CN213297900U

CN213297900U - Oilfield wellhead blowout preventer capable of plugging pressure test

Info

Publication number: CN213297900U
Application number: CN202021948718.0U
Authority: CN
Inventors: 葛树杰
Original assignee: Daqing Hanyu Petroleum Technology Co ltd
Current assignee: Daqing Hanyu Petroleum Technology Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-05-28
Anticipated expiration: 2030-09-08

Abstract

The utility model relates to a technical field is made in the oil machinery design, specifically is an oil field well head preventer that can shutoff pressure testing, and it can cushion the pressure that the blowout was brought, reduces the pressure of applying to seal structure, has reached more effectual sealed effect, prolongs oil field well head preventer life, and the practicality of improving device to consolidate seal structure's sealed effect, improve device's reliability, including the casing, its characterized in that: the left inside wall downside of casing has seted up the recess, the inside fixedly connected with pressure sensor of recess, two sets of fixed blocks of even fixedly connected with on the inside circumference of casing, two sets of fixed blocks are close to the equal fixedly connected with mount of one end at casing center, the bottom of mount is rotated through the bearing and is connected with the pivot, even fixedly connected with electric oar on the outside downside circumference of pivot, the top of casing is through first fixing bolt fixedly connected with bearing plate, the bottom fixedly connected with extrusion post of bearing plate.

Description

Oilfield wellhead blowout preventer capable of plugging pressure test

Technical Field

The utility model relates to a technical field is made in the oil machinery design specifically is a but oilfield wellhead blowout preventer of shutoff pressure testing.

Background

As is known, the blowout preventer is used for closing a wellhead to prevent blowout accidents in the operation processes of oil testing, well workover, well completion and the like, integrates the full sealing function and the half sealing function into a whole, has the characteristics of simple structure, easy operation, high pressure resistance and the like, and is a safe wellhead sealing device for preventing blowout commonly used in oil fields.

The existing oilfield wellhead blowout preventer cannot bear high pressure generated when a blowout well closes or reverse circulation operation is carried out in the using process, and after the blowout preventer is used for a long time, the phenomenon of leakage is easy to occur at the connection part of the oilfield wellhead blowout preventer, and the sealing effect of the blowout preventer is reduced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a can cushion the pressure that the blowout brought, reduce the pressure of applying to seal structure, reach more effectual sealed effect, prolong oil field well head preventer life, improve device's practicality to consolidate seal structure's sealed effect, improve device's reliability can shutoff oil field well head preventer of pressure testing.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: an oilfield wellhead blowout preventer capable of plugging pressure testing comprises a shell, wherein a groove is formed in the lower side of the left inner side wall of the shell, a pressure sensor is fixedly connected inside the groove, two groups of fixing blocks are uniformly and fixedly connected to the inner circumference of the shell, a fixing frame is fixedly connected to one end, close to the center of the shell, of the two groups of fixing blocks, the bottom end of the fixing frame is rotatably connected with a rotating shaft through a bearing, an electric paddle is uniformly and fixedly connected to the circumference of the lower side outside the rotating shaft, a bearing plate is fixedly connected to the top end of the shell through a first fixing bolt, an extrusion column is fixedly connected to the bottom end of the bearing plate, a supporting plate is fixedly connected to the left side and the right side of the bottom end of the bearing plate, a wear-resistant pad is fixedly connected to the bottom end of the supporting plate, four L-shaped plates are, the top fixedly connected with of L template connects the cover, connects the inside of cover and is provided with seal assembly.

Preferably, seal assembly includes electronic jar, the one end at casing center and the inside wall fixed connection of connecting cover are kept away from to electronic jar, and electronic jar is close to the one end fixedly connected with fan-shaped piece at casing center, four inside and outside logical grooves of lining up are evenly seted up to the outside of casing, the one end that fan-shaped piece is close to the casing center runs through logical groove and extends to the inside of casing, the lateral wall and the casing sliding connection of fan-shaped piece.

Preferably, a sealing sleeve is arranged outside the sector block, and the inner side wall of the sealing sleeve is fixedly connected with the outer side wall of the sector block.

Preferably, the top end of the bearing plate is fixedly connected with a bearing block.

Preferably, the left end and the right-hand member downside of squeeze post all are provided with the support column, and the one end at bearing plate center and the inside wall fixed connection of casing are kept away from to the support column.

Preferably, a flange is fixedly connected to the bottom end of the housing.

(III) advantageous effects

Compared with the prior art, the utility model provides a but oilfield wellhead blowout preventer of shutoff pressure testing possesses following beneficial effect:

this but oil field well head preventer of shutoff pressure testing, when the oil got into oil field well head preventer, pressure sensor can experience the pressure that the oil brought and give electronic oar with signal transmission, two sets of electronic oars rotate and exert pressure downwards, can cushion the pressure that the blowout brought, reduce the pressure of exerting to seal structure, electronic jar promotes fan-shaped piece simultaneously, fan-shaped piece and extrusion post combine closely, form confined space, reach more effectual sealed effect, and through the support of backup pad, improve the steadiness of device, extension oil field well head preventer life, the setting of bearing block can increase self weight for the bearing plate, the effectual pressure that reduces the blowout production, avoid the emergence of blowout accident, and the pressure raising device has the advantages of reasonable design, moreover, the steam generator is simple in structure, high durability, the sexual valence, preventer long service life's is showing.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the top view structure of the connection of the electric cylinder, the extrusion column, the sector block and the like of the present invention;

fig. 3 is a schematic view of the structure of the utility model showing the connection between the fixing frame, the rotating shaft and the electric paddle.

In the figure: 1. a housing; 2. a pressure sensor; 3. a fixed block; 4. a fixed mount; 5. a bearing; 6. a rotating shaft; 7. an electric paddle; 8. a first fixing bolt; 9. a bearing plate; 10. extruding the column; 11. a support plate; 12. A wear pad; 13. an L-shaped plate; 14. a second fixing bolt; 15. a connecting cover; 16. a seal assembly; 17. An electric cylinder; 18. a sector block; 19. sealing sleeves; 20. a bearing block; 21. a support pillar; 22. a flange; 23. a through groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, a blowout preventer for oil field wellhead capable of plugging pressure testing comprises a housing 1, a groove is formed on the lower side of the left inner side wall of the housing 1, a pressure sensor 2 is fixedly connected inside the groove to facilitate timely sensing of pressure caused by rising of oil, two groups of fixing blocks 3 are uniformly and fixedly connected to the inner circumference of the housing 1 to facilitate fixing of an electric propeller 7 to the housing 1, a fixing frame 4 is fixedly connected to one end of each group of fixing blocks 3 close to the center of the housing 1 to improve the stability of the electric propeller 7 and prevent oil from shifting and scattering due to impact, a rotating shaft 6 is rotatably connected to the bottom end of the fixing frame 4 through a bearing 5, the electric propeller 7 is driven to rotate to achieve a buffering effect, the electric propeller 7 is uniformly and fixedly connected to the circumference of the outer lower side of the rotating shaft 6 to generate a reaction force, the top end of the shell 1 is fixedly connected with a bearing plate 9 through a first fixing bolt 8 to play a role in sealing and weighing, the bottom end of the bearing plate 9 is fixedly connected with an extrusion column 10, the extrusion column 10 is matched with a movable sector block 18 to form a sealing structure, the left side and the right side of the bottom end of the bearing plate 9 are fixedly connected with a support plate 11, the bottom end of the support plate 11 is fixedly connected with a wear-resistant pad 12 to ensure the integrity of the sector block 18 and the support plate 11, four L-shaped plates 13 are uniformly arranged outside the shell 1 to play a role in fixing a connecting cover 15 and simultaneously facilitate installation and disassembly, one ends of the four L-shaped plates 13 close to the center of the shell 1 are fixedly connected with the outer side wall of the shell 1 through a plurality of second fixing bolts 14, the top end of the L-shaped plates 13 is fixedly connected with the connecting cover 15 to form a closed space by being matched, the inside of the connecting cover 15 is provided with a sealing component 16, and the sector block 18 is tightly combined with the extrusion column 10 to form a sealing space, so that a more effective sealing effect is achieved.

It should be further noted that the sealing assembly 16 includes an electric cylinder 17, one end of the electric cylinder 17 far from the center of the housing 1 is fixedly connected to the inner sidewall of the connecting cover 15, one end of the electric cylinder 17 near the center of the housing 1 is fixedly connected to a sector block 18, the four sector blocks 18 are tightly combined with the extrusion column 10 to form a sealed space, so as to achieve a sealing effect, four through grooves 23 are uniformly formed in the exterior of the housing 1, so that the sector block 18 can slide into the interior of the housing 1, one end of the sector block 18 near the center of the housing 1 extends into the interior of the housing 1 through the through groove 23, the outer sidewall of the sector block 18 is slidably connected to the housing 1, a sealing sleeve 19 is disposed in the exterior of the sector block 18, the inner sidewall of the sealing sleeve 19 is fixedly connected to the outer sidewall of the sector block 18, so as to enhance the sealing effect and avoid leakage, the top end of the, in order to increase self weight for bearing plate 9, effectual pressure that reduces the blowout production, avoid the emergence of blowout accident, the left end and the right-hand member downside of squeeze column 10 all are provided with support column 21, the one end at bearing plate 9 center and casing 1's inside wall fixed connection are kept away from to support column 21, prevent squeeze column 10 because the impact of oil takes place to rock, improve the steadiness, casing 1's bottom fixedly connected with flange 22, be convenient for fix with other equipment, improve the convenience.

To sum up, this oil field well head preventer that can block pressure testing, when using, at first pass through flange 22 with the oil field well head preventer that this can block pressure testing and be connected with the equipment that corresponds, the oil gets into oil field well head preventer, pressure sensor 2 can feel the pressure that the oil brought and give electronic oar 7 with signal transmission, two sets of electronic oars 7 rotate and exert pressure downwards, can cushion the pressure that the blowout brought, electronic jar 17 promotes fan-shaped piece 18 to casing 1 central direction simultaneously, until forming confined space with extrusion column 10 zonulae occludens, and through the setting of seal cover 19, strengthen sealed effect, the self weight of bearing block 20 is used in on bearing plate 9, and exert on fan-shaped piece 18 through backup pad 11 and offset with the pressure that the blowout brought, reach the emergence that prevents the blowout accident.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a but shutoff pressure testing's oil field well head preventer, includes casing (1), its characterized in that: the lower side of the left inner side wall of the shell (1) is provided with a groove, the inner part of the groove is fixedly connected with a pressure sensor (2), the inner circumference of the shell (1) is uniformly and fixedly connected with two groups of fixed blocks (3), one ends of the two groups of fixed blocks (3) close to the center of the shell (1) are fixedly connected with a fixed frame (4), the bottom end of the fixed frame (4) is rotatably connected with a rotating shaft (6) through a bearing (5), the outer circumference of the lower side of the rotating shaft (6) is uniformly and fixedly connected with an electric paddle (7), the top end of the shell (1) is fixedly connected with a bearing plate (9) through a first fixing bolt (8), the bottom end of the bearing plate (9) is fixedly connected with an extrusion column (10), the left side and the right side of the bottom end of the bearing plate (9) are both fixedly, the outer portion of the shell (1) is evenly provided with four L-shaped plates (13), one ends, close to the center of the shell (1), of the four L-shaped plates (13) are fixedly connected with the outer side wall of the shell (1) through a plurality of second fixing bolts (14), the top end of each L-shaped plate (13) is fixedly connected with a connecting cover (15), and a sealing assembly (16) is arranged inside each connecting cover (15).

2. The oilfield wellhead blowout preventer capable of plugging and testing pressure according to claim 1, wherein the oilfield wellhead blowout preventer comprises: seal assembly (16) are including electronic jar (17), the one end at casing (1) center and the inside wall fixed connection of connecting cover (15) are kept away from in electronic jar (17), and electronic jar (17) are close to one end fixedly connected with fan-shaped piece (18) at casing (1) center, four inside and outside logical groove (23) of lining up are evenly seted up to the outside of casing (1), fan-shaped piece (18) are close to the one end at casing (1) center and run through logical inside that groove (23) extended to casing (1), the lateral wall and casing (1) sliding connection of fan-shaped piece (18).

3. The oilfield wellhead blowout preventer capable of plugging and testing pressure according to claim 2, wherein the blowout preventer comprises: a sealing sleeve (19) is arranged outside the sector block (18), and the inner side wall of the sealing sleeve (19) is fixedly connected with the outer side wall of the sector block (18).

4. The oilfield wellhead blowout preventer capable of plugging and testing pressure according to claim 3, wherein the oilfield wellhead blowout preventer comprises: the top end of the bearing plate (9) is fixedly connected with a bearing block (20).

5. The oilfield wellhead blowout preventer capable of plugging and testing pressure according to claim 4, wherein the oilfield wellhead blowout preventer comprises: the left end and the right end downside of extrusion post (10) all are provided with support column (21), and support column (21) are kept away from the one end at bearing plate (9) center and the inside wall fixed connection of casing (1).

6. The oilfield wellhead blowout preventer capable of plugging and testing pressure according to claim 5, wherein the oilfield wellhead blowout preventer comprises: the bottom end of the shell (1) is fixedly connected with a flange (22).