CN204175585U - Slurry pump active sealing piston - Google Patents
Slurry pump active sealing piston Download PDFInfo
- Publication number
- CN204175585U CN204175585U CN201420641139.XU CN201420641139U CN204175585U CN 204175585 U CN204175585 U CN 204175585U CN 201420641139 U CN201420641139 U CN 201420641139U CN 204175585 U CN204175585 U CN 204175585U
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- CN
- China
- Prior art keywords
- sealing
- lip
- cup
- active sealing
- pressure
- 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 - Fee Related
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Abstract
The utility model provides slurry pump active sealing piston, the Step Shaft of metal-cored upper end is provided with sealing cup, sealing cup top has stop pressing plate connect with sealing cup and be fixedly connected with metal-cored by screw, sealing cup has annular groove on the toroidal surface of stop pressing plate side, stop pressing plate has some flowing holes, and sealing cup outer surface extends passive seal lip and realizing active sealing lip.Piston operationally, passive seal lip and realizing active sealing lip coordinate generation effect, when pressure is very little, realizing active sealing lip does not produce seal action, when pressure becomes large, the pressure of mud makes realizing active sealing lip be out of shape outer rising, produce seal action, the pressure that sealing produces changes along with the pressure of mud, thus realizes realizing active sealing effect, owing to achieving the working principle of two-part Initial adaption pressure, reduce the frequency of usage of leather cup, have and increase the service life, good sealing effect, the uninfluenced feature of piston, favourablely promotes the use of.
Description
technical field:
The utility model relates to geologic prospecting apparatus field, is specifically related to slurry pump active sealing piston.
background technique:
Slurry pump is geologic prospecting, the heart of petroleum production, along with drilling technology, particularly high-pressure jet drilling, near-balance drilling, clump formula directional well, the new procesies such as horizontal well, the development of new technology, drilling pump is further to high-power, huge discharge and high pump pressure direction advance, as the drilling pump of rig " heart ", there are direct relation in its performance level and working life with bit speed and cost of production, its operating conditions is very severe again simultaneously, operating mode is complex also, more and more higher requirement is proposed to the reliability of drilling pump and Security, the first cause of the seal fails of wellbore pump piston is that power of slush pump and discharge capacity are very large, installation conditions is poor again, therefore improve to because of jig frequency the impact caused, vibration is comparatively responsive, the life-span of easily damaged parts is short and easy inefficacy suddenly causes security incident.
model utility content:
In order to overcome the deficiency of background technique, the utility model provides slurry pump active sealing piston to solve the problem.
The technical solution of the utility model is: slurry pump active sealing piston, comprise metal-cored, the Step Shaft of metal-cored upper end is provided with sealing cup, sealing cup top has stop pressing plate connect with sealing cup and be fixedly connected with metal-cored by screw, sealing cup has annular groove on the toroidal surface of stop pressing plate side, and stop pressing plate has some flowing holes.
Described sealing cup, its outer cylinder surface extends two protruding cambridge rings, and top is passive seal lip, and the projection of sealing cup waist is realizing active sealing lip.
Described realizing active sealing lip, the diameter of its maximum extending part is less than the maximum diameter 2 ~ 3mm of passive seal lip.
Described realizing active sealing lip, its lip lower end extends one section of cylindric directional post.
Described sealing cup has annular groove on the toroidal surface of stop pressing plate side, and the groove outer wall of annular groove and the cross section of realizing active sealing lip are similar figures and material between groove outer wall and realizing active sealing lip keeps uniform wall thickness.
The utility model has following beneficial effect: passive by arranging, initiatively two sealing lips, make this piston operationally, passive seal lip and realizing active sealing lip coordinate generation effect, when pressure is very little, realizing active sealing lip does not produce seal action, when pressure becomes large, the pressure of mud acts on annular groove simultaneously, realizing active sealing lip is made to be out of shape outer rising, produce seal action, the pressure that sealing produces changes along with the pressure of mud, thus realize realizing active sealing effect, owing to achieving the working principle of two-part Initial adaption pressure, reduce the frequency of usage of leather cup, have and increase the service life, good sealing effect, the uninfluenced feature of piston, favourablely to promote the use of.
accompanying drawing illustrates:
Accompanying drawing 1 is structural representation of the present utility model.
