CN2085877U - Stuffing sealing device of internal pressure-regulating self-removing type - Google Patents
Stuffing sealing device of internal pressure-regulating self-removing type Download PDFInfo
- Publication number
- CN2085877U CN2085877U CN 91215224 CN91215224U CN2085877U CN 2085877 U CN2085877 U CN 2085877U CN 91215224 CN91215224 CN 91215224 CN 91215224 U CN91215224 U CN 91215224U CN 2085877 U CN2085877 U CN 2085877U
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- CN
- China
- Prior art keywords
- packing
- seal sleeve
- screw thread
- pressure
- volume
- Prior art date
- 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 - Lifetime
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Abstract
The utility model relates to a sealing device of internal pressure-regulating self-removing type used in the polished rod of the wellhead of a reciprocating or a rotating oil pump of the oil field and the chemical processing equipment. The top and the bottom of the packing in a sealing sleeve tube can be pressed by a rotating press cap and a rotating sealing sleeve tube. Owing to the uniform pressure, the utility model has good sealing effect; when the user replaces the packing, the user only needs to rotate the sealing sleeve tube, and thus, the packing can be automatically ejected. Therefore, the packing replacement and the pressure regulating operation can be completed in short time on site of the oil field. The pressure can be regulated in the operating process of machines. The device has uniform pressure regulation, good sealing effect and convenient maintenance. The utility model is assuredly an ideal packing sealing device.
Description
The utility model belongs to oil field and the reciprocating type or rotary oil pumping well mouth polish rod of chemical industry equipment seal arrangement.
The present both at home and abroad oil well pump polish rod seal device that uses, the pressure of its packing is regulated rotation pressure cap compression packing and is regulated, and promptly adjusts pressure from outside atmospheric area pressurization.The shortcoming of this device is the sealed packing that compresses, unbalance stress, and sealing effect is poor, and working life is short.If packing damages, seal sleeve can't be dismantled, and the packing in seal sleeve just can't take out, thereby maintain and replace is very difficult, even may not change.
The purpose of this utility model be to design a kind of in the oil field on-the-spot that can dismantle, keep in repair pressure regulation easily, the packing_seal device of good sealing effect.
Design proposal of the present utility model is achieved in that and mainly contains pressure cap, writing that surpasses all the others, packing, seal sleeve, end volume, wedge, screw thread gland, wellhead housings, sealing volume and every compositions such as volumes.By rotation pressure cap and rotary seal sleeve, packing is simultaneously stressed about making, and makes the packing pressure regulation even, improves sealing effect; Unscrew and remove pressure cap and unscrew wedge, the rotary seal sleeve makes the screw thread gland upwards be promoted to the packing removal, promptly replaceable packing.
The utility model has the advantages that:
1, compress packing up and down simultaneously, pressure regulation is even, good sealing effect.Pressure regulation also can be carried out in machine operation procedure, does not need left alone without help machine.
2, change sealed packing, only need the rotary seal sleeve, packing can eject automatically, therefore, uses easy to maintenance.
Accompanying drawing is embodiment's schematic representation.
A kind of structure diagram of oil pump, polished rod 9 is slidingly mounted in the screw thread gland 8, screw thread gland 8 is threaded with seal sleeve 4, in seal sleeve 4 outside the polished rod 9, place packing 3, in packing 3, put one at interval every volume 12, packing is placed writing that surpasses all the others 2 and end volume 5 in two ends about in the of 3, at seal sleeve 4 outer walls middle parts corresponding to every volume 12 places, if a butter is chewed (not drawing among the figure), outer wall also is provided with rotating hole, seal sleeve 4 tops are threaded with pressure cap 1, screw thread gland 8 is slidingly mounted in the wellhead housings 10, and screw thread gland 8 has a straight trough and wellhead housings 10 a corresponding steel ball 7(or the straight pins of establishing), make screw thread gland 8, can only move up and down, can not rotate, seal sleeve 4 is located in wellhead housings 10 top groove, establishes sealing " O " type volume 11 between two conjunction planes, and wedge 6 is fixed tightly in wellhead housings 10 tops with seal sleeve 4 usefulness screws.
Pressure is adjusted: unclamp wedge 6 earlier, rotary seal sleeve 4 makes screw thread gland 8 upwards promote compression seal packing 3, rotate pressure cap 1 simultaneously, packing 3 compresses simultaneously about making, and makes stressed even, pressure screws the clamp-screw on the wedge 6 after adjusting again, finishes pressure regulation.
Change packing: unscrew and remove pressure cap 1 and unscrew wedge 6, rotary seal sleeve 4 rises to screw thread gland 8 packing 3 is all ejected automatically, changes packing 3 then.All processes is finished pressure regulation in the on-the-spot short time and is changed packing in the oil field, and what particularly point out is that pressure regulation work can be regulated in machine operation procedure.
Claims (1)
- A kind ofly be used for reciprocating type or rotary oil well pump internal pressure-regulating self-tipping type packing_seal device, comprise pressure cap (1), seal sleeve (4), packing (3), polished rod (9), wellhead housings (10), it is characterized in that: polished rod (9) is slidingly mounted in the screw thread gland (8), screw thread gland (8) is threaded with seal sleeve (4), in seal sleeve (4), outside the polished rod (9), place packing (3), in packing (3), put one at interval every volume (12), packing (3) two ends is up and down placed writing that surpasses all the others (2) and end volume (5), chew corresponding to locating to establish a butter at seal sleeve (4) outer wall middle part every volume (12), outer wall also is provided with rotating hole, seal sleeve (4) top is threaded with pressure cap (1), screw thread gland (8) is slidingly mounted in the wellhead housings (10), screw thread gland (8) has a corresponding steel ball (7) or the straight pin established with wellhead housings (10) of a straight trough, seal sleeve (4) is located in wellhead housings (10) top groove, establish sealing " O " type volume (11) between two conjunction planes, wedge (6) is fixed tightly in wellhead housings (10) top with seal sleeve (4) with screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91215224 CN2085877U (en) | 1991-03-14 | 1991-03-14 | Stuffing sealing device of internal pressure-regulating self-removing type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91215224 CN2085877U (en) | 1991-03-14 | 1991-03-14 | Stuffing sealing device of internal pressure-regulating self-removing type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2085877U true CN2085877U (en) | 1991-10-02 |
Family
ID=4923334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91215224 Expired - Lifetime CN2085877U (en) | 1991-03-14 | 1991-03-14 | Stuffing sealing device of internal pressure-regulating self-removing type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2085877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019851A (en) * | 2015-08-10 | 2015-11-04 | 刘翠萍 | Colloidal particle compensation oil-pumping polished rod sealer |
-
1991
- 1991-03-14 CN CN 91215224 patent/CN2085877U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019851A (en) * | 2015-08-10 | 2015-11-04 | 刘翠萍 | Colloidal particle compensation oil-pumping polished rod sealer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |