CN202645504U

CN202645504U - Alloy plug valve

Info

Publication number: CN202645504U
Application number: CN 201220305316
Authority: CN
Inventors: 马艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-06-28
Filing date: 2012-06-28
Publication date: 2013-01-02
Anticipated expiration: 2022-06-28

Abstract

The utility model discloses an alloy plug valve, which comprises a valve body. A valve core is. arranged in an inner bore of the valve body; the valve core is mainly formed by matching an upper split collar, an upper valve seat, a lower split collar, a ball valve, a rotary pin and a lower valve seat in sequence. The parts of the plug valve are respectively made of a stainless steel material, so that the plug valve is high in bearing capacity and is corrosion-resistant, hard alloy is plated on the surface, and the plug valve has the advantages of wear resistance, scour resistance and small friction coefficient. The safety can be enhanced; the service life of the alloy plug valve can be prolonged; and the opening and closing resistance is reduced. The alloy plug valve disclosed by the utility model is convenient for an opening and closing operation under pressure.

Description

The alloy plug valve

Technical field

The utility model relates to petroleum drilling engineering equipment, is specifically related to the alloy plug valve that prevents blowout that a kind of oilfield downhole operation uses.

Background technology

In carrying out the oilfield downhole operation process, often can run into because borehole pressure is excessive, when causing lower drilling tool, the phenomenon of blowout appears.Operating environment is on every side not only polluted in blowout, and hinders operating personnel's normal operating, affects job scheduling and construction quality, and plug valve is the effective tool that prevents blowout.But, under highly difficult, the excessive risk operating condition that nowadays drilling well difficulty and the degree of depth continue to increase, existing plug valve bears pressure, corrosion-resistant and flushing resistance aspect is difficult to satisfy, and awaits in safety and application life improving, and the switch resistance is large, is difficult to realize having switching manipulation under the pressure.

The utility model content

For above-mentioned the deficiencies in the prior art, the utility model provides a kind of alloy plug valve, and this alloy plug valve has and bears pressure height, corrosion-resistant and flushing resistance good, the switch resistance is little advantage.

In order to achieve the above object, the utility model alloy plug valve, comprise valve body, in valve body inner bore spool is set, spool comprises upper valve base, ball valve and lower valve base, described ball valve spherical outside surface matches with upper valve base and lower valve base Internal Spherical Surface, and ball valve one side sees through body wall rotating dog is set, and control spanner grafting groove is set in the rotating dog outer end.

Further, described upper valve base is assemblied between split collar and the lower split collar, should be installed in the upper amalgamation annular groove of valve interior wall by upper split collar, in upper split collar, tightening device is set, described lower split collar is assemblied in the lower amalgamation annular groove of valve interior wall, upper split collar and lower split collar with upper valve base along plug valve valve body axial limiting.

Preferably, described tightening device comprises support set, and this support set can radially strut upper split collar, and jump ring is set above support set, this jump ring is installed in the jump-ring slot of split collar inwall, and this jump ring and upper valve base upper surface are spacing in upper split collar with support set.

Further, described lower valve base external peripheral surface and valve body inner bore are slidingly matched, and between lower valve base end face and valve body ladder end face spring are set.

Preferably, described lower valve base external peripheral surface is made stepped, is slidingly matched with valve body ladder endoporus, and lower valve base big circumference section arranges spring up between lower valve base ladder end face and valve body ladder end face.

Further, described plug valve part all adopts the stainless steel material manufacturing, and each spool parts and valve interior surface plating carbide alloy arrange the plating hard alloy seal ring on upper valve base, lower valve base and rotating dog and the valve interior wall fitting face.

The utility model alloy plug valve mainly has following characteristics: the plug valve part is by the stainless steel material manufacturing, bearing capacity is high, corrosion-resistant, carbide-faced, have wear-resistant, resistance to erosion, advantage that friction factor is little, can reduce the switch resistance, be convenient to have the switching manipulation under the pressure condition, improve safety and application life.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the utility model structural representation.

In the drawings, 1. valve body, 2. go up split collar, 3. jump ring, 4. support set, 5. joint ring, 6. descend split collar, 7. upper valve base, 8. lower valve base, 9. spring, 10. joint ring, 11. joint rings, 12. rotating dogs, 13. ball valves.

The specific embodiment

Such as Fig. 1, the utility model alloy plug valve, comprise valve body 1, in valve body inner bore spool is set, spool comprises upper valve base 7, ball valve 13 and lower valve base 8, described ball valve 13 spherical outside surfaces match with upper valve base 7 and lower valve base 8 Internal Spherical Surface, and ball valve 13 1 sides see through valve body 1 sidewall rotating dog 12 is set, and control spanner grafting groove is set in rotating dog 12 outer ends.

Further, described upper valve base 7 is assemblied between split collar 2 and the lower split collar 6, should be installed in the upper amalgamation annular groove of valve body 1 inwall by upper split collar 2, at the upper split collar 2 interior tightening devices that arrange, described lower split collar 6 is assemblied in the lower amalgamation annular groove of valve body 1 inwall, upper split collar 2 with lower split collar 6 with upper valve base 7 along plug valve valve body 1 axial limiting.

Preferably, described tightening device comprises support set 4, and this support set 4 can radially strut upper split collar 2, and jump ring 3 is set above support set 4, this jump ring 3 is installed in the jump-ring slot of split collar 2 inwalls, and this jump ring 3 is spacing in upper split collar 2 with support set 4 with upper valve base 7 upper surfaces.

Further, described lower valve base 8 external peripheral surfaces and valve body 1 endoporus are slidingly matched, and between lower valve base 8 end faces and valve body 1 ladder end face spring 9 are set.

Preferably, described lower valve base 8 external peripheral surfaces are made stepped, are slidingly matched with valve body 1 ladder endoporus, and lower valve base 8 big circumference sections arrange spring 9 up between lower valve base 8 ladder end faces and valve body 1 ladder end face.

Further, described plug valve part all adopts the stainless steel material manufacturing, and each spool parts and valve body 1 inner surface plating carbide alloy arrange respectively plating hard

alloy seal ring

5,10,11 on upper valve base 7, lower valve base 8 and rotating dog 12 and the valve body 1 inwall fitting face.

Above described just for the utility model is described, meet the various flexible form of the utility model thought all within protection domain of the present utility model.

Claims

1. the utility model alloy plug valve, it is characterized in that: described plug valve comprises valve body, in valve body inner bore spool is set, spool comprises upper valve base, ball valve and lower valve base, described ball valve spherical outside surface matches with upper valve base and lower valve base Internal Spherical Surface, ball valve one side sees through body wall rotating dog is set, and control spanner grafting groove is set in the rotating dog outer end.

2. described alloy plug valve according to claim 1, it is characterized in that: described upper valve base is assemblied between split collar and the lower split collar, should be installed in the upper amalgamation annular groove of valve interior wall by upper split collar, in upper split collar tightening device is set, described lower split collar is assemblied in the lower amalgamation annular groove of valve interior wall.

3. described alloy plug valve according to claim 1, it is characterized in that: described lower valve base external peripheral surface and valve body inner bore are slidingly matched, and between lower valve base end face and valve body ladder end face spring are set.

4. according to claim 1,2 or 3 described alloy plug valves, it is characterized in that: described spool parts all adopts the stainless steel material manufacturing, each part and valve interior surface plating carbide alloy arrange the plating hard alloy seal ring on upper valve base, lower valve base and rotating dog and the valve interior wall fitting face.