CN108390495A - Lean out formula upper spider structure - Google Patents
Lean out formula upper spider structure Download PDFInfo
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- CN108390495A CN108390495A CN201810454639.5A CN201810454639A CN108390495A CN 108390495 A CN108390495 A CN 108390495A CN 201810454639 A CN201810454639 A CN 201810454639A CN 108390495 A CN108390495 A CN 108390495A
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- 241000239290 Araneae Species 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 230000009977 dual effect Effects 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims description 10
- 210000003205 muscle Anatomy 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 abstract description 9
- 230000005484 gravity Effects 0.000 abstract description 5
- 239000013535 sea water Substances 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000010612 desalination reaction Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 5
- 238000009827 uniform distribution Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 231100000627 threshold limit value Toxicity 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/06—Bearing arrangements
- F03B11/063—Arrangements for balancing axial thrust
- F03B11/066—Arrangements for balancing axial thrust in vertical axis machines
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention relates to one kind leaning out formula upper spider structure, is made of center bearing bracket part, rack coupling part, outer frame part, slave part, is constructed for six force arm type duals.The present invention can shorten motor height, reduce motor center of gravity, improve vertical asynchronous machine stability, simplify air guide structure, and can preferably keep axial and circumferential rigidity；When seismic acceleration both horizontally and vertically is not more than 0.2g, the present invention can meet shockproof requirements stable operation；In downside, the multiple fan-shaped windows of setting, are easily installed, seal, meet IP55 seal requests；It is not more than 0.82mm in the thrust platform maximum axial deformation of 280 ton hour of maximum thrust, structure of the invention, is less than water conservancy industry 1.5~2.0mm deflection limit values.The present invention is suitable for the vertical asynchronous machine structure of high thrust, is particularly suitable for three generations's nuclear power sea water circulating pump motor 280 tons of support constructions of gross thrust, can be widely used for the industries such as nuclear power, petrochemical industry, sea water desalination.
Description
Technical field
The invention belongs to technical field of motors, and in particular to one kind leaning out formula upper spider structure.
Background technology
The vertical asynchronous machine structure of high thrust is generally suspension type, not only to undertake larger hydraulic thrust and motor weight, also
To shorten motor height as possible so that vertical machine obtains preferable stability.Because hydraulic thrust and rotor weight all act on
In upper spider, such upper spider must axially have good rigidity, radial without support section because of motor generally suspension type,
So that upper spider must have preferable circumferential rigidity.It is neoteric to lean out formula upper spider structure, that is, shorten motor height, and simple
Air guide structure is changed, has been equipped with multiple fan-shaped windows in its test formula part, is easily installed, seals；In 280 ton hour of maximum thrust,
The thrust platform maximum axial deformation of structure of the invention is not more than 0.82mm, is less than water conservancy industry standard SL 321-2005《It is big-and-middle
Type hydrogenerator fundamental technical specifications》1.5~2.0mm of middle Thrust bearing support amount of deflection maximum permissible value.It is general vertical asynchronous
The thrust of motor is less than 50 tons, with the development of three generations's nuclear power technology, water that System in Large Circulating Water Pump is required with vertical asynchronous machine
Thrust is 220 tons, and rotor weight is 60 tons, and total 280 tons of gross thrusts, which are applied to, to be leant out in formula upper spider structure.Nuclear power station is general
In weak Seismic active region addressing, in seldom occur to the activity of macroseism, so lean out formula upper spider structure to meet it is certain
Shockproof requirements, the maximum earthquake horizontal acceleration at the general addressing of three generations's nuclear power is 0.15g, and basic seismic acceleration is
0.075g, it is 0.2g to need to lean out formula upper spider structure to undertake the seismic acceleration of horizontal direction from design angle, is undertaken
The seismic acceleration of vertical direction is 0.2g, and g is the acceleration of gravity of the earth；So leaning out formula upper spider structure must be designed to work as
National standard GB 18306-2001 occur《Earthquake In China moves parameter region figure》When defined seismic (seismal, its structural integrity can be kept
Property.Requirement with three generations's nuclear power to equipment simplicity, high reliability is promoted, and leaning out formula upper spider structure has wide application
Field.
Invention content
The object of the present invention is to provide one kind leaning out formula upper spider structure, and can preferably keep the rigid of axial and circumferential
Degree is greatly shortened the whole height of motor, thereby reduces motor center of gravity, improve the stability of vertical machine.The skill of the present invention
Art scheme：One kind leaning out formula upper spider structure, by center bearing bracket part, rack coupling part, outer frame part, slave part structure
At, the described formula upper spider structure that leans out constructs for six force arm type duals, and upper ring plate (1) is welded on oily cylinder (2), upper ring plate (1) with
It is connect on the upside of connection on the upside of first stud (7), upper ring plate (1) and the second stud (3), upper ring plate (1) connects with upper plate (4) side
It connects；It connect, is connect on the inside of the outer circle and third stud (3) of oily cylinder (2), oily cylinder on the outside of the inner circle of oily cylinder (2) and the first stud (7)
(2) it is welded on middle ring flat-plate (9)；Backing plate (8) is welded on middle ring flat-plate (9), and middle ring flat-plate (9) is welded on the 4th stud (11),
It connect on the upside of middle ring flat-plate (9) and support ring flat-plate (13), is connect on the upside of middle ring flat-plate (9) and the 5th stud (12)；In second stud (3)
It is connect on the outside of side and the 4th stud (11), on the upside of the second stud (3) and outside is connect with upper plate (4), and hanging ring (10) is welded on
It on second stud (3), is connect with outer ring plate (5) on the downside of the second stud (3), on the downside of the second stud (3) and on the upside of lower plate (15)
Connection；4th stud (11) is welded on lower ring plate (14), and support ring flat-plate (13) is connect with the 4th stud (11), supports ring flat-plate
(13) it is welded on lower ring plate (14), the 5th stud (12) is connect with the 4th stud (11), and the 5th stud (12) is welded on lower ring
On plate (14)；It connect, is connect with lower ring plate (14) on the inside of lower plate (15), segment cover with outer ring plate (5) on the outside of lower plate (15)
It connect, is connect with outer ring plate (5) on the outside of sector cover plate (16), two adjacent lower plates with lower ring plate (14) on the inside of plate (16)
(15) it is connect with sector cover plate (16), sector cover plate (16) sink (15) first gap (21) of lower plate；Sample oil pipe (17) with
Oily cylinder (2) connection, sampling oil pipe (17) upside are connect with coupling (18), and coupling (18) is connect with external screw thread water nozzle (19),
It samples and is equipped with the second gap (20) on the upside of middle ring flat-plate (9) on the downside of oil pipe (17), oil level indicator connecting tube (6) is connect with oily cylinder (2)；
First circular arc line (23) is connect with first straight line section (25), and first line segment (25) is connect with the second circular arc line (24), by first
Circular arc line (23), first straight line section (25) and the second circular arc line (24) are sequentially connected the boundary for constituting sector cover plate (16)；Two
First straight line section (25) symmetrically, has angle (26) about center line (35) between two first straight line sections (25)；First circular arc line
(23) first center of circle (33) on center line (35), second center of circle (32) of the second circular arc line (24) on center line (35),
Two first straight line sections (25) intersect at central point (31), and there are third spaces between first center of circle (33) and second center of circle (32)
(27), there are the 4th gaps (34) between second center of circle (32) and central point (31).
The center bearing bracket part of the present invention is mainly responsible for upper spider grease chamber and push system supports function；Rack coupling part
It is mainly responsible for and connects center bearing bracket part and outer frame part, and thrust is conducted to outer frame part；Outer frame portion
Divide to be mainly responsible for and further conducts thrust downwards；Slave part is mainly responsible for upper spider oil groove bottom oil sampling and oil level indicator
Connection.
Center bearing bracket part is mainly responsible for upper spider grease chamber and push system supports function.Upper ring plate (1) is welded on oily cylinder
(2) on, the first stud (7) is welded on the inner circle side of oily cylinder (2), and the first stud (7) welds under upper ring plate (1)；First stud (7)
It is welded on middle ring flat-plate (9) with oily cylinder (2), backing plate (8) circumference uniform distribution 8 is welded on middle ring flat-plate (9)；Middle ring flat-plate (9) weldering
Be connected on the 4th stud (11), 6 the 4th studs (11) are arranged in circumference uniform distribution, set between the 4th stud (11) of each two there are one
Ring flat-plate (13) is supported, welds, is welded with lower ring plate (14) on the downside of pushing out ring plate (13), often with middle ring flat-plate (9) on the upside of pushing out ring plate (13)
The 5th stud (12) is respectively welded in a 4th stud (11) both sides, and circumference is divided into 12 the 5th studs (12) of cloth, and the 5th is vertical
Muscle (12) is welded on lower ring plate (14)；Pressure range (30) is that thrust mainly carries position, by limiting pressure range (30)
Maximum axial displacement, and then ensure water conservancy industry standard SL 321-2005《Large and medium hydro-generator fundamental technical specifications》
In to 1.5~2.0mm of maximum permissible value of Thrust bearing support amount of deflection.
Rack coupling part, which is mainly responsible for, connects center bearing bracket part and outer frame part, and thrust conduct to
Outer frame part.Oily cylinder (2) outer circle, the second stud (3) inside and the 4th stud (11) outside are welded on the inside of second stud (3)
It is linked together by welding；It is welded respectively with upper ring plate (1) and upper plate (4) on the upside of second stud (3), on the outside of upper ring plate (1)
It welds on the inside of upper plate (4), is welded with lower plate (15) on the downside of the second stud (3)；Two adjacent lower plate (15) settings
One sector cover plate (16), sector cover plate (16) inside are welded on the outside of lower ring plate (14), sector cover plate (16) outside and outer shroud
Welding on the inside of plate (5), lower cover (16) sink (15) first gap (21) of lower plate, and hanging ring (10) is welded in the second stud (3).
Outer frame part, which is mainly responsible for, further conducts downwards thrust.Second stud (3) is welded on outer ring plate (5),
It is welded with upper plate (4) on the outside of second stud (3), upper plate (4) is welded on outer ring plate (5).
Slave part is mainly responsible for the connection of upper spider oil groove bottom oil sampling and oil level indicator.In oily cylinder (2) outer circle
Oil level indicator connecting tube (6) is welded in upside, outside the downside of oily cylinder (2) outer circle welding sampling oil pipe (17), sampling oil pipe (17)
Side connects coupling (18), continues to connect external screw thread water nozzle (19) on the outside of coupling (18).
When earthquake horizontal direction acceleration is not more than 0.2g, earthquake vertical direction acceleration is not more than 0.2g, knot of the present invention
Structure meets shockproof requirements；Multiple fan-shaped windows are provided in the lower part for leaning out formula upper spider structure simultaneously, is easily installed, seals；
It is not more than 0.82mm in the thrust platform maximum axial deformation of 280 ton hour of maximum thrust, structure of the invention, is less than water conservancy industry mark
Standard 1.5~2.0mm threshold limit values.
The present invention provides the vertical asynchronous machines of high thrust leaning out formula upper spider structure with one kind, uses six force arm type dual knots
Structure is constructed by the test formula of special setting, can shorten motor height, reduced motor center of gravity, further increase vertical asynchronous
The stability of motor.The present invention is provided with one and carries inclination angle test formula structure, the i.e. lower plate welded on the downside of the second stud (3)
(15) certain inclination angle is carried, such that also serving as wind-guiding effect, and rack can be kept to keep preferable in axial and circumferential
Rigidity.One kind of the present invention leaning out formula upper spider structure, can be not more than in seismic acceleration both horizontally and vertically
When 0.2g, meet requirement of the nuclear power station to equipment and support element antidetonation, multiple fan-shaped windows are set at test, be easily installed,
It seals, meets at fan-shaped window and ensure to reach inside motor《The integrally-built degree of protection of electric rotating machine (IP codes) is classified》
In GB/T 4942.1 IP55 (it is dust-proof, bear any direction spray water without adverse effect) grade specifications, structure of the invention
The deformation of thrust platform maximum axial is not more than 0.82mm, is less than water conservancy industry standard 1.5~2.0mm threshold limit values.The present invention is prominent
Previous vertical asynchronous machine has been broken because using non-test open frame, has caused motor height value excessive, avoids band due to center of gravity is excessively high
Carry out the problem of stability difference, the operational reliability of the vertical asynchronous machine of high thrust can be improved, reduces the complexity for repairing installation.
Description of the drawings
One kind of Fig. 1 present invention leaning out formula upper spider structure structure chart
Fig. 2 is the A-A sectional views of Fig. 1
Fig. 3 is the B-B sectional views of Fig. 2
Fig. 4 is I enlarged view of Fig. 2
Fig. 5 is II enlarged view of Fig. 2
Fig. 6 is 16 enlarged view of item of Fig. 1
Fig. 7 is the 30 maximum thrust axial displacement figure of item of Fig. 2
Specific implementation mode
Fig. 1 is that one kind leaning out formula upper spider structure, by center bearing bracket part, rack coupling part, outer frame part, auxiliary
Part is constituted, and the formula upper spider structure that leans out constructs for six force arm type duals.The present invention leans out formula upper spider structure and is used for maximum
Thrust is in the thrust support structure of 280 tons of circulation-water pump electric machines.
As shown in Figure 1, one kind leaning out formula upper spider structure, oily cylinder 2 and the second stud 3 weld, and upper fixed board 4 is welded on second
On stud 3,3 circumference uniform distribution of the second stud is arranged 6, and 8 circumference uniform distribution of backing plate 8 is welded on pressure range 30, the first stud 7 circle
Zhou Junbu 6 is welded on 2 inner circle of oily cylinder, and the 5th stud 12 is positioned opposite, and 12 circumference of the 5th stud arranges 12 altogether, circumference cloth
12 lower plates 15 are set, wherein 6 lower plates 15 and the second stud 3 weld, 1 segment cover is set between each two lower plate 15
Plate 16.
As shown in Fig. 2, for the A-A sectional views of Fig. 1, upper ring plate 1 is welded on oily cylinder 2, on upper ring plate 1 and the second stud 3
Side is welded, and upper ring plate 1 is welded with 4 side of upper plate, and the first stud 7 is welded on the inside of oily cylinder 2, on upper ring plate 1 and the first stud 7
Side is welded, and the second stud 3 is welded with 2 outside of oily cylinder, and 2 outer circle of oily cylinder is welded with 3 inside of third stud, and oily cylinder 2 is welded on middle ring
On plate 9, upper plate 4 is welded on the second stud 3, the welding hanging ring 10 on the second stud 3, and oil level indicator connecting tube 6 is welded with oily cylinder 2
It connects；Backing plate 8 is welded on middle ring flat-plate 9, and middle ring flat-plate 9 is welded on the 4th stud 11, and middle ring flat-plate 9 is welded with 13 upside of support ring flat-plate
It connects, middle ring flat-plate 9 and 12 upside of the 5th stud are welded；Second stud, 3 inside is welded with 11 outside of the 4th stud, on the second stud 3
Side and outside are welded with upper plate 4, and 3 downside of the second stud is welded with outer ring plate 5,3 downside of the second stud and 15 upside of lower plate
Welding；4th stud 11 is welded on lower ring plate 14, and ring flat-plate 13 and the 4th stud 11 is supported to weld, and support ring flat-plate 13 is welded on down
On ring flat-plate 14, the 5th stud 12 and the 4th stud 11 weld, and the 5th stud 12 is welded on lower ring plate 14；The outside of lower plate 15 with
Outer ring plate 5 welds, and 15 inside of lower plate is welded with lower ring plate 14, and 16 inside of lower cover is welded with lower ring plate 14, outside lower cover 16
Side is welded with outer ring plate 5, and two adjacent lower plates 15 are welded with lower cover 16.
As shown in figure 3, for the B-B sectional views of Fig. 2, a hanging ring 10 is respectively welded in 3 both sides of the second stud.
As shown in figure 4, for I enlarged view of Fig. 2, sampling oil pipe 17 is welded with oily cylinder 2,17 upside of sampling oil pipe with it is external
First 18 take thread fiting mode to connect, and coupling 18 takes thread fiting mode to connect with external screw thread water nozzle 19, sample oil pipe
17 downsides are equipped with the second gap 20 with 9 upside of middle ring flat-plate, and the second gap 20 is 10mm.
As shown in figure 5, for II enlarged view of Fig. 2,16 inside of cover board is welded with lower ring plate 14,16 outside of cover board and outer shroud
Plate 5 welds, and cover board 16 sink 15 first gap 21 of lower plate, and the first gap 21 is 6mm.
As shown in fig. 6, for 16 enlarged view of item of Fig. 1, the first circular arc line 23 is connect with first straight line section 25, first line
Section 25 is connect with the second circular arc line 24, is sequentially connected and is constituted by the first circular arc line 23, first straight line section 25 and the second circular arc line 24
The boundary of sector cover plate 16；Two first straight lines 25 are symmetrical about center line 35, have angle 26 between two first straight line sections 25,
Angle 26 is 26.8 °；On center line 35, second center of circle 32 of the second circular arc line 24 exists in first center of circle 33 of the first circular arc line 23
On center line 35, two first straight line sections 25 intersect at central point 31, and there are thirds between first center of circle 33 and second center of circle 32
Gap 27, third space 27 are 310mm, and there are the 4th gaps 34, the 4th gap 34 between second center of circle 32 and central point 31 is
188mm, the first arc radius 28 are R1309mm, and the second arc radius 39 is R1938mm.
As shown in fig. 7, for the 30 maximum thrust axial displacement figure of item of Fig. 2, of the invention leans out formula upper spider structure total
Thrust is 280 ton hours, and thrust is applied on pressure range 30, the axial deformation of pressure range 30 be from outside to inside 0.6773mm~
0.8173mm, the 30 minimum 0.6773mm of outside axial deformation of pressure range, 30 inside axial deformation of pressure range are up to
0.8173mm is less than water conservancy industry so the maximum axial deformation for leaning out formula upper spider structure of the present invention is not more than 0.82mm
1.5~2.0mm maximum defluxion limit values that standard requires.
Claims (1)
1. one kind leaning out formula upper spider structure, it is characterized in that：By center bearing bracket part, rack coupling part, outer frame part, auxiliary
Part is helped to constitute, the formula upper spider structure that leans out constructs for six force arm type duals, and upper ring plate (1) is welded on oily cylinder (2), upper ring
It connect, is connect on the upside of upper ring plate (1) and the second stud (3), upper ring plate (1) and upper plate on the upside of plate (1) and the first stud (7)
(4) side connects；It is connect on the outside of the inner circle of oily cylinder (2) and the first stud (7), outer circle and third stud (3) inside of oily cylinder (2)
Connection, oily cylinder (2) are welded on middle ring flat-plate (9)；Backing plate (8) is welded on middle ring flat-plate (9), and it is vertical that middle ring flat-plate (9) is welded on the 4th
On muscle (11), it connect on the upside of middle ring flat-plate (9) and support ring flat-plate (13), is connect on the upside of middle ring flat-plate (9) and the 5th stud (12)；Second
It is connect with the 4th stud (11) outside on the inside of stud (3), on the upside of the second stud (3) and outside is connect with upper plate (4), hanging ring
(10) it is welded on the second stud (3), is connect with outer ring plate (5) on the downside of the second stud (3), on the downside of the second stud (3) and bottom
Connection on the upside of plate (15)；4th stud (11) is welded on lower ring plate (14), and support ring flat-plate (13) is connect with the 4th stud (11),
Support ring flat-plate (13) is welded on lower ring plate (14), and the 5th stud (12) is connect with the 4th stud (11), the weldering of the 5th stud (12)
It is connected on lower ring plate (14)；It is connect with outer ring plate (5) on the outside of lower plate (15), on the inside of lower plate (15) even with lower ring plate (14)
It connects, is connect with lower ring plate (14) on the inside of sector cover plate (16), is connect with outer ring plate (5) on the outside of sector cover plate (16), two adjacent
Lower plate (15) connect with sector cover plate (16), sector cover plate (16) sink (15) first gap (21) of lower plate；Sampling oil
Pipe (17) is connect with oily cylinder (2), is connect with coupling (18) on the upside of sampling oil pipe (17), coupling (18) and external screw thread water nozzle
(19) it connects, the second gap (20) is equipped with on the upside of middle ring flat-plate (9) on the downside of sampling oil pipe (17), oil level indicator connecting tube (6) and oil
Cylinder (2) connection；First circular arc line (23) is connect with first straight line section (25), and first line segment (25) connects with the second circular arc line (24)
It connects, is sequentially connected by the first circular arc line (23), first straight line section (25) and the second circular arc line (24) and constitutes sector cover plate (16)
Boundary；Two first straight line sections (25) symmetrically, have angle (26) about center line (35) between two first straight line sections (25)；The
First center of circle (33) of one circular arc line (23) is on center line (35), and second center of circle (32) of the second circular arc line (24) is in center line
(35) on, two first straight line sections (25) intersect at central point (31), exist between first center of circle (33) and second center of circle (32)
Third space (27), there are the 4th gaps (34) between second center of circle (32) and central point (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454639.5A CN108390495B (en) | 2018-05-14 | 2018-05-14 | Projecting type upper rack structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454639.5A CN108390495B (en) | 2018-05-14 | 2018-05-14 | Projecting type upper rack structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108390495A true CN108390495A (en) | 2018-08-10 |
| CN108390495B CN108390495B (en) | 2023-12-01 |
Family
ID=63070859
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810454639.5A Active CN108390495B (en) | 2018-05-14 | 2018-05-14 | Projecting type upper rack structure |
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| Country | Link |
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| CN (1) | CN108390495B (en) |
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| CN107086743A (en) * | 2017-05-22 | 2017-08-22 | 哈尔滨电气动力装备有限公司 | HTGR nuclear power factory owner's cooling blower motor of oil lubrication |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8599513B1 (en) * | 2012-05-30 | 2013-12-03 | Nidec Corporation | Bearing mechanism, motor, and disk drive apparatus |
| CN102969835A (en) * | 2012-12-14 | 2013-03-13 | 哈尔滨电气动力装备有限公司 | Main cooling agent pump motor of second-generation nuclear power plant |
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