Intelligent disconnecting valve and working method thereof

Abstract

The invention discloses an intelligent disconnecting valve and a working method thereof. The intelligent disconnecting valve is capable of automatically cutting off gas supply to prevent the occurrence of gas safety accidents when the pipeline gas pressure is abnormal. Furthermore, the intelligent disconnecting valve is convenient for maintainers to repair in time, determine the maintenance pointrapidly, and reduce areas of maintenance and gas supply stopping. The intelligent disconnecting valve consists of a valve body and a valve rod. The valve body is provided with a ventilation pipe cavity. An inlet and an outlet are arranged at the left and right ends of the ventilation cavity. The valve body above the ventilation cavity connects a pressure sensor which is electrically connected withthe control circuit. The control circuit is electrically connected with the electromotor and the output shaft of the electromotor is connected with the valve rod by a transmission mechanism.

Description

technical field [0001] The invention relates to a gas shut-off valve, in particular to an intelligent shut-off valve which is automatically closed when the air pressure in the gas pipeline is abnormal. The invention also relates to the working method of the intelligent stop valve. Background technique [0002] At present, the gas pipeline network in most large and medium-sized cities in my country adopts the ring network mode, and small cities adopt the dendritic mode, while the ring network in residential quarters is only put into use when increasing the consumption and maintenance, and generally adopts the dendritic mode for gas supply. The leakage detection of the gas pipeline network and the insufficient gas supply of the pipeline network are mainly solved through the method of institutionalized regular inspections, the method of comparing sub-total meters, and the method of surprise detection reported by the public. This has the following problems: [0003] 1. The sou...

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Problems solved by technology

[0003] 1. The source of danger cannot be eliminated in time, resulting in fire-fighting difficulties;

[0004] 2. The danger source cannot be detected in time and accurately, resulting in long maintenance time;

[0005] 3. The pressure of the pipe network is too low or the pressure is lost, and the gas volume is insufficient. When the residents cannot know the accident in time, they continue to use low-pressure gas, which reduces the combustion value. The gas is stored in the network, causing negative pressure, and the air enters the pipe through the medium such as the stove. network, causing the oxygen content of the pipe network to exceed the standard, resulting in gas safety accidents, and bringing great difficulty to maintenance;

[0006] 4. The pressure of the pipe network exceeds the standard, which proves that the gas pressure regulating station in the community is faulty, forming a medium and low pressure gas channeling network, and the phenomenon of fire pillars in the stoves of residents;

[0007] 5. The detection time is long and the coverage area is large, causing problems for people's livelihood;

[0008] 6. Potential damage is large, causing other urban infrastructure to be affected

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