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Water meter abrasion test device and method

A wear-resistant test, water meter technology, applied in testing/calibrating devices, measuring devices, testing/calibrating volume flow, etc., can solve the problem of high temperature of the test device

Pending Publication Date: 2020-10-30
辽宁省计量科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the experimental device can carry out two sets of water meter wear tests with different time sequences at the same time under the same output power and working hours of the water pump 13, the number of water meters in the water meter wear test is doubled, which improves energy utilization efficiency and detection efficiency, and solves the problem of wear and tear during the wear test. The problem of the temperature of the test device being too high

Method used

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  • Water meter abrasion test device and method
  • Water meter abrasion test device and method
  • Water meter abrasion test device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The common flow Q of water meter to be tested in the present embodiment 3 same.

[0032] The working process of the water meter wear test device and method is: the water meter to be tested is installed on the water meter installation mechanism 36, after ensuring that the connection of the water meter to be tested does not leak, the water pump 13 is started, and the flow regulating valve 22 is in the maximum open state, Turn all the on-off valves 38 in the branch waterway group 3 to the open state, and adjust all the fine-tuning flow valves 32 in the branch waterway group 3 to the 3 / 4 opening state; turn on the on-off valves 38 of each branch waterway in turn (other branch waterway keep the water blocked), and adjust the opening degree of the fine-tuning flow valve 32, so that when each branch waterway is connected separately, the indication value of the standard meter 42 is the same; The waterway is equally divided into two groups (group A and group B), the on-off valv...

Embodiment 2

[0034] In this embodiment, the water meter to be tested is the common flow Q 3 Two different specifications of the water meter to be tested, the larger common flow rate of the two specifications of the water meter to be tested is Q 3max , the smaller common flow rate is Q 3min .

[0035] The working process of the water meter wear test device and method is: the water meter to be tested is installed on the water meter installation mechanism 36, and the straight water pipe replacing the water meter is installed in the water meter installation mechanism 36 on the waterway that is not connected to the water meter. The common flow rate is Q 3max The number of branch waterways where the test water meter is located is N max , the usual flow rate is Q 3min The number of branch waterways where the test water meter is located is N min , the number of waterways reserved for unconnected water meters is N 3 , Nmax +N min +N 3 =2N, after ensuring that there is no water leakage at the...

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Abstract

The invention discloses a water meter abrasion test device and method. The device comprises a water source power part, a flow adjusting and dividing part, a branch water path set, a confluence backflow part and an upper computer, wherein water flow output by a water pump passes through a pressure stabilizing tank and a flow adjusting valve and then is divided into 2N branch water ways for installing to-be-measured water meters, the 2N branch water ways are divided into two groups, and through the control of the upper computer, the switching valves of the two groups of branch waterways are switched according to a duty ratio of 1:1 and the same switching frequency, the switching valves in each group have the same switching state, and the states of the switching valves in the two groups are kept opposite. According to the invention, two groups of water meter intermittent flow abrasion tests are simultaneously carried out under the condition that the output power of a water pump is not changed, the limitation of whether the common flow of the water meters is the same is avoided, and the water circulation is not stopped in the intermittent flow abrasion test process; and the energy utilization efficiency and the test efficiency are improved, water pump output energy is prevented from being converted into water heat energy, and the problems of potential safety hazards and energy waste caused by over-high water temperature in a water meter abrasion test are solved.

Description

technical field [0001] The invention belongs to the field of flow measurement, and relates to a water meter wear test device and method. Background technique [0002] As an important water consumption measuring instrument, water meter plays an important role in industrial production and people's life. Its measurement performance determines the accuracy and reliability of water trade settlement. In order to assess the reliability of the water meter for a long time, it is necessary to carry out a wear test on the water meter, and test the metering performance of the water meter after the wear test. [0003] According to the durability test requirements in JJF1777-2019 "Drinking Cold Water Meter Type Evaluation Outline", the water meter not only needs to undergo a long-term continuous flow wear test, but also a long-term intermittent flow wear test. The current water meter wear test device realizes discontinuous flow by controlling the opening and closing state of the valve to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
CPCG01F25/10
Inventor 韩博陈梅
Owner 辽宁省计量科学研究院