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Valve test device and method

A technology of a test device and a test method, applied in the field of adjustable valve test devices, can solve problems such as limitation of heating capacity, different working conditions, inability to continuously provide high-flow high-temperature test medium durability test, etc., and achieve the effect of improving test accuracy.

Pending Publication Date: 2020-05-08
NO 711 RES INST CHINA SHIPPING HEAVY IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heated gas test device can better simulate the working conditions of the valve under the condition of stable high-temperature airflow, but it cannot simulate the working conditions of rapid changes in airflow temperature and pressure, and it cannot simulate the vibration situation. At the same time, the flow rate and temperature of high-temperature medium It is easy to be limited by the heating capacity of the heating device, and cannot continuously provide a large flow of high-temperature test medium for durability tests
[0006] Therefore, the above two high-temperature test devices are difficult to investigate the valve performance and reliability in the engine design stage, which are different from the actual working conditions of the adjustable supercharging system for the engine.

Method used

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  • Valve test device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Open the switch valve 12 of the branch pipe, close the switch valve 9 of the lead pipe, start the single-cylinder engine 1, control the switch of the test valve 7 through the actuator of the test valve 7, and check the action and reliability of the test valve.

[0057] By adjusting the operation of the single-cylinder engine 1 and the opening of the valve 3, the temperature and pressure in front of the valve can be adjusted, and the operating conditions of the test valve can be changed:

[0058] If it is necessary to increase the working temperature, pressure and flow rate of the valve, the operating efficiency of the single-cylinder engine 1 can be increased. The greater the power of the single-cylinder engine, the more fuel it burns per unit time, and the greater the air volume required for fuel combustion. The single-cylinder engine Exhaust flow, temperature and pressure will also increase; if the operating temperature, pressure and flow of the valve need to be reduce...

Embodiment 2

[0062] Open the branch pipe switch valve 12, close the lead pipe switch valve 9, and open the test valve 7 to start the single-cylinder engine 1;

[0063] By adjusting the operating condition of the single-cylinder engine 1 and the opening of the regulating valve 3, the temperature and pressure in front of the valve can be adjusted, and the operating condition of the test valve can be changed. If the operating temperature, pressure and flow of the valve need to be increased, the operating condition of the single-cylinder engine 1 can be improved. , while appropriately reducing the opening of the regulating valve 3. If it is necessary to reduce the working temperature, pressure and flow of the valve, the operating condition of the single-cylinder engine 1 can be reduced, and the opening of the regulating valve 3 can be appropriately increased.

[0064] According to the difference between the measured values ​​of the first pressure sensor 6 and the second pressure sensor 8, the ...

Embodiment 3

[0066] Close the test valve and the branch pipe switch valve 12, open the lead pipe switch valve 9, and start the single-cylinder engine 1;

[0067] By adjusting the operating conditions of the single-cylinder engine 1, the temperature and pressure before the valve can be changed. If the operating temperature, pressure and flow of the valve need to be increased, the operating conditions of the single-cylinder engine 1 can be improved, and the opening of the regulating valve 3 can be appropriately reduced. If it is necessary to reduce the working temperature, pressure and flow of the valve, the operating condition of the single-cylinder engine 1 can be reduced, and the opening of the regulating valve 3 can be appropriately increased;

[0068] Use the flow test device 11 to test the valve leakage.

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Abstract

The invention relates to a valve test device in the technical field of valves. The valve test device comprises an engine, an exhaust main pipe, an exhaust branch pipe and a test valve, wherein the exhaust main pipe is in communication with an exhaust port of the engine, an adjusting valve is installed on the exhaust main pipe, the exhaust branch pipe is in communication with the exhaust main pipe,the test valve is installed on the exhaust branch pipe, and a branch pipe switch valve is installed at the tail end of the exhaust branch pipe. The invention further provides a valve test method. Thetest device can simulate the actual use state of the engine and an adjustable pressurizing system valve, the large-flow high-temperature gas with pressure fluctuation is circulated in the pipeline, the front-back temperature difference of the valve changes several hundred degrees Celsius within a few minutes when the valve is closed, the vibration condition exists in the installation position ofthe valve, and the function and the reliability of the valve in the actual use state can be verified.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a valve test device and method, in particular to an adjustable valve test device and method. Background technique [0002] Engine adjustable supercharging technology is a new technology, adjustable supercharging system (including two-stage supercharging system, sequential supercharging system, etc.) is an important way to improve the performance of the engine under all working conditions. The adjustable supercharging system controls the number of superchargers put into operation through valves, so as to realize the optimal matching between the actual intake air volume of the engine and the required intake air volume. For example, a sequential supercharging system including two superchargers needs to install a valve on the turbine and compressor pipelines of one of the superchargers to control whether the supercharger is put into operation. The high-temperature valve installed in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/22F02B39/16G01M15/04
CPCF02B37/225F02B39/16G01M15/04Y02T10/12
Inventor 陈晓轩黄立王新权金玉山王先锋胡志龙
Owner NO 711 RES INST CHINA SHIPPING HEAVY IND GRP
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