CN205036618U - Starting feed water pump adjusting collar for nuclear power station - Google Patents
Starting feed water pump adjusting collar for nuclear power station Download PDFInfo
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- CN205036618U CN205036618U CN201520791205.6U CN201520791205U CN205036618U CN 205036618 U CN205036618 U CN 205036618U CN 201520791205 U CN201520791205 U CN 201520791205U CN 205036618 U CN205036618 U CN 205036618U
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- impeller
- pump
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- adjusting collar
- adjustment sleeve
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Abstract
The utility model provides a starting feed water pump adjusting collar for nuclear power station, the left part is provided with the high pressure chest in the inner chamber of pump cover and pump body synthesis, and the right part is provided with the low pressure chamber, and sealing ring in the middle of being provided with between high pressure chest and the low pressure chamber has from left to right set gradually adjusting collar, bush between middle sealing ring and the pump shaft, the excircle surface of bush is provided with the levogyration helicla flute with the internal surface of middle sealing ring, the internal diameter of sealing ring in the middle of the external diameter of adjusting collar is less than, and the external diameter of adjusting collar is greater than the outer hub external diameter of the 9th grade of impeller right -hand member, the length change of adjusting collar is used for compensation and the centering of adjustment impeller channel with the spiral case runner. The utility model discloses an adjustable structural design, through the centering of adjusting collar and rotor drunkenness volume compensation adjustment impeller channel and spiral case runner, hydraulic losses is little, has improved the hydraulic efficiency of pump. The levogyration helicla flute that sets up on bush, the middle sealing ring not only plays sealed effect, has still reduced in the medium particulate matter to the abrasion of part, and it has life to have lengthened equipment.
Description
Technical field
The utility model belongs to nuclear power pump technical field, and particularly a kind of used in nuclear power station starts feed water pump adjustment sleeve.
Background technique
Along with the speed of China's nuclear power technology develops, the demand of supplementary equipment core pump is also increasing, but present stage China's nuclear power station core pump (one, two, three pump of core) market substantially still rely on external import, only have part core 3 grades of pumps to achieve production domesticization.Therefore, under the background of current national nuclear power great development, the production domesticization realizing core pump has become the urgent task of national nuclear power supervision department, nuclear power enterprise and domestic water pump industry.
CAP1400 nuclear power startup feed water pump and associated lines Main Function thereof provide reserve feed ability when being not only that suction booster/main feed pump or its associated lines lost efficacy, perform the depth defense function of Decay heat removal system, but also there is the ability providing startup feedwater under power plant's accidental conditions to steam generator.Existing used in nuclear power station starts feed water pump and has the following disadvantages: by the accuracy of alignment of the width of pumping chamber at different levels and regulable control hydraulic part (impeller and the pumping chamber) runner of rotor vibration movement, hydraulic loss is large, and level of efficiency is low.
Summary of the invention
The purpose of this utility model to solve the problems of the technologies described above.
The purpose of this utility model is achieved in that a kind of used in nuclear power station starts feed water pump adjustment sleeve, comprise pump shaft, pump cover, the pump housing, in the inner chamber that pump cover and the pump housing synthesize, left part is provided with hyperbaric chamber, right part is provided with low-pressure cavity, be provided with intermediate seal ring between hyperbaric chamber and low-pressure cavity, in hyperbaric chamber, be from left to right disposed with the 6th grade of impeller, the 7th grade of impeller, the 8th grade of impeller, the 9th grade of impeller; First order impeller, second level impeller, third level impeller, fourth stage impeller, level V impeller is disposed with from right to left in low-pressure cavity, the import of level V impeller (21) place pumping chamber is communicated with by two transition runners with the outlet of the 6th grade of impeller (22) place pumping chamber, and these two transition runners are arranged symmetrically on the pump housing and pump cover with 180 °; Pump shaft left end in the pump housing 14 is provided with drive end bearing parts 2, and right-hand member is provided with non-driven-end bearing parts 13;
It is characterized in that: be from left to right disposed with adjustment sleeve, lining between described intermediate seal ring and pump shaft, adjustment sleeve left side contacts with the right side of the 9th grade of impeller, and lining right side contacts with the left side of level V impeller; The outer round surface of lining (902) and the internal surface of intermediate seal ring (9) are provided with left-turn spiral groove.
The external diameter of described adjustment sleeve is less than the internal diameter of intermediate seal ring, and the external diameter of adjustment sleeve is greater than the outer wheel hub external diameter of the 9th grade of impeller right-hand member; The length dimension L1 of adjustment sleeve is used for the centering of compensation adjustment impeller channel and spiral casing flow passage.
The utility model structure is simple, reasonable in design, by the centering of adjustment sleeve and rotor vibration movement compensation adjustment impeller channel and spiral casing flow passage, even if indivedual impeller channel and spiral case have deviation slightly, also can ensure the overall performance of pump without impact, runner precision is high, hydraulic loss is little, improve the level of efficiency of pump, the outer round surface of lining and the internal surface of intermediate seal ring are provided with left-turn spiral groove, not only play seal action, to also reduce in medium particulate matter to the abrasion of part, the equipment of extending has working life, apply and there is good economic and social benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is I partial enlarged drawing of Fig. 1.
In figure: 1. rotor part; 2. drive end bearing parts; 3. pump cover; 4. gimbal; 5. casing ring; 6. secondary impeller seal ring; 7. needle type valve R1; 8. machine envelope cleaning hose assembly; 9. intermediate seal ring; 10. first stage impeller seal ring; 11. suction chamber seal rings; 12. pump shafts; 13. non-driven-end bearing parts; 14. pump housings; 15. balanced water returning pipe assemblies; 16. drain pipe assemblies; 17. first order impellers; 18. second level impellers; 19. third level impellers; 20. fourth stage impellers; 21. level V impellers; 22. the 6th grades of impellers; 23. the 7th grades of impellers; 24. the 8th grades of impellers; 25. the 9th grades of impellers; 901. adjustment sleeve; 902. lining; 903. length dimension L1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, but not as to restriction of the present utility model:
A kind of used in nuclear power station starts feed water pump adjustment sleeve, comprises stator component, rotor part 1, two overlaps mechanical seal, machine seals cleaning hose assembly 8 and bearing part; Stator component comprises the pump housing 14 and balanced water returning pipe assembly 15, rotor part 1 comprises pump shaft 12, the impeller be sleeved on pump shaft 12, intermediate seal ring 9, rear sealing axle sleeve and sleeve nut, and bearing part comprises drive end bearing parts 2, non-driven-end bearing parts 13; In the inner chamber that pump cover 3 and the pump housing 14 synthesize, left part is provided with hyperbaric chamber, right part is provided with low-pressure cavity, be provided with intermediate seal ring 9 between hyperbaric chamber and low-pressure cavity, in hyperbaric chamber, be from left to right disposed with the 6th grade of impeller 22, the 7th grade of impeller 23, the 8th grade of impeller 24, the 9th grade of impeller 25; First order impeller 17, second level impeller 18, third level impeller 19, fourth stage impeller 20, level V impeller 21 is disposed with from right to left in low-pressure cavity, the import of level V impeller (21) place pumping chamber is communicated with by two transition runners with the outlet of the 6th grade of impeller (22) place pumping chamber, and these two transition runners are arranged symmetrically in the pump housing 14 with on pump cover 3 with 180 °; Pump shaft left end in the pump housing 14 is provided with drive end bearing parts 2, and right-hand member is provided with non-driven-end bearing parts 13; From left to right be disposed with adjustment sleeve 901, lining 902 between described intermediate seal ring 9 and pump shaft 12, adjustment sleeve 901 left side contacts with the right side of the 9th grade of impeller 25, and lining 902 right side contacts with the left side of level V impeller 21; The outer round surface of lining (902) and the internal surface of intermediate seal ring (9) are provided with left-turn spiral groove.
The external diameter of described adjustment sleeve 901 is less than the internal diameter of intermediate seal ring 9, and the external diameter of adjustment sleeve 901 is greater than the outer wheel hub external diameter of the 9th grade of impeller 25 right-hand member; The length dimension L1903 of adjustment sleeve 901 is used for the centering of compensation adjustment impeller channel and spiral casing flow passage.
Obviously, above-described embodiment is only for the utility model example is clearly described, and the restriction not to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all mode of executions.And thus the apparent change of amplifying out or variation be still among protection domain of the present utility model.
Claims (2)
1. a used in nuclear power station starts feed water pump adjustment sleeve, comprise pump shaft (12), pump cover (3), the pump housing (14), in the inner chamber that pump cover (3) and the pump housing (14) synthesize, left part is provided with hyperbaric chamber, and right part is provided with low-pressure cavity, is provided with intermediate seal ring (9) between hyperbaric chamber and low-pressure cavity; The 6th grade of impeller (22), the 7th grade of impeller (23), the 8th grade of impeller (24), the 9th grade of impeller (25) is from left to right disposed with in hyperbaric chamber; First order impeller (17), second level impeller (18), third level impeller (19), fourth stage impeller (20), level V impeller (21) is disposed with from right to left in low-pressure cavity, the import of level V impeller (21) place pumping chamber is communicated with by two transition runners with the outlet of the 6th grade of impeller (22) place pumping chamber, and these two transition runners are arranged symmetrically in the pump housing (14) with on pump cover (3) with 180 °; Pump shaft left end in the pump housing (14) is provided with drive end bearing parts (2), and right-hand member is provided with non-driven-end bearing parts (13); It is characterized in that: between described intermediate seal ring (9) and pump shaft (12), be from left to right disposed with adjustment sleeve (901), lining (902), adjustment sleeve (901) left side contacts with the right side of the 9th grade of impeller (25), and lining (902) right side contacts with the left side of level V impeller (21); The outer round surface of lining (902) and the internal surface of intermediate seal ring (9) are provided with left-turn spiral groove.
2. a kind of used in nuclear power station according to claim 1 starts feed water pump adjustment sleeve, it is characterized in that: the external diameter of described adjustment sleeve (901) is less than the internal diameter of intermediate seal ring (9), and the external diameter of adjustment sleeve (901) is greater than the outer wheel hub external diameter of the 9th grade of impeller (25) right-hand member; The length dimension L1(903 of adjustment sleeve (901)) for the centering of compensation adjustment impeller channel and spiral casing flow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520791205.6U CN205036618U (en) | 2015-10-14 | 2015-10-14 | Starting feed water pump adjusting collar for nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520791205.6U CN205036618U (en) | 2015-10-14 | 2015-10-14 | Starting feed water pump adjusting collar for nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205036618U true CN205036618U (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520791205.6U Active CN205036618U (en) | 2015-10-14 | 2015-10-14 | Starting feed water pump adjusting collar for nuclear power station |
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| Country | Link |
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| CN (1) | CN205036618U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337821A (en) * | 2016-09-29 | 2017-01-18 | 上海阿波罗机械股份有限公司 | Startup feedwater pump set for nuclear power plant |
| CN108150428A (en) * | 2017-12-22 | 2018-06-12 | 张秋达 | A kind of agricultural irrigation is used with the water pump for adjusting hydraulic pressure size |
-
2015
- 2015-10-14 CN CN201520791205.6U patent/CN205036618U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337821A (en) * | 2016-09-29 | 2017-01-18 | 上海阿波罗机械股份有限公司 | Startup feedwater pump set for nuclear power plant |
| CN108150428A (en) * | 2017-12-22 | 2018-06-12 | 张秋达 | A kind of agricultural irrigation is used with the water pump for adjusting hydraulic pressure size |
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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 |