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CN-122016192-A - Inner leakage detection tool and detection method for intelligent electric control valve of water meter

CN122016192ACN 122016192 ACN122016192 ACN 122016192ACN-122016192-A

Abstract

The invention relates to the technical field of water meter valves, in particular to a valve sealing performance testing device, in-leakage detection tools for intelligent electric control valves of water meters, which comprise an assembly simulation driver, a detection device, a control module and a control module, wherein the assembly simulation driver is connected with a valve body to be tested and used for reproducing the mechanical connection state and accumulated errors of the valve body assembled with an intelligent control actuator in the test, the detection device is used for performing sealing test on the valve body assembled with the assembly simulation driver, the control module is in communication connection with the assembly simulation driver and the detection device, the assembly simulation driver comprises the actuator and a fixed transmission structure, the actuator is in driving connection with the valve body through the fixed transmission structure, and the control module is configured to control the actuator to perform at least one closing operation and opening operation on a valve core of the valve body and trigger the detection device to perform sealing detection on the valve body after the actuator is controlled to be in the closed state.

Inventors

  • YANG SHANPING
  • LIN YANGXUAN

Assignees

  • 浙江威星智能仪表股份有限公司

Dates

Publication Date
20260512
Application Date
20251231

Claims (10)

  1. 1. The intelligent electric control valve internal leakage detection tool for the water meter is characterized by comprising an assembly simulation driver (1), detection equipment, a control module and a control module, wherein the assembly simulation driver (1) is connected with a valve body (2) to be detected and is used for reproducing the mechanical connection state and accumulated errors of the valve body (2) assembled with an intelligent control actuator in a test, the detection equipment is used for performing tightness test on the valve body (2) assembled with the assembly simulation driver (1), the control module is in communication connection with the assembly simulation driver (1) and the detection equipment, the assembly simulation driver (1) comprises an actuator (11) and a fixed transmission structure (12), the actuator (11) is in driving connection with the valve body (2) through the fixed transmission structure (12), and the control module is configured to control the actuator (11) to perform at least one closing operation and one opening operation on a valve core of the valve body (2) and trigger the detection equipment to perform tightness test on the valve body (2) after the actuator (11) is controlled to be in a closed state.
  2. 2. The intelligent electric control valve internal leakage detection tool for the water meter of claim 1, wherein the fixed transmission structure (12) comprises a fixed plate (121), a bottom plate (122), an upper cover (123), a transfer rod (124) and a sealing ring (125), the fixed plate (121) is used for connecting the valve body (2) and the bottom plate (122), the transfer rod (124) is connected with the output end of the actuator (11) and is used for driving a valve core in the valve body (2), and the sealing ring (125) is assembled between the upper cover (123) and the bottom plate (122).
  3. 3. The intelligent electric control valve internal leakage detection tool for the water meter is characterized by comprising a pressure supply unit, a high-precision pressure sensor (3), a high-definition camera (4) and a pneumatic valve (5), wherein the pressure supply unit is used for supplying test gas to an inlet end of a valve body (2) in a closed state through the pneumatic valve (5), the high-precision pressure sensor (3) is used for monitoring pressure change of the inlet end of the valve body (2), the high-definition camera (4) is assembled above the valve body (2) and used for shooting an outlet end area image of the valve body (2) immersed in liquid, and the control module is further configured to receive and analyze pressure data of the high-precision pressure sensor (3) and image data acquired by the high-definition camera (4) and automatically judge whether internal leakage of the valve body is qualified or not based on analysis results.
  4. 4. The intelligent electric control valve internal leakage detection tool for the water meter according to claim 3, wherein the pressure supply unit comprises a pressure regulating valve (6) for regulating and stabilizing the pressure of the test gas input into the valve body (2) at a preset value, and the pneumatic valve (5) is in communication connection with the control module and is used for automatically switching on or switching off the test gas leading to the valve body (2) according to the instruction of the control module.
  5. 5. The intelligent electric control valve internal leakage detection tool for the water meter according to claim 1, wherein the detection equipment further comprises a base (7) and a clamping mechanism (8), the base (7) is used for bearing and positioning a test assembly body formed after the valve body (2) is connected with the assembly simulation driver (1), and the clamping mechanism (8) is used for fixing the test assembly body on the base (7).
  6. 6. The intelligent electric control valve internal leakage detection tool for the water meter, as set forth in claim 5, is characterized in that the detection equipment further comprises a water tank (9) for containing detection liquid, and the inlet end (21) and the outlet end (22) of the valve body (2) are both provided with sealing assemblies (10) so that the inlet end (21) and the outlet end (22) of the valve body (2) are immersed below the liquid level of the water tank (9) during detection.
  7. 7. The intelligent electric control valve internal leakage detection tool for the water meter according to claim 6, wherein the sealing assembly (10) comprises a tetrafluoro gasket (101) and a baffle plate (102) which are arranged at the outlet end (22) of the valve body (2), and a rubber gasket (103) which is arranged at the inlet end (21) of the valve body (2).
  8. 8. The intelligent electric control valve internal leakage detection tool for the water meter is characterized in that a length adjusting mechanism (71) is arranged on a base (7) and used for adapting to valve bodies (2) with different lengths, the length adjusting mechanism (71) comprises at least one screw (711) and two adjusting nuts (712), the screw (711) penetrates through the side wall of the base (7) and is connected with the baffle (102) at the end part, and the two nuts (712) are connected to the screw (711) in a threaded mode and are assembled on two sides of the side wall of the base (7).
  9. 9. The intelligent electric control valve internal leakage detection tool for the water meter according to claim 1, wherein the control module further comprises a data communication unit for uploading valve body identification information, test process data and detection results to a Manufacturing Execution System (MES).
  10. 10. An intelligent control valve internal leakage detection method for a water meter, which is characterized by comprising the following steps based on the intelligent control valve internal leakage detection tool for the water meter according to any one of claims 1-9: S1, pre-assembling a valve body (2) and the assembly simulation driver (1) to form a test assembly; S2, installing and fixing the test assembly in the detection equipment; S3, controlling the actuator (11) to drive the valve body (2) to finish at least one closing operation through the control module; s4, in the closed state of the valve body (2), the control module controls the pneumatic valve (5) to be connected with test gas and triggers the detection equipment to detect tightness; S5, the control module analyzes the pressure data and the image data obtained by the tightness detection and generates a judging result.

Description

Inner leakage detection tool and detection method for intelligent electric control valve of water meter Technical Field The invention relates to the technical field of water meter valves, in particular to a valve sealing performance testing device. Background In the production process, the electric control valve is qualified in tightness test before assembly, but is internally leaked after assembly. This is mainly due to the fact that the valve stem, ball and actuator have a relatively large accumulated error during assembly, which results in a valve that cannot be fully closed in place. At present, most valve internal leakage testing tools are not provided with an actuator, the real assembly state of the valve cannot be simulated, and once internal leakage occurs, the valve can be replaced only by disassembling a sealed structural member, so that the production efficiency is seriously affected. In addition, the valve testing process usually lacks system record, is difficult to trace back valve information and testing history after leaving the factory, and brings inconvenience to later maintenance. Chinese patent document publication No. CN118243305A discloses a valve tightness test fixture. According to the scheme, the vacuum pump and the air compressor are used for rapidly establishing pressure difference on two sides of the valve core under the state that the valve is closed, so that the static sealing performance of the valve core body is effectively tested. The valve is fixed and ensured to be in a closed state, two plugging components are utilized to seal two ends of the valve, then a vacuum pump pumps air at one side of the valve core to form a negative pressure area, and meanwhile, the air compressor pressurizes the pumped air and then injects the pumped air into the other side to form a positive pressure area, so that the two sides can quickly reach the pressure difference required by the test. After the test is finished, the valve is opened by a driving mechanism or manually, and the gas in the positive pressure area is naturally and rapidly supplemented to the negative pressure area, so that mute pressure relief is realized, and the test period is shortened. However, this device has the obvious limitation that the test precondition is that the valve has been manually or automatically actuated to the closed position in advance, essentially verifying the tightness of the valve cartridge in the "assumed valve closed" condition. The whole test process is completely free from the capability of simulating the real assembled state of the valve and the external actuator. The device can not reproduce the dimension accumulated errors generated by the actuator driving shaft, the valve rod and the valve ball in the assembly process, integrate the actuator in the test and actively and repeatedly control the opening and closing actions of the valve. Therefore, the tool cannot diagnose the internal leakage problem caused by the specific reason that the valve cannot be driven to the full sealing position due to assembly errors. Disclosure of Invention In order to overcome the defects in the prior art, the utility model provides an interior leak detection frock of automatically controlled valve of water gauge intelligence. The intelligent electric control valve internal leakage detection tool for the water meter comprises an assembly simulation driver, detection equipment, a control module and a control module, wherein the assembly simulation driver is connected with a valve body to be detected and used for reproducing the mechanical connection state and accumulated errors of the valve body assembled with an intelligent control actuator in a test, the detection equipment is used for performing tightness test on the valve body assembled with the assembly simulation driver, the control module is in communication connection with the assembly simulation driver and the detection equipment, the assembly simulation driver comprises the actuator and a fixed transmission structure, the actuator is in driving connection with the valve body through the fixed transmission structure, the control module is configured to control the actuator to perform at least one closing operation and opening operation on a valve core of the valve body, and the detection equipment is triggered to perform tightness detection on the valve body after the actuator is controlled to be in a closed state. As a preferred embodiment of the invention, the fixed transmission structure comprises a fixed plate, a bottom plate, an upper cover, a switching rod and a sealing ring, wherein the fixed plate is used for connecting the valve body and the bottom plate, the switching rod is connected with the output end of the actuator and used for driving a valve core in the valve body, and the sealing ring is assembled between the upper cover and the bottom plate. As a preferred embodiment of the invention, the detection device comprises a pressure supply unit, a