CN205064348U - A non - drive bearing structure for starting feed water pump - Google Patents
A non - drive bearing structure for starting feed water pump Download PDFInfo
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- CN205064348U CN205064348U CN201520796451.0U CN201520796451U CN205064348U CN 205064348 U CN205064348 U CN 205064348U CN 201520796451 U CN201520796451 U CN 201520796451U CN 205064348 U CN205064348 U CN 205064348U
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Abstract
The utility model provides a non - drive bearing structure for starting feed water pump, includes pump shaft, dust sucking disc, is provided with the pump shaft in bearing arrangement's centre, and the one end of pump shaft is provided with dust sucking disc, and the other end is provided with the fan, and in wherein dust sucking disc's one end boss set up bearing cover's before non - drive end recess, the outer lane of fan was equipped with the fan casing, and the other end boss of fan sets up in bearing cover's behind non - drive end the recess, be provided with the bearing before the non - drive end behind bearing cover and the non - drive end between the bearing cover, its outside top is provided with non - drive end bearing cap, and the hookup of screw NOT AND drive end bearing frame is passed through to the below, the inboard of non - drive end bearing frame is provided with the disc, double -screw bolt and nut are passed through to the one end of upper end cover, and the other end passes through spiral shell tail cone round pin, nut and bolt and back bearing cover hookup, be provided with a plurality of fin on the non - drive end bearing cap. The utility model has the characteristics of easy dismounting has reduced the complexity and the fault rate of system simultaneously, reduces the working costs.
Description
Technical field
The utility model relates to a kind of used in nuclear power station and starts feed water pump, particularly a kind of nonpowered axle bearing structure for starting feed water pump.
Background technique
Due to the development of national nuclear power technology, the demand of corollary equipment is also increasing, such as core pump, present stage the core pump market of China's nuclear power station still rely on external import, only have part core triplex to achieve production domesticization.Therefore, under the background of current national nuclear power great development, the production domesticization realizing core pump has become the primary urgent task of national nuclear power supervision department, nuclear power enterprise and domestic water pump industry.
Nuclear power provides reserve feed ability when being not only that suction booster/main feed pump or its associated lines lost efficacy with pneumatic feed water pump and pipeline Main Function thereof, perform the depth defense function of Decay heat removal system, but also there is the ability that steam generator under power plant's accidental conditions provides startup feedwater.
Existing used in nuclear power station starts feed water pump and has the following disadvantages:
1. bearing holder component adopts integral design, and safeguard that bearing working amount is large, maintenance is inconvenient, and maintenance cost is high.
2. non-driven-end bearing bears uneven radial force, produces amount of heat in operation, and tradition starts feed water pump and adopts radiating fin heat radiation, and pyroconductivity is low, and bearing operational reliability is low.
What the bearing structure on existing startup feed water pump adopted usually is pressure lubrication, and is furnished with outside oil supply system to bearing fuel feeding.Outside oil supply system comprises outside oil pump, fuel tank, cooler and pipeline etc., because this increasing the complexity of system and the source of trouble and adding operating cost.
In prior art, general non-driven-end bearing parts, due near motor side, do not allow mobile motor during dismounting, therefore dismounting narrow space, very inconvenient during dismounting.Meanwhile, in disassembly process, not only cause the waste of too much man power and material, result also in the probability of damage to device in disassembly process.Thus, design the simple and convenient nonpowered axle bearing structure of a dismounting and seem particularly important.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of easy accessibility, decreases complexity and the rate of fault of system simultaneously, and can reduce the nonpowered axle bearing structure for starting feed water pump of operating cost.
The technological scheme that the utility model solves the problems of the technologies described above is as follows:
For starting a nonpowered axle bearing structure for feed water pump, comprising pump shaft, dust suction disc, it is characterized in that: in the middle of nonpowered axle bearing structure, be provided with pump shaft, one end of pump shaft is provided with dust suction disc and is screwed, the other end is provided with fan, and is located by key, and back-up ring is fixed; One end boss of described dust suction disc is arranged in the groove of anti-drive end fore bearing gland; The outer ring of described fan is provided with fan guard, and the boss of the other end of fan is arranged in the groove of anti-drive end rear bearing gland; Be provided with bearing between described anti-drive end fore bearing gland and anti-drive end rear bearing gland, on the left of bearing inner race, be provided with spacer, on the right side of inner ring, be provided with oil ring cover, and by also cap locking; Be provided with non-driven-end bearing lid above anti-drive end fore bearing gland and anti-drive end rear bearing gland, below is connected with non-driven-end bearing seat by screw fastening; Described non-driven-end bearing covers and arranges temperature measuring element and the air-vent cap that cover has O type circle, and the outside of non-driven-end bearing lid is also provided with upper end cap and is fixed by lifting bolt; The inner side of described non-driven-end bearing seat is provided with disc, and lower end is provided with pipe plug, and the lateral ends of non-driven-end bearing seat is provided with the oil level indicator the other end and is provided with oil ga(u)ge; One end of described non-driven-end bearing lid is by stud, nut, and the other end is connected and fixed with non-driven-end bearing seat respectively by Screw tail cone pin, nut, bolt; Described non-driven-end bearing covers and is provided with several radiating fin.
Described radiating fin is provided with 14, and every limit is provided with seven radiating fin.
Between described anti-drive end fore bearing gland and non-driven-end bearing seat, between anti-drive end rear bearing gland and non-driven-end bearing seat, be provided with insulation spacer.
Described insulation spacer is fish paper pad.
The utility model structure is simple, easy accessibility, operates steadily, good seal performance, solves the system complexity of prior art and the high problem of rate of fault, and can reduce the feature of operating cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is left view of the present utility model.
1, dust suction disc, 2, anti-drive end fore bearing gland, 3, insulation spacer, 4, spacer, 5, O type circle, 6, temperature measuring element, 7, bearing, 8, upper end cap, 9, oil ring cover, 10, air-vent cap, 11, anti-drive end rear bearing gland, 12, non-driven-end bearing lid, 13, fan, 14, key, 15, back-up ring, 16, fan guard, 17, disc, 18, non-driven-end bearing seat, 19, pipe plug, 20, pump shaft, 21, oil level indicator, 22, stud, 23, nut, 24, radiating fin, 25, Screw tail cone pin, 26, bolt, 27, oil ga(u)ge.
Embodiment
As seen from the figure,
A kind of nonpowered axle bearing structure for starting feed water pump, comprise pump shaft 20, dust suction disc 1, it is characterized in that: in the middle of nonpowered axle bearing structure, be provided with pump shaft 20, one end of pump shaft 20 is provided with dust suction disc 1 and is screwed, the other end is provided with fan 13, and locate by by key 14, back-up ring 15 is fixed; One end boss of described dust suction disc 1 is arranged in the groove of anti-drive end fore bearing gland 2; The outer ring of described fan 13 is provided with fan guard 16, and the boss of the other end of fan 13 is arranged in the groove of anti-drive end rear bearing gland 11; Be provided with bearing 7 between described anti-drive end fore bearing gland 2 and anti-drive end rear bearing gland 11, on the left of bearing 7 inner ring, be provided with spacer 4, on the right side of inner ring, be provided with oil ring cover 9, and by also cap locking; Be provided with non-driven-end bearing lid 12 above anti-drive end fore bearing gland 2 and anti-drive end rear bearing gland 11, below is connected with non-driven-end bearing seat 18 by screw fastening; Described non-driven-end bearing lid 12 is arranged temperature measuring element 6 and air-vent cap 10 that cover has O type circle 5, the outside of non-driven-end bearing lid 12 is also provided with upper end cap 8 and is fixed by lifting bolt; The inner side of described non-driven-end bearing seat 18 is provided with disc 17, and lower end is provided with pipe plug 19, and the lateral ends of non-driven-end bearing seat 18 is provided with oil level indicator 21 the other end and is provided with oil ga(u)ge 27; One end of described non-driven-end bearing lid 12 is by stud 22, nut 23, and the other end is connected and fixed with non-driven-end bearing seat 18 respectively by Screw tail cone pin 25, nut 23, bolt 26; Described non-driven-end bearing lid 12 is provided with several radiating fin 24.
Described radiating fin 24 is provided with 14, and every limit is provided with seven radiating fin 24.
Between described anti-drive end fore bearing gland 2 and non-driven-end bearing seat 12, between anti-drive end rear bearing gland 11 and non-driven-end bearing seat 12, be provided with insulation spacer 3.
Described insulation spacer 3 is fish paper pad.
During concrete enforcement, first dust pan is loaded on axle, again non-driven-end bearing body and non-driven-end bearing lid are positioned by taper pin and nut, connect with stud and nut, anti-drive end fore bearing gland is loaded in bearing bore that drive end bearing body and drive end bearing lid form, then parts entirety is loaded on pump, by adjusting the effective length of rotor vibration movement determination spacer and being loaded on axle, again by a pair back-to-back angular contact ball bearing, oil ring cover, disc, rear bearing gland and fan are loaded on axle and bearing part, and fan guard is fixed on bearing part.
Because drive end bearing parts are near motor side, do not allow mobile motor during dismounting, therefore dismounting space is little, and roller bearing Internal and external cycle is separated.Drive end axle bearing component adopts middle open type structural design, in face of opening adopt the such bearing outer ring of finger setting can pull down with bearing support, bearing inner race is removed by special tool, and whole disassembly process is simple, easily.
Non-driven-end bearing bears uneven radial force, produces amount of heat in operation, and tradition starts feed water pump and adopts radiating fin heat radiation, and pyroconductivity is low, and bearing operational reliability is low.And the utility model is also provided with spindle nose self-cooling fan on the basis adopting radiating fin, significantly reduce bearing operating temperatures, improve bearing reliability.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model description to do equivalent structure or the conversion of equivalent flow process or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
In sum, a kind of nonpowered axle bearing structure for starting feed water pump described in the utility model, has easy accessibility, decreases complexity and the rate of fault of system simultaneously, and can reduce the feature of operating cost.
Claims (4)
1. one kind for starting the nonpowered axle bearing structure of feed water pump, comprise pump shaft (20), dust suction disc (1), it is characterized in that: in the middle of nonpowered axle bearing structure, be provided with pump shaft (20), one end of pump shaft (20) is provided with dust suction disc (1) and is screwed, the other end is provided with fan (13), and located by key (14), back-up ring (15) is fixed; One end boss of described dust suction disc (1) is arranged in the groove of anti-drive end fore bearing gland (2); The outer ring of described fan (13) is provided with fan guard (16), and the boss of the other end of fan (13) is arranged in the groove of anti-drive end rear bearing gland (11); Be provided with bearing (7) between described anti-drive end fore bearing gland (2) and anti-drive end rear bearing gland (11), on the left of bearing (7) inner ring, be provided with spacer (4), on the right side of inner ring, be provided with oil ring cover (9), and by also cap locking; Anti-drive end fore bearing gland (2) and anti-drive end rear bearing gland (11) top are provided with non-driven-end bearing lid (12), and below is connected with non-driven-end bearing seat (18) by screw; Described non-driven-end bearing lid (12) is arranged temperature measuring element (6) and air-vent cap (10) that cover has O type circle (5), the outside of non-driven-end bearing lid (12) is also provided with upper end cap (8) and is fixed by lifting bolt; The inner side of described non-driven-end bearing seat (18) is provided with disc (17), and lower end is provided with pipe plug (19), and the lateral ends of non-driven-end bearing seat (18) is provided with oil level indicator (21) the other end and is provided with oil ga(u)ge (27); One end of described non-driven-end bearing lid (12) is by stud (22), nut (23), and the other end is connected and fixed with non-driven-end bearing seat (18) respectively by Screw tail cone pin (25), nut (23), bolt (26); Described non-driven-end bearing lid (12) is provided with several radiating fin (24).
2. a kind of nonpowered axle bearing structure for starting feed water pump according to claim 1, is characterized in that: described radiating fin (24) is provided with 14, and every limit is provided with seven radiating fin (24).
3. a kind of nonpowered axle bearing structure for starting feed water pump according to claim 1 and 2, is characterized in that: between described anti-drive end fore bearing gland (2) and non-driven-end bearing seat (12), be provided with insulation spacer (3) between anti-drive end rear bearing gland (11) and non-driven-end bearing seat (12).
4. a kind of nonpowered axle bearing structure for starting feed water pump according to claim 3, is characterized in that: described insulation spacer (3) is fish paper pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796451.0U CN205064348U (en) | 2015-10-16 | 2015-10-16 | A non - drive bearing structure for starting feed water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520796451.0U CN205064348U (en) | 2015-10-16 | 2015-10-16 | A non - drive bearing structure for starting feed water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205064348U true CN205064348U (en) | 2016-03-02 |
Family
ID=55390911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520796451.0U Active CN205064348U (en) | 2015-10-16 | 2015-10-16 | A non - drive bearing structure for starting feed water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205064348U (en) |
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2015
- 2015-10-16 CN CN201520796451.0U patent/CN205064348U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 4, Sanji Road, Hongguang Town, Jingjiang City, Taizhou City, Jiangsu Province, China Patentee after: JIANGSU HAISHI PUMPS MANUFACTURING Co.,Ltd. Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 4, Sanji Road, Hongguang Town, Jingjiang City, Taizhou City, Jiangsu Province, China Patentee before: JIANGSU HAISHI PUMPS MANUFACTURING Co.,Ltd. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address after: No. 4, Sanji Road, Hongguang Town, Jingjiang City, Taizhou City, Jiangsu Province, China Patentee after: JIANGSU HAISHI PUMPS MANUFACTURING Co.,Ltd. Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: No. 4, Sanji Road, Hongguang Town, Jingjiang City, Taizhou City, Jiangsu Province, China Patentee before: JIANGSU HAISHI PUMPS MANUFACTURING Co.,Ltd. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE |