Device for checking sealing performance of cold and hot water crosslinked polyethylene pipe

Abstract

The utility model relates to the technical field of pipeline detection, in particular to a cold and hot water crosslinked polyethylene pipe sealing performance detection device which comprises a base, a detection mechanism is arranged on the base, the detection mechanism comprises a side plate, the side plate is fixedly connected to one side of the base, an installation hole is formed in the side plate, an installation plate is installed in the installation hole, and the installation plate is fixedly connected with the base. Cold water enters the polyethylene pipe along the water passing pipe to fill the polyethylene pipe, when tiny holes exist in the polyethylene pipe and water leaks out of the holes, the filter paper can absorb the water and become wet, and therefore the actual water leakage area is indicated according to the wet face, the hole positions of the polyethylene pipe can be visually judged, follow-up repairing is facilitated, and the service life of the polyethylene pipe is prolonged. Hot water is injected from the water injection pipe on the water passing pipe where the first valve is located, the sealing performance change possibly generated when the pipeline encounters a high-temperature environment in actual use is simulated, and cold water detection is matched, so that the detection comprehensiveness is further improved, and the detection quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection, in particular to a sealing inspection device for cold and hot water cross-linked polyethylene pipes. Background Art

[0002] Pipelines are widely used, mainly in various industrial installations. Pipelines are devices connected by pipes, pipe connectors, and valves to transport gas, liquid, or fluids containing solid particles. During use, the pipeline needs to ensure its sealing, so sealing testing is required.

[0003] According to Chinese patent publication number CN209166734U, the patent provides a pipeline sealing inspection device, including a base, a bearing is installed on the base, a rotating shaft is installed inside the bearing, a turntable is welded to the end of the rotating shaft, a first hydraulic cylinder is installed on the top of the turntable, a steel plate is installed at the end of the first hydraulic cylinder, a second hydraulic cylinder is installed on the lower side of the steel plate, and the ends of two groups of the second hydraulic cylinders are fixedly connected with a clamping plate. By installing a detection water pool and a first hydraulic cylinder on the base, water is put into the detection water pool, and the second hydraulic cylinder is driven to rise and fall by the first hydraulic cylinder. The two groups of second hydraulic cylinders drive the clamping plate to hold the pipeline, and then put it into the detection water pool. Air is ventilated in the pipeline through the air inlet pipe, and whether bubbles are generated in the detection water pool is observed to detect the sealing of the pipeline. The structure is simple, the operation is convenient, and the sealing of the pipeline can be comprehensively inspected.

[0004] The aforementioned patent still relies on visual observation to detect bubble formation, resulting in inaccurate test results. Furthermore, if a tiny hole in the pipe is submerged in water, it is difficult to determine its exact location based on the bubbles, making subsequent pipe repair difficult. Therefore, we propose a device for inspecting the tightness of hot and cold water cross-linked polyethylene pipes. Utility Model Content

[0005] The purpose of the utility model is to provide a device for inspecting the tightness of cold and hot water cross-linked polyethylene pipes, which solves the problem that observing the generation of bubbles does not lead to accurate detection results and it is difficult to determine the specific location of the hole.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A device for checking the sealing performance of cross-linked polyethylene pipes for hot and cold water comprises a base, wherein the base is provided with a detection mechanism, wherein the detection mechanism comprises a side plate, wherein the side plate is fixedly connected to one side of the base, a mounting hole is provided on the side plate, and a mounting plate is installed in the mounting hole, a pipe hole is provided on the mounting plate, four sliding rods are fixedly connected to the side wall of the side plate, a clamping block is slidably sleeved on the four sliding rods, a water hole is provided on the clamping block, and a water pipe is slidably connected to the inner wall of the water hole, and the end of the water pipe away from the clamping block is fixedly connected to the inner wall of the pipe hole, a water injection pipe is connected and installed on the water pipe, and the water injection pipe is vertically arranged between the water flow pipe.

[0008] Preferably, there are two detection mechanisms, the other detection mechanism is installed on the other side of the base, and the two detection mechanisms are arranged symmetrically with each other.

[0009] Preferably, a pipe is clamped between the two clamping blocks in the two detection mechanisms, and the pipe is wrapped with filter paper.

[0010] Preferably, the adjusting mechanism includes a slide groove, the slide groove is installed on the top of the base, the inner wall of the slide groove is rotatably connected to a bidirectional screw, the side wall of one of the side plates is rotatably connected to a rotating rod, the rotating end of the rotating rod movably passes through the connected side plate and the slide groove and is fixedly connected to one end of the bidirectional screw, and a handwheel is installed on the other end of the rotating rod, and sliders are threadedly sleeved on the bidirectional threads of the bidirectional screw, and the two sliders are respectively fixedly connected to the two clamping blocks, and the two sliders are both slidably connected to the inner wall of the slide groove.

[0011] Preferably, valve one is installed on the water pipe in one of the detection mechanisms, and valve two is installed on the water pipe in the other detection mechanism.

[0012] Preferably, the control mechanism includes a main control rod, one end of which is equipped with a handwheel 2, a control rod 1 is fixedly connected to the valve stem of the valve 1, the control rod 1 and the main control rod are both provided with a pulley 1, and a transmission belt 1 is connected between the two pulleys 1, a control rod 2 is fixedly connected to the valve stem of the valve 2, the control rod 2 and the main control rod are both provided with a pulley 2, and a transmission belt 2 is connected between the two pulleys 2.

[0013] Preferably, the front side of the base is fixedly connected to a bottom plate, the top of the bottom plate is fixedly connected to a support plate, and the main control rod movably passes through the support plate and is rotatably connected to the support plate.

[0014] By means of the above technical solution, the present invention provides a device for checking the sealing performance of hot and cold water cross-linked polyethylene pipes. It has at least the following beneficial effects:

[0015] (1) The utility model allows cold water to enter the polyethylene tube along the water pipe and fill it. When there are tiny holes in the polyethylene tube, water will leak out of the hole. The filter paper will absorb the water and become moist, thereby indicating the actual leaking area based on the moist surface. The location of the hole in the polyethylene tube can be intuitively judged, which is convenient for subsequent repairs. Hot water is poured from the water injection pipe on the water pipe where the valve is located to simulate the possible changes in the sealing of the pipeline in the high temperature environment during actual use. In combination with the cold water test, the comprehensiveness of the test is further improved to improve the quality of the test.

[0016] (2) The utility model can adapt to the clamping of polyethylene pipes of different sizes by rotating the hand wheel to cause the bidirectional screw to drive the sliders closer to each other, thereby improving the flexibility of loading. The clamping block slides along the sliding rod to improve the stability of the clamping block. The two ends of the polyethylene pipe are aligned with the water holes of the two clamping blocks to facilitate the flow of water during hot and cold water testing, and can provide stable loading and stable testing conditions for pipes of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

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

[0019] Figure 2 This is a connection diagram of the detection mechanism and the adjustment mechanism in the present utility model;

[0020] Figure 3 This is a connection diagram of the water pipe and the control mechanism of the utility model;

[0021] Figure 4 It is a structural diagram of the control mechanism in the utility model.

[0022] In the figure: 1. Base; 2. Detection mechanism; 21. Side panel; 22. Mounting plate; 23. Slide rod; 24. Clamp; 25. Water hole; 26. Water pipe; 27. Water injection pipe; 3. Pipe; 4. Filter paper; 5. Adjustment mechanism; 51. Slide; 52. Bidirectional screw; 53. Rotating rod; 54. Handwheel 1; 55. Slider; 6. Valve 1; 7. Valve 2; 8. Control mechanism; 81. Main control lever; 82. Handwheel 2; 83. Control lever 1; 84. Pulley 1; 85. Drive belt 1; 86. Control lever 2; 87. Pulley 2; 88. Drive belt 2; 9. Bottom plate; 10. Support plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figure 1-4 The utility model provides a device for checking the sealing of hot and cold water cross-linked polyethylene pipes, including a base 1, a detection mechanism 2 is provided on the base 1, the detection mechanism 2 includes a side plate 21, the side plate 21 is fixedly connected to one side of the base 1, a mounting hole is provided on the side plate 21, and a mounting plate 22 is installed in the mounting hole, a pipe hole is provided on the mounting plate 22, and the side wall of the side plate 21 is fixedly connected to four sliding rods 23, a clamping block 24 is slidably sleeved on the four sliding rods 23, a water hole 25 is provided on the clamping block 24, and a water pipe 26 is slidably connected to the inner wall of the water hole 25, and the end of the water pipe 26 away from the clamping block 24 is fixedly connected to the inner wall of the pipe hole, and a water injection pipe 27 is connected to the water pipe 26, and the water injection pipe 27 is vertically arranged between the water pipe 26. There are two detection mechanisms 2, and the other A detection mechanism 2 is installed on the other side of the base 1, and the two detection mechanisms 2 are symmetrically arranged with each other. A pipe 3 is clamped between the two clamping blocks 24 in the two detection mechanisms 2, and the pipe 3 is wrapped with filter paper 4. The adjustment mechanism 5 includes a slide groove 51, and the slide groove 51 is installed on the top of the base 1. The inner wall of the slide groove 51 is rotatably connected with a bidirectional screw 52. The side wall of one side plate 21 is rotatably connected with a rotating rod 53. The rotating end of the rotating rod 53 movably passes through the connected side plate 21 and the slide groove 51 and is fixedly connected to one end of the bidirectional screw 52. A handwheel 54 is installed on the other end of the rotating rod 53. The bidirectional threads of the bidirectional screw 52 are threaded with sliders 55. The two sliders 55 are fixedly connected to the two clamping blocks 24 respectively, and the two sliders 55 are both slidably connected to the inner wall of the slide groove 51.

