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Method for improving working performance of main distributing valve applied to speed controller

A main pressure distribution valve, working performance technology, applied in the direction of climate sustainability, machine/engine, sustainable manufacturing/processing, etc. Easy to leak oil and other problems, to achieve the effect of improving good coordination, avoiding wear and improving reliability

Active Publication Date: 2019-05-14
天津市元远合成科技发展有限公司
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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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  • Method for improving working performance of main distributing valve applied to speed controller
  • Method for improving working performance of main distributing valve applied to speed controller

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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 distributing valve applied to a speed controller. The method for improving the working performance of the main distributing valve applied to the speed controller comprises the following steps that 1, mechanical machining of parts in the main distributing valve is performed, the size precision of working portions of a main distributing shell, a main distributing piston, a main distributing bush and a main distributing gland of the main distributing valve is ensured, and the precision of form and position of the maindistributing shell, the main distributing piston and the main distributing bush of the main distributing valve is also ensured; and 2, the parts in the main distributing valve are assembled, so thata mounting hole of the main distributing shell and the outer wall face of the main distributing bush adopt basic hole system transition fit H7 / k6, and a mounting hole of the main distributing bush andthe main distributing piston adopt basic shaft system clearance fit H6 / g5. By the adoption of the method, by controlling the machining precision of the main portions of the piston and the bush of themain distributing valve and the matching precision range of the parts in the main distributing valve, working reliability of the main distributing valve is improved, the oil leakage amount during working of the main distributing valve is reduced, and accordingly the working performance of the main distributing valve in the speed controller is ensured.

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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IPC IPC(8): F03B15/02F03B11/00B23P15/00
CPCY02E10/20Y02P70/50
Inventor 王士珍
Owner 天津市元远合成科技发展有限公司
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