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Adjustment control system with on-site and remote switching operation

A technology of regulating control and remote switching, which is applied in the direction of valve operation/release devices, valve details, engine components, etc., which can solve the problems of inability to adjust the valve opening and single applicable occasions, and achieve stable opening and closing, and smooth opening and closing work Effect

Pending Publication Date: 2021-08-03
ZHEJIANG ZHONGDE AUTOMATIC CONTROL VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing technical solutions, it is impossible to adjust the opening of the valve, and the applicable occasions are single

Method used

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  • Adjustment control system with on-site and remote switching operation
  • Adjustment control system with on-site and remote switching operation
  • Adjustment control system with on-site and remote switching operation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 and 2 As shown, a regulating control system with on-site and remote switch operations includes a pneumatic double-acting control valve and an air source. The pneumatic double-acting control valve includes a connected valve body 10 and a pneumatic double-acting actuator 1; it also includes An adjustment control system, an opening and closing control system and a switching system, the adjustment control system and the opening and closing control system are connected in parallel between the pneumatic double-acting control valve and the air source, the adjustment control system and the opening and closing The control system is switched by the switching system to drive the pneumatic double-acting control valve to adjust the opening degree or switch control.

[0038] Further, the switching system includes a second air control valve 41, a third air control valve 42 and a first solenoid valve 43, the air inlet of the first solenoid valve 43 is connected to the...

Embodiment 2

[0051] Such as image 3 , 4 As shown, the parts that are the same as or corresponding to the first embodiment adopt the reference numerals corresponding to the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below: the differences between the second embodiment and the first embodiment at:

[0052] In this embodiment, the opening and closing control system includes a second electromagnetic valve 7, the air inlet of the second electromagnetic valve 7 is connected to the air source, and the air outlet E of the second electromagnetic valve 7 is connected to the second The normally closed port P of the air control valve 41 and the air outlet F of the second solenoid valve 7 are connected to the normally closed port P of the third air control valve 42 .

[0053] Further, the first electromagnetic valve 43 adopts a two-position three-way direct-acting single solenoid valve, the air inlet of the first electromagnetic valve 4...

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PUM

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Abstract

The invention provides an adjustment control system with on-site and remote switching operation. The adjustment control system comprises a pneumatic double-acting control valve and an air source, the pneumatic double-acting control valve consists of a valve body and a pneumatic double-acting actuating mechanism which are connected with each other, and the adjustment control system is characterized by further comprising an adjustment control system body, an on-off control system and a switching system. The adjustment control system body and the opening and closing control system are connected between the pneumatic double-acting control valve and the air source in parallel, and the adjustment control system body and the opening and closing control system are switched through the switching system so as to drive the pneumatic double-acting control valve to adjust the opening degree or control opening and closing. A positioner is arranged to receive remote electric control information and convert an information instruction into flow changes of a first outlet and a second outlet, so that the gas flow difference is obtained in an upper air cylinder and a lower air cylinder, a piston in the pneumatic double-acting actuating mechanism is driven to conduct fine adjustment, the opening degree of the valve body is adjusted, and the technical problem that the opening degree of the valve cannot be adjusted, and the application occasion is single is solved.

Description

technical field [0001] The invention relates to the technical field of automatic control of pneumatic control valves, in particular to an adjustment control system with on-site and remote switch operations. Background technique [0002] At present, with the rapid development of industry, the requirements for valves are getting higher and higher, especially for the automatic control of valves. Each valve must have the function of automatically adjusting the valve position. [0003] The double-acting pneumatic device includes a valve and a double-acting actuator that controls the opening and closing of the valve body. The double-acting actuator includes a piston chamber installed on the valve and an airflow control mechanism that controls the airflow in and out of the piston chamber. The valve rod, the piston chamber is provided with a piston rod that is driven by the air flow and is linked with the valve rod to open and close the valve. The conventional air flow control mech...

Claims

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Application Information

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IPC IPC(8): F16K31/122
CPCF16K31/122
Inventor 粟飞骆群华洪卫聂慧磊陈维熊
Owner ZHEJIANG ZHONGDE AUTOMATIC CONTROL VALVE