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A method for improving the working performance of the main pressure distribution valve used in the governor

A main pressure distribution valve, working performance technology, applied in machine/engine, climate sustainability, sustainable manufacturing/processing, etc., can solve the problem of reducing the working performance of the governor, easy leakage of hydraulic oil, affecting the main pressure distribution valve Work reliability and other issues to achieve the effect of improving good coordination, improving reliability and avoiding wear and tear

Active Publication Date: 2021-06-18
TIANJIN YUANYUAN SYNTHETIC TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Turbine governors mainly include mechanical hydraulic governors, electrohydraulic governors and high oil pressure turbine governors. In order to ensure the good performance of mechanical hydraulic governors, the main pressure distribution Valve to coordinate and control the complete mechanical-hydraulic linkage of the servomotor of the guide vane and the servomotor of the pressure regulating valve. However, the hydraulic oil of the existing main pressure distribution valve is easy to leak during actual use, which affects the reliability of the main pressure distribution valve. , reducing its working performance in the governor

Method used

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  • A method for improving the working performance of the main pressure distribution valve used in the governor
  • A method for improving the working performance of the main pressure distribution valve used in the governor

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Effect test

Embodiment 1

[0037] Embodiment 1: Take the main pressure distribution valve formed by the main distribution piston 20 with a valve disc diameter of 28mm and the main distribution bush 30 matched therewith as an example. In order to improve the reliability of the main pressure distribution valve, reduce the oil leakage of the pressure regulating system in the governor, and improve the performance of the main pressure distribution valve for the governor, all the main components of the main pressure distribution valve meet the above requirements, and The surface roughness of the reference plane A of the main piston valve disc 201 and the reference plane A of the main matching bushing’s mounting hole 301 is 0.4 μm, and the coaxiality of the main piston valve disc 201 relative to its reference plane A is φ0.012mm , the coaxiality of the inner diameter of the main matching bush 30 away from the main matching piston 20 relative to its reference plane A is φ0.012mm.

Embodiment 2

[0038]Embodiment 2: Take the main pressure distribution valve formed by the main distribution piston 20 with a valve disc diameter of 80mm and the main distribution bush 30 matched therewith as an example. In order to improve the reliability of the main pressure distribution valve, reduce the oil leakage of the pressure regulating system in the governor, and improve the performance of the main pressure distribution valve for the governor, all the main components of the main pressure distribution valve meet the above requirements, and The surface roughness of the reference plane A of the main piston valve disc 201 and the reference plane A of the main matching bushing’s mounting hole 301 is 0.4 μm, and the coaxiality of the main piston valve disc 201 relative to its reference plane A is φ0.01mm , and the roundness and cylindricity of the main matching piston valve disc 201 are both 0.004mm, the roundness and cylindricity of the installation hole 301 part of the main matching bus...

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Abstract

The invention provides a method for improving the working performance of a main pressure distribution valve used in a speed governor, which includes the following steps: 1. Machining each component in the main pressure distribution valve to ensure that the main distribution housing, main distribution The dimensional accuracy of the working parts of the piston, the main matching bushing and the main matching gland, and the shape and position accuracy of the main matching shell, main matching piston and main matching bushing of the main pressure distribution valve; The assembly of various parts in the pressure valve makes the installation hole of the main matching shell and the outer wall of the main matching bush adopt the base hole transition fit H7 / k6, and the installation hole of the main matching bush and the main matching piston adopt the base hole system Clearance fit H6 / g5. The present invention adopts the method, and can improve the reliability of the main pressure distribution valve and reduce the The amount of oil leakage when the pressure distribution valve is working, so as to ensure the working performance of the main pressure distribution valve in the governor.

Description

technical field [0001] The invention relates to the technical field of a main pressure distribution valve for a water turbine governor, in particular to a method for improving the working performance of a main pressure distribution valve for a governor. Background technique [0002] In the power system, because electric energy cannot be stored in large quantities, the power generation, power supply and power consumption are completed simultaneously. However, at any time, the power generation, transmission and distribution of the power system and the power consumption of users must maintain a power balance. Among them, power Balance includes active power balance and reactive power balance. Active power balance needs to be realized by the governor of the unit, and the turbine governor is an important unit for active power balance, and its working performance directly affects the operation of the power system. Turbine governors mainly include mechanical hydraulic governors, ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03B15/02F03B11/00B23P15/00
CPCY02E10/20Y02P70/50
Inventor 王士珍
Owner TIANJIN YUANYUAN SYNTHETIC TECH DEV CO LTD
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