CN204457895U - By the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation - Google Patents
By the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation Download PDFInfo
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- CN204457895U CN204457895U CN201520109990.2U CN201520109990U CN204457895U CN 204457895 U CN204457895 U CN 204457895U CN 201520109990 U CN201520109990 U CN 201520109990U CN 204457895 U CN204457895 U CN 204457895U
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Abstract
The utility model discloses a kind of Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation, mainly change traditional single cylinder, single shaft unit into twin-tub, twin shaft, two rotating speed unit, high-pressure cylinder rotating speed 4000rpm ~ 7200rpm, low pressure (LP) cylinder rotating speed 3000rpm or 3600rpm; Employing resuperheat circulates, and reheat pressure is chosen as 13% ~ 30% of first pressing, and high-pressure cylinder movable vane blade root footpath reduces by 15% ~ 55%, and free height of blade increases by 50% ~ 140%, backheat progression 3-10 level, has increased substantially unit efficiency.
Description
Technical field
The utility model relates to a kind of Turbo-generator Set, is mainly used in solar light-heat power-generation, industrial afterheat power generation, belongs to industrial turbine technical field.
Background technique
Because photothermal power generation technology is in the advantage of the uniquenesses such as system effectiveness, construction scale, load stability, become the industry that clean energy resource is with fastest developing speed.The nearly 5 years photothermal power generation growth rates 100% in the whole world, according to IEA prediction, will reach 24.50GW to the accumulative installation of global photothermal power generation in 2015, global solar photothermal power generation in 2050 electric motor power will reach 1089GW.At present, the maximum 130MW of external unit puts into commercial operation, and domestic photothermal power generation project is in the fast starting stage.According to " solar electrical energy generation development medium term planning ", target in 2015 builds photothermal power generation project 1,000,000 kilowatts.The construction object of 2020 is 3,000,000 kilowatts, and solar light-heat power-generation has huge market prospects.According to the data that industry information provides, in 875 preconsolidation stress, 10MW level items 1,50MW level items 11,60MW level items 2,100MW level items 2.
On the other hand, along with carrying out of energy-saving and emission-reduction policy, various industrial afterheat power generation project is also increasing.
The feature of solar energy optical-thermal and industrial afterheat power generation project is that initial outlay is high, operating cost is low, and therefore the efficiency of unit operation becomes the factor determining rate of return on investment most critical.
Conventional solar energy optical-thermal and industrial afterheat power generation steam turbine group of motors are single cylinder structure, rated speed 3000rpm(frequency 50Hz) or 3600rpm(frequency 60Hz), there is the shortcoming of following unfavorable unit efficiency:
1, single cylinder unit limits by axle system span, flow passage component finite axial length, and through-flow progression is on the low side, and every grade of enthalpy drop is higher, and gear-stage velocity ratio is less than normal, deviate from best gear-stage velocity ratio, and unit efficiency does not reach optimum.
2, the general pressure of the steam parameter of solar energy optical-thermal and industrial afterheat power generation unit is higher, and temperature is on the low side, and because of through-flow progression few, inter-stage enthalpy drop is high, and temperature, pressure reduction are large, cause exhaust temperature on the low side, high humidity, and water erosion that low pressure stage is through-flow is serious, inefficiency.
3, solar energy optical-thermal and the industrial afterheat power generation power of the assembling unit less (5MW ~ 125MW), high pressure section volume flow is less, and profile loss and displacement loss are comparatively large, cause the inefficiency that high pressure is through-flow.
4, the vapour condenser of single cylinder unit is arranged in cylinder side, and steam discharge path bends, and power loss is large, also can reduce unit efficiency.
In addition, the cylinder volume of single cylinder unit is large, and thermal capacity is large, opens, dead time is long, and solar energy optical-thermal and industrial afterheat power generation unit usually require to have and open fast, stop function.
Summary of the invention
The purpose of this utility model, is to provide a kind of high-efficiency turbine wheel generator set of solar energy optical-thermal/industrial afterheat power generation.
Realizing above-mentioned purpose technological scheme is:
A kind of Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation, comprise steam turbine and generator, described steam turbine comprises high-pressure cylinder and low pressure (LP) cylinder, it is characterized in that, the rated speed of described high-pressure cylinder is 4000rpm ~ 7200 rpm, and the rated speed of described low pressure (LP) cylinder is 3000rpm or 3600rpm; Adopt resuperheat mode, high-pressure cylinder steam discharge enters low pressure (LP) cylinder and continues acting after reheater heats again; Described generator arrangements is between high-pressure cylinder, low pressure (LP) cylinder, and one client link low pressure (LP) cylinder, the other end connects high-pressure cylinder by speed changer.
The pressure of described reheated steam is the 13-30% of first pressing.
The moving vane of described high-pressure cylinder is compared with conventional design, and blade root footpath reduces by 15% ~ 55%, and free height of blade increases by 50% ~ 140%.
Described high-pressure cylinder and low pressure (LP) cylinder are provided with backheat bleeding point, backheat progression 3-10 level.
Another kind of scheme of the present utility model is:
A kind of Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation, comprise steam turbine and generator, described steam turbine comprises high intermediate pressure cylinder and rotor, low pressure (LP) cylinder and rotor thereof, described high intermediate pressure cylinder is high-pressure cylinder, intermediate pressure cylinder cylinder combined structure, adopt resuperheat mode, high-pressure cylinder steam discharge enters intermediate pressure cylinder and continues acting after reheater heats again, it is characterized in that, the rotating speed of described High inter case is 4000rpm ~ 7200 rpm, and the rotating speed of described low pressure rotor is 3000rpm or 3600rpm; Described generator arrangements is in high intermediate pressure cylinder front end, and by the front end of the first speed changer connection high-pressure cylinder, the rear end of high-pressure cylinder is by the second speed changer connection low pressure (LP) cylinder.
The pressure of described reheated steam is the 13-30% of first pressing.
The moving vane of described high-pressure cylinder is compared with conventional design, and blade root footpath reduces by 15% ~ 55%, and free height of blade increases by 50% ~ 140%.
Described high-pressure cylinder and low pressure (LP) cylinder are provided with backheat bleeding point, backheat progression 3-10 level.
The beneficial effects of the utility model:
By above-mentioned improvement, increase substantially the efficiency of the Turbo-generator Set with solar energy optical-thermal/industrial afterheat power generation.
The utility model is described in detail below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is a kind of structural drawing of the present utility model
Fig. 2 is another kind of structural drawing of the present utility model.
Embodiment
embodiment one
See Fig. 1, the Turbo-generator Set of this use solar energy optical-thermal/industrial afterheat power generation, comprise high-pressure cylinder 1, first coupling 2, speed-changing gear box 3, second coupling 4, generator 5, the 3rd coupling 6, low pressure (LP) cylinder 7, the vapour condenser 8 that are disposed in order, and steam raising plant 10 and lubricating oil tank 9.
The rated speed of high-pressure cylinder 1 is 4000rpm ~ 7200 rpm, and concrete rotating speed is determined by blade flow efficiency and intensity, after completing blade type selecting, calculates.The rated speed of low pressure (LP) cylinder 7 is 3000rpm or 3600rpm; Adopt resuperheat mode, high-pressure cylinder steam discharge enters low pressure (LP) cylinder 7 and continues acting after the reheater of steam raising plant 10 heats again, and the pressure of reheated steam is the 13-30% of first pressing.
The moving vane of high-pressure cylinder 1 is compared with conventional design, and blade root footpath reduces by 15% ~ 55%, and free height of blade increases by 50% ~ 140%.
High-pressure cylinder 1 and low pressure (LP) cylinder 7 are equipped with backheat bleeding point, backheat progression 3-10 level.
Vapour condenser 8 is arranged in the tail end of low pressure (LP) cylinder 7, realizes axial exhaust.
Lubricating oil tank 9 is for providing lubricant oil to each gear-box of unit and bearing.
embodiment two
See Fig. 2, the Turbo-generator Set of this use solar energy optical-thermal/industrial afterheat power generation, comprise generator 5, first coupling 6, first speed-changing gear box 11, second coupling 12, high-pressure cylinder 1, the 3rd coupling 2, second speed-changing gear box 3, the 4th coupling 4, low pressure (LP) cylinder 7, the vapour condenser 8 that are disposed in order, and steam raising plant 10 and lubricating oil tank 9.
All the other are identical with embodiment one.
Above embodiment's preferential recommendation embodiment one, it is fewer than embodiment two parts, and cost is low, more compact structure, and floor space is little, and transmission link is few, efficiency is high, and power loss is little.
This unit, compared with traditional single cylinder, single shaft unit, has following improvement:
-change traditional single cylinder, single-shaft configuration into twin-tub, cross-compound arrangement, namely cylinder is divided into high-pressure cylinder and low pressure (LP) cylinder, high-pressure cylinder rotating speed 4000rpm ~ 7200rpm, and concrete rotating speed is determined by blade flow efficiency and intensity, after completing blade type selecting, calculates.Low pressure (LP) cylinder rotating speed 3000rpm or 3600rpm; On the one hand, increase axle system span, increase steam turbine acting progression, improve high-pressure cylinder rotating speed, gear-stage velocity ratio can be made to design in wheel efficiency optimum point, thus improve whole turbine efficiency; Speed ratio is selected according to every grade of degree of reaction, ensures that every gear-stage velocity ratio is at efficiency optimization point; On the other hand, as far as possible many backheat progression can be set, usually arrange 3 ~ 10 grades, improve the entering water temp of steam raising plant, reduce cold end loss; Again on the one hand, high-pressure cylinder, low pressure (LP) cylinder volume separately, thermal capacity are all little than former single cylinder, are beneficial to unit and open fast, stop;
-adopting resuperheat circulation, high-pressure cylinder steam discharge enters low pressure (LP) cylinder and continues acting after reheater heats again, and reheat pressure is chosen as 13% ~ 30% of first pressing, drops on the optimum point of cycle efficiency; To improve the average endothermic temperature of unit, reduce exhaust steam moisture, the cycle efficiency of unit will significantly improve simultaneously;
-improve the design of high-pressure cylinder moving vane, compared with conventional design, the pitch diameter of blade reduces, and blade root footpath reduces by 15% ~ 55%, and blade-section admission degree disappears; Free height of blade increases by 50% ~ 140%, thus reduces the profile loss of blade, improves the flow efficiency of whole high-pressure cylinder;
-vapour condenser is arranged in low pressure (LP) cylinder tail end, realize axial exhaust, make steam discharge path shorten and directly suitable, reduce steam discharge loss.
Claims (8)
1. the Turbo-generator Set with solar energy optical-thermal/industrial afterheat power generation, comprise steam turbine and generator, described steam turbine comprises high-pressure cylinder and low pressure (LP) cylinder, it is characterized in that, the rated speed of described high-pressure cylinder is 4000rpm ~ 7200 rpm, and the rated speed of described low pressure (LP) cylinder is 3000rpm or 3600rpm; Adopt resuperheat mode, high-pressure cylinder steam discharge enters low pressure (LP) cylinder and continues acting after reheater heats again; Described generator arrangements is between high-pressure cylinder, low pressure (LP) cylinder, and one client link low pressure (LP) cylinder, the other end connects high-pressure cylinder by speed changer.
2. the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation as claimed in claim 1, is characterized in that, the pressure of described reheated steam is the 13-30% of first pressing.
3. the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation as claimed in claim 1, is characterized in that, the moving vane of described high-pressure cylinder is compared with conventional design, and blade root footpath reduces by 15% ~ 55%, and free height of blade increases by 50% ~ 140%.
4. the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation as claimed in claim 1, is characterized in that, described high-pressure cylinder and low pressure (LP) cylinder are provided with backheat bleeding point, backheat progression 3-10 level.
5. the Turbo-generator Set with solar energy optical-thermal/industrial afterheat power generation, comprise steam turbine and generator, described steam turbine comprises high-pressure cylinder and low pressure (LP) cylinder, it is characterized in that, the rated speed of described high-pressure cylinder is 4000rpm ~ 7200 rpm, and the rated speed of described low pressure (LP) cylinder is 3000rpm or 3600rpm; Adopt resuperheat mode, high-pressure cylinder steam discharge enters low pressure (LP) cylinder and continues acting after reheater heats again; Described generator arrangements is in high-pressure cylinder front end, and by the front end of the first speed changer connection high-pressure cylinder, the rear end of high-pressure cylinder is by the second speed changer connection low pressure (LP) cylinder.
6. the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation as claimed in claim 5, is characterized in that, the pressure of described reheated steam is the 13-30% of first pressing.
7. the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation as claimed in claim 5, is characterized in that, the moving vane of described high-pressure cylinder is compared with conventional design, and blade root footpath reduces by 15% ~ 55%, and free height of blade increases by 50% ~ 140%.
8. the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation as claimed in claim 5, is characterized in that, described high-pressure cylinder and low pressure (LP) cylinder are provided with backheat bleeding point, backheat progression 3-10 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520109990.2U CN204457895U (en) | 2015-02-15 | 2015-02-15 | By the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520109990.2U CN204457895U (en) | 2015-02-15 | 2015-02-15 | By the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation |
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| CN204457895U true CN204457895U (en) | 2015-07-08 |
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| CN201520109990.2U Withdrawn - After Issue CN204457895U (en) | 2015-02-15 | 2015-02-15 | By the Turbo-generator Set of solar energy optical-thermal/industrial afterheat power generation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675455A (en) * | 2015-02-15 | 2015-06-03 | 东方电气集团东方汽轮机有限公司 | Method and structure used for improving efficiency of turbo generator unit using solar energy optothermal/industrial waste heat for generating electricity |
| CN112855294A (en) * | 2021-01-16 | 2021-05-28 | 宁波明州热电有限公司 | Steam turbine power generation equipment |
-
2015
- 2015-02-15 CN CN201520109990.2U patent/CN204457895U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675455A (en) * | 2015-02-15 | 2015-06-03 | 东方电气集团东方汽轮机有限公司 | Method and structure used for improving efficiency of turbo generator unit using solar energy optothermal/industrial waste heat for generating electricity |
| CN104675455B (en) * | 2015-02-15 | 2016-09-14 | 东方电气集团东方汽轮机有限公司 | Improve the method by the Turbo-generator Set efficiency of solar energy optical-thermal/industrial afterheat power generation and structure |
| CN112855294A (en) * | 2021-01-16 | 2021-05-28 | 宁波明州热电有限公司 | Steam turbine power generation equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20160914 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20160914 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |