CN207348817U - A kind of automatic compensation type polished rod seal box - Google Patents
A kind of automatic compensation type polished rod seal box Download PDFInfo
- Publication number
- CN207348817U CN207348817U CN201721392999.4U CN201721392999U CN207348817U CN 207348817 U CN207348817 U CN 207348817U CN 201721392999 U CN201721392999 U CN 201721392999U CN 207348817 U CN207348817 U CN 207348817U
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- CN
- China
- Prior art keywords
- ring
- sealing ring
- compensation
- polished rod
- end cap
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Abstract
The utility model provides a kind of automatic compensation type polished rod seal box, including sleeve, and sleeve includes cylinder body and boss；Sealing ring, sealing ring are arranged in cylinder body, and sealing ring forms taper annular groove from its both ends of the surface；Two compensation rings, two compensation rings are respectively arranged on the both ends of sealing ring and are connected with taper annular groove；Clamping sleeve, clamping sleeve include sleeved part and outer press ring；And end cap, end cap are sheathed on the top of a body, the inner surface of end cap is abutted with outer press ring, and end cap is moved downward is plugged in sealing ring for driving clamping sleeve to compress compensation ring.The automatic compensation type polished rod seal box that the utility model embodiment provides opens up taper annular groove by the end face in sealing ring, coordinated again by compensating ring with taper annular groove, by adjust end cap move downward for drive clamping sleeve with compress compensation ring be plugged in sealing ring, so that the sealing ring after abrasion is extruded to both sides, so that sealing ring is fitted close with polished rod all the time, reach sealing effect.
Description
Technical field
The utility model belongs to oil pumping unit seal technical field, more particularly to a kind of automatic compensation type polished rod seal box.
Background technology
Pumping unit is a kind of mechanical equipment for exploiting oil, crude oil is gone out well by the method for pressurization.The oil pumping of pumping unit
Polished rod is connect on bar, under connect oil well pump, the crude oil of underground is pumped into out well, usually when oil pumping, production process in order to prevent
It is middle the leakage of crude oil occur, need to set seal box in the bottom of the polished rod of lifting.
In the prior art, polished rod can produce deflection during pumping with polished rod sealer, make polished rod seal
The inner wall that the sealing ring of box is contacted with polished rod produces abrasion, in this way, the fit clearance of sealing ring and polished rod increases, makes sealing ring
Sealing effect is deteriorated, so that the sealing effect of polished rod seal box is deteriorated, further results in and crude oil leakage occurs, wastes former material
Material.
Therefore, it is necessary to a kind of new automatic compensation type polished rod seal box is provided to solve the above problems.
Utility model content
The utility model provides a kind of automatic compensation type polished rod seal box, it is intended to solves the sealing ring of current polished rod seal box
The problem of sealing effect is poor.
The utility model is realized in this way a kind of automatic compensation type polished rod seal box, including：
Sleeve, the sleeve include the cylinder body with receiving space and from the cylinder body internal surfaces to the cylinder body
The boss that forms of center extension；
Sealing ring, the sealing ring be arranged on the cylinder body in, the sealing ring from its both ends of the surface in opposite direction to
Sunken inside forms taper annular groove；
Two compensation rings, two compensation rings are respectively arranged on the both ends of the sealing ring and coordinate with the taper annular groove
Connection, the cross-sectional area of two compensation rings is all higher than the cross-sectional area of the taper annular groove, wherein a compensation
Ring is abutted with the boss；
Clamping sleeve, the clamping sleeve is included arranged on the intrinsic sleeved part of the cylinder and bending is prolonged from described sleeved part one end
The outer press ring stretched, the one end of the sleeved part away from the outer press ring are abutted with another compensation ring, the outer press ring and institute
The end for stating sleeve is arranged at intervals；And
End cap, the end cap are sheathed on the top of the cylinder body, and the inner surface of the end cap is abutted with the outer press ring,
The end cap is connected with one end of the cylinder body, and the end cap is moved downward for driving the clamping sleeve to compress the benefit
Repay ring and be plugged in the sealing ring.
Further, the shape of cross section of the compensation ring is up big and down small taper, that is, is matched with the sealing ring one
The area at end is less than the other end.
Further, the minimum widith of the compensation ring is less than the maximum width of the taper annular groove.
Further, the height of the compensation ring is more than the height of the taper annular groove.
Further, the spacing distance between the outer press ring and the sleeve is more than or equal to the height of the compensation ring
Degree.
Further, the compensation ring compensates ring for nitrile rubber.
Further, the sealing ring is nitrile rubber sealing ring.
Further, the end cap is connected through a screw thread with the sleeve.
Further, the end cap includes stop part and from the stop part vertically extending connecting portion outward, the resistance
Stopper is located at the top of the outer press ring, the connecting portion and the sleeve connection.
Further, the end cap is steel alloy end cap.
