CN102748389A - Elliptical bearing for steam turbine high-speed dynamic balance technology - Google Patents
Elliptical bearing for steam turbine high-speed dynamic balance technology Download PDFInfo
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- CN102748389A CN102748389A CN201210216035XA CN201210216035A CN102748389A CN 102748389 A CN102748389 A CN 102748389A CN 201210216035X A CN201210216035X A CN 201210216035XA CN 201210216035 A CN201210216035 A CN 201210216035A CN 102748389 A CN102748389 A CN 102748389A
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- bearing
- neva
- bushing
- steam turbine
- inner bushing
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Abstract
The invention discloses an elliptical bearing for a steam turbine high-speed dynamic balance technology and relates to a bearing for steam turbine high-speed dynamic balance. The elliptical bearing for a steam turbine high-speed dynamic balance technology solves the problems that a bearing produced by the existing technology does not comprise a circumferential groove, has poor oil film rigidity and poor cooling effects, can easily produce self-excited vibration in a dynamic balance process, and has a long processing period, a high cost and poor versatility. A bearing inner bushing comprises an upper half of the bearing inner bushing and a lower half of the bearing inner bushing. A bearing outer bushing comprises an upper half of the bearing outer bushing and a lower half of the bearing outer bushing. Stop pins are arranged between the bearing inner bushing and the bearing outer bushing and are used for preventing relative rotation between the bearing inner bushing and the bearing outer bushing. An inner surface of the upper half of the bearing inner bushing is provided with two circumferential grooves. The upper half of the bearing inner bushing is provided with an inner bushing oil inlet. A side inner wall of the bearing inner bushing is provided with a fan-shaped oil chamber. Inner walls of two ends of the bearing inner bushing are provided with oil baffle rings. The elliptical bearing for a steam turbine high-speed dynamic balance technology has the advantages that a two-section bearing design is adopted and aiming at different types of rotors, only the bearing inner bushing needs to be replaced and because of a small size of the bearing inner bushing, a processing period and a processing cost are greatly lower than those of an integrated bearing.
Description
Technical field
The present invention 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.
Summary of the invention
The present invention 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 invention provides a kind of steam turbine high speed dynamic balancing technics and uses elliptic bearing.
The present invention solves the problems of the technologies described above the technological scheme of taking to be:
Steam turbine high speed dynamic balancing technics of the present invention 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 invention has the beneficial effects as follows:
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 plan view of the present invention (sectional drawing), 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 |
|---|---|---|---|
| CN201210216035XA CN102748389A (en) | 2012-06-28 | 2012-06-28 | Elliptical bearing for steam turbine high-speed dynamic balance technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210216035XA CN102748389A (en) | 2012-06-28 | 2012-06-28 | Elliptical bearing for steam turbine high-speed dynamic balance technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748389A true CN102748389A (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210216035XA Pending CN102748389A (en) | 2012-06-28 | 2012-06-28 | Elliptical bearing for steam turbine high-speed dynamic balance technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422626A (en) * | 2015-12-17 | 2016-03-23 | 天津华北集团铜业有限公司 | Flying shear copper sleeve convenient to dismount |
| CN109386614A (en) * | 2018-10-18 | 2019-02-26 | 华电电力科学研究院有限公司 | A kind of steam turbine oil scraper ring and its application method |
| CN110159762A (en) * | 2019-04-25 | 2019-08-23 | 沈阳透平机械股份有限公司 | A kind of high speed balancing machine sealing structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56138515A (en) * | 1980-03-27 | 1981-10-29 | Mitsubishi Heavy Ind Ltd | Plain bearing |
| JPS57110822A (en) * | 1980-12-27 | 1982-07-09 | Toshiba Corp | Lubricant oil supplying and discharging controller for elliptical bearing |
| CN1760511A (en) * | 2005-05-27 | 2006-04-19 | 上海大学 | Method for calculating all round properties of bearing of turbo generator in large size |
| CN101216070A (en) * | 2007-12-29 | 2008-07-09 | 东方电气集团东方汽轮机有限公司 | Upper pad slotted oval-shaped bearing |
| CN101539169A (en) * | 2008-03-19 | 2009-09-23 | 株式会社日立制作所 | Journal bearing device |
| CN202612394U (en) * | 2012-06-28 | 2012-12-19 | 哈尔滨汽轮机厂有限责任公司 | Elliptical bearing for high-speed dynamic balance technology of steam turbine |
-
2012
- 2012-06-28 CN CN201210216035XA patent/CN102748389A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56138515A (en) * | 1980-03-27 | 1981-10-29 | Mitsubishi Heavy Ind Ltd | Plain bearing |
| JPS57110822A (en) * | 1980-12-27 | 1982-07-09 | Toshiba Corp | Lubricant oil supplying and discharging controller for elliptical bearing |
| CN1760511A (en) * | 2005-05-27 | 2006-04-19 | 上海大学 | Method for calculating all round properties of bearing of turbo generator in large size |
| CN101216070A (en) * | 2007-12-29 | 2008-07-09 | 东方电气集团东方汽轮机有限公司 | Upper pad slotted oval-shaped bearing |
| CN101539169A (en) * | 2008-03-19 | 2009-09-23 | 株式会社日立制作所 | Journal bearing device |
| CN202612394U (en) * | 2012-06-28 | 2012-12-19 | 哈尔滨汽轮机厂有限责任公司 | Elliptical bearing for high-speed dynamic balance technology of steam turbine |
Non-Patent Citations (1)
| Title |
|---|
| 李立波等: "60Hz汽轮机转子高速动平衡探讨", 《东方汽轮机》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422626A (en) * | 2015-12-17 | 2016-03-23 | 天津华北集团铜业有限公司 | Flying shear copper sleeve convenient to dismount |
| CN109386614A (en) * | 2018-10-18 | 2019-02-26 | 华电电力科学研究院有限公司 | A kind of steam turbine oil scraper ring and its application method |
| CN110159762A (en) * | 2019-04-25 | 2019-08-23 | 沈阳透平机械股份有限公司 | A kind of high speed balancing machine sealing structure |
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Application publication date: 20121024 |