A pipe freezing test bench

Abstract

The utility model relates to pipeline performance test field discloses a pipeline freezing test board, including base, the inner wall fixedly connected with detection port of base, the outer wall fixedly connected with support plate of base, the inner wall fixedly connected with straight pipe of base, the outer wall fixedly connected with clamping mechanism of detection port, the bottom fixedly connected with detection mechanism of support plate, the detection mechanism includes the barrel, the outer wall fixedly connected in the bottom of support plate of barrel, the inner wall fixedly connected with pneumatic cylinder of barrel, the drive end fixedly connected with push board of pneumatic cylinder, one side fixedly connected with the connecting pipe of barrel, in the utility model, through starting the pneumatic cylinder of barrel inner wall, makes push board along the stable sliding of inner wall, and when push board moves to pneumatic cylinder, one sealing plate closes corresponding seal pipe, and the other releases the closure, and the outside material enters the barrel through transmission pipe and seal pipe.

Description

Technical Field

[0001] This utility model relates to the field of pipeline performance testing, and in particular to a pipeline freezing test bench. Background Technology

[0002] Pipelines face numerous challenges in low-temperature environments, including functional failure due to medium freezing, material damage caused by frost heave, and the impact of low temperatures on pipeline performance. The municipal, energy, and geological industries have an urgent need for pipeline freeze-resistance testing. Existing technologies have limitations: test conditions are difficult to control, results are unstable, parameters are limited, failure mechanisms are difficult to analyze, efficiency is low, costs are high, and standardization is lacking. With advancements in materials science and automation technology, a pipeline freeze-resistance testing platform has emerged.

[0003] The pipeline freezing test bench is used to simulate the pipeline freezing process at low temperatures and evaluate its performance. The core is a closed loop of "low temperature simulation - freezing control - parameter monitoring". First, the temperature of the test chamber is stabilized at the target value (usually as low as -40℃) by means of mechanical refrigeration, direct cooling with liquid nitrogen, etc., combined with a PID module. Then, the medium is injected into the pipeline, and the low temperature causes the medium to freeze from the inner wall to the center. The freezing rate and range are adjusted by temperature control. At the same time, sensors monitor the temperature, stress and strain, and sealing performance of the medium inside and outside the pipeline. Finally, the safety and reliability of the pipeline under freezing conditions are evaluated based on the data, providing a basis for optimization.

[0004] While current pipeline freezing test benches provide the industry with a crucial means of verifying low-temperature performance and have significantly promoted the development of pipeline antifreeze design and safety assessment, limitations in variable control restrict testing efficiency. In actual testing, factors such as freezing rate and medium composition often interfere with each other, making it difficult to analyze the influence of a single variable. For example, adjusting the ambient temperature may simultaneously change the freezing range and the medium expansion rate, resulting in complex data correlations. Multiple repeated tests are required to isolate the influence of variables, which not only prolongs the testing cycle but also increases costs, thus limiting its application in efficient R&D and batch quality inspection to some extent. Therefore, a pipeline freezing test bench is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a pipeline freezing test bench, which aims to improve the problem that it is difficult to analyze the influence of a single variable in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pipe freezing test bench includes a base, an inspection port fixedly connected to the inner wall of the base, a support plate fixedly connected to the outer wall of the base, a straight pipe fixedly connected to the inner wall of the base, a clamping mechanism fixedly connected to the outer wall of the inspection port, and an inspection mechanism fixedly connected to the bottom of the support plate.

[0008] The testing mechanism includes a barrel, the outer wall of which is fixedly connected to the bottom of the support plate, a cylinder fixedly connected to the inner wall of the barrel, a push plate fixedly connected to the driving end of the cylinder, a connecting pipe fixedly connected to one side of the barrel, a transition pipe fixedly connected to the other side of the connecting pipe, sealing pipes fixedly connected to both sides of the transition pipe, a transmission pipe fixedly connected to the other side of the sealing pipe, a sealing plate slidably connected to the inner wall of the sealing pipe, and limit components slidably connected to the inner walls of both transmission pipes.

[0009] As a further description of the above technical solution:

[0010] The clamping mechanism includes a disc, the inner wall of which is threaded with a plurality of studs, a rotating plate is fixedly connected to one side of each stud, a clamping block is rotatably connected to the other side of each stud, and a sealing ring is fixedly connected to the inner wall of the disc.

[0011] As a further description of the above technical solution:

[0012] The limiting component includes a limiting plate, and a connecting rod is fixedly connected to one side of each of the two limiting components that are close to each other;

[0013] As a further description of the above technical solution:

[0014] The bottom of the detection port is fixedly connected to the top of the straight tube, and the outer wall of one of the transmission tubes is fixedly connected to the inner wall of the straight tube.

[0015] As a further description of the above technical solution:

[0016] The bottom of the clamping block is slidably connected to the top of the sealing ring, and the outer wall of the push plate is slidably connected to the inner wall of the barrel.

[0017] As a further description of the above technical solution:

[0018] One side of the connecting rod is fixedly connected to one side of the sealing plate, and the cross-sectional shape of the limiting plate is cross-shaped;

[0019] As a further description of the above technical solution:

[0020] The sealing tube has a trapezoidal cross-sectional shape, and the rotating plate has a hexagonal cross-sectional shape.

[0021] As a further description of the above technical solution:

[0022] The outer wall of the limiting plate is slidably connected to the inner wall of the transmission tube, and the inner wall of the disk is fixedly connected to the outer wall of the detection port.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, by activating the cylinder on the inner wall of the barrel, the push plate slides stably along the inner wall. When the push plate moves toward the cylinder, one sealing plate closes the corresponding sealing tube, and the other is unsealed. External materials enter the barrel through the transmission pipe and the sealing tube. When the push plate moves away from the cylinder, the sealing state is reversed. The originally closed sealing tube opens, and the other one closes. The connecting rod cooperates with the limiting plate to ensure that the sealing plate moves stably and firmly, so that the material in the barrel is sent into the tested pipeline through the straight pipe and the detection port. This quantitative control avoids variable interference and greatly improves the overall testing efficiency.

[0025] 2. In this utility model, rotating the rotating plate causes the stud to rotate on the inner wall of the disc, thereby adjusting the position of the stud within the disc. This adjustment changes the size of the space formed by multiple clamping blocks, allowing the test bench to adapt to various specifications of pipes for testing. At the same time, the sealing ring effectively enhances the sealing performance during the testing process, avoiding test errors or interruptions caused by sealing problems, ensuring the stability of the testing environment, and thus significantly improving the overall operating efficiency of the test bench. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a pipe freezing test bench proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the push plate structure of a pipeline freezing test bench proposed in this utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the sealing ring structure of a pipeline freezing test bench proposed in this utility model.

[0030] Legend:

[0031] 1. Base; 2. Support plate; 3. Detection port; 4. Clamping mechanism; 41. Disc; 42. Stud; 43. Clamping block; 44. Rotating plate; 45. Sealing ring; 5. Detection mechanism; 51. Barrel body; 52. Cylinder; 53. Push plate; 54. Transition pipe; 55. Sealing pipe; 56. Transmission pipe; 57. Sealing plate; 58. Limiting assembly; 581. Connecting rod; 582. Limiting plate; 59. Connecting pipe; 6. Straight pipe. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 3 This utility model provides an embodiment of a pipe freezing test bench, including a base 1, which is the basic support component of the entire test bench, ensuring stable connection of all components and smooth testing. A detection port 3 is fixedly connected to the inner wall of the base 1. The detection port 3 is the channel for the test material to enter the pipe under test, and at the same time, it facilitates the connection of pipes of different specifications, providing a stable material transmission path for testing. A support plate 2 is fixedly connected to the outer wall of the base 1, and a straight pipe 6 is fixedly connected to the inner wall of the base 1. The straight pipe 6 connects to the detection port 3, and a clamping mechanism 4 is fixedly connected to the outer wall of the detection port 3. The clamping mechanism 4 can fix the pipes under test of different specifications, prevent the pipes from loosening or falling off during the test, and ensure the accuracy and safety of the test. A detection mechanism 5 is fixedly connected to the bottom of the support plate 2. The detection mechanism 5 can quantitatively deliver material to the pipe under test, realize the freezing test of the pipe, and improve the testing efficiency and accuracy.

[0034] The testing mechanism 5 includes a barrel 51. The outer wall of the barrel 51 is fixedly connected to the bottom of the support plate 2. The barrel 51 is used to temporarily store the test material. The material is drawn in and discharged through internal pressure changes. It is a key component for quantitative material transfer. A cylinder 52 is fixedly connected to the inner wall of the barrel 51. A push plate 53 is fixedly connected to the driving end of the cylinder 52. The push plate 53 slides inside the barrel 51 under the drive of the cylinder 52, changing the size of the internal space of the barrel 51, thereby changing the pressure and providing power for the material to be drawn in and discharged. A connecting pipe 59 is fixedly connected to one side of the barrel 51. A transition pipe 54 is fixedly connected to the other side of the connecting pipe 59. Sealing pipes 55 are fixedly connected to both sides of the transition pipe 54. The transition pipe 54 connects the connecting pipe 59 and the sealing pipe 55, so that the material can flow between the connecting pipe 59 and the sealing pipe 55, realizing the transfer of material.

[0035] A transmission pipe 56 is fixedly connected to the other side of the sealing pipe 55. The transmission pipe 56 is connected to the external material source and the straight pipe 6 respectively. It is responsible for introducing external materials into the barrel 51 or transporting materials in the barrel 51 to the straight pipe 6. It is an important channel for material transmission. A sealing plate 57 is slidably connected to the inner wall of the sealing pipe 55. The sealing plate 57 slides inside the sealing pipe 55 and can open or close the sealing pipe 55 to control the flow of materials and realize the switching of material intake and discharge. Limiting components 58 are slidably connected to the inner walls of the two transmission pipes 56. The limiting components 58 restrict the movement direction of the sealing plate 57 to ensure that the sealing plate 57 slides smoothly and accurately realizes the opening and closing of the sealing pipe 55, ensuring stable material transmission.

[0036] Reference Figure 1 , Figure 2 and Figure 4 The clamping mechanism 4 includes a disc 41, with multiple studs 42 threadedly connected to the inner wall of the disc 41. The disc 41 provides an installation base for the studs 42. A rotating plate 44 is fixedly connected to one side of the studs 42, which facilitates the operator to rotate the studs 42, saving effort and making it convenient. A clamping block 43 is rotatably connected to the other side of the studs 42. The clamping block 43 moves under the drive of the studs 42. The test pipe is fixed by the cooperation of multiple clamping blocks 43, which can adapt to pipes of different specifications. A sealing ring 45 is fixedly connected to the inner wall of the disc 41. The sealing ring 45 enhances the sealing between the test port 3 and the test pipe, prevents material leakage during the test, and ensures the accuracy of the test.

[0037] The limiting assembly 58 includes a limiting plate 582. Connecting rods 581 are fixedly connected to the adjacent sides of both limiting assemblies 58. The connecting rods 581 connect the sealing plate 57 and the limiting plate 582, driving the two sealing plates 57 to move synchronously, ensuring coordinated opening and closing of the sealing tube 55. The bottom of the detection port 3 is fixedly connected to the top of the straight tube 6. The detection port 3 and the straight tube 6 are tightly connected, ensuring that the material can smoothly enter the detection port 3 from the straight tube 6 and then enter the pipe being tested. The outer wall of one of the transmission pipes 56 is fixedly connected to the inner wall of the straight tube 6. The transmission pipe 56 is fixedly connected to the straight tube 6, ensuring that the material can stably enter the straight tube 6 from the transmission pipe 56, realizing the material... Smooth transmission: The bottom of the clamping block 43 is slidably connected to the top of the sealing ring 45. The sealing ring 45 provides sliding support for the clamping block 43 and enhances the sealing between the clamping block 43 and the pipeline to prevent material leakage. The outer wall of the push plate 53 is slidably connected to the inner wall of the barrel 51. The barrel 51 provides sliding guidance for the push plate 53 to ensure that the push plate 53 can move smoothly and effectively change the internal pressure of the barrel 51 to realize the suction and discharge of materials. One side of the connecting rod 581 is fixedly connected to one side of the sealing plate 57. The connecting rod 581 drives the sealing plate 57 to move synchronously, so that the two sealing plates 57 move in coordination and accurately control the opening and closing of the sealing tube 55.

[0038] The limiting plate 582 has a cross-shaped cross section. The cross-shaped limiting plate 582 can slide stably within the transmission pipe 56, effectively limiting the movement direction of the sealing plate 57 and ensuring smooth movement of the sealing plate 57. The sealing pipe 55 has a trapezoidal cross section. The trapezoidal structure allows the sealing plate 57 to gradually seal or open the sealing pipe 55 when sliding, achieving smooth material switching and preventing leakage. The rotating plate 44 has a hexagonal cross section. The hexagonal structure makes it easy for operators to hold and rotate, and it is not easy to slip, making the rotation operation of the stud 42 more convenient. The outer wall of the limiting plate 582 is slidably connected to the inner wall of the transmission pipe 56. The transmission pipe 56 provides sliding guidance for the limiting plate 582, ensuring that the limiting plate 582 can stably drive the sealing plate 57 to move and ensuring accurate opening and closing of the sealing pipe 55. The inner wall of the disc 41 is fixedly connected to the outer wall of the detection port 3. The disc 41 is fixedly connected to the detection port 3, ensuring that the clamping mechanism 4 can stably clamp and fix the pipe connected to the detection port 3.

[0039] Working principle: Activating the cylinder 52 located on the inner wall of the barrel 51 causes the push plate 53 to slide stably on the inner wall of the barrel 51 by the driving force of the cylinder 52. When the push plate 53 is driven by the driving force of the cylinder 52 to move towards the cylinder 52, one sealing plate 57 seals one sealing tube 55, and another sealing plate 57 releases the seal of another sealing tube 55, thus allowing external materials to enter the interior of the barrel 51 through a transmission pipe 56 and a sealing tube 55. When the push plate 53 moves away from the cylinder 52, one sealing plate 57 releases the seal of one sealing tube 55, and another sealing plate 57 seals another sealing tube 55. Thanks to the cooperation of the connecting rod 581 and the limiting plate 582, the movement of the sealing plate 57 can remain stable and firm, thus allowing the materials inside the barrel 51 to enter the interior of the tested pipe through the straight pipe 6 and the detection port 3. Quantitative testing greatly improves the overall testing efficiency.

[0040] Rotating the rotating plate 44 causes the stud 42 to rotate on the inner wall of the disc 41, thereby allowing the stud 42 to adjust its position on the inner wall of the disc 41. This, in turn, allows the size of the space formed by the multiple clamping blocks 43 to be adjusted, enabling the entire test bench to test pipes of various specifications. Thanks to the presence of the sealing ring 45, the sealing performance of the entire test bench is greatly improved during the testing process, which in turn greatly improves the operating efficiency of the entire test bench.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe freezing test bench, comprising a base (1), characterized in that: The inner wall of the base (1) is fixedly connected to a detection port (3), the outer wall of the base (1) is fixedly connected to a support plate (2), the inner wall of the base (1) is fixedly connected to a straight tube (6), the outer wall of the detection port (3) is fixedly connected to a clamping mechanism (4), and the bottom of the support plate (2) is fixedly connected to a detection mechanism (5). The testing mechanism (5) includes a barrel (51), the outer wall of which is fixedly connected to the bottom of the support plate (2), a cylinder (52) is fixedly connected to the inner wall of the barrel (51), a push plate (53) is fixedly connected to the driving end of the cylinder (52), a connecting pipe (59) is fixedly connected to one side of the barrel (51), a transition pipe (54) is fixedly connected to the other side of the connecting pipe (59), a sealing pipe (55) is fixedly connected to both sides of the transition pipe (54), a transmission pipe (56) is fixedly connected to the other side of the sealing pipe (55), a sealing plate (57) is slidably connected to the inner wall of the sealing pipe (55), and a limit assembly (58) is slidably connected to the inner walls of the two transmission pipes (56).

2. The pipeline freezing test bench according to claim 1, characterized in that: The clamping mechanism (4) includes a disc (41), the inner wall of the disc (41) is threaded with a plurality of studs (42), a rotating plate (44) is fixedly connected to one side of the studs (42), a clamping block (43) is rotatably connected to the other side of the studs (42), and a sealing ring (45) is fixedly connected to the inner wall of the disc (41).

3. The pipeline freezing test bench according to claim 2, characterized in that: The limiting component (58) includes a limiting plate (582), and a connecting rod (581) is fixedly connected to the side of the two limiting components (58) that are close to each other.

4. The pipeline freezing test bench according to claim 1, characterized in that: The bottom of the detection port (3) is fixedly connected to the top of the straight tube (6), and the outer wall of one of the transmission tubes (56) is fixedly connected to the inner wall of the straight tube (6).

5. A pipeline freezing test bench according to claim 2, characterized in that: The bottom of the clamping block (43) is slidably connected to the top of the sealing ring (45), and the outer wall of the push plate (53) is slidably connected to the inner wall of the barrel (51).

6. A pipeline freezing test bench according to claim 3, characterized in that: One side of the connecting rod (581) is fixedly connected to one side of the sealing plate (57), and the cross-sectional shape of the limiting plate (582) is cross-shaped.

7. A pipeline freezing test bench according to claim 2, characterized in that: The sealing tube (55) has a trapezoidal cross-sectional shape, and the rotating plate (44) has a hexagonal cross-sectional shape.

8. A pipeline freezing test bench according to claim 3, characterized in that: The outer wall of the limiting plate (582) is slidably connected to the inner wall of the transmission tube (56), and the inner wall of the disc (41) is fixedly connected to the outer wall of the detection port (3).

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