[Meter's Latest Patent] Automatic Parallel-connected Water Meter Pressure Check Verification Device

Content Description

The utility model belongs to the technical field of water pressure detection of a water meter, in particular to a full-automatic parallel water meter pressure checking and verification device.

Background of the invention

Water meters are widely used in tap water, thermal power, and chemical industries. The companies or measurement departments that produce water meters need to perform performance checks on the indication errors of these water meters in accordance with the procedures established by the relevant departments. The pressure verification of the water meter can not only detect the water pressure and the watertightness of the water meter, but also can test the tempered glass of the wet water meter and the performance of the water meter housing. At present, the production verification work of water meters is based on manual installation of the water meter, calibration, calculation records and unloading work. The work efficiency is very low, and the manual needs to close the valve waiting for the standard amount when reading the pressure indication. The liquid level in the device is stable, the stability of these start-stop phases, the scale resolution of the water meter being checked, and the human factors all affect the accuracy of the calibration. There are many defects such as large workload, low efficiency, low precision, large artificial error, and unqualified test results.

Summary of the Invention

The purpose of the utility model is to overcome the deficiencies in the prior art and provide a fully automatic parallel pressure meter pressure verification and verification device with high verification efficiency and high precision and capable of cooperating with a production line production mode.

The purpose of the utility model is accomplished through the following technical solutions, including a water meter detection device, a proximity switch, an automatic assembly line and a pressure resistance test stand, and ten water meter detection devices are installed on the pressure resistance test stand in sequence, and the water meter is tested. The devices are connected together in parallel; the automated assembly line is installed in the pressure detection platform, and the proximity switch is located on the side of the automated assembly line; the water meter detection device includes a water meter verification basis, a pressure keeping mechanism, a pressure regulating mechanism, and manual protection. Device, pressure reading device, test tube section and control system; the water meter verification basic mechanism includes test tube section P1, test water meter L1, electromagnetic diaphragm valve A2, and electromagnetic diaphragm valve A3. The water gauge L1 corresponds to a pressure reading device; the pressure keeping mechanism is composed of a water meter L1 to be checked, an electromagnetic diaphragm valve A2, and an electromagnetic diaphragm valve A3; the pressure regulating mechanism adjusts the water pressure through an overflow valve. Pressure is provided to the test section P1; the manual protection device is inspected by closing the manual ball valve K1 and connected in series with the hydropower The front of the diaphragm valve A1; the pressure reading device includes a pressure sensor N1 and a digital pressure transmitter M1; the front end of the test pipe segment P1 introduces the water source into the pipeline through a variable frequency pump, and the end of the test pipe segment P1 passes through the pipeline. Water is introduced into the return tank; the control system is connected to the solenoid valves and pressure reading device wires.

Figure is the pressure test principle diagram of the utility model

Preferably, a drainage mechanism controlled by a control system is also included. The drainage mechanism includes an electromagnetic diaphragm valve A4, a two-position two-way solenoid valve Z1, a triple-joint, and an air compressor that are sequentially disposed on a pipeline that communicates with the front end of the test tube section P1. The machine consists of a filter, a pressure reducing valve, and an oil mister.

The water meter verification basic organization also includes a standard water source device, a variable frequency pump, a water inlet electromagnetic diaphragm valve A1 and a front and rear air cylinder clamp X1 for clamping a water meter. The pipeline will be a standard water source device, a variable frequency pump, and a water meter to be tested L1 The test section P1 is in communication with the test section. The water inlet electromagnetic diaphragm valve A1 is controlled by a control system and is disposed on a pipeline that communicates with the first end. The pressure keeping mechanism consists of a water meter L1 to be inspected, an electromagnetic diaphragm valve A2, an electromagnetic diaphragm valve A3, an electromagnetic diaphragm valve A2, an intermediate pipeline of an electromagnetic diaphragm valve A3, and two air cylinder clamps X1. The cylinder heads X1 are respectively connected with two two-position and five-way solenoid valves Y1.

Preferably, the valve includes a relief valve and a return tank, and the pressure of the water is adjusted through the overflow valve and pressure is supplied to the test pipe section P1. The relief valve communicates with the variable frequency pump through the pipe. The pressure reading device includes a pressure sensor N1 and a digital pressure transmitter M1, and the pressure sensor N1 can be set on any section of a pressure testing mechanism; the digital pressure transmitter M1 applies pressure. The signal of sensor N1 is amplified and sent to the control system. The control system adopts a computer remote control combined with an industrial automation mechanism controlled by a field PLC or a single-chip microcomputer control mechanism based on an embedded system.

The utility model has the beneficial effects that the utility model replaces the traditional ball valve with the high-life electromagnetic diaphragm valve, not only greatly improves the service life of the equipment, but also effectively solves the problem of the leakage pressure of the test pipe section, and the pressure check. After the water meter to be inspected needs to be drained in time to facilitate the transportation of the water meter on the assembly line and the sorting of the unqualified water meter. The utility model effectively and promptly aligns the school with a drainage mechanism composed of a discharge electromagnetic valve, a triple member and an air compressor. The post-inspection water meter performs the drainage work; the utility model can check the water meter of different specifications and different types to be inspected by replacing the air cylinder collet; the full-automatic pressure meter calibration verification device of the parallel water meter of the utility model is realized by a control system. The automation of the school table process, the control system can use computer remote control combined with on-site PLC control industrial automation or embedded system-based microcontroller control mechanism to control to achieve automatic calibration; through the pipeline positioning device to achieve automatic positioning of the water meter Clamp and start the pressure test procedure, and then complete the water exhaust - adjust Improve the drainage function of the database, the end of the test procedure is automatically calculated by the test results from the testing software and save it with test data query, correction, statistics, printing and so on - - dwell - pressure reading.

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