High-temperature and high-pressure pressure pipeline compensation device

Abstract

The utility model discloses a high-temperature and high-pressure pressure pipeline compensation device, which relates to the technical field of pipeline compensation and comprises a water inlet pipe, a drain pipe arranged on the end face of the water inlet pipe, a corrugated pipe used for connecting the water inlet pipe with the drain pipe and a connecting structure arranged on the outer side wall of the corrugated pipe. The protection mechanism is arranged in the corrugated pipe; the connecting structure comprises a first connecting piece and a second connecting piece which are arranged at the two ends of the corrugated pipe respectively and used for connecting the corrugated pipe with the water inlet pipe and the water outlet pipe. The protection mechanism comprises a flow guide sleeve in threaded connection with the corrugated pipe and an extension pipe fixedly connected to the end face of the flow guide sleeve and used for guiding water flow into the drainage pipe. According to the high-temperature and high-pressure pressure pipeline compensation device, the first nuts are in threaded connection with the two ends of the guide rod in sequence, so that the guide rod is limited and prevented from being separated from the guide seat, and the corrugated pipe is prevented from being deformed in the radial direction through matching of the guide rod and the guide seat.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline compensation, in particular to a high-temperature and high-pressure pressure pipeline compensation device. Background Art

[0002] Pressure piping refers to all pipelines that are subjected to internal or external pressure, regardless of the medium inside the pipe. Pressure piping is a part of the pipeline. Pipelines are used to transport, distribute, mix, separate, discharge, meter, control and stop the flow of fluids. They are an assembly consisting of pipes, pipe fittings, flanges, bolted connections, gaskets, valves, other components or pressure-bearing parts and supports. For the use of pressure piping, it is necessary to balance or compensate its pressure according to the use environment, and corresponding pressure compensation devices are required.

[0003] The pressure pipe compensation devices currently in use usually install metal bellows. When the external temperature is too high or too low, the metal bellows will expand and contract. During the expansion and contraction process, it is unstable and easily deformed, which causes the metal bellows to be unable to be used normally, thereby reducing the service life of the pressure pipe compensation device. Summary of the invention

[0004] The main purpose of the utility model is to provide a high-temperature and high-pressure pressure pipeline compensating device. By setting up a protective mechanism, the problem that the bellows expands and contracts when the external temperature is too high or too low, is unstable during the expansion and contraction process, and is easily deformed, resulting in the metal bellows being unable to be used normally, thereby reducing the service life of the pressure pipeline compensating device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-temperature and high-pressure pressure pipeline compensation device, comprising a water inlet pipe, a drain pipe arranged on the end surface of the water inlet pipe, and a bellows for connecting the water inlet pipe and the drain pipe, and also comprising a connecting structure arranged on the outer side wall of the bellows, and a protective mechanism arranged inside the bellows;

[0007] The connection structure comprises a first connection piece and a second connection piece respectively arranged at two ends of the corrugated pipe for connecting the corrugated pipe with the water inlet pipe and the drain pipe;

[0008] The protection mechanism comprises a guide sleeve threadedly connected to the corrugated pipe, and an extension pipe fixedly connected to the end surface of the guide sleeve for guiding water flow into the interior of the drain pipe.

[0009] Preferably, the first connecting member includes a flange fixedly connected to the end face of the water inlet pipe, a flange joint fixedly connected to one end of the corrugated pipe, fixing bolts passing through the flange and the flange joint in sequence, and a fixing nut threadedly connected to the fixing bolt.

[0010] Preferably, the first connecting member further comprises a positioning column fixedly connected to the outer side wall of the flange, and a positioning groove provided on the outer side wall of the flange joint.

[0011] Preferably, the second connecting member has the same structure as the first connecting member, and the flange joint of the second connecting member is fixedly connected to the other end of the bellows.

[0012] Preferably, the protection mechanism further comprises a sealing groove formed on the end surface of the guide sleeve, and a sealing ring fixedly connected to the inside of the sealing groove, and the sealing ring and the extension tube are respectively located at two ends of the guide sleeve.

[0013] Preferably, the protection mechanism further includes a guide seat fixedly connected to the outer side wall of the flange joint, and a guide rod penetrating the guide seat.

[0014] Preferably, the protection mechanism further comprises a first nut and a second nut threadedly connected to the guide rod, and the first nut and the second nut are respectively located on both sides of the guide seat.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the utility model, the positioning column of the water inlet pipe is inserted into the positioning groove of the flange joint of the first connecting piece, so that the threaded hole of the connecting plate is quickly made to correspond to the threaded hole of the flange joint, and then the fixing bolts are passed through each threaded hole in turn, and the fixing nuts are connected to the fixing bolts, so as to connect the water inlet pipe and the corrugated pipe through the first connecting piece.

[0017] 2. In the utility model, the guide sleeve is installed by threading the guide sleeve with the bellows until the guide sleeve cannot be rotated. At this time, the guide sleeve and the inner wall of the water inlet pipe jointly squeeze the sealing ring to improve the sealing between the water inlet pipe and the bellows and prevent the medium from entering the bellows. The drain pipe is connected to the sewage pipe through the second connecting piece. At this time, the extension pipe will be located inside the drain pipe, and then the guide rod is pushed, and one end of the guide rod is obliquely passed through the guide seat, and then the guide rod is moved to a horizontal state, and the guide rod is pulled to make the other end pass through another guide seat, and then the guide rod is sequentially connected to the drain pipe. The first nut is threadedly connected to the two ends of the guide rod respectively, so as to limit the guide rod and prevent the guide rod from being separated from the guide seat. When the pipeline expands due to temperature increase or contracts due to temperature decrease, the bellows can absorb these length changes by its own expansion and contraction, thereby protecting the pipeline system from damage. The guide sleeve is set to prevent the medium from flowing inside the bellows, thereby preventing the medium from forming periodic vortexes and falling off at the folds, reducing vibration and noise generated in the pipeline, and the guide sleeve is a detachable structure, which is convenient for replacement of the guide sleeve, thereby increasing the service life of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 A side view structural schematic diagram of;

[0020] Figure 3 For this utility model Figure 1 A schematic diagram of the front view structure of

[0021] Figure 4 It is a schematic diagram of the internal structure of the utility model.

[0022] In the figure: 1, water inlet pipe; 2, drain pipe; 3, bellows; 401, flange joint; 402, fixing bolt; 403, fixing nut; 404, positioning column; 405, positioning groove; 501, guide sleeve; 502, extension pipe; 503, sealing ring; 504, guide seat; 505, guide rod; 506, first nut; 507, second nut. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] Embodiment 1: Figure 1-4 As shown, a high-temperature and high-pressure pressure pipeline compensation device includes a water inlet pipe 1, a drain pipe 2 arranged on the end surface of the water inlet pipe 1, and a bellows 3 for connecting the water inlet pipe 1 and the drain pipe 2, and also includes a connecting structure arranged on the outer side wall of the bellows 3, and a protective mechanism arranged inside the bellows 3;

[0025] The connection structure includes a first connection piece and a second connection piece respectively arranged at two ends of the corrugated pipe 3 for connecting the corrugated pipe 3 with the water inlet pipe 1 and the drain pipe 2;

[0026] The protection mechanism includes a guide sleeve 501 threadedly connected to the bellows 3 , and an extension pipe 502 fixedly connected to the end surface of the guide sleeve 501 for guiding water flow into the interior of the drain pipe 2 .

[0027] The first connecting member includes a flange fixedly connected to the end face of the water inlet pipe 1, a flange joint 401 fixedly connected to one end of the bellows 3, a fixing bolt 402 passing through the flange and the flange joint 401 in sequence, and a fixing nut 403 threadedly connected to the fixing bolt 402, wherein the fixing bolt 402 and the fixing nut 403 form an integral structure of several pieces, and the flange and the flange joint 401 are tightly fitted by the fixing bolt 402 and the fixing nut 403, thereby connecting the water inlet pipe 1 to the bellows 3.

[0028] The first connecting member also includes a positioning column 404 fixedly connected to the outer wall of the flange plate, and a positioning groove 405 opened on the outer wall of the flange joint 401, wherein the outer diameter of the positioning column 404 is equal to the inner diameter of the positioning groove 405. Through the cooperation between the positioning column 404 and the positioning groove 405, the threaded holes of the flange joint 401 can be quickly made to correspond one by one with the threaded holes of the flange plate.

[0029] The second connecting member has the same structure as the first connecting member, and the flange joint 401 of the second connecting member is fixedly connected to the other end of the corrugated pipe 3, wherein the drain pipe 2 is connected to the corrugated pipe 3 through the second connecting member.

[0030] By inserting the positioning column 404 of the water inlet pipe 1 into the positioning groove 405 of the flange joint 401 of the first connecting piece, the threaded hole of the connecting plate is quickly made to correspond to the threaded hole of the flange joint 401, and then the fixing bolt 402 is passed through each threaded hole in turn, and the fixing nut 403 is connected to the fixing bolt 402, so as to connect the water inlet pipe 1 and the corrugated pipe 3 through the first connecting piece.

[0031] Embodiment 2: Figure 1-4 As shown, a high-temperature and high-pressure pressure pipeline compensation device includes a water inlet pipe 1, a drain pipe 2 arranged on the end surface of the water inlet pipe 1, and a bellows 3 for connecting the water inlet pipe 1 and the drain pipe 2, and also includes a connecting structure arranged on the outer side wall of the bellows 3, and a protective mechanism arranged inside the bellows 3;

[0032] The connection structure includes a first connection piece and a second connection piece respectively arranged at two ends of the corrugated pipe 3 for connecting the corrugated pipe 3 with the water inlet pipe 1 and the drain pipe 2;

[0033] The protection mechanism includes a guide sleeve 501 threadedly connected to the bellows 3 , and an extension pipe 502 fixedly connected to the end surface of the guide sleeve 501 for guiding water flow into the interior of the drain pipe 2 .

[0034] The protection mechanism also includes a sealing groove opened on the end face of the guide sleeve 501 and a sealing ring 503 fixedly connected to the inside of the sealing groove. The sealing ring 503 and the extension tube 502 are respectively located at both ends of the guide sleeve 501, and the outer diameter of the extension tube 502 is equal to the inner diameter of the drain pipe 2.

[0035] The protection mechanism further includes a guide seat 504 fixedly connected to the outer wall of the flange joint 401 , and a guide rod 505 penetrating the guide seat 504 , wherein the inner diameter of the guide seat 504 is equal to the outer diameter of the guide rod 505 .

[0036] The protection mechanism further includes a first nut 506 and a second nut 507 threadedly connected to the guide rod 505 . The first nut 506 and the second nut 507 are respectively located on two sides of the guide seat 504 .

[0037] Before connecting with the water inlet pipe 1, the guide sleeve 501 is threadedly connected with the bellows 3 until the guide sleeve 501 cannot be rotated, so that the guide sleeve 501 is installed. The guide sleeve 501 can prevent the medium from flowing inside the bellows 3, thereby preventing the medium from forming periodic vortex shedding at the folds, reducing the vibration and noise generated by the pipeline, and the guide sleeve 501 is a detachable structure, which is convenient for replacing the guide sleeve 501, thereby increasing the service life of the pipeline;

[0038] When the water inlet pipe 1 is installed, the guide sleeve 501 and the inner wall of the water inlet pipe 1 jointly squeeze the sealing ring 503 to improve the sealing between the water inlet pipe 1 and the corrugated pipe 3 to prevent the medium from entering the corrugated pipe. Then repeat the first embodiment to connect the drain pipe 2 to the sewage pipe 3 through the second connecting piece. At this time, the extension pipe 502 will be located inside the drain pipe 2. Then push the guide rod 505, and pass one end of the guide rod 505 obliquely through the guide seat 504. Then move the guide rod 505 to a horizontal state, and pull the guide rod 505, and make the other end pass through another guide seat 504, and then the first nut 506 will be threadedly connected to the two ends of the guide rod 505 in turn, so as to limit the guide rod 505 and prevent the guide rod 505 from being separated from the guide seat 504. When the pipeline expands due to temperature increase or contracts due to temperature decrease, the bellows 3 can absorb these length changes by its own expansion and contraction, so as to protect the pipeline system from damage. The guide rod 505 and the guide seat 504 are set to prevent the bellows 3 from being deformed in the radial direction.

Claims

1. A high-temperature and high-pressure pressure pipeline compensation device, comprising a water inlet pipe (1), a drainage pipe (2) arranged on the end surface of the water inlet pipe (1), and a bellows (3) for connecting the water inlet pipe (1) and the drainage pipe (2), characterized in that: It also includes a connecting structure arranged on the outer side wall of the bellows (3), and a protective mechanism arranged inside the bellows (3); The connection structure comprises a first connection piece and a second connection piece, which are respectively arranged at two ends of the corrugated pipe (3) and are used to connect the corrugated pipe (3) with the water inlet pipe (1) and the drain pipe (2); The protection mechanism comprises a guide sleeve (501) threadedly connected to the bellows (3), and an extension pipe (502) fixedly connected to the end surface of the guide sleeve (501) for guiding water flow into the interior of the drain pipe (2).

2. A high-temperature and high-pressure pressure pipeline compensation device according to claim 1, characterized in that: The first connecting member comprises a flange fixedly connected to the end face of the water inlet pipe (1), a flange joint (401) fixedly connected to one end of the bellows (3), a fixing bolt (402) passing through the flange and the flange joint (401) in sequence, and a fixing nut (403) threadedly connected to the fixing bolt (402).

3. A high-temperature and high-pressure pressure pipeline compensation device according to claim 2, characterized in that: The first connecting member further comprises a positioning column (404) fixedly connected to the outer side wall of the flange, and a positioning groove (405) provided on the outer side wall of the flange joint (401).

4. A high-temperature and high-pressure pressure pipeline compensation device according to claim 3, characterized in that: The second connecting member has the same structural component as the first connecting member, and the flange joint (401) of the second connecting member is fixedly connected to the other end of the bellows (3).

5. A high-temperature and high-pressure pressure pipeline compensation device according to claim 4, characterized in that: The protection mechanism further comprises a sealing groove formed on the end surface of the guide sleeve (501), and a sealing ring (503) fixedly connected to the inside of the sealing groove. The sealing ring (503) and the extension tube (502) are respectively located at two ends of the guide sleeve (501).

6. A high-temperature and high-pressure pressure pipeline compensation device according to claim 5, characterized in that: The protection mechanism further comprises a guide seat (504) fixedly connected to the outer side wall of the flange joint (401), and a guide rod (505) penetrating the guide seat (504).

7. A high-temperature and high-pressure pressure pipeline compensation device according to claim 6, characterized in that: The protection mechanism further comprises a first nut (506) and a second nut (507) threadedly connected to the guide rod (505); the first nut (506) and the second nut (507) are respectively located on two sides of the guide seat (504).

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