CN202914309U - Sealing device for shaft extension part of direct drive motor of screw pump - Google Patents
Sealing device for shaft extension part of direct drive motor of screw pump Download PDFInfo
- Publication number
- CN202914309U CN202914309U CN 201220542671 CN201220542671U CN202914309U CN 202914309 U CN202914309 U CN 202914309U CN 201220542671 CN201220542671 CN 201220542671 CN 201220542671 U CN201220542671 U CN 201220542671U CN 202914309 U CN202914309 U CN 202914309U
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- Prior art keywords
- coupling
- seal
- drive motor
- fixing sleeve
- screw pump
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A sealing device for a shaft extension part of a direct drive motor of a screw pump, and overcomes the defects that after the seal of a conventional motor shaft extension part fails, the normal oil production is influenced due to halt maintenance, resulting in increase of the maintenance cost. A bearing, a bearing fixing sleeve and a mechanical seal assembly are arranged in the ring space from the bottom up; the ring space is formed between a part above an internal boss of a shaft extension at the upper end of a motor shaft and a seal pipe; a seal ring is mounted between the lower end part of the bearing fixing sleeve and the seal pipe; the mechanical seal assembly is mounted between the upper end part of the bearing fixing sleeve and the seal pipe; a coupling is mounted on a pumping unit polish rod above the seal pipe; the upper end part of the shaft extension is positioned in an inner hole of the lower end part of the coupling; and a seal device is mounted in a ring space between the upper end part of the coupling and the pumping unit polish rod. The sealing device has the benefits that the structure is simple and reasonable, the sealing and lubricating effects are good, the maintenance and the cleanness are convenient, the abrasion of the matched part can be reduced effectively, the effective operation time of the electric motor is prolonged, and the economic benefit is improved.
Description
Technical field
The utility model relates to the direct driving motor of the used screw pump of a kind of petroleum production, especially relates to a kind of screw pump direct-drive motor-shaft extending section seal arrangement.
Background technique
Driven by the motor shaft of direct driving motor during the oil pumping operation of screw pump that the oil-extractor polish-rod rotation realizes.At present, the motor shaft shaft extension section sealing of screw pump direct-drive motor mostly adopts mechanical seal and rubber-like O RunddichtringO to seal, because more complicated in the oil-extractor polish-rod hand, oil-extractor polish-rod seals the position of matching with motor shaft shaft extension section and weares and teares easily, and local oil leakage phenomenon will appear in seal failure after the wearing and tearing aggravation.After the seal failure of motor shaft shaft extension section, need shutdown to place under repair, what impact was recovered the oil and produced normally carrying out, and causes maintenance expenses to increase.
The model utility content
After overcoming the seal failure of existing motor shaft shaft extension section, shut down and repair normally carrying out that impact recovers the oil and produce, the deficiency that causes maintenance expenses to increase, the utility model provides a kind of screw pump direct-drive motor-shaft extending section seal arrangement.
The technological scheme that its technical problem that solves the utility model adopts is: screw pump direct-drive motor-shaft extending section seal arrangement comprises motor shaft, sealed pipe, oil-extractor polish-rod, and oil-extractor polish-rod is positioned at sealed pipe, and sealed pipe is installed in the core motor axle endoporus.In the shaft extension inner convex platform top of motor shaft upper end and the annular space between the sealed pipe bearing, bearing fixing sleeve, mechanical seal assembly are installed successively from the bottom to top; Between bearing fixing sleeve underpart and the sealed pipe seal ring is installed, seal ring is lip-type packing.The mechanical seal assembly is installed between bearing fixing sleeve upper end portion and the sealed pipe, and is fixedly connected with by the locating stud of radially installing.On the oil-extractor polish-rod of sealed pipe top coupling is installed; The shaft extension upper-end part of driving is in the endoporus of coupling underpart, and the Cock screw that passes through radially to install is connected with key; In the annular space of coupling upper end portion and oil-extractor polish-rod seal arrangement is installed.On the coupling with mechanical seal assembly corresponding position by radially lubricant oil hand-hole, the lubricant oil hand-hole is equipped with sealing screw.The seal arrangement that install the coupling upper end portion comprises metal gasket, rectangular seal, metal gasket from the bottom to top, is fixedly connected with coupling by the tightening trim ring seal arrangement is fixed.Between bearing fixing sleeve and the coupling radial direction seal ring is installed.Be positioned at that on the bearing fixing sleeve, shaft extension, coupling of mechanical seal assembly below radial direction through hole to be arranged be leakage of oil information hole.
The beneficial effects of the utility model are, and are simple and reasonable for structure, and sealing and high lubricating effect are convenient to user's maintenance and cleaning, just can effectively reduce the wearing and tearing of matching part, prolongation motor effective running time, increase economic efficiency.
Description of drawings
Fig. 1 is the utility model screw pump direct-drive motor-shaft extending section schematic diagram of sealing device.
Among the figure: 1. oil-extractor polish-rod, 2. tightening trim ring, 3. rectangular seal, 4. metal gasket, 5. sealing screw, 6. mechanical seal assembly, 7. lubricant oil, 8. seal ring, 9. locating stud, 10. coupling, 11. bearing fixing sleeves, 12. Cock screw, 13. leakage of oil information holes, 14. seal rings, 15. bearing, 16. keys, 17. shaft extensions, 18. sealed pipe, 19. seal arrangements, 20. lubricant oil hand-holes.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.But what those skilled in the art should know is to the invention is not restricted to listed embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
Screw pump direct-drive motor-shaft extending section seal arrangement comprises motor shaft, sealed pipe 18, oil-extractor polish-rod 1, and oil-extractor polish-rod 1 is positioned at sealed pipe 18, and sealed pipe 18 is installed in the core motor axle endoporus.In the shaft extension 17 inner convex platforms top of motor shaft upper end and the annular space between the sealed pipe 18 bearing 15, bearing fixing sleeve 11, mechanical seal assembly 6 are installed successively from the bottom to top.
Between bearing fixing sleeve 11 underparts and the sealed pipe 18 seal ring 14 is installed, seal ring 14 is lip-type packing.Between bearing fixing sleeve 11 upper end portions and the sealed pipe 18 mechanical seal assembly 6 is installed, and is fixedly connected with by the locating stud 9 of radially installing.
On the oil-extractor polish-rod 1 of sealed pipe 18 tops coupling 10 is installed.Shaft extension 17 upper-end part of drivings and are connected connection by the Cock screw 12 of radially installing with key in coupling 10 underpart endoporus; In the annular space of coupling 10 upper end portions and oil-extractor polish-rod 1 seal arrangement 19 is installed.Seal arrangement 19 comprises metal gasket 4, rectangular seal 3, metal gasket 4 from the bottom to top, the quantity of rectangular seal 3 is more than 2 or 2, and be fixedly connected with seal arrangement 19 fixing with coupling 10 by tightening trim ring 2, usually tightening trim ring 2 adopts with coupling 10 and is threaded, and guarantees that by regulating tightening trim ring 2 seal arrangement 19 reaches good sealing effect.Between bearing fixing sleeve 11 and the coupling 10 radial direction seal ring 8 is installed.
On coupling 10, with mechanical seal assembly 6 corresponding positions radially lubricant oil hand-hole 20 is arranged, can inject lubricant oil 7 by lubricant oil hand-hole 20 as required, sealing screw 5 is installed after injecting lubricant oil.
Whether has in process of production qualified sealability for the ease of grasping motor-shaft extending section seal arrangement, it is leakage of oil information hole 13 that bearing fixing sleeve 11 below mechanical seal assembly 6, shaft extension 17, coupling 10 have radial direction through hole, when mechanical seal assembly 6 goes wrong, there is liquid to flow out from leakage of oil information hole, reminds operator in time to take maintenance measure.
It should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (6)
1. a screw pump direct-drive motor-shaft extending section seal arrangement comprises motor shaft, sealed pipe, oil-extractor polish-rod, and oil-extractor polish-rod is positioned at sealed pipe, and sealed pipe is installed in the core motor axle endoporus, it is characterized in that:
In shaft extension (17) the inner convex platform top of described motor shaft upper end and the annular space between the sealed pipe (18) bearing (15), bearing fixing sleeve (11), mechanical seal assembly (6) are installed successively from the bottom to top; Between bearing fixing sleeve (11) underpart and the sealed pipe (18) seal ring (14) is installed; Between bearing fixing sleeve (11) upper end portion and the sealed pipe (18) mechanical seal assembly (6) is installed, and is fixedly connected with by the locating stud (9) of radially installing;
On the oil-extractor polish-rod (1) of described sealed pipe (18) top coupling (10) is installed; Described shaft extension (17) upper-end part of driving is in the endoporus of coupling (10) underpart, and the Cock screw (12) that passes through radially to install is connected 16 with key) connect; Seal arrangement (19) is installed in the annular space of coupling (10) upper end portion and oil-extractor polish-rod (1).
2. described screw pump direct-drive motor-shaft extending section seal arrangement according to claim 1, it is characterized in that: there is lubricant oil hand-hole (20) radially on the described coupling (10) and mechanical seal assembly (6) corresponding position, and lubricant oil hand-hole (20) is equipped with sealing screw (5).
3. described screw pump direct-drive motor-shaft extending section seal arrangement according to claim 2, it is characterized in that: the seal arrangement (19) that install described coupling (10) upper end portion comprises metal gasket (4), rectangular seal (3), metal gasket (4) from the bottom to top, is fixedly connected with seal arrangement (19) fixing with coupling (10) by tightening trim ring (2).
4. described screw pump direct-drive motor-shaft extending section seal arrangement according to claim 3, it is characterized in that: described seal ring (14) is lip-type packing.
5. described screw pump direct-drive motor-shaft extending section seal arrangement according to claim 4 is characterized in that: between described bearing fixing sleeve (11) and the coupling (10) radial direction seal ring (8) is installed.
6. arbitrary described screw pump direct-drive motor-shaft extending section seal arrangement according to claim 1-5 is characterized in that: on the described bearing fixing sleeve (11) that is positioned at mechanical seal assembly (6) below, shaft extension (17), the coupling (10) radial direction through hole being arranged is leakage of oil information hole (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220542671 CN202914309U (en) | 2012-10-23 | 2012-10-23 | Sealing device for shaft extension part of direct drive motor of screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220542671 CN202914309U (en) | 2012-10-23 | 2012-10-23 | Sealing device for shaft extension part of direct drive motor of screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914309U true CN202914309U (en) | 2013-05-01 |
Family
ID=48162628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220542671 Expired - Lifetime CN202914309U (en) | 2012-10-23 | 2012-10-23 | Sealing device for shaft extension part of direct drive motor of screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840502A (en) * | 2016-05-31 | 2016-08-10 | 浙江西传电气科技有限公司 | Screw pump direct-drive motor sealing structure |
-
2012
- 2012-10-23 CN CN 201220542671 patent/CN202914309U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840502A (en) * | 2016-05-31 | 2016-08-10 | 浙江西传电气科技有限公司 | Screw pump direct-drive motor sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200918 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. Patentee after: BOHAI PETROLEUM EQUIPMENT CHENGDE PETROLEUM MACHINERY CO.,LTD. Address before: 300280 Tianjin Binhai New Area Xin Huan Xi Road No. 3 Tianjin Binhai Service Outsourcing Industry Park No. 19 Building Patentee before: CNPC BOHAI EQUIPMENT MANUFACTURING Co.,Ltd. Patentee before: BOHAI PETROLEUM EQUIPMENT CHENGDE PETROLEUM MACHINERY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |