CN103195737A - Bearing for main feed water pump - Google Patents
Bearing for main feed water pump Download PDFInfo
- Publication number
- CN103195737A CN103195737A CN2013101261061A CN201310126106A CN103195737A CN 103195737 A CN103195737 A CN 103195737A CN 2013101261061 A CN2013101261061 A CN 2013101261061A CN 201310126106 A CN201310126106 A CN 201310126106A CN 103195737 A CN103195737 A CN 103195737A
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- bearing
- thrust
- disc
- tile fragment
- bearing support
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Abstract
The invention discloses a bearing for a main feed water pump. The bearing comprises an oil retaining disc, a thrust disc, an axial displacement measuring disc and a bearing block; the oil retaining disc is sleeved on a pump shaft, and the bearing block is sleeved on the radial outer side of the oil retaining disc, the radial outer side of the thrust disc and the radial outer side of the axial displacement measuring disc; a front thrust pad seat and a rear thrust pad seat are fixed onto the inner circumference of the bearing block and are symmetrically arranged on the front side and the rear side of the thrust disc; a plurality of front thrust pads which are uniformly distributed around the pump shaft are arranged between the front thrust pad seat and the front end surface of the thrust disc; and a plurality of rear thrust pads which are uniformly distributed around the pump shaft are arranged between the rear thrust pad seat and the rear end surface of the thrust disc. The bearing has the technical advantages that axial force on the pump shaft is balanced under a synergetic effect of the front thrust pads, the thrust disc and the rear thrust pads when the main feed water pump runs, the pump shaft is prevented from being damaged during running, and the safety running of the main feed water pump is guaranteed.
Description
Technical field
The present invention relates to a kind of bearing for main feed pump in nuclear power generating equipment field.
Background technique
Main feed pump is non-nuclear level pump, its major function of main feed pump in pressurized-water reactor nuclear power plant is: the water that comes to oxygen-eliminating device pressurizes, the water that comes of oxygen-eliminating device enters high-pressure heater and steam generator then, makes steam generator generate the main steam turbine generating that steam removes to drive nuclear power station.And in the stage in period of a loop reactor shutdown, what the unnecessary heat in the heap also can make main feed pump gives water generates steam, and the heat of a loop medium is derived, and plays the effect in cooling one loop.Moreover be that main feed pump also can play the effect that unnecessary heat is derived when accident conditionses such as the unexpected removal of load of main steam turbine or generation steam line break.Therefore, the operational reliability of main feed pump is very important.
In the process of main feed pump operation, the pump shaft of main feed pump is subjected to very big axial force, present main feed pump all is the axial force that the balancing drum of socket on the dependence pump shaft comes the balance pump shaft to be subjected to, but this is not enough to the axial force that the balance pump shaft is subjected to, pump shaft still has the very big danger that damages because of axial force, the safe operation that jeopardizes main feed pump.Therefore described those skilled in the art wish bearing on the main feed pump when pump shaft is supported, the axial force that the balance pump shaft is suffered, but relevant report is not also arranged at present.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, a kind of bearing for main feed pump is provided, and this bearing can be in the process of main feed pump operation, the axial force that the active balance axle is suffered, prevent that pump shaft from damaging in running, ensured the safe operation of main feed pump.
A kind of technological scheme that realizes above-mentioned purpose is: a kind of bearing for main feed pump, comprise that the oil baffle disc, thrust disc and the axial location that are socketed in pump shaft move dish, and be socketed in the bearing support that described oil baffle disc, described thrust disc and described axial location move the disc radial outside;
Forward thrust tile fragment seat and back thrust pad seat are fixedly arranged on the inner circumference of described bearing support, and described forward thrust tile fragment seat and back thrust pad seat bilateral symmetry before and after described thrust disc are arranged;
Be provided with some around the uniform forward thrust tile fragment of described pump shaft between the front-end face of described forward thrust tile fragment seat and described thrust disc;
Be provided with some around the uniform back thrust pad of described pump shaft between the ear end face of described back thrust pad seat and described thrust disc.
Further, described bearing support and described thrust disc are provided with the thrust disc overcoat that is socketed on the described thrust disc excircle between radially, and described forward thrust tile fragment and described back thrust pad is radially fixing.
Further, described bearing support and described axial location move and are provided with the rear bearing end cap between the disc radial, and the ear end face of described rear bearing end cap is provided with rear bearing end cap cover plate.
Further, also be provided with fore bearing end cap, tile fragment and bearing support interstage sleeve between described bearing support and the described pump shaft, make between described fore bearing end cap, tile fragment and the described bearing support and form oil suction chamber, form oil-discharging cavity between described tile fragment, described bearing support and the described bearing support interstage sleeve, the inner circumference of described tile fragment and described bearing support is fixed, make and form the radial clearance that described oil suction chamber and described oil-discharging cavity are communicated with between described pump shaft and the described tile fragment, described fore bearing end cap is provided with the oil-feed through hole, and described bearing support bottom is provided with the oil extraction through hole.
Further again, described bearing support and described fore bearing end cap be by connecting and fixing, and described fore bearing end cap and described oil baffle disc are provided with mazy type mechanical seal between radially.
Further, the bottom of described tile fragment is provided with disc.
Further, described bearing support is divided into upper bearing bracket and step; Described tile fragment is divided into tile fragment and following tile fragment.
Adopted the technological scheme of a kind of bearing for main feed pump of the present invention, namely arrange forward thrust tile fragment and back thrust pad on former and later two end faces of thrust disc respectively, forward thrust tile fragment and back thrust pad be corresponding technological scheme by forward thrust tile fragment seat and back thrust pad seat axial restraint respectively.Its technique effect is: in the process of main feed pump operation, by the synergy of forward thrust tile fragment, thrust disc and back thrust pad, balance the suffered axial force of pump shaft, prevent that pump shaft from damaging in running, ensured the safe operation of main feed pump.
Description of drawings
Fig. 1 is the structural representation of a kind of bearing for main feed pump of the present invention.
Fig. 2 is the ear end face schematic representation of a kind of bearing for main feed pump of the present invention.
Fig. 3 is the worm's eye view of a kind of bearing for main feed pump of the present invention.
Embodiment
See also Fig. 1, the present inventor be in order to understand technological scheme of the present invention better, below by embodiment particularly, and is described in detail by reference to the accompanying drawings:
See also Fig. 1, a kind of bearing for main feed pump of the present invention is socketed in the anti-drive end of main feed pump pump shaft 100.This bearing comprise the oil baffle disc 101 fixedly sleeved with pump shaft 100, thrust disc 102 and axially location move dish 103, and be socketed in oil baffle disc 101, thrust disc 102 and axially location move bearing support 1 on dish 103 excircles.Wherein oil baffle disc 101 and bearing support 1 radially between be provided with fore bearing end cap 2, between fore bearing end cap 2 and the bearing support 1 by connecting and fixing.For the ease of the clamping of fore bearing end cap 2 and bearing support 1, bearing support 1 is divided into upper bearing bracket 11 and step 12.Upper bearing bracket 11 and step 12 respectively with 2 clampings of fore bearing end cap, and pass through bolt between upper bearing bracket 11 and the step 12.In order to prevent the clearance leakage between lubricant oil the past bearing (ball) cover 2 and the oil baffle disc 101, be provided with mazy type mechanical seal between fore bearing end cap 2 and the oil baffle disc 101.
The installation of tile fragment 3 for convenience, tile fragment 3 is divided into tile fragment 31 and following tile fragment 32.Last tile fragment 31 is fixed by screw with the inner circumference of upper bearing bracket 11, and following tile fragment 32 is fixed by screw with the inner circumference of step 32.Simultaneously, the bottom of tile fragment 3 namely descends the bottom of tile fragment 32 to be provided with disc 33, so that the lubricant oil in the described oil suction chamber is got rid of into described oil-discharging cavity.
Greatest improvement of the present invention is: also be provided with forward thrust tile fragment seat 6 and back thrust pad 8 on the inner circumference of bearing support 1.Forward thrust tile fragment seat 6 and back thrust pad seat 8 arrange in thrust disc 102 front and back bilateral symmetry, and thrust disc 102 and bearing support 1 are provided with the thrust disc overcoat 14 that is socketed on thrust disc 102 excircles between radially.
Forward thrust tile fragment seat 6 arranges near bearing support interstage sleeve 4 ear end faces, and 6 of forward thrust tile fragment seats are made up of the first forward thrust tile fragment seat 61 and the second forward thrust tile fragment seat 62.
Back thrust pad seat 8 moves dish 103 front-end faces near axial location and arranges, 8 of back thrust pad seats by the first back thrust pad seat 81 and second afterwards thrust pad seat 82 form.
Be provided with somely around the uniform forward thrust tile fragment 5 of pump shaft 100 between the ear end face of forward thrust tile fragment seat 6 and the front-end face of thrust disc 102, in the present embodiment, the quantity of forward thrust tile fragment 5 is six.
Be provided with somely around the uniform back thrust pad 7 of pump shaft 100 between the ear end face of the front-end face of back thrust pad seat 8 and thrust disc 102, in the present embodiment, the quantity of back thrust pad 7 is six.
Forward thrust tile fragment seat 6 and thrust disc overcoat 14 are radially fixing with forward thrust tile fragment 5, and back thrust pad seat 8 and thrust disc overcoat 14 are radially fixed back thrust pad 7.
A kind of bearing for main feed pump of the present invention, synergy by forward thrust tile fragment 5, thrust disc 102 and back thrust pad 7, in the process of main feed pump operation, outside pump shaft 100 is supported, also balance the suffered axial force of pump shaft 100, prevent that pump shaft 100 from damaging, and ensured the safe operation of main feed pump in running.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention the above embodiment's variation, modification.
Claims (7)
1. bearing that is used for main feed pump, comprise that the oil baffle disc (101), thrust disc (102) and the axial location that are socketed in pump shaft (100) move dish (103), and be socketed in the bearing support (1) that described oil baffle disc (101), described thrust disc (102) and described axial location move dish (103) radial outside; It is characterized in that:
Forward thrust tile fragment seat (6) and back thrust pad seat (8) are fixedly arranged on the inner circumference of described bearing support (1), and described forward thrust tile fragment seat (6) and back thrust pad seat (8) bilateral symmetry before and after described thrust disc (102) is arranged;
Be provided with some around the uniform forward thrust tile fragment (5) of described pump shaft (100) between the front-end face of described forward thrust tile fragment seat (6) and described thrust disc (102);
Be provided with some around the uniform back thrust pad (7) of described pump shaft (100) between the ear end face of described back thrust pad seat (8) and described thrust disc (102).
2. a kind of bearing for main feed pump according to claim 1, it is characterized in that: described bearing support (1) and described thrust disc (102) are provided with the thrust disc overcoat (14) that is socketed on described thrust disc (102) excircle between radially, and described forward thrust tile fragment (5) and described back thrust pad (7) is radially fixing.
3. a kind of bearing for main feed pump according to claim 1, it is characterized in that: described bearing support (1) and described axial location move dish (103) and are provided with rear bearing end cap (9) between radially, and the ear end face of described rear bearing end cap (9) is provided with rear bearing end cap cover plate (91).
4. a kind of bearing for main feed pump according to claim 1, it is characterized in that: also be provided with fore bearing end cap (2) between described bearing support (1) and the described pump shaft (100), tile fragment (3) and bearing support interstage sleeve (4), make described fore bearing end cap (2), form oil suction chamber between tile fragment (3) and the described bearing support (1), described tile fragment (3), form oil-discharging cavity between described bearing support (1) and the described bearing support interstage sleeve (4), described tile fragment (3) is fixed with the inner circumference of described bearing support (1), make and form the radial clearance that described oil suction chamber and described oil-discharging cavity are communicated with between described pump shaft (100) and the described tile fragment (3), described fore bearing end cap (2) is provided with the oil-feed through hole, and described bearing support (1) bottom is provided with oil extraction through hole (13).
5. a kind of bearing for main feed pump according to claim 4, it is characterized in that: described bearing support (1) and described fore bearing end cap (2) be by connecting and fixing, and described fore bearing end cap (2) and described oil baffle disc (101) are provided with mazy type mechanical seal between radially.
6. a kind of bearing for main feed pump according to claim 4, it is characterized in that: the bottom of described tile fragment (3) is provided with disc (33).
7. according to any described a kind of bearing for main feed pump in the claim 1 to 3, it is characterized in that: described bearing support (1) is divided into upper bearing bracket (11) and step (12); Described tile fragment (3) is divided into tile fragment (31) and following tile fragment (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310126106.1A CN103195737B (en) | 2013-04-12 | 2013-04-12 | A kind of bearing for main feed pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310126106.1A CN103195737B (en) | 2013-04-12 | 2013-04-12 | A kind of bearing for main feed pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195737A true CN103195737A (en) | 2013-07-10 |
| CN103195737B CN103195737B (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310126106.1A Active CN103195737B (en) | 2013-04-12 | 2013-04-12 | A kind of bearing for main feed pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103195737B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499582A (en) * | 2013-09-27 | 2014-01-08 | 首钢京唐钢铁联合有限责任公司 | Thrust pad inspection method for damping thrust bearing |
| CN106763194A (en) * | 2017-02-27 | 2017-05-31 | 重庆江增船舶重工有限公司 | A kind of sliding bearing sealing structure |
| CN107676377A (en) * | 2017-10-31 | 2018-02-09 | 江苏永钢集团有限公司 | Self-aligning thrust-journal plain bearing on-line tuning device and its method of adjustment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3634624A1 (en) * | 1986-10-10 | 1988-04-14 | Voswinkel Kg | Hydraulic coupling which can be engaged under pressure and the operating state of which is established with pressure assistance |
| JP2004132187A (en) * | 2002-10-08 | 2004-04-30 | Hitachi Industries Co Ltd | Feed water pump and bearing device therefor |
| CN201763613U (en) * | 2010-09-09 | 2011-03-16 | 重庆水泵厂有限责任公司 | High-pressure self-balance horizontal multistage centrifugal pump |
| CN101994701A (en) * | 2009-08-21 | 2011-03-30 | 辽宁恒星泵业有限公司 | Pipeline delivery pump |
| CN203257657U (en) * | 2013-04-12 | 2013-10-30 | 上海阿波罗机械股份有限公司 | Bearing for main water-feeding pump |
-
2013
- 2013-04-12 CN CN201310126106.1A patent/CN103195737B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3634624A1 (en) * | 1986-10-10 | 1988-04-14 | Voswinkel Kg | Hydraulic coupling which can be engaged under pressure and the operating state of which is established with pressure assistance |
| JP2004132187A (en) * | 2002-10-08 | 2004-04-30 | Hitachi Industries Co Ltd | Feed water pump and bearing device therefor |
| CN101994701A (en) * | 2009-08-21 | 2011-03-30 | 辽宁恒星泵业有限公司 | Pipeline delivery pump |
| CN201763613U (en) * | 2010-09-09 | 2011-03-16 | 重庆水泵厂有限责任公司 | High-pressure self-balance horizontal multistage centrifugal pump |
| CN203257657U (en) * | 2013-04-12 | 2013-10-30 | 上海阿波罗机械股份有限公司 | Bearing for main water-feeding pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499582A (en) * | 2013-09-27 | 2014-01-08 | 首钢京唐钢铁联合有限责任公司 | Thrust pad inspection method for damping thrust bearing |
| CN103499582B (en) * | 2013-09-27 | 2015-11-25 | 首钢京唐钢铁联合有限责任公司 | Thrust pad inspection method for damping thrust bearing |
| CN106763194A (en) * | 2017-02-27 | 2017-05-31 | 重庆江增船舶重工有限公司 | A kind of sliding bearing sealing structure |
| CN107676377A (en) * | 2017-10-31 | 2018-02-09 | 江苏永钢集团有限公司 | Self-aligning thrust-journal plain bearing on-line tuning device and its method of adjustment |
| CN107676377B (en) * | 2017-10-31 | 2023-06-13 | 江苏永钢集团有限公司 | Online adjusting device and method for self-aligning radial thrust sliding bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103195737B (en) | 2015-12-02 |
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