CN201347853Y - Sealing device for intermediate rod of drill pump - Google Patents
Sealing device for intermediate rod of drill pump Download PDFInfo
- Publication number
- CN201347853Y CN201347853Y CNU2009200187741U CN200920018774U CN201347853Y CN 201347853 Y CN201347853 Y CN 201347853Y CN U2009200187741 U CNU2009200187741 U CN U2009200187741U CN 200920018774 U CN200920018774 U CN 200920018774U CN 201347853 Y CN201347853 Y CN 201347853Y
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- CN
- China
- Prior art keywords
- seal
- seal ring
- sealing
- intermediate rod
- ring
- 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 discloses a sealing device for an intermediate rod of a drill pump. The device comprises a seal box (2) fixed on a pump body (1); and an unloading hole (6) is formed at the lower part of the seal box (2). The device is characterized in that a seal ring (3) is arranged between the seal box (2) and an intermediate rod (4); the two ends of the section of the seal ring (3) are in the shape of Y, a lug boss is arranged in the middle of the outer surface thereof, and a groove is formed in the middle of the inner surface thereof; and the outer end surface of the seal ring (3) is positioned in the axial direction through a retainer ring (5). By replacing the prior seal device of the complex combined structure of a double-framework oil seal, a spacer sleeve and an O-shaped seal ring with an integral seal ring, the device has the advantages that the problems of the prior structure are overcome; the problems are as follows: the prior structure is provided with a crosshead, the intermediate rod moves downwards because of the abrasion of a guide plate, the oil seal ring cannot follow the displacement, and leakage is caused by invalidated sealing; and the utility model can improve the seal reliability by 20% to 25%, and save the seal cost by 15% to 20% under the same use conditions.
Description
Technical field
The utility model belongs to a kind of seal arrangement of shaft element, and definite saying is a kind of drilling pump Jie rod seal device.
Background technique
For the sealing of the reciprocating Jie's bar of drilling pump, two big classes are generally arranged at present, a class is the seal arrangement of the bellow type of SL series, and is effectively reliable.Another kind of is F series drilling pump, adopts two outside framework oil seals to add the complicated sealing configuration of separation sleeve and O-ring seals, and the bar that causes being situated between after original structure crosshead, the guide plate wearing and tearing moves down, and its oil seal washer can not be followed displacement, and seal failure forms leaks.In order to solve the leakage problem of F series drilling pump, designer of the present utility model has done research in earnest, has proposed goal of the invention of the present utility model.
Summary of the invention
Goal of the invention of the present utility model is to put forward for the problem that overcomes the seal leakage that present F series drilling pump exists.A kind of drilling pump Jie rod seal device promptly is provided.
Technical solution of the present utility model is to realize like this, this kind drilling pump Jie rod seal device, has a sealing case [2] that is fixed on the pump housing [1], has a unloading hole [6] in the bottom of sealing case [2], it is characterized in that having in the seal groove between sealing case [2] and Jie's bar [4] cross section is that two ends are Y shapes, the centre of outer surface has a boss, and the centre of internal surface has the seal ring [3] of a groove, and the exterior edge face of sealing circle [3] is by back-up ring [5] axially locating.
Beneficial technical effects of the present utility model is: the seal ring by an integral form replaces original two outside framework oil seals to add the seal arrangement of the complex combination structure of separation sleeve and O-ring seals, after Jie's bar moves down owing to wearing and tearing cause, the y-shaped ring lip can be followed the compensation of Jie's bar by resiliently deformable, does not influence sealing effect.Under same service condition, can improve sealing reliability 20%-25%, save sealing cost 15%-20%.
Description of drawings
Accompanying drawing is a cross-section structure view of the present utility model.Sequence number in the accompanying drawings is described as: 1, the pump housing, 2, sealing case, 3, seal ring, 4, Jie's bar, 5, back-up ring, 6, unloading hole.
Embodiment
Below in conjunction with the embodiment who provides in the accompanying drawing, structure of the present utility model and use are elaborated.With reference to accompanying drawing, this kind drilling pump Jie rod seal device, has a sealing case [2] that is fixed on the pump housing [1], has a unloading hole [6] in the bottom of sealing case [2], it is characterized in that having in the seal groove between sealing case [2] and Jie's bar [4] cross section is that two ends are Y shapes, the centre of outer surface has a boss, and the centre of internal surface has the seal ring [3] of a groove, and the exterior edge face of sealing circle [3] is by back-up ring [5] axially locating.Seal ring adopts the material of good springiness oil resistant.The Y type sealing at two ends closely contacts with the sealing case wall with the external diameter of Jie's bar, particularly the pump case the inside is that part of, the boss of the external diameter circumferential surface of the internal diameter of sealing case and sealing gasket forms another sealing surface, because the pressure at reciprocating frequency and Jie's bar place is all not high, one minute the highest also dashes with regard to 100-150, even such structure has a spot of oil leak to go over, also can reflux in the pump housing through the unloading hole of the gap between Y shape sealing and the boss, reduced leakage rate, the sealing that like this, has just guaranteed F series drilling pump to-and-fro motion Jie bar effectively is reliable, effectively.
Claims (1)
1, a kind of drilling pump Jie rod seal device, has the sealing case [2] that is fixed on the pump housing [1], has a unloading hole [6] in the bottom of sealing case [2], it is characterized in that having in the seal groove between sealing case [2] and Jie's bar [4] cross section is that two ends are Y shapes, the centre of outer surface has a boss, and the centre of internal surface has the seal ring [3] of a groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2009200187741U CN201347853Y (en) | 2009-02-01 | 2009-02-01 | Sealing device for intermediate rod of drill pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2009200187741U CN201347853Y (en) | 2009-02-01 | 2009-02-01 | Sealing device for intermediate rod of drill pump |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201347853Y true CN201347853Y (en) | 2009-11-18 |
Family
ID=41367323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNU2009200187741U Expired - Lifetime CN201347853Y (en) | 2009-02-01 | 2009-02-01 | Sealing device for intermediate rod of drill pump |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201347853Y (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101839346A (en) * | 2010-04-19 | 2010-09-22 | 胡炜 | Oil seal regulating device and reducer provided with regulating device |
CN102996100A (en) * | 2011-09-08 | 2013-03-27 | 四川宏华石油设备有限公司 | Drilling pump pull rod sealing piece fixing method and fixing device thereof |
CN112160885A (en) * | 2020-10-15 | 2021-01-01 | 中国石油化工股份有限公司 | Plunger pump for oilfield water injection |
-
2009
- 2009-02-01 CN CNU2009200187741U patent/CN201347853Y/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101839346A (en) * | 2010-04-19 | 2010-09-22 | 胡炜 | Oil seal regulating device and reducer provided with regulating device |
CN102996100A (en) * | 2011-09-08 | 2013-03-27 | 四川宏华石油设备有限公司 | Drilling pump pull rod sealing piece fixing method and fixing device thereof |
CN112160885A (en) * | 2020-10-15 | 2021-01-01 | 中国石油化工股份有限公司 | Plunger pump for oilfield water injection |
CN112160885B (en) * | 2020-10-15 | 2022-06-21 | 中国石油化工股份有限公司 | Plunger pump for oilfield water injection |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20091118 |