Full-automatic water meter sealing performance detection device

Abstract

The invention relates to the technical field of detection devices, and discloses a full-automatic water meter sealing performance detection device which comprises a rack, a pneumatic meter clamping mechanism, a piston type pressurization system, a PLC control system, a touch screen and a water source system. An air cylinder body of the pneumatic meter clamping mechanism is connected with a transverse guide rail bolt of the machine frame through an L-shaped support, and a clamping jaw is coaxially connected with an air cylinder piston rod through a flange. Closed-loop control can be achieved in cooperation with a piston type pressurization system and a PLC control system, and the pressure control precision and efficiency are high. A wireless bar code scanner is further arranged and is in communication connection with the PLC control system, automatic identification can be achieved, manual recording errors are eradicated, unmanned operation is achieved through a full-automatic detection process, and meanwhile a complete quality tracing function is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a full-automatic water meter sealing detection device. Background Art

[0002] As a critical measuring instrument in water supply networks, the sealing performance of water meters directly impacts their accuracy and service life. A water meter sealing test device is used to inspect the sealing performance of the meter's housing, interfaces, and internal structure. Its core components are a pressure source, a sealing chamber, a pressure sensor, and seals. Its primary function is to verify whether a water meter is leaking under normal use or under specific pressure conditions.

[0003] Existing water meter leak detection methods suffer from the following major technical issues: Traditional manual testing relies on manual pressure application and visual inspection by operators, resulting in low detection efficiency. Manual judgment is subjective, making it difficult to detect minor leaks. Pressure control accuracy is poor, and the system cannot meet the testing requirements for high-precision water meters. Existing automated equipment uses high energy consumption for hydraulic clamping systems and requires regular hydraulic oil replacement. Mechanical pressure gauges for monitoring result in large reading errors. The system lacks data traceability, preventing automatic recording and statistical analysis of test results. It cannot accommodate different water meter calibers. Most systems utilize a split-frame structure, occupying a large footprint. Vacuum testing can only determine the leak tightness of joints, failing to detect meter body leaks. Pressure control relies on a mechanical pressure regulating valve, resulting in a slow response.

[0004] In view of this, it is necessary to provide a fully automatic water meter sealing detection device to solve the problems existing in the prior art, such as low detection efficiency, high energy consumption of the hydraulic clamping system, lack of data traceability function, and inability to automatically record and statistically analyze the test results. Summary of the Invention

[0005] In view of this, the present invention proposes a fully automatic water meter sealing detection device, which aims to solve the problems existing in the prior art, such as low detection efficiency, high energy consumption of the hydraulic clamping system, lack of data traceability function, inability to automatically record and statistically analyze the detection results, and inability to meet the rapid switching requirements of water meters of different calibers.

[0006] The present invention proposes a fully automatic water meter sealing detection device, which includes a frame, a pneumatic meter clamping mechanism, a piston-type boosting system, a PLC control system and a water source system, wherein: a pipeline is connected to the frame of the frame, a pneumatic meter clamping mechanism is provided on the work surface of the frame, and an air inlet of the pneumatic meter clamping mechanism is connected to an air source processing unit provided at the bottom of the frame through an air pipe; the piston-type boosting system is provided inside the frame, and the boosting cylinder of the piston-type boosting system is connected to the main pipeline of the pipeline through a flange, and the main pipeline branches are respectively connected to each pneumatic meter clamping mechanism through an electromagnetic valve group; and a water source system is provided at the lower rear side of the frame.

[0007] Furthermore, the pneumatic table clamping mechanism includes a cylinder, a clamping jaw and a pneumatic booster pump, wherein the cylinder body is connected to the transverse guide rail bolts of the frame through an L-shaped bracket; the clamping jaw is coaxially connected to the cylinder piston rod through a flange.

[0008] Furthermore, the pneumatic meter clamping mechanism also includes a guide slide rail assembly and an air circuit quick connector. The guide slide rail assembly includes two linear guide rails and four sliders, which are symmetrically arranged on both sides of the clamping jaw to make the clamping jaw symmetrical; the air circuit quick connector is connected to the solenoid valve group at the bottom of the rack through an air pipe.

