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Bidirectional pilot-operated type pressure regulating valve

A pressure regulation and pilot pressure technology, applied in the field of pressure regulation, can solve the problems of inability to meet the needs of use, affecting the reliability of the system, easy failure of seals, etc., so as to reduce the number of pipeline accessories and seals, and reduce the number of pipelines. And the number of seals, the effect of a wide range of pressure use

Active Publication Date: 2019-04-19
XIAN AERO ENGINE CONTROLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reversing installation method is bound to seriously increase the workload in the hydraulic system with frequent reversing or cannot meet the actual use requirements at all; if you choose a rectified hydraulic bridge, you need to configure at least 4 one-way valves and 1 safety valve to realize this function. And 1 pressure regulating valve, the system is complex and there are many seals, especially for the hydraulic system with high pressure due to the huge pressure shock caused by frequent reversing, the seals are prone to failure, which affects the reliability of the system

Method used

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  • Bidirectional pilot-operated type pressure regulating valve
  • Bidirectional pilot-operated type pressure regulating valve
  • Bidirectional pilot-operated type pressure regulating valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] 1. The leaking two-way pilot pressure regulating valve is used in the two-way conjoined pump motor system

[0026] Specifications: 15mm

[0027] Working medium: diesel engine oil 15W / 40CD;

[0028] Medium temperature: room temperature -80°C;

[0029] Safety valve opening pressure setting: 52.5MPa

[0030] Debug data logging

[0031] Table 1: Flow Characteristics

[0032]

[0033] Table 2: Leakage Test

[0034]

[0035]

[0036] The valve has been used for more than 450 hours since 2010 on a conjoined pump motor test bench after passing the debugging.

[0037] 2. Leakage two-way pilot pressure regulating valve 2 is used in two-way conjoined pump motor system

[0038] Specifications: 18mm

[0039] Working medium: diesel engine oil 15W / 40CD;

[0040] Medium temperature: room temperature -80°C;

[0041] Safety valve opening pressure setting: 51.9MPa

[0042] Debug data record table

[0043]

[0044]

[0045] The valve has been used for more than 200 ...

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Abstract

The invention belongs to the technical field of pressure adjustment, and particularly relates to a bidirectional pilot-operated type pressure regulating valve. The pressure regulating valve comprisesa high-pressure selecting valve, a pilot pressure adjusting mechanism and a main valve. An oil patch A and an oil path B connected with an external hydraulic system are formed in the main valve, and communicate with inlets in the two ends of the high-pressure selecting valve correspondingly, and an outlet of the high-pressure selecting valve communicates with the pilot pressure adjusting mechanism. The bidirectional pilot-operated type pressure regulating valve is simple in structure and high in reliability.

Description

technical field [0001] The invention belongs to the technical field of pressure regulation, in particular to a two-way pilot pressure regulating valve. Background technique [0002] Pressure regulating valves are widely used in hydraulic systems, especially when testing and adjusting hydraulic systems, pressure regulating valves are essential. The existing pressure regulating valve of the hydraulic system is a one-way pressure regulating valve, which is used in two-way hydraulic pumps, two-way hydraulic motors, two-way hydraulic cylinders and two-way hydraulic control modules / circuits. The pressure regulating valve is reversingly installed, or a corresponding hydraulic bridge is designed, and the pressure is adjusted after rectification. The reversing installation method is bound to seriously increase the workload in the hydraulic system with frequent reversing or cannot meet the actual use requirements at all; choose a rectified hydraulic bridge, at least 4 one-way valves ...

Claims

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Application Information

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IPC IPC(8): F16K11/07F16K17/04F16K17/06F16K17/10
CPCF16K11/0708F16K17/048F16K17/06F16K17/10
Inventor 范惠元田浩玲李玉峰刘帅李鹏飞王凡
Owner XIAN AERO ENGINE CONTROLS
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