CN207082955U - A kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism - Google Patents
A kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism Download PDFInfo
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- CN207082955U CN207082955U CN201720876144.2U CN201720876144U CN207082955U CN 207082955 U CN207082955 U CN 207082955U CN 201720876144 U CN201720876144 U CN 201720876144U CN 207082955 U CN207082955 U CN 207082955U
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- flywheel
- fastener
- motor shaft
- main pump
- nuclear power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
A kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism, including motor shaft and flywheel, one end of the motor shaft is provided with fixing nut through flywheel and motor the tip of the axis, the flywheel is pressed on the motor shaft by the fixing nut, key connection between flywheel and motor shaft, upper and lower side in the middle part of flywheel is respectively embedded into upper conical ring and the inferior pyramidal ring played the role of stopper to flywheel, and upper conical ring and inferior pyramidal ring is sleeved on motor shaft.The motor is vertical mounting structure, and flywheel is fixed on motor-shaft extending, disclosure satisfy that motor at a high speed（6P）Rotary inertia requirement under operating condition, under powering-off state, additionally it is possible to cooling agent is provided for reactor core, so as to ensure the safety of nuclear power station main pump system and reactor core.
Description
Technical field
The utility model belongs to engineering electric motors, and in particular to a kind of nuclear power station main pump vertical machine high reliability flies
Take turns fixed mechanism.
Background technology
Reactor coolant pump（Referred to as " main pump "）It is the most important equipment of cooling system of nuclear power station, its major function is driving
Reactor coolant is circulated in primary Ioops system, and heat transfer caused by reactor core is gone out, and the reliable operating of main pump could be really
Protect the continuous safe operation of nuclear power station.In the case where main pump power-off occurs, reactor emergency shut-down, now pass through the cooling of reactor core
Agent flux can be reduced drastically, and heat transfer is not gone out caused by reactor core, be threatened to the safety belt of reactor.
To ensure to power off the safety of reactor core under operating mode, it is desirable to main pump crew qiting flywheel.Flywheel is a kind of effective energy storage
Part, by setting flywheel on main pump vertical machine, the rotary inertia of main pump unit can be effectively improved, be powered off in main pump
Afterwards, the coasting time of main pump is effectively extended.Higher coolant flow can be kept to take reactor shutdown out of by reactor core
Amount of residual heat afterwards, burning for heap fuel element is avoided, ensure whole reactor core safety.
Meanwhile flywheel, as high speed energy-storage system, rotating speed is high, if fixation is insecure, the safety belt of whole system is come
Hidden danger.Therefore reasonable selection must be carried out to flywheel structure, takes reliable structure to ensure the safety of system.
The main function of motor flywheels is the rotary inertia for increasing motor, and the impact to whole system is reduced during operation
Infringement, ensures the even running of motor.In order to increase the rotary inertia of flywheel, the outside dimension of part flywheel does larger, weight
Amount is very heavy, and how fixing and can easily assembling and disassembling flywheel is that design of electrical motor and workshop assembling must take into consideration and solve the problems, such as.Adopt
There is a weak point with fastener connection or the conventional fastening method such as hot jacket interference, for example assembling and dissembling process is complex, it has not been convenient to
User's on-site maintenance, and motor shaft and processing request at flywheel cooperation are higher, and design and processing are comparatively laborious.
In addition, if flywheel fails with axle interference, flywheel easily falls, then loses it and provide the risk of rotary inertia function；
And during flywheel whereabouts, certain impact is produced to motor lower bearing bracket, produces hidden danger.
Therefore, a kind of safe and reliable flywheel fixed mechanism need to be provided.
Utility model content
The purpose of this utility model is to provide a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism, is somebody's turn to do
Structure fixation is reliable, is connected firmly, is safe for operation, disclosure satisfy that motor at a high speed（6P）Rotary inertia requirement under operating condition,
Under powering-off state, additionally it is possible to cooling agent is provided for reactor core, so as to ensure the safety of nuclear power station main pump system and reactor core.
Based on above-mentioned purpose, the utility model takes following technical scheme：
A kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism, including motor shaft and flywheel, the motor
One end of axle is provided with fixing nut through flywheel and motor the tip of the axis, and the flywheel is pressed on described by the fixing nut
On motor shaft, key connection between flywheel and motor shaft, the upper and lower side in the middle part of flywheel is respectively embedded into what flywheel was played the role of stopper
Upper conical ring and inferior pyramidal ring, upper conical ring and inferior pyramidal ring are sleeved on motor shaft.
Further, first, second, third fastener is circumferentially with the fixing nut, first, second, third is tight
Firmware is and fixing nut threaded connection, first, second, third fastener both pass through fixing nut, and the first fastener end
With flywheel apical grafting, the second fastener end and inferior pyramidal ring apical grafting, the 3rd fastener end are stretched into flywheel, the 3rd fastener and
Flywheel is threadedly coupled.
Preferably, first, second, third fastener is several, and first, second, third fastener surrounds motor
Axle is circumferential uniformly to be laid.
Preferably, first, second, third fastener each at least two.
Relative to existing nuclear power station vertical machine flywheel fixed structure, a kind of nuclear power station main pump vertical machine of the utility model
High reliability flywheel fixed mechanism has advantages below：
One kind as a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism of the utility model is improved, the
One fastener and flywheel lower end apical grafting, prevent flywheel from moving axially；
One kind as a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism of the utility model is improved, on
Conical ring, inferior pyramidal ring and motor shaft are coordinated by slight interference, ensure that upper conical ring, inferior pyramidal ring, flywheel and motor shaft are close
Connection is integral, prevents flywheel from moving radially；
One kind as a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism of the utility model is improved, and is flown
Wheel transmits moment of torsion with motor shaft by key, remains under any operating mode and is connected with motor shaft, realizes rotary inertia function；
One kind as a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism of the utility model is improved, and is led to
Cross fastener and fixing nut three reconnects, it is safe and reliable to ensure that flywheel is fixed.Pump assembly runs well and the scope in permission
During interior hypervelocity, flywheel and motor shaft close-coupled are integral, the overall stability of increase flywheel, so as to ensure the complete of flywheel
Property.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model, wherein, 1. flywheels, 2. fixing nuts, 3. first fasteners, 4.
Two fasteners, 5. keys, 6. motor shafts, 7. the 3rd fasteners, 8. inferior pyramidal rings, 9. upper conical rings.
Embodiment
The technical solution of the utility model is further described in detail below in conjunction with specific embodiment, but the utility model
Protection domain be not limited thereto.
Embodiment 1
As shown in figure 1, a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism, including motor shaft 6 and fly
Wheel 1, one end of the motor shaft 6 are provided with fixing nut 2 through the end of flywheel 1 and motor shaft 6, and the flywheel 1 is by described
Fixing nut 2 is pressed on the motor shaft 6, is connected between flywheel 1 and motor shaft 6 by key 5, the upper and lower side at the middle part of flywheel 1
The upper conical ring 8 and inferior pyramidal ring 9 played the role of stopper to flywheel 1 is respectively embedded into, upper conical ring 8 and inferior pyramidal ring 9 are set with
On motor shaft 6.
Further, the first fastener 3, the second fastener 4, the 3rd fastener 7 are circumferentially with the fixing nut 2,
First fastener 3, the second fastener 4, the 3rd fastener 7 are threadedly coupled with fixing nut 2, the fastening of the first fastener 3, second
Part 4, the 3rd fastener 7 both pass through fixing nut 2, and the end of the first fastener 3 and the apical grafting of flywheel 1, the end of the second fastener 4 and
The apical grafting of inferior pyramidal ring 9, the end of the 3rd fastener 7 are stretched into flywheel 1, and the 3rd fastener 7 and flywheel 1 are threadedly coupled.
First fastener 3, the second fastener 4, the 3rd fastener 7 are several, the first fastener 3, the second fastener
4th, the 3rd fastener 7 is around the circumferential uniformly laying of motor shaft 6.
First fastener 3, the second fastener 4, the 3rd fastener 7 each at least two.
During installation, upper conical ring 9 is enclosed at the shoulder block of the upper end of motor shaft 6 first, key 5 is embedded in the keyway of motor shaft 6
It is interior, flywheel 1 is enclosed on motor shaft 6 along keyway direction, inferior pyramidal ring 8 is then fixed on the lower section of flywheel 1, and use fixing nut
2 tighten, and finally screw in the first fastener 3, the second fastener 4, the 3rd fastener 7 and the end of the first fastener 3 and flywheel 1 and push up
Connect, the end of the second fastener 4 and the apical grafting of inferior pyramidal ring 9（Inferior pyramidal ring 9 is fixed）, the end of the 3rd fastener 7 is stretched into winged
In wheel 1, the first fastener 3 and the 3rd fastener 7 carry out spacing and fixed, the first fastener 3, the second fastener to flywheel 1
4th, the 3rd fastener 7 is four, and three fasteners are fixed together fixing nut 2 and inferior pyramidal ring 9, flywheel 1.
Wherein, upper conical ring 8 and inferior pyramidal ring 9 play the gravity of centering and positioning action, in addition support flying wheel 1, ensure to fly
Wheel 1 is concentric with motor shaft 6, keeps the axially and radially balance of flywheel 1.Key 5 is used for transmitting moment of torsion, realizes the rotary inertia of flywheel 1
Function.The main function of fixing nut 2 is support inferior pyramidal ring 9 and compresses flywheel 1, is come off downwards to prevent flywheel 1；Fastener
The lower end of flywheel 1 is each attached to, fixing nut 2 and flywheel 1 are linked together, and makes flywheel 1, inferior pyramidal ring 9, fixing nut
2 are connected as an entirety.Ensure that whole flywheel 1 is securely fixed on motor shaft 6, prevent the axial direction of flywheel 1, move radially.
As a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism of the utility model, the material of flywheel 1
Material is manufactured using high strength forgings；
As a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism of the utility model, the motor shaft 6
Material is manufactured using steel 40Cr；
As a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism of the utility model, the conical ring material
Material is manufactured using steel 45；
As a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism of the utility model, the fixing nut
2 materials are manufactured using steel 45.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (4)
1. a kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism, including motor shaft and flywheel, it is characterized in that：Institute
The one end for stating motor shaft is provided with fixing nut through flywheel and motor the tip of the axis, and the flywheel is compressed by the fixing nut
On the motor shaft, key connection between flywheel and motor shaft, the upper and lower side in the middle part of flywheel has been respectively embedded into plays stop to flywheel
Upper conical ring and the inferior pyramidal ring of effect, upper conical ring and inferior pyramidal ring are sleeved on motor shaft.
2. nuclear power station main pump vertical machine high reliability flywheel fixed mechanism according to claim 1, it is characterized in that：It is described
First, second, third fastener is circumferentially with fixing nut, first, second, third fastener connects with fixing nut screw thread
Connect, first, second, third fastener both passes through fixing nut, and the first fastener end and flywheel apical grafting, the second fastener end
End and inferior pyramidal ring apical grafting, the 3rd fastener end are stretched into flywheel, the 3rd fastener and flywheel threaded connection.
3. nuclear power station main pump vertical machine high reliability flywheel fixed mechanism according to claim 2, it is characterized in that：The
First, second, third fastener is several, and first, second, third fastener is around the circumferential uniformly laying of motor shaft.
4. nuclear power station main pump vertical machine high reliability flywheel fixed mechanism according to claim 3, it is characterized in that：The
First, second, third fastener each at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720876144.2U CN207082955U (en) | 2017-07-19 | 2017-07-19 | A kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720876144.2U CN207082955U (en) | 2017-07-19 | 2017-07-19 | A kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207082955U true CN207082955U (en) | 2018-03-09 |
Family
ID=61423797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720876144.2U Active CN207082955U (en) | 2017-07-19 | 2017-07-19 | A kind of nuclear power station main pump vertical machine high reliability flywheel fixed mechanism |
Country Status (1)
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| CN (1) | CN207082955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110149025A (en) * | 2019-05-10 | 2019-08-20 | 四川一贝动力科技有限公司 | The integral structure of stored energy mechanism and motor outer rotor |
-
2017
- 2017-07-19 CN CN201720876144.2U patent/CN207082955U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110149025A (en) * | 2019-05-10 | 2019-08-20 | 四川一贝动力科技有限公司 | The integral structure of stored energy mechanism and motor outer rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gu Jipin Inventor after: Wang Mingzheng Inventor after: Yang Kongli Inventor after: Zhao Xianwei Inventor after: Zhao Qiang Inventor after: Guo Lin Inventor after: Cai Hechao Inventor after: Wang Xiaojun Inventor after: Bao Meng Inventor after: Yang Juan Inventor after: Dong Xiangfang Inventor after: Zhai Xiao Inventor after: Li Jinyu Inventor after: Wu Xuandong Inventor after: Pu Enshan Inventor after: Xiao Lili Inventor after: Liu Xiuting Inventor after: Guo Xiaoxian Inventor after: Zhang Jianxin Inventor after: Tian Huajun Inventor after: Chen Shuming Inventor before: Zhao Xianwei Inventor before: Wu Xuandong Inventor before: Zhao Qiang Inventor before: Guo Lin Inventor before: Cai Hechao Inventor before: Wang Xiaojun Inventor before: Bao Meng Inventor before: Yang Juan Inventor before: Dong Xiangfang Inventor before: Li Jinyu |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201224 Address after: 102413 Beifang, Xinzhen, Fangshan District, Beijing Patentee after: China Institute of Atomic of Energy Address before: 312300 Economic Development Zone, Shangyu District, Shaoxing City, Zhejiang Province Patentee before: WOLONG ELECTRIC GROUP Co.,Ltd. Patentee before: WOLONG ELECTRIC NANYANG EXPLOSION PROTECTION GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right |