[0009] Furthermore, the water source system includes a water tank, the water outlet of the water tank is connected to the water pump inlet through a water pipe, and the water pump outlet is connected to the water inlet end of the piston-type boosting system through a water pipe.

[0010] Furthermore, the piston-type boosting system includes a pneumatic boosting cylinder, a pressure vessel, a high-pressure accumulator and a pilot safety valve, wherein the cylinder body of the pneumatic boosting cylinder is threadedly connected to the load-bearing beam of the frame through a flange base; the pressure vessel is rigidly connected to the output end of the pneumatic boosting cylinder through a stud bolt; the high-pressure accumulator is connected to the main line in parallel through a three-way joint; the pilot safety valve is arranged at the top of the pressure vessel, and the pressure relief port is led to the water tank through the main line.

[0011] Furthermore, the PLC control system includes: a main controller, which is arranged in the electrical control cabinet through a guide rail; a pressure acquisition module, which is connected to the pressure sensor through a shielded cable; a temperature acquisition module is provided with a temperature sensor in the water tank; and a relay output module is electrically connected to the solenoid valve group and the alarm indicator light.

[0012] Furthermore, the water source system also includes: a water level sensor, installed on the upper part of the side wall of the water tank through a flange; an automatic water replenishment solenoid valve, connected to the external water supply system through the pipeline; a precision filter, arranged at the front end of the water inlet of the water pump; and a pressure buffer tank, connected to the water outlet of the water pump through a joint.

[0013] Furthermore, a touch screen is threadedly connected to the front side of the rack, and the touch screen is provided with a status indicator light and buttons.

[0014] Furthermore, it also includes a data management subsystem, which includes: a wireless barcode scanner, which is communicated with the PLC control system; a data storage module, which uses an SD card to store detection records; an export function module, which is connected to an external device through a USB interface; and a network communication module for uploading data to an external device.

[0015] Furthermore, the PLC control system is electrically connected to the pressure sensor, the temperature sensor, the solenoid valve group and the touch screen.

[0016] Compared with the prior art, the fully automatic water meter sealing detection device provided by the present invention has the following beneficial effects:

[0017] ① By setting up a pneumatic quick clamping mechanism, its air inlet is connected to the air source processing unit set at the bottom of the frame through the air pipe, and is connected to each main line branch through the solenoid valve group, so that the single clamping time is short. Compared with the traditional hydraulic clamping method, the efficiency is improved. In conjunction with the piston-type booster system and PIC control system, closed-loop control is achieved, and the pressure control accuracy is high.

[0018] ②By setting up a wireless barcode scanner and communicating with the PLC control system, automatic barcode recognition can be achieved, eliminating manual recording errors, with complete quality traceability function, and automatically recording the pressure-time curve of each water meter.

[0019] ③ The combination of the frame, pneumatic clamping mechanism, piston-type booster system, PLC control system, and water source system enables a fully automated testing process, enabling unmanned operation and high-speed testing. Test results can be directly transmitted to external devices through an export function module, making operation easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0021] Figure 1 A schematic structural diagram of a fully automatic water meter sealing detection device provided by an embodiment of the present invention;

[0022] Figure 2 This is a principle block diagram of a control system of a fully automatic water meter sealing detection device provided by an embodiment of the present invention.

[0023] In the figure: 01 - frame, 02 - pneumatic meter clamping mechanism, 03 - piston booster system, 04 - PLC control system, 05 - touch screen, 06 - water source system. DETAILED DESCRIPTION

[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0025] Reference Figure 1 and Figure 2 As shown, the present application discloses a fully automatic water meter sealing detection device, including a frame 01, a pneumatic meter clamping mechanism 02, a piston-type boosting system 03, a PLC control system 04 and a water source system 06, wherein: the frame of the frame 01 is connected to a pipeline, the pneumatic meter clamping mechanism 02 is provided on the work surface of the frame 01, and the air inlet of the pneumatic meter clamping mechanism 02 is connected to the air source processing unit provided at the bottom of the frame 01 through an air pipe; the piston-type boosting system 03 is provided inside the frame 01, and the boosting cylinder of the piston-type boosting system 03 is connected to the main pipeline of the pipeline through a flange, and the main pipeline branches are respectively connected to each pneumatic meter clamping mechanism 02 through an electromagnetic valve group;

[0026] A water source system 06 is provided at the lower rear portion of the frame 01 .

[0027] The pneumatic meter clamping mechanism 02 includes a cylinder, a clamping jaw, and a pneumatic booster pump. The cylinder body is bolted to the horizontal guide rail of the frame 01 via an L-shaped bracket; the clamping jaw is coaxially connected to the cylinder piston rod via a flange. The pneumatic meter clamping mechanism 02 also includes a guide rail assembly and a pneumatic quick connector. The guide rail assembly consists of two linear guides and four sliders, symmetrically arranged on either side of the clamping jaw to ensure symmetry. The pneumatic quick connector is connected to the solenoid valve assembly at the bottom of the frame 01 via an air pipe.

[0028] It can be seen from this that the structure of the fully automatic water meter sealing detection device in this application is as follows: Figure 1 As shown: Frame 01 utilizes a 304 stainless steel welded frame with a plastic-sprayed finish. The work surface is equipped with six inspection stations, each spaced apart. The bottom panel integrates a triple air conditioning unit: a filter, a pressure regulator, and an oil mist collector. The main line utilizes stainless steel rigid tubing, while the branch lines utilize polyurethane hoses. The pneumatic circuit utilizes pressure-resistant nylon tubing.

[0029] In one preferred embodiment, the pneumatic clamping mechanism 02 is driven by a standard cylinder operating at 0.6 MPa. The actuator is a custom three-jaw linkage clamp. The guide assembly comprises two linear guides with four sliders forming a dual-track structure. The booster module is a pneumatic booster pump, and the quick connector is a pneumatic quick-connect. The piston booster system 03 comprises a double-acting booster cylinder equipped with a servo motor-driven ball screw. Its operating pressure range is adjustable and a pressure sensor is also provided.

[0030] The PLC control system 04 includes a main control unit PLC, a human-machine interface, an expansion module, and a safety circuit. The human-machine interface is a 7-inch touch screen 05, and the safety circuit is equipped with an emergency stop button and a light curtain protection. The specific configuration of the water source system 06 is to use a 304 stainless steel water tank with a volume of preferably 200L, a multi-stage centrifugal pump, and a precision filter. At the same time, the centrifugal pump has a flow rate of 10m 3 / h, lift 62m.

[0031] The control system principle block diagram is as follows Figure 2 As shown: the water meter to be tested is manually placed to trigger the sensor; the cylinder drives the clamping jaws to close and output a clamping force of 120N; the piston-type booster system 03 is pressurized, rapidly increasing the pressure at a rate of 0.2MPa / s; the pressure is maintained for 30s, and the pressure drop is allowed to be ≤0.05MPa; data collection and judgment are performed. In one preferred embodiment, the leakage rate parameter is set to ≤0.1ml / min; a drainage and exhaust reset operation is performed to reduce the residual pressure to a threshold value.

[0032] Specifically, the water source system 06 includes a water tank, the water tank outlet of which is connected to the water pump inlet via a water pipe, and the water pump outlet is connected to the water inlet of the piston-type booster system 03 via a water pipe. The piston-type booster system 03 includes a pneumatic booster cylinder, a pressure vessel, a high-pressure accumulator, and a pilot-operated safety valve. The cylinder body of the pneumatic booster cylinder is threadedly connected to the load-bearing beam of the frame 01 via a flange base; the pressure vessel is rigidly connected to the output end of the pneumatic booster cylinder via stud bolts; the high-pressure accumulator is connected in parallel to the main pipeline via a T-joint; the pilot-operated safety valve is installed at the top of the pressure vessel, and the pressure relief port is connected to the water tank via the main pipeline.

[0033] The PLC control system 04 includes: a main controller mounted on a guide rail within the electrical control cabinet; a pressure acquisition module connected to the pressure sensor via a shielded cable; a temperature acquisition module equipped with a temperature sensor within the water tank; and a relay output module electrically connected to the solenoid valve assembly and alarm indicator light. The PLC control system 04 is electrically connected to the pressure sensor, temperature sensor, solenoid valve assembly, and touch screen 05.

[0034] The water source system 06 also includes: a water level sensor, installed on the upper part of the side wall of the water tank through a flange; an automatic water replenishment solenoid valve, connected to the external water supply system through the pipeline; a precision filter, arranged at the front end of the water inlet of the water pump; a pressure buffer tank, connected to the water outlet of the water pump through a joint.

[0035] As can be seen, the water tank assembly for Water Source System 06 is a welded cylindrical 304 stainless steel tank with a removable top cover with a silicone seal and a tapered drain outlet at the bottom. The outlet of the connecting pipe is fitted with a stainless steel flange, connected to the water pump inlet via a food-grade rubber hose. The return port is located on the upper side of the tank and uses a quick-release clamp connector. The tank also features a built-in capacitive level sensor and an electric heater with a temperature control range of 20-50°C.

[0036] The water pump system uses a flow rate of 10m 3 / h, head 62m, power 1.1kW multi-stage centrifugal pump, the motor is equipped with a 0-50Hz adjustable frequency drive, a pressure buffer tank with a volume of 5L is set at the outlet end of the pipeline, and the pressure buffer tank is connected to the water inlet end of the piston-type booster system 03 through a high-pressure hose.

[0037] In piston-type booster system 03, a double-acting booster cylinder serves as the pneumatic booster. The flange base is made of steel and secured to the load-bearing beam of frame 01 with stainless steel bolts. A 10L pressure vessel made of 316L stainless steel is rigidly connected to the booster cylinder with stud bolts and a copper gasket installed at the joint. The high-pressure accumulator is connected in parallel to the main line via a T-joint. A pilot-operated safety valve and a pressure monitoring unit are also included as safety and control components. The pressure relief port of the pilot-operated safety valve is routed to the water tank return port via stainless steel piping. A silencer is installed in the pressure relief line to reduce noise. Digital pressure transmitters utilize multi-point pressure sampling and can be installed at the booster cylinder inlet, pressure vessel, and accumulator. The main booster line utilizes 316L stainless steel rigid tubing, while branch lines use high-pressure hoses. Key joints are connected with flanges, and non-pressure-bearing areas are secured with compression fittings.

[0038] During operation, the water pump starts, pumping water from the water tank through the buffer tank into the booster cylinder. A liquid level sensor monitors the water level in the tank in real time, triggering an alarm if the water level is low, completing the filling process. The pneumatic booster cylinder is driven by compressed air, building up a test pressure within the pressure vessel. The accumulator absorbs pressure pulsations, completing the boosting process. When the pressure in the pressure vessel exceeds the threshold, the pilot-operated safety valve automatically opens to release pressure, allowing the relief water to flow through the spiral cooling tube and return to the water tank.

[0039] The PLC control system 04 is secured to the electrical control cabinet via guide rails and includes analog input and digital output modules. The pressure sensor is connected to the analog input channel via a twisted-pair shielded cable, with each workstation independently occupying one AI channel, for a total of six channels. A filtering circuit is configured to process the signal, and digital filtering is also implemented on the software side. The temperature sensor is equipped with a dedicated RTD input module, installed in the lower middle portion of the water tank sidewall, submerged below the water surface. The digital output module connects to and controls the solenoid valves, with each solenoid valve group allocated a relay channel. The alarm indicator is set to red and controlled via an intermediate relay, and the buzzer is directly connected to the PLC digital output module.

[0040] In actual work, the PLC control system 04 needs to be initialized. The specific operation steps are to test the communication status of the pressure sensor, temperature sensor and solenoid valve, import the preset pressure curve from the touch screen 05, and complete the initialization parameter configuration.

[0041] Water source system 06 also features a capacitive water level sensor, flange-mounted to the side of the water tank near the top. The flange is welded to the tank, and the gasket is made of EPDM. The signal cable is connected to the PLC analog input module via a shielded cable and equipped with a signal isolator. When the water level sensor detects that the water level falls below the threshold, the PL control system outputs a signal to trigger the water supply solenoid valve. The water level sensor monitors the water level in real time, automatically shutting off the water supply when the water level reaches the threshold. If water supply exceeds five minutes, a water supply timeout alarm is triggered. If the water level signal is abnormal, the system switches to the backup water level float switch. A filter is installed at the front of the water supply solenoid valve and a check valve at the rear to prevent backflow. The pressure buffer tank is made of 304 stainless steel and is mounted vertically. It is flange-connected to the pump outlet, has a pressure gauge mounted on the top, and a drain valve at the bottom. It eliminates pressure fluctuations caused by pump startup and shutdown, maintains system pressure stability, and keeps pressure fluctuations during transient flow changes within a controllable range. A safety valve is also included as a secondary protection.

[0042] During the operation, the water level sensor must be calibrated. A dedicated inflation tool is used to adjust the nitrogen pressure to the buffer tank's pre-charge pressure. The solenoid valve's opening and closing motion is verified using the PLC's forced output function, and the time from full opening to full closing is recorded. The overall system utilizes a water level sensor and logic integration with the PLC control system 04 to provide primary protection. A mechanical float switch directly cuts off the pump's power supply for backup protection. The buffer tank's safety valve provides primary protection, while the PLC's overpressure shutdown routine provides secondary protection for overpressure. Furthermore, a leakage protector is installed in the water supply solenoid valve circuit, and the pump motor is equipped with an overheating switch.

[0043] Specifically, a touch screen 05 is threadedly connected to the front side of the rack 01, and the touch screen 05 is provided with a status indicator light and buttons.

[0044] It can be seen that the touch screen 05 is provided with a red / yellow / green three-color LED ring light, and has a number of backlit membrane buttons for emergency stop, reset, manual / automatic switching, etc. In one preferred embodiment, it is equipped with a scale positioning locking knob to support pitch angle adjustment. The main monitoring interface displays the 6-station pressure curve and digital instrument panel of parameters such as water temperature, water level, and air pressure in real time, providing an overview of the system status. Specifically, when the system is operating normally, all subsystems have no alarms, and the display is green when the detection is in progress; in warning status, it displays yellow when there are minor alarms such as filter blockage and water replenishment timeout; in fault shutdown, such as pressure exceeding the limit, emergency stop triggering, and safety circuit disconnection, it displays red; in emergency status, such as mechanical interference, electrical short circuit and other major faults, it displays flashing red.

[0045] Specifically, it also includes a data management subsystem, which includes: a wireless barcode scanner, which is in communication with the PLC control system 04; a data storage module, which uses an SD card to store detection records; an export function module, which is connected to an external device through a USB interface; and a network communication module for uploading data to an external device.

[0046] It can be seen that the wireless barcode scanner is fixed to the right side of the rack 01 through a magnetic charging base and can rotate 360 degrees. The barcode information is automatically bound to the detection record. The single record information includes the timestamp, barcode, pressure value and judgment result. At the same time, when the storage space is lower than the threshold, an early warning is triggered. When in use, you can insert a USB flash drive, pop up the export menu, select the time period / station, generate a ZIP compressed package to complete the data export. In one of the preferred embodiments, if the reading fails for three consecutive times, an audible and visual alarm is triggered. If the network is disconnected for more than 30 minutes, an SMS alarm is activated. If the local cache is full, the earliest data is overwritten in chronological order.

[0047] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of a fully hardware embodiment, a fully software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media, including but not limited to magnetic disk storage, CD-ROM, optical storage, and the like, containing computer-usable program code.

[0048] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0049] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0050] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A fully automatic water meter sealing detection device, characterized in that: The invention comprises a frame (1), a pneumatic meter clamping mechanism (2), a piston-type pressurizing system (3), a PLC control system (4) and a water source system (6), wherein: The frame of the rack (1) is connected to a stainless steel pipeline, and a pneumatic meter clamping mechanism (2) is provided on the working surface of the rack (1). The air inlet of the pneumatic meter clamping mechanism (2) is connected to the air source processing unit provided at the bottom of the rack (1) through an air pipe; The piston-type boosting system (3) is provided inside the frame (1); the boosting cylinder of the piston-type boosting system (3) is connected to the main line of the stainless steel pipeline via a flange; the branches of the main line are respectively connected to each pneumatic clamping mechanism (2) via a solenoid valve group; A water source system (6) is provided at the lower rear portion of the frame (1).

2. The fully automatic water meter sealing detection device according to claim 1, characterized in that: The pneumatic meter clamping mechanism (2) comprises a cylinder, a clamping jaw and a pneumatic booster pump, wherein the cylinder body is bolted to the transverse guide rail of the frame (1) via an L-shaped bracket; and the clamping jaw is coaxially connected to the cylinder piston rod via a flange.

3. A fully automatic water meter sealing detection device according to claim 2, characterized in that: The pneumatic meter clamping mechanism (2) further comprises a guide rail assembly and an air circuit quick connector, wherein the guide rail assembly comprises two linear guide rails and four sliders, which are symmetrically arranged on both sides of the clamping jaws to make the clamping jaws symmetrical; the air circuit quick connector is connected to the electromagnetic valve group at the bottom of the frame (1) through an air pipe.

4. The fully automatic water meter sealing detection device according to claim 1, characterized in that: The water source system (6) includes a water tank, the water outlet of the water tank is connected to the water pump inlet through a water pipe, and the water pump outlet is connected to the water inlet end of the piston-type boosting system (3) through a water pipe.

5. A fully automatic water meter sealing detection device according to claim 1 or 4, characterized in that: The piston-type boosting system (3) comprises a pneumatic boosting cylinder, a pressure vessel, a high-pressure accumulator and a pilot-operated safety valve, wherein the cylinder body of the pneumatic boosting cylinder is threadedly connected to the load-bearing beam of the frame (1) via a flange base; The pressure vessel is rigidly connected to the output end of the pneumatic booster cylinder via stud bolts; The high-pressure accumulator is connected in parallel to the main line via a three-way connector; The pilot-operated safety valve is arranged on the top of the pressure vessel, and the pressure relief port is led to the water tank through the main pipe.

6. A fully automatic water meter sealing detection device according to claim 5, characterized in that: The PLC control system (4) comprises: a main controller, which is arranged in an electrical control cabinet via a guide rail; The pressure acquisition module is connected to the pressure sensor through a shielded cable; The temperature acquisition module is provided with a temperature sensor in the water tank; The relay output module is electrically connected to the solenoid valve group and the alarm indicator light.

7. A fully automatic water meter sealing detection device according to claim 1 or 4, characterized in that: The water source system (6) further comprises: a water level sensor, which is mounted on the upper part of the side wall of the water tank via a flange; Automatic water supply solenoid valve, connected to the external water supply system through a pipeline; A precision filter is provided at the front end of the water inlet of the water pump; The pressure buffer tank is connected to the water outlet of the water pump through a joint.

8. The fully automatic water meter sealing detection device according to claim 1, characterized in that: The front side of the frame (1) is also threadedly connected to a touch screen (5), and the touch screen (5) is provided with a status indicator light and buttons.

9. The fully automatic water meter sealing detection device according to claim 1, characterized in that: It also includes a data management subsystem, which includes: a wireless barcode scanner, which is in communication with the PLC control system (4); Data storage module, using SD card to store detection records; Export function modules and connect to external devices via USB interface; Network communication module, used to upload data to external devices.

10. A fully automatic water meter sealing detection device according to claim 6 or 8, characterized in that: The PLC control system (4) is electrically connected to the pressure sensor, the temperature sensor, the electromagnetic valve group and the touch screen (5).

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