CN201024968Y - Automatic valve type ejection preventive box - Google Patents
Automatic valve type ejection preventive box Download PDFInfo
- Publication number
- CN201024968Y CN201024968Y CNU200720143951XU CN200720143951U CN201024968Y CN 201024968 Y CN201024968 Y CN 201024968Y CN U200720143951X U CNU200720143951X U CN U200720143951XU CN 200720143951 U CN200720143951 U CN 200720143951U CN 201024968 Y CN201024968 Y CN 201024968Y
- Authority
- CN
- China
- Prior art keywords
- automatic valve
- valve type
- joint
- packing
- gland
- 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
Links
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to an automatic valve type blowout proof case, mainly overcoming the prior disadvantage of the incapability of automatic well sealing. The utility model is characterized in that the inside of a body(1) is orderly provided with a packing set(2) and a press sleeve(3) on the upper part from the bellow to the above, wherein, the body(1) outside the upper part of the press sleeve(3) is connected with a press cap(4) of the corresponding cover press sleeve(3); and a lower ring-shaped cavity (5) is internally provided with a blowout proof ball (6), and the upper step hole of a lower joint of the lower ring-shaped cavity (5) is connected with a separating plate(8) with a longitudinal belt through hole through a screw thread, the lower part of the joint(7) is internally provided with a cone pipe screw thread. The breaking of the automatic valve type blowout proof case can achieve the automatic well sealing.
Description
Technical field:
The utility model relates to the used accessory of production wellhead in the oil recovery field, oil field, especially automatic valve formula blowout prevention box.
Background technology:
At present in recovering the oil in the oil field, production wellhead links to each other with oil pipe and sleeve pipe, be to control subsurface pressure and output crude oil, be connected with petroleum pipeline on the ground, provide and the oil well pump connector for oil pumper simultaneously, in order to prevent at rod broken or to cause blowout when changing packing, blowout preventer is installed in the well head upper end.And present when the blowout prevention box of installing on the production wellhead exists at rod broken owing to reasons in structure, can not shunt in a well automatically, so just cause a large amount of well liquid to leak, the waste resource, contaminated environment has increased the shaft mouth operation workload, and operating cost raises.
The utility model content:
In order to overcome the deficiency that existing blowout preventer can not be shunt in a well automatically, the utility model provides a kind of automatic valve formula blowout prevention box, and this automatic valve formula blowout prevention box can be shunt in a well when rod broken automatically.
The technical solution of the utility model is: this automatic valve formula blowout prevention box comprises main body, be equipped with packing and gland in the main body top from the bottom to top successively, be connected with the pressure cap that covers gland mutually on the outer main body in gland upper end, ring cavity is built-in with spray-proof ball under the packing, by the dividing plate of vertical band through hole that is threaded, joint has taper pipe thread in the bottom in the upper end of joint step hole of ring cavity lower end.
The beneficial effect that the utlity model has is: this automatic valve formula blowout prevention box is owing to adopted such scheme, and when rod broken, spray-proof ball is withstanding under the borehole pressure effect under the through hole of upper end, well head is closed, solved the problem that leaks of well liquid, avoided the generation of environmental pollution phenomenon, when changing packing, can be by the rotation pressure cap, packing is squeezed on the sucker rod, reaches the purpose of closing well, when sucker rod normally passes through, spray-proof ball is hidden to a side, guarantees the normal operation of producing.In sum, this automatic valve formula blowout prevention box can be shunt in a well when rod broken automatically, effectively reduces production costs.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model.
1-main body among the figure, 2-packing, 3-gland, 4-pressure cap, 5-ring cavity, 6-spray-proof ball, 7-joint, 8-dividing plate.
The specific embodiment:
Below in conjunction with accompanying drawing will the utility model is described in further detail:
By shown in Figure 1, this automatic valve formula blowout prevention box comprises main body 1, be equipped with packing 2 and gland 3 in main body 1 top from the bottom to top successively, be connected with the pressure cap 4 that covers gland 3 mutually outside gland 3 upper ends on the main body 1,2 times ring cavities 5 of packing are built-in with spray-proof ball 6, by the dividing plate 8 of vertical band through hole that is threaded, joint has taper pipe thread in 7 bottoms in 5 times end joints of ring cavity, the 7 upper end step holes.
During actual the use, at first pass sucker rod on the dividing plate 8 successively, the through hole on ring cavity 5 upper ends, packing 2, gland 3 and the pressure cap 4, be connected with production wellhead by the taper pipe thread in these automatic valve formula blowout prevention box joint 7 bottoms then, can normally use.When rod broken, the spray-proof ball 6 in the ring cavity 5 is closed well head automatically withstanding under the borehole pressure effect under the through hole of upper end, has solved the problem that leaks of well liquid, has avoided the generation of environmental pollution phenomenon.When changing packing, can packing be squeezed on the sucker rod by the rotation pressure cap, reach the purpose of closing well.When sucker rod normally passed through, spray-proof ball 6 was hidden to a side, guaranteed the normal operation of producing.In sum, this automatic valve formula blowout prevention box can be shunt in a well when rod broken automatically, effectively reduces production costs.
Claims (1)
1. automatic valve formula blowout prevention box, comprise main body (1), it is characterized in that: be equipped with packing (2) and gland (3) in main body (1) top from the bottom to top successively, be connected with the pressure cap (4) that covers gland (3) mutually on gland (3) the outer main body in upper end (1), packing (2) ring cavity (5) down is built-in with spray-proof ball (6), ring cavity (5) is the interior dividing plate (8) by vertical band through hole that is threaded of end joint (7) upper end step hole down, and joint (7) has taper pipe thread in the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720143951XU CN201024968Y (en) | 2007-04-16 | 2007-04-16 | Automatic valve type ejection preventive box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720143951XU CN201024968Y (en) | 2007-04-16 | 2007-04-16 | Automatic valve type ejection preventive box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024968Y true CN201024968Y (en) | 2008-02-20 |
Family
ID=39098825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720143951XU Expired - Fee Related CN201024968Y (en) | 2007-04-16 | 2007-04-16 | Automatic valve type ejection preventive box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024968Y (en) |
-
2007
- 2007-04-16 CN CNU200720143951XU patent/CN201024968Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201024974Y (en) | Sealer for cable penetrating under well | |
| CN204040979U (en) | Hi-pot test well low frictional resistance logging cable sealer | |
| CN201280908Y (en) | Borehole log wellhead double-sealing blowout preventer | |
| CN201567998U (en) | Drainage gas production well head sealed suspending device | |
| CN203097799U (en) | Inflatable oil-scraping self-sealing preventer | |
| CN201024968Y (en) | Automatic valve type ejection preventive box | |
| CN204703840U (en) | Slotted pipe completion is with exempting to bore plug stage cementing device | |
| CN111485854A (en) | Mine is with preventing spouting guarantor's gas joint in | |
| CN201460789U (en) | Low pressure wellhead cable seal tool | |
| CN204738779U (en) | Clean environment -friendly device of pumpingh well well head | |
| CN203978369U (en) | Combined type annular damper blowout hookup | |
| CN212225173U (en) | Mine is with preventing spouting guarantor's gas joint in | |
| CN202117611U (en) | Ram blowout preventer with self-sealing function | |
| CN205955691U (en) | Novel multi -functional blowout preventer | |
| CN202970551U (en) | Continuous sand washing device for integral joint tubing | |
| CN201982055U (en) | Multifunctional blowout preventer | |
| CN201401147Y (en) | Well blowout prevention device | |
| CN101705803A (en) | Well-flushing oil-drainage device of oil pumping pipe column | |
| CN202360057U (en) | Leather cup packer | |
| CN201883990U (en) | Compensation type annular blowout preventing device | |
| CN201031647Y (en) | Stop production well head packer | |
| CN201137472Y (en) | Flushing rotary oil rig tap flushing assembly | |
| CN202866736U (en) | Slurry blowout-prevention box | |
| CN203742521U (en) | Improved double-ram type preventer | |
| CN201221332Y (en) | Controllable orifice blowout prevention back-pressure apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20100416 |