CN202612394U - Elliptical bearing for high-speed dynamic balance technology of steam turbine - Google Patents
Elliptical bearing for high-speed dynamic balance technology of steam turbine Download PDFInfo
- Publication number
- CN202612394U CN202612394U CN 201220305520 CN201220305520U CN202612394U CN 202612394 U CN202612394 U CN 202612394U CN 201220305520 CN201220305520 CN 201220305520 CN 201220305520 U CN201220305520 U CN 201220305520U CN 202612394 U CN202612394 U CN 202612394U
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- bearing
- neva
- bushing
- inner bushing
- outer watt
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Abstract
The utility model relates to a bearing for high-speed dynamic balance of a steam turbine, and provides an elliptical bearing for the high-speed dynamic balance technology of a steam turbine, which solves the problems that the bearing of the prior art is provided with no circumferential groove, the oil film rigidity is poor, the cooling effect is poor, self-excited vibration is easily caused during the dynamic balance, the processing manufacture period is long, the cost is high, and the universality is poor. A bearing inner bushing consists of an upper half bearing inner bushing and a lower half bearing inner bushing; a bearing outer bushing consists of an upper half bearing outer bushing and a lower half bearing outer bushing; a stop pin for preventing the inner bushing from rotating relative to the outer bushing is arranged between the bearing inner bushing and the bearing outer bushing; two circumferential grooves are arranged in the inner surface of the upper half bearing inner bushing; an inner bushing oil inlet is arranged on the upper half bearing inner bushing; a fan-shaped oil chamber is arranged on the lateral inner wall of the bearing inner bushing; and oil retainers are arranged on the inner walls at the two ends of the bearing inner bushing respectively. Through the adoption of the two-body type bearing, as for the bearing inner bushing, only rotors of different types are required to be replaced, the inner bushing is smaller in size, the processing period is far shorter than that of the integral type bearing, and the processing cost is far lower than that of the integral type bearing.
Description
Technical field
The utility model relates to a kind of dynamically balanced bearing of steam turbine high speed that is used for.
Background technique
Traditional steam turbine high speed dynamic balancing all is the integrated type circular journal bearing with the technology bearing, and filler opening all near following watt of split, can only form an oil film wedge, and unstability takes place easily, causes vibration, for the turbine rotor of high speed light loading, and the non-constant of its oil film rigidity.And first does not have peripheral groove bearing, and the heat that produces in the selection course can not in time be taken away, and cooling effect is bad.This in addition types of bearings also lacks versatility, and the process-cycle is long, and the manufacturing expense is high.
The model utility content
The utility model does not have peripheral groove in order to solve existing technology bearing; Oil film rigidity is poor, and cooling effect is not good, and self-excited vibration takes place in the dynamic balancing process easily; The manufacturing cycle, long expense was high; The problem that versatility is bad, in order to overcome the above-mentioned deficiency that existing technology exists, the utility model provides a kind of steam turbine high speed dynamic balancing technics to use elliptic bearing.
The utility model is to solve the problems of the technologies described above the technological scheme of taking to be:
The described steam turbine high speed dynamic balancing technics of the utility model comprises outer watt of bearing Neva and bearing with elliptic bearing; Second connects and composes through the Neva locating stud bearing Neva by half-sum bearing Neva on the bearing Neva; Outer watt of bearing is gone up outer watt of half-sum bearing by outer watt of bearing, and second tightens together through fastening screw trip bolt and constitutes; The position structure that the outer watt inner circumferential surface of position structure that bearing Neva external peripheral surface is provided with and bearing is provided with cooperatively interacts and realizes the assembling of outer watt of bearing Neva and bearing, is provided with between outer watt of bearing Neva and the bearing and prevents the stop pin of Neva with respect to outer watt of rotation; First internal surface of bearing Neva is provided with two peripheral grooves, and first is provided with the Neva filler opening bearing Neva, and the side inwall of bearing Neva is provided with fan-shaped grease chamber, on the two ends inwall of bearing Neva flinger ring is arranged respectively.
The beneficial effect of the utility model is:
The filler opening of bearing shell be positioned at bearing first, increased filler opening size and grease chamber's area, improved lubrication effect, first has two peripheral grooves Neva, makes cooling effect better, simultaneously can increase damping, suppresses the self-excited vibration of bearing shell.The both sides of bearing shell all have fan-shaped grease chamber, and the grease chamber of a side links to each other with filler opening, and bearing carries flinger ring.The double-body bike design bearing for dissimilar rotors, only needs to change the bearing Neva, and the Neva size is less, and process-cycle and processing cost are well below solid box.
Description of drawings
Fig. 1 is the plan view (sectional drawing) of the utility model, and Fig. 2 is the left view (sectional drawing) of Fig. 1; Among the figure: 1-Neva, outer watt of 2-, 3-fastening screw trip bolt, 4-Neva locating stud, 5-Neva filler opening, first peripheral groove of 6-Neva, the fan-shaped grease chamber of 7-, 8-flinger ring, 9-oil nozzle, 10-stop pin.
Embodiment
Embodiment one: shown in Fig. 1～2, the described a kind of steam turbine high speed dynamic balancing technics of this mode of execution comprises outer watt 2 on bearing Neva 1 and bearing with elliptic bearing; Bearing Neva 1 is connected and composed through Neva locating stud 4 by first 1-1 of bearing Neva and second 1-2 of bearing Neva; Outer watt 2 on bearing by outer watt first 2-1 of bearing and bearing outward watt second 2-2 tighten together through fastening screw trip bolt 3 and constitute; The outer watt position structure that 2 inner circumferential surfaces are provided with of position structure that bearing Neva 1 external peripheral surface is provided with and bearing cooperatively interacts and realizes the assembling of outer watt 2 on bearing Neva 1 and bearing, is provided with between outer watt 2 on bearing Neva 1 and the bearing and prevents the stop pin 10 of Neva with respect to outer watt of rotation; The internal surface of first 1-1 of bearing Neva is provided with two peripheral grooves 6, and first 1-1 of bearing Neva is provided with Neva filler opening 5, and the side inwall of bearing Neva 1 is provided with fan-shaped grease chamber 7, on the two ends inwall of bearing Neva 1 flinger ring 8 is arranged respectively.The cross section of the endoporus of bearing Neva 1 is oval.
Embodiment two: shown in Fig. 1～2; It is annular groove 11 that said bearing Neva 1 external peripheral surface of this mode of execution is provided with position structure; The outer watt position structure that 2 inner circumferential surfaces are provided with of said bearing is an annular boss 12, annular groove 11 and annular boss 12 mutual plug-in formation position structures.Other composition and annexation are identical with embodiment one.
The steam turbine high speed dynamic balancing technics is used elliptic bearing, comprise the bearing Neva first, the bearing Neva second; Outer watt of bearing first, outer watt of bearing second, circumferential oil groove; Fan-shaped grease chamber, oil nozzles etc. are gone up second Neva and are connected together through locating stud and attachment screw; Neva has locating stud to prevent Neva with respect to outer watt of rotation through localization part and outer watt of assembling, pass through then attachment screw with outer watt tightly.Steam turbine high speed dynamic balancing technics bearing of the present invention comprises outer watt, Neva, fastening screw trip bolt, locating stud, filler opening, peripheral groove, fan-shaped grease chamber, flinger ring, oil nozzle, stop pin etc.Outer watt of bearing is connected with bearing support, belongs to the switching part between Neva and the bearing support, and Neva is connected with outer watt with stop pin through seam, finally through the fastening screw trip bolt handle tightly.Because the journal size of different rotor is inconsistent, the size of Neva can be changed according to the journal size of rotor at any time.
Claims (2)
1. a steam turbine high speed dynamic balancing technics is used elliptic bearing, it is characterized in that; Said elliptic bearing comprises bearing Neva (1) and bearing outer watt (2); Bearing Neva (1) is connected and composed through Neva locating stud (4) by bearing Neva first (1-1) and bearing Neva second (1-2); Bearing outer watt (2) by bearing outer watt first (2-1) and bearing outward watt second (2-2) through fastening screw trip bolt (3) formation that tightens together; The outer watt position structure that (2) inner circumferential surface is provided with of position structure that bearing Neva (1) external peripheral surface is provided with and bearing cooperatively interacts and realizes the assembling of bearing Neva (1) and bearing outer watt (2), is provided with between bearing Neva (1) and the bearing outer watt (2) and prevents the stop pin (10) of Neva with respect to outer watt of rotation; The internal surface of bearing Neva first (1-1) is provided with two peripheral grooves (6), and bearing Neva first (1-1) is provided with Neva filler opening (5), and the side inwall of bearing Neva (1) is provided with fan-shaped grease chamber (7), and flinger ring (8) is respectively arranged on the two ends inwall of bearing Neva (1).
2. a kind of steam turbine high speed dynamic balancing technics according to claim 1 is used elliptic bearing, it is characterized in that; It is annular groove (11) that said bearing Neva (1) external peripheral surface is provided with position structure; The outer watt position structure that (2) inner circumferential surface is provided with of said bearing is annular boss (12), annular groove (11) and the mutual plug-in formation position structure of annular boss (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220305520 CN202612394U (en) | 2012-06-28 | 2012-06-28 | Elliptical bearing for high-speed dynamic balance technology of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220305520 CN202612394U (en) | 2012-06-28 | 2012-06-28 | Elliptical bearing for high-speed dynamic balance technology of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612394U true CN202612394U (en) | 2012-12-19 |
Family
ID=47346096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220305520 Expired - Fee Related CN202612394U (en) | 2012-06-28 | 2012-06-28 | Elliptical bearing for high-speed dynamic balance technology of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612394U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748389A (en) * | 2012-06-28 | 2012-10-24 | 哈尔滨汽轮机厂有限责任公司 | Elliptical bearing for steam turbine high-speed dynamic balance technology |
| CN106523535A (en) * | 2016-11-29 | 2017-03-22 | 东方电气集团东方汽轮机有限公司 | Elliptic bearing capable of being subjected to forced cooling |
| CN113983069A (en) * | 2021-11-11 | 2022-01-28 | 中国船舶重工集团公司第七0三研究所 | High-speed heavy-load low-power-consumption dislocation molded line sliding support bearing |
-
2012
- 2012-06-28 CN CN 201220305520 patent/CN202612394U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748389A (en) * | 2012-06-28 | 2012-10-24 | 哈尔滨汽轮机厂有限责任公司 | Elliptical bearing for steam turbine high-speed dynamic balance technology |
| CN106523535A (en) * | 2016-11-29 | 2017-03-22 | 东方电气集团东方汽轮机有限公司 | Elliptic bearing capable of being subjected to forced cooling |
| CN113983069A (en) * | 2021-11-11 | 2022-01-28 | 中国船舶重工集团公司第七0三研究所 | High-speed heavy-load low-power-consumption dislocation molded line sliding support bearing |
| CN113983069B (en) * | 2021-11-11 | 2024-04-09 | 中国船舶重工集团公司第七0三研究所 | High-speed heavy-load low-power consumption dislocation molded line sliding support bearing |
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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: 20121219 Termination date: 20150628 |
|
| EXPY | Termination of patent right or utility model |