Today, I will introduce a national invention authorized patent-automatic parallel water meter withstand voltage verification and verification device. The patent was applied for by Hangzhou Water Meter Co., Ltd., and the authorization was announced on May 24, 2017.

The utility model belongs to the technical field of water meter withstand voltage detection, in particular to a fully automatic parallel water meter withstand voltage verification and verification device.

Water meters are widely used in tap water, heating, chemical and other industries. Enterprises or measurement departments that produce water meters need to perform performance verification on the indication errors of these water meters in accordance with the regulations established by relevant departments. Among them, the pressure test of the water meter can not only detect the water pressure and the sealing performance of the water meter, but also inspect the performance of the tempered glass and the water meter housing of the wet water meter. At present, the pressure-resistant production verification work of water meters relies on manual clamping, verification, calculation records and unloading of the water meters. The work efficiency is very low, and the manual needs to close the valve and wait for the standard amount when reading the pressure indicator. The liquid level in the vessel is stable. The stability of these start-stop phases, the scale resolution of the water meter being tested, and human factors will all affect the calibration accuracy. Many defects such as large workload, low efficiency, low precision, large human error, and unobjective verification results in this verification method are obvious.

The purpose of the utility model is to overcome the shortcomings of the prior art, and to provide a full-automatic parallel water meter withstand voltage verification and verification device with high verification efficiency and high precision, and capable of cooperating with the production mode of the assembly line.

The purpose of the utility model is accomplished through the following technical solutions, including a water meter detection device, a proximity switch, an automated assembly line, and a withstand voltage detection platform. Ten water meter detection devices are sequentially installed on the pressure detection platform. The water meter detection The devices are connected in parallel; the automated assembly line is installed in the withstand voltage detection platform, and the proximity switch is located on one side of the automated assembly line; the water meter detection device includes a water meter verification basic mechanism, a pressure maintaining mechanism, a pressure regulating mechanism, and manual protection Device, pressure reading device, test pipe section and control system; the water meter verification basic mechanism includes a test pipe section P1 and a test pipe section composed of the test pipe section P1 and the water meter L1 to be tested, the electromagnetic diaphragm valve A2 and the electromagnetic diaphragm valve A3 in series. The water meter L1 corresponds to a pressure reading device; the pressure maintaining mechanism is composed of the water meter L1 to be tested and the electromagnetic diaphragm valve A2 and the electromagnetic diaphragm valve A3; the pressure regulating mechanism adjusts the water pressure through an overflow valve and Provide pressure to the test pipe section P1; the manual protection device is to close the manual ball valve K1 for pipeline maintenance, and is connected in series in front of the water inlet electromagnetic diaphragm valve A1; the pressure reading device includes a pressure sensor N1 and a digital display pressure Transmitter M1; the front end of the test pipe section P1 introduces the water source into the pipeline through a variable frequency pump, and the tail end of the test pipe section P1 introduces water into the return tank through the pipeline; the control system is connected with the solenoid valves and the pressure reading device wires.

Preferably, it also includes a drainage mechanism controlled by a control system. The drainage mechanism includes an electromagnetic diaphragm valve A4, a two-position two-way electromagnetic valve Z1, a three-piece, and a pneumatic It is composed of a filter, a pressure reducing valve and an oil mist device.

The basic water meter verification mechanism also includes a standard water source device, a variable frequency pump, a water inlet electromagnetic diaphragm valve A1, and a front and rear cylinder clamp X1 that clamps the water meter. The pipeline connects the standard water source device, the variable frequency pump, and the water meter L1 to be tested. It is connected to the test pipe section P1 in sequence, and the water inlet electromagnetic diaphragm valve A1 is controlled by the control system and is arranged on the pipeline connected at the head end. The pressure holding mechanism is composed of the water meter L1 to be tested and the electromagnetic diaphragm valve A2, the electromagnetic diaphragm valve A3 and the electromagnetic diaphragm valve A2, the middle pipeline of the electromagnetic diaphragm valve A3, and two cylinder chucks X1. Two cylinder chucks X1 are respectively connected with two two-position five-way solenoid valves Y1.

Preferably, the above includes an overflow valve and a water return tank, the water pressure is adjusted through the overflow valve and the test pipe section P1 is provided with pressure, and the overflow valve is connected behind the variable frequency pump through a pipeline. The pressure reading device includes a pressure sensor N1 and a digital display pressure transmitter M1, the pressure sensor N1 can be set on any test pipe section of the pressure holding mechanism; the digital display pressure transmitter M1 The signal of the 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 an on-site PLC or a single-chip microcomputer control mechanism based on an embedded system.

The beneficial effects of the utility model are: the utility model replaces the traditional ball valve with a long-life electromagnetic diaphragm valve, which not only greatly improves the service life of the equipment, but also more effectively solves the problem of leaking pressure in the test pipe section, and checks the pressure resistance. The subsequent water meters to be inspected need to be drained in time to facilitate the transportation of the water meters on the assembly line and the sorting of unqualified water meters. The utility model uses a drainage mechanism composed of a drainage solenoid valve, a triple piece and an air compressor to effectively and quickly check the calibration. The water meter after inspection has been drained; the utility model can verify different specifications and different models of water meters to be inspected by replacing the cylinder chuck; the utility model's automatic parallel water meter withstand voltage verification and verification device is realized by the control system For the automation of the meter calibration process, the control system can be controlled by computer remote control combined with on-site PLC-controlled industrial automation mechanism or embedded system-based single-chip microcomputer control mechanism to realize automatic meter calibration; automatic meter positioning device can be realized through assembly line positioning device Clamp and start the pressure test program, and complete the water exhaust-pressure adjustment-pressure holding-pressure reading-drainage. After the verification is completed, the verification software automatically calculates the verification results according to the regulations and saves them. It has verification data query, correction, Complete database functions such as statistics and printing.

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