In figure, 1-is metal-cored, 2-sealing cup, 3-annular groove, 4-groove outer wall, 5-stop pressing plate, 6-screw, 7-realizing active sealing lip, 8-passive seal lip, 9-flowing hole, and 10-is directional post initiatively.
embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, slurry pump active sealing piston, comprise metal-cored 1, the Step Shaft of the upper end of metal-cored 1 is provided with sealing cup 2, sealing cup 2 top has stop pressing plate 5 connect with sealing cup 2 and be fixedly connected with metal-cored 1 by screw 6, sealing cup 2 has annular groove 3 on the toroidal surface of stop pressing plate 5 side, stop pressing plate 5 has some flowing holes 9.
Described sealing cup 2, its outer cylinder surface extends two protruding cambridge rings, and top is passive seal lip 8, and the projection of sealing cup 2 waist is realizing active sealing lip 7.
Described realizing active sealing lip 7, the diameter of its maximum extending part is less than the maximum diameter 2 ~ 3mm of passive seal lip 8, when pressure is little, realizing active sealing lip 7 does not seal, when pressure is large, realizing active sealing lip 7 rises by the mud pressure distortion in annular groove 3 is outer, plays the effect of realizing active sealing.
Described realizing active sealing lip 7, its lip lower end extends one section of cylindric directional post 10, plays leading role, avoid piston to produce bias when pressure surge while sealing.
Described sealing cup 2 has annular groove 3 on the toroidal surface of stop pressing plate 5 side, the groove outer wall 4 of annular groove 3 and the cross section of realizing active sealing lip 7 are similar figures and material between groove outer wall 4 and realizing active sealing lip 7 keeps uniform wall thickness, make realizing active sealing lip be out of shape evenly, improve working life.
Passive by arranging, initiatively two sealing lips, make this piston operationally, passive seal lip 9 and realizing active sealing lip 7 coordinate generation effect, when pressure is very little, realizing active sealing lip 7 does not produce seal action, when pressure becomes large, the pressure of mud acts on annular groove 3 simultaneously, realizing active sealing lip 7 is made to be out of shape outer rising, produce seal action, the pressure that sealing produces changes along with the pressure of mud, thus realize realizing active sealing effect, owing to achieving the working principle of two-part Initial adaption pressure, reduce the frequency of usage of leather cup, have and increase the service life, good sealing effect, the feature effective to the heart, favourablely to promote the use of.
Claims (5)
1. a slurry pump active sealing piston, comprise metal-cored (1), it is characterized in that: the Step Shaft of the upper end of metal-cored (1) is provided with sealing cup (2), sealing cup (2) top has stop pressing plate (5) connect with sealing cup (2) and be fixedly connected with metal-cored (1) by screw (6), sealing cup (2) has annular groove (3) on the toroidal surface of stop pressing plate (5) side, stop pressing plate (5) has some flowing holes (9).
2. slurry pump active sealing piston according to claim 1, it is characterized in that: described sealing cup (2), its outer cylinder surface extends two protruding cambridge rings, top is passive seal lip (8), and the projection of sealing cup (2) waist is realizing active sealing lip (7).
3. slurry pump active sealing piston according to claim 2, is characterized in that: described realizing active sealing lip (7), and the diameter of its maximum extending part is less than the maximum diameter 2 ~ 3mm of passive seal lip (8).
4. slurry pump active sealing piston according to claim 2, is characterized in that: described realizing active sealing lip (7), and its lip lower end extends one section of cylindric directional post (10).
5. slurry pump active sealing piston according to claim 1 and 2, it is characterized in that: described sealing cup (2) has annular groove (3) on the toroidal surface of stop pressing plate (5) side, the groove outer wall (4) of annular groove (3) and the cross section of realizing active sealing lip (7) are similar figures and material between groove outer wall (4) and realizing active sealing lip (7) keeps uniform wall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641139.XU CN204175585U (en) | 2014-10-31 | 2014-10-31 | Slurry pump active sealing piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420641139.XU CN204175585U (en) | 2014-10-31 | 2014-10-31 | Slurry pump active sealing piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175585U true CN204175585U (en) | 2015-02-25 |
Family
ID=52564396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420641139.XU Expired - Fee Related CN204175585U (en) | 2014-10-31 | 2014-10-31 | Slurry pump active sealing piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175585U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757430A (en) * | 2018-08-16 | 2018-11-06 | 中船勘察设计研究院有限公司 | The leak-proof device of reciprocating pump |
| CN116085250A (en) * | 2023-01-10 | 2023-05-09 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
-
2014
- 2014-10-31 CN CN201420641139.XU patent/CN204175585U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757430A (en) * | 2018-08-16 | 2018-11-06 | 中船勘察设计研究院有限公司 | The leak-proof device of reciprocating pump |
| CN116085250A (en) * | 2023-01-10 | 2023-05-09 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
| CN116085250B (en) * | 2023-01-10 | 2023-11-24 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |