CN101865244B - Quasi-planetary speed reduction box of cooling water pump of nuclear power station - Google Patents

Quasi-planetary speed reduction box of cooling water pump of nuclear power station Download PDF

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Publication number
CN101865244B
CN101865244B CN2010101353642A CN201010135364A CN101865244B CN 101865244 B CN101865244 B CN 101865244B CN 2010101353642 A CN2010101353642 A CN 2010101353642A CN 201010135364 A CN201010135364 A CN 201010135364A CN 101865244 B CN101865244 B CN 101865244B
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CN
China
Prior art keywords
quasi
planetary
speed reduction
nuclear power
water pump
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CN2010101353642A
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Chinese (zh)
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CN101865244A (en
Inventor
吴声震
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吴声震
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Priority to CN2010101353642A priority Critical patent/CN101865244B/en
Publication of CN101865244A publication Critical patent/CN101865244A/en
Application granted granted Critical
Publication of CN101865244B publication Critical patent/CN101865244B/en

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Abstract

The invention relates to the technical field of speed reduction of nuclear power stations, in particular to a quasi-planetary speed reduction box of a cooling water pump of the nuclear power station. The cooling water pump of the Daya Bay nuclear power station adopts a planetary gear reducer of Rolls-Royce Ltd., UK. The design service life is 100,000 hours. Tooth breaking exists in a planetary gear after the accumulated running time of a reduction gear box of a No.2 circulation water pump of a No.1 unit achieves 44000 hours. Therefore, the design of the speed reduction box of the water pump with the high reliability has very important economic valve for ensuring the normal running of the nuclear power station. The quasi-planetary speed reduction box is technically characterized by adopting a single-stage quasi-planetary structure which carries out split twice in a plane: (input) central gear-two second intermediate wheels-(output) inner gear ring. As a planetary carrier is fixed during the quasi-planetary transmission, the vibration is smaller than that during the planetary transmission. The power split number is 2 multiplied by 4. The quasi-planetary speed reduction box has the benefits of straight teeth and quality adjustment of the inner gear ring, small machining process difficulty, low cost, and large carrying capacity.

Description

Quasi-planetary speed reduction box of cooling water pump of nuclear power station
[technical field]
The present invention relates to nuclear power station braking technique field, a kind of quasi-planetary speed reduction box of cooling water pump of nuclear power station.
[background technique]
4 recirculated cooling water pumps are equipped with in Daya Bay nuclear power plant, and what between motor and water pump, install is the planetary gear reducer that Britain ROLLS ROYCE LTD. produces.This plane table thermoconductivity meter comprises a sun gear, 4 planet wheels and two ring gears, the transmission of symmetric double helical teeth.The specified mechanical output of plane table thermoconductivity meter is 4498kW, maximum delivered moment 266353N.m, and 744r/min, specified output speed 161r/min, reduction speed ratio i=4.62, design service life 100,000 hours are changeed in specified input.On January 9th, 1998, Daya Gulf Nuclear powerStand No. 1 unit under the state of power operation, No. 2 circulating water pump reduction gear box planetary pinion broken teeths take place suddenly cause the pump group to be shut down, power falls in generator set Accident, cause heavy economic losses to the power station.France nuclear power plant uses and Daya Gulf Nuclear powerThe similar planetray reducer of standing.Broken teeth takes place in this type gear in running AccidentCumulative Elapsed Time be 63000 hours, and Daya Gulf Nuclear powerThe station is 44000 hours.Therefore, designed for greater reliability water pump speed reducer guarantees that the normal operation of nuclear power station has economic value of the utmost importance.
[summary of the invention]
The object of the invention is to provide a kind of highly reliable, in light weight, quasi-planetary speed reduction box of cooling water pump of nuclear power station that the manufacturing process difficulty is lower than external type.
Technological scheme: because reduction speed ratio is less, thereby be employed in the single-stage quasi-planet structure of carrying out twice shunting in the plane: (input) central gear-two second idle wheel-(output) ring gear.Because planet carrier is fixed in the quasi-planet transmission, thereby its vibration is less than Gear Planet Transmission.Power dividing number of the present invention is 2 * 4.
Beneficial effect: ring gear straight-tooth, modified, the machining difficulty is little; Eight shunting gear diameters are little, thereby accuracy of manufacturing is prone to just protecting, difficulty is little; Speed reducer is in light weight, low cost of manufacture and bearing capacity are big.
Attach: the comparison of the present invention and existing type
Type Z a-Z c-(Z d)-Z b Reduction speed ratio i Modulus m Divide fluxion np Facewidth b
The present invention (standard) 20-18-21-92 4.60 10.0 4×2 100
Existing type 23-29-81 4.52 14.0 4 100
(annotate: calculating is according to condition K A=1.0, S H=1.20, S F=1.50)
[description of drawings] Fig. 1. embodiment of the invention structural representation
[embodiment]
Below in conjunction with accompanying drawing the present invention is encyclopaedized:
With reference to Fig. 1. a kind of quasi-planetary speed reduction box of cooling water pump of nuclear power station, by support 1, ring gear 2, there won't be any problem star-wheel 4, central shaft gear 5, quasi-planet frame 7, output shaft 10 and end cap 6 are formed, said quasi-planet frame 7 is fixed on support 1 end face, it is characterized in that:
3, two second idle wheel numbers of teeth of two second idle wheels, identical, the symmetrical mounting of modulus are arranged between said there won't be any problem star-wheel 4 and the ring gear 2, the branch fluxion are doubled, improved bearing capacity,
Said central shaft gear 5, there won't be any problem star-wheel 4, second idle wheel 3 and ring gear 2 all place on the same plane; Constitute single-stage driving, said ring gear 2 cylindrical external spliness and output shaft 10 cylinder endoporus internal splines are slidingly connected, and disassemble or assemble are convenient; Can forward and reversely assemble; Improved the working life of ring gear, the spline sideshake is beneficial to shunting and all carries
The block bearing 8,9 of said output shaft 10 places quasi-planet frame 7 and support 1 endoporus respectively, thereby axial length is short, has reduced the installing space of unit.
Described quasi-planetary speed reduction box of cooling water pump of nuclear power station is characterized in that: there won't be any problem star-wheel 4 is four, and second idle wheel 3 is eight, and the branch fluxion is doubled, and has improved bearing capacity.
The foregoing description is to explanation of the present invention, is not to qualification of the present invention, any scheme after the simple transformation of the present invention is all belonged to protection scope of the present invention

Claims (2)

1. quasi-planetary speed reduction box of cooling water pump of nuclear power station; By support (1), ring gear (2), there won't be any problem star-wheel (4), central shaft gear (5), quasi-planet frame (7), output shaft (10) and end cap (6) are formed; Said quasi-planet frame (7) is fixed on support (1) end face; It is characterized in that: between said there won't be any problem star-wheel (4) and the ring gear (2) two second idle wheels (3) are arranged; Two second idle wheel numbers of teeth, identical, the symmetrical mounting of modulus, said central shaft gear (5), there won't be any problem star-wheel (4), second idle wheel (3) and ring gear (2) all place on the same plane, constitute single-stage driving; Said ring gear (2) cylindrical external splines and output shaft (10) cylinder endoporus internal spline are slidingly connected, and the block bearing of said output shaft (10) (8,9) places quasi-planet frame (7) and support (1) endoporus respectively.
2. quasi-planetary speed reduction box of cooling water pump of nuclear power station according to claim 1 is characterized in that: there won't be any problem star-wheel (4) is four, and second idle wheel (3) is eight.
CN2010101353642A 2010-03-01 2010-03-01 Quasi-planetary speed reduction box of cooling water pump of nuclear power station CN101865244B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101353642A CN101865244B (en) 2010-03-01 2010-03-01 Quasi-planetary speed reduction box of cooling water pump of nuclear power station

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Application Number Priority Date Filing Date Title
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CN101865244B true CN101865244B (en) 2012-09-05

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102996718A (en) * 2012-09-11 2013-03-27 吴小杰 Bearing grease lubricated NGW quasi planetary transmission device
CN103089927B (en) * 2012-11-03 2016-04-13 吴小杰 Bearing grease lubrication nuclear power station coolant pump quasi-planetary speed reduction box
CN104074926B (en) * 2014-07-01 2016-05-04 北京航空航天大学 Novel GTF aerial engine fan main reducing gear
CN104309473A (en) * 2014-10-08 2015-01-28 上海中科深江电动车辆有限公司 Planet speed reducer assembly for electric vehicle and electric vehicle
CN105156653A (en) * 2015-10-26 2015-12-16 陈伟 Differential planet two-way output pile driver speed reducer with oil temperature alarm function
CN105387189A (en) * 2015-10-26 2016-03-09 陈伟 Oil temperature alarming cycloid bidirectional output pile machine reduction box
CN106382340B (en) * 2016-10-21 2018-11-09 张玉国 A kind of high-speed high-power coaxial speed reducer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2604571Y (en) * 2002-04-18 2004-02-25 尹万春 External engagement epicyclic train motion mechanism
CN101539187A (en) * 2008-05-15 2009-09-23 吴小杰 Megawatt ten-shunt wind power generation speed increasing box
CN101581351A (en) * 2009-06-23 2009-11-18 吴声震 Novel planetary reduction gear

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1514915A (en) * 2001-06-13 2004-07-21 福地一义 Rotation transmitting device and hydraulic drive device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2604571Y (en) * 2002-04-18 2004-02-25 尹万春 External engagement epicyclic train motion mechanism
CN101539187A (en) * 2008-05-15 2009-09-23 吴小杰 Megawatt ten-shunt wind power generation speed increasing box
CN101581351A (en) * 2009-06-23 2009-11-18 吴声震 Novel planetary reduction gear

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Address after: 225401 Taixing, Sichuan Province, North Sichuan Road, No. 88, No.

Patentee after: Wu Shengzhen

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Address after: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118

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Patentee before: Wu Shengzhen

Effective date of registration: 20170414

Address after: Northern Nantou Langfang city village 065700 household in Hebei Province, Bazhou City Development Zone on the west side of Jingkailu

Patentee after: Hebei Tang mud pump technology Co., Ltd.

Address before: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118

Patentee before: Guangdong Gaohang Intellectual Property Operation Co., Ltd.

CB03 Change of inventor or designer information

Inventor after: Li Zhiyi

Inventor before: Wu Shengzhen

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Granted publication date: 20120905

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