbles, etc., so flow display members such as vane members are not necessarily required. In addition, in the above embodiment, the presence or absence of fluid flow is confirmed by the rotation of the blade member, but it may be a flow sensor that measures the flow rate of the fluid based on the rotation speed of the blade member. Furthermore, as a structure for preventing the retaining member from being erroneously displaced from the retaining position to the releasing position, a screw may be passed through the locking extension of the retaining member, and the screw may be screwed to the pipe member main body. In this case, the holding member may be fixed with a screw after the holding member is positioned at the locking rotation position, or may be fixed with a screw at the matching rotation position.

The configurations in the respective embodiments can be freely combined with each other. For example, the vanes of the vane member in the first to third embodiments may be shaped like the first vane and the second vane of the vane member in the fourth to sixth embodiments. Furthermore, in the first to third embodiments, the vane member may be a two-color molded member, and also have the first and second fluid resistance parts. Alternatively, the structure for inhibiting the rotation of the holding member in the first and second embodiments may be provided as a structure of the locking protrusion of the holding member and the locking recess of the tubular window member as in the fourth to sixth embodiments, Conversely, the configurations of the first and second embodiments may also be employed in the fourth to sixth embodiments. The other components in each embodiment can also be freely combined with each other in the same manner.

Explanation of reference signs

Pipe member 100; Pipe member main body 102; Outer peripheral surface 102a; Tubular window member 104; Rear end surface 104a; Outer peripheral surface 104b; Inner peripheral surface 104c; Holding member 106; Blade member 108; Front portion 114; inner peripheral surface 114a; rear portion 116; inner peripheral surface 116a; middle portion 118; front opening 120; rear opening 122; first passage 124; internal thread portion 126; pillar portion 128; first side opening 130; the second side opening 132; the peripheral wall 134 (of the tubular window member 104); the second passage 136; the front end 138; the shaft support 140; the rotation shaft 142; 144a; inner peripheral surface 144b; blade 146; (of holding member 106) peripheral wall portion 148; front end surface 148a; outer peripheral surface 148b; third passage 150; blade supporting portion 152; (of the holding member 106) rear end portion 156; (of the holding member 106) front end portion 158; (of the tubular window member 104) rear end portion 160; protruding portion 162; locking extension portion 164; through hole 166; ball 168; Receiving concave portion 170; guide surface 172; guide portion 174; rear end portion 176 (of rotation shaft 142); first locking portion 178; slit 180; second locking portion 182; ;

Pipe member 200; pipe member main body 202; tubular window member 204; rear end surface 204a; inner peripheral surface 204c; holding member 206; blade member 208; Shaft holding part 244; inner peripheral surface 244b; blade supporting part 252; first locking part 278; second locking part 282; front end part 284; step part 288; shaft 242) rear end face 292; conical recess 294;

pipe member 300; pipe member main body 302; outer peripheral surface 302a; holding member 306; protrusion 362; locking member 396;

pipe member 400; pipe member main body 402; tubular window member 404; rear end surface 404a; outer peripheral surface 404b; inner peripheral surface 404c; holding surface 404d; window outer peripheral surface 405a; window inner peripheral surface 405b; Flow path 412; pillar portion 428; peripheral wall portion 434; second passage 436; front end portion 438; rotating shaft (body portion) 442; outer peripheral surface 442a; shaft holding portion 444; first blade 446a; second blade 446b; The fluid resistance part 447a; the second fluid resistance part 447b; the blade support part 452; the rear end part 460; the protruding part 462; the sliding engagement surface 462a; the inclined surface 462b; the flexible part 463; ; Guide surface 472; Guide portion 474; Locking portion 478; Front end 484;

Pipe member 500; tubular window member 504; holding member 506; blade member 508; rotating shaft 542; shaft holding portion 544; blade supporting portion 552; front end surface 591; rear end surface 592; Member main body 602; tubular window member 604; holding surface 604d; window outer peripheral surface 605a; arc-shaped portion 605a-1; linear portion 605a-2; holding member 606; Shaft 642; shaft holding portion 644; supporting end surface 645; first blade 646a; second blade 646b; first fluid resistance portion 647a; second fluid resistance portion 647b; Handling part 675; Front end face 691; Rear end face 692; Groove 693;

Long axis L; rotation center axis C; curvature center P1; curvature center P2; imaginary circle V;

Claims (14)

1. a kind of pipe component, a part of fluid piping is packed between fluid piping component and constituted, wherein the pipe component Include:

Divide the pipe component main body of the first access, the pipe component main body have with the long axis relative to first access and from The side opening portion that the mode that side is connected to first access is open；

Tubulose window member is loaded into via the side opening portion in the pipe component main body, and the tubulose window member has When the tubulose window member is loaded into the pipe component main body, the second of the flow path of the pipe component is connected to and constituted with first access Access, and at least part of the tubulose window member is made of transparent material, it being capable of vision through at least part Confirm in the flow path；

Holding member, is installed on the pipe component main body, and the holding member can be in the meta position of holding position and releasing position It moves, in the holding position, the holding member engages with the tubulose window member and the tubulose window member is maintained at loading and is somebody's turn to do The position of pipe component main body, in the releasing position, the holding member leaves from the tubulose window member and releases to the tubulose The holding of window member can remove the tubulose window member from the pipe component main body via the side opening portion.

2. pipe component according to claim 1, wherein

The holding member on the direction of the long axis between the holding position and the releasing position in a manner of it can slide It is installed on the pipe component main body,

In the state that the holding member is located at the releasing position, which can be loaded into the pipe component main body Loading position and connection release and be displaced between position, the connection release position on the direction of the long axis from the loading Position displacement and the position for releasing the connection of first access and the alternate path,

The tubulose window member is configured to, and releasing in the connection can be from the pipe component main body via the side opening portion at position And the tubulose window member is removed.

3. pipe component according to claim 2, wherein

There is the pipe component main body forward portion of tubular, the rear portion of tubular and the forward portion and the rear part to divide it Between middle section, which is formed in the middle section,

The tubulose window member at the loading position, match on the direction of the long axis with the pipe component main body and with this in front of Part sealing engaging,

The holding member is formed to have the cylindrical member of third path, at the holding position and after the tubulose window member and this Side part sealing engaging, to be made of the stream of the pipe component together with first access and the alternate path the third path Road.

4. pipe component according to claim 2 or 3, wherein

In the state of removing the tubulose window member from the pipe component main body, it can be opened from the pipe component main body via the side Oral area removes the holding member.

5. the pipe component according to any one of claim 2~4, wherein

The holding member has from the periphery of the holding member towards radial outside protruding part outstanding, which has The reception recess portion of the protruding part is received,

The holding member is set as when being located at the holding position Heart rotation is being located at the protruding part at matching rotation position matched with the reception recess portion on the direction of the long axis, this is prominent Shape portion is received in the reception recess portion, and the holding member can be displaced to the releasing position, is being not at the matching rotation When position, the protruding part and the pipe component subject interference and make the holding member that can not be displaced to the releasing position.

6. pipe component according to claim 5, wherein

The protruding part has the locking epitaxy part that the outer peripheral surface along the pipe component main body extends, in the outer peripheral surface of the pipe component main body It is equipped with locking protrusion with the side in the medial surface of the locking epitaxy part towards the outer peripheral surface, in the periphery of the pipe component main body Another party in the medial surface of face and the locking epitaxy part towards the outer peripheral surface is equipped with engaging portion, and the holding member is in the guarantor Hold at position from the matching rotation position rotate and become locking rotation position when, the locking protrusion engage with the engaging portion and Inhibit the rotation of the holding member.

7. pipe component according to claim 5, wherein

The protruding part has locking protrusion on the face that is slidably fastened engaged with the tubular window member slide,

The tubulose window member has the engaging portion for receiving the locking protrusion,

When the holding member rotates from the matching rotation position at the holding position and becomes locking rotation position, the locking is prominent Play the rotation for engaging and inhibiting the holding member with the engaging portion.

8. pipe component according to claim 7, wherein

It is equipped with the flexible flexible portion on the direction of the long axis in the face that is slidably fastened of the holding member, the locking is prominent It rises and is set to the flexible portion.

9. the pipe component according to any one of claim 2~8, wherein

The guide surface that the pipe component main body has the lateral margin for being formed in the side opening portion and extends along the direction of the long axis, The tubulose window member has from the periphery of the tubulose window member towards radial outside guide portion outstanding,

By the tubulose window member from the side opening portion be inserted in first access and be located at the connection release position when, should Guide portion is abutted with the guide surface and becoming matches the tubulose window member on the direction of the long axis with the pipe component main body Position afterwards, when making the tubulose window member release position to the loading position displacement from the connection, the guide portion is in the guidance It is slided on face.

10. pipe component described according to claim 1~any one of 9, wherein

It further include FLOW VISUALIZATION component, the FLOW VISUALIZATION component configures in the alternate path of the tubulose window member, by The fluid that is flowed in the flow path and be displaced.

11. pipe component according to claim 10, wherein

The FLOW VISUALIZATION component is set as can be installed on the tubulose window member in a manner of rotate in a circumferential direction relative to the long axis Vane member, and the FLOW VISUALIZATION component can be removed together with the tubulose window member from the pipe component main body.

12. pipe component described according to claim 1~any one of 11, wherein

The tubulose window member, which has, to be exposed to external circumferential surface outside window when being packed into the pipe component main body and is located at the circumferential surface outside window Radially inner side window inner peripheral surface, can be through the interior of circumferential surface and the window inner peripheral surface and the visual confirmation alternate path outside window Portion, this outside window circumferential surface be shaped so that the center of curvature of the circumferential surface outside window be located at the center of curvature of the window inner peripheral surface with should Position between circumferential surface outside window.

13. pipe component according to claim 12, wherein

The cross section of circumferential surface and the window inner peripheral surface is respectively arc-shaped outside window for this.

14. pipe component described according to claim 1~any one of 13, wherein

The side opening portion has the first side opening portion and second formed in the diametrically opposite position of first access Side opening portion, can be via any opening portion in the first side opening portion and the second side opening portion by the tubular window structure Part is installed on the pipe component main body.