Pressure resistance detection tool for formed water meter shell

Abstract

The invention relates to the technical field of test detection equipment, in particular to a pressure resistance detection tool for a formed water meter shell, which comprises a sealing box, a meter shell and side pipes symmetrically arranged on two sides of the meter shell are arranged in the sealing box through a clamping assembly, the side pipes on two sides of the meter shell extend out of the sealing box, and a rubber plug is arranged on the side pipe on one side of the meter shell. A detachable glass window is arranged on the front side of the sealing box, a water supply assembly is connected to the top of the sealing box through a water outlet pipe, a sewage tank is arranged on the side, away from the pressurizing assembly, of the sealing box through a water outlet pipe, and a water outlet faucet is arranged on the sewage tank. A refrigerating assembly is arranged below the bottom plate, an inner cavity is formed in the rear side of the sealing box, and a heating assembly is arranged in the inner cavity. According to the invention, pressurization and temperature regulation and control are combined, high-precision pressure resistance detection is realized, a closed-loop water circulation design and an intelligent monitoring system are adopted, the detection efficiency is improved, and the requirements of environmental protection, energy conservation and safe production are met at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of test and detection equipment, in particular to a post-molding pressure resistance detection tool for a water meter case. Background Art

[0002] A water meter is an instrument for measuring water flow, mostly measuring the cumulative flow of water. The internal structure of a traditional water meter can be divided into three parts from the outside to the inside: the water meter case, the sleeve, and the inner core. Different types of water meters also determine the differences in the water meter case. The water meter case is an important structural component, among which the pressure test of the case is an important test item in water meter inspection. The existing pressure test often uses water pipes connected to both ends of the case to apply pressure, simulating actual water use scenarios, and verifying the flow measurement accuracy and pressure tolerance of the case under dynamic conditions.

[0003] However, the existing technology uses fluid media for direct testing, which has a significant water resource consumption problem. Water cannot be recycled during the test process, resulting in serious resource waste. At the same time, since the physical properties of the case are greatly affected by temperature, the detection system is temperature sensitive. Temperature changes will directly affect the medium viscosity and seal performance, thereby affecting the pressure test accuracy. These technical limitations affect the test results, and there is an urgent need to develop new detection solutions to improve test efficiency and accuracy. Summary of the Invention

[0004] The purpose of the present invention is to provide a pressure test tool for a water meter case after molding, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A tool for pressure resistance testing of a water meter case after molding, comprising a sealing box, wherein a case and side tubes symmetrically arranged on both sides of the case are arranged in the sealing box through a clamping assembly, the side tubes on both sides of the case extending out of the sealing box, wherein the side tube on one side of the case is provided with a rubber plug, and the side tube on the other side of the case is provided with a pressurizing assembly, a removable glass window is provided on the front side of the sealing box, a water supply assembly is connected to the top of the sealing box through a water outlet pipe, a sewage tank is provided on the side of the sealing box away from the pressurizing assembly through the water outlet pipe, and a water outlet faucet is provided on the sewage tank, a bottom plate is provided below the clamping assembly, a refrigeration assembly is provided below the bottom plate, an inner cavity is provided on the rear side of the sealing box, and a heating assembly is provided inside the inner cavity.

[0007] As a further preferred embodiment of the present invention: the refrigeration assembly includes a refrigeration coil, a refrigeration switch and a compressor, the refrigeration coil is arranged under the base plate, the refrigeration switch is arranged on the front side of the refrigeration coil, and the compressor is arranged on the outside of the sealed box, and the refrigeration coil, the compressor and the refrigeration switch are electrically connected.

[0008] As a further preferred embodiment of the present invention: the heating component includes a heating rod and a heating switch, the heating rod is arranged inside the inner cavity and a plurality of heating rods are provided, the heating switch is arranged below the inner cavity and the heating switch is electrically connected to the heating rod.

[0009] As a further preferred solution of the present invention: a temperature sensor and an industrial camera are provided on the inner wall of the sealed box, an exhaust port is provided on the top of the sealed box, and a rubber plug is provided on the exhaust port.

[0010] As a further preferred solution of the present invention: a bearing plate is provided on one side of the sealing box, a controller is provided above the bearing plate, and a sealing layer is provided at the position where the side tube passes through the sealing box.

[0011] As a further preferred embodiment of the present invention: the clamping assembly includes a bearing seat, a tightening screw, a clamping platform and an upper clamping sleeve, the bearing seat is arranged above the base plate, the watch case is arranged in the bearing seat, the tightening screw is arranged on the bearing seat, and the watch case in the bearing seat is stabilized by the tightening screw, the clamping platform is symmetrically arranged above the base plate, the side tube is arranged above the clamping platform, and the upper clamping sleeve is fastened to the top of the clamping platform by bolts to further limit the position of the side tube.

[0012] As a further preferred embodiment of the present invention: the pressurizing assembly includes an air pump, a main air pipe, a first branch air pipe, a second branch air pipe and a pressure gauge, the air pump is arranged above the supporting plate, the main air pipe is arranged on the output end of the air pump, the first branch air pipe and the second branch air pipe are both arranged on the end of the main air pipe away from the air pump, the pressure gauge is arranged on the first branch air pipe and the second branch air pipe, the end of the first branch air pipe away from the main air pipe is connected to the side pipe, and the end of the second branch air pipe away from the main air pipe extends into the sealed box.

[0013] As a further preferred solution of the present invention: a concave layer is provided on the front side of the sealed box, an opening is provided on the side of the sealed box, and the glass window is connected to the concave layer by plugging and unplugging through the opening.

[0014] As a further preferred embodiment of the present invention: the water supply assembly includes a fixed seat, a water carrying tank, a water inlet and a water outlet pipe, the fixed seat is arranged above the sealed box, the water carrying tank is arranged on the fixed seat, the water inlet is arranged above the water carrying tank, the water outlet pipe is arranged on one side of the water carrying tank, and the water carrying tank is connected to the inside of the sealed box through the water outlet pipe.

[0015] As a further preferred solution of the present invention: a flow sensor is provided on the water outlet pipe, and solenoid valves are provided on the water outlet pipe and the water outlet faucet. A holder is provided below one end of the side pipe adjacent to the rubber plug, and a clamp is provided above the holder. The clamp cooperates with the holder to stabilize the rubber plug on the side pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention realizes the recycling and reuse of test water through the closed-loop design of the sealing box, water carrying tank and sewage tank, which solves the problem of water resource waste in traditional testing. In addition, the test accuracy is improved through controllable temperature. The synergistic effect of the refrigeration component and the heating component, combined with the temperature sensor, can dynamically adjust the water temperature in the sealing box to eliminate performance differences caused by temperature fluctuations. In addition, the pressurizing component and the rubber plug are used to realize the sealing and air filling of the watch case. The pressure in the watch case is accurately controlled by continuous inflation. With the static water introduced, the watch case is observed to see if it bubbles, so as to detect whether the watch case is damaged. The watch case detection status can be conveniently observed through the visual glass window. This tooling not only solves the problems of water resource waste and temperature sensitivity in traditional testing, but also significantly improves the quality detection accuracy and reliability of the water meter case through the combination of composite pressure and water area. It is suitable for pressure resistance performance verification under different climatic conditions, which brings great convenience in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural front view of a pressure test tool with a glass window after the water meter case is formed according to the present invention;

[0019] Figure 2 This is a right side perspective view of a pressure test tool for a water meter case after molding according to the present invention;

[0020] Figure 3 This is a left side stereoscopic diagram of a pressure test tool for a water meter case after molding according to the present invention;

[0021] Figure 4 This is a rear perspective view of a pressure testing tool for a water meter case after molding according to the present invention;

[0022] Figure 5 Schematic diagram of the structure inside the inner cavity of the present invention;

[0023] Figure 6 This is a schematic diagram of the installation structure of the refrigeration coil of the present invention;

[0024] Figure 7 Schematic diagram of the structure of the glass window.

[0025] In the figure: 1. sealing box, 2. bottom plate, 3. bearing seat, 4. clamping table, 5. tightening screw, 6. upper ferrule, 7. case, 8. refrigeration switch, 9. compressor, 10. air pump, 11. first branch air pipe, 12. second branch air pipe, 13. fixing seat, 14. water tank, 15. water inlet, 16. water outlet pipe, 17. glass window, 18. sewage tank, 19. water tap, 20. temperature sensor, 21. industrial camera, 22. exhaust port, 23. side pipe, 24. main air pipe, 25. concave layer, 26. bearing plate, 27. flow sensor, 28. sealing layer, 29. open mouth, 30. rubber plug, 31. holder, 32. clamp, 33. controller, 34. pressure gauge, 35. refrigeration coil, 36. inner cavity, 37. heating rod, 38. solenoid valve, 39. heating switch. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0027] Example 1

[0028] See also Figure 1-7The present embodiment provides a post-molding pressure test tool for a water meter case 7, comprising a sealed box 1, wherein a case 7 and side tubes 23 symmetrically arranged on both sides of the case 7 are provided in the sealed box 1 through a clamping assembly, and the side tubes 23 on both sides of the case 7 extend out of the sealed box 1, wherein the side tube 23 on one side of the case 7 is provided with a rubber plug 30, and the side tube 23 on the other side of the case 7 is provided with a pressurizing assembly, and a detachable glass window 17 is provided on the front side of the sealed box 1, and the glass window 17 is transparent glass. The top of the sealed box 1 is connected to a water supply assembly through a water outlet pipe 16, and the side of the sealed box 1 away from the pressurizing assembly is connected through an outlet pipe 16. The water pipe 16 is provided with a sewage tank 18, and a water tap 19 is provided on the sewage tank 18. A base plate 2 is provided under the clamping assembly, and a refrigeration assembly is provided under the base plate 2. An inner cavity 36 is provided on the rear side of the sealed box 1, and a heating assembly is provided inside the inner cavity 36. A temperature sensor 20 and an industrial camera 21 are provided on the inner wall of the sealed box 1. An exhaust port 22 is provided on the top of the sealed box 1, and a rubber plug 30 is provided on the exhaust port 22. A supporting plate 26 is provided on one side of the sealed box 1, and a controller 33 is provided above the supporting plate 26. The side pipe 23 is provided with a sealing layer 28 at the place where the sealed box 1 is passed through. The pressurizing assembly includes an air pump 10, a main air pipe 24, a first branch air pipe 11, a second branch air pipe 12 and a pressure gauge 34. The air pump 10 is arranged above the supporting plate 26, the main air pipe 24 is arranged on the output end of the air pump 10, the first branch air pipe 11 and the second branch air pipe 12 are both arranged on the end of the main air pipe 24 away from the air pump 10, the pressure gauge 34 is arranged on the first branch air pipe 11 and the second branch air pipe 12, the end of the first branch air pipe 11 away from the main air pipe 24 is connected to the side pipe 23, and the end of the second branch air pipe 12 away from the main air pipe 24 extends into the sealed box 1. The water supply assembly includes a fixing seat 13, a water tank 14, a water inlet 15 and a water outlet pipe 16. The fixing seat 13 is arranged above the sealed box 1, the water tank 14 is arranged on the fixing seat 13, the water inlet 15 is arranged above the water tank 14, the water outlet pipe 16 is arranged on one side of the water tank 14, and the water tank 14 is connected to the inside of the sealed box 1 through the water outlet pipe 16. The clamping assembly includes a bearing seat 3, a tightening screw 5, a clamping platform 4 and an upper ferrule 6. The bearing seat 3 is arranged above the base plate 2, the case 7 is arranged in the bearing seat 3, the tightening screw 5 is arranged on the bearing seat 3, and the case 7 in the bearing seat 3 is stabilized by the tightening screw 5. The clamping platform 4 is symmetrically arranged above the base plate 2, the side tube 23 is arranged above the clamping platform 4, and the upper ferrule 6 is fastened to the clamping platform 4 by bolts to further limit the position of the side tube 23.A concave layer 25 is provided on the front side of the sealing box 1, and an opening 29 is provided on the side of the sealing box 1. The glass window 17 is connected to the concave layer 25 through the opening 29. A flow sensor 27 is provided on the water outlet pipe 16, and a solenoid valve 38 is provided on the water outlet pipe 16 and the water outlet faucet 19. A holder 31 is provided below one end of the side pipe 23 adjacent to the rubber plug 30, and a clamp 32 is provided above the holder 31. The clamp 32 cooperates with the holder 31 to stabilize the rubber plug 30 on the side pipe 23.First, remove the glass window 17 on the front side of the sealing box 1, place the watch case 7 to be tested on the supporting seat 3, and place the side tubes 23 on both sides of the watch case 7 on the clamping platform 4. Then, screw in the tightening screws 5 with a tool, and then cover the clamping platform 4 with the ferrule 6. This design can just fix the object to be tested. Then insert the glass window 17 into the concave layer 25 from the opening 29, and then close the solenoid valves 38 of each water outlet pipe 16, plug one end of the side tube 23 with a rubber plug 30, and also plug the exhaust port 22 with a rubber plug 30. In addition, the sealing layer 28 plays a reinforcing sealing role on both sides of the side tube 23 extending out of the sealing box 1. The cooperation of the card holder 31 and the clamp 32 fixes the rubber plug 30 firmly on the side tube 23, so that the object to be tested also forms a sealing structure with one end connected to the air pump 10. Start the air pump 10, open the second branch air pipe 12, close the first branch air pipe 11, extend the second branch air pipe 12 into the sealing box 1, observe the changes in the pressure gauge 34, and use it to detect the sealing effect in the sealing box 1. When there is a leak somewhere, it can be sealed with sealant. When it is detected that the pressure rises to a certain amount and tends to be stable, open the exhaust port 22, release the gas, and then use the rubber plug 30 to block the exhaust port 22, and let water pass through the water inlet 15. After entering the water tank 14, open the solenoid valve 38 to let the water in the water tank 14 flow into the sealed box 1. When the water covers the object to be tested, start the air pump 10, close the second branch air pipe 12, open the first branch air pipe 11, and fill the gas into the object to be tested. Gradually fill it to form a certain pressure, detect whether there is bubbling in the object to be tested or observe the state of the object to be tested when the pressure gauge 34 is unstable. In addition, the state of the object to be tested can be observed in real time through the industrial camera 21, and the temperature sensor 20 can observe the temperature in the sealed box 1 in real time. The influence of water temperature on the object to be tested under different conditions can be accurately observed by adjusting the heating component and the cooling component. The testing process can be observed not only through the glass window 17 but also on the controller 33 through the industrial camera 21. After the test is completed, the solenoid valve 38 is opened to discharge the water in the sealed box 1 into the sewage tank 18 through the outlet pipe 16. When the next test is performed, the water tap 19 can be opened to store the water in the water tank 14 using tools, so as to realize the recycling of water flow and save resources. After the water is completely discharged, the rubber plug 30 of the exhaust port 22 is opened to allow the water vapor in the sealed box 1 to be discharged automatically, and the glass window 17 is pulled out. At this time, the front side of the sealed box 1 is in an open state, and the object to be tested can be removed from the clamping assembly and the object to be tested can be taken out.

[0029] By clamping the components to prevent loosening during testing, the airtightness of the sealing box 1 is first tested, and then water is injected to pressurize the case 7 to eliminate interference from leakage of the equipment itself, resulting in more accurate results. The water after the test is discharged into the sewage tank 18 and can be reused, which greatly reduces waste, is environmentally friendly and saves costs. The industrial camera 21 + temperature sensor 20 observes the status of the case 7 and the water temperature in real time. The refrigeration component and the heating component simulate different environments to improve the comprehensiveness of the test. The detachable glass window 17 facilitates quick assembly and disassembly of the case 7. The solenoid valve 38 and the controller 33 realize automatic control to reduce the risk of manual intervention.

[0030] To better perform pressure testing and temperature regulation on the DUT, a refrigeration assembly and a heating assembly are provided. The refrigeration assembly comprises a refrigeration coil 35, a refrigeration switch 8, and a compressor 9. The refrigeration coil 35 is located below the baseplate 2, the refrigeration switch 8 is located in front of the refrigeration coil 35, and the compressor 9 is located outside the sealed box 1. The refrigeration coil 35, compressor 9, and refrigeration switch 8 are electrically connected. When the refrigeration switch 8 is activated, the compressor 9 begins operating, driving the refrigerant circulation. The compressor 9 compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gas. The high-temperature refrigerant enters the refrigeration coil 35 below the baseplate 2, where it dissipates heat and condenses into a high-pressure liquid. After throttling through the expansion valve, the liquid refrigerant evaporates within the coil, absorbing heat and rapidly cooling the baseplate 2. The refrigeration coil 35 directly cools the baseplate 2, while metal heat conduction reduces the water temperature within the sealed box 1, simulating a low-temperature environment. A temperature sensor monitors the water temperature in real time and provides feedback to the controller 33 to adjust the operation of the compressor 9, achieving precise temperature control. In conjunction with the heating assembly, the temperature can be quickly switched between operating modes. The heating assembly includes a heating rod 37 and a heating switch 39. The heating rod 37 is arranged inside the inner cavity 36 and is provided in multiple numbers. The heating switch 39 is arranged below the inner cavity 36 and is electrically connected to the heating rod 37. By activating the heating switch 39, the heating rod 37 can be turned on, and then the heat is transferred to the sealed box 1 through heat conduction inside the inner cavity 36 to heat the water temperature and simulate the effect of water temperature on the case 7 in a high temperature environment. This water meter case 7 pressure test fixture achieves high-precision pressure test through a sealed structure and a segmented test process, combined with pressurization and temperature control. It adopts a closed-loop water circulation design and an intelligent monitoring system, which significantly improves water resource utilization while ensuring test accuracy. The overall structure improves test efficiency by more than 60% through rapid clamping, visual observation and automated control, while meeting environmental protection, energy saving and safe production requirements.

[0031] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and technical features of the present application. For those skilled in the art, solutions or features that belong to the prior art or common knowledge will not be described in detail in the above embodiments.

[0032] In addition, the technical solutions of the present application are not limited to the above-mentioned embodiments. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A post-molding pressure test tool for a water meter case, comprising a sealed box, wherein a case and side tubes symmetrically arranged on both sides of the case are arranged in the sealed box through a clamping assembly, characterized in that: The side tubes on both sides of the case extend out of the sealed box, wherein the side tube on one side of the case is provided with a rubber plug, and the side tube on the other side of the case is provided with a pressurizing component. A detachable glass window is provided on the front side of the sealed box, and the top of the sealed box is connected to the water supply component through an outlet pipe. A sewage tank is provided on the side of the sealed box away from the pressurizing component through the outlet pipe, and a water outlet faucet is provided on the sewage tank. A bottom plate is provided under the clamping component, and a refrigeration component is provided under the bottom plate. An inner cavity is provided on the rear side of the sealed box, and a heating component is provided inside the inner cavity.

2. A post-molding pressure test tool for a water meter case according to claim 1, characterized in that: The refrigeration assembly includes a refrigeration coil, a refrigeration switch and a compressor. The refrigeration coil is arranged below the base plate, the refrigeration switch is arranged on the front side of the refrigeration coil, and the compressor is arranged outside the sealed box. The refrigeration coil, the compressor and the refrigeration switch are electrically connected.

3. The post-molding pressure test tool for a water meter case according to claim 1, characterized in that: The heating component includes a heating rod and a heating switch. The heating rod is arranged inside the inner cavity and is provided in plurality. The heating switch is arranged below the inner cavity and is electrically connected to the heating rod.

4. The post-molding pressure testing tool for a water meter case according to claim 1, characterized in that: A temperature sensor and an industrial camera are arranged on the inner side wall of the sealed box, an exhaust port is arranged on the top of the sealed box, and a rubber plug is arranged on the exhaust port.

5. The post-molding pressure testing tool for a water meter case according to claim 4, characterized in that: A bearing plate is provided on one side of the sealing box, a controller is provided above the bearing plate, and a sealing layer is provided at a position where the side pipe passes through the sealing box.

6. The post-molding pressure testing tool for a water meter case according to claim 1, characterized in that: The clamping assembly includes a bearing seat, a tightening screw, a clamping platform and an upper clamping sleeve. The bearing seat is arranged above the base plate, the watch case is arranged in the bearing seat, the tightening screw is arranged on the bearing seat, and the watch case in the bearing seat is stabilized by the tightening screw. The clamping platform is symmetrically arranged above the base plate, the side tube is arranged above the clamping platform, and the upper clamping sleeve is fastened to the top of the clamping platform by bolts to further limit the position of the side tube.

7. The post-molding pressure testing tool for a water meter case according to claim 5, characterized in that: The pressurizing assembly includes an air pump, a main air pipe, a first branch air pipe, a second branch air pipe and a pressure gauge. The air pump is arranged above the supporting plate, the main air pipe is arranged on the output end of the air pump, the first branch air pipe and the second branch air pipe are both arranged on the end of the main air pipe away from the air pump, the pressure gauge is arranged on the first branch air pipe and the second branch air pipe, the end of the first branch air pipe away from the main air pipe is connected to the side pipe, and the end of the second branch air pipe away from the main air pipe extends into the sealed box.

8. The post-molding pressure testing tool for a water meter case according to claim 1, characterized in that: The front side of the sealed box is provided with a concave layer, and the side of the sealed box is provided with an opening, and the glass window is connected to the concave layer by plugging and unplugging through the opening.

9. The post-molding pressure testing tool for a water meter case according to claim 1, characterized in that: The water supply assembly includes a fixed seat, a water carrying tank, a water inlet and a water outlet pipe. The fixed seat is arranged above the sealed box, the water carrying tank is arranged on the fixed seat, the water inlet is arranged above the water carrying tank, the water outlet pipe is arranged on one side of the water carrying tank, and the water carrying tank is connected to the inside of the sealed box through the water outlet pipe.

10. The post-molding pressure testing tool for a water meter case according to claim 2, characterized in that: A flow sensor is provided on the water outlet pipe, and solenoid valves are provided on the water outlet pipe and the water outlet faucet. A holder is provided below one end of the side pipe adjacent to the rubber plug, and a clamp is provided above the holder. The clamp cooperates with the holder to stabilize the rubber plug on the side pipe.

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