The automatic compensation type polished rod seal box that the utility model embodiment provides opens up taper by the end face in sealing ring
Annular groove, then coordinated by compensating ring with taper annular groove, moved downward by adjusting end cap for driving the clamping sleeve to compress
Compensation ring is plugged in the sealing ring so that and the sealing ring after abrasion is extruded to both sides, to compensate wear extent, so that
Sealing ring is fitted close with polished rod all the time, reaches sealing effect, without sealing ring is needed to change, as long as by adjusting the end cap with regard to energy
Again realize the effect of sealing, reduce the phenomenon of crude oil leakage, meanwhile, reduce maintenance time, improve production efficiency.
Brief description of the drawings
Fig. 1 is the cross-sectional view for the automatic compensation type polished rod seal box that the utility model embodiment provides；
Fig. 2 is the decomposition texture schematic diagram of the sealing ring and compensation ring shown in Fig. 1.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining
The utility model, is not used to limit the utility model.
Referring to Fig. 1, the cross-sectional view for automatic compensation type polished rod seal box provided by the utility model.As
The preferred embodiment of the utility model, the automatic compensation type polished rod seal box 100 include sleeve 1, close in the sleeve 1
3, two compensation rings 4 of seal and clamping sleeve 5 and the end cap 7 being connected on the clamping sleeve 5 and with the sleeve 1.
The sleeve 1 has the hollow structure of opening for both ends, and the sleeve 1 includes cylinder body 11 and is formed at the cylinder sheet
Boss 13 inside body 11, the boss 13 in a ring, from the inside of the cylinder body 11 to the center line of the cylinder body 11
Direction extension forms, and the junction of the cylinder body 11 and the boss 13 is in step-like setting.
The sealing ring 3 is arranged in the cylinder body 11, and the inner ring of the sealing ring 3 coordinates with polished rod, outer ring with it is described
The inner surface of cylinder body 11 abuts.The sealing ring 3 is recessed inwardly to form taper annular groove 31 in opposite direction from its both ends of the surface.
The taper annular groove 31 is two, is opened in the both ends of the surface of the sealing ring 3 respectively, specifically, the sealing ring 3 is annular fourth
Nitrile rubber sealing ring 3.
Referring to Fig. 2, the decomposition texture schematic diagram for the sealing ring shown in Fig. 1 and compensation ring.The compensation ring 4 is two
It is a, respectively symmetrically the taper annular groove is plugged at the same time arranged on the both ends of the sealing ring 3, one end of two compensation rings 4
In 31, one of them it is described compensation ring 4 other end abutted with the clamping sleeve 5, another it is described compensation ring 4 other end and
The boss 13 abuts.
The cross-sectional area of two compensation rings 4 is all higher than the cross-sectional area of the taper annular groove 31, and the benefit
The minimum widith for repaying ring 4 is less than the maximum width of the taper annular groove 31, in this way, passing through the clamping sleeve 5 and the boss 13
Extruding force, two compensation rings 4 while is moved to the sealing ring 3.Meanwhile the height of the compensation ring 4 is more than institute
The height of taper annular groove 31 is stated, so described can compensate ring 4 will not all be absorbed in the taper annular groove 31, cause to take out not side
Just, maintenance convenience can be improved.
In another embodiment, the compensation ring 4 can also be one, on the sealing ring 3, can also be located at described
The lower section of sealing ring 3, can equally realize the purpose of sealing.
The compensation ring 4 coordinates with the taper annular groove 31 and one end is plugged in the taper annular groove 31.Specifically, institute
The shape of cross section for stating compensation ring 4 is up big and down small taper, and the area close to described 3 one end of sealing ring is less than the other end.
Specifically, the compensation ring 4 compensates ring 4 for nitrile rubber.Nitrile rubber has anticorrosive, the elastic performance such as good.
The clamping sleeve 5 includes the sleeved part 51 being arranged in the cylinder body 11 and bending is prolonged from described 51 one end of sleeved part
The outer press ring 53 stretched, the one end of the sleeved part 51 away from the outer press ring 53 are abutted with a compensation ring 4, the outer press ring
53 are arranged on the end of the cylinder body 11 and both interval settings.Specifically, between the outer press ring 53 and the cylinder body 11
Spacing distance be more than or equal to it is described compensation ring 4 height, in this way, having enough rulers when the end cap 7 moves downward
Very little height can depress the compensation ring 4 and be moved towards 3 direction of sealing ring.
The end cap 7 is steel alloy end cap, and the end cap 7 is sheathed on the top of the cylinder body 11 and is located at the external pressure
The top of ring 53, the inner surface of the end cap 7 are abutted with the outer press ring 53, and the end cap 7 includes stop part 71 and described in
Vertically extending connecting portion 73, the inner surface of the stop part 71 abut stop part 71 with the upper end of the outer press ring 53 outward,
The connecting portion 73 is connected with the cylinder body 11, specifically, 73 inner surface of the connecting portion offers internal thread, the sleeve
1 11 outer surface of cylinder body offers external screw thread, and the end cap 7 is connected through a screw thread with the sleeve 1.
In the course of work, after the sealing ring 3 is subject to necessarily abrasion, adjusts the end cap 7 and move downward, so that
The end cap 7 drives the clamping sleeve 5 to move downward, and the clamping sleeve 5 and the boss compress two compensation rings 4 at the same time
The taper annular groove 31 of the sealing ring 3 is plugged in, so that offering the past of the sealing ring 3 of the taper annular groove 31
Both sides extrude, and to compensate the amount that the sealing ring 3 has been worn, the polished rod and the sealing ring 3 is realized closely again
Mating connection, reach the effect of sealing, in this way, without sealing ring 3 is needed to change, as long as just can be again by adjusting the end cap 7
Realize the effect of sealing, reduce the phenomenon of crude oil leakage, meanwhile, reduce maintenance time, improve production efficiency.
The automatic compensation type polished rod seal box that above-mentioned utility model embodiment provides in the end face of sealing ring by opening up cone
Shape annular groove, then coordinated by compensating ring with taper annular groove, moved downward by adjusting end cap for driving the clamping sleeve to press
Tight compensation ring is plugged in the sealing ring so that and the sealing ring after abrasion is extruded to both sides, to compensate wear extent, so that
Obtain sealing ring to be fitted close with polished rod all the time, reach sealing effect, without sealing ring is needed to change, as long as by adjusting the end cap just
The effect of sealing can be realized again, reduce the phenomenon of crude oil leakage, meanwhile, reduce maintenance time, improve production efficiency.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
- A kind of 1. automatic compensation type polished rod seal box, it is characterised in that including：Sleeve, the sleeve include the cylinder body with receiving space and from the cylinder body internal surface into the cylinder body The boss that heart extension forms；Sealing ring, the sealing ring are arranged in the cylinder body, and the sealing ring concaves in opposite direction from its both ends of the surface Fall into and form taper annular groove；Two compensation rings, two compensation rings are respectively arranged on the both ends of the sealing ring and coordinate with the taper annular groove part Connection, the cross-sectional area of two compensation rings is all higher than the cross-sectional area of the taper annular groove, wherein a compensation Ring is abutted with the boss；Clamping sleeve, the clamping sleeve include what is extended arranged on the intrinsic sleeved part of the cylinder and from the bending of described sleeved part one end Outer press ring, the one end of the sleeved part away from the outer press ring are abutted with another compensation ring, the outer press ring and the set The end of cylinder is arranged at intervals；AndEnd cap, the end cap are sheathed on the top of the cylinder body, and the inner surface of the end cap is abutted with the outer press ring, described End cap is connected with one end of the cylinder body, and the end cap is moved downward for driving the clamping sleeve to compress the compensation ring It is plugged in the sealing ring.
- 2. automatic compensation type polished rod seal box as claimed in claim 1, it is characterised in that the shape of cross section of the compensation ring For up big and down small taper, that is, the area for being matched with described sealing ring one end is less than the other end.
- 3. automatic compensation type polished rod seal box as claimed in claim 2, it is characterised in that the minimum widith of the compensation ring is small In the maximum width of the taper annular groove.
- 4. automatic compensation type polished rod seal box as claimed in claim 3, it is characterised in that the height of the compensation ring is more than institute State the height of taper annular groove.
- 5. automatic compensation type polished rod seal box as claimed in claim 4, it is characterised in that the outer press ring and the sleeve it Between spacing distance be more than or equal to it is described compensation ring height.
- 6. the automatic compensation type polished rod seal box as described in any one in claim 1-5, it is characterised in that the compensation ring Ring is compensated for nitrile rubber.
- 7. automatic compensation type polished rod seal box as claimed in claim 1, it is characterised in that the sealing ring is close for nitrile rubber Seal.
- 8. automatic compensation type polished rod seal box as claimed in claim 1, it is characterised in that the end cap passes through with the sleeve It is threadedly coupled.
- 9. automatic compensation type polished rod seal box as claimed in claim 8, it is characterised in that the end cap is including stop part and certainly Vertically extending connecting portion, the stop part are located at the top of the outer press ring, the connecting portion and institute to the stop part outward State sleeve connection.
- 10. automatic compensation type polished rod seal box as claimed in claim 8 or 9, it is characterised in that the end cap is steel alloy end Lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721392999.4U CN207348817U (en) | 2017-10-26 | 2017-10-26 | A kind of automatic compensation type polished rod seal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721392999.4U CN207348817U (en) | 2017-10-26 | 2017-10-26 | A kind of automatic compensation type polished rod seal box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207348817U true CN207348817U (en) | 2018-05-11 |
Family
ID=62355998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721392999.4U Active CN207348817U (en) | 2017-10-26 | 2017-10-26 | A kind of automatic compensation type polished rod seal box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207348817U (en) |
-
2017
- 2017-10-26 CN CN201721392999.4U patent/CN207348817U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |