Water meter multiple pressure value and flow value comprehensive performance testing system and testing method

Abstract

The invention relates to a water meter multiple pressure value and flow value comprehensive performance testing system which comprises a front measuring unit and a rear measuring unit. The front measuring unit comprises a pressure sensor I, a booster pump and a pressure reducing valve, the pressure sensor I is used for detecting a pressure value of a testing working section, the booster pump and the pressure reducing valve are connected with a starting end pipeline of the testing working section and used for adjusting water pressure of the testing working section, and the rear measuring unit comprises a pressure sensor II, a standard pressure gauge and a standard electronic flow meter, the standard pressure gauge and the standard electronic flow meter are used for comparing set values. According to the system, the pressure value can be transformed along with testing requirements in real time, an instantaneous flow value is automatically adjusted, the system can accurately simulate different working conditions possibly met by a water meter in actual use process through automatic adjustment of different pressure values and different instantaneous flow values, the comprehensive performance of the water meter is comprehensively verified, an accurate data support is provided for performance improving of the water meter, static comprehensive pressure is tested, the comprehensive performance of dynamic multiple pressure values and instantaneous flow values are tested, and ultimate safety of the water meter is tested.

Description

technical field [0001] The invention relates to a water meter pressure and flow detection technology, in particular to a water meter multi-pressure value, flow value comprehensive performance testing system and testing method. Background technique [0002] A water meter is an instrument for measuring water flow. Most of them measure the cumulative flow of water. They are generally divided into two types: volumetric water meters and speed water meters. range, and then select the water meter of the specification with the usual flow rate closest to the value as the first choice. [0003] Under the influence of various factors, the change of water consumption of water users is very complicated, which brings great difficulties to the study of the law of water consumption change. The nature of water use determines the proportion of water consumption in each period, and it will also bring different degrees The impact of water consumption, such as production scale, production techn...

AI Technical Summary

Problems solved by technology

[0006] ①The pressure value is fixed, and it is impossible to quickly switch between multiple pressure values, and it is even more impossible to randomly switch the pressure value during the test;

[0007] ② During the ultimate pressure test, it is impossible to prepare and record the instantaneous ultimate pressure value of the water meter structure damage, and it is impossible to accurately understand the maximum pressure bearing capacity of the water meter structure;

[0008] ③When switching the pressure value, the specified instantaneous flow value switching cannot be automatically realized, and the manual switching rhythm is slow and the accuracy is poor. It is impossible to simulate the on-site work of the water meter, and it is impossible to conduct a comprehensive performance test in combination with the different working conditions actually encountered;

[0009] ④ If only a single PLC control device is used for testing without a corresponding testing system, multiple testing functions cannot be formed

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