CN203906255U - Central pull rod capable of being automatically adjusted for sealing - Google Patents
Central pull rod capable of being automatically adjusted for sealing Download PDFInfo
- Publication number
- CN203906255U CN203906255U CN201420373943.4U CN201420373943U CN203906255U CN 203906255 U CN203906255 U CN 203906255U CN 201420373943 U CN201420373943 U CN 201420373943U CN 203906255 U CN203906255 U CN 203906255U
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- CN
- China
- Prior art keywords
- pull rod
- seal ring
- center pull
- elastic seal
- sleeve pipe
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- 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 - Fee Related
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Abstract
The utility model discloses a central pull rod capable of being automatically adjusted for sealing. The central pull rod comprises a fixing cylinder, wherein a movable cavity is formed in the fixing cylinder; a bulge is formed in the middle of an elastic sealing ring; a roller wheel penetrates through a sleeve so as to be contacted with the bulge; the elastic sealing ring is compressed until the elastic sealing ring is contacted with the central pull rod; the central pull rod further comprises a pressure sensor; the pressure sensor is arranged at the bottom of the roller wheel, is contacted with the bulge and is connected with a driving device of the cylinder by virtue of a wire. The bulge is arranged in the middle of the elastic sealing ring, the sealing performance of the central pull rod can be always kept in an environment that the sealing ring is continuously worn, the sealing adjustment property of the central pull rod is realized, and the service life of the sealing ring is prolonged. Moreover, the central pull rod has a certain radial run-out in the motion process, the material of the bulge is the same as that of the elastic sealing ring, the stress can be eliminated through the action of the radial run-out, and the stable movement of the central pull rod is guaranteed.
Description
Technical field
The utility model relates to seal arrangement, specifically refers to the center pull rod that can automatically regulate sealing.
Background technique
Drilling pump is as the visual plant of drillng operation, in the time of work, to shaft bottom delivery cycle cleaner for high-pressure drilling fluid, at the bottom of flushing manhole, fractured rock, cooling and lubricating drill bit, and landwaste carried and returns to ground.In current drilling equipment, the drilling pump of use is mainly reciprocating piston pump, and its structure comprises power end and two parts of fluid end.Wherein, power end mainly comprises support assembly, crank assemblby, small gear assembly and cross head assembly etc., it by driving gear and crank connecting by transmission of power to fluid end; Fluid end mainly comprises fluid cylinder, pump head, center pull rod etc., and it is discharged drilling fluid by the to-and-fro motion of piston with certain pressure and flow.And center pull rod is the connection hinge of drilling well pump power end and fluid end, the gear pump in the dynamic end in joint of it and power end provides oil lubricating; To carry out lubrication with clean water by the spray pump of fluid end cooling with the joint of fluid end.
Enter into the oil sump of power end for fear of the cooling water of fluid end, damage machine oil, common way is exactly to install rubber is set at the root of center pull rod, and seal ring carries out encapsulation process.Because the reciprocatory motion of piston, center pull rod is also being carried out axially reciprocating simultaneously, in the effect that is subject to thrust upwards, make it to produce beating radially, this meeting of beating radially produces larger extruding force to seal ring, the degree of wear of seal ring is strengthened, cause the lifetime of seal ring, affect the working efficiency of drilling pump; The collar and the O type circle that adopt on the market at present seal center pull rod, but center pull rod is in the time carrying out axially reciprocating, center pull rod and the mutual friction of O type circle phase, and then accelerate the aging of O type circle and wear and tear, cause activity place of center pull rod to occur the phenomenons such as leakage of oil, reduce working efficiency.
Model utility content
The purpose of this utility model is to provide the center pull rod that can automatically regulate sealing, reduces the wearing and tearing that when center pull rod moves reciprocatingly, seal ring caused, extends the working life of seal ring.
The purpose of this utility model is achieved through the following technical solutions:
Can automatically regulate the center pull rod of sealing, comprise stationary magazine creel, stationary magazine creel is arranged on the pump housing, in described stationary magazine creel, have movable cavity, the inside of described stationary magazine creel is provided with the sleeve pipe of two both ends opens, center pull rod runs through sleeve pipe, the two end part of stationary magazine creel are placed in the pump housing, on described movable cavity inner wall, annular array is provided with multiple cylinders, the output terminal of cylinder is connected with strut, the end of strut is provided with roller, middle part at stationary magazine creel is provided with elastic seal ring, the middle part of described elastic seal ring is provided with projection, described roller contacts with projection through sleeve pipe, elastic seal ring is compressed until contact with center pull rod, also comprise pressure transducer, described pressure transducer is arranged on the bottom of roller and contacts with projection, and described pressure transducer is connected with the drive unit of cylinder by wire.The utility model is in use easy to wear and cause center pull rod place that the improvement made occurs to leak for the seal ring in the sealing configuration of existing drilling pump center pull rod, in movable cavity, sleeve pipe is arranged on the both sides of stationary magazine creel, and centering pull bar top, the deformation that the elastic seal ring arranging at sleeve pipe middle part can occur to go up largely, roller pressure elasticity seal ring, the state in deformation all the time that makes it contacts with center pull rod upper surface, to reach the effect of sealing; Multiple strut annular arrays are fixed on the inwall of stationary magazine creel, provide pressure from different angles to elastic seal ring, ensure elastic seal ring with center pull rod outer wall close contact.When work, center pull rod is carried out reciprocal axial motion, the sleeve pipe that drive is arranged in center pull rod moves, strut in stationary magazine creel maintains static, roller does relative motion with elastic seal ring on the outer surface of elastic seal ring, be that elastic seal ring moves axially and roller is motionless, roller remains the part on elastic seal ring is produced to the chucking power of pressure to provide elastic seal ring to seal, reduced the area of contact of elastic seal ring and center pull rod simultaneously, and then reduce wearing and tearing, extend the working life of sealing configuration, elastic seal ring in use there will be certain loss, make its thickness attenuation, and then cause the sealability between center pull rod and the pump housing to weaken, roller ensures the close contact with elastic seal ring all the time, interaction force between the two makes the checkout value of pressure transducer keep constant, after the thickness wearing and tearing attenuation of elastic seal ring, interaction force between pressure transducer and projection is reduced, signal is transferred to cylinder by pressure transducer, the drive unit of cylinder starts, promotion strut moves, make contact stress between roller and the elastic seal ring of the strut end reference value before replying, contact stress between elastic seal ring and center pull rod outer wall is replied, and then ensure center pull rod after elastic seal ring wearing and tearing and the excellent sealing between the pump housing, the projection of installing at the middle part of elastic seal ring, can ensure that seal ring ensures all the time the sealability of center pull rod under the environment of constantly wearing and tearing, realize the sealing property adjusted of center pull rod, extend the working life of seal ring.
Distance between described sleeve pipe and elastic seal ring be sleeve pipe and center pull rod total backlash 2/3rds.For further strengthening the sealability of elastic seal ring, elastic seal ring is arranged in the gap between sleeve pipe and center pull rod, make roller in the time pressing down elastic seal ring, keep enough downforce and then ensure elastic seal ring and center pull rod close contact, and the distance between sleeve pipe and elastic seal ring be sleeve pipe and center pull rod total backlash 2/3rds, make elastic seal ring ensure that himself deformation quantity is under its greatest limit deformation quantity, reduce the wearing and tearing of sealed elastic circle, extend the working life of elastic seal ring.
Described roller is universal wheels.As preferably, roller adopts universal wheels, in the axially reciprocating of center pull rod, elastic seal ring parcel center pull rod, universal wheels provides stress support for the close contact of elastic seal ring and center pull rod, in the time of center pull rod generation circular runout, universal wheels can keep relative static with center pull rod always, ensures the sealing effect of elastic seal ring and center pull rod.
The utility model compared with prior art, has following advantage and beneficial effect:
1, the utility model can regulate the center pull rod of sealing automatically, after the thickness wearing and tearing attenuation of elastic seal ring, interaction force between pressure transducer and projection is reduced, signal is transferred to cylinder by pressure transducer, the drive unit of cylinder starts, promotion strut moves, make contact stress between roller and the elastic seal ring of the strut end reference value before replying, contact stress between elastic seal ring and center pull rod outer wall is replied, and then ensure center pull rod after elastic seal ring wearing and tearing and the excellent sealing between the pump housing, the projection of installing at the middle part of elastic seal ring, can ensure that seal ring ensures all the time the sealability of center pull rod under the environment of constantly wearing and tearing, realize the sealing property adjusted of center pull rod, extend the working life of seal ring,
2, the utility model can regulate the center pull rod of sealing automatically, distance between sleeve pipe and elastic seal ring be sleeve pipe and center pull rod total backlash 2/3rds, make elastic seal ring ensure that himself deformation quantity is under its greatest limit deformation quantity, reduce the wearing and tearing of sealed elastic circle, extend the working life of elastic seal ring;
3, the utility model can regulate the center pull rod of sealing automatically, the projection of installing at the middle part of elastic seal ring, can ensure that seal ring ensures all the time the sealability of center pull rod under the environment of constantly wearing and tearing, realize the sealing property adjusted of center pull rod, extend the working life of seal ring, and center pull rod there will be certain circular runout in movement process, the material of projection is identical with the material of elastic seal ring, the effect producing of beating radially can be eliminated stress, ensure the stable movement of center pull rod.
Brief description of the drawings
Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms the application's a part, does not form the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the utility model structural representation;
Mark and corresponding component title in accompanying drawing:
1-stationary magazine creel, 2-center pull rod, the 3-pump housing, 4-sleeve pipe, 5-elastic seal ring, 6-strut, 7-roller, 8-projection, 9-pressure transducer, 10-cylinder.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.
Embodiment 1
As shown in Figure 1, the utility model can regulate the center pull rod of sealing automatically, comprise stationary magazine creel 1, stationary magazine creel 1 is arranged on the pump housing 3, in described stationary magazine creel 1, have movable cavity, the inside of described stationary magazine creel 1 is provided with the sleeve pipe 4 of two both ends opens, center pull rod 2 runs through sleeve pipe 4, the two end part of stationary magazine creel 1 are placed in the pump housing 3, on described movable cavity inner wall, annular array is provided with multiple cylinders 10, the output terminal of cylinder 10 is connected with strut 6, the end of strut 6 is provided with roller 7, at the middle part of stationary magazine creel 1, elastic seal ring 5 is installed, the middle part of described elastic seal ring 5 is provided with projection 8, described roller 7 contacts with projection 8 through sleeve pipe 4, elastic seal ring 5 is compressed until contact with center pull rod 2, also comprise pressure transducer 9, described pressure transducer 9 is arranged on the bottom of roller 7 and contacts with projection 8, and described pressure transducer 9 is connected with the drive unit of cylinder 10 by wire.The utility model is in use easy to wear and cause center pull rod 2 places that the improvement made occurs to leak for the seal ring in the sealing configuration of existing drilling pump center pull rod 2, in movable cavity, sleeve pipe 4 is arranged in center pull rod 2, the deformation that the elastic seal ring 5 arranging at sleeve pipe 4 middle parts can occur to go up largely, roller 7 pressure elasticity seal rings 5, the state in deformation all the time that makes it contacts with center pull rod 2 upper surfaces, to reach the effect of sealing; Multiple strut 6 annular arrays are fixed on the inwall of stationary magazine creel 1, provide pressure from different angles to elastic seal ring 5, ensure elastic seal ring 5 with center pull rod outer wall close contact.
When work, center pull rod 2 is carried out reciprocal axial motion, the sleeve pipe 4 that drive is arranged in center pull rod 2 moves, strut 6 in stationary magazine creel 1 maintains static, roller 7 does relative motion with elastic seal ring 5 on the outer surface of elastic seal ring 5, be that elastic seal ring 5 moves axially and roller 7 is motionless, roller 7 remains the part on elastic seal ring 5 is produced to the chucking power of pressure to provide elastic seal ring 5 to seal, reduced the area of contact of elastic seal ring 5 with center pull rod 2 simultaneously, and then reduce wearing and tearing, extend the working life of sealing configuration, elastic seal ring 5 in use there will be certain loss, make its thickness attenuation, and then cause the sealability between center pull rod 2 and the pump housing 3 to weaken, roller 7 ensures the close contact with elastic seal ring 5 all the time, interaction force between the two makes the checkout value of pressure transducer 9 keep constant, after the thickness wearing and tearing attenuation of elastic seal ring 5, interaction force between pressure transducer 9 and projection 8 is reduced, signal is transferred to cylinder 10 by pressure transducer 9, the drive unit of cylinder 10 starts, promoting strut 6 moves, make contact stress between roller 7 and the elastic seal ring 5 of the strut 6 ends reference value before replying, contact stress between elastic seal ring 5 and center pull rod 2 outer walls is replied, and then ensure center pull rod 2 after elastic seal ring 5 wearing and tearing and the excellent sealing between the pump housing 3, the projection 8 of installing at the middle part of elastic seal ring 5, can ensure that seal ring ensures all the time the sealability of center pull rod 2 under the environment of constantly wearing and tearing, realize the sealing property adjusted of center pull rod 2, extend the working life of seal ring.
