CN217950328U - Improved blowout prevention pressure cap - Google Patents
Improved blowout prevention pressure cap Download PDFInfo
- Publication number
- CN217950328U CN217950328U CN202222283975.2U CN202222283975U CN217950328U CN 217950328 U CN217950328 U CN 217950328U CN 202222283975 U CN202222283975 U CN 202222283975U CN 217950328 U CN217950328 U CN 217950328U
- Authority
- CN
- China
- Prior art keywords
- unthreaded hole
- spring
- theft
- pressure cap
- hole
- 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
- 230000002265 prevention Effects 0.000 title claims description 15
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 238000012856 packing Methods 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 19
- 238000005086 pumping Methods 0.000 abstract description 17
- 239000003129 oil well Substances 0.000 abstract description 7
- 239000010779 crude oil Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241001023788 Cyttus traversi Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses an improved generation prevents spouting pressure cap belongs to the bipolar packing box technical field of oil well wellhead, it includes the body assembly, install inside ball sealer and the theftproof blanking cover assembly of body assembly, wherein, be provided with the sealing washer between theftproof blanking cover assembly and the body assembly, theftproof blanking cover assembly includes the theftproof blanking cover, adopt spring catch to fix the spring on the theftproof blanking cover, adopt spring catch to fix the clamp plate at the spring other end, the clamp plate butt is on the ball sealer, before the oil pumping polished rod splits, the ball sealer is fixed between clamp plate and oil pumping polished rod, after the oil pumping polished rod splits, the oil pumping polished rod will fall and then the ball sealer gets into sucker rod installing through-hole under the promotion of spring, automatic sealing sucker rod installing through-hole under the effect of pressure, and then can be under the circumstances self-sealing well head of unmanned operation when unmanned on duty meets the polished rod short break, avoid causing crude oil leakage, environmental pollution.
Description
Technical Field
The utility model relates to an oil well wellhead bipolar packing box technical field especially relates to an improved generation prevents spouting pressure cap.
Background
During oil field production, under the reciprocal promotion of horse head machine, make the polished rod reciprocating motion in the oil well, and then make the oil pump of polished rod bottom be piston motion in the oil well, realize the exploitation of oil, it seals to set up polished rod sealing ware between polished rod and the oil well usually to port department in the oil well, be provided with the packing in the polished rod sealing ware, the outside and the polished rod sealing ware internal seal of packing, the inboard and polished rod sliding friction of packing, and then realize the sealed to the polished rod, at the in-process of polished rod reciprocating motion, because the installation deviation, reasons such as well head skew or basic settlement, make polished rod and well head not centering, and then the partial wear of polished rod to the packing appears, seriously influence the leakproofness between polished rod and the polished rod.
Although the lower end of the existing oil well wellhead bipolar packing box is provided with the quick-closing manual ball valve, most well sites belong to unattended well sites, once a polished rod is cracked, personnel cannot control the well site in a short time, crude oil leakage and environmental pollution are caused, and an environmental protection event is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides an improved generation prevents spouting and presses cap aims at solving foretell technical defect.
The utility model provides a specific technical scheme as follows:
the utility model provides a pair of improved generation is prevented spouting and is pressed cap includes the body assembly, installs the inside ball sealer and the theftproof blanking cover assembly of body assembly, wherein, the theftproof blanking cover assembly with be provided with the sealing washer between the body assembly, the theftproof blanking cover assembly includes the theftproof blanking cover, adopts spring catch to fix spring on the theftproof blanking cover, adopt spring catch to fix the clamp plate of the spring other end, the clamp plate butt is in on the ball sealer.
Optionally, the body assembly comprises a body and a threaded branch pipe fixed on the body, and an included angle between the central axes of the body and the threaded branch pipe is 60-85 °.
Optionally, the body and the threaded branch pipe are welded and fixed or the body and the threaded branch pipe are integrally cast and formed.
Optionally, the body is provided with a first unthreaded hole, a second unthreaded hole, a third unthreaded hole, a fourth unthreaded hole and a fifth unthreaded hole, wherein the first unthreaded hole, the second unthreaded hole, the third unthreaded hole and the fourth unthreaded hole are concentrically arranged, the first unthreaded hole, the second unthreaded hole, the third unthreaded hole and the fourth unthreaded hole are mutually communicated to form a sucker rod mounting through hole, the fifth unthreaded hole is mutually communicated with the second unthreaded hole, and an included angle between central axes of the fifth unthreaded hole and the second unthreaded hole is 60 ° to 85 °.
Optionally, the diameters of the first optical hole and the third optical hole are both smaller than the diameter of the sealing ball, and the diameters of the second optical hole and the fifth optical hole are both larger than the diameter of the sealing ball.
Optionally, the diameter of the fourth unthreaded hole is greater than the diameters of the first unthreaded hole, the second unthreaded hole, the third unthreaded hole and the fifth unthreaded hole, and a packing seal ring mounting groove is formed in the side wall of the fourth unthreaded hole.
Optionally, the anti-theft plug cover is installed in the threaded branch pipe in a threaded connection mode, a pentagonal inner counter bore is formed in the end portion of the anti-theft plug cover, and the sealing ring is installed at the joint of the anti-theft plug cover and the threaded branch pipe.
Optionally, the sealing ball is located at a connection position of the threaded branch pipe and the body, and the spring is in a compressed state when abutting against the sealing ball.
The utility model discloses following beneficial technological effect has:
the embodiment of the utility model provides an improved generation prevents spouting pressure cap includes the body assembly, install inside ball sealer and the theftproof blanking cover assembly of body assembly, wherein, be provided with the sealing washer between theftproof blanking cover assembly and the body assembly, theftproof blanking cover assembly includes the theftproof blanking cover, adopt the spring that spring catch fixed on the theftproof blanking cover, adopt the spring catch to fix the clamp plate at the spring other end, the clamp plate butt is on the ball sealer, before the oil pumping polished rod splits, the ball sealer is fixed between clamp plate and oil pumping polished rod, after the oil pumping polished rod splits, the oil pumping polished rod will fall and then the ball sealer gets into sucker rod mounting hole under the promotion of spring, automatically block sucker rod mounting hole under the effect of pressure, and then can be under the circumstances of unmanned operation self-sealing well head when unmanned on duty well site meets the polished rod short break, avoid causing crude oil leakage, environmental pollution.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an improved blowout prevention pressure cap according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a body assembly according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an anti-theft block cover assembly according to an embodiment of the present invention;
fig. 4 is a schematic view illustrating the non-broken operation of the polished pumping rod of the improved blowout prevention pressure cap according to the embodiment of the present invention;
fig. 5 is a schematic view of the operation of the improved blowout prevention pressure cap after the oil pumping rod is broken according to the embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
An improved blowout prevention pressure cap according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 5.
Referring to fig. 1-5, an embodiment of the present invention provides an improved blowout prevention pressure cap, which comprises a body assembly 4, a sealing ball 3 and an anti-theft cap assembly 1, wherein the sealing ball 3 and the anti-theft cap assembly 1 are installed inside the body assembly 4, a sealing ring 2 is disposed between the anti-theft cap assembly 1 and the body assembly 4, the anti-theft cap assembly 1 comprises an anti-theft cap 101, a spring 103 fixed on the anti-theft cap 101 by a spring catch 102, a pressing plate 104 fixed at the other end of the spring 103 by the spring catch 102, and the pressing plate 104 abuts against the sealing ball 3. Referring to fig. 4 and 5, before the rod 5 is broken, the ball 3 is held between the pressing plate 104 and the rod 5 by the elastic force of the spring 103, that is, the ball 3 is sandwiched by the pressing plate 104 and the rod 5 before the rod 5 is broken. After 5 fracture of oil pumping polished rod, oil pumping polished rod 5 will fall and then the ball sealer breaks away from the effect of oil pumping polished rod 5, because ball sealer 3 is the rubber ball sealer, and then gets into sucker rod installation through-hole under the promotion of spring 103, seals sucker rod installation through-hole automatically under the effect of pressure, and then can be under unmanned operation's the condition self-sealing well head when unmanned on duty well site meets the polished rod short crack, avoids causing crude oil leakage, environmental pollution.
Referring to fig. 1, 2 and 3, the body assembly 4 includes a body 401 and a threaded branch pipe 402 fixed on the body 401, and an included angle between central axes of the body 401 and the threaded branch pipe 402 is 60-85 °, so that when the sucker rod 5 is broken, the sealing ball 3 can smoothly enter the sucker rod mounting through hole under the urging of the spring 103 to realize automatic wellhead closure. The body 401 and the threaded branch pipe 402 are welded and fixed or the body 401 and the threaded branch pipe 402 are integrally cast and molded.
Referring to fig. 1, 2 and 3, a body 401 is provided with a first light hole 403, a second light hole 404, a third light hole 405, a fourth light hole 406 and a fifth light hole 407, wherein the first light hole 403, the second light hole 404, the third light hole 405 and the fourth light hole 406 are concentrically arranged, the first light hole 403, the second light hole 404, the third light hole 405 and the fourth light hole 406 are mutually communicated to form a sucker rod mounting through hole, the fifth light hole 407 is mutually communicated with the second light hole 404, an included angle between central axes of the fifth light hole 407 and the second light hole 404 is 60-85 °, that is, the fifth light hole 407 is concentrically arranged with the threaded branch pipe 402, and the second light hole 404 is concentrically arranged with the body 401.
Referring to fig. 1, 2 and 3, the diameters of the first light hole 403 and the third light hole 405 are both smaller than the diameter of the sealing ball 3, the diameters of the second light hole 404 and the fifth light hole 407 are both larger than the diameter of the sealing ball 3, so that the sealing ball smoothly enters the second light hole 404 through the fifth light hole 407 under the pushing of the spring 103, and the first light hole 403 or the third light hole 405 is closed under the action of the difference between the upper and lower pressures because the diameters of the first light hole 403 and the third light hole 405 are both smaller than the diameter of the sealing ball 3.
Referring to fig. 1, 2 and 3, the diameter of the fourth unthreaded hole 406 is larger than the diameters of the first unthreaded hole 403, the second unthreaded hole 404, the third unthreaded hole 405 and the fifth unthreaded hole 407, that is, the diameter of the fourth unthreaded hole 406 is the largest, and a packing ring installation groove 408 is formed in the side wall of the fourth unthreaded hole 406 for installing a packing ring to realize dynamic sealing between the polish rod 5 and the body 401. The anti-theft plug cover 101 is installed in the threaded branch pipe 402 through threaded connection, the end portion of the anti-theft plug cover 101 is provided with a pentagonal inner counter bore 105, the pentagonal inner counter bore 105 is used for being matched with a pentagonal inner wrench to achieve detachment of the anti-theft plug cover 101, the sealing ring 2 is installed on a contact surface of a joint of the anti-theft plug cover 101 and the threaded branch pipe 102, and the sealing ring 2 is used for achieving sealing between the anti-theft plug cover 101 and the threaded branch pipe 102.
Referring to fig. 4, before the sucker rod 5 is broken, the sealing ball 3 is located at the joint of the threaded branch pipe 402 and the body 401, and the sealing ball 3 is sandwiched by the pressing plate 104 and the sucker rod 5, and the spring 103 abuts on the sealing ball 3 and is in a compressed state. Furthermore, referring to fig. 5, after the polish rod 5 is broken, the polish rod 5 falls down and the sealing ball gets rid of the action of the polish rod 5, enters the rod mounting through hole under the pushing of the spring 103, and automatically seals the first unthreaded hole 403 or the third unthreaded hole 405 under the action of pressure, so that the wellhead can be automatically sealed under the condition of unmanned operation when the polish rod is cracked in an unattended well site, and crude oil leakage and environmental pollution are avoided.
The embodiment of the utility model provides an improved generation prevents spouting pressure cap includes the body assembly, install inside ball sealer and the theftproof blanking cover assembly of body assembly, wherein, be provided with the sealing washer between theftproof blanking cover assembly and the body assembly, theftproof blanking cover assembly includes the theftproof blanking cover, adopt the spring that spring catch fixed on the theftproof blanking cover, adopt the spring catch to fix the clamp plate at the spring other end, the clamp plate butt is on the ball sealer, before the oil pumping polished rod splits, the ball sealer is fixed between clamp plate and oil pumping polished rod, after the oil pumping polished rod splits, the oil pumping polished rod will fall and then the ball sealer gets into sucker rod mounting hole under the promotion of spring, automatically block sucker rod mounting hole under the effect of pressure, and then can be under the circumstances of unmanned operation self-sealing well head when unmanned on duty well site meets the polished rod short break, avoid causing crude oil leakage, environmental pollution.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The improved blowout prevention pressure cap is characterized by comprising a body assembly, a sealing ball and an anti-theft plugging cover assembly, wherein the sealing ball and the anti-theft plugging cover assembly are mounted inside the body assembly, a sealing ring is arranged between the anti-theft plugging cover assembly and the body assembly, the anti-theft plugging cover assembly comprises an anti-theft plugging cover, a spring on the anti-theft plugging cover is fixed by a spring separation blade, a pressing plate at the other end of the spring is fixed by the spring separation blade, and the pressing plate is abutted to the sealing ball.
2. The improved blowout prevention pressure cap according to claim 1, wherein the body assembly comprises a body and a threaded branch pipe fixed on the body, and an included angle between central axes of the body and the threaded branch pipe is 60-85 degrees.
3. The improved blowout prevention pressure cap of claim 2, wherein the body and the threaded leg are welded together or are integrally cast together.
4. The improved blowout prevention pressure cap according to claim 2, wherein the body is provided with a first unthreaded hole, a second unthreaded hole, a third unthreaded hole, a fourth unthreaded hole and a fifth unthreaded hole, wherein the first unthreaded hole, the second unthreaded hole, the third unthreaded hole and the fourth unthreaded hole are concentrically arranged, the first unthreaded hole, the second unthreaded hole, the third unthreaded hole and the fourth unthreaded hole are communicated with each other to form a sucker rod mounting through hole, the fifth unthreaded hole is communicated with the second unthreaded hole, and an included angle between central axes of the fifth unthreaded hole and the second unthreaded hole is 60-85 °.
5. The improved blowout prevention pressure cap of claim 4, wherein the first and third bores each have a diameter less than the diameter of the sealing ball, and the second and fifth bores each have a diameter greater than the diameter of the sealing ball.
6. The improved blowout prevention pressure cap of claim 4, wherein the diameter of the fourth unthreaded hole is larger than the diameters of the first unthreaded hole, the second unthreaded hole, the third unthreaded hole and the fifth unthreaded hole, and a packing ring mounting groove is arranged on a side wall of the fourth unthreaded hole.
7. The improved blowout prevention pressure cap according to claim 2, wherein the anti-theft plug is installed inside the threaded branch pipe by adopting threaded connection, a pentagonal inner counter bore is formed in the end of the anti-theft plug, and the sealing ring is installed at the joint of the anti-theft plug and the threaded branch pipe.
8. The improved blowout prevention pressure cap of claim 7 wherein the sealing ball is located at the junction of the threaded leg and the body, the spring being in compression when abutting against the sealing ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222283975.2U CN217950328U (en) | 2022-08-30 | 2022-08-30 | Improved blowout prevention pressure cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222283975.2U CN217950328U (en) | 2022-08-30 | 2022-08-30 | Improved blowout prevention pressure cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217950328U true CN217950328U (en) | 2022-12-02 |
Family
ID=84212109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222283975.2U Expired - Fee Related CN217950328U (en) | 2022-08-30 | 2022-08-30 | Improved blowout prevention pressure cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217950328U (en) |
-
2022
- 2022-08-30 CN CN202222283975.2U patent/CN217950328U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202520265U (en) | Gas production well head device with metallic seals | |
| CN211370338U (en) | Self-adaptive large-angle eccentric wear prevention wellhead sealing device | |
| CN2937459Y (en) | Double-offset polish rod sealer for pumping well | |
| CN108240195A (en) | Polished rod sealer | |
| CN105089538A (en) | Sealing structure of rod oil producing wellhead polish rod | |
| CN217950328U (en) | Improved blowout prevention pressure cap | |
| CN104695888A (en) | Automatic backflow wellhead sealer | |
| CN210087277U (en) | High-pressure-bearing oil production wellhead device | |
| CN204691721U (en) | A kind of hermetically-sealed construction having bar production wellhead polished rod | |
| CN104405325A (en) | Multifunctional polish rod sealer of pumping well | |
| CN201330576Y (en) | Well head gushing-proof device for water injection well test | |
| CN201068795Y (en) | Wellhead pressure test device | |
| CN212054584U (en) | Pumping well polish rod sealing device | |
| CN220890156U (en) | Novel oil drilling leaking stoppage subassembly | |
| CN203626692U (en) | Automatic backflow type well head sealing device | |
| CN208587126U (en) | A kind of polished rod sealer | |
| CN214789379U (en) | Sealing stuffing box with multiple sealing structures | |
| CN108775231B (en) | Replaceable polish rod blowout-preventing packing box | |
| CN210687225U (en) | Valve seat sealing device of high-pressure valve for petroleum wellhead | |
| CN218266582U (en) | Multi-sealing material ejection cylinder of screw press | |
| CN215565836U (en) | Wellhead hydraulic sealing blowout preventer for steel wire operation | |
| CN212272115U (en) | Double-plate check valve | |
| CN214697780U (en) | Self-adjusting pump rod blowout prevention box for coal bed gas | |
| CN204312012U (en) | Jack well multifunctional polished rod sealer | |
| CN205297441U (en) | Screw seal device for oil pumping unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |