CN205859183U - A kind of erosion resistance choke valve - Google Patents
A kind of erosion resistance choke valve Download PDFInfo
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- CN205859183U CN205859183U CN201620667663.3U CN201620667663U CN205859183U CN 205859183 U CN205859183 U CN 205859183U CN 201620667663 U CN201620667663 U CN 201620667663U CN 205859183 U CN205859183 U CN 205859183U
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- valve
- gap
- described valve
- spool
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Abstract
This utility model relates to Oil/gas Well throttling control valve technical field, concrete open a kind of erosion resistance choke valve, including valve rod, valve gap, valve body, spool, there is in valve body valve pocket, valve pocket lower end is provided with exit passageway, being provided with intake channel on the right side of valve pocket, valve gap is extended downward the downside less than described intake channel, the lower surface by the upper end of valve body, and is in described valve pocket；Valve gap is positioned at the portion cross-sectional area of described valve pocket and is positioned at the portion cross-sectional area of described valve pocket upper end less than described valve gap, and valve gap is positioned at the part surface of described valve pocket and has hard alloy layer.This choke valve, fluid is when import enters valve pocket, directly impact acts on valve gap diameter shrinkage part, and the hard alloy layer that its surface has strengthens the erosive wear resistance of valve gap, and fluid directly impacts and acts on valve gap and fundamentally avoid and directly impact the erosion causing spool and vibration because of fluid, extends the life-span of spool.
Description
Technical field
This utility model relates to Oil/gas Well throttling control valve technical field, is specifically related to a kind of erosion resistance choke valve.
Background technology
Drilling well choke valve, as the key device of drilling well control system, passes through when there are the complex situations such as well kick, overflow
Regulation aperture, enforcement circulating with choke, to control shaft bottom back pressure, is finely pressed under balance pressure drilling, controlled pressure drilling and other Oil/gas Wells
Power control field needs choke valve to control the fluid that well head returns out all the time, and back pressure value is controlled, in the range of reasonably, finally to arrange
Except dangerous situation.And owing to choke valve is continuous work with pressure, to the functional reliability of choke valve, service life, on-the-spot can
Maintainability, debris blockage and pressure controlled accuracy is prevented to be proposed higher requirement.
Drilling well choke valve is divided into wedge shape, aciculiform, cartridge type and orifice-plate type four class choke valve, its executor by valve core structure at present
The form that mainly straight line fluid cylinder drives.Choke valve is long-term in drilling process keeps 50% aperture state, and residing operating mode is extremely disliked
Bad, especially when high-velocity fluid carries the solid particle impact choke valve such as blanc fixe or Iron Ore Powder, runner latus rectum diminishes, presses
Power reduces and causes the increase of fluid-mixing flow velocity, adds that the alternating force effect of high-velocity fluid causes choke valve spool high vibration occur
The problems such as fracture, the serious erosive wear in spool face local, even ultimately result in Solid Coupling Analysis of Throttle Valve and cause safe dangerous situation.It is at present
Only, being susceptible to fracture and the problem such as erosive wear is serious for above-mentioned drilling well throttle valve core, main settling mode uses and changes
Change valve core structure and material are to improve anti-vibration and erosion resistance ability, concrete: to use soldering to connect needle regulator spool and valve
Bar, reduces spool fracture probability, but owing to aciculiform spool and cartridge type spool all use cantilever beam structure, inlet fluid is without hindrance in addition
Hindering directly impact to act on spool causes spool breakage problem to solve to being difficult to.And wedge shape valve core lower end leads to against valve seat, upper end
Cross the axis pin parallel with inlet axis and connect valve rod, form simple beam structure, reduce vibration, use hard alloy material to add
Work spool, reduces erosive wear.But pin hole occurs that stress concentrates the percussion of fluid in addition still to cause spool to rupture, with
Time wedge shape valve core top and tail end guide face erosive wear serious.
Summary of the invention
In order to overcome the defect of prior art, the purpose of this utility model is to provide a kind of erosion resistance choke valve, this throttling
Valve Anti-erosion, anti-vibration, negotiability and anti-blockage capability are strong, service life is long.
In order to realize object above, this utility model adopts the following technical scheme that
A kind of erosion resistance choke valve, including valve rod, valve gap, valve body, spool, has valve pocket, described valve pocket in described valve body
Lower end is provided with exit passageway, is provided with intake channel on the right side of valve pocket, and described valve gap is extended downward under it by the upper end of valve body
End face is less than the downside of described intake channel, and is in described valve pocket；Described valve gap is positioned at the partial sectional of described valve pocket
Face area is positioned at the portion cross-sectional area of described valve pocket upper end less than described valve gap, and described valve gap is positioned at described valve pocket
Part surface has hard alloy layer.
Described valve rod inserts in described valve gap, and described spool is connected to the lower end of described valve rod, described pin by pin
Bearing of trend vertical with the bearing of trend of described intake channel.
Described spool upper end is cylinder, is symmetrical arranged two throttling inclined-planes in cylindrical spool lower end, and throttle inclined-plane
Bottom is symmetrical arranged two throttling vertical planes parallel with valve element circle styletable axis.
The material that described spool uses is Hardmetal materials.
Owing to valve gap lengthens, for keeping the volume of valve pocket, described valve pocket lower end is provided with deep gouge, and extended volume also can simultaneously
Reduce flow velocity, form relief area.
Vertical dimension between described valve pocket bottom surface and intake channel axis is more than described valve pocket end face and intake channel axle
Vertical dimension between line.
It is provided with wear-resistant sleeve on the sidewall of described exit passageway；The material that described wear-resistant sleeve uses is hard alloy.
The packing for sealed valve stem Yu valve gap it is provided with between described valve rod and valve gap.
This utility model erosion resistance choke valve, by valve gap is inserted valve inner by valve body upper end, and extends downward
Bottom surface is less than the downside of valve body intake channel, and is in the part of described valve pocket at valve gap and does undergauge and process and be in valve pocket
The valve gap cross-sectional area in portion is less than being in the valve gap cross-sectional area of valve pocket upper end so that fluid when import enters valve pocket,
Directly impact acts on valve gap diameter shrinkage part, and the hard alloy layer that has of its surface strengthens the erosive wear resistance of valve gap, and
And fluid directly impacts and acts on valve gap and fundamentally avoid and directly impact the erosion causing spool and vibration because of fluid, prolong
Grow the life-span of spool.
Further, the spool of this utility model erosion resistance choke valve is connected to the lower end of valve rod by pin, changes joint
Stream valve is by traditional design parallel with intake channel axis for the perforate direction of pin, by the bearing of trend of pin and intake channel
Bearing of trend vertical design, further avoid the fluid direct impact to pin, thus pin will not be thrust, pin simultaneously
The change of position adds spool non-deformability, and then reduces the probability of disc vibration fracture.
Further, this utility model erosion resistance choke valve, spool upper end is cylinder, in cylindrical spool lower end pair
Claiming to arrange two throttling inclined-planes, throttling bottom, inclined-plane is symmetrical arranged two throttling vertical planes parallel with valve element circle styletable axis,
Making choke valve in the case of ensureing to bear higher pressure, area of passage strengthens, and reduces the back pressure of choke valve huge discharge, joint
The stream downward drainage effect of valve is more preferable, and drain direction is the most consistent with exit passageway axis direction, decreases and sets outlet channel
The impact of the wear-resistant sleeve put, further increases the service life of choke valve.
Further, this utility model erosion resistance choke valve, vertical between valve pocket valve pocket bottom surface and intake channel axis
Distance, more than the vertical dimension between described valve pocket end face and intake channel axis, increases the volume of valve pocket, reduces entrance
The speed of valve cavity fluid, reduces fluid to spool and the erosion of bonnet lower, improve further choke valve serviceability and
Life-span.
Accompanying drawing explanation
Fig. 1 is the internal overall structure schematic diagram of erosion resistance choke valve that this utility model embodiment provides；
Fig. 2 is erosion resistance throttle valve stem and the valve core connecting structure schematic diagram of this utility model embodiment offer；
Fig. 3 is the Fig. 2 profile along A-A direction；
Fig. 4 is the erosion resistance throttle valve core front view that this utility model embodiment provides；
Fig. 5 is the erosion resistance throttle valve core side view that this utility model embodiment provides.
Detailed description of the invention
Embodiment
A kind of erosion resistance choke valve, as shown in Fig. 1 ~ 3, including valve rod 1, valve gap 3, valve body 4, spool 6, in described valve body 4
Having valve pocket 8, described valve pocket 8 lower end is provided with exit passageway 11, is provided with intake channel 12 on the right side of valve pocket 8, described valve gap 3 by
The upper end of valve body 4 extends downward the downside less than described intake channel 12, the lower surface, and is in described valve pocket 8；Described valve
Lid 3 is positioned at the portion cross-sectional area of described valve pocket 8 and is positioned at the partial cross sectional of described valve pocket 8 upper end less than described valve gap 3
Area, and described valve gap 3 is positioned at the part surface of described valve pocket 8 and has hard alloy layer.
Further, described valve rod 1 inserts in described valve gap 3, is provided with for sealing between described valve rod 1 and valve gap 3
Valve rod 1 and the packing 2 of valve gap 3, described spool 6 is connected to the lower end of described valve rod 1, the extension side of described pin 5 by pin 5
To vertical with the bearing of trend of described intake channel 12.
Further, as shown in Fig. 4 ~ 5, described spool 6 upper end is cylinder, sets in cylindrical spool 6 lower end symmetry
Putting two throttling inclined-planes 61, throttling bottom, inclined-plane is symmetrical arranged two throttling vertical planes 62 parallel with spool 6 cylindrical end axis.
In order to improve the erosive wear resistance of spool further, the material that described spool uses is Hardmetal materials.
Further, valve pocket 8 lower end is provided with deep gouge 9.
In order to expand the volume of valve pocket, improve the erosive wear resistance of spool, described valve pocket 8 bottom surface and intake channel 12 axis
Between vertical dimension more than vertical dimension between described valve pocket 8 end face and intake channel 12 axis.
In order to improve further the service life of choke valve, the sidewall of described exit passageway 11 is provided with wear-resistant sleeve 10；
The material that described wear-resistant sleeve 10 uses is hard alloy.
During using the present embodiment erosion resistance choke valve to carry out Oil/gas Well throttling pressure regulation, fluid enters through Novel throttling valve
Mouthful, after impacting the valve gap with hard alloy layer, then the valve pocket between spool and valve body, then go out through Novel throttling valve
Mouth flows out, and valve rod band movable valve plug pumps, the choke pressure needed for generation.
Claims (8)
1. an erosion resistance choke valve, including valve rod, valve gap, valve body, spool, has valve pocket, under described valve pocket in described valve body
End be provided with exit passageway, be provided with intake channel on the right side of valve pocket, it is characterised in that described valve gap by the upper end of valve body to downward
Extend the downside less than described intake channel, its lower surface, and be in described valve pocket；Described valve gap is positioned at described valve pocket
Portion cross-sectional area is positioned at the portion cross-sectional area of described valve pocket upper end less than described valve gap, and described valve gap is positioned at described
Part surface in valve pocket has hard alloy layer.
2. erosion resistance choke valve as claimed in claim 1, it is characterised in that described valve rod inserts in described valve gap, described valve
Core is connected to the lower end of described valve rod by pin, and the bearing of trend of described pin hangs down with the bearing of trend of described intake channel
Directly.
3. erosion resistance choke valve as claimed in claim 1 or 2, it is characterised in that described spool upper end is cylinder, at cylinder
The spool lower end of shape be symmetrical arranged two throttling inclined-planes, throttling bottom, inclined-plane be symmetrical arranged two parallel with valve element circle styletable axis
Throttling vertical plane.
4. erosion resistance choke valve as claimed in claim 1 or 2, it is characterised in that the material that described spool uses is that hard closes
Gold copper-base alloy.
5. erosion resistance choke valve as claimed in claim 1 or 2, it is characterised in that described valve pocket lower end is provided with deep gouge.
6. erosion resistance choke valve as claimed in claim 1 or 2, it is characterised in that described valve pocket bottom surface and intake channel axis
Between vertical dimension more than vertical dimension between described valve pocket end face and intake channel axis.
7. erosion resistance choke valve as claimed in claim 1 or 2, it is characterised in that be provided with on the inwall of described exit passageway
Wear-resistant sleeve；The material that described wear-resistant sleeve uses is hard alloy.
8. erosion resistance choke valve as claimed in claim 1 or 2, it is characterised in that be provided with use between described valve rod and valve gap
Packing in sealed valve stem Yu valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620667663.3U CN205859183U (en) | 2016-06-30 | 2016-06-30 | A kind of erosion resistance choke valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620667663.3U CN205859183U (en) | 2016-06-30 | 2016-06-30 | A kind of erosion resistance choke valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205859183U true CN205859183U (en) | 2017-01-04 |
Family
ID=57644179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620667663.3U Active CN205859183U (en) | 2016-06-30 | 2016-06-30 | A kind of erosion resistance choke valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205859183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268140A (en) * | 2020-10-28 | 2021-01-26 | 中国矿业大学 | Cavitation inhibition type hydraulic valve |
| CN113418011A (en) * | 2021-07-27 | 2021-09-21 | 苏州道森钻采设备股份有限公司 | Puncture-corrosion-resistant zero-sealing throttle valve |
-
2016
- 2016-06-30 CN CN201620667663.3U patent/CN205859183U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268140A (en) * | 2020-10-28 | 2021-01-26 | 中国矿业大学 | Cavitation inhibition type hydraulic valve |
| CN113418011A (en) * | 2021-07-27 | 2021-09-21 | 苏州道森钻采设备股份有限公司 | Puncture-corrosion-resistant zero-sealing throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180731 Address after: 100028 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Co-patentee after: ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. SINOPEC, PIPE COMPANY Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Co-patentee after: SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. Address before: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Co-patentee before: ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. SINOPEC, PIPE COMPANY Patentee before: SINOPEC OILFIELD SERVICE CORPORATION |
|
| TR01 | Transfer of patent right |