Double-acting pressure relief blowout preventer

A blowout preventer and pressure relief technology, used in engine components, safety valves, balance valves, etc., can solve problems such as potential safety hazards in oil operations, and achieve the effect of precise control and accuracy.

Inactive Publication Date: 2017-08-04
YANCHENG JINRUI PETROLEUM MACHINERY CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] In oil and gas exploration and development, if there is pressure in the well, it is necessary to install a sucker rod blowout preventer at the wellhead. After the existing sucker rod blowout preventer closes the wellhead, once the pressure in the well is higher than the blowout preventer When the rated pressure is exceeded, it will bring great safety hazards to oil operations

Method used

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  • Double-acting pressure relief blowout preventer

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Embodiment Construction

[0020] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0021] Such as figure 1 As shown, the present invention is a double-acting pressure relief blowout preventer, including an overflow pipeline, a valve body and a valve driver, and the valve body includes a valve body pipeline, wherein the valve driver is installed on the valve body of the valve body In the pipeline; the flow-through pipeline is installed vertically at the tail of the valve body pipeline, and the valve driver includes a pressure-sensing tube slidingly connected with the valve body pipeline, and a pressure-sensing spring is sealingly connected to the top of the pressure-sensing tube The other end of the pressure-sensing tube is sealed with a par...

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Abstract

The invention relates to a double-acting pressure relief blowout preventer, which includes an overflow pipeline, a valve body and a valve driver. The valve body includes a valve body pipeline. A pressure-sensing reed is sealed at the top of the pressure-sensing tube, a partition block is connected to the other end of the pressure-sensing tube, and a floating piston is connected to the other end of the pressure-sensing tube through the partition block, and the floating piston is slidingly connected to the partition block through a push rod. A valve block is fixed on the end of the push rod, connecting nozzles are provided at both lateral ends of the flow passage, a sliding hole is provided in the middle of the flow passage, and an annular conduction groove is provided on the valve block. A pressure relief pipeline and a pressure relief pipeline communicating with the connecting nozzle are arranged in the overflow pipeline, and the diameter of the pressure relief pipeline corresponds to the width of the conduction groove; a pressure sensing plate is connected to the top of the pressure sensing tube; A pressure-sensing cavity is provided at the end of the valve body pipeline facing away from the flow-through pipeline, and the pressure-sensing cavity is connected with the oil pipeline, and a pressure-discharging hole is provided in the middle of the pressure-sensing plate.

Description

technical field [0001] The invention relates to a book friend pipeline pressure control device, in particular to a double-acting pressure relief blowout preventer. Background technique [0002] In oil and gas exploration and development, if there is pressure in the well, it is necessary to install a sucker rod blowout preventer at the wellhead. After the existing sucker rod blowout preventer closes the wellhead, once the pressure in the well is higher than the blowout preventer When the rated pressure is exceeded, it will bring great safety hazards to oil operations. Contents of the invention [0003] The technical problem to be solved by the present invention is: to overcome the technical problems in the prior art and provide a method. [0004] The technical solution adopted by the present invention to solve its technical problems is: [0005] A double-acting pressure relief blowout preventer includes an overflow pipeline, a valve body and a valve driver, the valve body...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/02
CPCF16K17/02
Inventor 花金年钱瑞祥钱正楠
Owner YANCHENG JINRUI PETROLEUM MACHINERY CO LTD
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