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Testing method of flow ratio valve feature curve

A flow proportional valve and characteristic curve technology, which is applied in the field of flow proportional valve characteristic curve testing, can solve problems such as economic loss, low work efficiency, and high labor intensity, so as to ensure quality, improve work efficiency, and prevent misjudgment. Effect

Active Publication Date: 2007-04-18
ZHEJIANG CHUNHUI INTELLIGENT CONTROL
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In this way, not only the work efficiency is low, but also the labor intensity is high, and misjudgment is prone to occur, resulting in certain economic losses.

Method used

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  • Testing method of flow ratio valve feature curve
  • Testing method of flow ratio valve feature curve

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Embodiment Construction

[0011] The equipment used in the present invention mainly includes a test platform and a flow test device. The test platform is composed of accumulator 2 with ball valve 1 and pressure gauge 3, pressure regulator 4 with pressure gauge 3, flow test device 5, flow meter 7, back pressure controller 8, data acquisition module 9, sampling resistor 10, driven Circuit 11, industrial computer 12 with display 13, etc. constitute; the flow test device consists of a lower valve seat 24 with a fixed bracket 16, a guide rod 19 placed on the top of the fixed bracket 16 and a cylinder 17 with a piston rod 22, fixed on the piston rod 22 The upper valve seat 15 with the inlet joint 14 and the exhaust joint 20 at the lower end is composed of an end face sealing gasket 21 placed between the upper valve seat 15 and the lower valve seat 24; the accumulator 2, the pressure regulator 4, The inlet joint 14 and the exhaust joint 20 on the flow test device 5, the flow meter 7, and the back pressure con...

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Abstract

The invention relates to flow proportional valve characteristic curve testing method. It uses air as test medium on test platform, changes the current of the flow proportional valve coil to change valve port opening and flow, displays current and flow characteristic curve relationship of the flow proportional valve coil while testing. It firstly tests two standard valves which respectively have maximum and minimum flow at the same current and qualified range, displays characteristic curve interval tested by the standard valve on the display; if the characteristic curve of the tested flow proportional valve is in the interval, the product is qualified. The invention replaces traditional liquid by air as test medium which can greatly increase work efficiency, improve labor strength, uneasily occur justice failure, and effectively ensure product quality.

Description

technical field [0001] The invention relates to a method for testing characteristic curves of flow proportional valves, which belongs to the technical field of assembly and testing of flow proportional valves. Background technique [0002] The flow proportional valve is an electromagnetic flow valve that obtains a stepless output fluid flow through the input solenoid valve coil current. The output flow is stepless output with the magnitude of the coil input current. The characteristic of the output is the flow curve changing within a certain interval. At present, the characteristic curve test of the flow proportional valve generally uses liquid as the medium, and the fluid is directly passed through the inlet and outlet chambers of the flow proportional valve, and the voltage or current is directly graded and input to the coil through manual adjustment. Each time a voltage or current is input, a flow value is recorded, and then the recorded value is ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M19/00G01D21/00G01M99/00
Inventor 黄安林贝正其唐善鑫裴文徐桢祥杜剑明吴国强
Owner ZHEJIANG CHUNHUI INTELLIGENT CONTROL
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