Embodiment 2
As shown in Figure 1, the utility model can regulate the center pull rod of sealing automatically, and the distance between described sleeve pipe 4 and elastic seal ring 5 is sleeve pipe 4 and 2/3rds of the total backlash of center pull rod 2.For further strengthening the sealability of elastic seal ring 5, elastic seal ring 5 is arranged in the gap between sleeve pipe 4 and center pull rod 2, make roller 7 in the time pressing down elastic seal ring 5, keep enough downforce and then ensure elastic seal ring 5 and center pull rod 2 close contacts, and the distance between sleeve pipe 4 and elastic seal ring 5 is sleeve pipe 4 and 2/3rds of the total backlash of center pull rod 2, make elastic seal ring 5 ensure that himself deformation quantity is under its greatest limit deformation quantity, reduce the wearing and tearing of elastic seal ring 5, extend the working life of elastic seal ring 5.
As preferably, roller 7 adopts universal wheels, in the axially reciprocating of center pull rod 2, elastic seal ring 5 wraps up center pull rod, universal wheels provides stress support for elastic seal ring 5 and the close contact of center pull rod 2, in the time that circular runout occurs center pull rod 2, universal wheels can keep relative static with center pull rod always, ensures the sealing effect of elastic seal ring 5 and center pull rod 2.
Above-described embodiment; the purpose of this utility model, technological scheme and beneficial effect are further described; institute is understood that; the foregoing is only embodiment of the present utility model; and be not used in limit protection domain of the present utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. can automatically regulate the center pull rod of sealing, comprise stationary magazine creel (1), stationary magazine creel (1) is arranged on the pump housing (3), in described stationary magazine creel (1), have movable cavity, it is characterized in that: the inside of described stationary magazine creel (1) is provided with the sleeve pipe (4) of two both ends opens, center pull rod (2) runs through sleeve pipe (4), the two end part of stationary magazine creel (1) are placed in the pump housing (3), on described movable cavity inner wall, annular array is provided with multiple cylinders (10), the output terminal of cylinder (10) is connected with strut (6), the end of strut (6) is provided with roller (7), at the middle part of stationary magazine creel (1), elastic seal ring (5) is installed, the middle part of described elastic seal ring (5) is provided with projection (8), described roller (7) contacts with projection (8) through sleeve pipe (4), elastic seal ring (5) is compressed until contact with center pull rod (2), also comprise pressure transducer (9), described pressure transducer (9) is arranged on the bottom of roller (7) and contacts with projection (8), and described pressure transducer (9) is connected with the drive unit of cylinder (10) by wire.
2. the center pull rod that can automatically regulate sealing according to claim 1, is characterized in that: the distance between described sleeve pipe (4) and elastic seal ring (5) is sleeve pipe (4) and 2/3rds of the total backlash of center pull rod (2).
3. according to the center pull rod that can automatically regulate sealing described in claim 1 ~ 2 any one, it is characterized in that: described roller (7) is universal wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373943.4U CN203906255U (en) | 2014-07-08 | 2014-07-08 | Central pull rod capable of being automatically adjusted for sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373943.4U CN203906255U (en) | 2014-07-08 | 2014-07-08 | Central pull rod capable of being automatically adjusted for sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906255U true CN203906255U (en) | 2014-10-29 |
Family
ID=51780540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420373943.4U Expired - Fee Related CN203906255U (en) | 2014-07-08 | 2014-07-08 | Central pull rod capable of being automatically adjusted for sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906255U (en) |
-
2014
- 2014-07-08 CN CN201420373943.4U patent/CN203906255U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Federer petroleum equipment (Qingdao) Co., Ltd. Assignor: Qiu Dong Contract record no.: 2015990000693 Denomination of utility model: Central pull rod capable of being automatically adjusted for sealing Granted publication date: 20141029 License type: Exclusive License Record date: 20150727 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20210708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |