CN202187804U - Thermal power energy-saving system - Google Patents
Thermal power energy-saving system Download PDFInfo
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- CN202187804U CN202187804U CN 201120269141 CN201120269141U CN202187804U CN 202187804 U CN202187804 U CN 202187804U CN 201120269141 CN201120269141 CN 201120269141 CN 201120269141 U CN201120269141 U CN 201120269141U CN 202187804 U CN202187804 U CN 202187804U
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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 belongs to the technical field of thermal power, and particularly relates to a thermal power energy-saving system which comprises a boiler system, a main steam header, a back pressure steam turbine system and a user steam header, wherein the boiler system is connected with the main steam header; the back pressure steam turbine system is connected to the main steam header, and is connected with the user steam header; and an energy storage adjusting system parallel to the back pressure steam turbine system is arranged between the main steam header and the user steam header. Through the adoption of the thermal power energy-saving system, not only energy can be fully used, but also the operating safety of a steam turbine can be guaranteed, so as to guarantee the smooth operation of the whole system.
Description
Technical field
The utility model belongs to the thermal power technical field, relates in particular to a kind of thermal power energy conserving system.
Background technique
Thermoelectric (moving) coproduction is a kind of of national encourage growth general-purpose energy-saving technology.The enterprise of at present thermoelectric (moving) coproduction all adopts the technological process of boiler+Turbo-generator Set (dragging unit); And, have wave properties, and the restriction that receives the steam load regulation rate of boiler own seeing that the client of the inherent characteristic of thermoelectric (moving) industry decision is unstable with the vapour load; Especially some build ages enterprise relatively early in thermoelectricity (moving) coproduction enterprise; Steam turbine set can not all adopt the back pressure type, coagulates unit or pure condensate unit and need all or part of employing to take out, and satisfies the fluctuation of its user's steam flow through the change of the amount of drawing gas size; Remainder becomes condensed water through condenser condenses; And this part heat will be taken away through recirculating cooling water system, not only is equipped with powerful recycle pump and corresponding cooling pipe and cooling tower, also will cause the loss of steam energy.
Present high day by day along with electric coal price lattice, the enterprise of a lot of cogenerations of heat and power has been absorbed in boundary unable to make ends meet, on the verge of bankrupt, causes very big pressure for country and society; Country and society are to energy-saving and emission-reduction work pay attention to day by day in addition; A lot of R&D institutions, thermoelectricity (moving) coproduction enterprise are also carrying out various technological transformation and change by every means; Since back pressure turbine be in the steam turbine to a kind of type of using energy source fullest, a lot of enterprises or plan will originally take out and coagulate unit (or pure condensate unit) and be transformed into back pressure steam turbine group.While also has part unit or individual this problem to be begun one's study and proposes solution, such as notification number is: " the back pressure type generator set " of 201674346U; Notification number be 201517431U's " preposition back pressure machine drags compressor assembly " several patents all with regard to back pressure turbine make research and patent application.But in view of boiler, back pressure turbine, with vapour user's particular attribute; Existing system and technology can only partly adopt back pressure turbine and can not all be transformed into back pressure turbine; Otherwise; When the client changes with the vapour load; Because back pressure turbine does not possess the ability of load adjustment, thus all variations fluctuation all can rapid response in steam generator system, thereby cause the acute variation of boiler master vapour parameter; Load changing rate meet or exceed boiler maximum capacity the time, thereby must be with causing that the boiler superpressure beats safety valve or boiler and go out the vapour parameter and cross a series of economy, technology, safety problems such as the low steam parameter that causes getting into steam turbine is defective.
Summary of the invention
To the problems referred to above, the utility model provides and a kind ofly to greatest extent boiler institute producing steam is utilized, and can not cause violent fluctuation of load pressure to boiler, guarantee a kind of thermal power energy conserving system of boiler, steam turbine operation.The ratio that the gas portion of energy accounts for whole energy of coagulating that the moving () industry of conventional heat adopts takes out unit with fixed attention is not less than 25%; And behind employing the utility model; Can guarantee the smooth running of whole system; Guarantee the security of operation of steam generator system, back pressure turbine, in the whole system all behind the employing back pressure turbines, this part energy will all be utilized like this.
The technological scheme that the utility model adopts is: a kind of thermal power energy conserving system; Comprise steam generator system, the female pipe of main steam, back pressure turbine system and the female pipe of user's steam; Steam generator system links to each other with the female pipe of main steam; Be connected with the back pressure turbine system on the female pipe of main steam, the back pressure turbine system links to each other with the female pipe of user's steam, is provided with the accumulation of energy regulating system arranged side by side with back pressure turbine between female pipe of main steam and the female pipe of user's steam.Steam while steam accumulation of energy adjustment process arranged side by side the process of passing through the female pipe of back pressure turbine entering user's steam from the steam generator system discharge.After steam was discharged the female pipe of entering main steam from steam generator system, a part of steam got into the back pressure turbine system and is used for loads such as generator and other compressors; Another part then gets into the accumulation of energy adjustment process, and above-mentioned two-part steam finally all gets into the female pipe of user.
The accumulation of energy adjustment process comprises Boiler Steam accumulation of energy adjustment process and user's steam accumulation of energy adjustment process.Steam is in the whole system running; The user mainly is reflected on user's steam main-piping pressure with the vapour load variations; If when user's steam consumption was big, user's steam main-piping pressure reduced, the part steam in the accumulation of energy adjustment process then can get into the female pipe of user's steam in a large number to carry out steam and replenishes; If user's steam consumption reduces, user's steam main-piping pressure increases, and the flow that the part steam in the accumulation of energy adjustment process gets into the female pipe of user's steam reduces, and it is stable to keep user's steam main-piping pressure, thereby has guaranteed the stability and the Security of system's operation.
Under the operating mode that steam turbine does not move according to its back pressure parameter; Also can take place because the power of steam turbine needs fluctuation; Thereby what cause steam turbine goes out the vapour variable effect to the pressure surge of user with the female pipe of vapour, also needs accumulation of energy to regulate guaranteeing user's stable with the vapour parameter, and its front end steam that the steam turbine fluctuation causes (the female steam of managing of boiler export just) parameter variation; Then rely on accumulation of energy to regulate control and enter into the steam flow in the accumulator; Thereby avoid instantaneous steam fluctuation to cause the boiler load big ups and downs, exceed the restriction of boiler self load conciliation rate, cause the generation of dangerous accident.
Further, described accumulation of energy regulating system comprises reducing-and-cooling plant, accumulator and the adjusting stable-pressure device that connects through pipeline, and reducing-and-cooling plant links to each other with the female pipe of main steam, regulates stable-pressure device and links to each other with the female pipe of user's steam.Consider from safety and economic benefits two aspects, preferably be provided with reducing-and-cooling plant and regulate stable-pressure device between the female pipe of accumulator and main steam, make vapor pressure meet the correlation technique parameter of the accumulator that is adopted; Be provided with the adjusting stable-pressure device between the female pipe of accumulator and user's steam, make the pressure that gets into the female pipe of user's steam keep stable.Wherein, reducing-and-cooling plant also can adopt the back pressure unit to replace, and still, this back pressure unit outlet vapor pressure grade is with the non-grade of the pressure in other normal turbine systems, but employing is higher than its pressure rating far away.
In addition; Be provided with the reducing-and-cooling plant arranged side by side between female pipe of main steam and the female pipe of user's steam with the accumulation of energy regulating system; When the wherein cover steam turbine in the turbine system breaks down when needing maintenance, this reducing-and-cooling plant is put into operation as bypass, guarantee that user's steam consumption is protected.
Turn back in the steam generator system for fear of steam, regulate between stable-pressure device and the accumulator and be provided with one-way cock.Can connect through pipeline between the one-way cock; Get into the process of accumulator from the female pipe of main steam at steam; If the aperture of reducing-and-cooling plant is enough big; Have few part steam and directly get into the female pipe of user's steam, thereby alleviated the load of accumulator to a certain extent through regulating stable-pressure device.
The steam generator system that the present invention adopted, equipment such as accumulator, back pressure turbine system all adopt existing technology, all can from market, directly buy.
In sum, the accumulation of energy regulating system in the utility model not only can be regulated the female pipe of user's steam, also can regulate the female pipe of main steam, in whole thermal power energy conserving system, plays the effect of forming a connecting link.Energy-storage system is used with full back pressure turbine, has both made using energy source realize maximization, and the back pressure machine that helps again not regulate burden functional is regulated load, meets consumers' demand, and guarantees safe, stable, efficient, the smooth running of boiler turbine.All adopt back pressure turbine in the whole system; Existing thermoelectric (move) industry unit of major tuneup must be all or most of employing take out with fixed attention the perhaps present situation of condensing form; Can reduce investment outlay, the land seizure situation, more can make the whole capacity usage ratio of thermoelectricity (moving) industry improve 25 percentage points.
Description of drawings
Fig. 1 is the utility model structural representation;
Among the figure, 1, steam generator system, 2, the female pipe of main steam, 3, accumulator, 4, reducing-and-cooling plant, 5, one-way cock, 6, is pressed turbine system, 7, load, 8, the female pipe of user's steam, 9, the adjusting stable-pressure device.
Embodiment
A kind of thermal power energy conserving system; Comprise steam generator system, the female pipe of main steam, back pressure turbine system and the female pipe of user's steam; Steam generator system links to each other with the female pipe of main steam; Be connected with the back pressure turbine system on the female pipe of main steam, the back pressure turbine system links to each other with the female pipe of user's steam, is provided with the accumulation of energy regulating system arranged side by side with back pressure turbine between female pipe of main steam and the female pipe of user's steam.
A kind of thermal power energy conserving system; Comprise steam generator system, the female pipe of main steam, back pressure turbine system and the female pipe of user's steam; Steam generator system links to each other with the female pipe of main steam; Be connected with the back pressure turbine system on the female pipe of main steam, the back pressure turbine system links to each other with the female pipe of user's steam, is provided with the accumulation of energy regulating system arranged side by side with back pressure turbine between female pipe of main steam and the female pipe of user's steam.Described accumulation of energy regulating system comprises reducing-and-cooling plant, accumulator and the adjusting stable-pressure device that connects through pipeline; Reducing-and-cooling plant links to each other with the female pipe of main steam; Regulate stable-pressure device and link to each other, also be provided with the adjusting stable-pressure device between reducing-and-cooling plant and the accumulator with the female pipe of user's steam.In the present embodiment, reducing-and-cooling plant also can adopt the back pressure unit to replace, and still, this back pressure unit outlet vapor pressure grade is with the non-grade of the pressure in other normal turbine systems, but employing is higher than its pressure rating far away.
A kind of thermal power energy conserving system; Comprise steam generator system, the female pipe of main steam, back pressure turbine system and the female pipe of user's steam; Steam generator system links to each other with the female pipe of main steam, is connected with the back pressure turbine system on the female pipe of main steam, and the back pressure turbine system links to each other with the female pipe of user's steam; Be provided with the accumulation of energy regulating system arranged side by side between female pipe of main steam and the female pipe of user's steam, be provided with the temperature-decreased pressure reducer arranged side by side between female pipe of main steam and the female pipe of user's steam with the accumulation of energy regulating system with back pressure turbine.Described accumulation of energy regulating system comprises reducing-and-cooling plant, accumulator and the adjusting stable-pressure device that connects through pipeline; Reducing-and-cooling plant links to each other with the female pipe of main steam; Regulate stable-pressure device and link to each other, also be provided with the adjusting stable-pressure device between reducing-and-cooling plant and the accumulator with the female pipe of user's steam.
A kind of thermal power energy conserving system; Comprise steam generator system, the female pipe of main steam, back pressure turbine system and the female pipe of user's steam; Steam generator system links to each other with the female pipe of main steam, is connected with the back pressure turbine system on the female pipe of main steam, and the back pressure turbine system links to each other with the female pipe of user's steam; Be provided with the accumulation of energy regulating system arranged side by side between female pipe of main steam and the female pipe of user's steam, be provided with the temperature-decreased pressure reducer arranged side by side between female pipe of main steam and the female pipe of user's steam with the accumulation of energy regulating system with back pressure turbine.Described accumulation of energy regulating system comprises reducing-and-cooling plant, accumulator and the adjusting stable-pressure device that connects through pipeline, and reducing-and-cooling plant links to each other with the female pipe of main steam, regulates stable-pressure device and links to each other with the female pipe of user's steam.Be provided with pressure and temperature reducing and regulate stable-pressure device between the female pipe of accumulator and main steam; Be provided with the adjusting stable-pressure device between the female pipe of accumulator and user's steam.Regulate between stable-pressure device and the accumulator and be provided with one-way cock, connect through pipeline between the one-way cock.
During concrete work, from steam while steam accumulation of energy adjustment process arranged side by side during passing through the female process of managing of back pressure turbine entering user steam of steam generator system discharge.Steam is discharged from boiler; Through the female pipe of main steam; A part enters into the back pressure turbine system and is used for loads such as generator, and another part is regulated through carrying out accumulation of energy in the unidirectional entering accumulator of steam of pressure and temperature reducing, and final two-part steam all gets into the female pipe of user's steam.
According to the project situation, the female pipe of main steam and user's steam main-piping pressure are made as P1 and P3 respectively, according to the accumulation of energy ability of the accumulator of being selected for use, the post-decompression pressure of one-level is made as P2.
When the smooth running of back pressure turbine system,, cause the user to reduce with vapour main-piping pressure P3 if the female tube load of user's steam increases suddenly; The V3 valve with P3 as control signal; Must cause the V3 valve opening to increase, accumulator is put steam flow outward through one-way valve K2 and is increased, and keeps the stable of P3; When the female effective vapour load of user's steam reduces, cause the user to increase with vapour main-piping pressure P3, the V3 valve will reduce aperture, and one-way valve K2 is put steam flow outward and is reduced, and keeps the stable of P3.
Can not be stabilized under the steady operating mode at steam turbine and to move, and need make under the situation of adjusting, the working conditions change of steam turbine can cause the quantity of steam variable effect to pressure P 3 fluctuations of user with the female pipe of vapour, also needs accumulation of energy to regulate to guarantee user stablizing with the vapour parameter.The female pipe of the boiler export steam parameter acute variation that steam turbine adjustment simultaneously will cause; When the required load of back pressure turbine system diminishes, because the hysteresis quality of boiler adjustment, main steam main-piping pressure P1 will have the trend of increase; V1, V2 valve with P1, P2 as control signal; Aperture increases, and the steam in the female pipe of main steam just gets into the accumulation of energy regulating system through one-way valve K1 in a large number, and it is stable to keep P1; Otherwise when the required load of back pressure turbine system became big, as control signal, aperture reduced with P1, P2 for V1, V2 valve, and the steam in the female pipe of main steam gets into accumulation of energy regulating system flow and diminishes, and it is stable to keep P1.Thereby avoid instantaneous steam fluctuation to cause the boiler load big ups and downs, exceed the restriction of boiler self load conciliation rate, cause the generation of dangerous accident.
When the part back pressure turbine need overhaul in the back pressure turbine group system, in order to guarantee user's steam stable, a part of steam can directly get into the female pipe of user's steam through the pressure and temperature reducing process.
Claims (5)
1. thermal power energy conserving system; Comprise steam generator system, the female pipe of main steam, back pressure turbine system and the female pipe of user's steam; Steam generator system links to each other with the female pipe of main steam; Be connected with the back pressure turbine system on the female pipe of main steam, the back pressure turbine system links to each other with the female pipe of user's steam, it is characterized in that: be provided with the accumulation of energy regulating system arranged side by side with back pressure turbine between female pipe of main steam and the female pipe of user's steam.
2. thermal power energy conserving system according to claim 1; It is characterized in that: described accumulation of energy regulating system comprises reducing-and-cooling plant, accumulator and the adjusting stable-pressure device that connects through pipeline; Reducing-and-cooling plant links to each other with the female pipe of main steam, regulates stable-pressure device and links to each other with the female pipe of user's steam.
3. thermal power energy conserving system according to claim 2 is characterized in that: preferably be provided with pressure and temperature reducing and regulate stable-pressure device between the female pipe of described accumulator and main steam; Be provided with the adjusting stable-pressure device between the female pipe of accumulator and user's steam.
4. according to claim 1 or 2 or 3 described thermal power energy conserving systems, it is characterized in that: be provided with the reducing-and-cooling plant arranged side by side between female pipe of described main steam and the female pipe of user's steam with the accumulation of energy regulating system.
5. a kind of thermal power energy conserving system according to claim 4 is characterized in that: be provided with one-way cock between described adjusting stable-pressure device and the accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120269141 CN202187804U (en) | 2011-07-27 | 2011-07-27 | Thermal power energy-saving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120269141 CN202187804U (en) | 2011-07-27 | 2011-07-27 | Thermal power energy-saving system |
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| CN202187804U true CN202187804U (en) | 2012-04-11 |
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| CN 201120269141 Expired - Fee Related CN202187804U (en) | 2011-07-27 | 2011-07-27 | Thermal power energy-saving system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313275A (en) * | 2011-07-27 | 2012-01-11 | 日照鲁信金禾生化有限公司 | Thermal power energy-saving process and system |
| CN105756729A (en) * | 2016-04-18 | 2016-07-13 | 国电科学技术研究院 | Supercritical or ultra-supercritical coal-fired electricity generation system adopting main mode |
| CN109915222A (en) * | 2019-03-08 | 2019-06-21 | 济南市琦泉热电有限责任公司 | Cascade utilization power plant medium pressure steam opposite direction conveying device and method |
-
2011
- 2011-07-27 CN CN 201120269141 patent/CN202187804U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313275A (en) * | 2011-07-27 | 2012-01-11 | 日照鲁信金禾生化有限公司 | Thermal power energy-saving process and system |
| CN102313275B (en) * | 2011-07-27 | 2014-03-26 | 日照鲁信金禾生化有限公司 | Thermal power energy-saving process and system |
| CN105756729A (en) * | 2016-04-18 | 2016-07-13 | 国电科学技术研究院 | Supercritical or ultra-supercritical coal-fired electricity generation system adopting main mode |
| CN109915222A (en) * | 2019-03-08 | 2019-06-21 | 济南市琦泉热电有限责任公司 | Cascade utilization power plant medium pressure steam opposite direction conveying device and method |
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| 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: 20120411 Termination date: 20140727 |
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| EXPY | Termination of patent right or utility model |