Measuring device for performance test of precision bushing valve assembly
A measuring device and valve technology, which is applied in the direction of measuring device, testing of mechanical parts, testing of machine/structural parts, etc., can solve the problem of time-consuming and laborious hydraulic performance inspection, shorten the production cycle of products, improve product quality, and improve reliability. sexual effect
Active Publication Date: 2018-08-24
XIAN AERO ENGINE CONTROLS
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Problems solved by technology
[0009] Therefore, the inspection of the hydraulic performance of the existing precision bushing valve couple is time-consuming and laborious
Method used
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Embodiment Construction
[0045] According to the requirements of the hydraulic performance test, a certain pressure of hydraulic oil is input into the inlet of the inspected precision bushing valve couple (hereinafter referred to as the inspected couple) to adjust the zero point of the valve, that is, the valve must meet the initial position requirements specified in the test program at this point. The pressure difference of the measured point satisfies a constant value. At this time, move the valve, observe and record the flow change of the measured point, and establish the relationship curve between the valve stroke and the flow change; or the hydraulic test program stipulates that when the valve is in a certain position relative to the bushing When this point is zero, install a throttle nozzle in the oil inlet pipeline to feed hydraulic oil with a certain pressure (that is, a constant flow of oil) according to the test requirements. With the movement of the valve, record the pressure value of the mea...
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The invention discloses a measuring device for the relationship between the stroke of the valve and the flow / pressure of the pair of precision bushing valves, which comprises an adjusting nail, a stroke measuring instrument and a piston adjusting piece; Adjusting the nail body, the adjusting nail body is rod-shaped; the stroke measuring instrument includes a measuring rod; the piston adjustment member includes a piston seat and a piston seat support member; the precision bush valve pair includes a valve and a bush sleeved on the valve, The bushing is sleeved with a housing; the housing is provided with an oil inlet and an oil outlet, and the left side of the piston seat is connected to the right end of the valve; the nail cap of the adjusting nail is in contact with the measuring rod of the stroke measuring instrument ; The adjustment nail faces the left end of the housing; the oil inlet and the oil outlet of the housing are respectively connected with pipelines. The invention can not only reduce the difficulty of performance debugging of the whole product, but also help to improve product quality, greatly reduce the difficulty of troubleshooting of the regulator, and shorten the production cycle of the product.
Description
technical field [0001] The invention belongs to a mechanical adjustment device, and in particular relates to a measuring device for the relationship between the valve stroke of a precision bush valve pair and the flow / pressure of the pair. Background technique [0002] The regulator of aviation hydraulic machinery products is composed of control mechanism, command mechanism, executive mechanism and other components. Each mechanism has a set of precision bushing valve parts. The precision coupler is called the command valve bushing assembly, and the precision coupler of the actuator is called the executive valve bushing assembly. The precision couplers with different functions are all determined by the relationship between the valve stroke under a certain pressure and the flow rate of the coupler measuring point or It is realized by the relationship between the valve stroke under a certain flow rate and the pressure of the detection point of the coupling, that is to say, only...
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IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 张辉王彦禹婕张晓辉王彦鹏郝禹侯晓军韩鑫
Owner XIAN AERO ENGINE CONTROLS