CN221300515U

CN221300515U - Expansion joint with anti-loose screw pair

Info

Publication number: CN221300515U
Application number: CN202323473567.4U
Authority: CN
Inventors: 祝增才; 黄建; 孙雅; 吴凡; 王文军; 刘步红
Original assignee: Jiangsu Borg Dongjin Pipeline Equipment Co ltd
Current assignee: Jiangsu Borg Dongjin Pipeline Equipment Co ltd
Priority date: 2023-12-20
Filing date: 2023-12-20
Publication date: 2024-07-09
Anticipated expiration: 2033-12-20

Abstract

The utility model provides an expansion joint with a locking screw pair, which relates to the technical field of expansion joints and comprises two flanges, wherein the outer surface of each flange is fixedly connected with two groups of lug plates, the outer side of one group of lug plates is provided with a locking mechanism, the locking mechanism comprises two groups of screws and eight groups of positioning bolts, the outer surface of each group of screws is in threaded connection with two groups of clamping nuts, one side surface of each group of clamping nuts, which is close to each other, is fixedly connected with two clamping lines, and the outer surfaces of each group of clamping lines are in clamping connection. This expansion joint with lockscrew pair makes the screens on two screens nut surfaces rotate relatively through the screens of screens nut and surface to make the screens carry out the joint and restrict the position of screens nut, in use, can avoid making the screens nut loose because of outside vibrations, leads to the biggest expansion value of expansion joint after adjusting to change, and leads to the expansion joint to the problem that the compensation effect of pipeline produced the influence.

Description

Expansion joint with anti-loose screw pair

Technical Field

The utility model relates to an anti-loosening expansion joint, in particular to an expansion joint with an anti-loosening screw pair, and belongs to the technical field of expansion joints.

Background

The expansion joint is also called compensator or expansion joint in habit, the expansion joint is a flexible structure which is arranged on the container shell or pipeline in order to compensate the additional stress caused by temperature difference and mechanical vibration, and utilizes the effective expansion deformation of the corrugated pipe of the working main body of the expansion joint to absorb the dimensional change of the pipeline, the conduit or the container, etc. caused by expansion and contraction, etc., or to compensate the axial, transverse and angular displacement of the pipeline, the conduit, the container, etc., and can also be used for noise reduction, vibration reduction and heat supply.

Because the expansion joint is multipurpose and connected with the pipeline for fluid transmission, the pipeline can be influenced by external factors, so that the body vibrates, in the vibration process, bolts at the joint of the expansion joint and the pipeline can be loosened, so that fluid in the pipeline flows out from the joint of the expansion joint and the pipeline, the transportation efficiency of the fluid is reduced, the external environment is possibly polluted, and meanwhile, the compensation effect of the expansion joint on the pipeline is influenced, so that the expansion joint with the anti-loose screw pair is provided.

Disclosure of utility model

(One) solving the technical problems

The utility model aims to solve the problems that in the prior art, bolts at the joint of the expansion joint and a pipeline are easy to loosen, so that fluid in the pipeline flows out from the joint of the expansion joint and the pipeline, and the compensation effect of the expansion joint on the pipeline is easy to influence.

(II) technical scheme

The utility model is realized by the following technical scheme: the utility model provides an expansion joint with locking screw pair, includes two flanges, every the equal fixedly connected with of surface of flange two sets of otic placode, one of them set of the outside of otic placode is provided with locking mechanism, locking mechanism includes two sets of screw rods and eight sets of locating bolt, every set of the equal threaded connection of surface of screw rod has two sets of clamping nuts, every set of the equal fixedly connected with two draw-in marks of a side that clamping nuts are close to each other, every set of the equal joint of surface of draw-in mark, every the equal fixedly connected with of surface of flange is four sets of grip blocks, every set of the one end that locating bolt is close to the flange all runs through the flange and extends to the inside of grip block, every set of equal threaded connection of surface of locating bolt has two octagonal nuts, every the surface of octagonal nuts all contacts with the inner wall of grip block, every the outside of octagonal nut all is provided with spacing post.

Preferably, one end of each group of screw rod far away from the clamping nut is fixedly connected with the front surfaces of the two groups of lug plates, the inner walls of the two flanges are fixedly connected with corrugated drums together, and the corrugated drums are used for compensating additional stress of the pipeline caused by temperature difference and mechanical vibration.

Preferably, one end of each group of screw rod close to the clamping nut penetrates through the lug plate and extends to the outer side of the lug plate, and a rubber ring is fixedly connected to the inner wall of each flange to seal the joint of the expansion joint and the pipeline.

Preferably, the inside sliding connection of bellows has the draft tube, the one end that the octagon nut was kept away from to the draft tube is kept away from to the bellows one end fixed connection of octagon nut, connects two pipelines, makes the fluid pass through.

Preferably, every the inside of grip block all is provided with the cardboard, every the cardboard is close to the lateral surface of spacing post all with spacing post's surface fixed connection, carry out spacingly to the internals from the one side, guarantee positioning bolt's stability.

Preferably, every the surface of flange is eight sets of fixed plates of equal fixedly connected with, every the one end that the cardboard was kept away from to the spacing post all with the inside looks joint of fixed plate, every the surface of cardboard all with the inside looks joint of fixed plate, stabilize the spacing post by the fixed plate to further fixed positioning bolt.

Preferably, every the one end that the cardboard was kept away from to spacing post all runs through fixed plate, grip block and positioning bolt in proper order and extends to the inside of fixed plate, every the cardboard is kept away from the equal fixedly connected with handle of a side of spacing post, utilizes the handle to take out spacing post, makes things convenient for the dismantlement of later stage to the expansion joint.

The utility model provides an expansion joint with a locking screw pair, which has the following beneficial effects:

1. This expansion joint with lockscrew pair makes the screens on two screens nut surfaces rotate relatively through the screens of screens nut and surface to make the screens carry out the joint and restrict the position of screens nut, and confirm the maximum value that the expansion joint can be at screw rod surface displacement by the position of screens nut, and the maximum expansion value of expansion joint, can avoid holding the nut because of outside vibrations makes the screens nut not hard up, leads to the biggest expansion value of expansion joint after adjusting to change, and leads to the problem that the expansion joint produces the influence to the compensation effect of pipeline.

2. This expansion joint with lockscrew pair passes through positioning bolt, octagonal nut and grip block, restricts the position of octagonal nut to when expansion joint and pipe connection, carry out preliminary stability to positioning bolt, and utilize spacing post to connect simultaneously inside grip block and positioning bolt, thereby spacing to positioning bolt, it is spacing to positioning bolt and hexagonal nut simultaneously by two aspects, prevent that outside vibrations from transmitting to positioning bolt, make positioning bolt take place not hard up in vibrations, guarantee expansion joint and pipe connection's stability.

Drawings

FIG. 1 is a schematic elevation view of a three-dimensional structure of the present utility model;

FIG. 2 is a schematic perspective view of a guide shell according to the present utility model;

FIG. 3 is a schematic perspective view of an octagonal nut according to the present utility model;

fig. 4 is a schematic perspective view of the inventive clip.

Description of the reference numerals

1. A flange;

2. Ear plates;

3. An anti-loosening mechanism; 301. a screw; 302. clamping the nut; 303. clamping lines; 304. positioning bolts; 305. a clamping block; 306. an octagonal nut; 307. a limit column;

4. A corrugated tube; 5. a rubber ring; 6. a guide cylinder;

7. a fixing plate; 8. a clamping plate; 9. a handle.

Detailed Description

The embodiment of the utility model provides an expansion joint with a locking screw pair.

Referring to fig. 2 and 3, the anti-loosening device comprises two flanges 1, wherein the outer surface of each flange 1 is fixedly connected with two groups of lug plates 2, an anti-loosening mechanism 3 is arranged on the outer side of one group of lug plates 2, the anti-loosening mechanism 3 comprises two groups of screw rods 301 and eight groups of positioning bolts 304, one end, close to a clamping nut 302, of each group of screw rods 301 penetrates through the lug plates 2 and extends to the outer side of the lug plate 2, a rubber ring 5 is fixedly connected to the inner wall of each flange 1, and the rubber ring 5 is arranged to ensure tightness of connection between an expansion joint and a pipeline, so that internal fluid is isolated from an external space and leakage of the internal fluid is prevented.

Referring to fig. 2 and 3, two sets of clamping nuts 302 are screwed on the outer surface of each set of screw 301, one end of each set of screw 301 far away from the clamping nuts 302 is fixedly connected with the front surfaces of two sets of lug plates 2, the inner walls of the two flanges 1 are fixedly connected with corrugated drums 4 together, and the corrugated drums 4 are arranged to compensate the pipeline by the corrugated drums 4, so that the thermal extension of the pipeline is compensated, and the stress of the pipeline wall and the acting force acting on the valve member or the support structure are reduced.

Referring to fig. 2, 3 and 4, a side surface of each set of clamping nuts 302, which is close to each other, is fixedly connected with two clamping lines 303, the outer surface of each set of clamping lines 303 is clamped, the outer surface of each flange 1 is fixedly connected with four sets of clamping blocks 305, one end of each set of positioning bolts 304, which is close to the flange 1, penetrates through the flange 1 and extends to the inside of the clamping blocks 305, the outer surface of each set of positioning bolts 304 is in threaded connection with two octagonal nuts 306, a guide cylinder 6 is slidably connected inside the corrugated cylinder 4, one end of the guide cylinder 6, which is far away from the octagonal nuts 306, is fixedly connected with one end of the corrugated cylinder 4, which is far away from the octagonal nuts 306, and the guide cylinder 6 is arranged for connecting the expansion joint with a pipeline, so that the expansion joint is in seamless contact with the pipeline, and leakage during fluid flow is avoided.

Referring to fig. 2 and 3, the outer surface of each octagonal nut 306 is in contact with the inner wall of the clamping block 305, a spacing post 307 is disposed on the outer side of each octagonal nut 306, clamping plates 8 are disposed inside each clamping block 305, a side surface of each clamping plate 8, which is close to the spacing post 307, is fixedly connected with the outer surface of the spacing post 307, and is fixed with the spacing post 307 by being provided with the clamping plates 8, so that the clamping plates 8 are conveniently operated to drive the spacing post 307 to move, the spacing post 307 is prevented from falling off, and external vibration is transmitted to the positioning bolt 304, so that the positioning bolt 304 resonates to loosen.

Referring to fig. 2 and 3, the outer surface of each flange 1 is fixedly connected with eight groups of fixing plates 7, one end of each limiting column 307, far away from the clamping plate 8, is clamped with the inner part of the fixing plate 7, the outer surface of each clamping plate 8 is clamped with the inner part of the fixing plate 7, the stability of the limiting column 307 is ensured through the fixing plate 7, two sides of the limiting column 307 are fixed, and the limiting column 307, the fixing plate 7, the clamping plate 8 and the clamping block 305 are integrated to isolate the influence caused by external vibration.

Referring to fig. 3, one end of each limiting post 307 far away from the clamping plate 8 sequentially penetrates through the fixing plate 7, the clamping block 305 and the positioning bolt 304 and extends to the inside of the fixing plate 7, one side surface of each clamping plate 8 far away from the limiting post 307 is fixedly connected with a handle 9, and the limiting post 307 is conveniently pulled away by the handle 9 through being provided with the handle 9, so that the positioning bolt 304 can be detached, and then the expansion joint or the pipeline is maintained.

The utility model is used when in use: firstly, adjusting the clamping nuts 302 close to the flange 1, adjusting the movable length of the flange 1 on the surface of the screw 301 to determine the maximum expansion value of the expansion joint, rotating the other clamping nut 302 inwards after adjustment to enable clamping lines 303 on the surface of the first clamping nut 302 to be clamped with each other, accordingly, increasing the friction force between the two clamping nuts 302 in a phase-changing manner, fixing the two clamping nuts to the surface of the screw 301 and avoiding loosening in external vibration, so that the maximum expansion value of the expansion joint changes, the problem that the pipe cannot be completely compensated or the expansion joint is torn is solved, then, a positioning bolt 304 penetrates through the flange 1 of a pipeline port to be in butt joint with the flange 1 of the expansion joint, a octagonal nut 306 is placed into the clamping block 305, the octagonal nut 306 gradually enters the deepest part of the clamping block 305 under the rotation of the positioning bolt 304 and is tightly adhered to the surface of the flange 1, the octagonal nut 306 is limited, the purpose of reinforcing the pipeline and the expansion joint is primarily achieved, in order to further stabilize the pipeline and the expansion joint, the limiting column 307 passes through the clamping block 305 and the positioning bolt 304 and is clamped with the fixing plate 7, the positioning bolt 304 is limited by the limiting column 307, the positioning bolt 304 and the clamping block 305 are fixed into a whole by the limiting column 307, the loosening of the positioning bolt 304 is avoided, the pipeline and the expansion joint are further fixed to compensate the thermal elongation of the pipeline, the stress of the pipeline wall and the acting force acting on a valve element or a support structure are reduced, the bolt still cannot be loosened under the condition of external vibration through the limiting of the positioning bolt 304 and the octagonal nut 306 respectively, so that the thermal elongation of the pipeline is compensated, the stress of the pipeline wall and the acting force acting on the valve element or the support structure are reduced, the problem that the expansion joint has an influence on the compensation effect of the pipeline due to the fact that the bolt at the joint of the expansion joint and the pipeline is loosened and fluid in the pipeline flows out from the joint of the expansion joint and the pipeline is avoided.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Expansion joint with lockscrew pair, including two flanges (1), its characterized in that: every the surface of flange (1) all fixedly connected with two sets of otic placode (2), and wherein a set of the outside of otic placode (2) is provided with locking mechanism (3), locking mechanism (3) are including two sets of screw rods (301) and eight sets of locating bolt (304), every set of the surface of screw rod (301) all threaded connection has two sets of clamping nut (302), every set of the equal fixedly connected with of a side that clamping nut (302) are close to each other two draw-in lines (303), every set of the surface homogeneous phase joint of draw-in line (303), every the surface of flange (1) all fixedly connected with four sets of grip blocks (305), every set of the one end that locating bolt (304) is close to flange (1) all runs through flange (1) and extends to the inside of grip block (305), every set of the surface of locating bolt (304) all threaded connection has two octagonal nut (306), every the surface of octagonal nut (306) all contacts with the inner wall of grip block (305), every octagonal nut (306) all is provided with spacing post (307).

2. An expansion joint with a lockscrew pair according to claim 1, wherein: one end of each group of screw rods (301) far away from the clamping nuts (302) is fixedly connected with the front faces of two groups of lug plates (2), and the inner walls of the two flanges (1) are fixedly connected with corrugated drums (4) together.

3. An expansion joint with a lockscrew pair according to claim 1, wherein: one end of each group of screw rods (301) close to the clamping nut (302) penetrates through the lug plate (2) and extends to the outer side of the lug plate (2), and the inner wall of each flange (1) is fixedly connected with a rubber ring (5).

4. An expansion joint with a lockscrew pair according to claim 2, wherein: the inside sliding connection of ripple section of thick bamboo (4) has draft tube (6), the one end that octagonal nut (306) was kept away from to draft tube (6) is kept away from to ripple section of thick bamboo (4) one end fixed connection of octagonal nut (306).

5. An expansion joint with a lockscrew pair according to claim 1, wherein: and clamping plates (8) are arranged in the clamping blocks (305), and one side surface, close to the limiting column (307), of each clamping plate (8) is fixedly connected with the outer surface of the limiting column (307).

6. An expansion joint with a lockscrew pair according to claim 5, wherein: eight groups of fixed plates (7) are fixedly connected to the outer surface of each flange (1), one end, away from the clamping plate (8), of each limiting column (307) is clamped with the inner portion of the fixed plate (7), and the outer surface of each clamping plate (8) is clamped with the inner portion of the fixed plate (7).

7. An expansion joint with a lockscrew pair as defined in claim 6, wherein: one end of each limiting column (307) far away from the clamping plate (8) sequentially penetrates through the fixing plate (7), the clamping block (305) and the positioning bolt (304) and extends to the inside of the fixing plate (7), and one side surface of each clamping plate (8) far away from the limiting column (307) is fixedly connected with a handle (9).