CN214464439U - Main oil pump of steam turbine - Google Patents
Main oil pump of steam turbine Download PDFInfo
- Publication number
- CN214464439U CN214464439U CN202023118928.XU CN202023118928U CN214464439U CN 214464439 U CN214464439 U CN 214464439U CN 202023118928 U CN202023118928 U CN 202023118928U CN 214464439 U CN214464439 U CN 214464439U
- Authority
- CN
- China
- Prior art keywords
- impeller
- main oil
- oil pump
- steam turbine
- oil
- 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 discloses a steam turbine main oil pump, including the main oil pump casing, its bottom is formed with respectively with inside communicating oil inlet and oil-out, and it is inside to install the impeller through a pair of floating ring, the front side of impeller is connected with the pump shaft of perpendicular to impeller, the impeller passes through the end cover and seals, establish the oil seal ring in the end cover, the oil seal ring seals in the circumference of pump shaft. The utility model discloses a steam turbine main oil pump is through setting up the floating ring at impeller front side and rear side to and set up the oil seal ring at pump shaft circumference, when guaranteeing the normal work of steam turbine, improve sealing performance, avoid the oil leak.
Description
Technical Field
The utility model relates to a steam turbine part technical field, concretely relates to steam turbine main oil pump.
Background
The main oil pump of the turbine is directly connected with the turbine rotor, and oil is supplied by the oil injector, so that the oil for regulation and lubrication is provided for the normal operation of the unit. In order to avoid oil leakage and ensure the normal operation of the steam turbine, the sealing performance of the main oil pump is very important.
Disclosure of Invention
An object of the utility model is to improve the sealing performance of steam turbine main oil pump, provide a steam turbine main oil pump.
The utility model provides a technical scheme that technical problem adopted as follows:
the utility model provides a steam turbine main oil pump, includes the main oil pump casing, its bottom be formed with respectively with inside communicating oil inlet and oil-out, its inside impeller of installing through a pair of floating ring, the front side of impeller is connected with the pump shaft of perpendicular to impeller, the impeller passes through the end cover and seals, establish the oil seal ring in the end cover, the oil seal ring seals in the circumference of pump shaft.
Further, the impeller is connected with one end of the pump shaft through a screw plug and a fixed key.
Further, two floating rings are respectively installed on the front side and the rear side of the impeller, and a floating gap is ensured through a positioning pin.
Further, the end cover is fixed at the front end of the main oil pump shell through bolts.
Further, the main oil pump shell comprises an upper cover and a base which are mutually buckled and connected through bolts, and an inner cavity for accommodating the rotation of the impeller is formed in the relative position of the upper cover and the base.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a steam turbine main oil pump is through setting up the floating ring at impeller front side and rear side to and set up the oil seal ring at pump shaft circumference, when guaranteeing the normal work of steam turbine, improve sealing performance, avoid the oil leak.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural diagram of a main oil pump of a steam turbine provided by an embodiment of the present invention.
Description of reference numerals:
1. the main oil pump comprises a main oil pump shell, 2 parts of a floating ring, 3 parts of a screw plug, 4 parts of an impeller, 5 parts of a fixed key, 6 parts of a bolt, 7 parts of an oil seal ring, 8 parts of a pump shaft, 9 parts of an end cover and 10 parts of a positioning pin.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model discloses a steam turbine main oil pump, including main oil pump casing 1, floating ring 2, plug screw 3, impeller 4, fixed key 5, bolt 6, oil seal ring 7, pump shaft 8, end cover 9 and locating pin 10, wherein: an oil inlet and an oil outlet which are communicated with the inside are formed at the bottom of the main oil pump shell 1, an impeller 4 is installed in the main oil pump shell through a pair of floating rings 2, specifically, the main oil pump shell 1 comprises an upper cover and a base which are mutually buckled and connected through bolts, and an inner cavity for accommodating the impeller 4 to rotate is formed in the relative position of the upper cover and the base. The two floating rings 2 are respectively installed at the front side and the rear side of the impeller 4, and a floating gap is ensured by a positioning pin 10. During installation care is taken that the top locating pin 10 cannot be pressed to ensure a floating clearance. The front side of the impeller 4 is connected with a pump shaft 8 perpendicular to the impeller 4, and specifically, the impeller 4 is connected with one end of the pump shaft 8 through a screw plug 3 and a fixed key 5. The impeller 4 is closed by an end cover 9, and specifically, the end cover 9 is fixed to the front end of the main oil pump housing 1 by bolts 6. An oil seal ring 7 is arranged in the end cover 9, and the oil seal ring 7 is sealed in the circumferential direction of a pump shaft 8.
The utility model discloses a steam turbine main oil pump is through setting up the floating ring at impeller front side and rear side to and set up the oil seal ring at pump shaft circumference, when guaranteeing the normal work of steam turbine, improve sealing performance, avoid the oil leak.
As a preferred implementation mode, in order to improve the suction performance of the main oil pump and ensure the normal operation of the main oil pump, the main oil pump is matched with the oil suction ejector for use. In order to ensure the stable oil pressure at the outlet, the oil pressure at the inlet of the main oil pump needs to be 0.02-0.05 MPa. In addition, a pressure gauge can be installed on the inlet oil pipe of the main oil pump. And a check valve is arranged on an oil outlet of the main oil pump to prevent oil from returning to the bearing seat.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (5)
1. The utility model provides a steam turbine main oil pump, its characterized in that includes main oil pump casing (1), its bottom be formed with respectively with inside communicating oil inlet and oil-out, its inside impeller (4) of installing through a pair of floating ring (2), the front side of impeller (4) is connected with pump shaft (8) of perpendicular to impeller (4), impeller (4) are sealed through end cover (9), establish oil seal ring (7) in end cover (9), oil seal ring (7) seal in the circumference of pump shaft (8).
2. Turbine main oil pump according to claim 1, characterized in that the impeller (4) is connected to one end of the pump shaft (8) by means of a screw plug (3) and a fixed key (5).
3. Turbine main oil pump according to claim 1, characterized in that two floating rings (2) are mounted on the front and rear sides of the impeller (4), respectively, and a floating gap is ensured by means of a positioning pin (10).
4. Turbine main oil pump according to claim 1, characterized in that the end cover (9) is fixed to the front end of the main oil pump housing (1) by means of bolts (6).
5. The turbine main oil pump according to claim 1, characterized in that the main oil pump housing (1) comprises an upper cover and a base which are fastened to each other by bolts, and the relative positions of the upper cover and the base form an inner cavity for accommodating the rotation of the impeller (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921971 | 2020-09-04 | ||
| CN2020219219717 | 2020-09-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464439U true CN214464439U (en) | 2021-10-22 |
Family
ID=78192037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023118928.XU Expired - Fee Related CN214464439U (en) | 2020-09-04 | 2020-12-22 | Main oil pump of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464439U (en) |
-
2020
- 2020-12-22 CN CN202023118928.XU patent/CN214464439U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211022 Termination date: 20211222 |