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Long-service-life split type valve seat

A split type and valve seat technology, which is applied in variable capacity pump components, liquid fuel engines, parts of pumping devices for elastic fluids, etc., can solve the problems of frequent replacement, aggravated valve bodies and valve seats, Problems such as short service life of the valve seat can achieve the effect of reducing production cost, prolonging service life and wide application range

Pending Publication Date: 2020-09-15
YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the valve body will collide with the valve seat when it is closed, and the high-pressure operation will intensify the collision between the valve body and the valve seat, so the valve seat is prone to wear, corrosion, fragmentation, etc., resulting in Short service life, weak wear resistance, frequent replacement
Moreover, most of the valve seats used in oil and gas field production operations are integrally formed. Once worn out, they need to be replaced as a whole, which takes time and effort, affects the progress of oil and gas field operations, and increases the cost of oil and gas field operations.

Method used

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  • Long-service-life split type valve seat
  • Long-service-life split type valve seat
  • Long-service-life split type valve seat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a long-life split valve seat includes a bushing 3 and a base 4, the bushing 3 is embedded in the outlet end of the base 4, and the bushing 3 is used in conjunction with the valve body 1, so The bushing 3 is tungsten carbide alloy. Further preferably, the tungsten carbide alloy includes nickel-based tungsten carbide or cobalt-based tungsten carbide. The bushing 3 is a cylindrical structure, the base 4 is a T-shaped structure, and the base 4 includes a cylindrical head and a circular frustum tail connected sequentially from top to bottom, and the diameter of the upper bottom surface of the circular frustum tail is larger than Bottom diameter. The diameter of the head of the cylinder is greater than the diameter of the upper bottom surface of the tail of the frustum of a cone. A first through hole is provided in the bushing 3, and the first through hole includes a first circular truncated through hole 5 and a first cylindrical through hole 6 c...

Embodiment 2

[0038] Such as figure 2 As shown, a long-life split valve seat, the difference from embodiment 1 is that the bushing 3 is a circular platform structure, and the diameter of the upper bottom surface of the first circular platform through hole 5 of the bushing 3 is the same as that of the valve rubber 2 The maximum outer diameter is the same. The bushing 3 is assembled with the base 4 by a pressing method. The second through hole includes a bushing insertion hole 8 and a second cylindrical through hole 9 connected sequentially from top to bottom, the bushing insertion hole 8 is in the shape of a cone, and the diameter of the upper bottom surface of the bushing insertion hole 8 greater than the bottom diameter. The diameter of the lower bottom surface of the bushing insertion hole 8 is larger than the diameter of the second cylinder through hole 9 . The base 4 is also provided with an annular groove 10 on the platform formed by the bush insertion hole 8 and the second cylinde...

Embodiment 3

[0040] Such as image 3 As shown, a long-life split-type valve seat is different from Embodiment 1 in that the base 4 is a truncated circular structure, and the diameter of the upper bottom surface of the base is larger than the diameter of the lower bottom surface.

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Abstract

The invention discloses a long-service-life split type valve seat. The long-service-life split type valve seat comprises linings and bases. The linings are embedded into the outlet ends of the bases.The linings are matched with a valve body for use. Each lining is a tungsten carbide alloy. The long-service-life split type valve seat has the beneficial effects that the valve seat is composed of the linings and the bases, the linings are made of a hard alloy material, the hardness, the strength, the wear resistance and the corrosion resistance of the linings are improved, and the service life of the valve seat is greatly prolonged; the valve seat is of a split structure, once abrasion occurs, only the linings or the bases need to be replaced, integral replacement is not needed, maintenanceis convenient, the time and labor are saved, and meanwhile the production cost of an oil and gas field is reduced; the appropriate diameter sizes of the linings can be selected according to the working pressure, the conveying medium, the degree of abrasion of the valve body to the valve seat and the like in actual working conditions, and the application range is wide; the linings and the bases arein various shapes and can be combined according to actual working condition requirements, and the applicability is high.

Description

technical field [0001] The invention relates to the technical field of plunger pumps, in particular to a long-life split valve seat. Background technique [0002] At present, fracturing construction is the main production stimulation method in oil and gas field production. Piston pump is the main equipment for pumping fracturing medium at high pressure in oil and gas field production stimulation operations. The conditions are getting worse and worse, requiring high-pressure, large-displacement operations, especially in unconventional oil and gas operations——shale gas operations, where the operating pressure is sometimes as high as 120MPa. Pressure work, which makes the parts of the plunger pump more prone to wear and tear. The linear reciprocating motion of the piston of the plunger pump drives the change of the pressure in the cavity of the hydraulic end valve box of the plunger pump, and then realizes the periodic change of the opening and closing of the valve body. Beca...

Claims

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Application Information

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IPC IPC(8): F04B53/10
CPCF04B53/10F04B53/108F04B53/1087
Inventor 李海龙李晓斌郭子蒙姜琛王继鑫李朋
Owner YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD
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