CN210035651U - High-parameter heat supply system of steam turbine - Google Patents
High-parameter heat supply system of steam turbine Download PDFInfo
- Publication number
- CN210035651U CN210035651U CN201920705360.XU CN201920705360U CN210035651U CN 210035651 U CN210035651 U CN 210035651U CN 201920705360 U CN201920705360 U CN 201920705360U CN 210035651 U CN210035651 U CN 210035651U
- Authority
- CN
- China
- Prior art keywords
- steam
- turbine
- back pressure
- boiler
- outlet end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Turbines (AREA)
Abstract
The application discloses a high-parameter heat supply system of a steam turbine, which comprises a high-pressure heater group, a No. 0 high heater, a boiler, a dust remover, an induced draft fan, a back pressure steam turbine and a heat consumer; the steam inlet end of the back pressure steam turbine is connected with the steam outlet end of the boiler for generating main steam or low-temperature superheated steam; a first steam outlet end of the back pressure steam turbine is connected with a hot user, and a second steam outlet end of the back pressure steam turbine is connected with a 0 # Gaojia; the power output end of the back pressure turbine is connected with the driving input end of the induced draft fan; the boiler, the dust remover and the induced draft fan are connected in sequence; the water inlet end of the No. 0 high heater is connected with the high-pressure heater group; the water outlet end of the No. 0 high boiler is connected with the inlet of an economizer of the boiler. By additionally arranging the No. 0 high pressure steam turbine, the problem that the steam inlet quantity and the steam outlet quantity of the back pressure steam turbine are not easy to match in the prior art is solved.
Description
Technical Field
The application relates to the technical field of high-parameter heat supply of steam turbines, in particular to a high-parameter heat supply system of a steam turbine.
Background
The state advocates greatly that the produced condenser unit is subjected to heat supply transformation. The steam pressure required by part of heat users is very high, even the first-stage regenerative steam extraction of the supercritical unit cannot meet the requirement of the heat users on the steam pressure, and therefore, the main steam or the low-temperature superheated steam can only be used for temperature reduction and pressure reduction and then is supplied to the heat users. The main steam or the low-temperature superheated steam is used for supplying heat to the outside, so that the combined heat and power generation effect of the unit is greatly weakened, and the efficiency of improving the unit is extremely limited.
The common method is to install a backpressure machine, and supply heat to the outside after the main steam or the low-temperature superheated steam works through the backpressure machine. The back press can drive a small generator, but the installation of the generator requires increased investment. Along with the deep popularization and execution of environmental protection transformation, the capacity of the boiler induced draft fan after being combined with the booster fan is increased, the boiler induced draft fan can be driven by the back pressure machine, the steam inlet amount of the back pressure machine is influenced by the requirements of external hot users and the output of the induced draft fan, and the capacity is not easy to match. When the demand of a hot user is small and the coal-fired unit operates at a low load, the temperature of feed water is reduced to reduce the temperature of flue gas at the outlet of the economizer, the requirement of the SCR denitration device for the lowest temperature of the flue gas at the ammonia spraying can not be met, denitration equipment can be withdrawn from operation, the denitration effect is influenced, and the pollution to the environment to a certain degree is certainly caused.
Disclosure of Invention
An object of this application is to provide a steam turbine high parameter heating system, solves the difficult problem that matches of the steam admission volume and the play steam volume of back pressure steam turbine.
In view of the above, the application provides a high-parameter heating system for a steam turbine, which is characterized by comprising a high-pressure heater group, a 0 # high pressure heater, a boiler, a dust remover, an induced draft fan, a back pressure steam turbine and a heat consumer;
the steam inlet end of the back pressure steam turbine is connected with the steam outlet end of the boiler for generating main steam or low-temperature superheated steam; a first steam outlet end of the back pressure steam turbine is connected with the hot user, and a second steam outlet end of the back pressure steam turbine is connected with the No. 0 Gaojia; the power output end of the back pressure turbine is connected with the driving input end of the induced draft fan;
the boiler, the dust remover and the induced draft fan are connected in sequence;
the water inlet end of the No. 0 high heater is connected with the high-pressure heater group; and the water outlet end of the No. 0 high heater is connected with an inlet of an economizer of the boiler.
Preferably, the system further comprises a turbine bypass valve;
the turbine bypass valve is connected between the steam inlet end and the first steam outlet end.
Preferably, a temperature reducing valve is further included;
the temperature reducing valve is arranged between the water outlet end of the No. 0 high heater and the first steam outlet end and is positioned at the downstream of the turbine bypass valve.
Preferably, the 0 # plus hydrophobic end is connected with the high-pressure heater group.
Compared with the prior art, the embodiment of the application has the advantages that:
in the embodiment of the application, a high-parameter heating system of a steam turbine is provided, and the high-parameter heating system is characterized in that a 0 # high heater is additionally arranged and is respectively connected with a second steam outlet end of a back pressure steam turbine, a water outlet end of a high-pressure heater group and an economizer inlet of a boiler to form a loop, so that the problem that the steam inlet amount and the steam outlet amount of the back pressure steam turbine are not easily matched in the prior art is solved, the energy utilization rate is improved, and the pollution to the environment is reduced.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a steam turbine high-parameter heating system according to an embodiment of the present application.
Reference numbers: a high-pressure heater group 1; number 0 higher by 2; a boiler 3; a dust remover 4; an induced draft fan 5; a back pressure turbine 6; a turbine power control valve 7; a turbine bypass valve 8; a temperature-reducing valve 9; the user 10 is warmed.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The application provides a high parameter heating system of steam turbine.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a steam turbine high-parameter heating system according to an embodiment of the present application, including: high pressure heater group 1, 0 number height with 2, boiler 3, dust remover 4, draught fan 5, back pressure turbine 6 and hot user 10.
The steam inlet end of the back pressure turbine 6 is connected with the steam outlet end of the boiler 3 for generating main steam or low-temperature superheated steam, and receives the main steam or the low-temperature superheated steam generated by the boiler 3.
A first steam outlet end of the back pressure turbine 6 is connected with a heat consumer 10 and used for supplying heat to the heat consumer 10; the second steam outlet end is connected with a No. 0 high plus 2. That is, the steam exhaust of the back pressure turbine 6 has two directions, one is a hot user 10 and the other is 0 # up plus 2. When the external heat user 10 does not need to use steam, the exhausted steam of the back pressure steam turbine 6 enters No. 0 and is increased by 2; when the steam consumption of the external heat consumer 10 is large, the exhausted steam of the back pressure turbine 6 is completely supplied to the heat consumer 10, and at the moment, the No. 0 high pressure steam 2 is not fed, and the water supply is not heated.
Through addding No. 0 height and adding 2, the admission of back pressure turbine 6, the steam discharge need not to change according to hot user 10's requirement, only need maintain a stable value, and No. 0 height will be carried to unnecessary heat and adds 2, has avoided back pressure turbine 6 low-load operation, leads to the coal-fired unit low-load operation of boiler 10, and then influences the denitration effect and leads to environmental pollution's problem.
The power output end of the back pressure turbine 6 is connected with the driving input end of the induced draft fan 5 and is used for driving the induced draft fan 5; the boiler 3, the dust remover 4 and the induced draft fan 5 are connected in sequence.
The water inlet end of the No. 0 high heater 2 is connected with the high-pressure heater group 1, and the water outlet end is connected with the coal economizer inlet of the boiler 3. The high-pressure heater group 1 heats water in a first stage, and the No. 0 high heater group 2 further heats water finally entering the boiler 3 through heat conveyed by a second steam outlet end of the back pressure turbine 6. When the heat required by the heat consumer 10 is small, the steam heat received by the 0 # high plus 2 is large, and the water is heated and flows to the economizer of the boiler 3 to form a circulation.
The steam turbine high parameter heating system that this application embodiment provided, through having add 0 number height and adding 2, and with 0 number height add 2 respectively with the second steam outlet end of backpressure steam turbine 6, the water outlet end of high pressure heater group 1 and the economizer entry linkage of boiler 3, constitute the return circuit, the problem of the difficult matching of steam admission volume and the play steam volume of backpressure steam turbine 6 that leads to through adjusting steam turbine power control valve 7 and adjusting hot user's function among the prior art has been solved, energy utilization is improved, the pollution to the environment has been reduced.
Further, the steam turbine bypass valve 8 is connected between the steam inlet end and the first steam outlet end of the back pressure steam turbine 6. When the steam consumption of the external heat consumer 10 is large, the exhaust steam of the back pressure turbine 6 cannot meet the requirement of the heat consumer 10, at the moment, the No. 0 plus 2 does not enter the steam, and the turbine bypass valve 8 is partially opened to supplement the external steam supply. Meanwhile, the turbine bypass valve 8 also has a pressure reduction function, so that the pressure of the steam passing through the turbine bypass valve 8 is consistent with the exhaust pressure of the back pressure turbine 6.
Further, a temperature reducing valve 9 is also included. The temperature reducing valve 9 is arranged between the water outlet end of the No. 0 Gao 2 and the first steam outlet end of the back pressure turbine 6, is positioned at the downstream of the turbine bypass valve 8, and is used for participating in controlling the temperature of externally supplied heat steam and utilizing the water outlet of the No. 0 Gao 2 to supply water for temperature reduction according to the requirement of a user. The water draining end with the height of 0 plus 2 is connected with a high-pressure heater group 1 for draining water step by step.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (4)
1. A high-parameter heating system of a steam turbine is characterized by comprising a high-pressure heater group, a No. 0 high heater, a boiler, a dust remover, an induced draft fan, a back pressure steam turbine and a heat consumer;
the steam inlet end of the back pressure steam turbine is connected with the steam outlet end of the boiler for generating main steam or low-temperature superheated steam; a first steam outlet end of the back pressure steam turbine is connected with the hot user, and a second steam outlet end of the back pressure steam turbine is connected with the No. 0 Gaojia; the power output end of the back pressure turbine is connected with the driving input end of the induced draft fan;
the boiler, the dust remover and the induced draft fan are connected in sequence;
the water inlet end of the No. 0 high heater is connected with the high-pressure heater group; and the water outlet end of the No. 0 high heater is connected with an inlet of an economizer of the boiler.
2. The turbine high parameter heating system of claim 1, further comprising a turbine bypass valve;
the turbine bypass valve is connected between the steam inlet end and the first steam outlet end.
3. The steam turbine high parameter heating system of claim 2, further comprising a desuperheating valve;
the temperature reducing valve is arranged between the water outlet end of the No. 0 high heater and the first steam outlet end and is positioned at the downstream of the turbine bypass valve.
4. The turbine high parameter heating system of claim 1, wherein the No. 0 plus hydrophobic end is connected to the high pressure heater bank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920705360.XU CN210035651U (en) | 2019-05-16 | 2019-05-16 | High-parameter heat supply system of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920705360.XU CN210035651U (en) | 2019-05-16 | 2019-05-16 | High-parameter heat supply system of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210035651U true CN210035651U (en) | 2020-02-07 |
Family
ID=69365879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920705360.XU Active CN210035651U (en) | 2019-05-16 | 2019-05-16 | High-parameter heat supply system of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210035651U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396855A (en) * | 2020-04-16 | 2020-07-10 | 西安热工研究院有限公司 | Grading control and operation method for power station unit No. 0 high under multi-working-condition operation |
| CN112460668A (en) * | 2020-12-01 | 2021-03-09 | 福建晋江热电有限公司 | Undisturbed heat storage system and method for peak valley filling of back pressure type heat supply unit |
| CN114198172A (en) * | 2021-11-12 | 2022-03-18 | 西安西热节能技术有限公司 | Additional high-pressure backpressure unit small-flow heat supply system and method |
-
2019
- 2019-05-16 CN CN201920705360.XU patent/CN210035651U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396855A (en) * | 2020-04-16 | 2020-07-10 | 西安热工研究院有限公司 | Grading control and operation method for power station unit No. 0 high under multi-working-condition operation |
| CN111396855B (en) * | 2020-04-16 | 2021-07-20 | 西安热工研究院有限公司 | Grading control and operation method for power station unit No. 0 high under multi-working-condition operation |
| CN112460668A (en) * | 2020-12-01 | 2021-03-09 | 福建晋江热电有限公司 | Undisturbed heat storage system and method for peak valley filling of back pressure type heat supply unit |
| CN112460668B (en) * | 2020-12-01 | 2022-06-14 | 福建晋江热电有限公司 | Undisturbed heat storage system and method for peak valley filling of back pressure type heat supply unit |
| CN114198172A (en) * | 2021-11-12 | 2022-03-18 | 西安西热节能技术有限公司 | Additional high-pressure backpressure unit small-flow heat supply system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210035651U (en) | High-parameter heat supply system of steam turbine | |
| CN101684748B (en) | Integrated gas turbine exhaust diffuser and heat recovery steam generation system | |
| US8839621B2 (en) | Hybrid power plant | |
| EP1752617A2 (en) | Combined cycle power plant | |
| US20100180567A1 (en) | Combined Power Augmentation System and Method | |
| CN111852597A (en) | Variable-parameter multi-element cascade thermoelectric decoupling system of thermal power heat supply unit and adjusting method | |
| CN206972383U (en) | A kind of heated by natural gas system for Combined cycle gas-steam turbine | |
| CN113375208A (en) | Heat supply method, system and device of coal-fired unit coupling absorption heat pump | |
| Liu et al. | Thermodynamic optimization of coal-fired combined heat and power (CHP) systems integrated with steam ejectors to achieve heat–power decoupling | |
| CN112856363B (en) | System and method for improving heat supply steam parameters of deep peak shaving heat supply unit | |
| Jiang et al. | Thermal performance study of tower solar aided double reheat coal-fired power generation system | |
| CN114704815A (en) | Vapor heat storage system | |
| CN101956607B (en) | Ammonia injection system for peaker cycle | |
| CN212296519U (en) | Variable-parameter multi-element cascade thermoelectric decoupling system of thermal power heat supply unit | |
| CN206129338U (en) | Gas - steam combined cycle distributing type energy supply system | |
| CN113375211A (en) | Coal-fired unit heating system and operation method | |
| CN209761562U (en) | Combined cycle power generation system | |
| Wołowicz et al. | Gas turbine selection for feedwater repowering. | |
| CN218151092U (en) | Thermal power plant steam turbine backpressure steam extraction energy cascade utilization system | |
| JPH1061413A (en) | Exhaust reburning type compound power plant | |
| CN214007247U (en) | Thermodynamic system capable of flexibly adjusting medium-low pressure steam supply | |
| JP2000110511A (en) | Cogeneration method and its system | |
| CN209469458U (en) | A kind of back pressure type heat supply steam turbine energy conservation regulating system | |
| CN202101225U (en) | Full-load high-efficiency system for recovering heat and heating inlet air of boiler | |
| Jordal et al. | New possibilities for combined cycles through advanced steam technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Patentee after: China Southern Power Grid Power Technology Co.,Ltd. Address before: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Patentee before: GUANGDONG ELECTRIC POWER SCIENCE RESEARCH INSTITUTE ENERGY TECHNOLOGY Co.,Ltd. |