CN204960844U - Oil recovery well head gate valve area is pressed and is changed device - Google Patents
Oil recovery well head gate valve area is pressed and is changed device Download PDFInfo
- Publication number
- CN204960844U CN204960844U CN201520383650.9U CN201520383650U CN204960844U CN 204960844 U CN204960844 U CN 204960844U CN 201520383650 U CN201520383650 U CN 201520383650U CN 204960844 U CN204960844 U CN 204960844U
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- CN
- China
- Prior art keywords
- lead screw
- gate valve
- outer tube
- slips
- screw shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an oil recovery well head gate valve area is pressed and is changed device, including lead screw axle, slips subassembly, pneumatic cylinder, seal cover, outer tube, screw nut, stop valve and hydraulic pressure joint, wherein slips subassembly and pneumatic cylinder suit are in the optical axis section of lead screw axle front portion, and it is sealed that the seal cover is passed through at the pneumatic cylinder rear portion, lead screw axle rear portion lead screw section is equipped with the outer tube through the screw nut cover, and fixed by lock nut, the outer tube inboard has the shape that suits with the clamp connection, lead screw axle middle part is equipped with and leads to long hydraulic pressure oilhole, through fixing stop valve and the external pump of suppressing of hydraulic pressure joint in lead screw axle rear end, the hydraulic pressure oilhole is equipped with radial inlet port intercommunication pneumatic cylinder. The utility model discloses a cut the pressure oil circuit that comes from the well head and realize the purpose of area pressure change gate valve, device simple structure, low in manufacturing cost, easy operation can save a large amount of manpower and materials, improves maintenance change efficiency to do not influence normal oil recovery operation.
Description
Technical field
The utility model relates to oil field equipment maintain and replace technical field, particularly relates to a kind of production wellhead gate valve replacing device operated under pressure.
Background technology
Production wellhead is the important device in oil field equipment, and gate valve is the critical piece of production wellhead, needs to change when gate valve breaks down, but palpus stopping production pressure release during routine maintenance replacing gate valve; Can affect oil extraction operation progress during stopping production, pressure release can by a large amount of chemical agent under Injection Well and water blowback tank car again, more to finish changing after gate valve again by under a large amount of chemical agents and water Injection Well, can increase a lot of workload like this, waste time and energy.
Summary of the invention
The utility model provides a kind of production wellhead gate valve replacing device operated under pressure, only need an additional hydraulic pressure pressuring pump, just can realize the operation of replace with pressure gate valve, apparatus structure is simple, low cost of manufacture, simple to operate, a large amount of manpower and materials can be saved, improve maintain and replace efficiency, and do not affect normal oil producing operation.
In order to achieve the above object, the utility model realizes by the following technical solutions:
Production wellhead gate valve replacing device operated under pressure, comprise lead screw shaft, slip assemblies, hydraulic cylinder, sealing shroud, outer tube, feed screw nut, stop valve and hydraulic joint, wherein slip assemblies and hydraulic cylinder are contained in the optical axis section of lead screw shaft front portion, and hydraulic cylinder rear portion is sealed by sealing shroud; Lead screw shaft rear portion leading screw section is set with outer tube by feed screw nut, is fixed by locking nut, has the shape adapted with clamp connection inside outer tube; Elongated hydraulic pressure oilhole is provided with, by the external pressuring pump of stop valve and hydraulic joint being fixed on lead screw shaft rear end in the middle part of lead screw shaft; Hydraulic pressure oilhole is provided with radial fuel feed hole and is communicated with hydraulic cylinder, and end establishes shutoff to seal.
Described slip assemblies is made up of slips overcoat, Compress Spring and slips, and put along the circumferential direction uniform several slips outside slips, slips external surface has tooth-shape structure, establishes Compress Spring between slips and slips overcoat.
Described hydraulic cylinder front end and lead screw shaft front end have the pyramidal structure adapted with slips inner surface.
In described lead screw shaft, leading screw segment length is greater than the overall length of outer tube and gate valve, has the toroidal cavity that can hold sealing shroud, hydraulic cylinder and slip assemblies inside outer tube.
Described outer tube and feed screw nut end face are fixed by several uniform holding screw.
Described stop valve is dihedral needle-valve, and its maximum appearance and size is less than outer tube internal diameter.
