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Intercepting valve for natural gas wellhead and use method thereof

A shut-off valve, natural gas technology, applied in the field of shut-off valves

Inactive Publication Date: 2019-01-18
豆群儒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current cut-off valve cannot effectively cut off the flow of gas after it breaks during the transportation of natural gas pipelines. Those skilled in the art hope to provide a valve that can effectively cut off the flow of gas after the pipeline is broken.

Method used

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  • Intercepting valve for natural gas wellhead and use method thereof
  • Intercepting valve for natural gas wellhead and use method thereof
  • Intercepting valve for natural gas wellhead and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, a cut-off valve for a natural gas wellhead includes a valve body 1, an air inlet pipe 2 connected to the air inlet of the valve body, and an air outlet pipe 3 connected to the air outlet of the valve body. The valve body 1 is provided with Electric cylinder 4, a push plate 5 is arranged under the piston rod of the electric cylinder 4, and the push plate 5 is connected with the piston rod bolt of the electric cylinder 4, and an upper cavity 6 is formed on the left side of the push plate 5. The right side of push plate 5 forms lower cavity 7, and the air outlet of described upper cavity 6 is positioned at the air inlet below lower cavity 7, and described push plate 5 is provided with below the air outlet that matches with upper cavity 6. The valve core 8 is fixedly connected with the push plate 5, the pressure sensor 9 is arranged in the outlet pipe 3, the pressure sensor 9 is fixedly connected with the outlet pipe 3, and the valve body 1 is pro...

Embodiment 2

[0033] Such as Figure 1-4 As shown, a cut-off valve for a natural gas wellhead includes a valve body 1, an air inlet pipe 2 connected to the air inlet of the valve body, and an air outlet pipe 3 connected to the air outlet of the valve body. The valve body 1 is provided with Electric cylinder 4, a push plate 5 is arranged under the piston rod of the electric cylinder 4, and the push plate 5 is connected with the piston rod bolt of the electric cylinder 4, and an upper cavity 6 is formed on the left side of the push plate 5. The right side of push plate 5 forms lower cavity 7, and the air outlet of described upper cavity 6 is positioned at the air inlet below lower cavity 7, and described push plate 5 is provided with below the air outlet that matches with upper cavity 6. The valve core 8 is fixedly connected with the push plate 5, the pressure sensor 9 is arranged in the outlet pipe 3, the pressure sensor 9 is fixedly connected with the outlet pipe 3, and the valve body 1 is ...

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Abstract

The invention discloses an intercepting valve for a natural gas wellhead. The intercepting valve comprises a valve body, an air inlet pipe and an air outlet pipe, wherein the air inlet pipe is connected with a valve body air inlet, the air outlet pipe is connected with a valve body air outlet, the valve body is provided with an electric cylinder, a push plate is arranged under a piston rod of theelectric cylinder, the push plate is in bolted connection with the piston rod of the electric cylinder, an upper cavity is formed in the left side of the push plate, a lower cavity is formed in the right side of the push plate, an air outlet of the upper cavity is located under an air inlet of the lower cavity, a valve element paired with the air outlet of the upper cavity is arranged under the push plate, the valve element is fixedly connected with the push plate, the air outlet pipe is internally provided with a pressure sensor, the pressure sensor is fixedly connected with the air outlet pipe, the valve body is provided with a valve seat, the valve seat is fixedly connected with the valve body, a control device is arranged between the valve seat and the valve body, and the control device is located at the right side of the valve body; and the intercepting valve for the natural gas wellhead can effectively intercept gas circulation after a pipeline is broken.

Description

technical field [0001] The invention relates to a shut-off valve for a natural gas wellhead and a using method thereof. Background technique [0002] The definition of "natural gas" that people have used for a long time is a narrow definition from the perspective of energy, which refers to the mixture of hydrocarbon and non-hydrocarbon gases naturally stored in the formation. In petroleum geology, it usually refers to oil field gas and gas field gas. Its composition is dominated by hydrocarbons and contains non-hydrocarbon gases. [0003] The shut-off valve, also known as the closed-circuit valve, is used to connect or cut off the medium in the pipeline. In the natural gas pipeline, the flow of gas can be cut off by the shut-off valve after the pipeline is broken. [0004] However, the current cut-off valve cannot effectively cut off the flow of gas after it breaks during the transportation of the natural gas pipeline. Those skilled in the art hope to provide a valve that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K1/32F16K31/02F16K27/02
CPCF16K1/36F16K1/32F16K27/02F16K31/02
Inventor 不公告发明人
Owner 豆群儒