CN1687616A - Vertical type high speed gear reducer - Google Patents
Vertical type high speed gear reducer Download PDFInfo
- Publication number
- CN1687616A CN1687616A CNA200510011655XA CN200510011655A CN1687616A CN 1687616 A CN1687616 A CN 1687616A CN A200510011655X A CNA200510011655X A CN A200510011655XA CN 200510011655 A CN200510011655 A CN 200510011655A CN 1687616 A CN1687616 A CN 1687616A
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- high speed
- shaft
- casing
- frame group
- pivoted frame
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- 239000003638 chemical reducing agent Substances 0.000 title claims description 37
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 22
- 239000001307 helium Substances 0.000 claims description 20
- 229910052734 helium Inorganic materials 0.000 claims description 20
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 20
- 206010015856 Extrasystoles Diseases 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000314 lubricant Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 230000003137 locomotive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention is the vertical high-speed gear decelerating box, which is characterized in that it adopts the vertical arrangement, and the high-speed shaft goes into the box from the bottom and the low-speed shaft extrudes from the upper end and connects the dynamotor shaft; the decelerating device adopts the planetary wheel series, the sun wheel in the middle circumvolves with the high-speed shaft; the planetary gear is fixed with the low-speed shaft through the first revolving frame group. The bottom of the box is the sealed structure composed of the umbrella oildisk and the platform raised from the box bottom, which can prevent the leakage of the oil. The invention can effective converse the high rotate speed into the low speed to ensure the sealing effects.
Description
Technical field
The invention belongs to high-temperature gas-cooled reactor helium gas turbine power generation system design technical field, the particularly design of speed reducer.
Background technique
In the direct cycle generating system of high-temperature gas-cooled reactor helium gas turbine, energy conversion unit comprises turbine power generation unit, heat transmission equipment and accessory.The turbine power generation unit is made up of helium gas turbine gas compressor, speed reducer, synchronous machine.Speed reducer is one of core apparatus of energy conversion unit, is to realize the key equipment of nuclear energy to the electric energy conversion.The reliability and security of this equipment is related to the normal operation of the direct cycle generating system of high-temperature gas-cooled reactor helium gas turbine.
Rankine cycle (Rankine Cycle) steam turbine generation system is all adopted in high temperature gas cooled reactor prototype research reactor of having built in the world and demonstration power station, and such system is gone the same way by two heating power and forms, and steam generator transmits heat between two loops.Its working principle is as follows: a loop helium flow is heated in the time of cooled reactor through reactor core; The high temperature helium flow is given the water/water vapor of opposite side heat delivered through steam generator one side; By the cooled helium of steam generator, by the pressurization of helium blower, flow into reactor core, form a circuit cycle.In the secondary circuit, the water vapor that steam generator produces enters steam turbine expansion acting; The steam turbine exhaust steam device that is cooled is condensed into water, after the high-pressure water pump pressurization, sends into steam generator, forms the secondary circuit circulation.Steam turbine generation has reduced the quality of the energy that high temperature nuclear reactor provides, generating efficiency not high (being lower than 40%), and system complex causes equipment investment higher.
The developing direction of high temperature gas cooled reactor is to adopt the direct circulating generation of helium gas turbine of Bradenton circulation (Brayton Cycle), and theoretical efficiency is near 50%.Working principle is as follows: high-pressure helium is flowed through and is entered the turbine expansion acting after reactor core is heated, and heat energy is converted into the turbine rotating mechanical energy, drives generator for electricity generation and also drives the gas compressor compressed helium simultaneously; The turbine tail gas stream is given the cold helium in high pressure side with heat delivered after the regenerator low voltage side, enter precooler then and lowered the temperature; The low-temp low-pressure helium is compressed into high-pressure helium after having the unit of calming the anger of inter cooler, the regenerator high pressure side of flowing through is preheated, and then enters reactor core and be heated, and finishes whole circulated helium.In the turbine power generation unit, turbo compressor guarantees its efficient to optimize the rotating speed operation, generator speed and mains frequency are consistent, and speed reducer is reduced to the horizontal output of electrical network rated frequency to rotor with input end turbo compressor rotating speed, transmits the turbine shaft work simultaneously.Speed reducer is critical component in the energy conversion unit.
Because the helium gas turbine output speed than higher, be 15000rpm, and the rated speed of common generator has only 3000rpm, therefore can not be tied by the rotor turbine output shaft is direct and generator.Use gear-box, the output speed of helium gas turbine is reduced to 3000rpm earlier, the output terminal and the generator amature of gear-box is tied, can guarantee the generator proper functioning.If do not adopt speed reducer, just must use high-speed electric expreess locomotive.The manufacture difficulty of high-speed electric expreess locomotive is big, and the frequency of generating frequency and normal electrical network is inconsistent, needs frequency modulation equipment, and these all can increase research difficulty and device fabrication expense.
Because high temperature gas cooled reactor adopts in harness arrangement, promptly pressure vessel and energy conversion unit are arranged in juxtaposition.Adopt this in harness structure, all must adopt vertical layout between helium gas turbine, speed reducer and the generator.Find that by retrieval and to market survey all high speed gear reducers all are that horizontal type structure arranges that not seeing has vertical structure at present.Its main difficulty after speed reducer changes vertical structure into, is difficult to the lubricant oil in the casing is sealed, because lubricant oil can directly leak from axle head, and horizontal type structure, because the bottom is a casing, sealing guarantees than being easier to.
Summary of the invention
The speed reducer that the purpose of this invention is to provide a kind of vertical layout, it can be reduced to the conventional generator rated speed with the direct circulation time turbine speed of high-temperature gas-cooled reactor helium gas, this speed reducer has seal arrangement, can avoid lubricant oil and oil and gas leakage outside speed reducer.
Vertical type high speed gear reducer provided by the present invention is characterized in that: it adopts vertical layout, and described high speed shaft enters casing from the lower end of described vertical speed reducer, slows down through reducing gear, and lower velocity shaft stretches out with generator shaft from the upper end of casing and links to each other; Top at described casing has oil inlet hole, has oil return in the side of the bottom of casing, exports at the high speed shaft inlet of described speed reducer and lower velocity shaft the seal arrangement that prevents oil leakage is housed.
Described reducing gear is a planetary gear train, the sun gear (12) that is positioned at the middle part is coaxial with high speed shaft (5), at sun gear (12) planet wheel (10) a plurality of and sun gear (12) engagement is arranged on every side, the lower end of the axle (11) of described planet wheel (10) is fixed on the first pivoted frame group (14), the described first pivoted frame group (14) by one with the fixing main thrust bearings (15) of casing from lower support, between described first pivoted frame group (14) and high speed shaft (5), speed end sliding bearing (19) is arranged, between described first pivoted frame group (14) and casing, low speed end sliding bearing (17) is arranged; The upper end of described planet wheel shaft (11) be fixed on the second coaxial pivoted frame group (13) of lower velocity shaft on, the described second pivoted frame group (13) by one with the fixing secondary thrust-bearing (15) of casing from upper support, between described second pivoted frame group (13) and casing, low speed end sliding bearing (17) is arranged, the upper end of described high speed shaft is stretched in the described second pivoted frame group (13), between the high speed shaft (5) and the second pivoted frame group (13) speed end sliding bearing (19) is arranged.
Described planet wheel (10) has 3, be evenly distributed on described sun gear (12) around.Described planet wheel (10) is by a ring gear (9) and bigeminy tooth cover (a 8) engagement of fixing with casing.
The seal arrangement of described speed reducer high speed shaft ingress contains one and is fixed on the described high speed shaft (5), umbrella disc (20) with the coaxial rotation of high speed shaft (5), also has one from the bottom half projection, the platform (18) approaching with the lower end of described disc (20).The seal arrangement in the lower velocity shaft outlet port of described casing is a magnetic sealing device.
Beneficial effect, vertical speed reducer of the present invention can be reduced to 3000 rev/mins effectively with 150000 rev/mins of rotating speeds, and guarantees sealing effect, and lubricant oil and oil gas in the casing can not leak into outside the speed reducer.After adopting speed reducer of the present invention, avoided in system, using high-speed electric expreess locomotive and frequency variator, greatly reduced the manufacturing expense of equipment.
Description of drawings
Fig. 1 is the speed reducer schematic appearance.
Fig. 2 is the speed reducer sectional drawing.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing.
Speed reducer of the present invention comprises casing, input shaft, output shaft, planetary gears, bearing arrangement, seal arrangement by speed reducer, and concrete structure is seen Fig. 1～Fig. 2.
As Fig. 1, for ease of installation and removal, housing structure can be divided into 3 parts, and upper box 2, middle casing 3 and lower box 4 have draining hole 22 between middle casing 3 and the lower box 4.Casing upper end lower velocity shaft 1 reaches outside the casing, and casing lower end high speed shaft 5 reaches outside the casing.Have oil inlet hole 6 on the top of casing, have spill port 7 in the bottom of casing.Lubricant oil enters speed reducer from oil inlet hole 6, is withdrawn into the oil station from spill port 7.
Fig. 2 is the internal structure after casing is cut open.The structure of planetary gear train is described earlier, and structure of the present invention comprises the planet wheel that 3 covers are evenly arranged.Planet wheel 10 is installed on the planet wheel shaft 11, and detour spider gear shaft 11 of planet wheel 10 rotates.And the lower end of planet wheel shaft 11 is fixed on the first pivoted frame group 14, and the upper end of planet wheel 11 is fixed on the second pivoted frame group 13, and the second pivoted frame group 13 is a same axis with lower velocity shaft 1.Planet wheel 10 meshes together at central side and sun gear 12, and sun gear 12 and high speed shaft 5 are the same axises, and promptly sun gear is directly to process on high speed shaft.The working principle of speed reducer is from the merit that high speed shaft 5 is come in, to drive sun gear 12 with same high speed rotating.Sun gear 12 drives planet wheel 10 and rotates, and planet wheel 10 drives planet wheel shaft 11 and rotates.Because planet wheel shaft 11 is fixed on the second pivoted frame group 13, the second pivoted frame group 13 is rotated, and the second pivoted frame group 13 is a same axis with lower velocity shaft 1, after slowing down by gear transmission like this, with low speed merit is spread out of.Part 8 is bigeminy tooth covers, and its lower end and middle casing 3 are fixed together, and there are two sections narrow ring gears the upper end.Two sections ring gears on the bigeminy tooth cover 8 mesh with two ring gears 9 respectively.This Portuguese bowline structure can guarantee the accuracy of mesh of gear under high speed rotating, simultaneously, can also guarantee that ring gear 9 has certain floating in rotation process, can compensate because assembling and the caused axial deviation of manufacturing tolerances.Ring gear 9 and 3 planet wheel 10 engagements.
Narrate bearing arrangement below.Between the high speed shaft 5 of gear-box and the first pivoted frame group 14, be mounted with speed end sliding bearing 19, so just can guarantee relatively rotating between the high speed shaft 5 and the first pivoted frame group 14.In the upper end of high speed shaft 5, between the high speed shaft 5 and the second pivoted frame group 13 the speed end sliding bearing is installed also, and the end of high speed shaft 5 inserts the second pivoted frame group, 13 inside.Between the outside of the lower end first pivoted frame group 14 and middle casing 3, one group of low speed end sliding bearing 17 is installed also, the lower end first pivoted frame group 14 is played a supportive role, allow the lower end first pivoted frame group 14 simultaneously with respect to relatively rotating between the fixing middle casing 3.In the upper end, one group of low speed end sliding bearing is installed between the second pivoted frame group 13 and the upper box 2 too, its effect is identical with the sliding bearing of lower end.Downside in the first pivoted frame group 14 is equipped with one group of main thrust bearings 15, and its effect is the weight that supports planetary gear train, and allowing has relative movement between the first pivoted frame group 14 and the fixing middle casing 3.Similarly, at the second pivoted frame group, 13 upsides one group of secondary thrust-bearing 16 is installed also, its effect is from the upper support planetary gear train, and it is excessive to make that planetary gear train can not float in rotary course, also plays the fixedly effect of lower velocity shaft 1 simultaneously.
In order to guarantee that lubricant oil and oil gas in the gear-box do not leak into the outside, also are provided with seal arrangement at high speed shaft 5 and lower velocity shaft 1 end.Axle head at high speed shaft 5, be provided with umbrella-shaped structure disc 20, its effect is the high speed rotating along with high speed shaft, be thrown on the box body wall on every side flowing to following lubricant oil, and can not flow to the speed reducer outside by high speed shaft, lower end at disc 20, the platform 18 that a projection is arranged, the position of this platform and disc is more approaching, the oil that disc throws away can not drop on the platform 18, simultaneously, since this platform from the lower box projection, with the seam welded seal of casing, the oil of bottom half can not oozed out from seam, more impossible flowing back on the platform from the clearance leakage between platform and the high speed shaft, the design of disc and platform combination makes lubricant oil and oil gas be sealed in the casing, has avoided leaking from the casing lower end.At lower velocity shaft 1 end magnetic sealing device 21 is installed,, can fully oil gas be sealed in the casing by magnetic force.
Claims (6)
1, vertical type high speed gear reducer, contain from the high speed shaft of described helium gas turbine gas compressor input, with the lower velocity shaft that connects with generator shaft, and reducing gear, it is characterized in that it adopts vertical layout, described high speed shaft enters casing from the lower end of described vertical speed reducer, slow down through reducing gear, lower velocity shaft stretches out with generator shaft from the upper end of casing and links to each other; Top at described casing has oil inlet hole, has oil return in the side of the bottom of casing, exports at the high speed shaft inlet of described speed reducer and lower velocity shaft the seal arrangement that prevents oil leakage is housed.
2, vertical type high speed gear reducer as claimed in claim 1, it is characterized in that, described reducing gear is a planetary gear train, the sun gear (12) that is positioned at the middle part is coaxial with high speed shaft (5), at sun gear (12) planet wheel (10) a plurality of and sun gear (12) engagement is arranged on every side, the lower end of the axle (11) of described planet wheel (10) is fixed on the first pivoted frame group (14), the described first pivoted frame group (14) by one with the fixing main thrust bearings (15) of casing from lower support, between described first pivoted frame group (14) and high speed shaft (5), speed end sliding bearing (19) is arranged, between described first pivoted frame group (14) and casing, low speed end sliding bearing (17) is arranged; The upper end of described planet wheel shaft (11) be fixed on the second coaxial pivoted frame group (13) of lower velocity shaft on, the described second pivoted frame group (13) by one with the fixing secondary thrust-bearing (15) of casing from upper support, between described second pivoted frame group (13) and casing, low speed end sliding bearing (17) is arranged, the upper end of described high speed shaft is stretched in the described second pivoted frame group (13), between the high speed shaft (5) and the second pivoted frame group (13) speed end sliding bearing (19) is arranged.
3, vertical type high speed gear reducer as claimed in claim 2 is characterized in that, described planet wheel (10) has 3, be evenly distributed on described sun gear (12) around.
As claim 2 or 3 described vertical type high speed gear reducers, it is characterized in that 4, described planet wheel (10) is by a ring gear (9) and bigeminy tooth cover (a 8) engagement of fixing with casing.
5, vertical type high speed gear reducer as claimed in claim 1, it is characterized in that, the seal arrangement of described speed reducer high speed shaft ingress contains one and is fixed on the described high speed shaft (5), umbrella disc (20) with the coaxial rotation of high speed shaft (5), also has one from the bottom half projection, the platform (18) approaching with the lower end of described disc (20).
6, vertical type high speed gear reducer as claimed in claim 1 is characterized in that, the seal arrangement in the lower velocity shaft outlet port of described casing is a magnetic sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510011655XA CN100356091C (en) | 2005-04-29 | 2005-04-29 | Vertical type high speed gear reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510011655XA CN100356091C (en) | 2005-04-29 | 2005-04-29 | Vertical type high speed gear reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1687616A true CN1687616A (en) | 2005-10-26 |
| CN100356091C CN100356091C (en) | 2007-12-19 |
Family
ID=35305658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510011655XA Expired - Fee Related CN100356091C (en) | 2005-04-29 | 2005-04-29 | Vertical type high speed gear reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100356091C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101799068A (en) * | 2010-04-15 | 2010-08-11 | 胡炜 | Vertical speed reducer and leak-proof sealing device of upper output shaft thereof |
| CN101846156A (en) * | 2010-03-01 | 2010-09-29 | 吴声震 | Vertical and high-speed quasi-planetary reduction gearbox for nuclear generation |
| CN102287491A (en) * | 2011-08-03 | 2011-12-21 | 重庆齿轮箱有限责任公司 | Vertical type planet gearbox transmission device |
| CN101900185B (en) * | 2009-05-27 | 2012-11-14 | 无锡港盛港口机械有限公司 | Vertical-type planetary speed reducer |
| CN104455331A (en) * | 2014-09-29 | 2015-03-25 | 北京航天动力研究所 | Vertical self-lubricating heavy-load high-speed-increase gearbox |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3404713A1 (en) * | 1984-02-10 | 1985-08-14 | Heinz 6730 Neustadt Hammann | Mixing machine |
| CN2188682Y (en) * | 1993-09-01 | 1995-02-01 | 王俭 | Non-contacting sealing structure for crankshaft rear-end of internal combustion engine |
| CN2224660Y (en) * | 1995-06-20 | 1996-04-17 | 王玉亮 | Special reducer for stone-powder mill |
| CN2369021Y (en) * | 1999-04-23 | 2000-03-15 | 赵子明 | Sandproof sealing mechanism for underwater electric motor |
-
2005
- 2005-04-29 CN CNB200510011655XA patent/CN100356091C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900185B (en) * | 2009-05-27 | 2012-11-14 | 无锡港盛港口机械有限公司 | Vertical-type planetary speed reducer |
| CN101846156A (en) * | 2010-03-01 | 2010-09-29 | 吴声震 | Vertical and high-speed quasi-planetary reduction gearbox for nuclear generation |
| CN101846156B (en) * | 2010-03-01 | 2011-12-07 | 吴声震 | Vertical and high-speed quasi-planetary reduction gearbox for nuclear generation |
| CN101799068A (en) * | 2010-04-15 | 2010-08-11 | 胡炜 | Vertical speed reducer and leak-proof sealing device of upper output shaft thereof |
| CN101799068B (en) * | 2010-04-15 | 2012-12-12 | 沃德(天津)传动有限公司 | Vertical speed reducer and leak-proof sealing device of upper output shaft thereof |
| CN102287491A (en) * | 2011-08-03 | 2011-12-21 | 重庆齿轮箱有限责任公司 | Vertical type planet gearbox transmission device |
| CN102287491B (en) * | 2011-08-03 | 2013-11-27 | 重庆齿轮箱有限责任公司 | Vertical type planet gearbox transmission device |
| CN104455331A (en) * | 2014-09-29 | 2015-03-25 | 北京航天动力研究所 | Vertical self-lubricating heavy-load high-speed-increase gearbox |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100356091C (en) | 2007-12-19 |
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Granted publication date: 20071219 Termination date: 20100429 |