CN204312887U - A kind of adapter seal connection - Google Patents

Abstract

The utility model discloses a pipe sealing connection device which can realize the sealing connection between the pipes. The device comprises: a pipe joint nut, a first pipe joint and a second pipe joint; A threaded hole is provided at the left end of the cavity, and a through hole is provided at the right end of the cavity. Through cooperative processing, the first pipe joint and the second pipe joint form a sealing surface, and a first boss is provided on the outer wall of the second pipe joint to make it compatible with the second pipe joint. The pipe connected to the pipe joint passes through the pipe joint nut, and the second pipe joint is clamped in the cavity. The connecting pipe joint nut is tightly pressed on the second connecting pipe joint to form a sealed connection. The connecting pipe sealing connection device has the characteristics of convenient connection, reliable sealing, convenient operation, and detachability, which solves the problem that cannot be realized due to the limitation of operating space Welded takeover connection problem.

Description

A pipe sealing connection device

technical field

The utility model relates to the field of heat exchange tubes, in particular to a novel connecting tube sealing connection device.

Background technique

At present, the heat exchange tube is an important part of the existing heat exchange equipment. For some complex heat exchange equipment, the heat exchange tube is not a simple straight tube or U-shaped tube, which involves the connection problem of the heat exchange tube. Due to the arrangement of the heat exchange tube Relatively tight, it is difficult to realize the connection by welding.

Due to the existence of the above problems, the inventors researched and improved the existing pipe connection technology in order to design a mechanical connection device that can not only ensure sealing, but also realize detachment.

Utility model content

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a cavity is set in the nut 1 of the connecting pipe joint, a threaded hole is opened at the left end of the cavity, a through hole is opened at the right end of the cavity, and through cooperative processing, the first connecting pipe joint 2 The sealing end and the sealing end of the second pipe joint 3 form a sealing surface, and a first boss 31 is arranged on the outer wall of the second pipe joint 3, so that the pipe connected to the second pipe joint 3 passes through the pipe joint nut 1, and the first The two pipe joints 3 are stuck in the cavity, and at the same time, the outer wall of the first pipe joint is provided with a screw thread matched with the threaded hole, so that the first pipe joint is screwed into the pipe joint nut and tightly pressed against the second pipe joint. to form a sealed connection.

The purpose of this utility model is to provide the following aspects:

In the first aspect, the present invention provides a pipe sealing connection device, which is characterized in that the device includes: a pipe joint nut 1, a first pipe joint 2 and a second pipe joint 3, wherein,

There is a cavity 11 inside the connecting joint nut 1, a threaded hole 12 is set on the left side of the connecting joint nut 1, and a through hole 13 is opened on the right side of the connecting joint nut 1, and the threaded hole 12 and the through hole 13 are all opened to said cavity 11;

On the outer wall of the first pipe joint 2 there is a screw thread matched with the threaded hole 12,

The pipe wall of the sealing end 21 of the first pipe joint 2 has a sealing surface 22 with a predetermined shape for sealing with the second pipe joint 3;

The second pipe joint 3 has a sealing surface matched with the sealing surface 22 of the first pipe joint 2,

On the outer wall of the second pipe joint 3, there is a first boss 31 for snapping the second pipe joint 3 into the cavity 11 of the pipe joint nut 1, and the outer diameter of the first boss 31 is larger than that of the pipe joint. The diameter of the through hole 13 in the nut 1.

In the second aspect, the utility model also provides the above-mentioned device, which is characterized in that the cavity 11 is a cavity in the shape of a truncated cone, a cylinder or a regular prism.

In the third aspect, the utility model also provides the above-mentioned device, which is characterized in that the predetermined shape is a frustum-shaped sealing surface 22 formed on the pipe wall of the first pipe joint 2 from the sealing end 21 to the inside of the pipe with a gradually decreasing radius.

In the fourth aspect, the utility model also provides the above-mentioned device, which is characterized in that a second boss 23 protruding toward the sealing end 21 is provided on the side of the sealing surface 22 of the first pipe joint 2 away from the sealing end 21 .

In the fifth aspect, the present utility model also provides the above-mentioned device, which is characterized in that the second boss 23 is an annular boss.

In the sixth aspect, the utility model also provides the above-mentioned device, which is characterized in that the second boss 23 is integrally formed with the sealing surface 22 of the first pipe joint 2 .

In the seventh aspect, the utility model also provides the above-mentioned device, which is characterized in that the first boss 31 is arranged on the right side of the sealing surface of the second pipe joint 3 .

In the eighth aspect, the utility model also provides the above-mentioned device, which is characterized in that the first boss 31 is circular, and it is formed integrally with the sealing surface of the second pipe joint 3 .

In the ninth aspect, the utility model also provides the above-mentioned device, which is characterized in that the first pipe joint 2 is screwed into the pipe joint nut 1 through the threaded hole 12, reaches the cavity 11, and presses against the second pipe joint 3 sealing surface.

In the tenth aspect, the utility model also provides the above-mentioned device, which is characterized in that the pipe connected to the second pipe joint 3 passes through the threaded hole 12, the cavity 11 and the through hole 13 on the pipe joint nut 1 in sequence, so that The first boss 31 is clamped on the left side of the through hole 13 , so that the second pipe joint 3 is fixed in the cavity 11 of the pipe joint nut 1 .

According to the nozzle sealing connection device provided by the utility model, it has the following beneficial effects:

(1) The sealing connection device for the connecting pipe has a simple structure and is convenient for large-scale production;

(2) The pipe sealing connection device is easy to use, does not require complicated operations, and saves time and effort;

(3) The connecting pipe sealing connection device occupies a small space, and is suitable for pipe connection where pipes are densely arranged, such as heat exchangers;

(4) The airtightness and pressure resistance of the connecting pipe sealing connection device are strong.

Description of drawings

Fig. 1 shows a schematic cross-sectional structural schematic diagram of a front view of a nozzle sealing connection device according to a preferred embodiment of the present invention;

Fig. 2 shows a schematic cross-sectional structure schematic diagram of a front view of a nozzle sealing connection device according to a preferred embodiment of the present invention.

Explanation of reference numbers:

1 - Take over the union nut

11-cavity

12-threaded hole

13-through hole

2- the first pipe joint

21-sealed end

22- sealing surface

23-Second Boss

3-Second takeover joint

31 - the first boss

Detailed ways

The following describes the utility model in detail, and the features and advantages of the utility model will become clearer and clearer along with these descriptions.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", "left", "right" etc. is based on the orientation or positional relationship in the working state of the utility model, It is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the present invention, the term "cone angle" used refers to the acute angle between the generatrix of the conical platform and the axis of the conical platform.

In the present invention, the term "pipe joint" used refers to the sealed end of the pipe to be connected.

The utility model discloses an easy-to-install pipe sealing connection device, which includes a pipe joint nut 1, a first pipe joint 2 and a second pipe joint 3, wherein,

There is a cavity 11 inside the connecting nut 1, a threaded hole 12 is provided on the left side of the connecting nut 1, and a through hole 13 is opened on the right side of the connecting nut 1, and the threaded hole 13 and the through hole 13 are all opened to Cavity 11.

In a preferred embodiment, the cavity 11 is a regular-shaped cavity, more preferably a truncated-conical, cylindrical or regular prism-shaped cavity.

In a more preferred embodiment, the threaded hole 12 is coaxial with the through hole 13 , more preferably, the threaded hole 12 , the through hole 13 and the cavity 11 are coaxial.

In a further preferred embodiment, the threaded hole 12 , the cavity 11 , the through hole 13 and the nut 1 are coaxial.

On the outer wall of the first pipe joint 2 there is a screw thread matched with the threaded hole 12, the first pipe joint 2 is screwed into the pipe joint nut 1 through the threaded hole 12, reaches the cavity 11, and presses against it. On the second pipe joint 3; the pipe wall of the sealing end 21 of the first pipe joint 2 has a predetermined shape for sealing the sealing surface 22 with the second pipe joint 3. In a preferred embodiment, the predetermined shape is in The frustum-shaped sealing surface 22 with a gradually decreasing radius formed from the sealing end 21 to the inside of the pipe on the pipe wall of the first pipe joint 2 preferably has a frustum angle of 30° to 80°, more preferably 45° to 75°. On the one hand, the platform-shaped sealing surface 22 can increase the sealing performance between the first pipe joint 2 and the second pipe joint 3 , and on the other hand, it enables the seal of the pipe joint to withstand the relatively high pressure caused by the fluid in the pipe to the pipe wall.

In a more preferred embodiment, as shown in FIG. 1 , the frustum-shaped sealing surface 22 of the first pipe joint 2 has a second boss 23 protruding toward the sealing end 21 on the side away from the sealing end 21 , The second boss 23 is preferably an annular boss, and more preferably the second boss 23 is integrally formed with the sealing surface 22, so as to increase the sealing and pressure resistance between the pipe joints.

The second pipe joint 3 has a sealing surface that cooperates with the sealing surface 22 of the first pipe joint 2. When the first pipe joint 2 and the second pipe joint 3 are abutted through matching processing, the matching degree is 90% to 100%. %.

On the outer wall of the sealing end of the second pipe joint 3, there is a first boss 31 for snapping the second pipe joint 3 into the cavity 11 of the pipe joint nut 1, which is arranged on the sealing surface of the second pipe joint 3. On the right side, the outer diameter of the first boss 31 is larger than the diameter of the through hole 13 in the union nut 1 .

In a preferred embodiment, as shown in FIG. 1 and FIG. 2 , the first boss 31 is circular.

In a preferred embodiment, as shown in FIGS. 1 and 2 , the first boss 31 is integrally formed with the sealing surface of the second pipe joint 3 . The pipe connected with the second pipe joint 3 passes through the threaded hole 12, the cavity 11 and the through hole 13 provided by the pipe joint nut 1 in sequence, and the first boss 31 is clamped on the left side of the through hole 13, so that the first The two pipe joints 3 are fixed in the cavity 11 of the pipe joint nut 1 .

The outer diameter of the pipe connected to the first pipe joint 2 is larger than the outer diameter of the pipe connected to the second pipe joint 3 .

In a preferred embodiment, the outer diameter of the pipe connected to the second pipe joint 3 is smaller than the diameter of the through hole 11 in the pipe joint nut 1 .

In a more preferred embodiment, the inner diameter of the pipe connected to the first pipe joint 2 is equal to the inner diameter of the pipe connected to the second pipe joint 3 .

When the connecting pipe seal connection device provided by the utility model is in use, firstly, the pipe connected with the second pipe joint 3 passes through the threaded hole 12, the cavity 11 and the through hole 13 on the pipe joint nut 1 in sequence, so that the second pipe joint The joint 3 is stuck on the left side of the through hole 13, so that the sealing end of the second pipe joint 3 is stuck in the cavity 11, and then the first pipe joint 2 is screwed into the pipe joint nut 1 through the threaded hole 12, so that The sealing surface 22 of the first pipe joint 2 and the sealing surface of the second pipe joint 3 are tightly pressed together, so as to realize sealing.

The connecting pipe sealing connection device provided by the utility model has passed the water pressure test with a test pressure of 22.5 MPa and pressure holding for 10 minutes, and there is no leakage, which shows that the connecting pipe sealing connection device provided by the utility model has good sealing performance and pressure resistance performance.

According to the novel nozzle sealing connection device provided by the utility model, it has the following beneficial effects:

(1) The pipe sealing connection device provided by the utility model occupies a small space, is easy to operate, and can quickly complete the sealing connection of pipes that are inconvenient for welding operations;

(2) The connecting pipe sealing connection device provided by the utility model is connected by thread and clamping, which facilitates the installation and disassembly of the connecting pipe, making the replacement and cleaning operation simple and convenient;

(3) Through cooperative processing, the two connecting pipes have good sealing and pressure resistance performance, which can prevent the fluid in the heat exchange tube from leaking during use.

The utility model has been described in detail above in conjunction with specific implementations and illustrative examples, but these descriptions should not be construed as limiting the utility model. Those skilled in the art understand that without departing from the spirit and scope of the utility model, various equivalent replacements, modifications or improvements can be made to the technical solution of the utility model and its implementation, and these all fall within the scope of the utility model . The scope of protection of the utility model shall be determined by the appended claims.

Claims (10)

1. A pipe sealing connection device, characterized in that the device comprises: a pipe joint nut (1), a first pipe joint (2) and a second pipe joint (3), wherein, There is a cavity (11) inside the connecting nut (1), and a threaded hole (12) is provided on the left side of the connecting nut (1), and a through hole (13) is provided on the right side of the connecting nut (1). Both the threaded hole (12) and the through hole (13) are opened to the cavity (11); On the outer wall of the first pipe joint (2), there is a screw thread matched with the threaded hole (12), The pipe wall of the sealing end (21) of the first pipe joint (2) has a sealing surface (22) with a predetermined shape for sealing with the second pipe joint (3); The second pipe joint (3) has a sealing surface matched with the sealing surface (22) of the first pipe joint (2), There is a first boss (31) on the outer wall of the second pipe joint (3) for snapping the second pipe joint (3) into the cavity (11) of the pipe joint nut (1), the first The outer diameter of a boss (31) is larger than the diameter of the through hole (13) in the union joint nut (1). 2. The device according to claim 1, characterized in that, the cavity (11) is a cavity in the shape of a truncated cone, a cylinder or a regular prism. 3. The device according to claim 1, characterized in that the predetermined shape is a frustum-shaped seal with a gradually decreasing radius formed from the sealing end (21) to the inside of the pipe on the pipe wall of the first pipe joint (2) Face (22). 4. The device according to claim 1, characterized in that, a protrusion toward the sealing end (21) is provided on the side of the sealing surface (22) of the first pipe joint (2) away from the sealing end (21) The second boss (23). 5. The device according to claim 4, characterized in that, the second boss (23) is an annular boss. 6. The device according to claim 4 or 5, characterized in that, the second boss (23) is integrally formed with the sealing surface (22) of the first pipe joint (2). 7. The device according to claim 1, characterized in that, the first boss (31) is arranged on the right side of the sealing surface of the second pipe joint (3). 8 . The device according to claim 1 , characterized in that, the first boss ( 31 ) is in the shape of a ring, which is integrally formed with the sealing surface of the second pipe joint ( 3 ). 9. The device according to claim 1, characterized in that, the first pipe joint (2) is screwed into the pipe joint nut (1) through the threaded hole (12), to the cavity (11), and against Press it on the sealing surface of the second pipe joint (3). 10. The device according to claim 1, characterized in that the pipe connected to the second pipe joint (3) passes through the threaded hole (12) on the pipe joint nut (1), the cavity (11) in sequence ) and the through hole (13), the first boss (31) is clamped on the left side of the through hole (13), so that the second pipe joint (3) is fixed to the cavity (11) of the pipe joint nut (1) Inside.