PVC-U pipe pressure resistance detection device

Abstract

The utility model discloses PVC -U pipe pressure detection device, include: no. The utility model has the beneficial effects that: through the sliding support of no. The position of two pipe detection support can be adjusted, the convenient placement and detection of the PVC -U pipe on the pipe detection support, after the detection is completed, the pipe fitting placed on another pipe detection support can be switched to carry out next detection processing, two top sliding seats are symmetrically arranged on the top of the connecting support box and are slidably arranged, a side sealing frame is arranged in the inside of the top sliding seat and is fixed through a bolt, an inner sealing column is fixed in the inside of the side sealing frame, the inner sealing column is provided with a breather pipe, cooperates with the air pressure sensor and the air inlet pipe, can accurately realize the sealing detection to the internal air pressure of PVC -U pipe, the laser displacement sensor is installed in the inside of the bottom sliding frame, and the inside of the adjusting support is connected with the bottom sliding frame through the linear module.

Description

Technical Field

[0001] This utility model relates to the field of pressure resistance testing technology, specifically a pressure resistance testing device for PVC-U pipes. Background Technology

[0002] PVC-U pipes (rigid polyvinyl chloride pipes) are widely used in many fields such as building water supply and drainage, electrical cable sheathing, and agricultural irrigation due to their excellent chemical corrosion resistance, high strength, good water tightness, and cost-effectiveness. In practical applications, PVC-U pipes need to withstand a certain internal pressure, such as the pressure of water flow in water supply and drainage systems. Therefore, their pressure resistance directly affects the safety and reliability of the pipeline system. If the pressure resistance of PVC-U pipes does not meet the standards, problems such as cracking and leakage may occur during use, which will not only waste water resources but also potentially damage the surrounding environment and buildings, and even cause safety accidents. The testing methods for the pressure resistance of PVC-U pipes in the market are relatively traditional and have certain limitations. Common testing methods often use simple water pressure tests, which involve injecting water into the pipe and gradually increasing the pressure to observe whether the pipe body cracks or leaks to determine its pressure resistance. This requires a large amount of water resources and corresponding pressurization equipment. Moreover, water pressure tests can only qualitatively determine whether the pipe body can withstand a specific pressure and are difficult to accurately measure subtle changes in the pipe body under different pressures, such as displacement changes. Utility Model Content

[0003] The purpose of this invention is to provide a pressure resistance testing device for PVC-U pipes, in order to solve the problems mentioned in the background art. The common testing methods mostly adopt simple water pressure tests, which judge the pressure resistance by injecting water into the pipe and gradually increasing the pressure, and observing whether the pipe body cracks or leaks. This requires a large amount of water resources and corresponding pressurization equipment. Moreover, the water pressure test can only qualitatively determine whether the pipe body can withstand a specific pressure, and it is difficult to accurately measure the subtle changes of the pipe body under different pressures, such as displacement changes.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a PVC-U pipe pressure resistance testing device, comprising:

[0005] Support frame number one;

[0006] A sliding support is slidably mounted on top of the first support frame;

[0007] Two pipe testing supports are provided, symmetrically installed on top of the sliding support.

[0008] A connecting support box is set at the bottom of the first support frame. Two top sliding seats are symmetrically slidably arranged on the top of the connecting support box, and side sealing frames are installed on the inner side of the two top sliding seats.

[0009] An inner sealing column is fixed inside the side sealing frame, and a vent pipe is provided inside the inner sealing column;

[0010] A pressure sensor is installed inside one of the side seals. One end of one of the vent pipes is connected to the pressure sensor, and one end of the other vent pipe is fixed to an air inlet pipe.

[0011] The adjusting part is located inside the connecting support box, and the top sliding seat is connected to the adjusting part;

[0012] The second support frame is located outside the first support frame. The top of the second support frame is bolted to the first cylinder. The output end of the first cylinder is fixed to an adjusting bracket. The bottom of the adjusting bracket is slidably provided with two bottom sliding brackets.

[0013] Laser displacement sensors are symmetrically installed on the inner side of the bottom sliding frame.

[0014] As a preferred embodiment of this utility model: the adjusting part includes a bidirectional lead screw, a movable slider, a second limiting slider, and a first servo motor. The bidirectional lead screw is rotatably installed inside the connecting support box. Two movable sliders are symmetrically installed on the outer side of the bidirectional lead screw. The movable sliders are slidably connected to the connecting support box. The top of the movable sliders is fixedly connected to the top sliding seat. A first servo motor is installed on one side of the connecting support box. The output end of the first servo motor is fixedly connected to the bidirectional lead screw. Two second limiting sliders are symmetrically slidably installed inside the movable sliders. The second limiting sliders are fixedly connected to the connecting support box.

[0015] As a preferred embodiment of this utility model: two linear modules are symmetrically installed inside the adjusting bracket. The movable slide of the linear module is connected to the bottom sliding frame. Two first-position sliding rods are symmetrically slidably arranged inside the bottom sliding frame. Both ends of the first-position sliding rods are fixedly connected to side fixing plates. The top of the side fixing plates is fixedly connected to the adjusting bracket.

[0016] As a preferred embodiment of this utility model: a second cylinder is bolted to one side of the first support frame, the output end of the second cylinder is fixedly connected to the sliding support, and four second limit rods are symmetrically slidably arranged inside the first support frame, one end of the second limit rod is fixedly connected to the sliding support.

[0017] As a preferred embodiment of this utility model: four No. 1 limit rods are symmetrically fixed to the top of the adjusting bracket, and the No. 1 limit rods are slidably connected to the No. 2 support frame.

[0018] As a preferred embodiment of this utility model: a gusset cloth is provided between both sides of the movable slider and the connecting support box, and a solenoid valve is installed on the air inlet pipe.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a sliding support platform slidably set on the first support frame, and pipe detection supports symmetrically installed on the top of the sliding support platform by bolts. The position of the pipe detection supports can be flexibly adjusted, and the positions of the two pipe detection supports can be adjusted to facilitate the placement and detection of PVC-U pipes on the pipe detection supports. After the detection is completed, the pipe fittings placed on the other pipe detection support platform can be switched for the next detection process. Two top sliding seats are symmetrically slidably set on the top of the connecting support box. Side sealing frames are installed on the inner side of the top sliding seats by bolts. The inner sealing column is fixed inside the side sealing frame. The inner sealing column is equipped with a vent pipe. With the help of a pressure sensor and an air inlet pipe, the sealing detection of the internal air pressure of the PVC-U pipe can be accurately realized. A laser displacement sensor is installed on the inner side of the bottom sliding frame, and the internal part of the adjusting bracket is connected to the bottom sliding frame through a linear module, which can flexibly adjust the position of the laser displacement sensor and realize flexible monitoring of the displacement changes of the PVC-U pipe under different pressures. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a right view of the present invention;

[0022] Figure 3 This is a bottom view of the adjustable bracket of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the adjusting bracket of this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the connecting support box of this utility model.

[0025] In the diagram: 1. Support frame 1; 2. Sliding support; 3. Pipe detection support; 4. Support frame 2; 5. Cylinder 1; 6. Adjusting bracket; 7. Limiting rod 1; 8. Linear module; 9. Bottom sliding frame; 10. Laser displacement sensor; 11. Limiting slide rod 1; 12. Connecting support box; 13. Top sliding seat; 14. Side sealing frame; 15. Inner sealing column; 16. Vent pipe; 17. Inlet pipe; 18. Solenoid valve; 19. Air pressure sensor; 20. Bidirectional lead screw; 21. Moving slider; 22. Limiting slide rod 2; 23. Servo motor 1; 24. Accordion cloth 1; 25. Cylinder 2; 26. Limiting rod 2; 27. Side fixing plate. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1 to 5 This utility model provides a technical solution: a PVC-U pipe pressure resistance testing device, comprising: a first support frame 1; a sliding support platform 2 slidably disposed on the top of the first support frame 1; two pipe testing supports 3 symmetrically installed on the top of the sliding support platform 2 by bolts; a connecting support box 12 disposed at the bottom of the first support frame 1, and two top sliding seats 13 symmetrically slidably disposed on the top of the connecting support box 12, with side sealing frames 14 bolted to the inner side of each of the two top sliding seats 13; an inner sealing column 15 fixedly connected to the inside of the side sealing frame 14, and a vent pipe 1 being disposed inside the inner sealing column 15. 6; The air pressure sensor 19 is installed inside one of the side sealing frames 14, one end of one of the air pipes 16 is connected to the air pressure sensor 19, and one end of the other air pipe 16 is fixedly connected to the air inlet pipe 17; The adjustment part is placed inside the connecting support box 12, and the top sliding seat 13 is connected to the adjustment part; The second support frame 4 is installed outside the first support frame 1, and the top of the second support frame 4 is bolted to the first cylinder 5. The output end of the first cylinder 5 is fixedly connected to the adjustment bracket 6, and two bottom sliding frames 9 are slidably installed at the bottom of the adjustment bracket 6; The laser displacement sensor 10 is symmetrically installed inside the bottom sliding frame 9.

[0028] It should be noted that, in this embodiment, a sliding support 2 is slidably mounted on the first support frame 1. Two pipe detection supports 3 are symmetrically mounted on the top of the sliding support 2 by bolts. A second cylinder 25 is mounted on one side of the first support frame 1, and its output end is fixedly connected to the sliding support 2. At the same time, four second limit rods 26 are symmetrically slidably mounted inside the first support frame 1, one end of which is fixedly connected to the sliding support 2. The second cylinder 25 provides power to drive the sliding support 2 to move smoothly, thereby flexibly adjusting the position of the pipe detection supports 3 and placing the two pipe detection supports 3 in a position that allows for easy movement of the sliding support 2. The support 3 is adjusted to a suitable position to facilitate the placement of PVC-U pipes for testing. After testing, another pipe can be placed on the support 3 for the next testing. The adjustment part inside the connecting box 12 consists of a bidirectional lead screw 20, a moving slider 21, a second limit slide rod 22, and a first servo motor 23. The first servo motor 23 drives the bidirectional lead screw 20 to rotate, driving the two moving sliders 21 to move precisely and stably towards or away from each other along the second limit slide rod 22, thereby driving the top sliding seat 13 to move precisely. Move and precisely adjust the positions of the side sealing frame 14 and the inner sealing column 15 to ensure accurate sealing of both ends of the PVC-U pipe. A vent pipe 16 is installed inside the inner sealing column 15. A pressure sensor 19 is installed inside one of the side sealing frames 14. One end of one vent pipe 16 is connected to the pressure sensor 19, and the other end of the vent pipe 16 is fixed to an air inlet pipe 17. A solenoid valve 18 is installed on the air inlet pipe 17. During testing, the solenoid valve 18 is opened, and gas at a certain pressure is injected into the PVC-U pipe through the air inlet pipe 17. The pressure sensor 19 monitors the changes in air pressure inside the pipe in real time. If the air pressure remains stable within a specified time, it indicates that the PVC-U pipe has good sealing performance. If the air pressure drops, it indicates that there is a leakage problem in the pipe. The first gusset cloth 24 set between the two sides of the movable slider 21 and the connecting support box 12 can prevent dust, debris and other objects from entering the interior of the connecting support box 12, protect the bidirectional lead screw 20, movable slider 21 and other components in the adjustment part, and ensure the accuracy and stability of air pressure detection. The laser displacement sensor 10 is symmetrically installed inside the bottom sliding frame 9.The first cylinder 5 drives the adjusting bracket 6 to move up and down. The linear module 8 drives the moving slide table to move the bottom sliding frame 9 along the first limiting slide rod 11, thereby flexibly adjusting the up-down and horizontal position of the laser displacement sensor 10. When testing the pressure resistance of the PVC-U pipe, the PVC-U pipe will produce corresponding displacement as the air pressure inside the pipe changes. The laser displacement sensor 10, after being adjusted, can accurately emit laser light and receive reflected light. By measuring the time or phase change of the laser round trip, the displacement change of the PVC-U pipe under different pressures can be accurately calculated, thereby comprehensively evaluating the pressure resistance performance of the PVC-U pipe. The four first limiting rods 7 symmetrically fixed to the top of the adjusting bracket 6 are slidably connected to the second support frame 4. When the adjusting bracket 6 moves relative to the second support frame 4, they play a guiding and limiting role, ensuring the smoothness and straightness of the movement of the adjusting bracket 6, avoiding the adjustment bracket 6 from shifting or shaking during the movement, ensuring the positional stability of the laser displacement sensor 10 and other components, and improving the accuracy of displacement monitoring.

[0029] The specific architecture and operation logic of the cylinder, linear module 8, laser displacement sensor 10, solenoid valve 18, air pressure sensor 19, and servo motor in this application, which are coordinated and controlled by an external controller, are consistent with the existing technology in this field. The servo motors used are all equipped with encoders, which can provide real-time feedback on the speed, position, and other information of the servo motors. This control method has been maturely applied in many similar industrial scenarios, so it will not be discussed in detail here.

[0030] The linear module 8 includes a bracket for mounting guide rails, a movable slide table that slides on the guide rails, a lead screw system consisting of a lead screw and a nut, and a servo motor that drives the lead screw. The nut is connected to the movable slide table, and the servo motor drives the lead screw to rotate. The rotation is converted into linear motion by the lead screw and nut, which drives the slide table to move. It is also equipped with a bellows cloth / protective cover to protect internal components from dust and impurities, extend service life, and ensure operating accuracy. The helical motion of the lead screw and nut can convert rotational motion into linear motion, which drives the lead screw to rotate through the servo motor. The lead screw drives the movable slide table to move on the guide rails.

[0031] In one embodiment, such as Figure 1 , Figure 2 and Figure 5As shown, the adjustment unit includes a bidirectional lead screw 20, a movable slider 21, a second limit slider 22, and a first servo motor 23. The bidirectional lead screw 20 is rotatably installed inside the connecting support box 12. Two movable sliders 21 are symmetrically installed on the outer side of the bidirectional lead screw 20. The movable sliders 21 are slidably connected to the connecting support box 12. The top of the movable sliders 21 is fixedly connected to the top sliding seat 13. A first servo motor 23 is installed on one side of the connecting support box 12 by bolts. The output end of the first servo motor 23 is fixedly connected to the bidirectional lead screw 20. Two second limit sliders 22 are symmetrically slidably installed inside the movable sliders 21. The second limit sliders 22 are fixedly connected to the connecting support box 12.

[0032] It should be noted that in this embodiment, when the No. 1 servo motor 23 drives the bidirectional lead screw 20 to rotate, it can drive the two moving sliders 21 to move precisely and stably in opposite directions or away from each other along the No. 2 limit slider 22, thereby driving the top sliding seat 13 to move precisely, thereby accurately adjusting the position of the side sealing frame 14 and the inner sealing column 15, ensuring the precise sealing of the PVC-U pipe, and ensuring the accuracy and stability of the air pressure detection.

[0033] In one embodiment, such as Figure 3 and Figure 4 As shown, two linear modules 8 are symmetrically installed inside the adjusting bracket 6 by bolts. The moving slide of the linear module 8 is connected to the bottom sliding frame 9. Two first limit slide rods 11 are symmetrically slidably arranged inside the bottom sliding frame 9. Both ends of the first limit slide rod 11 are fixedly connected to side fixing plates 27. The top of the side fixing plates 27 is fixedly connected to the adjusting bracket 6.

[0034] It should be noted that in this embodiment, the linear module 8 can precisely control the movement direction and distance of the bottom sliding frame 9 along the first limiting slide bar 11, so that the laser displacement sensor 10 installed on the inner side of the bottom sliding frame 9 can be adjusted in position to accurately monitor the pressure displacement change of the PVC-U pipe.

[0035] In one embodiment, such as Figure 1 As shown, a second cylinder 25 is bolted to one side of the first support frame 1. The output end of the second cylinder 25 is fixedly connected to the sliding support 2. Four second limit rods 26 are symmetrically slidably arranged inside the first support frame 1. One end of the second limit rod 26 is fixedly connected to the sliding support 2.

[0036] It should be noted that in this embodiment, the second cylinder 25 can provide stable power output to drive the sliding support 2 to move smoothly, thereby achieving precise adjustment of the position of the pipe detection support 3 on the sliding support 2, which facilitates the placement, detection, and pipe fitting switching of PVC-U pipes after detection.

[0037] In one embodiment, such as Figures 1 to 4As shown, four first limit rods 7 are symmetrically fixed to the top of the adjusting bracket 6, and the first limit rods 7 are slidably connected to the second support frame 4.

[0038] It should be noted that in this embodiment, the first limiting rod 7 plays a guiding and limiting role when the adjusting bracket 6 moves relative to the second support frame 4, ensuring the smoothness and straightness of the movement of the adjusting bracket 6, and preventing the adjusting bracket 6 from deviating or shaking during the movement, thereby ensuring the positional stability of components such as the laser displacement sensor 10 installed at the bottom of the adjusting bracket 6.

[0039] In one embodiment, such as Figure 1 , Figure 2 and Figure 5 As shown, a No. 1 accordion cloth 24 is provided between both sides of the movable slider 21 and the connecting support box 12, and a solenoid valve 18 is installed on the air inlet pipe 17.

[0040] It should be noted that in this embodiment, the first accordion cloth 24 can prevent dust, debris and other objects from entering the interior of the connecting support box 12, protect the bidirectional lead screw 20, moving slider 21 and other components in the adjustment part, extend their service life and ensure the normal operation of the adjustment part.

[0041] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PVC-U pipe pressure resistance testing device, characterized in that, include: Support frame No. 1 (1); Sliding support (2), the sliding support (2) is slidably set on the top of the first support frame (1); Pipe testing support (3) is symmetrically installed on the top of sliding support (2), and there are two pipe testing supports (3); Connecting support box (12) is set at the bottom of the first support frame (1). Two top sliding seats (13) are symmetrically slidably arranged on the top of the connecting support box (12). Side sealing frames (14) are installed on the inner side of the two top sliding seats (13). An inner sealing column (15) is fixed inside the side sealing frame (14), and a vent pipe (16) is provided inside the inner sealing column (15). A pressure sensor (19) is installed inside one of the side seals (14). One end of one of the ventilation pipes (16) is connected to the pressure sensor (19), and one end of the other ventilation pipe (16) is fixed to an air inlet pipe (17). An adjustment section is located inside the connecting support box (12), and the top sliding seat (13) is connected to the adjustment section; Second support frame (4) is set outside the first support frame (1). The top of the second support frame (4) is bolted to a first cylinder (5). The output end of the first cylinder (5) is fixed to an adjusting bracket (6). The bottom of the adjusting bracket (6) is slidably provided with two bottom sliding brackets (9). Laser displacement sensor (10) is symmetrically installed on the inner side of the bottom sliding frame (9).

2. The PVC-U pipe pressure resistance testing device according to claim 1, characterized in that: The adjustment unit includes a bidirectional lead screw (20), a movable slider (21), a second limit slider (22), and a first servo motor (23). The bidirectional lead screw (20) is rotatably installed inside the connecting support box (12). Two movable sliders (21) are symmetrically installed on the outside of the bidirectional lead screw (20). The movable sliders (21) are slidably connected to the connecting support box (12). The top of the movable sliders (21) is fixedly connected to the top sliding seat (13). A first servo motor (23) is installed on one side of the connecting support box (12). The output end of the first servo motor (23) is fixedly connected to the bidirectional lead screw (20). Two second limit sliders (22) are symmetrically slidably installed inside the movable sliders (21). The second limit sliders (22) are fixedly connected to the connecting support box (12).

3. The PVC-U pipe pressure resistance testing device according to claim 2, characterized in that: The adjusting bracket (6) has two linear modules (8) symmetrically installed inside. The moving slide of the linear module (8) is connected to the bottom sliding frame (9). The bottom sliding frame (9) has two first-position sliding rods (11) symmetrically slidably installed inside. Both ends of the first-position sliding rods (11) are fixedly connected to side fixing plates (27). The top of the side fixing plates (27) is fixedly connected to the adjusting bracket (6).

4. The PVC-U pipe pressure resistance testing device according to claim 3, characterized in that: A second cylinder (25) is bolted to one side of the first support frame (1). The output end of the second cylinder (25) is fixedly connected to the sliding support (2). Four second limit rods (26) are symmetrically slidably arranged inside the first support frame (1). One end of the second limit rod (26) is fixedly connected to the sliding support (2).

5. The PVC-U pipe pressure resistance testing device according to claim 4, characterized in that: The top of the adjusting bracket (6) is symmetrically fixed with four first limiting rods (7), and the first limiting rods (7) are slidably connected to the second support frame (4).

6. The PVC-U pipe pressure resistance testing device according to claim 5, characterized in that: A first-class accordion cloth (24) is provided between both sides of the movable slider (21) and the connecting support box (12), and a solenoid valve (18) is installed on the air inlet pipe (17).

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