CN202756251U - Electric auxiliary water-feeding pump of pressurized water reactor nuclear power station - Google Patents
Electric auxiliary water-feeding pump of pressurized water reactor nuclear power station Download PDFInfo
- Publication number
- CN202756251U CN202756251U CN 201220393916 CN201220393916U CN202756251U CN 202756251 U CN202756251 U CN 202756251U CN 201220393916 CN201220393916 CN 201220393916 CN 201220393916 U CN201220393916 U CN 201220393916U CN 202756251 U CN202756251 U CN 202756251U
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- Prior art keywords
- drive side
- suction
- pump cover
- axle
- mechanical seal
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Abstract
The utility model discloses an electric auxiliary water-feeding pump of a pressurized water reactor nuclear power station. The electric auxiliary water-feeding pump of the pressurized water reactor nuclear power station comprises a barrel body, a shaft, a drive side bearing component, a drive side mechanical sealing component, a suction section, a suction separation plate, a multi-stage impeller, a multi-stage middle section, a pump cover, a non-drive side mechanical sealing component and a non-drive side bearing component, wherein the shaft, the suction section, the suction separation plate, the multi-stage impeller and the multi-stage middle section form a core inclusion, and the core inclusion, the pump cover, the non-drive side mechanical sealing component, the non-drive side bearing component, the drive side bearing component and the drive side mechanical sealing component form a core-pulling type rotor component. According to the electric auxiliary water-feeding pump of the pressurized water reactor nuclear power station, the shaft, the impeller, a guide vane, the middle section, a suction section component and the suction separation plate serve as the core inclusion, and the core inclusion can be drawn out along with bearing bodies at two ends of the pump cover. The whole process of detaching the pump, replacing the rotor component and reassembling the pump can be completed with 20 hours, the time for replacing spare parts can be lowered to the maximum extent, and the amount of nuclear radiation suffered by workers in the process of replacing the spare parts after equipment is installed on site can be reduced.
Description
Technical field
The utility model relates to compressed water reactor nuclear power and stands in the electronic auxiliary feed water pump that uses in the secondary circuit.
Background technique
Electronic auxiliary feed water pump belongs to the nuclear power station engineered safeguards features, its safety effect is when any one link of main feed system breaks down, supply water to steam generator secondary circuit side as emergent means, make a loop keep a low-temperature receiver, discharge the reactor core surplus power, until residual heat removal system puts into operation.
In view of top mentioned Safety function, in the situation about starting fast during in earthquake, without pre-lubrication, electronic auxiliary feed water pump should be able to guarantee their roles on safety.For guaranteeing that electronic auxiliary feed water pump can satisfy the predetermined function requirement under accidental conditions and accident conditions, need the pump of a kind of brand new of innovation to satisfy its functional requirement.
The model utility content
Technical problem to be solved in the utility model is to provide for the existing existing problem of electronic auxiliary feed water pump a kind of electronic auxiliary feed water pump of pressurized-water reactor nuclear power plant.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
The electronic auxiliary feed water pump of pressurized-water reactor nuclear power plant, comprise cylindrical shell, axle, inboard bearing parts, driving side mechanical seal parts, suction casing, suction dividing plate, multi-stage impeller, multistage stage casing, pump cover, non-drive side mechanical seal parts and non-drive side bearing part, the top of described cylindrical shell is respectively arranged with the suction port that is made of the suction flange and the outlet that is made of outlet(discharge) flange, described axle is passed by cylindrical shell, one end of axle is driving side, and the other end is non-drive side; The driving side of described axle supports in the cylindrical shell by the suction casing that is tightly connected with cylindrical shell, and the non-drive side of axle is supported in the cylindrical shell by the pump cover that is tightly connected with cylindrical shell, and described pump cover is bolted on the cylindrical shell by pump cover; Described driving side mechanical seal parts are arranged between described axle and the described suction casing, described non-drive side mechanical seal parts are arranged between described axle and the pump cover, described inboard bearing parts are enclosed within the driving side of described axle and are fixed on the suction casing, described non-drive side bearing part is enclosed within the driving side of described axle and is fixed on the pump cover, suction dividing plate, multi-stage impeller, multistage stage casing are being installed between described suction casing and pump cover on the described axle, and each stage casing is arranged on the outlet port of every grade of impeller; Between described axle and pump cover, also be provided with balancing drum and balance set, described balancing drum is connected to impeller, suck dividing plate between first stage impeller and suction casing, it is characterized in that, described axle, suction casing, suction dividing plate, multi-stage impeller, multistage stage casing consist of a core inclusion, form a Drawing-Core rotor part together with pump cover, non-drive side mechanical seal parts, non-drive side bearing part, inboard bearing parts, driving side mechanical seal parts.
Described driving side mechanical seal parts and non-drive side mechanical seal parts are single end face balance type integrated mechanical sealing parts.
Owing to adopted structure as above, axle of the present utility model, impeller, stator, stage casing, suction casing parts and suction dividing plate are as the core inclusion, and related bearings at both ends body and pump cover can be extracted out together.Can in 20 hours, finish pump dismounting, change rotor part and refill and join overall process.Reduce to greatest extent the spare part time of changing, minimizing equipment is installed to the metering that is subjected to nuclear radiation when on-the-spot rear staff changes spare part.
Driving side mechanical seal parts of the present utility model and non-drive side mechanical seal parts are single end face balance type integrated mechanical sealing parts, in case there was a mechanical failure, axle bush has the ability that restriction is leaked.Any leakage of sealing all collects by the bearing support section, and by special pipeline white-out.These mechanical seal mounting or dismounting, maintenance do not need travel motor, reduce engineering time, can finish the replacing operation of mechanical seal in 10 hours.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Further describe the utility model below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, the electronic auxiliary feed water pump of the pressurized-water reactor nuclear power plant that provides among the figure, comprise cylindrical shell 100, axle 200, inboard bearing parts 300, driving side mechanical seal parts 400, suction casing 510, suck dividing plate 520, multi-stage impeller 530, multistage stage casing 540, pump cover 600, non-drive side mechanical seal parts 700 and non-drive side bearing part 800, the top of cylindrical shell 100 is respectively arranged with the suction port that is made of suction flange 110 and the outlet that is made of outlet(discharge) flange 120.
Axle 200 is passed by cylindrical shell 100, and an end of axle 200 is driving side, and the other end is non-drive side; The driving side of axle 200 supports in the cylindrical shells 100 by the suction casing 510 that is tightly connected with cylindrical shell 100, in the non-drive side of axle 200 is supported on the cylindrical shell 100 by the pump cover 600 that is tightly connected with cylindrical shell 100.
Inboard bearing parts 300 are enclosed within the driving side of axle 200 and are fixed on the suction casing 510, and non-drive side bearing part 800 is enclosed within the driving side of axle 200 and is fixed on the pump cover 700.
Also be provided with balancing drum 550 and balance set 560 between axle 200 and pump cover 700, balancing drum 550 is connected to impeller 530, sucks dividing plate 520 between first stage impeller 530 and suction casing 510.
Axle 200, suction casing 510, suction dividing plate 520, multi-stage impeller 530, multistage stage casing 540 consist of a core inclusion, form a Drawing-Core rotor part and can extract out together together with pump cover 700, non-drive side mechanical seal parts 700, non-drive side bearing part 800, inboard bearing parts 300, driving side mechanical seal parts 400.Therefore can in 20 hours, finish the pump dismounting, change rotor part and refill and join overall process.Reduce to greatest extent the spare part time of changing, minimizing equipment is installed to the metering that is subjected to nuclear radiation when on-the-spot rear staff changes spare part.
Driving side mechanical seal parts 400 and non-drive side mechanical seal parts 700 are single end face balance type integrated mechanical sealing parts.In case there was a mechanical failure, axle bush has the ability that restriction is leaked.Any leakage of sealing all collects by the bearing support section, and by special pipeline white-out.These mechanical seal mounting or dismounting, maintenance do not need travel motor, reduce engineering time, can finish the replacing operation of mechanical seal in 10 hours.
Claims (2)
1. the electronic auxiliary feed water pump of pressurized-water reactor nuclear power plant, comprise cylindrical shell, axle, inboard bearing parts, driving side mechanical seal parts, suction casing, suction dividing plate, multi-stage impeller, multistage stage casing, pump cover, non-drive side mechanical seal parts and non-drive side bearing part, the top of described cylindrical shell is respectively arranged with the suction port that is made of the suction flange and the outlet that is made of outlet(discharge) flange, described axle is passed by cylindrical shell, one end of axle is driving side, and the other end is non-drive side; The driving side of described axle supports in the cylindrical shell by the suction casing that is tightly connected with cylindrical shell, and the non-drive side of axle is supported in the cylindrical shell by the pump cover that is tightly connected with cylindrical shell, and described pump cover is bolted on the cylindrical shell by pump cover; Described driving side mechanical seal parts are arranged between described axle and the described suction casing, described non-drive side mechanical seal parts are arranged between described axle and the pump cover, described inboard bearing parts are enclosed within the driving side of described axle and are fixed on the suction casing, described non-drive side bearing part is enclosed within the driving side of described axle and is fixed on the pump cover, suction dividing plate, multi-stage impeller, multistage stage casing are being installed between described suction casing and pump cover on the described axle, and each stage casing is arranged on the outlet port of every grade of impeller; Between described axle and pump cover, also be provided with balancing drum and balance set, described balancing drum is connected to impeller, suck dividing plate between first stage impeller and suction casing, it is characterized in that, described axle, suction casing, suction dividing plate, multi-stage impeller, multistage stage casing consist of a core inclusion, form a Drawing-Core rotor part together with pump cover, non-drive side mechanical seal parts, non-drive side bearing part, inboard bearing parts, driving side mechanical seal parts.
2. the electronic auxiliary feed water pump of pressurized-water reactor nuclear power plant as claimed in claim 1 is characterized in that, described driving side mechanical seal parts and non-drive side mechanical seal parts are single end face balance type integrated mechanical sealing parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393916 CN202756251U (en) | 2012-08-09 | 2012-08-09 | Electric auxiliary water-feeding pump of pressurized water reactor nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393916 CN202756251U (en) | 2012-08-09 | 2012-08-09 | Electric auxiliary water-feeding pump of pressurized water reactor nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756251U true CN202756251U (en) | 2013-02-27 |
Family
ID=47735436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220393916 Expired - Lifetime CN202756251U (en) | 2012-08-09 | 2012-08-09 | Electric auxiliary water-feeding pump of pressurized water reactor nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756251U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351207A (en) * | 2015-12-15 | 2016-02-24 | 上海电气凯士比核电泵阀有限公司 | Charging pump |
| CN107514384A (en) * | 2017-09-27 | 2017-12-26 | 上海阿波罗机械股份有限公司 | Emergency feedwater pump |
-
2012
- 2012-08-09 CN CN 201220393916 patent/CN202756251U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351207A (en) * | 2015-12-15 | 2016-02-24 | 上海电气凯士比核电泵阀有限公司 | Charging pump |
| CN107514384A (en) * | 2017-09-27 | 2017-12-26 | 上海阿波罗机械股份有限公司 | Emergency feedwater pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
|
| CX01 | Expiry of patent term |