CN100501178C - Large-sized turbine generator bush and method for machining bore of bush - Google Patents
Large-sized turbine generator bush and method for machining bore of bush Download PDFInfo
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- CN100501178C CN100501178C CNB2007100385682A CN200710038568A CN100501178C CN 100501178 C CN100501178 C CN 100501178C CN B2007100385682 A CNB2007100385682 A CN B2007100385682A CN 200710038568 A CN200710038568 A CN 200710038568A CN 100501178 C CN100501178 C CN 100501178C
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- chopped wood
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Abstract
The invention discloses a large size turbo generator bush and a bore processing method, wherein the bore of the upper and the lower bush has an eccentric circle with the diameter a, the center distance of the inner semicircle of the upper bush has a distance delta from the joint surface, the center distance of the inner semicircle of the lower bush has a distance eta from the joint surface. The center of the oil wedge is arranged on the joint surface of the lower bush and the superficial diameter is b. The bore process of the bush has the following steps: processing the base level of the upper and the lower bush; revising the verticality of the joint surface of the upper and the lower bushes and the base level; assembling the upper and the lower bushes, using the center of the joint surface as the centre of a circle and processing the inner bore of the bush with the diameter b; disconnecting the upper and the lower bushes, underlaying a pad with the thickness delta plus eta between the joint surface, then assembling the upper and the lower bushes; finding out the symmetric center O, then adjusting the eccentricity and finding our the processing center O', at last processing the bush inner circle with the center O' as the processing center.
Description
Technical field
The present invention relates to a kind of processing method of generator bearing shell, be specifically related to a kind of method for machining bore of steam turbine generator bearing shell.
Technical background
390KW combustion steam turbine generator is the heavy combustion of the F level steam turbine generator that has world today's state-of-the-art technology, F level combustion machine GTCC combined cycle system carbon dioxide discharge amount is about 42% of coal-burning power plant under same generated energy, discharged nitrous oxides is then less than 20% of coal-burning power plant, the discharging of sulfur dioxide gas and lime-ash is equivalent to 1%～3% of the coal-fired unit of identical generated energy, water consumption is equivalent to 33% of the coal-fired unit of identical generated energy, area of mill site is equivalent to 54% of the coal-fired unit of identical generated energy, therefore it has pollution less, the characteristics that resource consumption is few, help environmental protection, it is flexible also to have the method for operation simultaneously, start-stop speed is fast, is fit to the advantage of peaking operation.But 390KW combustion steam turbine generator is 600mm with the spherical diameter of bearing shell, width is 380mm, endoporus is similar oval structure, the bearing shell interior circle of slit bamboo or chopped wood up and down all is an eccentric circle, and the interior round heart of upper and lower two slit bamboo or chopped woods has certain distance apart from the joint close face not on the joint close face, and the eccentric distance difference of upper and lower two slit bamboo or chopped wood bearing shells, following slit bamboo or chopped wood bearing shell oil film wedge is made up of the arc section of different-diameter, and required precision is very high, and the bearing shell structure is quite compact.In the prior art, with the processing separately respectively of upper and lower two slit bamboo or chopped wood bearing shells, need like this with the processing of special car mould, the car mould must have very high precision could guarantee eccentricity value, the bearing shell clamping is fixing again also has than mistake, degree of symmetry and perpendicularity requirement to joint close face and reference level are high, and therefore how processing the bearing shell endoporus becomes the problem that the Professional visitors concentrates on studies.
Summary of the invention
The objective of the invention is to is to overcome the deficiencies in the prior art, provide a kind of with on the bearing shell, two slit bamboo or chopped woods combine the method for machining bore of the steam turbine generator bearing shell of processing down, therefore improved the processing effect and realized that the technological scheme of above-mentioned purpose is: a kind of spherical bearing shell of large turbo-type generator, comprise that the slit bamboo or chopped wood bearing shell reaches slit bamboo or chopped wood bearing shell down, internal surface central authorities at following slit bamboo or chopped wood bearing shell are provided with the circular arc oil film wedge, described upward slit bamboo or chopped wood bearing shell reaches down, and the endoporus of slit bamboo or chopped wood bearing shell is the eccentric circle that diameter is a, the described interior semicircle distance of center circle clutch seam face of going up the slit bamboo or chopped wood bearing shell is δ, the described interior semicircle distance of center circle clutch seam face of slit bamboo or chopped wood bearing shell down is η, the center of circle of described oil film wedge is positioned on the joint close face of following slit bamboo or chopped wood bearing shell, and its surface diameter is b, and arc length is d, wherein, a〉b, η〉δ, a-b〉η, η〉(a-b)/2.
The method for machining bore of the spherical bearing shell of above-mentioned large turbo-type generator comprises the following steps:
Step 4, will go up earlier the slit bamboo or chopped wood bearing shell and down the slit bamboo or chopped wood bearing shell take apart, between their joint close face, be encased inside the pad that a thickness is ε, will go up again the slit bamboo or chopped wood bearing shell and down slit bamboo or chopped wood bearing shell dress close ε=δ+η;
Step 5 is found out symmetry center o earlier, then adjusts the eccentric machining center o ' that also finds, and is that circle processing in the bearing shell of diameter a is done in the center of circle with this machining center o ' then, processes as the last slit bamboo or chopped wood bearing shell and the endoporus circular arc of slit bamboo or chopped wood bearing shell down with this.
The method for machining bore of the spherical bearing shell of above-mentioned large turbo-type generator, wherein, described symmetry center o is μ to the distance of machining center o ', μ=(η+δ)/2-δ.
The method for machining bore of the spherical bearing shell of above-mentioned large turbo-type generator, wherein, the tolerance of circle is GB H7 in the described bearing shell.
Owing to adopted the method for machining bore of steam turbine generator bearing shell of the present invention, not only can adopt common vertical lathe to carry out large batch of bearing shell endoporus processing, and upper and lower two slit bamboo or chopped woods of bearing shell are combined processing, therefore than the single slit bamboo or chopped wood bearing shell of the time processing effect that is doubled, also greatly reduce simultaneously because of process separately bearing shell to junction plane to degree and perpendicularity requirement.
Description of drawings
Fig. 1 is a structural representation of going up the slit bamboo or chopped wood bearing shell in the spherical bearing shell of a kind of large turbo-type generator of the present invention;
Fig. 2 is the structural representation of slit bamboo or chopped wood bearing shell down in the spherical bearing shell of a kind of large turbo-type generator of the present invention;
Fig. 3 is an execution in step view for the moment in the spherical bearing shell method for machining bore of a kind of large turbo-type generator of the present invention;
Fig. 4 is the view during execution in step three in the spherical bearing shell method for machining bore of a kind of large turbo-type generator of the present invention;
Fig. 5 is the view during execution in step four in the spherical bearing shell method for machining bore of a kind of large turbo-type generator of the present invention;
Fig. 6 is the view during execution in step five in the spherical bearing shell method for machining bore of a kind of large turbo-type generator of the present invention.
Embodiment
See also Fig. 1 and Fig. 2, the spherical bearing shell of a kind of large turbo-type generator of the present invention, comprise that slit bamboo or chopped wood bearing shell 1 reaches slit bamboo or chopped wood bearing shell 2 down, internal surface central authorities at following slit bamboo or chopped wood bearing shell 2 are provided with circular arc oil film wedge 22, last slit bamboo or chopped wood bearing shell 1 reaches down, and the endoporus of slit bamboo or chopped wood bearing shell 2 is the eccentric circle that diameter is a, the interior semicircle distance of center circle clutch seam face 11 of last slit bamboo or chopped wood bearing shell 1 is δ, the interior semicircle distance of center circle clutch seam face 21 of following slit bamboo or chopped wood bearing shell 2 is η, and oil film wedge 22 centers of circle are positioned on the joint close face 21 of following slit bamboo or chopped wood bearing shell 2, and its surface diameter is b, arc length is d, wherein, a〉b, η〉δ, a-b〉η, η〉(a-b)/2.
See also Fig. 3 to Fig. 6 again, the method for machining bore of the spherical bearing shell of a kind of large turbo-type generator of the present invention comprises the following steps:
Step 4, will go up earlier slit bamboo or chopped wood bearing shell 1 and down slit bamboo or chopped wood bearing shell 2 take apart, be encased inside the pad 3 that a thickness is ε at their 11,21 in joint close face, ε=δ+η, will go up again slit bamboo or chopped wood bearing shell 1 and down slit bamboo or chopped wood bearing shell 2 dresses close.
Step 5 is found out symmetry center o earlier, then adjusts off-centre and finds machining center o ', symmetry center.Distance to machining center o ' is μ, and μ=(δ+η)/2-δ is that circle processing in the bearing shell of diameter a is done in the center of circle with this machining center o ' then, processes as the last slit bamboo or chopped wood bearing shell and the endoporus circular arc of slit bamboo or chopped wood bearing shell down with this.
With 950WM combustion gas steam turbine bearing shell is example, last slit bamboo or chopped wood bearing shell 1 reaches down, and the endoporus of slit bamboo or chopped wood bearing shell 2 is the eccentric circle that diameter is a=502mm, the interior semicircle distance of center circle clutch seam face 11 of last slit bamboo or chopped wood bearing shell 1 is δ=0.6mm, the interior semicircle distance of center circle clutch seam face 21 of following slit bamboo or chopped wood bearing shell 2 is η=0.92mm, the center of circle of oil film wedge 22 is positioned on the joint close face 21 of following slit bamboo or chopped wood bearing shell 2, and its surface diameter is b=500.4mm, arc length is d=262mm, thickness ε=δ+η=the 0.6+092=1.52mm of pad 3, symmetry center.Distance to machining center o ' is μ, μ=(δ+η)/2-δ=(0.6+092)/2-0.6=0.16mm.To go up slit bamboo or chopped wood bearing shell 1 earlier and following slit bamboo or chopped wood bearing shell 2 dresses close, be the center of circle and the endoporus of processing bearing shell with diameter b=500.4mm of oil film wedge 22 with their center of joint close face; Then will go up slit bamboo or chopped wood bearing shell 1 and down slit bamboo or chopped wood bearing shell 2 take apart, be encased inside the pad 3 that a thickness is ε=1.52mm at their 11,21 in joint close face, will go up again slit bamboo or chopped wood bearing shell 1 and down slit bamboo or chopped wood bearing shell 2 dresses close; Find out symmetry center o then, then adjust off-centre and find machining center o ', symmetry center o is μ=0.16mm to the distance of machining center o ', be that circle processing in the bearing shell of diameter a=502mm is done in the center of circle with this machining center o ' then, process the endoporus circular arc that reaches following slit bamboo or chopped wood bearing shell as last slit bamboo or chopped wood bearing shell with this, so far the arc length between the intersection point of the circular arc of a=502mm and b=500.4mm circular arc just in time is d=262mm.
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique, under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technological schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (4)
1. the spherical bearing shell of a large turbo-type generator, comprise that the slit bamboo or chopped wood bearing shell reaches slit bamboo or chopped wood bearing shell down, internal surface central authorities at following slit bamboo or chopped wood bearing shell are provided with the circular arc oil film wedge, it is characterized in that, described upward slit bamboo or chopped wood bearing shell reaches down, and the endoporus of slit bamboo or chopped wood bearing shell is the eccentric circle that diameter is a, the described interior semicircle distance of center circle clutch seam face of going up the slit bamboo or chopped wood bearing shell is δ, the interior semicircle distance of center circle clutch seam face of described following slit bamboo or chopped wood bearing shell is η, and the center of circle of described oil film wedge is positioned on the joint close face of following slit bamboo or chopped wood bearing shell, and its surface diameter is b, arc length is d, wherein, a〉b, η〉δ, a-b〉η, η〉(a-b)/2.
2. the method for machining bore of the spherical bearing shell of large turbo-type generator comprises the following steps:
Step 1, an end face of slit bamboo or chopped wood bearing shell was the reference level of Vehicle Processing under the slit bamboo or chopped wood bearing shell reached in the processing, and carried out half finish turning;
Step 2, the joint close face of slit bamboo or chopped wood bearing shell and the perpendicularity of reference level under the slit bamboo or chopped wood bearing shell reaches in the correction;
Step 3, will go up the slit bamboo or chopped wood bearing shell and down slit bamboo or chopped wood bearing shell dress close, be the center of circle and with their center of joint close face with the endoporus of the diameter b processing bearing shell of oil film wedge;
Step 4, will go up earlier the slit bamboo or chopped wood bearing shell and down the slit bamboo or chopped wood bearing shell take apart, between their joint close face, be encased inside the pad that a thickness is ε, will go up again the slit bamboo or chopped wood bearing shell and down slit bamboo or chopped wood bearing shell dress close ε=δ+η;
Step 5 is found out symmetry center o earlier, then adjusts the eccentric machining center o ' that also finds, and is that circle processing in the bearing shell of diameter a is done in the center of circle with this machining center o ' then, processes as the last slit bamboo or chopped wood bearing shell and the endoporus circular arc of slit bamboo or chopped wood bearing shell down with this.
3. the method for machining bore of the spherical bearing shell of large turbo-type generator according to claim 2 is characterized in that described symmetry center.Distance to machining center o ' is μ, μ=(η+δ)/2-δ.
4. the method for machining bore of the spherical bearing shell of large turbo-type generator according to claim 2 is characterized in that the tolerance of circle is GB H7 in the described bearing shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100385682A CN100501178C (en) | 2007-03-28 | 2007-03-28 | Large-sized turbine generator bush and method for machining bore of bush |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100385682A CN100501178C (en) | 2007-03-28 | 2007-03-28 | Large-sized turbine generator bush and method for machining bore of bush |
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| Publication Number | Publication Date |
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| CN101275604A CN101275604A (en) | 2008-10-01 |
| CN100501178C true CN100501178C (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100385682A Active CN100501178C (en) | 2007-03-28 | 2007-03-28 | Large-sized turbine generator bush and method for machining bore of bush |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059515B (en) * | 2010-11-24 | 2012-05-02 | 哈尔滨汽轮机厂有限责任公司 | Method for machining sealing tile |
| CN102152074B (en) * | 2011-03-14 | 2013-03-20 | 沈阳飞机工业（集团）有限公司 | Processing method of seamless joint of aluminum alloy |
| CN102717232B (en) * | 2012-05-31 | 2014-05-28 | 中信重工机械股份有限公司 | Manufacturing method for half liner in head sheave of large-sized elevator |
| CN105422628B (en) * | 2015-11-23 | 2018-08-14 | 中国舰船研究设计中心 | A kind of novel water lubricating rubber stern bearing |
| CN109185334B (en) * | 2018-10-16 | 2019-12-13 | 燕山大学 | inlaid self-lubricating joint bearing with compensable lubricating material |
| CN109604956B (en) * | 2018-12-15 | 2020-11-24 | 烟台大丰轴瓦有限责任公司 | High-precision bearing bush machining method without manual control |
| CN110594287A (en) * | 2019-09-17 | 2019-12-20 | 福建福清核电有限公司 | Main pump integrated three-liquid-tank radial water guide bearing bush |
| CN114406629B (en) * | 2022-01-19 | 2023-06-27 | 武汉船用机械有限责任公司 | Processing method of spherical bearing bush mechanism |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2359634A1 (en) * | 1973-11-30 | 1975-06-05 | Glyco Metall Werke | Crank connecting rod split bearing - has bush half with greater radius set on the side with greater loading |
| DE4205493C1 (en) * | 1992-02-22 | 1993-06-24 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Crankshaft bearing with axial damping for IC engine - has non elastic shells between bearing shells and housing to accommodate axial movements |
| CN2372461Y (en) * | 1999-01-08 | 2000-04-05 | 刘立苹 | Engine with eccentric axle bush |
-
2007
- 2007-03-28 CN CNB2007100385682A patent/CN100501178C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2359634A1 (en) * | 1973-11-30 | 1975-06-05 | Glyco Metall Werke | Crank connecting rod split bearing - has bush half with greater radius set on the side with greater loading |
| DE4205493C1 (en) * | 1992-02-22 | 1993-06-24 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Crankshaft bearing with axial damping for IC engine - has non elastic shells between bearing shells and housing to accommodate axial movements |
| CN2372461Y (en) * | 1999-01-08 | 2000-04-05 | 刘立苹 | Engine with eccentric axle bush |
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| CN101275604A (en) | 2008-10-01 |
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