A PE valve airtightness test device

Abstract

The present invention discloses a PE valve airtightness test device, comprising: a bottom plate; four support rods; four test mechanisms, each test mechanism including a pressing base and an inlet joint, the pressing base being directly below the inlet joint, a detection tube fixedly installed inside the pressing base, a pressure sensor and a pressure display meter fixedly installed on the surface of the detection tube extending outside the pressing base, and an air inlet pipe fixedly installed inside the inlet joint. The structure of the present invention is simple, the operation is convenient and fast, the inflation and pressure holding time can be adjusted according to the airtightness requirements of PE valves to be tested with different specifications, multiple PE valves can be simultaneously subjected to airtightness detection, the judgment result is intuitive, it does not require the operator to have a high operation level, the detection efficiency is high, there is no external force that affects the test result on the PE valve to be tested, and the work efficiency is greatly improved and the labor intensity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of PE valves, and particularly to a PE valve airtightness test device. Background Technique

[0002] A valve is a pipeline accessory used to open and close pipelines, control the flow direction, and adjust and control parameters of the transported medium (temperature, pressure, and flow rate). According to its functions, it can be divided into shut-off valves, check valves, regulating valves, etc. A valve is a control component in a fluid transportation system, with functions such as cutoff, regulation, diversion, prevention of backflow, pressure stabilization, flow splitting, or overflow pressure relief. Valves used in fluid control systems range from the simplest stop valves to various valves used in extremely complex automatic control systems, and their varieties and specifications are quite numerous. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media. Valves are also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, duplex steel valves, plastic valves, non-standard customized valves, and PE valves, etc. Generally, in the production of PE valves, an airtightness test needs to be carried out on the completed PE valves.

[0003] However, in the current existing technology, the detection of the airtightness of PE valves often uses manual methods. Most of them place the PE valves in water and then introduce gas, which not only has problems such as low work efficiency and large errors, but also easily damages the PE valves. Summary of the Invention

[0004] The purpose of the present invention is to provide a PE valve airtightness test device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A PE valve airtightness test device, comprising:

[0006] A bottom plate;

[0007] Support rods, and there are four support rods;

[0008] Testing mechanisms, and there are four groups of testing mechanisms. The testing mechanism includes a pressing base and an inlet joint. The pressing base is directly below the inlet joint. A detection tube is fixedly installed inside the pressing base, and a pressure sensor and a pressure display meter are fixedly installed on the surface of the detection tube extending outside the pressing base. An air inlet pipe is fixedly installed inside the inlet joint;

[0009] A top plate;

[0010] A clamping mechanism;

[0011] A PLC controller;

[0012] Among them, four of the support rods are fixedly connected to the periphery of the top end of the bottom plate, the top plate is fixedly connected to the top ends of the four support rods, the test mechanism is fixedly installed inside the support rods, and the PLC controller is fixedly installed on the surface of one of the support rods;

[0013] Among them, the PLC controller is electrically connected to the pressure sensor.

[0014] Preferably, it further includes:

[0015] Partition board;

[0016] Among them, the partition board is fixedly installed on the inner surface of the support rod.

[0017] Preferably, the clamping mechanism includes a motor, the power output end of the motor penetrates the top plate and is fixedly connected with a threaded screw rod, a sliding nut is slidably installed on the outer part of the threaded screw rod, and a moving plate is fixedly installed on the outer wall surface of the sliding nut;

[0018] Among them, the motor is fixedly installed on the top surface of the top plate by bolts, the bottom end of the threaded screw rod is rotatably connected to the partition board through a bearing seat, and the PLC controller is electrically connected to the motor.

[0019] Preferably, it further includes:

[0020] Buffer mechanism, the buffer mechanism includes a sleeve and a buffer rod, the buffer rod is slidably installed inside the sleeve, a spring is fixedly installed at the bottom end inside the sleeve, the bottom end of the buffer rod extends into the sleeve and is fixedly connected with a piston, and the piston is slidably connected with the sleeve;

[0021] Among them, the bottom end of the sleeve is fixedly connected to the top end of the inlet joint, and the top end of the buffer rod is fixedly connected to the bottom end of the moving plate.

[0022] Preferably, the test mechanism further includes an air pump, and an air delivery branch pipe is fixedly connected to the air delivery end of the air pump;

[0023] Among them, the air pump is fixedly installed on the top surface of the top plate, and the PLC controller is electrically connected to the air pump.

[0024] Preferably, it further includes:

[0025] Alarm, the alarm is fixedly installed on the surface of one of the support rods;

[0026] Among them, the alarm is electrically connected to the PLC controller.

[0027] Preferably, a first sealing ring is embedded on the upper surface of the pressing base, and a second sealing ring is embedded on the bottom surface of the inlet joint.

[0028] Preferably, the top end of the detection tube extends to the upper surface of the pressing base, the bottom end of the detection tube penetrates through the pressing base and is fixedly connected to the surface of the bottom plate, the bottom end of the air inlet pipe extends to the bottom surface of the inlet joint, and the top end of the air inlet pipe penetrates through the inlet joint and is fixedly connected to the gas transmission branch pipe.

[0029] Preferably, the gas transmission branch pipe is specifically an elastic corrugated pipe.

[0030] Preferably, the end faces of the pressing base and the inlet joint are both conical structures.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] 1. Through the test mechanism provided in the present invention, the PE valve is vertically placed on the pressing base, so that the lower interface of the PE valve is inserted into the pressing base. Then, the inlet joint moves downward to the upper interface of the PE valve, and the communication between the inlet joint, the PE valve and the pressing base can be achieved. Then, the air pump works to input air into the gas transmission branch pipe, and then enters the PE valve through the air inlet pipe, and then passes through the PE valve and enters the detection tube. At the same time, the pressure value in the detection tube can be set in advance in the PLC controller. When the gas pressure in the detection tube detected by the pressure sensor reaches the preset value, the air pump can be turned off to stop the gas transmission, thus avoiding damage to the PE valve caused by excessive gas transmission. When the pressure in the detection tube drops to a certain range, the system judges that the PE valve to be tested leaks air and the airtightness is unqualified, and the alarm will sound. At the same time, the gas pressure in the detection tube can also be observed through the pressure display meter, and the airtightness detection result of the PE valve can be more intuitively understood, so that the airtightness of the PE valve can be effectively detected.

[0033] 2. The structure of the present invention is simple, the operation is convenient and fast. The inflation and pressure holding time can be adjusted according to the airtightness requirements of different specifications of the PE valves to be tested. The airtightness detection of multiple PE valves can be carried out simultaneously, the judgment result is intuitive, and it does not require the operator to have a high operation level. The detection efficiency is high, and there is no external force that affects the test result on the PE valve to be tested, greatly improving the work efficiency and reducing the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is the overall structural schematic diagram of the present invention;

[0035] Figure 2 is the internal structural schematic diagram of the present invention;

[0036] Figure 3 is the top view of the present invention;

[0037] Figure 4 is the structural schematic diagram of the moving plate of the present invention;

[0038] Figure 5 Schematic diagram of the pressing base structure of the present invention;

[0039] Figure 6 Schematic diagram of the inlet joint structure of the present invention;

[0040] Figure 7 Schematic diagram of the buffer mechanism structure of the present invention.

[0041] In the figure: 1000 - bottom plate; 2000 - support rod; 2100 - alarm; 3000 - test mechanism; 3100 - air pump; 3110 - air delivery branch pipe; 3200 - pressing base; 3300 - inlet joint; 3310 - buffer mechanism; 3311 - sleeve; 3312 - buffer rod; 3313 - piston; 3314 - spring; 3400 - detection tube; 3500 - pressure display meter; 3600 - first sealing ring; 3700 - second sealing ring; 3800 - air inlet pipe; 3900 - pressure sensor; 4000 - top plate; 5000 - clamping mechanism; 5100 - motor; 5200 - moving plate; 5300 - threaded lead screw; 5400 - sliding nut; 6000 - partition board; 7000 - PLC controller. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Embodiment 1:

[0044] Please refer to Figures 1-6 , the present invention provides a technical solution: a PE valve airtightness test device, including: a bottom plate 1000, a support rod 2000, a test mechanism 3000, a top plate 4000, a clamping mechanism 5000, and a PLC controller 7000.

[0045] Among them, both the bottom plate 1000 and the top plate 4000 are circular structures.

[0046] Furthermore, the bottom plate 1000 and the top plate 4000 can be made of metal materials or alloy materials such as iron, steel, and stainless steel.

[0047] Among them, there are four support rods 2000.

[0048] Furthermore, the support rod 2000 can be made of metal materials or alloy materials such as iron, steel, and stainless steel.

[0049] Among them, four of the support rods 2000 are fixedly connected to the four corners of the top end of the bottom plate 1000, the top plate 4000 is fixedly connected to the top ends of the four support rods 2000, the test mechanism 3000 is fixedly installed inside the support rods 2000, and the PLC controller 7000 is fixedly installed on the surface of one of the support rods 2000.

[0050] Among them, the PLC controller 7000 is electrically connected to the pressure sensor 3900.

[0051] Among them, there are four groups of the test mechanisms 3000. The test mechanism 3000 includes a pressing base 3200 and an inlet joint 3300. The pressing base 3200 is located directly below the inlet joint 3300. The pressing base 3200 is fixedly connected to the partition 6000. A detection tube 3400 is fixedly installed inside the pressing base 3200. A pressure sensor 3900 and a pressure display meter 3500 are fixedly installed on the surface of the detection tube 3400 extending outside the pressing base 3200. An air inlet pipe 3800 is fixedly installed inside the inlet joint 3300.

[0052] Further, the model of the pressure sensor 3900 is MIK-P300.

[0053] Further, place the PE valve vertically on the pressing base 3200 so that the lower interface of the PE valve is inserted into the pressing base 3200. Then, the inlet joint 3300 moves downward to the upper interface of the PE valve, and the connection between the inlet joint 3300, the PE valve, and the pressing base 3200 can be achieved. Then, the air pump 3100 works to input air into the air delivery branch pipe 3110, and then enters the PE valve through the air inlet pipe 3800, and then passes through the PE valve and enters the detection tube 3400. At the same time, the pressure value inside the detection tube can be set in advance in the PLC controller 7000. When the gas pressure inside the detection tube detected by the pressure sensor 3900 reaches the preset value, the air pump 3100 can be turned off to stop the gas delivery, thus avoiding damage to the PE valve caused by excessive gas delivery. When the pressure inside the detection tube 3400 drops to a certain range, the system determines that the PE valve to be tested leaks air and the airtightness is unqualified, and the alarm 2100 will emit an alarm sound. At the same time, the gas pressure inside the detection tube 3400 can also be observed through the pressure display meter 3500, and the airtightness detection result of the PE valve can be more intuitively understood, so as to effectively detect the airtightness of the PE valve.

[0054] Further, the pressing base 3200 and the inlet joint 3300 are on the same vertical axis, which can realize the clamping of the PE valve.

[0055] Among them, it further includes: a partition plate 6000.

[0056] Among them, the partition plate 6000 is fixedly installed on the inner surface of the support rod 2000.

[0057] Among them, the clamping mechanism 5000 includes a motor 5100. The power output end of the motor 5100 penetrates through the top plate 4000 and is fixedly connected with a threaded lead screw 5300. A sliding nut 5400 is slidably installed on the outer part of the threaded lead screw 5300, and a moving plate 5200 is fixedly installed on the outer wall surface of the sliding nut 5400.

[0058] Among them, the motor 5100 is fixedly installed on the top surface of the top plate 4000 through bolts. The bottom end of the threaded lead screw 5300 is rotatably connected to the partition plate 6000 through a bearing seat. The PLC controller 7000 is electrically connected to the motor 5100.

[0059] Further, when the motor 5100 works, it can drive the threaded lead screw 5300 to rotate, and then drive the sliding nut 5400 to move on the threaded lead screw 5300. When the motor 5100 drives the threaded lead screw 5300 to rotate clockwise, the sliding nut 5400 will move downward, and then can drive the inlet joint 3300 to move downward through the moving plate 5200, and the clamping of the PE valve can be completed. When the motor 5100 drives the threaded lead screw 5300 to rotate counterclockwise, the sliding nut 5400 will move upward, and then can drive the inlet joint 3300 to move upward through the moving plate 5200, and the PE valve can be loosened for exhaust. The operation is convenient and fast, replacing the deficiency of traditional manual fixation and not damaging the PE valve.

[0060] Among them, the test mechanism 3000 further includes an air pump 3100. The air delivery end of the air pump 3100 is fixedly connected with an air delivery branch pipe 3110.

[0061] Further, when the air pump 3100 works, it can realize the delivery of gas to the PE valve.

[0062] Among them, the air pump 3100 is fixedly installed on the top surface of the top plate 4000. The PLC controller 7000 is electrically connected to the air pump 3100.

[0063] Among them, it further includes: an alarm 2100. The alarm 2100 is fixedly installed on the surface of one of the support rods 2000.

[0064] Further, when the pressure in the detection tube 3400 drops to a certain range, the system immediately judges that the PE valve to be tested leaks air and the airtightness is unqualified, and the alarm 2100 will emit an alarm sound, which can inform people of the test result in the first time.

[0065] Among them, the alarm 2100 is electrically connected to the PLC controller 7000.

[0066] Among them, a first sealing ring 3600 is embedded on the upper surface of the pressing base 3200, and a second sealing ring 3700 is embedded on the bottom surface of the inlet joint 3300.

[0067] Furthermore, the first sealing ring 3600 and the second sealing ring 3700 can ensure the sealing between the pressing base 3200 and the inlet joint 3300 and the PE valve, avoiding air leakage at the connection, and ensuring the accuracy of the airtightness test.

[0068] Among them, the top end of the detection tube 3400 extends to the upper surface of the pressing base 3200, the bottom end of the detection tube 3400 penetrates through the pressing base 3200 and is fixedly connected to the surface of the bottom plate 1000, the bottom end of the air inlet pipe 3800 extends to the bottom surface of the inlet joint 3300, and the top end of the air inlet pipe 3800 penetrates through the inlet joint 3300 and is fixedly connected to the air delivery branch pipe 3110, so that the air inlet pipe 3800 and the air delivery branch pipe 3110 are interconnected.

[0069] Furthermore, the communication among the detection tube 3400, the PE valve and the air inlet pipe 3800 can be realized.

[0070] Among them, the air delivery branch pipe 3110 is specifically an elastic corrugated pipe.

[0071] Furthermore, when the moving plate 5200 moves, it will also drive the inlet joint 3300 to move. Since the air delivery branch pipe 3110 is elastic, it will not affect the normal movement of the inlet joint 3300.

[0072] Among them, the end faces of the pressing base 3200 and the inlet joint 3300 are both conical structures.

[0073] Furthermore, the upper end of the pressing base 3200 is an interface with a guiding conical surface, and the lower end of the inlet joint 3300 is an interface with a guiding conical surface, so that the ports of the pressing base 3200 and the inlet joint 3300 are inserted into the two ends of the PE valve, thereby completing the clamping and fixing of the PE valve.

[0074] Based on the above embodiments, the device has a simple structure, is convenient and fast to operate, can adjust the inflation and pressure holding time according to the airtightness requirements of different specifications of PE valves to be tested, can simultaneously perform airtightness detection on multiple PE valves, the judgment result is intuitive, does not require operators to have a high operation level, has a high detection efficiency, has no external force that affects the test result on the PE valve to be tested, and greatly improves the work efficiency and reduces the labor intensity.

[0075] Embodiment 2:

[0076] Please refer to Figure 1 、 Figure 2 and Figure 7 , the present invention provides a technical solution: a PE valve airtightness test device, comprising: a bottom plate 1000, a support rod 2000, a test mechanism 3000, a top plate 4000, a clamping mechanism 5000 and a PLC controller 7000.

[0077] Among them, both the bottom plate 1000 and the top plate 4000 are circular structures.

[0078] Further, the bottom plate 1000 and the top plate 4000 can be made of metal materials or alloy materials such as iron, steel, stainless steel, etc.

[0079] Among them, there are four support rods 2000.

[0080] Further, the support rods 2000 can be made of metal materials or alloy materials such as iron, steel, stainless steel, etc.

[0081] Among them, the four support rods 2000 are fixedly connected to the periphery of the top end of the bottom plate 1000, the top plate 4000 is fixedly connected to the top ends of the four support rods 2000, the test mechanism 3000 is fixedly installed inside the support rods 2000, and the PLC controller 7000 is fixedly installed on the surface of one of the support rods 2000.

[0082] Among them, the PLC controller 7000 is electrically connected to the pressure sensor 3900.

[0083] Among them, it further includes: a buffer mechanism 3310.

[0084] Among them, the buffer mechanism 3310 includes a sleeve 3311 and a buffer rod 3312. The buffer rod 3312 is slidably installed inside the sleeve 3311. A spring 3314 is fixedly installed at the bottom end inside the sleeve 3311. The bottom end of the buffer rod 3312 extends into the sleeve 3311 and is fixedly connected to a piston 3313. The piston 3313 is slidably connected to the sleeve 3311.

[0085] Further, when the moving plate 5200 drives the inlet joint 3300 to move downward to the upper interface of the PE valve, the moving plate 5200 will act on the buffer rod 3312. When the inlet joint 3300 touches the PE valve and stops moving, the buffer rod 3312 will drive the piston 3313 to act on the spring 3314 and compress the spring 3314. Since the spring 3314 has very good elasticity, the damage caused to the PE valve when the inlet joint 3300 descends can be reduced, so that the inlet joint 3300 and the PE valve are in elastic contact, avoiding damage to the PE valve.

[0086] Among them, a fixed connection is provided between the bottom end of the sleeve 3311 and the top end of the inlet joint 3300, and a fixed connection is provided between the top end of the buffer rod 3312 and the bottom end of the moving plate 5200.

[0087] Furthermore, the inlet joint 3300 is fixed to the bottom of the moving plate 5200 through the buffer mechanism 3310.

[0088] As described in the above embodiments, since the spring 3314 has very good elasticity, the damage caused to the PE valve when the inlet joint 3300 descends can be reduced, such that the inlet joint 3300 and the PE valve are in elastic contact, avoiding damage to the PE valve.

[0089] In several embodiments provided by the present invention, it should be understood that the disclosed device can be implemented in other ways. The shown or discussed welding or threaded connection or winding connection with each other can be assisted by equipment, such as welding with a welding torch and threaded connection with a wrench, etc. The component materials of the device are diverse, such as metal materials like aluminum alloy, steel, and copper, and are formed by casting or mechanical stamping, etc.

[0090] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0091] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A PE valve airtightness test device, characterized in that Including: A bottom plate (1000), and the bottom plate (1000) has a circular structure; Support rods (2000), and there are four support rods (2000); Testing mechanisms (3000), and there are four groups of testing mechanisms (3000). The testing mechanism (3000) includes a pressing base (3200) and an inlet joint (3300). The pressing base (3200) is located directly below the inlet joint (3300). A detection tube (3400) is fixedly installed inside the pressing base (3200). A pressure sensor (3900) and a pressure display meter (3500) are fixedly installed on the surface of the detection tube (3400) extending outside the pressing base (3200). An air inlet pipe (3800) is fixedly installed inside the inlet joint (3300); A top plate (4000), and the top plate (4000) has a circular structure; A clamping mechanism (5000); A PLC controller (7000); Among them, the four support rods (2000) are fixedly connected to the periphery of the top of the bottom plate (1000). The top plate (4000) is fixedly connected to the tops of the four support rods (2000). The testing mechanism (3000) is fixedly installed inside the support rods (2000). The PLC controller (7000) is fixedly installed on the surface of one of the support rods (2000); Among them, there is an electrical connection between the PLC controller (7000) and the pressure sensor (3900); A partition plate (6000); Among them, the partition plate (6000) is fixedly installed on the inner surface of the support rods (2000); The clamping mechanism (5000) includes a motor (5100). The power output end of the motor (5100) penetrates through the top plate (4000) and is fixedly connected to a threaded lead screw (5300). A sliding nut (5400) is slidably installed outside the threaded lead screw (5300). A moving plate (5200) is fixedly installed on the outer wall surface of the sliding nut (5400); Among them, the motor (5100) is fixedly installed on the top surface of the top plate (4000) through bolts. The bottom end of the threaded lead screw (5300) is rotatably connected to the partition plate (6000) through a bearing seat. There is an electrical connection between the PLC controller (7000) and the motor (5100).

2. The airtightness test device for a PE valve according to claim 1, wherein, It further includes: A buffer mechanism (3310). The buffer mechanism (3310) includes a sleeve (3311) and a buffer rod (3312). The buffer rod (3312) is slidably installed inside the sleeve (3311). A spring (3314) is fixedly installed at the bottom end inside the sleeve (3311). The bottom end of the buffer rod (3312) extends into the sleeve (3311) and is fixedly connected to a piston (3313). The piston (3313) is slidably connected to the sleeve (3311); Among them, there is a fixed connection between the bottom end of the sleeve (3311) and the top end of the inlet joint (3300). There is a fixed connection between the top end of the buffer rod (3312) and the bottom end of the moving plate (5200).

3. The airtightness test device for a PE valve according to claim 1, characterized in that: The test mechanism (3000) further includes an air pump (3100), and an air delivery branch pipe (3110) is fixedly connected to the air delivery end of the air pump (3100); Among them, the air pump (3100) is fixedly installed on the top surface of the top plate (4000), and an electrical connection is provided between the PLC controller (7000) and the air pump (3100).

4. A PE valve airtightness test device according to claim 1, characterized in that: It further includes: An alarm (2100), and the alarm (2100) is fixedly installed on the surface of one of the support rods (2000); Among them, an electrical connection is provided between the alarm (2100) and the PLC controller (7000).

5. The airtightness test device for a PE valve according to claim 1, characterized in that: A first sealing ring (3600) is embedded on the upper surface of the pressing base (3200), and a second sealing ring (3700) is embedded on the bottom surface of the inlet joint (3300).

6. The airtightness test device for a PE valve according to claim 1, characterized in that: The top end of the test tube (3400) extends to the upper surface of the pressing base (3200), the bottom end of the test tube (3400) penetrates through the pressing base (3200) and is fixedly connected to the surface of the bottom plate (1000), the bottom end of the air inlet pipe (3800) extends to the bottom surface of the inlet joint (3300), and the top end of the air inlet pipe (3800) penetrates through the inlet joint (3300) and is fixedly connected to the air delivery branch pipe (3110).

7. The airtightness test device for a PE valve according to claim 3, characterized in that: The air delivery branch pipe (3110) is specifically an elastic corrugated pipe.

8. A PE valve airtightness test device according to claim 1, characterized in that: The end faces of the pressing base (3200) and the inlet joint (3300) are both conical structures.

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