CN204985055U - Nuclear main pump impeller - Google Patents
Nuclear main pump impeller Download PDFInfo
- Publication number
- CN204985055U CN204985055U CN201520713238.9U CN201520713238U CN204985055U CN 204985055 U CN204985055 U CN 204985055U CN 201520713238 U CN201520713238 U CN 201520713238U CN 204985055 U CN204985055 U CN 204985055U
- Authority
- CN
- China
- Prior art keywords
- impeller
- main pump
- design
- stator
- nuclear main
- Prior art date
- 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 - Fee Related
Links
- 238000005242 forging Methods 0.000 abstract description 2
- 238000003801 milling Methods 0.000 abstract description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 1
- 239000002826 coolant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000659 freezing mixture Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 240000004272 Eragrostis cilianensis Species 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a nuclear main pump impeller, for axial -flow type open impeller, the design has five pieces of blades, and wheel hub is equipped with the cavity simultaneously in the wheel hub, guarantee to link with rotation driving device. This impeller is formed by the whole digital control processing system of milling of stainless steel forging. This nuclear main pump impeller need could constitute the hydraulic component work that the nuclear main pump is complete under impeller nut, pump case, bead cover, the stator combined action having. This nuclear main pump impeller's design becomes not only lays the basis for the design of main pump hydraulic component, and also more comprehensive realization of main pump is independently changed the design and is provided the core guarantee.
Description
Technical field: the utility model relates to a kind of core main pump impeller.For the shaft seal formula core main pump of hundred one-tenth multikilowatt units.
Background technique:
Nuclear power plant reactor coolant system (RCP) the i.e. major loop of one loop of nuclear power station, its major function is that circulate coolant is flowed, the heat that nuclear fission in reactor core produces is transferred to secondary circuit by vaporizer, cools reactor core simultaneously, prevent fuel element from burning or damage.
Core main pump is the abbreviation of nuclear power plant reactor coolant pump, is the heart equipment of nuclear power station.For driving freezing mixture at RCP system internal circulation flow, continuously the heat produced in reactor core is passed to the feedwater of evaporation vapour second side.Main pump guarantees have the freezing mixture of suitable flow to flow through reactor core, is greater than permitted value to maintain departure from nucleate boiling ratio.
The domestic shaft seal formula core main pump technology not having hundred one-tenth multikilowatt units of autonomous Design at present, the shaft seal formula core main pump of hundred one-tenth multikilowatt units of existing domestic nuclear power plant is all purchase external core main pump, and three generations's shielding core main pump of domestic introduction is not also really applied to nuclear power plant.
Summary of the invention: the purpose of this utility model is to provide that structure is simple, stable performance, reliable, safe a kind of blade wheel structure.The technical solution of the utility model is: a kind of core main pump impeller, adopt axial flow unshrouded impeller (1) with five pieces of impeller blades (1-2), each impeller blade (1-2) is uniform all to be in the same direction centered around on impeller hub (1-1), jointly runner is formed with impeller hub (1-1), pump case (3) bottom is with entrance (6), pump case (3) top is with exhaust port (7), impeller nut (2) is equipped with in the front end of impeller (1), impeller (1) is connected with stator (5), impeller chimney (4) is connected with stator (5), impeller chimney (4) by impeller chimney in inside, whole impeller nut (2), impeller (1) and stator (5), it is inner that the assembly that impeller chimney (4) forms is arranged on pump case (3).
Working procedure of the present utility model is: as shown in Figure 4, this core main pump impeller (1) be need have impeller nut (2), pump case (3, impeller chimney (4), stator (5), acting in conjunction under just workable.Drive unit rotates, impeller (1) rotates, the suction port (6) of medium from pump case (3) is sucked, medium is after impeller (1) energy increases, pass to stator (5), after stator (5) rectification, finally by outside exhaust port (7) excavationg pump of pump case (3).
Technological merit of the present utility model and good effect are:
1, a kind of core main pump impeller of the present utility model, as shown in Figure 1, this blade wheel structure is simple, and adopt the milling of digital control processing solid forging to form, machining accuracy is guaranteed.
2, a kind of core main pump impeller of the present utility model, as shown in Figure 1, efficiency is high, adopts the stainless steel material of high temperature resistant cavitation-resistance to make, durable.
3, be provided with cavity in wheel hub, ensure that the inner drive unit with rotating is connected and be connected to enough spaces, also reduce the weight of whole rotor simultaneously.
4, a kind of core main pump impeller of the present utility model, design condition is very harsh.Design pressure is 25.8MPa, and nominal operating temperature is 293 degrees Celsius, and rated operating pressures is 15.16MPa, rated flow 23790m
3/ h, rated head is 97.2 (± 1.5%) m.
Accompanying drawing illustrates:
Fig. 1 is the utility model blade wheel structure schematic diagram
Fig. 2 is the right side view of the utility model impeller
Fig. 3 is the left side view of the utility model impeller
Fig. 4 is the fundamental diagram of the utility model impeller
Embodiment:
As shown in Figure 1: a kind of core main pump impeller, adopt axial flow unshrouded impeller 1 with five pieces of impeller blade 1-2, each impeller blade 1-2 is uniform all to be in the same direction centered around on impeller hub 1-1, jointly runner is formed with impeller hub 1-1, as shown in Figure 4, pump case 3 bottom is with entrance 6, pump case 3 top is with exhaust port 7, impeller nut 2 is equipped with in the front end of impeller 1, impeller 1 is connected with stator 5, impeller chimney 4 is connected with stator 5, impeller chimney 4 by impeller chimney in inside, whole impeller nut 2, impeller 1 and stator 5, it is inner that the assembly that impeller chimney 4 forms is arranged on pump case 3.
As shown in Figure 2 and Figure 3, impeller blade 1-2 is curvilinerar figure, bends to arcuation.
As shown in Figure 1, impeller blade 1-2 is designed to curvilinerar figure, bends to arcuation.And wheel hub 1-1 inner chamber is designed to cavity structure.
Claims (3)
1. a core main pump impeller, it is characterized in that: adopt axial flow unshrouded impeller (1) with five pieces of impeller blades (1-2), each impeller blade (1-2) is uniform all to be in the same direction centered around on impeller hub (1-1), jointly runner is formed with impeller hub (1-1), pump case (3) bottom is with entrance (6), pump case (3) top is with exhaust port (7), impeller nut (2) is equipped with in the front end of impeller (1), impeller (1) is connected with stator (5), impeller chimney (4) is connected with stator (5), impeller chimney (4) by impeller chimney in inside, whole impeller nut (2), impeller (1) and stator (5), it is inner that the assembly that impeller chimney (4) forms is arranged on pump case (3).
2. core main pump impeller according to claim 1, is characterized in that: impeller blade (1-2) is curvilinerar figure, bends to arcuation.
3. core main pump impeller according to claim 1, is characterized in that: wheel hub (1-1) inner chamber is cavity structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520713238.9U CN204985055U (en) | 2015-09-15 | 2015-09-15 | Nuclear main pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520713238.9U CN204985055U (en) | 2015-09-15 | 2015-09-15 | Nuclear main pump impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985055U true CN204985055U (en) | 2016-01-20 |
Family
ID=55119429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520713238.9U Expired - Fee Related CN204985055U (en) | 2015-09-15 | 2015-09-15 | Nuclear main pump impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204985055U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949087A (en) * | 2017-05-03 | 2017-07-14 | 哈尔滨电气动力装备有限公司 | Band back blade axle envelope formula core main pump impeller structure |
| CN107559233A (en) * | 2017-09-19 | 2018-01-09 | 哈尔滨电气动力装备有限公司 | Core main pump water passage |
| CN111637096A (en) * | 2020-06-08 | 2020-09-08 | 哈尔滨电气动力装备有限公司 | Nuclear reactor coolant pump impeller cover installation and gap adjustment process |
-
2015
- 2015-09-15 CN CN201520713238.9U patent/CN204985055U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949087A (en) * | 2017-05-03 | 2017-07-14 | 哈尔滨电气动力装备有限公司 | Band back blade axle envelope formula core main pump impeller structure |
| CN107559233A (en) * | 2017-09-19 | 2018-01-09 | 哈尔滨电气动力装备有限公司 | Core main pump water passage |
| CN111637096A (en) * | 2020-06-08 | 2020-09-08 | 哈尔滨电气动力装备有限公司 | Nuclear reactor coolant pump impeller cover installation and gap adjustment process |
| CN111637096B (en) * | 2020-06-08 | 2021-09-07 | 哈尔滨电气动力装备有限公司 | Nuclear reactor coolant pump impeller cover installation and gap adjustment process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 |