CN207795326U - Turbine LP rotors - Google Patents
Turbine LP rotors Download PDFInfo
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- CN207795326U CN207795326U CN201721887846.7U CN201721887846U CN207795326U CN 207795326 U CN207795326 U CN 207795326U CN 201721887846 U CN201721887846 U CN 201721887846U CN 207795326 U CN207795326 U CN 207795326U
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Abstract
This application provides turbine LP rotors, installed capacity is less than 50MW, includes vapor generation part, level-one generating set, reheat plant and the two level generating set of one loop body of forming engaging one another；Vapor generation part generates high steam；Level-one generating set includes first turbine and level-one generator, and high steam is passed through in first turbine, and driving first turbine is worked with 5000~6700r/min rated speeds；Heat exchange occurs in vapor generation part for reheat plant guiding steam；Two level generating set includes second turbine and secondary generator.The advantages of the application, is that the capacity of the unit is the generated output summation of two generators；Into the steam in high speed turbine machine, for pressure higher than the steam pressure of no reheating embrittlement, unit total capacity reaches energy-efficient purpose more than no reheating embrittlement, heat consumption less than no reheating embrittlement under identical initial temperature.
Description
Technical field
This application involves technical field of power generation more particularly to a kind of turbine LP rotors.
Background technology
General steam electric power generator includes steam turbine, generator and high pressure steam boiler, and high pressure steam boiler is steam turbine
High steam is provided, steam turbine drives electrical power generators.Modern medium and small unit is all made of single cycle, and the thermal efficiency only up to reach
35%~38%.The a large amount of energy is not effectively utilized.
In order to make full use of steam heat, some power generator utilize reheating principle, steam to do one in steam turbine
It after dividing work(, is drawn from centre, temperature (being generally increased to unit rated temperature) is improved by the reheater of boiler, is then returned
Steam turbine continues to do work, and is finally discharged into the steam turbine of condensing engine.Steam uses resuperheat, and it is wet to not only reduce gas turbine exhaust gas
Degree further improves the operating condition of several grade blades in steam turbine end, improves the internal efficiency ratio of steam turbine.
For example, the patent of invention of Patent No. 201110087438.4 discloses a kind of steam-turbine unit, the patent teaches
The scheme of thermal technology again, the steam-turbine unit include high-pressure steam engine, first to N reheaters and first to N reheating steamers
Machine, wherein the steam that the heating of the first reheater is discharged from high-pressure steam engine, steam drive the first reheated steam machine after heating, the
Two are utilized respectively the first steam being discharged to the reheat steam turbines of N~1 to N reheaters.
But the capacity of existing reheating generating set is substantially in hundreds of even upper m. gigawatt (GW)s, in the power generation of low capacity
In unit, the development of reheating technology is not very ripe.
Therefore, how for the above-mentioned prior art existing disadvantage carries out research and development improvement, is actually exerted needed for relevant industry
Power research and development target, the application designer in view of this, be think and creation idea, designed then with experience for many years, pass through
It is multi-party to inquire into and study sampling test, and improvement is repeatedly corrected, it is releasing the application.
Utility model content
(1) technical problems to be solved
In view of above-mentioned technical problem, this application provides a kind of turbine LP rotors.
(2) technical solution
This application provides a kind of turbine LP rotors, installed capacity is less than 50MW, which is characterized in that including holding in the mouth each other
It is connected into one loop body of shape：
Vapor generation part, including boiler；
Level-one generating set, including first turbine and level-one generator, the high steam are passed through in first turbine, are driven
Dynamic first turbine is worked with the rated speed of 5000~6700r/min, and first turbine drives level-one electrical power generators；
Reheat plant guides the steam flowed out from level-one generating set to again flow into vapor generation part, in steam generation
Heat exchange occurs in portion；
Two level generating set, including second turbine and secondary generator, the middle pressure steam through reheat plant flow into two
Level steam turbine, driving second turbine drive secondary generator power generation.
In some embodiments of the present application, the turbine LP rotors rated generation power is 30~50MW.
In some embodiments of the present application, the boiler pressure is 11.5~16Mpa.
In some embodiments of the present application, the first turbine rated speed is 5500r/min.
In some embodiments of the present application, the level-one generator rated generation power is 8.5~15MW.
In some embodiments of the present application, the second turbine rated speed is 3000r/min.
In some embodiments of the present application, the steam pressure after the reheating is 2.0~3.0Mpa.
In some embodiments of the present application, the secondary generator rated generation power is 24~35MW.
In some embodiments of the present application, the boiler is water-tube boiler or solar energy heat boiler.
In some embodiments of the present application, the boiler is gas boiler, and the steam is vapor.
(3) advantageous effect
It can be seen from the above technical proposal that the application at least has the advantages that one of them：
(1) single reheat technology is used in small-capacity generator group, i.e., it is common using a high speed turbine machine and one
The steam turbine of rotating speed is contacted, the steam turbine action of driving ordinary rotational speed after the steam being discharged from high speed turbine machine is reheated, and high
Fast steam turbine and ordinary rotational speed steam turbine respectively drive a motor, the capacity of the unit total for the generated output of two generators
With；Steam pressure into the steam pressure in high speed turbine machine higher than no reheating embrittlement, but total capacity is more than without heat engine again
Group reaches energy-efficient purpose；
(2) steam pressure for entering high speed turbine machine is 11.5~16Mpa, and high speed turbine machine rotating speed is 5000~6700r/
The generated output of min, the level-one generator of driving are 10MW or so, and the steam being discharged from high speed turbine machine becomes middle pressure and steams
Vapour, driving ordinary rotational speed steam turbine rotation after the middle pressure steam is reheated, ordinary rotational speed steam engine rotating speed is 3000r/min,
The generated output of the generator of driving is 30MW or so, and the total capacity of the generating set is 40MW or so, than same capacity nothing again
The generating set of thermal process improves steam pressure, and the generating set generated output of thermal process is big again than the nothing under square one, carries
High efficiency of energy utilization, is suitble to small-capacity generator group；
(3) entire generating set drives two generators, the traditional small work(of such group of composition and division in a proportion respectively using two stage turbine
Two steam turbines drive an integral shaft generator to increase flexibility simultaneously in rate generating set, and output electricity can be respectively connected to not
With step-up transformer or direct-furnish electricity consumption end, low-pressure turbine can also isolated operation, more take full advantage of the energy, using energy source
Rate improves 40% or more.
Description of the drawings
Fig. 1 is the schematic diagram of the embodiment of the present application.
Fig. 2 is the fitting arrangement of the embodiment of the present application.
【The application main element symbol description】
11, boiler；12, fuel station；2, first turbine；
3, level-one generator；4, reheater；5, second turbine；
5, reheating pipeline；6, secondary generator；7, elevated platform；
8, superheater；9, chimney；10, main steam header road；
13, moisture separation device.
Specific implementation mode
This application provides a kind of turbine LP rotors.Using concatenated two steam turbines, steam is from first steamer
It is high speed turbine machine that second steam turbine, first steam turbine are driven after machine discharge is heated, and second steam turbine is common turn
Fast steam turbine, the two combine, and reach the Effec-tive Function of small-capacity generator group.
To make the purpose, technical scheme and advantage of the application be more clearly understood, below in conjunction with specific embodiment, and reference
The application is further described in attached drawing.
Embodiment one
In the exemplary embodiment of the application, turbine LP rotors are provided.As shown in Figure 1 and Figure 2, this Shen
Please generating set generated output between 30~50MW, by vapor generation part, level-one generating set, two level generating set it is engaging one another at
One loop body includes first turbine and level-one generator wherein in level-one generating set, and two level generating set includes two level steamer
Machine and secondary generator.
Each component part of the present embodiment is described in detail individually below.
Vapor generation part recycles the steam after cycle, including coal gas fuel station 12 and height for generating high steam
Pressure steam boiler 11；Steam boiler 11 generates pressure in the high steam of 11.5~16Mpa, and high steam passes through main steam header road
10 flow into the first turbine 2 in level-one generating set, and the flue gas after fuel combustion is discharged from steam boiler chimney 9.
Level-one generating set includes first turbine 2 and level-one generator 3, after high steam is passed through in first turbine 2, is driven
Dynamic first turbine 2 drives level-one generator 3 to generate electricity with 5000~6700r/min rotary speed workings, and steam is discharged one after acting
Level steam turbine 2, into reheat plant.
Main steam system include from boiler superheater outlet header to the main steam line of first turbine import stop valve,
Valve, steam trap connection and towards the system that the steam branch pipe into vapour equipment is formed further include being arranged from first turbine high pressure cylinder
Vapour is to the reheating cold segment pipe of boiler reheater outlet header, valve and from reheater outlet header to second turbine intermediate pressure cylinder
Reheating hot pipe, the valve of imported valve.Two-tube~single tube~double hose main steam system that the application uses, from superheater
Outlet in stokehold is merged into a single tube after picking out, to first turbine high pressure cylinder before be divided into as two branch pipes, be coupled with one
The main inlet throttle-stop valve of level steam turbine high pressure cylinder both sides makes steam flow can be good at since main steam line middle section uses single tube
It mixes, reduces the vapor (steam) temperature deviation and pressure divergence into first turbine.
Reheat plant is the reheater 4 being arranged in steam boiler, and reheater 4 is substantially a kind of and made work(
Low-pressure steam is heated and is reached the steam superheater of certain temperature again, and the effect of reheater 4 further improves power plant and follows
The thermal efficiency of ring, and the steam moisture of second turbine exhaust stage blade is made to control in allowed limits.Reheater 4 by pipe and
Header forms.Steam and flue gas are flowed through pipe is inside and outside respectively.By the difference of heat transfer type, reheater 4 can be divided into convection type and spoke
Penetrate formula.Convection type reheater 4 is arranged in convection pass；Radiant reheater 4 is arranged in burner hearth.
It is arranged using the two-stage heating surface of low-temperature reheater+high temperature reheater 4, reheating is adjusted using burner swing mode
The steam temperature of vapor (steam) temperature arranges certain cold reheater radiation heating-surface in upper furnace or furnace outlet radiation areas,
Using radiation+convection heating surface arrangement, achieve the purpose that steam temperature is adjusted to increase reheater system caloric receptivity at low load.
For the heat absorption proportion requirement for reaching the requirement of the vapor (steam) temperature needed for steam turbine, reaching superheated steam required 80% or so, stove
Thorax top needs to arrange certain 8 radiation heating-surface of superheater product, usually arranges total radiation heat absorption but the lower screen of vapor (steam) temperature
Formula superheater 8.
Steam is flowed out from level-one generating set, is flowed in reheater 4 by reheating pipeline 51, with generation heat in steam boiler 11
It exchanges, heats up again, the steam after heating enters two level generating set.
Two level generating set includes second turbine 5 and secondary generator 6, the pressure of the high steam through reheat plant
In 2.0~3.0Mpa, which flows into second turbine 5, and driving second turbine 5 drives two with 3000r/min rotary speed workings
Grade generator 6 generates electricity.
Reheating is to improve the measure of generating set heat efficiency, and after thermal technology again, the length of jet chimney increases, and causes
Construction cost increases, and duct length increases, and also increases the resistance of the steam in pipeline, consumes the energy of steam, unfavorable
In making full use of for the energy.Traditional arrangement is all that unit is arranged in low level, since jet chimney is from steam copper
The high-order of stove 11 is drawn, and the mounting means of low level increases the length of jet chimney, is unfavorable for improving generatine set heat efficiency.In this regard,
The mounting platform of steam turbine is arranged in the high position for drawing jet chimney, first turbine 2 and the front and back arrangement of second turbine 5,
The jet chimney length between steam turbine and steam boiler 1 and steam turbine is shortened, the energy in jet chimney internal loss is reduced
Amount, improves the thermal efficiency.
By the hot steam of level-one generating set or two level generating set also by there is moisture separation device 13, by gas and liquid
Body is separately recovered to be utilized again.Moisture separation device 13 is construction of pressure vessel carbon steel or stainless steel equipment, and interface pattern is method
Blue structure.
Vapor generation part can be gas boiler, or water-tube boiler or solar energy heat boiler.
Embodiment two
On the basis of embodiment one, the steam pressure into first turbine is 11.5Mpa, the rotating speed of first turbine
Generated output for 6500r/min, primary motor is 8.5MW.
Embodiment three
On the basis of embodiment one, the steam pressure into first turbine is 13Mpa, and the rotating speed of first turbine is
The generated output of 5500r/min, primary motor are 10MW.
Example IV
On the basis of embodiment one, the steam pressure into first turbine is 16Mpa, and the rotating speed of first turbine is
The generated output of 5500r/min, primary motor are 15MW.
Embodiment five
On the basis of one to three any embodiment, the middle pressure steam pressure into second turbine is 2.1Mpa, two level
The rotating speed of steam turbine is 3000r/min, and the generated output of secondary motor is 24MW.
Embodiment six
On the basis of one to three any embodiment, the middle pressure steam pressure into second turbine is 2.3Mpa, two level
The rotating speed of steam turbine is 3000r/min, and the generated output of secondary motor is 30MW.
Embodiment seven
On the basis of example IV, the middle pressure steam pressure into second turbine is 2.8Mpa, second turbine
Rotating speed is 3000r/min, and the generated output of secondary motor is 35MW.
The technique effect situation of above-described embodiment one to four is summarized as follows table：
The technique effect situation of above-described embodiment five to seven is summarized as follows table：
The pressure of small-capacity generator group high-temperature steam of the tradition without reheating generally requires control in 8~8.8Mpa, 130t/
H can be only achieved the generated output of 30Mpa, and energy consumption is the 105~108% of the application.As can be seen from the above table, this patent
Generating efficiency significantly improve.
So far, attached drawing is had been combined the present embodiment is described in detail.According to above description, those skilled in the art
There should be clear understanding to the application.
It should be noted that in attached drawing or specification text, the realization method for not being painted or describing is affiliated technology
Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, the above-mentioned definition to each element and method is simultaneously
It is not limited only to various concrete structures, shape or the mode mentioned in embodiment.
It should also be noted that, the demonstration of the parameter comprising particular value can be provided herein, but these parameters are without definite etc.
In corresponding value, but analog value can be similar in acceptable error margin or design constraint.The side mentioned in embodiment
Only it is the direction of refer to the attached drawing to term, such as "upper", "lower", "front", "rear", "left", "right" etc., is not used for limiting this
The protection domain of application.In addition, unless specifically described or the step of must sequentially occur, the sequences of above-mentioned steps there is no restriction in
It is listed above, and can change or rearrange according to required design.And above-described embodiment can be based on design and reliability
Consider, the collocation that is mixed with each other is used using or with other embodiment mix and match, i.e., the technical characteristic in different embodiments can be with
Freely form more embodiments.
Particular embodiments described above has carried out further in detail the purpose, technical solution and advantageous effect of the application
It describes in detail bright, it should be understood that the foregoing is merely the specific embodiment of the application, is not intended to limit this application, it is all
Within spirit herein and principle, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the application
Within the scope of shield.
Claims (10)
1. a kind of turbine LP rotors, installed capacity is less than 50MW, which is characterized in that including one cycle of forming engaging one another
Body：
Vapor generation part, including boiler (1)；
Level-one generating set, including first turbine (2) and level-one generator (3), the high steam are passed through first turbine (2)
Interior, driving first turbine (2) is worked with the rated speed of 5000~6700r/min, and first turbine (2) drives level-one power generation
Machine (3) generates electricity；
Reheat plant guides the steam flowed out from level-one generating set to again flow into vapor generation part, in vapor generation part
Heat exchange occurs；
Two level generating set, including second turbine (5) and secondary generator (6), the middle pressure steam through reheat plant flow into
Second turbine (5), driving second turbine (5) drive secondary generator (6) to generate electricity.
2. turbine LP rotors according to claim 1, which is characterized in that the turbine LP rotors rated generation
Power is 30~50MW.
3. turbine LP rotors according to claim 1, which is characterized in that boiler (1) steam pressure is 11.5
~16Mpa.
4. turbine LP rotors according to claim 1, which is characterized in that first turbine (2) rated speed
For 5500r/min.
5. turbine LP rotors according to claim 1, which is characterized in that level-one generator (3) rated generation
Power is 8.5~15MW.
6. turbine LP rotors according to claim 1, which is characterized in that second turbine (5) rated speed
For 3000r/min.
7. turbine LP rotors according to claim 1, which is characterized in that the steam pressure after the reheating is 2.0
~3.0Mpa.
8. turbine LP rotors according to claim 1, which is characterized in that secondary generator (6) rated generation
Power is 24~35MW.
9. according to claim 1~8 any one of them turbine LP rotors, which is characterized in that the boiler (1) is thermoelectricity
Boiler or solar energy heat boiler.
10. according to claim 1~8 any one of them turbine LP rotors, which is characterized in that the boiler (1) is coal
Gas boiler, the steam are vapor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721887846.7U CN207795326U (en) | 2017-12-28 | 2017-12-28 | Turbine LP rotors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721887846.7U CN207795326U (en) | 2017-12-28 | 2017-12-28 | Turbine LP rotors |
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| CN207795326U true CN207795326U (en) | 2018-08-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087047A (en) * | 2017-12-28 | 2018-05-29 | 江苏金通灵流体机械科技股份有限公司 | Turbine LP rotors and its electricity-generating method |
| CN114263509A (en) * | 2021-12-24 | 2022-04-01 | 中煤科工集团南京设计研究院有限公司 | Turbine reheating system based on molten salt heating |
-
2017
- 2017-12-28 CN CN201721887846.7U patent/CN207795326U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087047A (en) * | 2017-12-28 | 2018-05-29 | 江苏金通灵流体机械科技股份有限公司 | Turbine LP rotors and its electricity-generating method |
| CN114263509A (en) * | 2021-12-24 | 2022-04-01 | 中煤科工集团南京设计研究院有限公司 | Turbine reheating system based on molten salt heating |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226001 No. 135 Zhong Xiu Zhong Lu, Jiangsu, Nantong Patentee after: Jintongling Technology Group Co., Ltd. Address before: 226001 No. 135 Zhong Xiu Zhong Lu, Jiangsu, Nantong Patentee before: Jiangsu Jintongling Fluid Machinery Technology Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |