Device for testing long-term hydrostatic performance of composite pipe

Abstract

The utility model discloses a long-term hydrostatic performance testing device for a composite pipe, which particularly relates to the technical field of composite pipe testing and comprises a testing box used for testing the composite pipe, a sealing top cover is arranged at the upper end of the testing box, a composite pipe main body is arranged in the testing box, and sealing inner supporting blocks are arranged on the inner sides of the two ends of the composite pipe main body. A connecting guide pipe is arranged in the middle of the upper end of the sealing inner supporting block. A sealing connecting rod is arranged on the outer end face of the connecting guide pipe. In actual use, the sealing inner supporting block, the connecting guide pipe, the sealing connecting rod and the concave limiting groove are correspondingly arranged, plugging and sealing can be conveniently conducted through the sealing inner supporting block, and therefore the stability and the sealing performance of a composite pipe body in the testing process are guaranteed; and meanwhile, in the corresponding arrangement state of a semicircular pressing clamping block, a rotary connecting block, a pressing convex block and a concave limiting groove, the installation stability of the sealing inner supporting block can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipe testing, and more specifically, the utility model relates to a long-term hydrostatic performance testing device for composite pipes. Background Art

[0002] Due to its excellent mechanical properties, composite pipes are increasingly widely used in the field of oil and gas transportation. Compared with traditional steel pipes, composite pipes represented by polyethylene pipes have the advantages of corrosion resistance, light weight, and convenient transportation. Therefore, composite pipes are more and more widely used in urban gas pipe networks. After the production of composite pipes is completed, it is necessary to test the composite pipes;

[0003] For example, a long-term hydrostatic testing device for composite pipes disclosed in the prior art publication number (CN214040962U): The composite pipe is filled with water, and the pipe joints are respectively fastened at both ends of the composite pipe. The composite pipe is placed in the inner cavity of the pressure cylinder; then the inner cavity of the pressure cylinder is filled with water, and the first pressure-resistant hose and the second pressure-resistant hose are connected. Then, a certain pressure is applied to the water in the pressure cylinder by the pressure loading system and the pressure is kept constant. Under the long-term static external pressure load, the material of the composite pipe will gradually creep, resulting in the deformation of the pipe wall. After the pipe wall of the composite pipe is deformed under pressure, the water in the inner cavity of the pipe will be discharged through the second pressure-resistant hose and transported to the water storage device.

[0004] When the above device is in use, it can not only accurately measure the external pressure resistance data of the composite pipe, but also monitor the deformation condition of the pipe body in real time and obtain the change law of the pipe body deformation with time. However, when it is tested, the pressure change inside the pressure cylinder is likely to cause deformation at both ends of the main body of the composite pipe, resulting in poor sealing performance at both ends of the composite pipe and the appearance of pressure leakage, thus affecting the test effect of the composite pipe. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a long-term hydrostatic performance testing device for composite pipes. The technical problem to be solved by the utility model is: how to improve the sealing performance of the ports during the testing of composite pipes.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A long-term hydrostatic performance testing device for composite pipes, including a testing box for testing composite pipes, the upper end of which is provided with a sealed top cover. The inside of the testing box is provided with a composite pipe main body, and sealed inner support blocks are arranged on the inner sides of both ends of the composite pipe main body. A connecting conduit is arranged in the middle of the upper end of the sealed inner support block;

[0007] The outer end face of the connecting conduit is provided with a sealing connecting rod. The lower side of the outer end face of the sealing connecting rod is provided with a concave limiting groove. The outer end face of the concave limiting groove is provided with a semi-circular pressing clamp block. One side of the inner end face of the semi-circular pressing clamp block is provided with a pressing convex block. One end of the semi-circular pressing clamp block is provided with a rotating connecting block.

[0008] In a preferred embodiment, a support frame is provided on the lower end face of the test box, and a connecting rotating rod is provided at the connection between the test box and the sealing top cover;

[0009] A box door handle is provided on the upper end of the sealing top cover. An observation window is provided on one side of the outer end face of the test box. A pressure connecting pipe is provided on the upper side of the outer end face of the test box near the observation window.

[0010] In a preferred embodiment, a connecting ear plate is provided on the side of the outer end face of the semi-circular pressing clamp block away from the rotating connecting block. A U-shaped detection pipe is provided on the side of the outer end face of the test box away from the pressure connecting pipe.

[0011] In a preferred embodiment, one end of the U-shaped detection pipe passes through the end face of the test box and extends into the interior of the test box. One end of the U-shaped detection pipe is communicated with the connecting conduit inside the test box.

[0012] In a preferred embodiment, a mounting bolt is provided in the middle of the connecting ear plate. The cross-section of the sealing connecting rod in the main view direction is L-shaped. The inner end face of the sealing connecting rod in the top view direction is adapted to the outer end face of the composite pipe body. The outer end face of the sealing inner support block is adapted to the inner end face of the composite pipe body.

[0013] In a preferred embodiment, the inner end face of the pressing convex block in the top view direction is adapted to the outer end face of the composite pipe body in the top view direction. The outer end face of the sealing inner support block is a rubber material component. The inner end face of the semi-circular pressing clamp block is adapted to the concave limiting groove. A pressure gauge is provided on the outer end face of the test box.

[0014] The technical effects and advantages of the present utility model:

[0015] When the utility model is actually used, in the corresponding setting states of the sealed inner support block, the connecting conduit, the sealed connecting rod and the concave limiting groove, it is convenient to block and seal through the sealed inner support block, so as to ensure the stability and sealing performance during the test of the composite pipe body. At the same time, in the corresponding setting states of the semi-circular pressing clamp block, the rotating connecting block, the pressing convex block and the concave limiting groove, the stability of the installation of the sealed inner support block can be effectively increased, and at the same time, the sealed inner support block can be prevented from sliding inside the composite pipe body. At the same time, the sealing and plugging effect at both ends of the composite pipe body can be effectively increased, and the deformation at both ends of the composite pipe body can be avoided during the test of the sealed inner support block, so as not to affect the test effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0017] The structures, ratios, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions that the present utility model can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the efficacy that the present utility model can produce and the purpose that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0019] Figure 2 It is a schematic diagram of the overall rear structure of the present utility model.

[0020] Figure 3 It is a schematic diagram of the overall front view sectional structure of the present utility model.

[0021] Figure 4 It is a schematic diagram of the sectional connection structure of the sealed inner support block of the present utility model.

[0022] The reference numerals are: 1 test box, 2 support frame, 3 observation window, 4 pressure connection pipe, 5 sealed top cover, 6 box door handle, 7 U-shaped detection pipe, 8 connecting rotating rod, 9 composite pipe body, 10 sealed inner support block, 11 connecting conduit, 12 sealed connecting rod, 13 concave limiting groove, 14 semi-circular pressing clamp block, 15 rotating connecting block, 16 pressing convex block, 17 connecting ear plate, 18 mounting bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0024] The present utility model provides a long-term hydrostatic performance testing device for a composite pipe, as Figure 1 、 2 and shown in Figure 3, which includes a test box 1 for testing the composite pipe, with a sealed top cover 5 provided at its upper end. A composite pipe body 9 is provided inside the test box 1. A support frame 2 is provided at the lower side end face of the test box 1. A connecting rotating rod 8 is provided at the connection between the test box 1 and the sealed top cover 5. A box door handle 6 is provided at the upper end of the sealed top cover 5. An observation window 3 is provided on one side of the outer end face of the test box 1;

[0025] A pressure connecting pipe 4 is provided on the outer end face of the test box 1 near the upper side of the observation window 3. A U-shaped detection pipe 7 is provided on the other side of the outer end face of the test box 1 away from the pressure connecting pipe 4. One end of the U-shaped detection pipe 7 passes through the end face of the test box 1 and extends into the interior of the test box 1. A pressure gauge is provided on the outer end face of the test box 1.

[0026] As Figure 4 shown, sealed inner support blocks 10 are provided on the inner sides of both ends of the composite pipe body 9. A connecting conduit 11 is provided in the middle of the upper end of the sealed inner support block 10. A sealed connecting rod 12 is provided on the outer end face of the connecting conduit 11. A concave limiting groove 13 is formed on the lower side of the outer end face of the sealed connecting rod 12. A semi-circular pressing clamp block 14 is provided on the outer side end face of the concave limiting groove 13. A pressing convex block 16 is provided on one side of the inner end face of the semi-circular pressing clamp block 14;

[0027] One end of the semi-circular pressing clamp block 14 is provided with a rotating connecting block 15. A connecting ear plate 17 is provided on the other side of the outer end face of the semi-circular pressing clamp block 14 away from the rotating connecting block 15. One end of the U-shaped detection pipe 7 is communicated with the connecting conduit 11 inside the test box 1. An installation bolt 18 is provided in the middle of the connecting ear plate 17. The cross-section of the sealed connecting rod 12 is arranged in an L shape in the front view direction;

[0028] The inner end face of the sealing connecting rod 12 in the top view direction is adapted to the outer end face of the composite pipe body 9, the outer end face of the sealing inner support block 10 is adapted to the inner end face of the composite pipe body 9, the inner end face of the pressing convex block 16 in the top view direction is adapted to the outer end face of the composite pipe body 9 in the top view direction, the outer end face of the sealing inner support block 10 is a rubber material component, and the inner end face of the semi-circular pressing clamp block 14 is adapted to the concave limiting groove 13.

[0029] Working principle of the utility model:

[0030] When the utility model is in use, the staff installs the sealing inner support block 10 at one end of the composite pipe body 9, and fits the sealing connecting rod 12 to the outer end face of the composite pipe body 9. Then the staff can put the semi-circular pressing clamp block 14 into the concave limiting groove 13. Then the staff can fix the semi-circular pressing clamp block 14 stably through the mounting bolts 18 and the connecting ear plates 17. Then the inner end face of the pressing convex block 16 on the inner side of the semi-circular pressing clamp block 14 will fit with the outer end face of the composite pipe body 9. Place the composite pipe body 9 inside the test box 1. Then the staff can seal the port on the upper side of the composite pipe body 9. Then connect one end of the U-shaped detection pipe 7 to the connecting conduit 11. Then an external device can pressurize the inside of the test box 1 through the pressure connecting pipe 4, and keep the pressure inside the test box 1 at a certain value to test the composite pipe body 9. When deformation occurs in the middle of the test box 1, the liquid inside it will be introduced into the U-shaped detection pipe 7 through the connecting conduit 11, so as to facilitate the inspection of the liquid position at one end inside the U-shaped detection pipe 7, and thus judge the deformation amount.

[0031] Although the utility model has been described in detail with general descriptions and specific embodiments above, based on the utility model, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the utility model all fall within the scope of protection required by the utility model.

Claims

1. A composite pipe long-term hydrostatic performance test device, characterized in that: include: A test box (1) for testing a composite pipe, wherein a sealed top cover (5) is provided at the upper end thereof, a composite pipe body (9) is provided inside the test box (1), sealed inner support blocks (10) are provided on the inner sides of both ends of the composite pipe body (9), and a connecting conduit (11) is provided in the middle of the upper end of the sealed inner support block (10); The outer end surface of the connecting conduit (11) is provided with a sealing connecting rod (12), the lower side of the outer end surface of the sealing connecting rod (12) is provided with a concave limiting groove (13), the outer end surface of the concave limiting groove (13) is provided with a semicircular clamping block (14), one side of the inner end surface of the semicircular clamping block (14) is provided with a clamping protrusion (16), and one end of the semicircular clamping block (14) is provided with a rotating connecting block (15).

2. A composite pipe long-term hydrostatic performance testing device according to claim 1, characterized in that: A support frame (2) is provided on the lower end surface of the test box (1), and a connecting rotating rod (8) is provided at the connection between the test box (1) and the sealing top cover (5); A box door handle (6) is provided at the upper end of the sealing top cover (5), an observation window (3) is provided on one side of the outer end surface of the test box (1), and a pressure connecting pipe (4) is provided on the upper side of the outer end surface of the test box (1) near the observation window (3).

3. A composite pipe long-term hydrostatic performance testing device according to claim 2, characterized in that: The outer end surface of the semicircular clamping block (14) is provided with a connecting ear plate (17) on a side away from the rotating connecting block (15), and the outer end surface of the test box (1) is provided with a U-shaped detection tube (7) on a side away from the pressure connecting tube (4).

4. The long-term hydrostatic performance testing device for composite pipes according to claim 2, characterized in that: One end of the U-shaped detection tube (7) passes through the end surface of the test box (1) and extends to the inside of the test box (1); one end of the U-shaped detection tube (7) is connected to the connecting conduit (11) inside the test box (1).

5. The long-term hydrostatic performance testing device for composite pipes according to claim 3, characterized in that: A mounting bolt (18) is provided in the middle of the connecting ear plate (17); the cross section of the sealing connecting rod (12) in the main viewing direction is arranged in an L shape; the inner end surface of the sealing connecting rod (12) in the top viewing direction is matched with the outer end surface of the composite pipe body (9); and the outer end surface of the sealing inner support block (10) is matched with the inner end surface of the composite pipe body (9).

6. The long-term hydrostatic performance testing device for composite pipes according to claim 1, characterized in that: The inner end surface of the clamping protrusion (16) in the top view direction is matched with the outer end surface of the composite pipe body (9) in the top view direction, the outer end surface of the sealing inner support block (10) is a rubber material component, the inner end surface of the semicircular clamping clamp (14) is matched with the concave limiting groove (13), and the outer end surface of the test box (1) is provided with a pressure gauge.

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