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Fireproof emergency turn-off hydraulic control system

A technology of controlling the system and shutting off electricity, applied in the direction of servo meter circuit, valve details, multi-way valve, etc., can solve the problems of hidden dangers of personnel, safety accidents, difficult operation, etc., and achieve the effect of high safety

Pending Publication Date: 2022-04-19
XIAN AEROSPACE PROPULSION INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The site of the oil depot is usually inspected regularly by the staff, and the remote control valve is notified to the central control room when an unexpected situation is found. If the staff fails to detect and control it in time when a fire occurs, or there are too many oil tanks in the tank area, it takes time to close them one by one. Every minute and every second may cause a bigger security incident
In addition, the fire scene is often accompanied by the failure of the power supply system. At this time, it is necessary to manually close the valve at the scene, which has great hidden dangers to the safety of personnel, and it is often impossible to close the valve in time due to difficult operation.

Method used

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  • Fireproof emergency turn-off hydraulic control system
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  • Fireproof emergency turn-off hydraulic control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see figure 1 As shown, the control system of the present invention includes an accumulator, a first control valve, a second control valve, a third control valve, a fourth control valve, a multi-way fire prevention and pressure relief valve, an oil circuit connected to the upper chamber of the executive oil cylinder, a connection Execute the oil circuit in the lower chamber of the cylinder and the oil return circuit connected to the oil tank;

[0038] Among them, the accumulator is connected to the oil circuit connected to the upper chamber of the executive cylinder through the multi-way fire prevention pressure relief valve to form a fire prevention oil circuit;

[0039] The accumulator is connected to the oil circuit connected to the upper chamber of the actuator cylinder through the first control valve to form a first oil circuit, and the oil circuit connected to the upper chamber of the actuator cylinder passes through the first hydraulic control check valve, multi-w...

Embodiment 2

[0046] On the basis of the scheme of Embodiment 1, the first control valve and the second control valve in the control system of this embodiment are electromagnetic control valves, and the first control valve is closed when it is powered on, and it is opened when it is powered off, and the second control valve is closed when it is powered on. In this state, the first control valve and the second control valve are always energized. In case of a circuit failure, the first control valve is opened and the second control valve is closed, that is, the first oil circuit is opened. , Turn off the second oil circuit, the high-pressure oil in the accumulator enters the upper chamber of the actuator cylinder through the first oil circuit, the high-pressure oil in the first oil circuit opens the second one-way hydraulic control valve to open the fourth oil circuit, and the actuator cylinder The hydraulic oil in the lower chamber returns to the oil tank through the fourth oil circuit. Unde...

Embodiment 3

[0049] On the basis of the above-mentioned embodiments, the control system of this embodiment is provided with a reversing valve, such as a manual reversing valve, which is set in the fire prevention oil circuit or / and the first oil circuit, and the reversing valve It is connected to the oil return line connected to the oil tank. The reversing valve is a multi-way two-position valve. In one state, the passage in the valve located on the fire prevention oil passage or / and the first oil passage is opened, and the passage in the valve connected to the oil tank is closed. , does not affect the above-mentioned working process of the overall control system. After a fire or emergency shutdown of the controlled valve, the reversing valve can be switched to another state, that is, the passage in the valve located on the fire prevention oil circuit or / and the first oil circuit is closed. , the passage in the valve connected to the oil tank is opened, so that the controlled valve can be o...

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Abstract

The invention discloses a fireproof emergency turn-off hydraulic control system. According to the disclosed scheme, the system comprises an energy accumulator, a first control valve, a second control valve, a third control valve, a fourth control valve, a multi-way fireproof pressure release valve, an oil way connected with an upper cavity of an execution oil cylinder, an oil way connected with a lower cavity of the execution oil cylinder and an oil return way connected with an oil tank. All the valves are connected to form a fireproof oil way and a plurality of control oil ways. The fireproof release valve is arranged in an oil way of the hydraulic system, and when a fire disaster occurs, the valve element is opened after unbalanced stress, and the oil way is automatically communicated to achieve valve closing; the fireproof release valve can automatically sense the environment temperature when a fire occurs, the valve can be automatically closed no matter an accident site is powered on or powered off, and once the environment reaches the dangerous temperature, the safety is very high.

Description

technical field [0001] The invention relates to electro-hydraulic actuator control technology, and relates to a fire-proof emergency shutdown electro-hydraulic control system, which can be applied to shut-off valves in oil depots and tank farms, and can automatically close the valves in emergency situations such as fire and power failure. Background technique [0002] In the prior art, the electro-hydraulic actuators applied to the tank root valve mostly use solenoid valves to control the hydraulic oil circuit. The solenoid valve receives the control signal from the central control room to open or close to connect the hydraulic oil circuit, so that the high-pressure oil enters the hydraulic cylinder. cavity to drive the valve to open or close. [0003] The site of the oil depot is usually inspected regularly by the staff, and the remote control valve is notified to the central control room when an unexpected situation is found. If the staff fails to detect and control it in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/122F15B11/08F15B1/02F15B13/04F16K11/065
CPCF16K31/122F15B11/08F15B1/022F15B13/0402F15B13/024F16K11/065F15B2013/041F15B2211/20515F15B2211/20576F15B2211/212
Inventor 蔡婧王丽然王波井健陈诗洋孙岭聂国清
Owner XIAN AEROSPACE PROPULSION INST
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