Compared with prior art, the beneficial effects of the utility model are:
Adopt the utility model, only need an additional hydraulic pressure pressuring pump, just can realize the operation of replace with pressure gate valve, apparatus structure is simple, and low cost of manufacture is simple to operate, can save a large amount of manpower and materials, improves maintain and replace efficiency, and does not affect normal oil producing operation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is working state schematic representation one of the present utility model.
Fig. 3 is working state schematic representation two of the present utility model.
Fig. 4 is working state schematic representation three of the present utility model.
Fig. 5 is working state schematic representation four of the present utility model.
Fig. 6 a-Fig. 6 c is the three-view diagram of slips described in the utility model.
Fig. 7 is the main pseudosection of slips overcoat described in the utility model.
In figure: 1. shutoff 2. slip assemblies 21. slips 22. slips overcoat 3. hydraulic cylinder 4. sealing shroud 5. lead screw shaft 6. outer tube 7. feed screw nut 8. holding screw 9. locking nut 10. stop valve 11. hydraulic joint 12. hanger 13. four-way junction of casing 14. gate valve 15. clip I. gate valve replacing device operated under pressure
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further:
See Fig. 1, it is the structural representation of device described in the utility model, the utility model production wellhead gate valve replacing device operated under pressure, comprise lead screw shaft 5, slip assemblies 2, hydraulic cylinder 3, sealing shroud 4, outer tube 6, feed screw nut 7, stop valve 10 and hydraulic joint 11, wherein slip assemblies 2 and hydraulic cylinder 3 are sleeved in the optical axis section of lead screw shaft 5 front portion, and hydraulic cylinder 3 rear portion is sealed by sealing shroud 4; Lead screw shaft 5 rear portion leading screw section is set with outer tube 6 by feed screw nut 7, is fixed by locking nut 9, has and be connected with clip 15 shape adapted inside outer tube 6; Elongated hydraulic pressure oilhole is provided with, by being fixed on stop valve 10 and the external pressuring pump of hydraulic joint 11 of lead screw shaft 5 rear end in the middle part of lead screw shaft 5; Hydraulic pressure oilhole is provided with radial fuel feed hole and is communicated with hydraulic cylinder 3, and end establishes shutoff to seal.
Described slip assemblies 2 is made up of slips overcoat 22 (as shown in Figure 7), Compress Spring and slips 21 (as shown in fig. 6a-6c), along the circumferential direction uniform several slips 21 on slips overcoat 22, slips 21 external surface has tooth-shape structure, establishes Compress Spring between slips 21 and slips overcoat 22.
Described hydraulic cylinder 3 front end and lead screw shaft 5 front end have the pyramidal structure adapted with slips 21 inner surface.
In described lead screw shaft 5, leading screw segment length is greater than the overall length of outer tube 6 and gate valve 14, has the toroidal cavity that can hold sealing shroud 4, hydraulic cylinder 3 and slip assemblies 2 inside outer tube 6.
Described outer tube 6 is fixed by several uniform holding screw 8 with feed screw nut 7 end face.
Described stop valve 10 is dihedral needle-valve, and its maximum appearance and size is less than outer tube 6 internal diameter.
The using method of the utility model production wellhead gate valve replacing device operated under pressure is as follows:
All parts are installed in lead screw shaft 5 and form gate valve replacing device operated under pressure I, it is anterior that outer tube 6 screw into lead screw shaft 5 by feed screw nut 7, now sealing shroud 4, hydraulic cylinder 3 and slip assemblies 2 enter in the toroidal cavity of outer tube 6, are fixedly connected with inside outer tube 6 by clip 15 with gate valve 14 side; (as shown in Figure 2)
Open gate valve 14, lead screw shaft 5 head making to be provided with slip assemblies 2 and hydraulic cylinder 3 by rotating threaded shaft axle 5 enters in the four-way junction of casing 13 that is connected with gate valve 14 opposite side by gate valve 14; (as shown in Figure 3)
Lead screw shaft 5 is provided with hydraulic joint 11 side and connects pressuring pump by hydraulic joint 11, suppress 20 ~ 25MPa, hydraulic oil is by hydraulic pressure oilhole and enter hydraulic cylinder 3 through radial fuel feed hole, hydraulic cylinder 3 moves along lead screw shaft 5 to slips 21 side, promote slips 21 outwards to open, and be anchored on four-way junction of casing 13 tube wall; (as shown in Figure 4)
Voltage stabilizing 10 ~ 15 minutes, closes stop valve 10, takes off pressuring pump, unclamp holding screw 8, unload outer tube 6 and clip 15 successively from lead screw shaft 5, changes gate valve 14; (as shown in Figure 5)
After gate valve 14 has been changed, reinstall clip 15, outer tube 6 and holding screw 8, after opening stop valve 10 pressure release, slips 21 gets back to original position under Compress Spring effect; Rotating threaded shaft axle 5 makes lead screw shaft head return in outer tube 6, and closing gate valve 14 takes off gate valve replacing device operated under pressure I and clip 15, and whole replace with pressure gate valve process terminates.
As shown in Figure 2, the gate valve 14 of production wellhead is communicated with the hanger 12 of tubing head by four-way junction of casing 13, be communicated with the pressure oil circuit from well head in gate valve 14, the operating principle of gate valve replacing device operated under pressure I described in the utility model is: by will with slip assemblies 2, the lead screw shaft head of hydraulic cylinder 3 and sealing shroud 4 pushes in the four-way junction of casing 13 before gate valve 14, and the slips 21 passed in hydraulic oil promotion hydraulic cylinder 3 jack-up slip assemblies 2, a watt card 21 is made to be anchored on the tube wall of four-way junction of casing 13, sealed by sealing shroud 4 thus block the pressure oil circuit from well head, all the time passive state is in gate valve 14 in whole gate valve 14 Renewal process, thus achieve the object of replace with pressure gate valve 14.
Claims (6)
1. production wellhead gate valve replacing device operated under pressure, it is characterized in that, comprise lead screw shaft, slip assemblies, hydraulic cylinder, sealing shroud, outer tube, feed screw nut, stop valve and hydraulic joint, wherein slip assemblies and hydraulic cylinder are contained in the optical axis section of lead screw shaft front portion, and hydraulic cylinder rear portion is sealed by sealing shroud; Lead screw shaft rear portion leading screw section is set with outer tube by feed screw nut, is fixed by locking nut, has the shape adapted with clamp connection inside outer tube; Elongated hydraulic pressure oilhole is provided with, by the external pressuring pump of stop valve and hydraulic joint being fixed on lead screw shaft rear end in the middle part of lead screw shaft; Hydraulic pressure oilhole is provided with radial fuel feed hole and is communicated with hydraulic cylinder, and end establishes shutoff to seal.
2. production wellhead gate valve replacing device operated under pressure according to claim 1, it is characterized in that, described slip assemblies is made up of slips overcoat, Compress Spring and slips, along the circumferential direction uniform several slips is put outside slips, slips external surface has tooth-shape structure, establishes Compress Spring between slips and slips overcoat.
3. production wellhead gate valve replacing device operated under pressure according to claim 1, is characterized in that, described hydraulic cylinder front end and lead screw shaft front end have the pyramidal structure adapted with slips inner surface.
4. production wellhead gate valve replacing device operated under pressure according to claim 1, it is characterized in that, in described lead screw shaft, leading screw segment length is greater than the overall length of outer tube and gate valve, has the toroidal cavity that can hold sealing shroud, hydraulic cylinder and slip assemblies inside outer tube.
5. production wellhead gate valve replacing device operated under pressure according to claim 1, is characterized in that, described outer tube and feed screw nut end face are fixed by several uniform holding screw.
6. production wellhead gate valve replacing device operated under pressure according to claim 1, is characterized in that, described stop valve is dihedral needle-valve, and its maximum appearance and size is less than outer tube internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520383650.9U CN204960844U (en) | 2015-06-05 | 2015-06-05 | Oil recovery well head gate valve area is pressed and is changed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520383650.9U CN204960844U (en) | 2015-06-05 | 2015-06-05 | Oil recovery well head gate valve area is pressed and is changed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204960844U true CN204960844U (en) | 2016-01-13 |
Family
ID=55055917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520383650.9U Expired - Fee Related CN204960844U (en) | 2015-06-05 | 2015-06-05 | Oil recovery well head gate valve area is pressed and is changed device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204960844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879079A (en) * | 2015-06-05 | 2015-09-02 | 辽宁石油机械制造有限公司 | Sluice-valve under-pressure replacement device and method of oil extraction wellhead |
-
2015
- 2015-06-05 CN CN201520383650.9U patent/CN204960844U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879079A (en) * | 2015-06-05 | 2015-09-02 | 辽宁石油机械制造有限公司 | Sluice-valve under-pressure replacement device and method of oil extraction wellhead |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20210605 |