CN114894022A - a pressure compensator - Google Patents

Abstract

The invention relates to the field of pressure compensators, in particular to a pressure compensator which comprises a compensator body, a supporting structure, a resetting structure, a limiting structure and a conveying pipeline, wherein the supporting structure is arranged on the compensator body; the compensator comprises a compensator body, a limiting structure, a conveying pipeline, a support structure and a reset structure, wherein the limiting structure and the conveying pipeline are arranged at two ends of the compensator body, the support structure is arranged on the outer side of the compensator body, the support structure is distributed on the compensator body at equal intervals, the reset structure is arranged on the compensator body, and the reset structure is distributed at the edge position of the compensator body in an annular array; through the cooperation that sets up bearing structure and reset structure, after the bellows deformation, the second spring that sets up receives bearing structure's restriction, can assist the bellows different parts to resume to original length, protects the bellows, has improved the life of bellows, avoids the bellows to use for a long time to take place to warp, and the first connecting flange at bellows both ends uses drum type spring to be connected with spacing disc, makes things convenient for the bellows to take place horizontal deformation.

Description

a pressure compensator

technical field

The invention relates to the field of pressure compensators, in particular to a pressure compensator.

Background technique

The pressure compensator refers to a flexible element that can effectively compensate for axial deformation. The pressure compensator installed on the fixed tube sheet heat exchanger shell has large axial flexibility and is easy to deform, and can compensate for the tube and the shell. The thermal expansion difference caused by the difference in wall temperature reduces their axial load, reduces the temperature difference stress of the pipe, tube sheet and shell, and avoids strength damage, instability damage and pipe pull-off damage. It can absorb the dimensional changes of pipelines, conduits, containers, etc. due to thermal expansion and contraction through expansion and contraction, or compensate for the axial, lateral and angular displacements of pipelines, conduits, containers, etc., and can also be used for noise reduction and vibration reduction.

However, when the existing pressure compensator is used, metal fatigue will occur after the elastic element is used for a long time or over-compensated. The lateral flexibility is small, resulting in a small amount of lateral displacement that the bellows can perform, which affects the use effect of the pressure compensator.

SUMMARY OF THE INVENTION

In view of the problems in the prior art, the present invention provides a pressure compensator.

The technical solution adopted by the present invention to solve the technical problem is: a pressure compensator, comprising a compensator body, a support structure, a reset structure, a limit structure and a conveying pipeline; the two ends of the compensator body are provided with limit structures and conveying pipeline, and a support structure is provided outside the compensator body, the support structures are distributed on the compensator body at equal intervals, and a reset structure is arranged on the compensator body, and the reset structure is distributed in a circular array on the compensator body. The compensator body includes a corrugated tube, and both ends of the corrugated tube are fixedly connected with a first connection flange, and the The outer side of a connecting flange is equipped with a limiting disc.

Specifically, the support structure includes a mounting block, a fixing ring, a connecting rod and a limit pad, the fixing ring is sleeved on the bellows, and the fixing rings are all fixedly connected with the bellows, and the fixing ring is fixedly connected by the connecting rod There are installation blocks, limit pads are provided on both sides of the installation blocks, and limit slots are provided in the middle of the limit pads.

Specifically, the reset structure includes a first limit rod, a first spring, a second spring, a fixed pressure plate and a nut, the first limit rod completely penetrates the limit discs at both ends of the bellows, and the first limit rod The limit rod is sleeved with a first spring and a second spring, the first spring is located at both ends of the first limit rod, and the second spring is sleeved at the position where the first limit rod is located between the limit discs, And the lower end of the first limit rod is provided with a fixed pressure plate, one end of the first limit rod located on the fixed pressure plate is screwed with a nut, and the upper surface of the fixed pressure plate is in contact with the lower end of the second spring; the second spring One end of the mounting block is located in the corresponding limit pad.

Specifically, the limit structure includes a third spring, a pressure block, a limit block, and a second limit rod; the limit block and the end of the first limit rod far away from the nut or the fixed pressure plate is on the side of the fixed nut The surfaces are fixedly connected, and the limit blocks are all provided with a second limit rod, a third spring is sleeved on the second limit rod, and the end of the second limit rod away from the limit block is Fixedly connected with the pressure block, the third spring and the second limit rod are symmetrically arranged with respect to the vertical plane where the symmetry axis of the pressure block is located.

Specifically, the conveying pipeline includes a pipeline body and a second connecting flange; the pipeline body is located at both ends of the corrugated pipe, and the pipeline body is fixedly connected with a second connecting flange, and the second connecting flange It is fixedly connected with the first connecting flange through a screw rod and another set of nuts.

Specifically, the compensator body includes a limit disk, a placement cavity, a limit column, a bellows, a first connection flange, a drum spring, a screw rod and a fixed ring; the limit disk and the first connection The flange is provided with a drum-shaped spring, and the two ends of the drum-shaped spring are hung on the limiting disk and the first connecting flange through the fixing ring, and the limiting disk and the first connecting flange are fixed correspondingly. The position of the ring is provided with limit posts, and the position of the limit disk corresponding to the first connection flange is provided with a placement cavity; the drum springs are distributed in the limit disk and the first connection method in an annular array. between orchid.

Beneficial effects of the present invention:

The pressure compensator of the present invention is used in conjunction with a supporting structure and a reset structure. After the bellows is deformed, the second spring provided on the supporting structure is restricted by the supporting structure, which can assist different parts of the bellows to recover to the original position. The original length of the bellows is protected, the service life of the bellows is improved, and the deformation of the bellows is avoided after long-term use. Lateral deformation.

In the pressure compensator of the present invention, the reset structure provided can replace the first spring and the second spring without dismantling the pressure compensator. The connecting flange connection can also be replaced, which increases the service life of the pressure compensator and reduces the waste of resources, and the use of the drum spring increases the lateral flexibility of the pressure compensator, which facilitates the lateral displacement of the pressure compensator , which improves the use effect of the pressure compensator.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

1 is a schematic structural diagram of a pressure compensator provided by the present invention;

FIG. 2 is a schematic view of a flip structure of the present invention;

Fig. 3 is the partial structure schematic diagram of the present invention;

Fig. 4 is the front view of the present invention;

5 is a cross-sectional view of the present invention;

Fig. 6 is the bottom view of the present invention;

Fig. 7 is the enlarged schematic diagram of point A in Fig. 5;

Fig. 8 is the enlarged schematic diagram of point B in Fig. 6;

Fig. 9 is the top view of the present invention;

FIG. 10 is an enlarged schematic view of the limiting structure in FIG. 1 of the present invention.

In the figure: 1. Compensator body; 11. Limiting disc; 11a. Placement cavity; 11b, Limiting column; 12. Bellows; 13. First connecting flange; 14. Drum spring; 15. Screw rod; 16. Fixed ring; 2. Support structure; 21. Mounting block; 22. Fixed ring; 23. Connecting rod; 24. Limit pad; 3. Reset structure; 31. First limit rod; 32, First spring ; 33, the second spring; 34, the fixed pressure plate; 35, the nut; 4, the limit structure; 41, the third spring; 42, the pressure block; 43, the limit block; 44, the second limit rod; 5, the conveying Pipe; 51. Pipe body; 52. Second connecting flange.

Detailed ways

In order to make it easy to understand the technical means, creation features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the specific embodiments.

As shown in Figures 1-10, a pressure compensator according to the present invention includes a compensator body 1, a support structure 2, a reset structure 3, a limit structure 4 and a conveying pipeline 5; Both ends are provided with a limiting structure 4 and a conveying pipe 5, and a support structure 2 is provided on the outside of the compensator body 1, and the support structures 2 are equally spaced on the compensator body 1, and the compensator body 1 is provided with The reset structure 3, the reset structure 3 is distributed in the edge position of the compensator body 1 in an annular array, and the limit structure 4 is arranged corresponding to both ends of the reset structure 3; the compensator body 1 includes a bellows 12, Both ends of the bellows 12 are fixedly connected with a first connecting flange 13, and the outer side of the first connecting flange 13 is sheathed with a limiting disk 11; The position of the spring 33 is limited, and after the bellows 12 is deformed, different positions of the bellows 12 are respectively assisted to restore to the original length, so as to improve the use effect of the bellows 12 and prolong the service life of the bellows; the reset structure 3 is used as a whole to assist the bellows. 12 recovery, while the reset structure 3 is removed, it will not affect the connection between the bellows 12 and the conveying pipeline 5, which is convenient for the staff to replace the first spring 32 and the second spring 33 that produce metal fatigue, and prolong the service life of the pressure compensator. The use of the limit structure 4 does not affect the lateral deformation of the bellows 12, improves the stability between the compensator body 1 and the conveying pipe 5, and can protect the drum spring 14 and reduce the drum spring 14 the lateral force received.

Specifically, the support structure 2 includes a mounting block 21 , a fixing ring 22 , a connecting rod 23 and a limit pad 24 , the fixing ring 22 is sleeved on the bellows 12 , and the fixing rings 22 are fixedly connected with the bellows 12 , The fixing ring 22 is fixedly connected with a mounting block 21 through a connecting rod 23 , a limiting pad 24 is provided on both sides of the mounting block 21 , and a limiting groove is provided in the middle of the limiting pad 24 ; the setting of the fixing ring 22 The firmness of the setting position of the support structure 2 on the bellows 12 is improved, which is convenient for the support structure 2 to assist the bellows 12 to restore the original length. At the same time, the fixing ring 22 can facilitate the connecting rod 23 to fix the mounting block 21, and the corresponding limit on the mounting block 21. The position of the pad 24 is provided with a placement groove, which is convenient for setting the limit pad 24. The limit pad 24 is directly and fixedly connected to the inner wall of the mounting block 21. During the installation process of the second spring 33, it can be restricted by the limit pad 24, which is convenient for the installation of the second spring 33. The first limit rod 31 in the reset structure 3 passes through the middle of the second spring 33; each fixing ring 22 is provided with four mounting blocks 21, and the mounting blocks 21 are distributed on the fixing ring 22 in an annular array, It is ensured that the second spring 33 on each reset structure 3 can be supported and restrained.

Specifically, the reset structure 3 includes a first limit rod 31 , a first spring 32 , a second spring 33 , a fixed pressure plate 34 and a nut 35 , and the first limit rod 31 completely penetrates the limit positions at both ends of the bellows 12 . The disc 11, and the first limit rod 31 is sleeved with a first spring 32 and a second spring 33, the first spring 32 is located at both ends of the first limit rod 31, and the second spring 33 is sleeved on The first limit rod 31 is located between the limit discs 11 , and the lower end of the first limit rod 31 is provided with a fixed pressure plate 34 , and one end of the first limit rod 31 located on the fixed pressure plate 34 is threadedly connected with a nut 35. The upper surface of the fixed pressure plate 34 is in contact with the lower end of the second spring 33; one end of the second spring 33 at the mounting block 21 is located in the corresponding limit pad 24; the first limit rod 31 runs through the corrugations in sequence The limit discs 11 provided at both ends of the tube 12 connect the two limit discs 11 as a whole, so that the overall structure of the pressure compensator is stable. A gap is reserved between the inner walls, and the first spring 32 and the second spring 33 will not generate a large frictional force with the first limit rod 31 when the force is deformed to prevent the first spring 32 and the second spring 33 from interacting with the first limit rod 31. The frictional force between a limit rod 31 affects the expansion and contraction of the bellows 12. When the bellows 12 returns to its original state, the first spring 32 and the second spring 33 can assist the bellows 12 to restore its original length, while the first limit rod 31 can be removed from the pressure compensator. After the first limit rod 31 is removed, the first spring 32 and the second spring 33 can be directly removed and replaced to improve the service life of the pressure compensator. The setting of the fixed pressure plate 34 ensures that the Both ends of the first limiting rod 31 can be provided with the limiting structures 4 without affecting the removal of the first limiting rod 31 .

Specifically, the limit structure 4 includes a third spring 41 , a pressure block 42 , a limit block 43 , and a second limit rod 44 ; the limit block 43 and the end of the first limit rod 31 away from the nut 35 Or the surface of the fixed pressure plate 34 on the side of the fixed nut 35 is fixedly connected, and the limit blocks 43 are provided with second limit rods 44 penetrating through them, and the second limit rods 44 can slide in the limit blocks 43 when being stressed. , will not affect the fixing of the limit block 43, the second limit rod 44 is sleeved with a third spring 41, and the end of the second limit rod 44 away from the limit block 43 is connected to the pressure block. 42 is fixedly connected, and the third spring 41 and the second limit rod 44 are symmetrically arranged about the vertical plane where the symmetry axis of the pressing block 42 is located; when the two ends of the bellows 12 are displaced laterally, the The third spring 41 is pushed and deformed by the pressing block 42, which reduces the displacement of the limit disc 11 along with the end of the bellows 12, and keeps the connection between the pressure compensator and the conveying pipeline 5 stable. At the time, its own weight will not be completely applied to the connection position of the first connection flange 13 and the second connection flange 52, the second limit rod 44 limits the deformation direction of the third spring 41, and at the same time facilitates the pressing block 42 When the pressure compensator is in normal use, the limit block 43 is always in contact with the outer surface of the corresponding pipe body 51 under the action of the elastic force of the third spring 41. When the bellows 12 is displaced, it drives the pressure block 42 to push its corresponding The deformation of the third spring 41 ensures the use effect and sensitivity of the limiting structure 4 .

Specifically, the conveying pipeline 5 includes a pipeline body 51 and a second connecting flange 52; the pipeline body 51 is located at both ends of the corrugated pipe 12, and the second connecting flange 52 is fixedly connected to the pipeline body 51. The second connecting flange 52 is fixedly connected to the first connecting flange 13 through the screw 15 and another set of nuts 35. In this embodiment, all the nuts 35 are of the same type; the diameter of the second connecting flange 52 is the same as that of the first connecting flange 52. The connecting flanges 13 are equal, and when the pipe body 51 is connected to the bellows 12, the second connecting flange 52 can block the position where the limit posts 11b are arranged on the first connecting flange 13, preventing the drum spring 14 from being moved from the first connecting flange 13 to the first connecting flange 13. The connecting flange 13 comes off.

Specifically, the compensator body 1 includes a limit disc 11, a placement cavity 11a, a limit post 11b, a bellows 12, a first connection flange 13, a drum spring 14, a screw 15 and a fixed ring 16; The limiting disc 11 and the first connecting flange 13 are provided with drum-shaped springs 14, and both ends of the drum-shaped springs 14 are hung on the limiting disc 11 and the first connecting flange 13 through a fixing ring 16. , the position of the limit disc 11 and the first connection flange 13 corresponding to the fixed ring 16 are provided with limit posts 11b, and the position of the limit disc 11 corresponding to the first connection flange 13 is provided with The placement cavity 11a; the drum springs 14 are distributed in an annular array between the limiting disc 11 and the first connecting flange 13; the placement cavity 11a is arranged to reserve a certain space for the displacement of the first connecting flange 13 At the same time, it is convenient to set the drum spring 14. The drum spring 14 connects the limiting disc 11 with the first connecting flange 13. When the bellows 12 is displaced laterally, it will not be restricted by the limiting disc 11. The lateral flexibility of the pressure compensator is increased, and the use effect of the pressure compensator is improved; the limit post 11b is semi-cylindrical, and the diameter of the limit post 11b is smaller than the diameter of the fixed ring 16, which is convenient for the fixed ring 16 to be fitted on On the limit post 11b; the cooperation between the screw 15 and the nut 35 tightly connects the first connecting flange 13 and the second connecting flange 52, and the first connecting flange 13 and the second connecting method need to be connected during the connection. Seal between blue 52.

During installation, the pressure compensator is placed as a whole between the conveying pipes 5 to be connected, so that the limiting structures 4 are distributed on the outer surface of the corresponding conveying pipe 5, and the pressing block 42 is attached to the outer surface of the pipe body 51, and then Use the screw 15 and the nut 35 to fixedly connect the first connecting flange 13 at both ends of the bellows 12 and the second connecting flange 52 in the corresponding conveying pipeline 5 to complete the installation of the pressure compensator; when the bellows in the pressure compensator When the expansion and contraction of On the support structure 2, the different positions of the bellows 12 are respectively assisted by the support structure 2 to restore to the original length; when the first spring 32 and the second spring 33 need to be replaced, the nut 35 on the first limit rod 31 is cancelled. 35 For the restriction of the fixed pressure plate 34, the first limit rod 31 is connected to the limit structure 4 fixed on the first limit rod 31 and pulled together to the end away from the fixed pressure plate 34, and the first limit rod 31 is removed. The corresponding first spring 32 and the second spring 33 can be replaced, and the pressure compensator needs to be completely removed when replacing the drum spring 14 .

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also There are various changes and improvements which fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. A pressure compensator, characterized in that: it comprises a compensator body (1), a support structure (2), a reset structure (3), a limit structure (4) and a conveying pipeline (5); the compensator body Both ends of (1) are provided with a limiting structure (4) and a conveying pipe (5), and a support structure (2) is provided on the outside of the compensator body (1), and the support structure (2) is equally spaced in the On the compensator body (1), a reset structure (3) is provided on the compensator body (1), the reset structure (3) is distributed in an annular array at the edge position of the compensator body (1), and the The limiting structure (4) is arranged corresponding to both ends of the reset structure (3); the compensator body (1) includes a bellows (12), and both ends of the bellows (12) are fixedly connected with a first connection A flange (13), the outer side of the first connecting flange (13) is sleeved with a limiting disk (11). 2 . The pressure compensator according to claim 1 , wherein the support structure ( 2 ) comprises a mounting block ( 21 ), a fixing ring ( 22 ), a connecting rod ( 23 ) and a limit pad ( 24 ). 3 . ), the fixing ring (22) is sleeved on the bellows (12), and the fixing rings (22) are all fixedly connected with the bellows (12), and the fixing ring (22) is fixedly connected with a connecting rod (23). The mounting block (21) is provided with limiting pads (24) on both sides of the mounting block (21), and limiting grooves are provided in the middle of the limiting pads (24). 3. A pressure compensator according to claim 2, characterized in that: the reset structure (3) comprises a first limit rod (31), a first spring (32), a second spring (33), The pressure plate (34) and the nut (35) are fixed, the first limit rod (31) completely penetrates the limit discs (11) at both ends of the bellows (12), and the first limit rod (31) is on the A first spring (32) and a second spring (33) are sheathed, the first spring (32) is located at both ends of the first limit rod (31), and the second spring (33) is sheathed on the first limit The rod (31) is located between the limit discs (11), and the lower end of the first limit rod (31) is provided with a fixed pressure plate (34), and the first limit rod (31) is located on the fixed pressure plate (34). One end of 34) is screwed with a nut (35), and the upper surface of the fixed pressure plate (34) is in contact with the lower end of the second spring (33); the second spring (33) is located at one end of the mounting block (21). located in the corresponding limit pads (24). 4 . The pressure compensator according to claim 3 , wherein the limiting structure ( 4 ) comprises a third spring ( 41 ), a pressing block ( 42 ), a limiting block ( 43 ), and a first Two limit rods (44); the limit block (43) is fixedly connected to the end of the first limit rod (31) away from the nut (35) or the surface of the fixed pressure plate (34) on the side of the fixed nut (35) , and a second limit rod (44) is provided through the limit block (43), and a third spring (41) is sleeved on the second limit rod (44), and the second limit rod (44) is sleeved with a third spring (41). One end of the rod (44) away from the limit block (43) is fixedly connected with the pressure block (42), and the third spring (41) and the second limit rod (44) are both about the symmetrical axis of the pressure block (42). The vertical plane is set symmetrically. 5. A pressure compensator according to claim 1, characterized in that: the conveying pipeline (5) comprises a pipeline body (51) and a second connecting flange (52); the pipeline body (51) respectively are located at both ends of the corrugated pipe (12), and the pipe body (51) is fixedly connected with a second connection flange (52), the second connection flange (52) is connected by a screw (15) and another set of nuts (35) is fixedly connected with the first connecting flange (13). 6 . The pressure compensator according to claim 1 , wherein the compensator body ( 1 ) comprises a limit disc ( 11 ), a placement cavity ( 11 a ), a limit post ( 11 b ), a corrugated a pipe (12), a first connecting flange (13), a drum spring (14), a screw (15) and a fixing ring (16); the limiting disk (11) and the first connecting flange (13) ) is provided with a drum-shaped spring (14), the two ends of the drum-shaped spring (14) are hung on the limiting disc (11) and the first connecting flange (13) through the fixing ring (16), so The limiting disc (11) and the first connecting flange (13) are provided with limiting posts (11b) at positions corresponding to the fixing ring (16), and the limiting disc (11) corresponds to the first connection A placement cavity (11a) is opened at the position of the flange (13); the drum springs (14) are distributed in an annular array between the limiting disc (11) and the first connecting flange (13).

Images