BOP high and low pressure test valve
A high-low pressure, blowout preventer technology, applied in the direction of valve details, multi-way valves, valve devices, etc., can solve the problems of low work efficiency, frequent high and low pressure joints, inaccurate readings, etc., to improve work efficiency and reduce labor Intensity, accurate reading effect
Active Publication Date: 2016-01-06
盐城市大冈石油工具厂有限责任公司
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Problems solved by technology
[0002] The blowout preventer is a key part of the well control device. It is mainly used in drilling, oil production and other operations to control the wellhead pressure during the operation. Therefore, the high and low pressure sealing test must be carried out before the blowout preventer is used in the well to check the sealing performance of the blowout preventer. The main measure of whether it can be used in the field is that according to the well control requirements, the high and low pressure tests need to be carried out separately, and the high pressure gauge cannot be used together. The original pressure test valve cannot complete the pressure test in the same pressure pipeline, the reading is not accurate, and the structure Loose, frequent high and low pressure joints, poor safety factor, high labor intensity and low work efficiency at the same time
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[0013] The specific content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0014] Such as figure 1 , figure 2 , image 3 As shown, the blowout preventer high and low pressure pressure test valve includes: a valve body 1, a lock cap 2 connected to one end of the valve body 1, an installation cavity 3 is arranged inside the valve body 1, and the installation cavity 3 It is provided with a main piston 4 and a return spring 5 that cooperate with it. One end of the return spring 5 is against the main piston 4, and the other end of the return spring 5 is against the lock cap 2. It is arranged on the valve body 1 and the installation cavity 3 connected pressure inlets 6, the main piston 4 is provided with a main piston passage 7, a main piston upper passage 8 communicating with the main piston passage 7 and a main piston lower passage 9 communicating with the main piston passage 7, The valve bod...
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The invention discloses a high-low pressure test valve of a blowout preventer. The high-low pressure test valve is capable of testing pressure by pressure and by gauge. The high-low pressure test valve comprises a valve body and a lock nut connected with one end of the valve body, a mounting cavity is formed inside the valve body, a main piston and a return spring which are matched with each other are arranged in the mounting cavity, a pressure inlet communicated with the mounting cavity is formed in the valve body, a main piston passage as well as an upper main piston passage and a lower main piston passage both communicated with the main piston passage are arranged in the main piston, a low-pressure pressure gauge connection and a high-pressure pressure gauge connection are arranged on a low-pressure passage and a high-pressure passage respectively, a low-pressure main piston limiting device is arranged on the valve body, an upper pressure-releasing passage structure is arranged between the upper main piston passage and the low-pressure passage, and a lower pressure-releasing passage structure is arranged between the lower main piston passage and the high-pressure passage.
Description
technical field [0001] The invention relates to a detection device for a well control device, in particular to a high and low pressure test valve for a blowout preventer. Background technique [0002] The blowout preventer is a key part of the well control device. It is mainly used in drilling, oil production and other operations to control the wellhead pressure during the operation. Therefore, the high and low pressure sealing test must be carried out before the blowout preventer is used in the well to check the sealing performance of the blowout preventer. The main measure of whether it can be used in the field is that according to the well control requirements, the high and low pressure tests need to be carried out separately, and the high pressure gauge cannot be used together. The original pressure test valve cannot complete the pressure test in the same pressure pipeline, the reading is not accurate, and the structure Loose, frequent high and low pressure joints, poor ...
Claims
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IPC IPC(8): F16K11/10F16K31/12G01N3/12
CPCE21B33/06E21B34/02E21B47/06
Inventor 顾国才张树平杨传还
Owner 盐城市大冈石油工具厂有限责任公司