CN204099431U - A kind of Turbo-generator Set - Google Patents
A kind of Turbo-generator Set Download PDFInfo
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- CN204099431U CN204099431U CN201420521246.9U CN201420521246U CN204099431U CN 204099431 U CN204099431 U CN 204099431U CN 201420521246 U CN201420521246 U CN 201420521246U CN 204099431 U CN204099431 U CN 204099431U
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Abstract
The utility model provides a kind of Turbo-generator Set, comprises exciter rotor and pedestal bearing; Pedestal bearing comprises the bearing support being provided with oil leab; Bearing shell, its two ends are by the first inner grease retainer sheet and the second inner grease retainer sheet and axle journal Spielpassung; Clutch shaft bearing gland and the second bearing gland, both are all with axle journal Spielpassung and clutch shaft bearing gland is provided with the first annular oil-return groove be communicated with oil leab, and the second bearing gland is provided with the second annular oil-return groove be communicated with oil leab; All being arranged on axle journal and protruding from first ring form drag stopper and the second annular stop part of journal surface, first ring form drag stopper is positioned at the first annular oil-return groove, and the second annular stop part is positioned at the second annular oil-return groove.The utility model is effectively stopped the lubricant oil splashed to bearing gland from inner grease retainer sheet and axle journal gap by annular stop part, reduces the seepage oil mass of Turbo-generator Set pedestal bearing, reduces the potential safety hazard that leakage of oil causes, ensures that power plant safety is carried out production strictly in line with rules and regulations.
Description
Technical field
The utility model relates to power generating equipment technical field, more particularly, relates to a kind of Turbo-generator Set.
Background technique
Bearing of turbo generator set leakage of oil affects the long-standing problem that power plant safety carries out production strictly in line with rules and regulations, and particularly some Pump for Medium and Small Power Generating Set pedestal bearings often occur oil seepage phenomena, there is larger potential safety hazard.
In conventional 12MW Turbo-generator Set, exciter rotor is supported by the pedestal bearing at two ends; This pedestal bearing is comprised bearing support and is fixed on the bearing shell on bearing support by Cock screw, and the axle journal Spielpassung of bearing shell and exciter rotor is rotationally connected both realizing.For eliminating pedestal bearing oil seepage phenomena, be respectively arranged with copper grease baffle between above-mentioned axle journal and bearing shell and be positioned at the bearing gland outside copper grease baffle, utilize copper grease baffle as inner grease retainer, bearing gland as outer oil catch, inner grease retainer and outer oil catch all with axle journal Spielpassung; The inner peripheral surface of above-mentioned bearing gland offers groove, and the bottom of this groove is provided with the spill port be communicated with the oil pocket of bearing support.
During unit operation, the draining part in pedestal bearing is splashed on the inner grease retainer of both sides, and under the influence of centrifugal force, oil is got rid of back in bearing chamber, gets back to fuel tank.Another part oil is then splashed on outer oil catch along the gap between inner grease retainer and axle journal, then flows back to downwards in bearing support along the spill port in outer oil catch groove.
But, still have a small amount of oil and oil gas by the outside seepage in the gap between outer oil catch and axle journal in above-mentioned pedestal bearing working procedure, cause the waste of steam turbine oil.When leakage of oil is serious, the inner grease retainer of lubricant oil through bearing shell both sides will be there is and outer oil catch outwards gets rid of oily phenomenon, cause oil leakage to enter exciter, make cable insulation aging and breakdown accident occurs, there is larger potential safety hazard, have impact on the safe and civilized production of power plant.
In sum, how to reduce the seepage oil mass of the pedestal bearing of Turbo-generator Set, to reduce the wasting of resources that leakage of oil causes, reduce the potential safety hazard that leakage of oil causes, and then ensure the safe and civilized production of power plant, be current those skilled in the art technical problems urgently to be resolved hurrily.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of Turbo-generator Set, to reduce the pedestal bearing seepage oil mass of Turbo-generator Set, thus the wasting of resources that minimizing leakage of oil causes, reduce the potential safety hazard that leakage of oil causes, and then ensure the safe and civilized production of power plant.
In order to achieve the above object, the utility model provides following technological scheme:
A kind of Turbo-generator Set, the pedestal bearing comprising exciter rotor and be rotatably assorted with the axle journal of described exciter rotor; Described pedestal bearing comprises:
Bearing support, described bearing support is provided with oil leab;
Inside be placed on described bearing support and the bearing shell be rotatably assorted with described axle journal, the two ends of described bearing shell are respectively by the first inner grease retainer sheet and the second inner grease retainer sheet and described axle journal Spielpassung;
Be connected with described bearing support and lay respectively at clutch shaft bearing gland and second bearing gland of described bearing shell both sides, both all with described axle journal Spielpassung, and the inner peripheral surface of described clutch shaft bearing gland offers the first annular oil-return groove be communicated with described oil leab, the inner peripheral surface of described second bearing gland offers the second annular oil-return groove be communicated with described oil leab;
Also comprise:
All being arranged on described axle journal and protruding from first ring form drag stopper and the second annular stop part of described journal surface, described first ring form drag stopper is positioned at described first annular oil-return groove, and described second annular stop part is positioned at described second annular oil-return groove.
Preferably, in above-mentioned Turbo-generator Set, the height that described first ring form drag stopper and described second annular stop part give prominence to described journal surface is 2.5mm-3.5mm.
Preferably, in above-mentioned Turbo-generator Set, described first ring form drag stopper is an O RunddichtringO, and described second annular stop part is the 2nd O RunddichtringO.
Preferably, in above-mentioned Turbo-generator Set, described axle journal offers respectively the first groove and the second groove, a described O RunddichtringO is arranged in described first groove, and described 2nd O RunddichtringO is arranged in described second groove.
Preferably, in above-mentioned Turbo-generator Set, described first groove and described second groove are semi-circular grooves.
Preferably, in above-mentioned Turbo-generator Set, the diameter of described axle journal is 80mm, and the O of a described O RunddichtringO and described 2nd O RunddichtringO circle internal diameter is 65mm, and O astragal footpath is 4mm.
Preferably, in above-mentioned Turbo-generator Set, a described O RunddichtringO and described 2nd O RunddichtringO are synthesis oil-resistant rubber ring.
Preferably, in above-mentioned Turbo-generator Set, described first annular oil-return groove is communicated with described oil leab by the first spill port, and described first spill port is arranged on the bottom of described first annular oil-return groove; Described second annular oil-return groove is communicated with described oil leab by the second spill port, and described second spill port is arranged on the bottom of described second annular oil-return groove.
Preferably, in above-mentioned Turbo-generator Set, described first inner grease retainer sheet and described second inner grease retainer sheet are copper catch.
As can be seen from above-mentioned technological scheme, the pedestal bearing that the Turbo-generator Set that the utility model provides comprises exciter rotor and is rotatably assorted with the axle journal of exciter rotor; Pedestal bearing comprises bearing support, bearing shell, the first inner grease retainer sheet, the second inner grease retainer sheet, clutch shaft bearing gland, the second bearing gland, first ring form drag stopper and the second annular stop part; Wherein, bearing support is provided with oil leab; Be placed on bearing support in bearing shell and be rotatably assorted with axle journal, the two ends of bearing shell are respectively by the first inner grease retainer sheet and the second inner grease retainer sheet and axle journal Spielpassung; Clutch shaft bearing gland and the second bearing gland to be connected with bearing support and to lay respectively at bearing shell both sides, both all with axle journal Spielpassung, and the inner peripheral surface of clutch shaft bearing gland offers the first annular oil-return groove be communicated with oil leab, the inner peripheral surface of the second bearing gland offers the second annular oil-return groove be communicated with oil leab; First ring form drag stopper and the second annular stop part to be all arranged on axle journal and to protrude from journal surface, and first ring form drag stopper is positioned at the first annular oil-return groove, and the second annular stop part is positioned at the second annular oil-return groove.
When Turbo-generator Set of the present utility model is run, after turbo-engine lube enters bearing shell and axle journal, a part of lubricant oil enters bearing chamber through oil-discharge trough bottom oil drainage hole and is back to fuel tank; Another part oil and oil gas then side are splashed to first ring form drag stopper place along the radial clearance of axle journal and the first inner grease retainer sheet, by the stop of first ring form drag stopper, under the influence of centrifugal force, oil by get rid of back clutch shaft bearing gland the first annular oil-return groove in, flow to the oil leab of bearing support along the spill port in the first annular oil-return groove, get back in fuel tank; Opposite side is splashed to the second annular stop part place along the radial clearance of axle journal and the second inner grease retainer sheet, by the stop of the second annular stop part, under the influence of centrifugal force, oil by get rid of back the second bearing gland the second annular oil-return groove in, flow to the oil leab of bearing support along the spill port in the second annular oil-return groove, get back in fuel tank.
In summary, the utility model has carried out effectively stopping to the lubricant oil that bearing gland splashes to from inner grease retainer sheet and axle journal gap by two annular stop parts, prevent the lubricant oil in bearing along the outside seepage of bearing gland well, so decrease the seepage oil mass of the pedestal bearing of Turbo-generator Set, thus decrease the wasting of resources that leakage of oil causes, reduce the potential safety hazard that leakage of oil causes, thus ensure that the safe and civilized production of power plant, efficiently solve current Small Turbine group pedestal bearing leakage of oil problem.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the Turbo-generator Set that the utility model embodiment provides.
Embodiment
The utility model embodiment provides a kind of Turbo-generator Set, decrease the pedestal bearing seepage oil mass of Turbo-generator Set, thus decrease the wasting of resources that leakage of oil causes, reduce the potential safety hazard that leakage of oil causes, and then ensure that the safe and civilized production of power plant.
For making the object of the utility model embodiment, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to accompanying drawing 1, the pedestal bearing that the Turbo-generator Set that the utility model embodiment provides comprises exciter rotor 5 and is rotatably assorted with the axle journal of exciter rotor 5; Pedestal bearing comprises bearing support 1, bearing shell 6, first inner grease retainer sheet 4, second inner grease retainer sheet 7, clutch shaft bearing gland 2, second bearing gland 9, first ring form drag stopper and the second annular stop part; Wherein, bearing support 1 is provided with oil leab; Be placed on bearing support 1 in bearing shell 6 and be rotatably assorted with axle journal, the two ends of bearing shell 6 are respectively by the first inner grease retainer sheet 4 and the second inner grease retainer sheet 7 and axle journal Spielpassung; Clutch shaft bearing gland 2 and the second bearing gland 9 to be connected with bearing support 1 and to lay respectively at bearing shell 6 both sides, both all with axle journal Spielpassung, and the inner peripheral surface inner peripheral surface of clutch shaft bearing gland 2 offering the first annular oil-return groove 21, second bearing gland 9 be communicated with oil leab offers the second annular oil-return groove 91 be communicated with oil leab; First ring form drag stopper and the second annular stop part to be all arranged on axle journal and to protrude from journal surface, and first ring form drag stopper is positioned at the annular stop part of the first annular oil-return groove 21, second and is positioned at the second annular oil-return groove 91.
When Turbo-generator Set of the present utility model is run, after turbo-engine lube enters bearing shell 6 and axle journal, a part of lubricant oil enters bearing chamber through oil-discharge trough bottom oil drainage hole and is back to fuel tank; Another part oil and oil gas then side are splashed to first ring form drag stopper place along the radial clearance of axle journal and the first inner grease retainer sheet 4, by the stop of first ring form drag stopper, under the influence of centrifugal force, oil by get rid of back clutch shaft bearing gland 2 the first annular oil-return groove 21 in, flow to the oil leab of bearing support 1 along the spill port in the first annular oil-return groove 21, get back in fuel tank; Opposite side is splashed to the second annular stop part place along the radial clearance of axle journal and the second inner grease retainer sheet 7, by the stop of the second annular stop part, under the influence of centrifugal force, oil by get rid of back the second bearing gland 9 the second annular oil-return groove 91 in, flow to the oil leab of bearing support 1 along the spill port in the second annular oil-return groove 91, get back in fuel tank.
In summary, the utility model has carried out effectively stopping to the lubricant oil that bearing gland splashes to from inner grease retainer sheet and axle journal gap by two annular stop parts, prevent the lubricant oil in bearing along the outside seepage of bearing gland well, so decrease the seepage oil mass of the pedestal bearing of Turbo-generator Set, thus decrease the wasting of resources that leakage of oil causes, reduce the potential safety hazard that leakage of oil causes, thus ensure that the safe and civilized production of power plant, efficiently solve current Small Turbine group pedestal bearing leakage of oil problem.
Axle journal for the ease of exciter rotor 5 is assembled in pedestal bearing, and in the Turbo-generator Set that above-described embodiment provides, the height that first ring form drag stopper and the second annular stop part give prominence to journal surface is 2.5mm-3.5mm.Now, the radial thickness that two annular stop parts give prominence to journal surface is the arbitrary numerical value within the scope of 2.5mm-3.5mm, can be 2.5mm, 3mm or 3.5mm, thus good blocking effect can be issued in the situation that annular stop part radial thickness is less, be convenient to be assembled in annular oil-return groove.
Further, above-mentioned first ring form drag stopper is the annular stop part of an O RunddichtringO 3, second is the 2nd O RunddichtringO 8.The utility model forms above-mentioned annular stop part by being positioned at mounting O-shaped seal ring on the axle journal between bearing gland (i.e. outer oil catch) at exciter rotor 5, utilize sealing circle to stop a small amount of oil of this part and oil gas, the oil stoping this part a small amount of and oil gas are to seepage outside bearing gland.Meanwhile, after oil gas is obstructed, condense into oil, flow back to downwards in bearing support 1 from the spill port in the annular oil-return groove of bearing gland, prevent the generation of oil seepage phenomena.
Because O RunddichtringO has good elasticity, can compressive strain be there is when assembling, thus be convenient to be assembled in the annular oil-return groove of bearing gland.Meanwhile, O RunddichtringO compact structure, easy accessibility, uses and can play seal action once enclosing, and have self-packing characteristic.It will be understood by those skilled in the art that, above-mentioned two annular stop parts are not limited to O RunddichtringO, can also by arranging the shaft shoulder or sheathed elastic steel sheet etc. as annular stop part on axle journal, to reach the effect of the lubricant oil in same stop bearing along the outside seepage of bearing gland, the present embodiment does not repeat one by one to this.
In order to ensure the steadiness of O RunddichtringO position, axle journal offers respectively the first groove and the second groove, an O RunddichtringO 3 is arranged in the first groove, and the 2nd O RunddichtringO 8 is arranged in the second groove.The utility model carries out spacing by the first groove to an O RunddichtringO 3, carries out spacing, O RunddichtringO can be prevented to be moved along the axis of axle journal, so can ensure good blocking effect by the second groove to the 2nd O RunddichtringO 8.Certainly, the utility model can not also arrange groove, makes O RunddichtringO and axle journal interference fit.
In order to coordinate with O RunddichtringO preferably, the first groove and the second groove are semi-circular grooves.Now, the shape of cross section of above-mentioned two grooves is semicircle; During installation, the inner ring of O RunddichtringO is squeezed in groove, thus utilizes the elastic force of O RunddichtringO to make it spacing in groove preferably, ensure that the steadiness of O RunddichtringO position.Interchangeable, above-mentioned first groove and the second groove can also be rectangle groove or other shapes, as long as can realize carrying out spacing to O RunddichtringO.
In the utility model one specific embodiment, the diameter of axle journal is 80mm, and the O of an O RunddichtringO 3 and the 2nd O RunddichtringO 8 circle internal diameter is 65mm, and O astragal footpath is 4mm.For existing unit, the utility model utilizes the unit outage time, and exciter rotor 5 is extracted out, and mark is carried out in the position of axle journal between bearing gland seals being used for by exciter rotor 5 coordinating with pedestal bearing; Then be placed on lathe by exciter rotor 5 and go out semi-circular grooves in mark position turning, the size of groove should meet the decrement of O RunddichtringO in groove, and working surface degree of finish should meet seal ring installation requirement.According to exciter rotor 5 journal size φ 80, select O RunddichtringO to be of a size of φ 65 × 4, then O RunddichtringO is arranged in the semi-circular grooves of axle journal, then by exciter rotor 5 installation in position, then pedestal bearing is required to install according to mounting process.Observe through the operations of nearly 6 months, all there is not oil stain in the clutch shaft bearing gland 2 of pedestal bearing and the second bearing gland 9, does not occur oil seepage phenomena.Above-mentioned O RunddichtringO oil and oil gas can play good blocking effect, thus minimizing is to seepage oil mass outside bearing gland.
Turbo-generator Set of the present utility model is convenient to transform existing unit, reduces reforming cost, can be applied in the process of Small Turbine group pedestal bearing leakage of oil.It will be appreciated by persons skilled in the art that the Turbo-generator Set for different size and different axle journals, above-mentioned O RunddichtringO can also adopt other suitable specifications, and the present embodiment is not specifically limited this.
Preferably, an O RunddichtringO 3 and the 2nd O RunddichtringO 8 are synthesis oil-resistant rubber ring.Adopt the O RunddichtringO made of synthesis oil resistant rubber, have excellent oil resistance, and heat-resisting, incompressible distortion, elongation are all fine, combination property is better, and cost is lower.Certainly, above-mentioned O RunddichtringO can also be the rubber ring of PVC＝polyvinyl chloride seal ring or other kinds.
In the utility model one specific embodiment, the first annular oil-return groove 21 is communicated with oil leab by the first spill port, and the first spill port is arranged on the bottom of the first annular oil-return groove 21; Second annular oil-return groove 91 is communicated with oil leab by the second spill port, and the second spill port is arranged on the bottom of the second annular oil-return groove 91.Spill port is arranged on the bottom of annular oil-return groove by the present embodiment, is convenient to collect leakage of oil.Certainly, oil can also be imported in oil leab by return tube by annular oil-return groove.
In order to optimize technique scheme further, the first inner grease retainer sheet 4 and the second inner grease retainer sheet 7 are copper catch.Copper catch has higher corrosion resistance, and working life is longer.Above-mentioned inner grease retainer sheet can also be stainless steel catch or the good metal catch of other corrosion resistances.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a Turbo-generator Set, the pedestal bearing comprising exciter rotor (5) and be rotatably assorted with the axle journal of described exciter rotor (5); Described pedestal bearing comprises:
Bearing support (1), (1) is provided with oil leab to described bearing support;
Inside be placed on described bearing support (1) and the bearing shell (6) be rotatably assorted with described axle journal, the two ends of described bearing shell (6) are respectively by the first inner grease retainer sheet (4) and the second inner grease retainer sheet (7) and described axle journal Spielpassung;
Be connected with described bearing support (1) and lay respectively at clutch shaft bearing gland (2) and second bearing gland (9) of described bearing shell (6) both sides, both all with described axle journal Spielpassung, and the inner peripheral surface of described clutch shaft bearing gland (2) offers the first annular oil-return groove (21) be communicated with described oil leab, the inner peripheral surface of described second bearing gland (9) offers the second annular oil-return groove (91) be communicated with described oil leab;
It is characterized in that, also comprise:
All to be arranged on described axle journal and to protrude from first ring form drag stopper and the second annular stop part of described journal surface, described first ring form drag stopper is positioned at described first annular oil-return groove (21), and described second annular stop part is positioned at described second annular oil-return groove (91).
2. Turbo-generator Set as claimed in claim 1, it is characterized in that, the height that described first ring form drag stopper and described second annular stop part give prominence to described journal surface is 2.5mm-3.5mm.
3. Turbo-generator Set as claimed in claim 1, it is characterized in that, described first ring form drag stopper is an O RunddichtringO (3), and described second annular stop part is the 2nd O RunddichtringO (8).
4. Turbo-generator Set as claimed in claim 3, it is characterized in that, described axle journal offers respectively the first groove and the second groove, a described O RunddichtringO (3) is arranged in described first groove, and described 2nd O RunddichtringO (8) is arranged in described second groove.
5. Turbo-generator Set as claimed in claim 4, it is characterized in that, described first groove and described second groove are semi-circular grooves.
6. Turbo-generator Set as claimed in claim 5, it is characterized in that, the diameter of described axle journal is 80mm, and the O of a described O RunddichtringO (3) and described 2nd O RunddichtringO (8) circle internal diameter is 65mm, and O astragal footpath is 4mm.
7. Turbo-generator Set as claimed in claim 3, it is characterized in that, a described O RunddichtringO (3) and described 2nd O RunddichtringO (8) are synthesis oil-resistant rubber ring.
8. the Turbo-generator Set as described in any one of claim 1-7, it is characterized in that, described first annular oil-return groove (21) is communicated with described oil leab by the first spill port, and described first spill port is arranged on the bottom of described first annular oil-return groove (21); Described second annular oil-return groove (91) is communicated with described oil leab by the second spill port, and described second spill port is arranged on the bottom of described second annular oil-return groove (91).
9. Turbo-generator Set as claimed in claim 8, it is characterized in that, described first inner grease retainer sheet (4) and described second inner grease retainer sheet (7) are copper catch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420521246.9U CN204099431U (en) | 2014-09-11 | 2014-09-11 | A kind of Turbo-generator Set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420521246.9U CN204099431U (en) | 2014-09-11 | 2014-09-11 | A kind of Turbo-generator Set |
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| CN204099431U true CN204099431U (en) | 2015-01-14 |
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| CN201420521246.9U Active CN204099431U (en) | 2014-09-11 | 2014-09-11 | A kind of Turbo-generator Set |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235194A (en) * | 2014-09-11 | 2014-12-24 | 兖州煤业股份有限公司 | Steam turbine generator unit |
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2014
- 2014-09-11 CN CN201420521246.9U patent/CN204099431U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235194A (en) * | 2014-09-11 | 2014-12-24 | 兖州煤业股份有限公司 | Steam turbine generator unit |
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