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Manual and automatic control system for realizing single-action control through pneumatic double-action executing mechanism with gas storage tank

An automatic control system and actuator technology, which is applied to the safety of fluid pressure actuation systems, components of fluid pressure actuation systems, and mechanical equipment. Easy operation, simple control, high reliability effect

Active Publication Date: 2013-07-17
ZHEJIANG ZHONGDE AUTOMATIC CONTROL VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the valve diameter is large or the working pressure is high, due to the large force required for the opening and closing of the valve, a pneumatic single-acting spring-return actuator with a large output force must be used, and the pneumatic single-acting spring-return actuator with a large output force has a larger volume. Large, it does not match the appearance of the valve itself, and the cost is high. In addition, because the internal spring of the single-acting actuator is compressed for a long time, it is easy to cause the spring to fail, so that the output force of the spring is not enough, and the valve cannot be opened or closed. Strict phenomenon

Method used

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  • Manual and automatic control system for realizing single-action control through pneumatic double-action executing mechanism with gas storage tank
  • Manual and automatic control system for realizing single-action control through pneumatic double-action executing mechanism with gas storage tank
  • Manual and automatic control system for realizing single-action control through pneumatic double-action executing mechanism with gas storage tank

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Experimental program
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Effect test

Embodiment 1

[0023] refer to figure 1, the pneumatic double-acting control valve of the present invention realizes the F.C manual automatic control system, including a valve 1, a pneumatic double-acting actuator 2, a first air control valve 3, a second air control valve 4, a solenoid valve 5, and a pressure switch 6 (for possible adjustable pressure switch), on-site manual control panel 7, air filter decompression assembly 8, one-way valve 9, air storage tank 10, third air control valve 11, fourth air control valve 12, fifth air control valve 13. The valve 1 and the pneumatic double-acting actuator 2 form a pneumatic control valve, the first air control valve 3, the second air control valve 4, the solenoid valve 5, the pressure switch 6, the on-site manual control panel 7, the air filter decompression Assembly 8, one-way valve 9, gas storage tank 10, third air control valve 11, fourth air control valve 12, fifth air control valve 13, and several air pipelines and ferrule joints form a manu...

Embodiment 2

[0026] refer to figure 2 , the pneumatic double-acting control valve of the present invention realizes the F.O manual automatic control system, including a valve 1, a pneumatic double-acting actuator 2, a first air control valve 3, a second air control valve 4, a solenoid valve 5, and a pressure switch 6 (for possible adjustable pressure switch), on-site manual control panel 7, air filter decompression assembly 8, one-way valve 9, air storage tank 10, third air control valve 11, fourth air control valve 12, fifth air control valve 13. its connection with figure 1 Similarly, the difference is that the normally closed port P of the second air control valve 4 is connected to the branch of the three-way ferrule joint between the fourth air control valve 12 and the third air control valve 11, and the normally open port P of the second air control valve 4 Port R is equipped with a silencer and communicates with the atmosphere. The normally open port R of the fourth air control va...

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Abstract

The invention discloses a manual and automatic control system for realizing single-action control through a pneumatic double-action executing mechanism with a gas storage tank, comprising a pneumatic double-action control valve, a manual and automatic control system and an accident gas storage tank, wherein the pneumatic double-action control valve is formed by a valve and a pneumatic double-action executing mechanism through connection; the manual and automatic control system comprises a first pneumatic control valve, a second pneumatic control valve, a solenoid valve, a pressure switch, a field manual control panel, an air filtration pressure-reduction component, a one-way valve, a third pneumatic control valve, a fourth pneumatic control valve and a fifth pneumatic control valve. According to the control system, the control valve can realize remote control and the field manual control, and effectively prevents the valve fault caused by various faults of a field hand wheel device; and besides, the accident gas storage tank is additionally arranged in the control system, so that the interlocking action of the valve can be realized when the valve gas source fault is controlled, and the phenomenon that the valve cannot be switched on or switched off tightly due to long-time use of the pneumatic single-action executing mechanism.

Description

【Technical field】 [0001] The invention relates to the technical field of a manual automatic control system for pneumatic control valves, and is particularly suitable for industrial automatic control of large-diameter valves or the technical field of short stroke time and requiring remote automatic control and on-site manual control. 【Background technique】 [0002] Most of the on-site manual control of the existing pneumatic control valve is realized by adding a handwheel device to the pneumatic actuator part. However, the hand wheel device generally adopts gear transmission, resulting in a slower speed of opening and closing the valve. Before the operation of the handwheel device, it is necessary to confirm that the automatic control part is completely switched to the manual operation state. The process is relatively complicated, and it is often damaged due to improper operation of the on-site personnel. Furthermore, since the pneumatic single-acting actuator has a spring i...

Claims

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Application Information

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IPC IPC(8): F15B13/02F15B20/00F15B21/08
Inventor 粟飞骆群华
Owner ZHEJIANG ZHONGDE AUTOMATIC CONTROL VALVE
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