Spring sheet type pressure release valve

Abstract

The invention relates to the technical field of emergency pressure release tools in well drilling and cementation operations, in particular to a spring sheet type pressure release valve. The pressure release valve comprises a valve body, a ball seat, a cavity spring seat, a mounting body, a spring sheet, a ball and an adjusting lead screw; an axial passage is formed in the valve body; a first ring slot, the inside diameter of which is greater than that of the axial passage, is formed in the middle part of the valve body; the ball seat is clamped on the right part of the first ring slot; the inner part of the ball seat is communicated with the axial passage; a second ring slot, the inside diameter of which is greater than that of the first ring slot, is formed in the valve body on the left part of the first ring slot; the right part of the cavity spring seat is fixedly arranged in the second ring slot; and a mounting head, the outside diameter of which is greater than that of the mounting body, is fixed at the right end of the mounting body. The pressure release valve is reasonable and compact in structure and convenient to use; automatic opening and closing of the valve are realized by using the spring sheet; through the pressure release valve, overpressure protection on the personnel safety and a high pressure system can be realized without halting, the pressure adjusting range is enlarged, and the released pressure can be randomly adjusted; and the pressure release valve is convenient to assemble and disassemble.

Description

technical field [0001] The invention relates to the technical field of emergency pressure relief tools in drilling and cementing operations, and relates to a shrapnel type pressure relief valve. Background technique [0002] The drilling operation environment is high-pressure operation. In the past, in order to avoid personal injury and damage to high-pressure equipment caused by sudden suffocation of the pump and instantaneous pressure rise, the only safety measure often used is the safety valve on the drilling mud pump, that is, the shear pin type pressure relief. When this kind of pressure relief valve exceeds the set value, the high-pressure mud is ejected to realize the pressure relief. Since there is no recovery device, it is easy to cause injury to the surrounding personnel. In the cementing operation, the casing and the annular Sudden blockage of the space causes the pressure to rise instantaneously. When the pressure is too high, the entire safety valve assembly is ...

AI Technical Summary

Problems solved by technology

[0003]The present invention provides a shrapnel type pressure relief valve, which overcomes the shortcomings of the above-mentioned prior art, and can effectively solve the personal injury caused by the instantaneous pressure rise in the drilling operation. Injury and damage to high voltage equipment

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