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Low-temperature integrated electric ball valve

An electric ball valve, low temperature technology, applied in the field of electric ball valve, low temperature electric ball valve, can solve the problems of sealing failure, abnormal wear of the sealing ring, etc., to reduce the opening torque of the valve port, improve the service life, and avoid the effect of concentrated force

Active Publication Date: 2022-05-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, when the ball valve is opened, there is a concentrated force between the valve port of the ball valve and the sealing ring (soft seal) of the valve seat, which will cause abnormal wear of the sealing ring and cause the seal to fail

Method used

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  • Low-temperature integrated electric ball valve
  • Low-temperature integrated electric ball valve
  • Low-temperature integrated electric ball valve

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Embodiment Construction

[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the embodiments described below are only illustrative and not restrictive.

[0030] Such as figure 1As shown, the low temperature integrated electric ball valve includes: sealing cover 1, axial positioning pressure ring 2, valve stem 3, motor housing 4, motor rotor core 5, motor stator 6, permanent magnet 7, bearing pressure ring 8, ball valve Shell 9, valve seat 10, inlet flange end cover 11, pan-seal sealing ring 12, valve core and valve seat sealing ring 13, valve seat and valve core sealing pre-compression disc spring 14, flange connection surface sealing ring 15, Graphite packing 16, packing sealing pressure ring 17, packing sealing pre-compression disc spring 18, resolver 19, resolver sealing end cover 20, packing sealing pressing end cover 21, bearing end cover 22, valve stem lower end support bearing 23, Ca...

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Abstract

According to the low-temperature integrated electric ball valve, a rotor of a motor, a valve rod and a valve element are integrally designed, the valve rod, the valve element, a motor rotor iron core and a permanent magnet jointly form a motor rotor part, and the motor rotor part is immersed in a fluid medium flowing through the electric ball valve. The motor stator iron core and the winding are isolated from the fluid medium through the sealing cover. And no speed reducing mechanism is arranged between the motor and the valve rod, so that the opening degree of the valve port is controlled more simply and accurately. In order to reduce the size of a driving motor of the electric ball valve, a cam pair mechanism is introduced between a valve rod, a valve element and a valve seat, on one hand, the driving torque needed by rotation of the valve rod can be reduced, on the other hand, a sealing ring attached to the valve element on the valve seat is separated from a valve port through introduction of a cam pair, and concentrated acting force of the sealing ring is avoided; and the service life of the sealing ring is prolonged.

Description

technical field [0001] The invention relates to the field of electric ball valves, and is especially suitable for the field of low-temperature electric ball valves with high control precision and compact space requirements. Background technique [0002] The electric ball valve is a valve that integrates an electric actuator and a ball valve. Through the control of the actuator, it can realize the on-off and flow control of the fluid flow in the pipeline. Electric ball valves can realize the control of remote electrical signals, so they are widely used in industrial automation, oil, natural gas, hydropower, nuclear power, water supply and drainage, heating, aerospace and other industries, and are indispensable products for industrial and national defense construction. . The electric ball valve of the aerospace engine thrust control unit needs to precisely adjust the flow of cryogenic liquid fuel, while the traditional electric ball valve generally consists of a motor and a r...

Claims

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Application Information

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IPC IPC(8): F16K5/06F16K5/20F16K31/04F16K5/08F16K27/08
CPCF16K5/06F16K5/0605F16K31/041F16K5/0663F16K5/0647F16K5/20F16K27/08
Inventor 高晓辉童赛赛刘永光赵哲张佳明
Owner BEIHANG UNIV
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