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Solenoid valve for gas automatic cutting in emergency

An automatic cut-off and solenoid valve technology, applied in the field of solenoid valves, to achieve fast valve closing speed, prevent sparks, and ensure air tightness and safety

Active Publication Date: 2008-02-20
欧好光电控制技术(上海)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the emergency automatic cut-off valve is opened and closed, before opening the valve, professionals should go to the site to conduct a safety inspection and eliminate possible accident hazards before manually opening and restoring the gas supply. Mistaken opening of the gas valve will lead to fatal consequences

Method used

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  • Solenoid valve for gas automatic cutting in emergency
  • Solenoid valve for gas automatic cutting in emergency
  • Solenoid valve for gas automatic cutting in emergency

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Embodiment Construction

[0055] Please refer to the accompanying drawings for a further description of the present invention.

[0056] As shown in Fig. 1 the schematic diagram of the appearance structure of the present invention, Fig. 2 the principle circuit diagram of the control assembly of the present invention and Fig. 4 the structural schematic diagram of the manual opening assembly of the present invention, the present invention provides a gas emergency automatic cut-off solenoid valve, control assembly 1 is that the circuit board is placed in the potting box and formed by potting with cured potting glue. The control component 1 meets the requirements of potting explosion-proof, does not generate sparks and has the function of moisture-proof and shock-proof, which improves the reliability of the circuit board. The control component 1 is put into the valve body shell 2, and the shell cover connects the control component 1 and the valve body shell 2 together with screws and sealing materials, which...

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Abstract

The invention relates to an emergent automatic gas cut-off solenoid valve. A control assembly is connected with the case of the valve body, an actuator is arranged in the case of the valve body, a valve plug is arranged in the actuator; a solenoid is arranged in the valve plug and a mandrel vertically runs through the actuator, the top of the mandrel is fixed with a hand-operated opening assembly by the thread; a hole for the control assembly indicator is arranged on the case of the valve body, the control assembly is controlled by the external signal and the power signal and outputs the On / Off signal of the valve and the signals are displayed by the control assembly indicator. The invention has the advantages that three valve cut-off modes can be provided, which are automatic cut-off in power outage, automatic cut-off by externally-controlled contact and manual cut-off; the valve cut-off speed is high, the gas supply can be cut off within one second; the valve can be cut off automatically by an electric mode aiming at the different kinds of detected emergent cases on gas safety, which includes but not limited to the power outage; the manual opening can keep the open state without dynamic power.

Description

technical field [0001] The invention relates to a solenoid valve, in particular to a gas emergency automatic cut-off solenoid valve installed on an urban gas pipeline. Background technique [0002] At present, the gas automatic cut-off solenoid valve installed on the urban gas pipeline has an external electric control box, and the valve opening button of the external electric control box is not well managed, which will cause fatal false closing / opening actions. The opening of this type of valve must be continuously energized, and the temperature rises after long-term energization, which may easily cause damage to the electromagnetic coil, and is also easily affected by the fluctuation of the power supply voltage, causing the valve to be closed by mistake, which brings difficulties to management. The most effective manual intervention to prevent the valve from being opened by mistake is: only allow manual opening through the manual device of the valve itself. Once the emerge...

Claims

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Application Information

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IPC IPC(8): F16K31/11
Inventor 张乾华欧立元廖原
Owner 欧好光电控制技术(上海)股份有限公司
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