CN210685920U

CN210685920U - Pumping unit polished rod breaking blowout preventer

Info

Publication number: CN210685920U
Application number: CN201921608371.2U
Authority: CN
Inventors: 杨炎; 赵鑫; 黎瑞敏
Original assignee: Individual
Current assignee: China Petroleum and Chemical Corp; Sinopec Henan Oilfield Branch Co
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-06-05
Anticipated expiration: 2029-09-26

Abstract

The utility model relates to a blowout preventer is taken off absolutely to beam-pumping unit polished rod, including preventing spouting box body, seal box and polished rod, prevent spouting the box body top and have leak protection pole cover and leak protection pole cover inside to inlay through threaded connection and be equipped with sealed the pad, prevent spouting the welding of the box body top outside and be provided with sealed packing inside seal box and seal box, prevent spouting box body one end and have a plug wire cover and a plug wire cover below through threaded connection and have No. two plug wire covers through threaded connection, prevent spouting the inside hollow plugging ball that is provided with of cavity and a cavity of having seted up of box body, No. two cavities have been seted up to cavity bottom, No. two cavities inside is provided with plugging plate and plugging plate one side both ends and installs the auxiliary wheel through the bearing, leak protection box body top cover is equipped with polished rod and runs through prevents spouting. The utility model discloses a dual design of preventing spouting, it is better to prevent spouting the effect, is fit for being extensively promoted and used.

Description

Pumping unit polished rod breaking blowout preventer

Technical Field

The utility model relates to a beam-pumping unit blowout preventer technical field, concretely relates to beam-pumping unit polished rod takes off blowout preventer absolutely.

Background

Under the condition of normal work of a pumping well, a polish rod reciprocates along with a horse head of the pumping unit, a wellhead is sealed by the polish rod and a packing box in a matching way, once the polish rod is broken and takes off, the wellhead is sealed due to the fact that the polish rod is not matched with the packing box, the wellhead is in a non-control state, crude oil can return to the wellhead from a metering station, the crude oil is sprayed out from the packing box, the wellhead is out of control, if the crude oil cannot be found in time, oil gas is leaked in a large number and environment pollution is generated, the oil gas is leaked in the instant when the polish rod is broken and takes off, a device is needed to be used for sealing the wellhead in the instant when the polish rod is broken and takes off, the situation that oil liquid is leaked is easy to occur when the polish rod is broken and takes.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at overcomes at least a defect among the prior art, provides a blowout preventer is taken off absolutely to beam-pumping unit polished rod.

In order to realize the technical scheme, the utility model discloses a following technical scheme:

the utility model provides a blowout preventer is taken off absolutely to beam-pumping unit polished rod, is including preventing that leakage box body, seal box and polished rod are prevented spouting, prevent spouting the box body top and have through threaded connection leak protection pole cover and leak protection pole cover inside to inlay to be equipped with sealed pad, prevent spouting the welding of box body top outside and be provided with sealed packing inside seal box and seal box, prevent spouting box body one end and have a plug wire cover and a plug wire cover below through threaded connection No. two plug wire covers through threaded connection, prevent spouting the inside cavity of having seted up of box body and a cavity inside be provided with hollow plug ball, No. two cavities have been seted up to a cavity bottom, No. two cavities inside is provided with plug plate and plug plate one side both ends and installs the auxiliary wheel through the bearing, leak protection box body top cover is equipped with polished rod and polished rod.

Further, install No. two springs through the mounting groove between a stifled silk cover and the hollow shutoff ball, install No. three springs through the mounting groove between No. two stifled silk covers and the shutoff board.

Furthermore, the outer sides of the blowout prevention box body and the sealing box are both sprayed with anticorrosive coatings, and the anticorrosive coatings are made of high-chlorine inorganic anticorrosive paint.

Furthermore, install a spring and the quantity of a spring be a plurality ofly through the mounting groove between sealed packing and the seal box.

Furthermore, a plugging plate groove is formed in one side of the inner portion of the second cavity, and a lower sealing ring is fixed to the bottom of the blowout prevention box body through bolts.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. through setting up shutoff board and No. three spring, No. three spring promotion shutoff board removed after the polished rod breaks off, makes its one end move to the shutoff board inslot, blocks up No. two cavities, prevents that the oil well from revealing, and the auxiliary wheel of shutoff board one end makes the polished rod can not produce the friction with the shutoff board when reciprocating simultaneously.

2. Through setting up hollow shutoff ball and No. two springs, No. two springs promote when the polished rod breaks off and remove, and hollow shutoff ball moves to the sealed pad of leak protection pipe box inboard under the promotion of crude oil in, prevents that crude oil from leaking, and dual blowout prevention is prevented, prevents that the blowout prevention effect is better.

3. Through setting up stifled screw sleeve and No. two stifled screw sleeves, personnel can unscrew it, and convenient adjustment, change No. two springs and No. three springs can promote sealed packing through setting up a spring, make it firmly seal between polished rod and the seal box.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is the utility model discloses a pumping unit polished rod takes off blowout preventer absolutely overall structure sketch map.

Fig. 2 is the internal structure diagram of the sealing box of the pumping unit polish rod breaking blowout preventer.

Fig. 3 is the structure diagram of the external material of the blowout preventing box body and the sealing box of the pumping unit polished rod breaking blowout preventer.

In the figure: 1. a blowout prevention box body; 2. a sealing box; 3. a polish rod; 4. sealing the packing; 5. a first spring; 6. A leakage-proof rod sleeve; 7. a gasket; 8. a first plug wire sleeve; 9. a second plug bush; 10. a second spring; 11. A hollow plugging ball; 12. a third spring; 13. a plugging plate; 14. an auxiliary wheel; 15. a lower seal ring; 16. plugging the plate groove; 17. a first chamber; 18. a second chamber; 19. and (4) an anticorrosive layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-3, the pumping unit polish rod breaking and blowout preventing device comprises a blowout preventing box body 1, a sealing box 2 and a polish rod 3, the top of the blowout prevention box body 1 is connected with a leakage-proof rod sleeve 6 through threads, a sealing gasket 7 is embedded in the leakage-proof rod sleeve 6, a sealing box 2 is welded on the outer side of the top of the blowout prevention box body 1, a sealing packing 4 is arranged in the sealing box 2, one end of the blowout prevention box body 1 is connected with a first plugging screw sleeve 8 through threads, and the lower part of the first plugging screw sleeve 8 is connected with a second plugging screw sleeve 9 through threads, a first cavity 17 is arranged in the blowout prevention box body 1, a hollow plugging ball 11 is arranged in the first cavity 17, no. two cavities 18 have been seted up to cavity 17 bottom, No. two cavities 18 are inside to be provided with shutoff board 13 and shutoff board 13 one side both ends and to install auxiliary wheel 14 through the bearing, 1 top cover of blowout prevention box body is equipped with polished rod 3 and runs through blowout prevention box body 1.

Wherein, install No. two springs 10 through the mounting groove between a stifled silk cover 8 and the hollow shutoff ball 11, install No. three spring 12 through the mounting groove between No. two stifled silk covers 9 and the shutoff board 13.

In this embodiment, as shown in fig. 1, the second spring 10 may push the hollow plugging ball 11 to move, and the third spring 12 may push the plugging plate 13 to move.

Wherein, the outer sides of the blowout prevention box body 1 and the sealing box 2 are both sprayed with an anticorrosive coating 19, and the anticorrosive coating 19 is made of high-chlorine inorganic anticorrosive paint.

In this embodiment, as shown in fig. 3, the corrosion protection layer 19 makes the blowout preventer cartridge body 1 and the seal cartridge 2 less susceptible to corrosion by corrosive substances.

Wherein, install a spring 5 and a spring 5's quantity for a plurality ofly through the mounting groove between sealed packing 4 and the seal box 2.

In this embodiment, as shown in fig. 1, a plurality of springs 5 can push the packing 4 to be tightly attached to the outer side of the polish rod 3.

One side of the inside of the second cavity 18 is provided with a plugging plate groove 16, and the bottom of the blowout-preventing box body 1 is fixed with a lower sealing ring 15 through a bolt.

In this embodiment, as shown in fig. 1, the blocking plate groove 16 can accommodate the blocking plate 13 and the auxiliary wheel 14 at one end thereof, and the lower sealing ring 15 has a sealing function with the polish rod 3 at the bottom of the square injection box body 1.

It should be noted that the utility model relates to a pumping unit polished rod takes off blowout preventer absolutely, during operation, personnel use the lifting rope to fix polished rod 3 on the pumping unit, the pumping unit drives peg 3 to reciprocate in the well barrel during normal operation, sealing packing 4 in seal box 2 is under the promotion of a plurality of springs 5, paste the polished rod 3 outside tightly, form sealedly between import and polished rod 3, when polished rod 3 reciprocates, hollow shutoff ball 11 can roll because of self spherical structure, the installation of auxiliary wheel 14 of shutoff board 13 one end, can not influence polished rod 3 and move, after polished rod 3 takes off absolutely, No. three spring 12 promotes shutoff board 13 and moves, make shutoff board 13 one side move to the seal board groove 16, shutoff No. two cavities 18, reach the blowout prevention purpose, No. two spring 10 promotes hollow shutoff ball 11, if No. two cavities 18 leak, crude oil enters No. one cavity 17 and pushes hollow shutoff ball 11 upwards, the anti-blowout device is moved into a sealing gasket 7 on the inner side of the anti-blowout rod sleeve 6 to seal a first cavity 17, double blowout prevention is achieved, the anti-blowout effect is better, the anti-blowout box body 1 and the sealing box 2 are not prone to being corroded by corrosive substances due to an anti-corrosion layer 19, and a person unscrews a first plug wire sleeve 8 and a second plug wire sleeve 9 to conveniently adjust and replace a second spring 10 and a third spring 12 for overhauling and maintaining.

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

1. The utility model provides a beam-pumping unit polished rod takes off blowout preventer absolutely, includes blowout prevention box body (1), seal box (2) and polished rod (3), its characterized in that: the top of the blowout prevention box body (1) is connected with a leakage-proof rod sleeve (6) through threads, a sealing gasket (7) is embedded in the leakage-proof rod sleeve (6), a sealing box (2) is welded on the outer side of the top of the blowout prevention box body (1), a sealing packing (4) is arranged in the sealing box (2), one end of the blowout prevention box body (1) is connected with a first plugging sleeve (8) through threads, the lower part of the first plugging sleeve (8) is connected with a second plugging sleeve (9) through threads, a first cavity (17) is arranged in the blowout prevention box body (1), a hollow plugging ball (11) is arranged in the first cavity (17), a second chamber (18) is arranged at the bottom of the first chamber (17), a plugging plate (13) is arranged in the second chamber (18), two ends of one side of the plugging plate (13) are provided with auxiliary wheels (14) through bearings, the top of the blowout prevention box body (1) is sleeved with a polished rod (3), and the polished rod (3) penetrates through the blowout prevention box body (1).

2. The polished rod breaking and blowout preventing device of the oil pumping unit according to claim 1, characterized in that: no. two springs (10) are installed through the mounting groove between a stifled screw cover (8) and hollow shutoff ball (11), install No. three springs (12) through the mounting groove between No. two stifled screw covers (9) and shutoff board (13).

3. The polished rod breaking and blowout preventing device of the oil pumping unit according to claim 1, characterized in that: the outer sides of the blowout prevention box body (1) and the sealing box (2) are both sprayed with an anticorrosive coating (19), and the anticorrosive coating (19) is made of high-chlorine inorganic anticorrosive paint.

4. The polished rod breaking and blowout preventing device of the oil pumping unit according to claim 1, characterized in that: a spring (5) and the number of a spring (5) are installed between the sealing packing (4) and the sealing box (2) through the mounting groove and are a plurality of.

5. The polished rod breaking and blowout preventing device of the oil pumping unit according to claim 1, characterized in that: one side in the second cavity (18) is provided with a plugging plate groove (16), and the bottom of the blowout prevention box body (1) is fixed with a lower sealing ring (15) through a bolt.