CN207393495U - Small nuclear power plant core main pump - Google Patents
Small nuclear power plant core main pump Download PDFInfo
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- CN207393495U CN207393495U CN201721203194.0U CN201721203194U CN207393495U CN 207393495 U CN207393495 U CN 207393495U CN 201721203194 U CN201721203194 U CN 201721203194U CN 207393495 U CN207393495 U CN 207393495U
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- nuclear power
- guide blade
- main pump
- core main
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Abstract
The utility model is related to a kind of Small nuclear power plant core main pumps, drainage tube (1) and it is connected with mouth guide vane (2), inlet guide vane (2) is sleeved on axis (12), key (4) is mounted on axis (12), impeller (3) is mounted on shaft end using fastener (5), exit guide blade (6) is mounted on the hub among the entrance and exit of inlet guide vane (2), piston ring (7) is sleeved on exit guide blade (6), piston ring (7) is sleeved on the outlet outer wall of exit guide blade (6) and is contacted with the entrance inner wall of outlet (11), inlet guide vane (2) is fixed on the lower part of motor (9), it is connected at the outer circle of motor (9) with pump case (10).The utility model can be realized under the driving of driving device motor makes reactor coolant be cycled with defined flow, and the heat that reactor core generates is passed to secondary circuit by steam generator.The pump is the component of reactor coolant loop pressure boundary, can ensure the structural intergrity of reactor coolant pressure boundary.
Description
Technical field：The utility model is related to Small nuclear power plants with a seed nucleus main pump.
Background technology：Nuclear reactor power device of the International Atomic Energy Agency (IAEA) electrical power below 300 megawatts
It is defined as " small-sized heap ", nuclear reactor power device of the generated output between 300-600 megawatts is defined as " medium-sized heap ", the two
It is referred to as " middle-size and small-size nuclear reactor ", English abbreviation SMR (Small and Medium-sized Reactors).Middle-size and small-size core
Reactor and large nuclear-power above have their own characteristics each in technology and application, complement one another.To meet different demands, IAEA actively encourages to send out
Open up the small-sized heap of modular of safe and reliable, viable economically and anti-nuclear proliferation.The Nuclear Power developed country is in development large nuclear-power
While unit, also all in actively research and development multipurpose modular Small reactor, these small-sized heaps include light water reactor, high temperature gas-cooled
Heap, liquid metal cooled fast neutron pile, molten salt reactor etc..
In recent years, external many nuclear power technology developed countries include the U.S., Russia, Argentina, South Korea, Japan, South Africa
States is waited all to be directed to researching and developing security good and have the middle-size and small-size multipurpose reactor of economic competitiveness, is mainly used for generating electricity,
Thermoelectricity, water power alliance and other specific uses etc. can be also taken into account, a part of middle-size and small-size reactor has been enter into the engineering research stage.
External such pump in recent years drives to maturity stage soon.Many nuclear power technology developed countries be directed to researching and developing security it is good,
There is the middle-size and small-size multipurpose reactor of economic competitiveness again.
At present, the single coastal large nuclear-power unit of development cannot adapt to the requirement of the wide model application of nuclear energy completely.From nuclear power
The market demand sees that the supply of electric power of developed country and medium-developed country has tended to saturation.Following nuclear power demand will gradually turn
Country and the hinterland of the developing countries and energy shortage are moved on to, these countries and regions are by geographical location, geology, gas
As, the limitation of water source, economic capability and net capacity, it is not suitable for building large nuclear-power unit.And the design object of small-sized heap is also
It focuses on the generation that accident is eliminated from root original, eliminates primary Ioops main pipeline, so as to elimination reaction heap cooling system dehydration thing
Therefore and effectively it can reduce off site emergency measure and human intervention when running into emergency episode.At present, since the small cores are anti-
The core main pump for answering the rickle that heap core main pump technology still belongs to blank, especially 100MW at home is even more rare at home.
