CN202883450U - Shaft seal pump model of nuclear power station - Google Patents
Shaft seal pump model of nuclear power station Download PDFInfo
- Publication number
- CN202883450U CN202883450U CN 201220579024 CN201220579024U CN202883450U CN 202883450 U CN202883450 U CN 202883450U CN 201220579024 CN201220579024 CN 201220579024 CN 201220579024 U CN201220579024 U CN 201220579024U CN 202883450 U CN202883450 U CN 202883450U
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- Prior art keywords
- shaft seal
- pump
- nuclear power
- power station
- model
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a shaft seal pump model of a nuclear power station. A motor portion of the shaft seal pump model of the nuclear power station comprises fly wheels connected by a motor bearing, a thrust bearing and a motor body, wherein the fly wheels, the thrust bearing and the motor body are arranged from top to bottom. A hydraulic machinery portion comprises a No.3 shaft seal, a No.2 shaft seal and a No.1 shaft seal, wherein the No.3 shaft seal, the No.2 shaft seal and the No.1 shaft seal are arranged from top to bottom and a pump outlet and a pump inlet and a pump shell are arranged on the bottom of the hydraulic machinery portion. One third of the shaft seal pump model of the nuclear power station is integrally sectioned, and the shaft seal pump model of the nuclear power station is vertically arranged on a pedestal. The shaft seal pump model of the nuclear power station is simplified on the premise that the shaft seal pump model of the nuclear power station is capable of reflecting the main structure of a shaft seal pump and the procedure of shaft seal, and due to the fact that one third of the shaft seal pump model of the nuclear power station is sectioned, an audience can understand the working principle and the main structure of the shaft seal pump model of the nuclear power station clearly and vividly.
Description
Technical field
The utility model relates to a kind of model of showing nuclear power station shaft seal pump working principle and main structure thereof.
Background technique
Reactor main coolant pump (main pump) is " heart " of reactor.When the main system water-filling, utilize main pump to catch up with gas; Before reactor startup, utilize the main pump circulation to heat up, reach 280 ℃ of conditions of reactor startup; When normal reactor operation, freezing mixture is flowed out by reactor and flows to vaporizer through main pipe, and heat is passed to the feedwater of secondary circuit side, and then sends reactor back to by main pump and circulate.Large flywheel on the main pump motor keeps suitable inertia to increase the main pump coasting time, and the reactor fuel element is unlikely when guaranteeing the loss of power accident burns.Main pump is one of the capital equipment of reactor coolant loop and equipment of pressure boundary.Main pump is divided into glandless motor pump and shaft seal pump two classes, and along with the raising to npp safety and Economy requirement, and for adapting to the requirement of large capacity unit, shaft sealing pump technology reaches its maturity.It adopts conventional cage type induction motor, cost, and efficient improves.The efficient of shaft sealing pump is generally high by 10% to 30% than canned motorpump; Motor section divides installing a very heavy flywheel, thereby has greatly improved the running down performance of unit, has improved the Security of reactor core when station blackout accident occurs; The shaft sealing technology can equally strictly be controlled leakage rate, and the leakage rate of containment is controlled at 200cm
3About/h; Easy to maintenance, axle sealing structure is only changed and is needed about ten hours.
Shaft seal pump is comprised of hydraulic machinery, motor, gland seal assembly three parts, and hydraulic machinery mainly comprises pump case, impeller, suction honeycomb duct and Diffuser, pump bearing, thermodynamic barrier assembly, entrance and exit adapter, flange, pump shaft etc.; Motor comprises bearing, flywheel, anti-reverse-rotation device, stator air-cooler, rotor, stator, motor shaft etc.; Gland seal assembly is provided with No. 1, No. 2, No. 3 sealings.Its complex structure, working principle is more abstract, lacks intuitively teaching means, is difficult to allow the people understand in Popular Science Education.How simplifying literary writing by leaving out superfluous words on the basis of reaction main structure and flow process, allow spectators understand its working principle and main structure thereof clear and intuitively, is the problem that scientific and technological model making will be faced.
Summary of the invention
In order to solve above-mentioned drawback, technical problem to be solved in the utility model is, a kind of scientific and technological model of showing shaft seal pump working principle and main structure thereof is provided, and makes the learner can understand intuitively corresponding knowledge.In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of nuclear power station shaft seal pump model is characterized in that, this molded motor part comprises flywheel, thrust bearing, the motor body that connects by motor bearings from top to bottom; The hydraulic machinery part comprises No. 3 shaft seals, No. 2 shaft seals, No. 1 shaft seal that connects by pump bearing from top to bottom, and the bottom is pump case and pump discharge and pump intake, and the whole work 1/3 of this model dissects, and integral body places to erect on the pedestal and installs.
The beneficial effects of the utility model are that model structure is arranged on the basis of reflecting shaft seal pump main structure and flow process and simplifies literary writing by leaving out superfluous words, and whole work 1/3 dissects and can allow spectators understand its working principle and main structure thereof clear and intuitively.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Accompanying drawing is the utility model structural representation.
Embodiment
Referring to accompanying drawing, reflect a kind of concrete structure of the present utility model, described nuclear power station shaft seal pump molded motor part comprises from top to bottom by motor upper bearing (metal) 2 is connected flywheel 1, thrust bearing 3, the motor body 4 that connects with the motor lower bearing; The hydraulic machinery part comprises No. 3 shaft seals 13, No. 2 shaft seals 7, No. 1 shaft seal 8 that connects by pump bearing 6 from top to bottom, and the bottom is pump case 14 and pump discharge 9 and pump intake 10, and the whole work 1/3 of this model dissects, and integral body places to erect on the pedestal 11 and installs.
Claims (1)
1. a nuclear power station shaft seal pump model is characterized in that, this molded motor part comprises flywheel, thrust bearing, the motor body that connects by motor bearings from top to bottom; The hydraulic machinery part comprises No. 3 shaft seals, No. 2 shaft seals, No. 1 shaft seal that connects by pump bearing from top to bottom, and the bottom is pump case and pump discharge and pump intake, and the whole work 1/3 of this model dissects, and integral body places to erect on the pedestal and installs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579024 CN202883450U (en) | 2012-11-06 | 2012-11-06 | Shaft seal pump model of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220579024 CN202883450U (en) | 2012-11-06 | 2012-11-06 | Shaft seal pump model of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883450U true CN202883450U (en) | 2013-04-17 |
Family
ID=48074884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220579024 Expired - Lifetime CN202883450U (en) | 2012-11-06 | 2012-11-06 | Shaft seal pump model of nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448367A (en) * | 2014-08-19 | 2016-03-30 | 中国广核集团有限公司 | Method for treating nuclear power station main pump leakage abnormity |
-
2012
- 2012-11-06 CN CN 201220579024 patent/CN202883450U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448367A (en) * | 2014-08-19 | 2016-03-30 | 中国广核集团有限公司 | Method for treating nuclear power station main pump leakage abnormity |
| CN105448367B (en) * | 2014-08-19 | 2017-09-08 | 中国广核集团有限公司 | The processing method of nuclear power station main pump abnormal leakage |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |