A plug-in casing gas recovery device for anti-freeze blockage
A technology for recovering device and casing gas, which is applied to wellbore/well valve device, production fluid, wellbore/well components, etc. It can solve the problem of valve core freezing blockage, and achieve the solution of freezing blockage and complete recovery of casing. gas effect
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Embodiment 1
[0019] In order to overcome the problem of easy blockage of existing devices, the present invention provides such as figure 1 Shown is a plug-in type anti-freezing casing gas recovery device. This device solves the problem of freezing of the valve core and achieves the purpose of completely recovering the casing gas. The constant pressure purge valve is opened to discharge condensed water at the same time. So as to completely solve the problem of heat absorption and winter freezing when the gas is released; at the same time, the one-way valve can prevent crude oil from flowing into the casing.
[0020] A plug-in casing gas recovery device for anti-freeze blockage, comprising an oil pipe 3, a constant pressure release valve 2 and a pressure conductor 15, the lower end of the constant pressure release valve 2 is inserted into the oil pipe 3, and the upper end of the constant pressure release valve 2 is set There is a pressure regulating cap 4, the upper end of the pressure regul...
Embodiment 2
[0027] Based on Embodiment 1, in this embodiment, the pressure regulating cap 4 and the pressure conductor 15 are fixedly connected by bolts 5 .
[0028] The pressure regulating cap 4 of the constant pressure release valve 2 of this device is fixed on the pressure conductor 15 through the bolt 5, which ensures the pressure change sensed by the pressure conductor 15 and then adjusts the constant pressure release valve 2 to provide the required pressure value.
[0029] The lower end of the air intake cavity 7 is sleeved on the valve holder 9 through the gasket 8 .
[0030] The valve support 9 is sealed and connected with the lower end of the air intake chamber 7 through the sealing gasket 8 to ensure the internal sealing of the air intake chamber 7 .
[0031] The valve holder 9 is connected with the valve seat 10 through a screw thread. The threaded connection ensures that the valve holder 9 will not slip and is connected with the valve seat 10 as a whole.
[0032] The spring...
Embodiment 3
[0037] On the basis of Embodiment 1, in this embodiment, a scale sleeve 6 is provided on the outer upper end of the air intake cavity 7 .
[0038] A scale sleeve 6 is provided outside the air intake cavity 7, so that the adjustment changes can be seen clearly and intuitively, and the scale sleeve 6 can accurately display the read data.
[0039] The scale sleeve 6 is sleeved on the outside of the air intake chamber 7 through an O-ring.
[0040] The O-shaped sealing ring prevents the scale sleeve 6 set outside the air intake chamber 7 from falling off due to temperature changes, and ensures that the scale sleeve 6 and the air intake chamber 7 are hermetically connected.
[0041] The pressure regulating cap 4 of the constant pressure release valve 2 of the device is fixed on the pressure conducting body 15 through the bolt 5, the scale sleeve 6 is set on the outside of the air intake chamber 7 through the O-shaped sealing ring, and the upper end of the air intake chamber 7 is con...
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