[0026] In this embodiment, cold water is passed through the water pipe 26 to enter the polyethylene tube for filling. When there are tiny holes in the polyethylene tube, water leaks out of the holes. The filter paper 4 absorbs the water and becomes moist, thereby indicating the actual leaking area based on the moist surface. The location of the hole in the polyethylene tube can be intuitively determined, which facilitates subsequent repairs. Hot water is poured from the water injection pipe 27 on the water pipe 26 where the valve 1 6 is located to simulate the possible changes in the sealing of the pipeline 3 when it encounters a high temperature environment during actual use.

[0027] Example 2

[0028] See also Figure 1-4On the basis of embodiment 1, the present utility model provides a technical solution: preferably, a valve 6 is installed on the water pipe 26 in one detection mechanism 2, and a valve 2 7 is installed on the water pipe 26 in the other detection mechanism 2. The control mechanism 8 includes a main control rod 81, and a handwheel 2 82 is installed at one end of the main control rod 81. The valve stem of the valve 1 6 is fixedly connected with a control rod 1 83, and the control rod 1 83 and the main control rod 81 are both provided with a pulley 1 84, and a transmission belt 1 85 is connected between the two pulleys 1 84 for transmission. The valve stem of the valve 2 7 is fixedly connected with a control rod 2 86, and the control rod 2 86 and the main control rod 81 are both provided with a pulley 2 87, and a transmission belt 2 88 is connected between the two pulleys 2 87. The front side of the base 1 is fixedly connected with a bottom plate 9, and the top of the bottom plate 9 is fixedly connected with a support plate 10. The main control rod 81 movably passes through the support plate 10 and is rotatably connected to the support plate 10.

[0029] In this embodiment, by rotating the hand wheel 54 to cause the bidirectional screw 52 to drive the slider 55 closer to each other, polyethylene tubes of different sizes can be adapted for clamping, thereby improving the flexibility of loading. The clamping block 24 slides along the slide bar 23 to improve the stability of the clamping of the clamping block 24. The two ends of the polyethylene tube are aligned with the water holes 25 of the two clamping blocks 24 to facilitate water flow during hot and cold water testing.

[0030] Working principle: In the existing product, the polyethylene tube is placed horizontally between the two clamping blocks 24. By rotating the handwheel 1 54, the bidirectional screw 52 drives the slider 55 to move closer to each other, thereby clamping the polyethylene tube. This method can adapt to the clamping of polyethylene tubes of different sizes, which improves the flexibility of loading. At the same time, the clamping block 24 slides along the slide bar 23 to further improve the stability of the clamping of the clamping block 24. After the polyethylene tube loading is stable, the two ends of the polyethylene tube are aligned with the water holes 25 of the two clamping blocks 24. The diameter of the water hole 25 is smaller than the diameter of the polyethylene tube, and dry filter paper is wrapped around the outer wall of the polyethylene tube. At this time, rotating the handwheel 2 82 causes the main control rod 81 to rotate, and then under the linkage of the pulley 1 84 and the transmission belt 1 85, the valve stem of the valve 1 6 is synchronously driven to rotate. , and then open valve 1 6. At the same time, the pulley 2 87 and the transmission belt 2 88 are linked to synchronously drive the valve stem of valve 2 7 to rotate, and then close valve 2 7. At this time, cold water is poured from the water injection pipe 27 on the water pipe 26 where valve 2 7 is located. The cold water enters the polyethylene tube along the water pipe 26 to fill it, and is then discharged through another water pipe 26. Since the diameter of the water pipe 26 in this case is constant, when the water injection pressure is large, a pressure difference is generated in the polyethylene tube, and the polyethylene tube is filled first, and then gradually discharged from the water pipe 26. When there are tiny holes in the polyethylene tube, water leaks out of the holes, and the filter paper 4 absorbs the water and becomes wet, thereby indicating the actual leaking area according to the wet surface. The position of the hole in the polyethylene tube can be intuitively judged, which is convenient for subsequent repairs.

[0031] On the other hand, rotating handwheel 2 82 in the direction opposite to the above direction can cause valve 2 7 to open and valve 1 6 to close. At this time, hot water is poured from the water injection pipe 27 on the water pipe 26 where valve 1 6 is located, so that the hot water can fill the polyethylene pipe for sealing detection. The temperature of the hot water is relatively high, which can cause the pipe 3 and the material to expand due to heat, so as to simulate the sealing changes that may occur when the pipe 3 encounters a high temperature environment in actual use. In combination with cold water detection, the temperature of cold water is relatively low, which has little effect on the expansion of the pipe 3 and the material, and can directly detect the sealing changes of the pipe 3 at room temperature or low temperature, thereby further improving the comprehensiveness of the detection and improving the detection quality.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for inspecting the sealing performance of hot and cold water cross-linked polyethylene pipes, comprising a base (1), characterized in that: The base (1) is provided with a detection mechanism (2), the detection mechanism (2) comprising a side plate (21), the side plate (21) being fixedly connected to one side of the base (1), a mounting hole being provided on the side plate (21), and a mounting plate (22) being installed in the mounting hole, a pipe hole being provided on the mounting plate (22), a side wall of the side plate (21) being fixedly connected with four sliding rods (23), a clamping block (24) being slidably sleeved on the four sliding rods (23), a water hole (25) being provided on the clamping block (24), an inner wall of the water hole (25) being slidably connected with a water pipe (26), an end of the water pipe (26) away from the clamping block (24) being fixedly connected to the inner wall of the pipe hole, a water injection pipe (27) being connected and installed on the water pipe (26), and the water injection pipe (27) and the water pipe (26) being vertically arranged.

2. The device for inspecting the sealing performance of cold and hot water cross-linked polyethylene pipes according to claim 1, characterized in that: There are two detection mechanisms (2), another detection mechanism (2) is installed on the other side of the base (1), and the two detection mechanisms (2) are arranged symmetrically with each other.

3. The device for inspecting the sealing performance of cold and hot water cross-linked polyethylene pipes according to claim 2, characterized in that: A pipe (3) is clamped between two clamping blocks (24) in the two detection mechanisms (2), and the pipe (3) is wrapped with filter paper (4).

4. The device for inspecting the sealing performance of cold and hot water cross-linked polyethylene pipes according to claim 3, characterized in that: The adjusting mechanism (5) includes a slide groove (51), the slide groove (51) is installed on the top of the base (1), the inner wall of the slide groove (51) is rotatably connected to a bidirectional screw (52), the side wall of one of the side plates (21) is rotatably connected to a rotating rod (53), the rotating end of the rotating rod (53) movably passes through the connected side plate (21) and the slide groove (51) and is fixedly connected to one end of the bidirectional screw (52), the other end of the rotating rod (53) is installed with a hand wheel (54), the bidirectional threads of the bidirectional screw (52) are both threadedly sleeved with sliders (55), the two sliders (55) are respectively fixedly connected to the two clamping blocks (24), and the two sliders (55) are both slidably connected to the inner wall of the slide groove (51).

5. The device for inspecting the sealing performance of cold and hot water cross-linked polyethylene pipes according to claim 2, characterized in that: A valve 1 (6) is installed on the water pipe (26) in one of the detection mechanisms (2), and a valve 2 (7) is installed on the water pipe (26) in the other detection mechanism (2).

6. The device for inspecting the sealing performance of cold and hot water cross-linked polyethylene pipes according to claim 5, characterized in that: The control mechanism (8) includes a main control rod (81), one end of which is provided with a second hand wheel (82), a control rod (83) fixedly connected to the valve stem of the first valve (6), a pulley (84) sleeved on the first control rod (83) and the main control rod (81), a transmission belt (85) being connected between the two pulleys (84), a control rod (86) fixedly connected to the valve stem of the second valve (7), a pulley (87) sleeved on the second control rod (86) and the main control rod (81), a transmission belt (88) being connected between the two pulleys (87).

7. The device for inspecting the sealing performance of cold and hot water cross-linked polyethylene pipes according to claim 6, characterized in that: The front side of the base (1) is fixedly connected to a bottom plate (9), the top of the bottom plate (9) is fixedly connected to a support plate (10), and the main control rod (81) movably passes through the support plate (10) and is rotatably connected to the support plate (10).

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