CN202914145U - New shafting of gas-steam combined cycle 'one-on-one' unit - Google Patents
New shafting of gas-steam combined cycle 'one-on-one' unit Download PDFInfo
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- CN202914145U CN202914145U CN2012203563067U CN201220356306U CN202914145U CN 202914145 U CN202914145 U CN 202914145U CN 2012203563067 U CN2012203563067 U CN 2012203563067U CN 201220356306 U CN201220356306 U CN 201220356306U CN 202914145 U CN202914145 U CN 202914145U
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- combined cycle
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- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The utility model discloses a new shafting of a gas-steam combined cycle 'one-on-one' unit. According to the new shafting of the gas-steam combined cycle 'one-on-one' unit, a shafting of a traditional 'one-on-one' gas-steam combined cycle coaxial unit is rearranged, a generator is disposed at the middle position, two ends of the generator are connected with a gas compressor side of a gas turbine and a high pressure cylinder side of a steam turbine respectively, a low pressure rotor of the steam turbine is connected with the unit through a clutch, and connection and disconnection of the low pressure rotor and the unit can be achieved through the clutch. By means of unit shafting arrangement, backpressure, extraction condensing and pure condensing operation of the gas-steam combined cycle 'one-on-one' coaxial unit can be achieved, higher whole thermal efficiencies can be achieved during heating of the unit, unit heating capacity is improved, advantages of the 'one-on-one' coaxial unit are not influenced, and better energy-saving and peak shaving effects of the unit can be achieved.
Description
One, technical field
The utility model belongs to electrical equipment technical field, particularly relating to combustion gas--Steam Combined Cycle " one-to-one " unit mechanical driver unit utilizes the utility model shaft system arrangement can reach energy-conservation when the generating heating and improves heat capacity, and can keep the quick load adjustment capability of " one-to-one " coaxial unit.
Two, background technique
Combustion gas--Steam Combined Cycle unit is because its pollutant emission is little, efficiency of energy utilization is high and the fireballing characteristics of load adjustment, and the in recent years application in power industry is a dark horse.Combustion gas--Steam Combined Cycle unit is also ripe gradually in the technology that realizes cogeneration of heat and power, but tradition " one-to-one " unit can be subject to the problem of heat supply energy dissipation and equipment attrition when realizing maximum heat capacity operating mode.
Three, model utility content
The utility model is to tradition " one-to-one " combustion gas--the axle system of Steam Combined Cycle unit rearranges, with " one-to-one " combustion gas--low pressure rotor and the unit of Steam Combined Cycle unit carry out flexible connection, can according to the needs of thermoelectricity ratio the high pressure rotor be broken away from low pressure rotor or link to each other when making unit operation, realize the turbine back pressure of " one-to-one " combustion gas-Steam Combined Cycle unit, pure condensate or take out solidifying operation, particularly under the back pressure operation pattern, low pressure (LP) cylinder and machine group rotor can be broken away from, the air blast friction of avoiding low pressure rotor to run up and produce namely can improve unit overall thermal efficient and heat capacity by stopping the low pressure (LP) cylinder admission.
The utility model is realized above-mentioned purpose by following arrangement:
The new shaft system arrangement scheme of combustion gas--Steam Combined Cycle " one-to-one " unit is in the centre with generator arrangements, the two ends of generator are rigidly connected with the pusher side of calming the anger, the steam turbine high-pressure cylinder side of gas turbine respectively, generator realizes that double dynamical two ends provide torque simultaneously, steam turbine high pressure rotor links to each other by clutch with low pressure rotor, clutch can realize that by self mechanism two ends break away from or link to each other, the disengaging that realizes high pressure rotor and low pressure rotor with link to each other.
In the unit pure condensate or take out solidifying mode when moving, low pressure rotor to unit output torque, makes generator export more electric energy by clutch and equidirectional, the same rotation speed operation of machine group rotor, the normal admission of low pressure (LP) cylinder this moment, the vapour condenser that the low pressure (LP) cylinder steam discharge enters high vacuum condenses.
When unit realizes that the back pressure mode is moved, the intermediate pressure cylinder steam discharge no longer enters the low pressure (LP) cylinder acting, low pressure rotor is realized breaking away from the machine group rotor that runs up by clutch, produce the air blast frictional loss thereby avoid low pressure rotor to run up, namely can improve generatine set heat efficiency by stopping the low pressure (LP) cylinder admission, increase to greatest extent heat capacity, improve the thermoelectric ratio of unit.And the vapour condenser that links to each other with low pressure (LP) cylinder can be realized low-vacuum-operating, the auxiliary power consumption of minimizing circulating water pump.Low pressure rotor can also lead to the slow-speed of revolution operation of the sticking shear force realization self of clutch internal lubrication oil, avoids the low pressure (LP) cylinder rotor to produce for a long time flexural buckling.
Low pressure rotor can with turning to running, also can break away from unit with rotating speed with high pressure rotor, generator amature, gas turbine rotor, independent slow-speed of revolution running, the back pressure operation when realizing the steam turbine heating.
Four, description of drawings
Accompanying drawing 1 is combustion gas--the new shaft system arrangement schematic diagram of Steam Combined Cycle " one-to-one " unit, and among the figure: 1 is the gas turbine rotor bearing; 2 is the generator amature bearing; 3 is steam turbine high pressure rotor bearing; 4 is the Low Pressure Steam Turbine bearing; 5 is the turning gear of unit device; 6 is high pressure main stop valve; 7 is middle pressure main stop valve; 8 is the low pressure main stop valve; 9 for drawing gas to the heat supply network main stop valve; 10 is low pressure (LP) cylinder admission main stop valve; 11 is clutch; M is the jiggering motor.
Five, embodiment
Further specify below in conjunction with 1 pair of method of operation of accompanying drawing:
As shown in fig. 1, generator arrangements is between gas turbine and steam turbine, its two ends of rotor is rigidly connected with the high-pressure cylinder side rotor of calm the anger pusher side rotor and the steam turbine of gas turbine respectively, and Low Pressure Steam Turbine and high pressure rotor are by the clutch flexible connection.
When unit moves in the pure condensate mode, draw gas to heat supply network main stop valve 9 and close, low pressure (LP) cylinder admission main stop valve 10 standard-sized sheets, intermediate pressure cylinder steam discharge and low pressure master vapour all enter the low pressure (LP) cylinder acting by low pressure (LP) cylinder admission main stop valve 10, the same rotating speed of low pressure rotor and unit, same turning to generator output torque.
Unit is being taken out solidifying mode when moving, draw gas to heat supply network main stop valve 9 and low pressure (LP) cylinder admission main stop valve 10 and open simultaneously certain aperture according to needs separately, intermediate pressure cylinder steam discharge and a low pressure master vapour part enter the heat exchangers for district heating heating, a part enters the low pressure (LP) cylinder acting, low pressure rotor and unit, compare to the aperture different adjustment unit of heat supply network main stop valve 9 and low pressure (LP) cylinder admission main stop valve 10 is thermoelectric according to drawing gas with turning to generator output torque with rotating speed.
When unit moves in the back pressure mode, draw gas to heat supply network main stop valve 9 and open gradually greatly, low pressure (LP) cylinder admission main stop valve 10 turns down gradually, when the low pressure (LP) cylinder admission is not enough to support low pressure rotor and unit with rotation speed operation, clutch since self function with low pressure rotor and unit disengaging, low pressure (LP) cylinder admission main stop valve 10 Close Alls, low pressure rotor is because the function of clutch keeps slow-speed of revolution running, so namely avoid low pressure rotor to produce the air blast frictional loss, can prevent the rotor flexural buckling again, and the steam that originally was used for the low pressure rotor cooling can enter heat exchangers for district heating and exports more heat energy.This moment, the low pressure (LP) cylinder exhaust stage blade was no longer considered main vapour humidity effect and the impact of acting back pressure owing to no longer admission of low pressure (LP) cylinder, and vapour condenser can be realized low-vacuum-operating, reduces the auxiliary power consumption of circulating water pump.
Unit is in when stopping standby state, and turning gear of unit device 5 can drive low pressure rotor, and drives integral rotor maintenance slow-speed of revolution running by clutch, prevents that the integrated machine group rotor from producing flexural buckling.
Claims (5)
1. the new axle of combustion gas--Steam Combined Cycle " one-to-one " unit system is characterized in that generator arrangements in the centre, and two ends are rigidly connected with the pusher side of calming the anger, the steam turbine high-pressure cylinder side of gas turbine respectively.
2. combustion gas according to claim 1--the new axle of Steam Combined Cycle " one-to-one " unit system is characterized in that the high pressure rotor of steam turbine links to each other by clutch with low pressure rotor.
3. combustion gas according to claim 1--the new axle of Steam Combined Cycle " one-to-one " unit system, the torque-demand that it is characterized in that generator is provided simultaneously by gas turbine and the steam turbine at two ends.
4. combustion gas according to claim 2--the new axle of Steam Combined Cycle " one-to-one " unit system, it is characterized in that low pressure rotor can turn to together running with rotating speed with high pressure rotor, generator amature, gas turbine rotor, also can break away from unit, independent slow-speed of revolution running, the back pressure operation when realizing the steam turbine heating.
5. combustion gas according to claim 4--the new axle of Steam Combined Cycle " one-to-one " unit system, when it is characterized in that low pressure rotor breaks away from unit independence slow-speed of revolution running, back pressure operation during the steam turbine heating, low pressure (LP) cylinder is admission no longer, and the vapour condenser that links to each other with low pressure (LP) cylinder can be realized low-vacuum-operating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203563067U CN202914145U (en) | 2012-07-23 | 2012-07-23 | New shafting of gas-steam combined cycle 'one-on-one' unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203563067U CN202914145U (en) | 2012-07-23 | 2012-07-23 | New shafting of gas-steam combined cycle 'one-on-one' unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914145U true CN202914145U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203563067U Expired - Fee Related CN202914145U (en) | 2012-07-23 | 2012-07-23 | New shafting of gas-steam combined cycle 'one-on-one' unit |
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| CN (1) | CN202914145U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343474A (en) * | 2013-07-26 | 2015-02-11 | 华能北京热电有限责任公司 | Steam turbine, gas-steam combined cycle unit and running method of cycle unit |
| CN107202355A (en) * | 2017-06-06 | 2017-09-26 | 大唐东北电力试验研究所有限公司 | High back pressure birotor electric heating unit heating system |
-
2012
- 2012-07-23 CN CN2012203563067U patent/CN202914145U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343474A (en) * | 2013-07-26 | 2015-02-11 | 华能北京热电有限责任公司 | Steam turbine, gas-steam combined cycle unit and running method of cycle unit |
| CN107202355A (en) * | 2017-06-06 | 2017-09-26 | 大唐东北电力试验研究所有限公司 | High back pressure birotor electric heating unit heating system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20140723 |
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| EXPY | Termination of patent right or utility model |