The content of the invention：The purpose of this utility model be to provide it is a kind of it is simple in structure, performance is stable, reliable, safe small-sized
Used in nuclear power station core main pump.The technical solution of the utility model is：A kind of Small nuclear power plant core main pump, drainage tube (1) and entrance
Guide vane (2) is connected, and inlet guide vane (2) is sleeved on axis (12), and key (4) is mounted on axis (12), and impeller (3) uses fastener
(5) shaft end is mounted on, exit guide blade (6) is mounted on the hub among the entrance and exit of inlet guide vane (2), piston ring (7) set
On exit guide blade (6), piston ring (7) be sleeved on the outlet outer wall of exit guide blade (6) and in the entrance of outlet (11)
Wall contacts, and inlet guide vane (2) is fixed on the lower part of motor (9), is connected at the outer circle of motor (9) with pump case (10).
The ring cavity that the suction inlet of pump is formed between pump case (10) and outlet (11), the outlet of main pump is outlet
(11) and the cavity that is collectively formed of pump case (10).
Entire pump portion shares an axis (12) with motor (9), and axis (12) end is tapered shaft end.
It connects between exit guide blade (6) and inlet guide vane (2), is connected between drainage tube (1) and inlet guide vane (2).
Two piston rings (7) are provided between exit guide blade (6) and outlet (11), which is in cloth arranged side by side
It puts.
The cavity lower end of exit guide blade (6) is mounted with plug screw (8).
The course of work of the utility model is：Ring cavity of the suction inlet of pump between pump case (10) and outlet (11), row
The cavity formed for the inner cavity of pump case (10) and outlet (11) is exported, pump portion and motor (9) share a shaft, motor
(9) rotate, impeller (3) is sucked medium by suction inlet pipe (1) from press pump shell (10), then passes through inlet guide vane (2)
Outlet after increasing energy, gets to medium in outlet (11) after exit guide blade (6) rectification into impeller (3), enters back into pump
The exit portion of shell (10) is discharged in main pipeline.
The technological merit of the utility model is：
1st, the pump case of the core main pump of the utility model is the pressure vessel wall of syphon shape, and bearing capacity is strong, is that reactor is cold
But the component on agent system pressure border can ensure the integrality of reactor coolant pressure boundary system structure.
2nd, the inlet guide vane of the core main pump of the utility model is to open rectified action, and opens the work in liquid transition direction
With the big change of 180 degree has occurred in flow direction of the liquid inside inlet guide vane.
3rd, the core main pump of the utility model be by pump portion and driving device it is separately installed after the completion of, then whole be inserted into
In pressure vessel, install and repair and is more convenient.
4th, the core Structure of RCP feature of the utility model is that pump and motor share an axis, reduces coupler structure, makes
Pump configuration is compacter, and also reduces vibration.
5th, the core main pump feature of the utility model is as shown in Figure 1, in exit guide blade and the inner cylinder of pressure vessel double layer sleeve barrel
Between be provided with two piston rings, effect one is to have certain gap between exit guide blade and two layers of sleeve of pressure vessel
And it is easily installed；Second is that in order to ensure to come into full contact between entire stator component, the inner cylinder for playing two layers of sleeve of pressure vessel is high
Press the sealing function between chamber and exit guide blade outer low pressure chamber；Third, in the inner cylinder and inlet guide vane of two layers of sleeve of pressure vessel
Between play certain Auxiliary support, make stator form an overall structure.Two piston rings are in the feelings of a failure simultaneously
Another can equally play the role of above-mentioned three under condition, be the structure with double insurance.
6th, it is pump portion the characteristics of the core main pump of the utility model without axle envelope.
7th, it is cavity inside exit guide blade to be the characteristics of the core main pump of the utility model, so saves material, and subtracts
The light weight of pump assembly.
8th, it is that motor shaft is tapered shaft end the characteristics of the core main pump of the utility model, is easy to the installation and removal of impeller.
Description of the drawings：
Fig. 1 is the utility model core Structure of RCP schematic diagram
Specific embodiment：
As shown in Figure 1, a kind of Small nuclear power plant core main pump, drainage tube 1 and it is connected with mouth guide vane 2, inlet guide vane 2 is set with
On axis 12, key 4 is mounted on axis 12, and impeller 3 is mounted on shaft end using fastener 5, and exit guide blade 6 is mounted on inlet guide vane 2
Entrance and exit among hub on, piston ring 7 is sleeved on exit guide blade 6, and piston ring 7 is sleeved on outside the outlet of exit guide blade 6
It is contacted on wall and with the entrance inner wall of outlet 11, inlet guide vane 2 is fixed on the lower part of motor 9, at the outer circle of motor 9 and pump case
10 are connected.
The ring cavity that the suction inlet of pump is formed between pump case 10 and outlet 11, the outlet of main pump is outlet 11 and pump
The cavity that shell 10 is collectively formed.
Entire pump portion shares an axis 12 with motor 9, and 12 end of axis is tapered shaft end.
It connects between exit guide blade 6 and inlet guide vane 2, is connected between drainage tube 1 and inlet guide vane 2.
Two piston rings 7 are provided between exit guide blade 6 and outlet 11, which is in be arranged in juxtaposition.
The cavity lower end of exit guide blade 6 is mounted with plug screw 8.
Claims (6)
1. a kind of Small nuclear power plant core main pump, it is characterized in that：Drainage tube (1) is connected with exit guide blade (2), inlet guide vane (2)
It is sleeved on axis (12), key (4) is mounted on axis (12), and impeller (3) is mounted on shaft end, exit guide blade (6) using fastener (5)
On the hub among the entrance and exit of inlet guide vane (2), piston ring (7) is sleeved on exit guide blade (6), piston ring
(7) it is sleeved on the outlet outer wall of exit guide blade (6) and is contacted with the entrance inner wall of outlet (11), inlet guide vane (2) is fixed on
The lower part of motor (9) is connected with pump case (10) at the outer circle of motor (9).
2. a kind of Small nuclear power plant core main pump according to claim 1, it is characterized in that：The suction inlet of pump is pump case (10)
The ring cavity formed between outlet (11), the outlet of main pump are the cavity that outlet (11) and pump case (10) are collectively formed.
3. a kind of Small nuclear power plant core main pump according to claim 1, it is characterized in that：Entire pump portion and motor (9)
An axis (12) is shared, axis (12) end is tapered shaft end.
4. a kind of Small nuclear power plant core main pump according to claim 1, it is characterized in that：Exit guide blade (6) and entrance are led
Leaf connects between (2), is connected between drainage tube (1) and inlet guide vane (2).
5. a kind of Small nuclear power plant core main pump according to claim 1, knot sign are：In exit guide blade (6) and outlet
Two piston rings (7) are provided between pipe (11), which is in be arranged in juxtaposition.
6. a kind of Small nuclear power plant core main pump according to claim 1, it is characterized in that：Under the cavity of exit guide blade (6)
End is mounted with plug screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721203194.0U CN207393495U (en) | 2017-09-19 | 2017-09-19 | Small nuclear power plant core main pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721203194.0U CN207393495U (en) | 2017-09-19 | 2017-09-19 | Small nuclear power plant core main pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393495U true CN207393495U (en) | 2018-05-22 |
Family
ID=62404629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721203194.0U Active CN207393495U (en) | 2017-09-19 | 2017-09-19 | Small nuclear power plant core main pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393495U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575394A (en) * | 2017-09-19 | 2018-01-12 | 哈尔滨电气动力装备有限公司 | Small nuclear power plant core main pump |
| CN109114006A (en) * | 2018-10-22 | 2019-01-01 | 江门市地尔汉宇电器股份有限公司 | A kind of water pump with heating function |
| CN109340184A (en) * | 2018-09-21 | 2019-02-15 | 中广核研究院有限公司 | A kind of nuclear reactor coolant pump and its anti-backflow pump shell structure |
-
2017
- 2017-09-19 CN CN201721203194.0U patent/CN207393495U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575394A (en) * | 2017-09-19 | 2018-01-12 | 哈尔滨电气动力装备有限公司 | Small nuclear power plant core main pump |
| CN109340184A (en) * | 2018-09-21 | 2019-02-15 | 中广核研究院有限公司 | A kind of nuclear reactor coolant pump and its anti-backflow pump shell structure |
| CN109114006A (en) * | 2018-10-22 | 2019-01-01 | 江门市地尔汉宇电器股份有限公司 | A kind of water pump with heating function |
| CN109114006B (en) * | 2018-10-22 | 2023-12-12 | 汉宇集团股份有限公司 | Water pump with heating function |
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