CN210888866U - Blowout prevention large-pressure cap device - Google Patents
Blowout prevention large-pressure cap device Download PDFInfo
- Publication number
- CN210888866U CN210888866U CN201921972895.XU CN201921972895U CN210888866U CN 210888866 U CN210888866 U CN 210888866U CN 201921972895 U CN201921972895 U CN 201921972895U CN 210888866 U CN210888866 U CN 210888866U
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- CN
- China
- Prior art keywords
- pressure cap
- spring
- sealing plate
- blowout prevention
- polished rod
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- 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
A blowout prevention large pressure cap device, the oil extraction equipment field, mainly by the fixed plate, press the cap body, set screw hole, centre bore, upper seal plate, lower seal plate, spring, ring channel, grease nipple, polished rod hole, seal thread, press the outer wall of the cap to make up, for solving the pumping well polished rod when breaking and taking off, can't seal the problem of the well head, the utility model provides a blowout prevention large pressure cap, through optimizing the gland of the packing box, innovate the gland structure of the packing box, make the pumping unit realize the well head is sealed in the course of operation; the packing lubricating mechanism is added, so that the packing can be lubricated continuously and effectively, the well head is enabled to work in a safe state all the time, the phenomena of 'running, overflowing, dripping and leaking' are avoided, and the environmental pollution and safety accidents are reduced.
Description
Technical Field
The utility model relates to a christmas tree well head prevents spouting and presses cap greatly belongs to the oil production equipment field, concretely relates to prevent spouting and press cap device greatly.
Background
The oil pumping unit mainly seals a wellhead through a packing and a polished rod, and long-term operation can lead to packing abrasion, so that the wellhead leaks oil, and the wellhead leaks to cause large-area pollution in windy weather. Meanwhile, in the long-term operation process, the polished rod is broken and takes off due to heavy load or long service time of the polished rod, and after the polished rod is broken and takes off, the pressure in the well is released, a large amount of oil is sprayed from the packing box, so that the environmental pollution and the yield loss are caused. Usually, at sucker rod polished rod eye lower part installation anticreep checkpost, can bear whole sucker rod string weight in the well on the checkpost when checkpost upper portion polished rod breaks off, make the checkpost sit at the well head, but when anticreep checkpost lower part breaks off, do not have any measure and can seal the well head, only can rely on the inspection personnel to discover the back, close the well head flow, cut the pressure source, block the well head and leak.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a blowout prevention large pressure cap, which can realize well mouth sealing in the operation process of a pumping unit by optimizing a packing box gland and innovating a packing box gland structure; the packing lubricating mechanism is added, so that the packing can be lubricated continuously and effectively, the well head is enabled to work in a safe state all the time, the phenomena of 'running, overflowing, dripping and leaking' are avoided, and the environmental pollution and safety accidents are reduced.
The utility model provides a prevent spouting and press cap device greatly, the principle that mainly utilizes the spring makes two closing plates closely laminate the polished rod at polished rod operation in-process, does not harm the polished rod surface, can prevent that oil from going upward along with the polished rod and being taken out the packing box and cause a large amount of deletions of lubricating oil, in the twinkling of an eye that the polished rod breaks off, the spring in the pressure cap opens, two closing plate crisscross overlapping close the well head, prevent the oil gas leakage, press simultaneously to be designed with lubricated cavity in the cap, no matter whether the oil well is out of oil, intermittent type goes out oil well polished rod and is in good.
A blowout prevention large pressure cap device mainly comprises a fixing plate, a pressure cap body, a fixing screw hole, a center hole, an upper sealing plate, a lower sealing plate, a spring, an annular groove, a grease nipple, a polish rod hole, a sealing thread and a pressure cap outer wall, and aims to solve the problem that a well mouth cannot be sealed when a polish rod of an oil pumping well is broken and separated.
The blowout prevention large-pressure cap device is characterized in that: the pressure cap body lower extreme is interior to have sealed screw thread and the outside screw thread hookup on the well head packing box, presses cap body upper end to have the length to be 150mm, width 100 mm's square box, and the border has 6 screw holes to distribute on pressing the cap, and inside has the centre bore, and the polished rod can pass wherein. The integral structure adopts No. 45 quenched and tempered steel.
The blowout prevention large-pressure cap device is characterized in that: the square box is internally provided with a groove with the depth of 2 cm.
The blowout prevention large-pressure cap device is characterized in that: two sides of the inner wall of the groove are respectively provided with an annular hollow cylinder. The spring is arranged in an annular groove formed on the outer side of the cylinder.
The blowout prevention large-pressure cap device is characterized in that: an upper sealing plate and a lower sealing plate are arranged in the box body, one end of the sealing plate is an arc-shaped groove, and the other end of the sealing plate is provided with a groove for placing a spring.
The blowout prevention large-pressure cap device is characterized in that: one end of the spring is placed on the sealing plate, and the other end of the spring is placed in the annular groove in the inner wall of the pressure cap.
The blowout prevention large-pressure cap device is characterized in that: the upper end and the fixed plate of square box are connected, and fixed plate length is 150mm, width 100mm, and thickness is 3mm six screw holes that distribute, and the centre is a diameter 30's centre bore.
The blowout prevention large-pressure cap device is characterized in that: the upper sealing plate and the lower sealing plate are closed in a staggered mode under the action of the spring. When the polish rod works normally, the spring is compressed, and the two arc-shaped grooves of the sealing plate are tightly attached to the surface of the polish rod. The sealing plate is made of polyurethane, and is high-temperature resistant and wear resistant.
The blowout prevention large-pressure cap device is characterized in that: the pressure caps are respectively provided with a grease nipple, so that lubricating grease can be injected into the spring and the pressure cover periodically, the lubrication of the spring is ensured, and meanwhile, the durable lubrication is realized on the polish rod.
The utility model has the advantages that: the utility model discloses can realize sealed well head, guarantee continuous lubrication packing and polished rod, this device simple structure, the installation is swift, convenient to use, bearing capacity is strong. The practicality is strong and be convenient for make and install. The potential safety hazard that the prior packing box can not seal the well mouth when the polish rod is broken and taken off is thoroughly overcome. The problem of when the polished rod breaks off, pollution and well head polished rod and packing lack lubricating oil and lead to the well head not sealed that well head oil leakage caused is solved. At present, the oil well is used at the well mouth of a part of oil wells of two oil extraction plants of North China oil field company, and the effect is better.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 and 2 are schematic views of the main and top views of the blowout-preventing large-pressure cap of the present invention. Fig. 3 is a schematic view of the top view component structure of the present invention;
in fig. 1 and 2: 1. a fixing plate; 2. a pressing cap body; 3. a set screw hole; 4. a central bore; 5. an upper sealing plate; 6. a lower sealing plate; 7. a spring; 8. an annular groove; 9. a grease nipple; 10. a polished rod hole; 11. sealing the threads; 12. the outer wall of the pressing cap.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
The present invention will be described in further detail with reference to the following embodiments, and fig. 1 is a schematic view of the main view and the overlooking structure of the specific implementation of the blowout prevention large pressure cap of the present invention.
A blowout prevention large-pressure cap device is composed of a fixing plate (1), a pressure cap body (2), a fixing screw hole (3), a center hole (4), an upper sealing plate (5), a lower sealing plate (6), a spring annular groove (7), a grease nipple (8), a polish rod hole (9), a sealing thread (10) and a pressure cap outer wall (11). Firstly, the spring is arranged between the annular groove and the sealing plate, after the upper seal and the lower seal are both arranged, the spring is opened, and the center of the gland is sealed. At this time, the fixing plate is covered on the pressing cap body, and the fixing plate and the pressing cap body are fastened by six fixing bolts. And (3) the two sealing plates are spread by a flat-head crow bar, a polish rod is penetrated, the lower sealing threads of the polish rod are connected with the external threads of the packing box filled with the packing, and the polish rod is fastened. And injecting sealing grease from the grease nipple of the pressing cap. After the well is opened, the sealing grease can move up and down along with the polish rod to lubricate the polish rod and the packing, and the oil brought out during moving up is blocked back into the pressure cap through the sealing plate.
The utility model discloses a can solve the problem that the unable sealed well head of packing box when the polished rod takes off absolutely effectively, play fine lubricated effect to polished rod and packing simultaneously. The device has the advantages of simple structure, quick installation and convenient use, and can fully and effectively reduce polished rod dry-grinding packing and seal a wellhead. The safety is high, long service life, and the practicality is strong and is convenient for make and install.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a prevent spouting and press cap device greatly, mainly by the fixed plate, press cap body, set screw hole, centre bore, upper seal plate, lower closing plate, spring, ring channel, grease nipple, polished rod hole, sealed screw, press the cap outer wall to constitute its characterized in that: the pressure cap body lower extreme is interior to have the outside screw thread hookup on sealing thread and the well head packing box, and pressure cap body upper end has the square box that length is 150mm, width 100mm, and the border has 6 screw holes to distribute on pressing the cap, and inside has the centre bore, and the polished rod can pass wherein, and overall structure adopts No. 45 quenched and tempered steels.
2. A blowout prevention high pressure cap apparatus according to claim 1, wherein: the square box is internally provided with a groove with the depth of 2 cm.
3. A blowout prevention high pressure cap apparatus according to claim 1, wherein: two sides of the inner wall of the groove are respectively provided with an annular hollow cylinder, and a spring is arranged in an annular groove formed on the outer side of the cylinder.
4. A blowout prevention high pressure cap apparatus according to claim 1, wherein: an upper sealing plate and a lower sealing plate are arranged in the box body, one end of the sealing plate is an arc-shaped groove, and the other end of the sealing plate is provided with a groove for placing a spring.
5. A blowout prevention high pressure cap apparatus according to claim 1, wherein: one end of the spring is placed on the sealing plate, and the other end of the spring is placed in the annular groove in the inner wall of the pressure cap.
6. A blowout prevention high pressure cap apparatus according to claim 1, wherein: the upper end and the fixed plate of square box are connected, and fixed plate length is 150mm, width 100mm, and thickness is 3mm six screw holes that distribute, and the centre is a diameter 30's centre bore.
7. A blowout prevention high pressure cap apparatus according to claim 1, wherein: the upper sealing plate and the lower sealing plate are closed in a staggered mode under the action of the spring, the spring is compressed when the sealing plate works normally, the two arc-shaped grooves of the sealing plate are tightly attached to the surface of the polished rod, and the sealing plate is made of polyurethane and is high-temperature-resistant and wear-resistant.
8. A blowout prevention high pressure cap apparatus according to claim 1, wherein: the pressure caps are respectively provided with a grease nipple, so that lubricating grease can be injected into the spring and the pressure cover periodically, the lubrication of the spring is ensured, and meanwhile, the durable lubrication is realized on the polish rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921972895.XU CN210888866U (en) | 2019-11-15 | 2019-11-15 | Blowout prevention large-pressure cap device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921972895.XU CN210888866U (en) | 2019-11-15 | 2019-11-15 | Blowout prevention large-pressure cap device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210888866U true CN210888866U (en) | 2020-06-30 |
Family
ID=71340752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921972895.XU Expired - Fee Related CN210888866U (en) | 2019-11-15 | 2019-11-15 | Blowout prevention large-pressure cap device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210888866U (en) |
-
2019
- 2019-11-15 CN CN201921972895.XU patent/CN210888866U/en not_active Expired - Fee Related
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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: 20200630 Termination date: 20211115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |