CN211500572U

CN211500572U - Anticorrosive wear-resisting blowout prevention box packing

Info

Publication number: CN211500572U
Application number: CN201922349236.7U
Authority: CN
Inventors: 刘美萍; 胡忠太; 李龙鹏; 张伊鲜; 白萍; 张晋武; 吴峰; 谢超; 刘洪俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-15
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a box packing is prevented spouting in anticorrosive wear-resisting, including the polished rod, the inner wall of a packing box and No. two packing boxes all is equipped with the packing body, the inside of packing body is worn to locate in the outside of polished rod, the top fixed mounting of gland inner wall has a gland No. one, the top fixedly connected with retainer plate of gland No. two. Be equipped with the outer lane, inner circle and oil storage chamber, the inner circle is made by polytetrafluoroethylene material, it is anticorrosive wear-resisting, lubricating oil through in the oil storage chamber can lubricate the polished rod and anticorrosive, the wearing and tearing to the packing body have been reduced, the life of packing has been improved, be equipped with a packing box, press the cap No. one, No. two packing boxes and No. two pressure caps, can strengthen the sealed effect to the polished rod through two packing bodies, be convenient for press the installation of cap and a packing box and pull down, be convenient for press the installation of cap and No. two packing boxes and pull down No. two, and then be convenient for to the change of packing body, bring better use prospect.

Description

Anticorrosive wear-resisting blowout prevention box packing

Technical Field

The utility model relates to a prevent spouting box technical field, in particular to anticorrosive wear-resisting prevent spouting box packing.

Background

The blowout preventer is a sealing device of a polish rod of an oil pumping unit, and a packing for penetrating the polish rod is filled in the blowout preventer. In the production process of the pumping unit, the polished rod is connected with the pumping rod inside the wellhead and the pumping unit outside the wellhead through the wellhead, production pressure difference exists between the inside of the wellhead and the external environment, the annular space between the wellhead and the polished rod is sealed by using the blowout prevention box and the packing, and oil leakage is prevented.

When the packing of the existing blowout prevention box is used, the packing is influenced by the internal environment of an oil extraction inlet, the packing is easily corroded, the abrasion between the packing and a polished rod is serious, and the oil leakage and the environment pollution of a wellhead are easily caused.

In addition, the sealing effect of the polish rod through a single packing is not ideal enough, and the packing is inconvenient to replace.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a box packing is prevented spouting in anticorrosive wear-resisting, can effectively solve the current box packing that prevents spouting that proposes in the background art easily corroded, and the wearing and tearing between packing and the polished rod are serious, cause the well head to run oil and polluted environment easily, through the sealed effect ideal inadequately of single packing to the polished rod, and inconvenient problem of changing the packing.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the packing of the anti-corrosion wear-resistant blowout prevention box comprises a polished rod, wherein a first packing box is arranged on the outer side of the polished rod, a second packing box is arranged on the outer side of the polished rod, the second packing box is positioned below the first packing box, packing bodies are arranged on the inner walls of the first packing box and the second packing box, the outer side of the polished rod penetrates through the inner part of the packing body, a first pressing cap is arranged on the outer side of the polished rod, the inner side of the first pressing cap is in threaded connection with the top end of the first packing box, a first pressing cover is fixedly installed at the top of the inner wall of the first pressing cap, the outer side of the polished rod penetrates through the inner part of the first pressing cover, a second pressing cap is arranged on the outer side of the polished rod, the inner side of the second pressing cap is in threaded connection with the top end of the second packing box, a second pressing cover is fixedly installed at the top of the inner wall of the second pressing cap, the, the top fixedly connected with retainer plate of No. two pressure caps, the inboard bottom threaded connection in the packing box outside and No. one of retainer plate, the bottom fixedly connected with oil well rubber valve of No. two packing boxes, the inside of oil well rubber valve is worn to locate in the outside of polished rod.

Preferably, the packing body includes outer lane and inner circle, the outside of inner circle is equipped with the annular groove, the inboard of outer lane is equipped with annular arch, the protruding both ends joint in the inboard of annular groove of annular.

Preferably, the outer ring is made of a nitrile rubber material, and the inner ring is made of a polytetrafluoroethylene material.

Preferably, the bottom of the first pressing cover is in contact with the top of the packing body, and the bottom of the second pressing cover is in contact with the top of the packing body.

Preferably, enclose into the oil storage chamber between packing box, retainer plate and the second packing box, the oil filler neck is installed in the outside of oil storage chamber.

Compared with the prior art, the utility model discloses following beneficial effect has: the packing of the anti-corrosion, wear-resistant and anti-blowout box is characterized in that the outer ring, the inner ring and the oil storage chamber are arranged, the annular bulge of the outer ring is clamped on the inner side of the annular groove of the inner ring, the inner ring is made of a polytetrafluoroethylene material which has excellent high temperature resistance, corrosion resistance and wear resistance, oil leakage caused by corrosion and abrasion of the packing is effectively prevented, the oil filling nozzle is arranged on the outer side of the oil storage chamber, lubricating oil in the oil storage chamber can lubricate and prevent the polished rod from being corroded by adding lubricating oil into the oil storage chamber, the abrasion of the packing body is reduced, the service life of the packing is prolonged, well head oil leakage and environment pollution are avoided, the inner walls of the first packing box and the second packing box are provided with the packing bodies, the outer sides of the polished rod penetrate through the inside of the packing body, the sealing effect on the polished rod can be enhanced through the two packing bodies, the sealing effect to the polished rod is good, and the inboard of pressing the cap and the top threaded connection of packing box No. one is convenient for press the cap and the installation of packing box No. one with pull down, and the inboard of pressing the cap and the top threaded connection of packing box No. two are convenient for press the cap and the installation of packing box No. two with pull down No. two, and then be convenient for to the installation of packing body with pull down, be convenient for to the change of packing body.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the packing body of the present invention.

In the figure: 1. a polish rod; 2. a first packing box; 3. a second packing box; 4. a packing body; 5. an outer ring; 6. an inner ring; 7. an annular groove; 8. an annular projection; 9. pressing a cap; 10. a first gland; 11. pressing a cap II; 12. a second gland; 13. a stationary ring; 14. an oil storage chamber; 15. a fuel filler nozzle; 16. rubber valve for oil well.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in the figure 1-2, the packing of the anti-corrosion, wear-resistant and blowout-preventing box comprises a polished rod 1, a first packing box 2 is arranged on the outer side of the polished rod 1, a second packing box 3 is arranged on the outer side of the polished rod 1, the second packing box 3 is positioned below the first packing box 2, packing bodies 4 are arranged on the inner walls of the first packing box 2 and the second packing box 3, the outer side of the polished rod 1 penetrates through the inner portion of the packing bodies 4, a first pressing cap 9 is arranged on the outer side of the polished rod 1, the inner side of the first pressing cap 9 is in threaded connection with the top end of the first packing box 2, the first pressing cap 9 and the first packing box 2 are convenient to install and detach, a first pressing cover 10 is fixedly installed on the top of the inner wall of the first pressing cap 9, the outer side of the polished rod 1 penetrates through the inner portion of the first pressing cap 10, a second pressing cap 11 is arranged on the outer side of the polished rod 1, the inner side of the second pressing cap 11 is in threaded connection with the top end of the second packing box 3, and, no. two gland 12 of top fixed mounting of pressing cap 11 inner wall, the inside of No. two gland 12 is worn to locate in the outside of polished rod 1, the top fixedly connected with retainer plate 13 of No. two pressing caps 11, the inboard bottom threaded connection in the 2 outsides of packing box and retainer plate 13, the bottom fixedly connected with oil well rubber valve 16 of No. two packing box 3, the inside of oil well rubber valve 16 is worn to locate in the outside of polished rod 1.

The packing body 4 comprises an outer ring 5 and an inner ring 6, an annular groove 7 is arranged on the outer side of the inner ring 6, an annular bulge 8 is arranged on the inner side of the outer ring 5, and two ends of the annular bulge 8 are clamped on the inner side of the annular groove 7; the outer ring 5 is made of a nitrile rubber material, the inner ring 6 is made of a polytetrafluoroethylene material, and the polytetrafluoroethylene material has excellent high temperature resistance, corrosion resistance and wear resistance, so that the oil leakage phenomenon caused by the corrosive wear of a packing is effectively prevented; the bottom of the first gland 10 is in contact with the top of the packing body 4, the bottom of the second gland 12 is in contact with the top of the packing body 4, and the first gland 10 and the second gland 12 play a role in compressing the packing body 4; enclose into oil storage chamber 14 between packing box 2, retainer plate 13 and No. two packing boxes 3, oil filler 15 is installed in the outside of oil storage chamber 14, can utilize the lubricating oil in the oil storage chamber 14 to lubricate polish rod 1 and anticorrosive, has reduced the wearing and tearing to packing body 4, has improved the life of packing.

It should be noted that, the utility model relates to an anticorrosive wear-resisting blowout prevention box packing, when using, the bottom of the oil well rubber valve 16 is connected with the oil extraction well mouth through three-way thread sealing, at first, add lubricating oil to the oil storage chamber 14 through the oil filler sleeve 15, the lubricating oil in the oil storage chamber 14 can lubricate and prevent corrosion to the polished rod 1, reduce the abrasion to the packing body 4, improve the service life of the packing, because the annular bulge 8 of the outer ring 5 is clamped at the inner side of the annular groove 7 of the inner ring 6, the inner ring 6 is made of polytetrafluoroethylene material, the polytetrafluoroethylene material has excellent high temperature resistance, corrosion resistance and abrasion resistance, effectively prevent the oil leakage phenomenon caused by the packing corrosion abrasion, avoid causing well mouth oil leakage and polluting the environment, during normal production, the oil well rubber valve 16 is in the open state, because the inner walls of the first packing box 2 and the second packing box 3 are all provided with the packing body 4, the inside of packing body 4 is worn to locate in the outside of polished rod 1, can strengthen the sealed effect to polished rod 1 through two packing bodies 4, it is effectual to the sealed of polished rod 1, when packing body 4 is changed to needs, close oil well rubber valve 16, oil well rubber valve 16 seals polished rod 1, because the inboard of a pressure cap 9 and the top threaded connection of a packing box 2, be convenient for to the installation and the pull down of a pressure cap 9 and a packing box 2, the inboard of No. two pressure caps 11 and the top threaded connection of No. two packing boxes 3, be convenient for to the installation and the pull down of No. two pressure caps 11 and No. two packing boxes 3, and then be convenient for to the installation and the pull down of packing body 4, be convenient for to the change of packing body 4, be favorable to people's use, and is practical.

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 an anticorrosive wear-resisting blowout prevention box packing, includes polished rod (1), its characterized in that: the packing box (2) is arranged on the outer side of the polished rod (1), the packing box (3) is positioned below the packing box (2), the inner walls of the packing box (2) and the packing box (3) are respectively provided with a packing body (4), the outer side of the polished rod (1) is penetrated in the packing body (4), the outer side of the polished rod (1) is provided with a pressing cap (9), the inner side of the pressing cap (9) is in threaded connection with the top end of the packing box (2), a pressing cover (10) is fixedly arranged at the top of the inner wall of the pressing cap (9), the outer side of the polished rod (1) is penetrated in the pressing cap (10), the outer side of the polished rod (1) is provided with a pressing cap (11), the inner side of the pressing cap (11) is in threaded connection with the top end of the packing box (3), no. two top fixed mounting who presses cap (11) inner wall has gland (12) No. two, the inside of gland (12) No. two is worn to locate in the outside of polished rod (1), top fixedly connected with retainer plate (13) of cap (11) are pressed No. two, the inboard bottom threaded connection in packing box (2) outside and the packing box of retainer plate (13), the bottom fixedly connected with oil well rubber valve (16) of packing box (3) No. two, the inside of oil well rubber valve (16) is worn to locate in the outside of polished rod (1).

2. The packing of claim 1, wherein the packing is characterized in that: packing body (4) include outer lane (5) and inner circle (6), the outside of inner circle (6) is equipped with annular groove (7), the inboard of outer lane (5) is equipped with annular arch (8), the both ends joint in the inboard of annular groove (7) of annular arch (8).

3. The packing of claim 2, wherein the packing is characterized in that: the outer ring (5) is made of a nitrile rubber material, and the inner ring (6) is made of a polytetrafluoroethylene material.

4. The packing of claim 1, wherein the packing is characterized in that: the bottom of a first pressing cover (10) is in contact with the top of the packing body (4), and the bottom of a second pressing cover (12) is in contact with the top of the packing body (4).

5. The packing of claim 1, wherein the packing is characterized in that: enclose into oil storage chamber (14) between packing box (2), retainer plate (13) and No. two packing boxes (3), oil filler sleeve (15) are installed in the outside of oil storage chamber (14).