Airtight pressurizing device for water meter housing

Abstract

The utility model relates to the technical field of sealing detection, particularly relate to a water meter casing airtightness pressure charging device, it not only can carry out airtightness detection to water meter casing, still can position the leakage position on water meter casing, has facilitated the later overhaul and maintenance, convenient to use, and practicality is high, including support and box, the box fixed mounting is in the support upper end, is provided with the chamber in the box, still including perforated plate, mould, sealing mechanism, inflation mechanism and water injection mechanism, the perforated plate fixed mounting is in the chamber of box, is provided with a plurality of upper and lower communication orifice plate on the perforated plate, the mould fixed mounting is on the perforated plate upper end, is provided with positioning groove on the mould, sealing mechanism has the function of sealing, inflation mechanism has the function of inflation, the output of water injection mechanism and the chamber communication of box, water injection mechanism has the function of water injection.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing detection, and in particular to a water meter housing airtightness pressurization device. Background Technology

[0002] The water meter housing airtightness pressurization device is a specialized testing equipment used to test whether the water meter housing (i.e., the outer shell or main structure of the water meter) has sufficient airtightness. Its main purpose is to verify whether the housing has leaks, cracks, or other sealing problems before the water meter is manufactured, assembled, or shipped. (See attached instruction manual.) Figure 6 The existing water meter casing is mainly composed of a shell, with an opening at the top and an inlet and outlet at the left and right ends of the shell, respectively.

[0003] Currently, water meter casing sealing tests typically rely on airtightness testing. This involves sealing the opening at the top and the inlet at the left end of the casing, then injecting pressurized gas into the casing through the drain outlet. This pressure is maintained for a period, and the casing's sealing performance is inferred by observing whether the gas pressure inside the casing decreases. However, the airtightness testing devices in this existing technology can only determine whether the casing's sealing is up to standard; they cannot pinpoint the source of any leaks. This makes subsequent inspection and maintenance of leaking casings inconvenient and hinders their use. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a water meter housing airtightness pressurization device that can not only detect the airtightness of the water meter housing, but also locate the leakage location on the water meter housing, which facilitates subsequent inspection and maintenance, and is easy to use and highly practical.

[0005] This utility model relates to a water meter housing airtightness pressurization device, comprising a bracket and a housing. The housing is fixedly installed on the upper end of the bracket, and a chamber is provided inside the housing. It also includes a perforated plate, a mold, a sealing mechanism, an inflation mechanism, and a water injection mechanism. The perforated plate is fixedly installed inside the chamber of the housing and has multiple interconnected perforations. The mold is fixedly installed on the upper end of the perforated plate and has a positioning groove. The sealing mechanism has a sealing function, the inflation mechanism has an inflation function, and the output end of the water injection mechanism is connected to the chamber of the housing, thus injecting water. The positioning groove on the mold is adapted to the shape of the lower end of the water meter housing. When performing a seal test on the water meter housing, the water meter housing is placed in the positioning groove of the mold, and then the sealing mechanism seals the opening at the upper end of the water meter housing. The water inlet on the left side of the water meter casing is sealed, and then connected to the drain outlet on the right side of the casing via an air inflation mechanism. Gas at a certain pressure is then injected into the casing through the inflation mechanism and maintained for a period of time. The sealing performance of the water meter casing can be inferred by observing the pressure gauge on the inflation mechanism. If the sealing performance is found to be substandard, water is injected into the chamber of the casing via a water injection mechanism, submerging the water meter casing below the liquid surface. The gas in the casing will escape through the leak point, resulting in bubbles at the leak location, thus pinpointing the leak. This system not only tests the airtightness of the water meter casing but also locates the leak, facilitating subsequent inspection and maintenance. It is convenient to use and highly practical.

[0006] Preferably, the sealing mechanism includes a sealing cover, a sealing plug, a lifting mechanism, and a left-right moving mechanism. The sealing cover is mounted on the lifting mechanism, and the sealing plug is mounted on the left-right moving mechanism. The lifting mechanism is used to lift the sealing cover, and the left-right moving mechanism is used to move the sealing plug left and right. When performing an airtightness test on the water meter casing, the water meter casing is placed in the positioning groove of the mold. Then, the sealing cover is lowered by the lifting mechanism until it contacts the opening at the top of the water meter casing, sealing the opening at the top of the water meter casing. Then, the sealing plug is moved to the right by the left-right moving mechanism until it contacts the water inlet at the left end of the water meter casing, sealing the water inlet at the left end of the water meter casing. Finally, the air inlet is connected to the drain outlet at the right end of the water meter casing via an inflation mechanism, facilitating the sealing of the water meter casing.

[0007] Preferably, the lifting mechanism includes a hoisting frame, a hydraulic cylinder, a lifting rod, a sliding rod, and a lifting plate. The hydraulic cylinder is fixedly installed on the upper end of the hoisting frame. The lifting rod and the sliding rod are both slidably installed on the hoisting frame. The power output end of the hydraulic cylinder is connected to the upper end of the lifting rod. The lifting plate is fixedly installed on the lower ends of the sliding rod and the lifting rod. The sealing cover is fixedly installed on the lower end of the lifting plate. The hoisting frame is installed on a support frame in the workshop. When lifting the sealing cover, the hydraulic cylinder is opened, and the hydraulic cylinder drives the lifting plate to lift the sealing cover through the lifting rod. This facilitates sealing the opening at the upper end of the water meter casing.

[0008] Preferably, the left and right moving mechanism includes a support plate, a servo cylinder, and a push rod. The servo cylinder is fixedly mounted on the support plate, which is mounted on the left end of the housing. The power output end of the servo cylinder is provided with a push rod, which is slidably mounted on the housing. The sealing plug is fixedly mounted on the right end of the push rod. When sealing the water inlet at the left end of the water meter housing, the servo cylinder is opened, causing the push rod to move the sealing plug to the right, thereby moving the sealing plug to the right until it contacts the water inlet at the left end of the water meter housing, thus sealing the water inlet at the left end of the water meter housing.

[0009] Preferably, the inflation mechanism includes an air tank, an air pump, an exhaust pipe, an air delivery hose, a pressure gauge, and a valve. The input end of the air pump is connected to the air tank, and the output end of the air pump is connected to the air delivery hose through the exhaust pipe. The output end of the air delivery hose is equipped with a connector. The pressure gauge is installed on the exhaust pipe, and the valve is installed at the lower end of the exhaust pipe, located below the pressure gauge. After sealing the opening at the upper end and the water inlet at the left end of the water meter casing with a sealing cap and a sealing plug, the output end of the air delivery hose is sealed and connected to the drain outlet at the right end of the water meter casing through the connector. Then, the air pump is turned on, allowing the gas in the air tank to enter the water meter casing through the exhaust pipe and the air delivery hose. The pressure value on the pressure gauge is observed until the air pressure in the water meter casing reaches the specified value. Then, the valve is closed, and the pressure is maintained for a period of time. The air pressure value change range on the pressure gauge is observed to determine the sealing performance of the water meter casing. If the water meter casing is not sealed well, water is injected into the tank so that the water meter casing is below the liquid surface. The location of the leak is inferred by observing the position of the air bubbles on the water meter casing.

[0010] Preferably, the water injection mechanism includes a water tank, a water pump, and a water delivery pipe. The water tank has a water chamber, and the water meter housing is located below the tank body. A drain pipe communicating with the water chamber is located at the bottom of the tank body, above the water tank. A solenoid valve is installed on the drain pipe. The input end of the water pump is connected to the water tank, and the output end of the water pump is connected to the water delivery pipe. The output end of the water delivery pipe is located within the chamber of the tank body. When a leak is detected in the water meter housing during airtightness testing, the water pump is turned on, allowing water from the water tank to flow sequentially into the tank body through the pump and the water delivery pipe, immersing the water meter housing in the water. The location of the leak is determined by observing the position of air bubbles on the water meter housing. Once determined, the valve on the drain pipe at the bottom of the tank body is opened, allowing water from the tank body to fall into the water tank through the drain pipe, placing the water meter housing above the liquid surface. The water meter housing is then removed, and the process is repeated for the next water meter housing.

[0011] Preferably, a transparent observation window is provided on the upper part of the housing; the transparent observation window can be made of transparent plastic or glass; the above-mentioned arrangement facilitates the observation of the airtightness of the water meter casing.

[0012] Compared with the prior art, the advantages of this utility model are: it can not only detect the air tightness of the water meter casing, but also locate the leakage location on the water meter casing, which facilitates the later inspection and maintenance, and is easy to use and highly practical. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the first isometric structure of this utility model; Figure 3 This is a schematic diagram of the second isometric structure of this utility model; Figure 4 It is a structural diagram of the sealing mechanism, the inflation mechanism, and the perforated plate, etc. Figure 5 This is a schematic diagram of the water injection mechanism; Figure 6 This is a schematic diagram of the water meter casing.

[0014] The following are labeled in the attached diagram: 1. Bracket; 2. Box body; 3. Perforated plate; 4. Mold; 5. Sealing cover; 6. Sealing plug; 7. Lifting frame; 8. Hydraulic cylinder; 9. Lifting rod; 10. Sliding rod; 11. Lifting plate; 12. Support plate; 13. Servo electric cylinder; 14. Push rod; 15. Air tank; 16. Air pump; 17. Exhaust pipe; 18. Air supply hose; 19. Pressure gauge; 20. Valve; 21. Water tank; 22. Water pump; 23. Water supply pipe; 24. Water meter housing. Detailed Implementation

[0015] To facilitate understanding of this invention, a more complete description will be provided below with reference to the accompanying drawings. This invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this invention more thorough and complete.

[0016] Example 1 like Figures 1 to 6The water meter housing airtightness pressurization device of this utility model includes a bracket 1 and a housing 2. The housing 2 is fixedly installed on the upper end of the bracket 1, and a chamber is provided inside the housing 2. It also includes a perforated plate 3, a mold 4, a sealing mechanism, an inflation mechanism, and a water injection mechanism. The perforated plate 3 is fixedly installed inside the chamber of the housing 2 and has multiple perforations that are connected vertically. The mold 4 is fixedly installed on the upper end of the perforated plate 3 and has a positioning groove. The sealing mechanism has a sealing function, the inflation mechanism has an inflation function, and the output end of the water injection mechanism is connected to the chamber of the housing 2, and the water injection mechanism has a water injection function. The positioning groove on the mold 4 is adapted to the shape of the lower end of the water meter housing 24. When performing a seal test on the water meter housing 24, the water meter housing 24 is placed in the positioning groove of the mold 4, and then the sealing mechanism seals the opening at the upper end of the water meter housing 24. The water inlet on the left side of the water meter casing 24 is sealed. Then, an air-filling mechanism connects it to the drain outlet on the right side of the water meter casing 24. Gas at a certain pressure is then injected into the water meter casing 24 through the air-filling mechanism and maintained at that pressure for a period of time. The sealing performance of the water meter casing 24 can be inferred by observing the change in pressure gauge on the air-filling mechanism. If the sealing performance of the water meter casing 24 is found to be submerged, water is injected into the chamber of the housing 2 through the water-injection mechanism, submerging the water meter casing 24 below the liquid surface. The gas in the water meter casing 24 will escape through the leak point on the water meter casing 24, resulting in air bubbles at the leak point, thus identifying the leak location. This method not only tests the airtightness of the water meter casing 24 but also locates the leak point, facilitating subsequent inspection and maintenance. It is convenient to use and highly practical.

[0017] like Figure 1 and Figure 4 The sealing mechanism includes a sealing cover 5, a sealing plug 6, a lifting mechanism, and a left-right moving mechanism. The sealing cover 5 is mounted on the lifting mechanism, and the sealing plug 6 is mounted on the left-right moving mechanism. The lifting mechanism is used to lift the sealing cover 5, and the left-right moving mechanism is used to move the sealing plug 6 left and right. When performing an airtightness test on the water meter housing 24, the water meter housing 24 is placed in the positioning groove of the mold 4. Then, the sealing cover 5 is lowered by the lifting mechanism until it contacts the opening at the upper end of the water meter housing 24, sealing the opening at the upper end of the water meter housing 24. Then, the sealing plug 6 is moved to the right by the left-right moving mechanism until it contacts the water inlet at the left end of the water meter housing 24, sealing the water inlet at the left end of the water meter housing 24. Finally, the air inlet is connected to the drain outlet at the right end of the water meter housing 24 by the air inflation mechanism, which facilitates the sealing of the water meter housing 24.

[0018] like Figure 1 and Figure 4The lifting mechanism includes a hoisting frame 7, a hydraulic cylinder 8, a lifting rod 9, a sliding rod 10, and a lifting plate 11. The hydraulic cylinder 8 is fixedly installed on the upper end of the hoisting frame 7. The lifting rod 9 and the sliding rod 10 are both slidably installed on the hoisting frame 7. The power output end of the hydraulic cylinder 8 is connected to the upper end of the lifting rod 9. The lifting plate 11 is fixedly installed on the lower end of the sliding rod 10 and the lifting rod 9. The sealing cover 5 is fixedly installed on the lower end of the lifting plate 11. The hoisting frame 7 is installed on the support frame of the workshop. When lifting the sealing cover 5, the hydraulic cylinder 8 is opened, and the hydraulic cylinder 8 drives the lifting plate 11 to lift the sealing cover 5 through the lifting rod 9. This facilitates the sealing of the upper opening of the water meter casing 24.

[0019] The left and right moving mechanism includes a support plate 12, a servo cylinder 13, and a push rod 14. The servo cylinder 13 is fixedly installed on the support plate 12, which is installed on the left end of the housing 2. The power output end of the servo cylinder 13 is provided with a push rod 14, which is slidably installed on the housing 2. The sealing plug 6 is fixedly installed on the right end of the push rod 14. When sealing the water inlet at the left end of the water meter housing 24, the servo cylinder 13 is opened, causing the push rod 14 to move the sealing plug 6 to the right, thereby moving the sealing plug 6 to the right until it contacts the water inlet at the left end of the water meter housing 24, thus sealing the water inlet at the left end of the water meter housing 24.

[0020] like Figure 4 The inflation mechanism includes an air tank 15, an air pump 16, an exhaust pipe 17, an air delivery hose 18, a pressure gauge 19, and a valve 20. The input end of the air pump 16 is connected to the air tank 15, and the output end of the air pump 16 is connected to the air delivery hose 18 through the exhaust pipe 17. The output end of the air delivery hose 18 is equipped with a connector. The pressure gauge 19 is installed on the exhaust pipe 17, and the valve 20 is installed at the lower end of the exhaust pipe 17, located below the pressure gauge 19. After sealing the opening at the upper end and the water inlet at the left end of the water meter casing 24 with the sealing cover 5 and the sealing plug 6, the output end of the air delivery hose 18 is connected to the water meter casing through the connector. The drain outlet on the right end of 24 is sealed. Then, the air pump 16 is turned on, allowing the gas in the air tank 15 to enter the water meter housing 24 through the exhaust pipe 17 and the air supply hose 18. The pressure value on the pressure gauge 19 is observed until the air pressure in the water meter housing 24 reaches the specified value. Then, the valve 20 is closed, and the pressure is maintained for a period of time. The air pressure value on the pressure gauge 19 is observed to determine whether the water meter housing 24 is sealed. If the water meter housing 24 is not sealed, water is injected into the tank 2 so that the water meter housing 24 is below the liquid surface. The location of the leak is inferred by observing the position of the air bubbles on the water meter housing 24.

[0021] like Figure 1 and Figure 5The water injection mechanism includes a water tank 21, a water pump 22, and a water delivery pipe 23. The water tank 21 has a water chamber. The water meter housing 24 is located below the tank body 2. A drain pipe communicating with the water chamber is located at the lower part of the tank body 2, above the water tank 21. A solenoid valve is installed on the drain pipe. The input end of the water pump 22 is connected to the water tank 21, and the output end of the water pump 22 is connected to the water delivery pipe 23. The output end of the water delivery pipe 23 is located within the chamber of the tank body 2. When a leak is detected in the water meter housing 24 during an airtightness test, the valve will activate. Turn on the water pump 22 to allow water from the water tank 21 to flow into the tank 2 through the water pump 22 and the water pipe 23, so that the water meter casing 24 is submerged in the water. The location of the leak in the water meter casing 24 is determined by observing the position of the air bubbles on the water meter casing 24. Once the location is determined, open the valve on the drain pipe at the bottom of the tank 2 to allow water in the tank 2 to fall into the water tank 21 through the drain pipe, so that the water meter casing 24 is above the liquid surface. Then remove the water meter casing 24 and test the next water meter casing 24 in the same way.

[0022] Example 2 Based on Example 1, a transparent observation window is provided on the upper part of the housing 2; the material of the transparent observation window can be transparent plastic or glass; through the above setting, it is convenient to observe the airtightness detection of the water meter housing 24.

[0023] It should be noted that the electrical equipment in this case, such as solenoid valves, servo cylinders 13, air pumps 16 and water pumps 22, are all connected to an external controller, which coordinates and controls the operation of each electrical device.

[0024] The hydraulic cylinder 8, servo electric cylinder 13, air pump 16, air pressure gauge 19, and water pump 22 of the water meter housing airtightness pressurization device of this utility model are all purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A water meter housing airtight pressurization device, comprising a bracket (1) and a housing (2), wherein the housing (2) is fixedly installed on the upper end of the bracket (1), and a chamber is provided inside the housing (2); characterized in that, It also includes a perforated plate (3), a mold (4), a sealing mechanism, an inflation mechanism, and a water injection mechanism. The perforated plate (3) is fixedly installed in the cavity of the box (2). The perforated plate (3) is provided with multiple perforated plates that are connected vertically. The mold (4) is fixedly installed on the upper end of the perforated plate (3). The mold (4) is provided with a positioning groove. The sealing mechanism has a sealing function. The inflation mechanism has an inflation function. The output end of the water injection mechanism is connected to the cavity of the box (2). The water injection mechanism has a water injection function.

2. The water meter housing airtightness pressurization device as described in claim 1, characterized in that, The sealing mechanism includes a sealing cover (5), a sealing plug (6), a lifting mechanism, and a left and right moving mechanism. The sealing cover (5) is installed on the lifting mechanism, and the sealing plug (6) is installed on the left and right moving mechanism. The lifting mechanism is used to lift the sealing cover (5), and the left and right moving mechanism is used to move the sealing plug (6) left and right.

3. The water meter housing airtightness pressurization device as described in claim 2, characterized in that, The lifting mechanism includes a hoisting frame (7), a hydraulic cylinder (8), a lifting rod (9), a sliding rod (10), and a lifting plate (11). The hydraulic cylinder (8) is fixedly installed on the upper end of the hoisting frame (7). The lifting rod (9) and the sliding rod (10) are both slidably installed on the hoisting frame (7). The power output end of the hydraulic cylinder (8) is connected to the upper end of the lifting rod (9). The lifting plate (11) is fixedly installed on the lower end of the sliding rod (10) and the lifting rod (9). The sealing cover (5) is fixedly installed on the lower end of the lifting plate (11).

4. The water meter housing airtightness pressurization device as described in claim 2, characterized in that, The left and right moving mechanism includes a support plate (12), a servo cylinder (13) and a push rod (14). The servo cylinder (13) is fixedly installed on the support plate (12), which is installed on the left end of the housing (2). The power output end of the servo cylinder (13) is provided with a push rod (14). The push rod (14) is slidably installed on the housing (2) to the left and right. The sealing plug (6) is fixedly installed on the right end of the push rod (14).

5. The water meter housing airtightness pressurization device as described in claim 1, characterized in that, The inflation mechanism includes an air tank (15), an air pump (16), an exhaust pipe (17), an air delivery hose (18), a pressure gauge (19), and a valve (20). The input end of the air pump (16) is connected to the air tank (15), and the output end of the air pump (16) is connected to the air delivery hose (18) through the exhaust pipe (17). The output end of the air delivery hose (18) is provided with a connector. The pressure gauge (19) is installed on the exhaust pipe (17), and the valve (20) is installed at the lower end of the exhaust pipe (17). The valve (20) is located below the pressure gauge (19).

6. The water meter housing airtightness pressurization device as described in claim 1, characterized in that, The water injection mechanism includes a water tank (21), a water pump (22), and a water delivery pipe (23). The water tank (21) has a water chamber inside. The water meter shell (24) is located below the box body (2). The lower part of the box body (2) is provided with a drain pipe that communicates with the drain chamber. The drain pipe is located above the water tank (21). A solenoid valve is provided on the drain pipe. The input end of the water pump (22) is connected to the water tank (21). The output end of the water pump (22) is connected to the water delivery pipe (23). The output end of the water delivery pipe (23) is located in the chamber of the box body (2).

7. The water meter housing airtightness pressurization device as described in claim 1, characterized in that, A transparent observation window is provided on the upper part of the box (2).

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