CN213330998U - Well head protector - Google Patents
Well head protector Download PDFInfo
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- CN213330998U CN213330998U CN202022286918.0U CN202022286918U CN213330998U CN 213330998 U CN213330998 U CN 213330998U CN 202022286918 U CN202022286918 U CN 202022286918U CN 213330998 U CN213330998 U CN 213330998U
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- packing
- box body
- main part
- packing box
- cap
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Abstract
The utility model relates to a well head protector belongs to oil field well head polished rod sealing device. Lock cap and the inside threaded connection of main part, the ball is located the main part, and is located the top of lock cap, and the abrasionproof cover is placed in the inside top of main part, and two semicircular packing covers are located the tang inslot on main part upper portion, inside 4 ~ 6 packings of stacking, packing box body lower extreme and main part upper portion threaded connection, and the inside top of packing box body compresses tightly the packing cover, and the packing is pressed cap and packing box body threaded connection, and bottom and packing top crimping. The packing box has the advantages that the structure is novel, the packing can be exposed when being replaced by adopting the structures of the packing box body, the packing sleeve and the packing pressing cap, the problems of labor waste and unsafety when the packing is replaced in the packing box body are avoided, and the problem that the packing is difficult to replace in the conventional polished rod sealing device is solved; meanwhile, the device can play a role in blowout prevention after a polish rod is broken.
Description
Technical Field
The utility model belongs to oil field well head polished rod sealing device especially indicates a well head protector.
Background
At present, a plurality of packing sealing polished rods are adopted by an oil field wellhead polished rod sealing device and a wellhead protection device, and when oil is pumped, the polished rods reciprocate up and down, and packing is easy to wear and needs to be replaced frequently. Because a plurality of packing sets are adopted for sealing, generally 5 packing sets or 6 packing sets are adopted, and the packing sets are arranged in a packing set box, operators usually dig outwards by using a screwdriver or a small-diameter steel stick when needing to be replaced, so that the operation is very difficult, and the operation is very dangerous, and the accident of breaking fingers often happens; particularly in cold winter, operators are labored to operate, and handles are easy to be frostbitten.
Disclosure of Invention
The utility model provides a well head protector to solve the difficult problem of change packing that current oil field well head polished rod sealing device exists.
The utility model adopts the technical proposal that: lock cap and the inside threaded connection of main part, the ball is located the main part, and is located the top of lock cap, and the abrasionproof cover is placed in the inside top of main part, and two semicircular packing covers are located the tang inslot on main part upper portion, inside 4 ~ 6 packings of stacking, packing box body lower extreme and main part upper portion threaded connection, and the inside top of packing box body compresses tightly the packing cover, and the packing is pressed cap and packing box body threaded connection, and bottom and packing top crimping.
The packing presses the screw hole of cap side.
The side of the upper part of the packing box body is fixedly connected with the welding sleeve.
The utility model has the advantages that the structure is novel, the packing can be exposed when being replaced by adopting the structure of the packing box body, the packing sleeve and the packing press cap, the problems of labor waste and unsafety when the packing is replaced in the packing box body are avoided, and the problem of difficult packing replacement of the existing polished rod sealing device is solved; meanwhile, the device can play a role in blowout prevention after a polish rod is broken.
Drawings
Fig. 1 is a schematic structural diagram of the present invention:
fig. 2 is a special tool used with the utility model.
Detailed Description
Lock cap 9 and 8 internal thread of main part are connected, ball 7 is arranged in main part 8, and is located the top of lock cap 9, wear-resisting cover 6 is placed in the inside top of main part, two semicircular packing covers 5 are located the tang inslot on 8 upper portions of main part, 4 ~ 6 packing 4 are stacked to its inside, 3 lower extremes of packing box body and 8 upper portion threaded connection of main part, 3 inside tops of packing box body compress tightly packing cover 5, 1 and 3 threaded connection of packing box body are pressed to the packing, and the crimping of bottom and 4 tops of packing.
The side surface of the packing pressing cap 1 is provided with a threaded hole 101.
The side of the upper part of the packing box body 3 is fixedly connected with the welding sleeve 2.
The working principle is as follows:
installing the utility model, screwing the lock cap 9 into the main body 8, then loading the ball 7 from the upper part of the main body 8, loading the anti-wear sleeve 6, then stacking the packing 4 in the rabbet groove at the upper part of the main body 8, after sleeving the two semicircular packing sleeves 5, screwing the packing box body 3 on the main body 8, and finally loading the packing press cap 1; the utility model is arranged outside a polished rod of a wellhead, when a packing is damaged, a threaded end 1001 of a special tool 10 is screwed into a threaded hole 101 on the side surface of a packing pressing cap 1, the packing pressing cap 1 is loosened, a smooth end 1002 of the special tool is inserted into a hole of a welding sleeve 2, and a packing box body 3 is screwed off, so that a packing sleeve 5 and a packing 4 are exposed, then the threaded ends 1001 of two special tools 10 are respectively screwed into the threaded hole 101 of the packing pressing cap 1, and the two ends are fastened, so that the packing box body 3 is fixed on the polished rod; then two semicircular packing sleeves 5 are taken down, damaged packing 4 is exposed, a new packing is replaced after the damaged packing sleeves 5 are taken down, the packing sleeves 5 are sleeved, two special tools 10 which are arranged on the packing pressing cap 1 and are used for supporting a polish rod are loosened, the packing box body 3 is screwed on the main body 8 by using the smooth end 1002 of the special tool, then the packing pressing cap 1 is screwed, and the packing is replaced; in addition, the ball 7 is arranged in the inner cavity of the main body 8, if the polish rod is broken by pulling, the ball 7 rolls to the lower end of the anti-abrasion sleeve 6 under the action of underground oil thrust, and the central hole of the anti-abrasion sleeve 6 is sealed under the action of underground oil pressure, so that the anti-blowout effect is achieved.
Claims (3)
1. A wellhead protector, characterized in that: lock cap and the inside threaded connection of main part, the ball is located the main part, and is located the top of lock cap, and the abrasionproof cover is placed in the inside top of main part, and two semicircular packing covers are located the tang inslot on main part upper portion, inside 4 ~ 6 packings of stacking, packing box body lower extreme and main part upper portion threaded connection, and the inside top of packing box body compresses tightly the packing cover, and the packing is pressed cap and packing box body threaded connection, and bottom and packing top crimping.
2. A wellhead protector as claimed in claim 1, in which: the packing presses the screw hole of cap side.
3. A wellhead protector as claimed in claim 1, in which: the side of the upper part of the packing box body is fixedly connected with the welding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022286918.0U CN213330998U (en) | 2020-10-14 | 2020-10-14 | Well head protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022286918.0U CN213330998U (en) | 2020-10-14 | 2020-10-14 | Well head protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213330998U true CN213330998U (en) | 2021-06-01 |
Family
ID=76072183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022286918.0U Active CN213330998U (en) | 2020-10-14 | 2020-10-14 | Well head protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213330998U (en) |
-
2020
- 2020-10-14 CN CN202022286918.0U patent/CN213330998U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |