CN112855295A - Backheating type driving small steam turbine system - Google Patents
Backheating type driving small steam turbine system Download PDFInfo
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- CN112855295A CN112855295A CN202011640337.0A CN202011640337A CN112855295A CN 112855295 A CN112855295 A CN 112855295A CN 202011640337 A CN202011640337 A CN 202011640337A CN 112855295 A CN112855295 A CN 112855295A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
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Abstract
The invention discloses a regenerative drive small steam turbine system, which comprises a control system unit, a small steam turbine system unit and a boiler water supply system unit, wherein the control system unit is used for controlling the regenerative drive small steam turbine system unit; according to the invention, the control system unit can effectively implement water supply demand detection and control on the boiler water supply system unit, the water supply pump system unit and the small steam turbine system unit can directly implement water supply control and delivery on the boiler water supply system unit, the heat recovery system unit and the air cooling system unit arranged between the water supply pump system unit and the boiler water supply system unit can implement heat recovery treatment on water supply in the boiler water supply system unit and implement real-time control on the control system unit, and the small steam turbine switching system can implement alternate control on the pure condensing small steam turbine and the pure back pressure small steam turbine, so that the operation time sequence of the small steam turbine system unit is effectively improved, and the defects in the prior art are effectively overcome.
Description
Technical Field
The invention relates to the technical field of small steam turbine systems, in particular to a regenerative drive small steam turbine system.
Background
From the perspective of heat transfer, the efficiency of the boiler during low temperature operation should be improved (note that the rated output requirement of the boiler does not change at this time), because the temperature difference of the media (flue gas and water) on both sides of the heat exchange surface becomes great at this time, which is beneficial to heat transfer, the inlet boiler is often pushed away from just in a low temperature common supply mode, because this time the efficiency is high, the steam source of the small steam turbine has three types: the new steam, the cold reheat steam and the intermediate pressure cylinder extraction steam, in order to adapt to the requirement of low load, the small steam turbine is provided with a low-pressure extraction steam source which normally runs, and a high-pressure steam source which is used in low load and is led from a high-pressure new steam main pipe or a high-pressure cylinder exhaust steam, so that the problem of steam inlet switching modes of two steam sources exists, and the switching of the steam source of the common small steam turbine has two modes: high pressure steam switches in switching and the new steam outward, and the theory of operation and the body structure of the little steam turbine of drive feed pump are the same basically with main steam turbine, however, the job task of little steam turbine is the drive feed pump, must satisfy the required water supply requirement of boiler, consequently, the operation mode of little steam turbine is very different with main steam turbine, still has certain not enough at the time of actual management and control application to the little steam turbine system of backheating formula drive that the boiler supplied water among the prior art, for example:
the small steam turbine system in the prior art is difficult to control the time sequence effect effectively when implementing the management and control processing to the boiler feed water to make the boiler feed water be difficult to effectual reaching time sequence nature when implementing the application and so be difficult to satisfy prior art needs.
Disclosure of Invention
The invention aims to provide a regenerative drive small steam turbine system to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a little steam turbine system of backheating formula drive, includes control system unit, little steam turbine system unit and boiler water supply system unit, control system unit electric signal connection has little steam turbine system unit, water-feeding pump system unit, boiler water supply system unit, backheat system unit and air cooling system unit, little steam turbine system unit and water-feeding pump system unit electric signal connection, water-feeding pump system unit and boiler water supply system unit electric signal connection, and water-feeding pump system unit and backheat system unit electric signal connection, boiler water supply system unit and backheat system unit electric signal connection, backheat system unit and air cooling system unit electric signal connection.
Preferably, the small steam turbine system unit further comprises a small steam turbine switching system, the control system unit is in electric signal connection with the small steam turbine switching system, and the small steam turbine switching system is in electric signal connection with the small steam turbine system unit.
Preferably, the control system unit further comprises a data transceiver module and a data processing module, the control system unit is internally and fixedly connected with the data transceiver module and the data processing module through screws, and the data transceiver module is in electric signal connection with the data processing module.
Preferably, the control system unit further comprises a data storage module and a data conversion module, the data storage module and the data conversion module are fixedly connected inside the control system unit through screws, and the data conversion module is in electric signal connection with the data storage module.
Preferably, the small steam turbine system unit further comprises a pure condensing type small steam turbine and a pure back pressure type small steam turbine, the small steam turbine system unit is electrically connected with the pure condensing type small steam turbine and the pure back pressure type small steam turbine, and the pure condensing type small steam turbine and the pure back pressure type small steam turbine are independent small steam turbines.
Preferably, the feed pump system unit is electrically connected with the feed pump body, and the boiler water supply system unit is electrically connected with the boiler water supply detection system.
Preferably, the heat recovery system unit further comprises a reheating supply system and a heat recovery monitoring system, the heat recovery system unit is electrically connected with the reheating supply system and the heat recovery monitoring system, and the heat recovery monitoring system is electrically connected with the reheating supply system.
Preferably, the air cooling system unit is electrically connected to an air cooling system, and the air cooling system is used as a cooling control system of the regenerative system unit.
Preferably, the control system unit is used as a management and control system of the small steam turbine system unit, the feed pump system unit, the boiler water supply system unit, the regenerative system unit, the air cooling system unit and the small steam turbine switching system.
Preferably, the small steam turbine switching system is respectively connected with a pure condensing small steam turbine and a pure back pressure small steam turbine switching management and control system.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the control system unit can effectively implement water supply demand detection and control on the boiler water supply system unit, the water supply pump system unit and the small steam turbine system unit can directly implement water supply control and delivery on the boiler water supply system unit, the heat recovery system unit and the air cooling system unit arranged between the water supply pump system unit and the boiler water supply system unit can implement heat recovery treatment on water supply in the boiler water supply system unit and implement real-time control on the control system unit, and the small steam turbine switching system can implement alternate control on the pure condensing small steam turbine and the pure back pressure small steam turbine, so that the operation time sequence of the small steam turbine system unit is effectively improved, and the defects in the prior art are effectively overcome.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of a control system unit according to the present invention;
FIG. 3 is a block diagram of a small steam turbine system according to the present invention;
FIG. 4 is a structural view of a water supply system unit of the boiler of the present invention;
fig. 5 is a structural diagram of a regenerative system unit according to the present invention.
In the figure: 1-a control system unit; 11-a data transceiver module; 12-a data processing module; 13-a data storage module; 14-a data conversion module; 2-small steam turbine system units; 21-a pure condensing type small steam turbine; 22-pure back pressure type small steam turbine; 3-a feed pump system unit; 31-feed water pump body; 4-boiler water supply system unit; 41-boiler water supply detection system; 5-a regenerative system unit; 51-reheat supply system; 52-a regenerative monitoring system; 6-air cooling system unit; 61-air cooling system; 7-small turbine switching system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
The first embodiment is as follows:
referring to fig. 1-5, the present invention provides a technical solution: a regenerative drive small steam turbine system comprises a control system unit 1, a small steam turbine system unit 2 and a boiler water supply system unit 4, wherein the control system unit 1 is in electric signal connection with the small steam turbine system unit 2, a water supply pump system unit 3, the boiler water supply system unit 4, a regenerative system unit 5 and an air cooling system unit 6, the small steam turbine system unit 2 can effectively realize start and stop control during the operation of a small steam turbine, the small steam turbine system unit 2 is in electric signal connection with the water supply pump system unit 3, the water supply pump system unit 3 can effectively implement water supply control on the water supply demand of the boiler, so that the boiler water supply system unit 4 can effectively pair the water supply pump system unit 3 to implement water supply control of the small steam turbine system unit 2, the water supply pump system unit 3 is in electric signal connection with the boiler water supply system unit 4, the feed water pump system unit 3 is in electrical signal connection with the heat recovery system unit 5, the heat recovery system unit 5 can implement water supply heat recovery pipe control on the feed water pump system unit 3 and the boiler water supply system unit 4, so that boiler water supply implements heat recovery processing, the boiler water supply system unit 4 is in electrical signal connection with the heat recovery system unit 5, the heat recovery system unit 5 is in electrical signal connection with the air cooling system unit 6, the effect of heat recovery temperature control on the heat recovery system unit 5 can be effectively implemented through the air cooling system unit 6, and the control system unit 1 is used as the small steam turbine system unit 2, the feed water pump system unit 3, the boiler water supply system unit 4, the heat recovery system unit 5 and the air cooling system unit 6.
Example two:
referring to fig. 1-5, the present invention provides a technical solution: a regenerative drive small steam turbine system comprises a control system unit 1, a small steam turbine system unit 2 and a boiler water supply system unit 4, wherein the control system unit 1 is in electric signal connection with the small steam turbine system unit 2, a water supply pump system unit 3, the boiler water supply system unit 4, a regenerative system unit 5 and an air cooling system unit 6, the small steam turbine system unit 2 can effectively realize start and stop control during the operation of a small steam turbine, the small steam turbine system unit 2 is in electric signal connection with the water supply pump system unit 3, the water supply pump system unit 3 can effectively implement water supply control on the water supply demand of the boiler, so that the boiler water supply system unit 4 can effectively pair the water supply pump system unit 3 to implement water supply control of the small steam turbine system unit 2, the water supply pump system unit 3 is in electric signal connection with the boiler water supply system unit 4, the feed water pump system unit 3 is electrically connected with the heat recovery system unit 5, the heat recovery system unit 5 can perform water supply heat recovery pipe control on the feed water pump system unit 3 and the boiler water supply system unit 4, so that the boiler water supply performs heat recovery processing, the boiler water supply system unit 4 is electrically connected with the heat recovery system unit 5, the heat recovery system unit 5 is electrically connected with the air cooling system unit 6, the heat recovery system unit 5 can effectively perform heat recovery temperature control effect on the heat recovery system unit 5 through the air cooling system unit 6, the control system unit 1 is used as a control system of the small steam turbine system unit 2, the feed water pump system unit 3, the boiler water supply system unit 4, the heat recovery system unit 5 and the air cooling system unit 6, and the data transceiver module 11 and the data processing module 12 are fixedly connected in the control system unit 1 through screws, data can be effectively transmitted through the data transceiver module 11, digital-to-analog conversion can be carried out on the received and transmitted data by means of the data processing module 12, the data transceiver module 11 is in electric signal connection with the data processing module 12, the control system unit 1 is internally and fixedly connected with the data storage module 13 and the data conversion module 14 through screws, data storage can be effectively carried out through the data storage module 13, conversion between electric signals and digital signals can be carried out by means of the data conversion module 14, and the data conversion module 14 is in electric signal connection with the data storage module 13.
Example three:
referring to fig. 1-5, the present invention provides a technical solution: a regenerative drive small steam turbine system comprises a control system unit 1, a small steam turbine system unit 2 and a boiler water supply system unit 4, wherein the control system unit 1 is in electric signal connection with the small steam turbine system unit 2, a water supply pump system unit 3, the boiler water supply system unit 4, a regenerative system unit 5 and an air cooling system unit 6, the small steam turbine system unit 2 can effectively realize start and stop control during the operation of a small steam turbine, the small steam turbine system unit 2 is in electric signal connection with the water supply pump system unit 3, the water supply pump system unit 3 can effectively implement water supply control on the water supply demand of the boiler, so that the boiler water supply system unit 4 can effectively pair the water supply pump system unit 3 to implement water supply control of the small steam turbine system unit 2, the water supply pump system unit 3 is in electric signal connection with the boiler water supply system unit 4, the feed water pump system unit 3 is electrically connected with the heat recovery system unit 5, the heat recovery system unit 5 can perform water supply heat recovery pipe control on the feed water pump system unit 3 and the boiler water supply system unit 4, so that heat recovery processing is performed on boiler water supply, the boiler water supply system unit 4 is electrically connected with the heat recovery system unit 5, the heat recovery system unit 5 is electrically connected with the air cooling system unit 6, the heat recovery system unit 5 can effectively perform heat recovery temperature control on the heat recovery system unit 5 through the air cooling system unit 6, the control system unit 1 is used as a control system of the small steam turbine system unit 2, the feed water pump system unit 3, the boiler water supply system unit 4, the heat recovery system unit 5, the air cooling system unit 6 and the small steam turbine switching system 7, and the data transceiver module 11 and the data processing module 12 are fixedly connected inside the control system unit 1 through screws, the data transmission and receiving module 11 can effectively achieve the data transmission effect, the data processing module 12 can be used for implementing digital-to-analog conversion on the transmitted and received data, the data transmission and receiving module 11 is in electric signal connection with the data processing module 12, the control system unit 1 is internally and fixedly connected with the data storage module 13 and the data conversion module 14 through screws, the data storage module 13 can effectively implement data storage, the data conversion module 14 can implement conversion between electric signals and digital signals through the data conversion module 14, the data conversion module 14 is in electric signal connection with the data storage module 13, the small steam turbine system unit 2 is in electric signal connection with the pure condensing small steam turbine 21 and the pure back pressure small steam turbine 22, the pure condensing small steam turbine 21 and the pure back pressure small steam turbine 22 are independent small steam turbines, and the two independent small steam turbines can effectively implement alternate work, the control system unit 1 is electrically connected with a small steam turbine switching system 7, the small steam turbine switching system 7 is electrically connected with a small steam turbine system unit 2, and the small steam turbine switching system 7 is respectively connected with a switching control system of the straight condensing type small steam turbine 21 and the pure back pressure type small steam turbine 22 so as to control conversion control between the straight condensing type small steam turbine 21 and the pure back pressure type small steam turbine 22.
Example four:
referring to fig. 1-5, the present invention provides a technical solution: a regenerative drive small steam turbine system comprises a control system unit 1, a small steam turbine system unit 2 and a boiler water supply system unit 4, wherein the control system unit 1 is in electric signal connection with the small steam turbine system unit 2, a water supply pump system unit 3, the boiler water supply system unit 4, a regenerative system unit 5 and an air cooling system unit 6, the small steam turbine system unit 2 can effectively realize start and stop control during the operation of a small steam turbine, the small steam turbine system unit 2 is in electric signal connection with the water supply pump system unit 3, the water supply pump system unit 3 can effectively implement water supply control on the water supply demand of the boiler, so that the boiler water supply system unit 4 can effectively pair the water supply pump system unit 3 to implement water supply control of the small steam turbine system unit 2, the water supply pump system unit 3 is in electric signal connection with the boiler water supply system unit 4, the feed water pump system unit 3 is electrically connected with the heat recovery system unit 5, the heat recovery system unit 5 can perform water supply heat recovery pipe control on the feed water pump system unit 3 and the boiler water supply system unit 4, so that the boiler water supply performs heat recovery processing, the boiler water supply system unit 4 is electrically connected with the heat recovery system unit 5, the heat recovery system unit 5 is electrically connected with the air cooling system unit 6, the heat recovery system unit 5 can effectively perform heat recovery temperature control effect on the heat recovery system unit 5 through the air cooling system unit 6, the control system unit 1 is used as a control system of the small steam turbine system unit 2, the feed water pump system unit 3, the boiler water supply system unit 4, the heat recovery system unit 5 and the air cooling system unit 6, and the data transceiver module 11 and the data processing module 12 are fixedly connected in the control system unit 1 through screws, the data transmission and receiving effect can be effectively realized through the data receiving and sending module 11, the data receiving and sending module 12 can be used for carrying out digital-to-analog conversion on the received and sent data, the data receiving and sending module 11 is in electric signal connection with the data processing module 12, the data storage module 13 and the data conversion module 14 are fixedly connected in the control system unit 1 through screws, the data storage module 13 can be used for effectively storing data, the data conversion module 14 can be used for carrying out conversion between electric signals and digital signals, the data conversion module 14 is in electric signal connection with the data storage module 13, the water supply pump system unit 3 is in electric signal connection with the water supply pump body 31, the water supply pump body 31 can be used for effectively conveying water body supply, the boiler water supply system unit 4 is in electric signal connection with the boiler water supply detection system 41, and the boiler water supply detection system, the electric signal connection of the heat recovery system unit 5 is provided with a reheating supply system 51 and a heat recovery monitoring system 52, the heat recovery monitoring system 52 is connected with the reheating supply system 51, the electric signal connection of the air cooling system unit 6 is provided with an air cooling system 61, and the air cooling system 61 is used as a cooling control system of the heat recovery system unit 5.
The working principle is as follows: when the water supply control system is used, water supply demand detection management and control can be effectively implemented on a boiler water supply system unit 4 through a control system unit 1, direct management and control water supply conveying can be implemented on the boiler water supply system unit 4 through a water supply pump system unit 3 and a small steam turbine system unit 2, meanwhile, a heat recovery system unit 5 and an air cooling system unit 6 which are arranged between the water supply pump system unit 3 and the boiler water supply system unit 4 can implement heat recovery processing on water supply in the boiler water supply system unit 4 and implement real-time management and control through the control system unit 1, and a small steam turbine switching system 7 which is arranged can implement rotation of a pure condensing small steam turbine 21 and a pure back pressure small steam turbine 22 so as to effectively improve the operation time sequence of the small steam turbine system unit 2.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A regenerative drive small steam turbine system, comprising:
a control system unit (1);
a small steam turbine system unit (2); and
a boiler water supply system unit (4);
the control system unit (1) is electrically connected with a small steam turbine system unit (2), a water feeding pump system unit (3), a boiler water supply system unit (4), a heat recovery system unit (5) and an air cooling system unit (6);
the small steam turbine system unit (2) is in electrical signal connection with the water feeding pump system unit (3), the water feeding pump system unit (3) is in electrical signal connection with the boiler water supply system unit (4), the water feeding pump system unit (3) is in electrical signal connection with the heat regeneration system unit (5), the boiler water supply system unit (4) is in electrical signal connection with the heat regeneration system unit (5), and the heat regeneration system unit (5) is in electrical signal connection with the air cooling system unit (6).
2. The regenerative drive small steam turbine system according to claim 1, wherein: the small steam turbine system unit (2) further comprises:
a small turbine switching system (7);
the control system unit (1) is electrically connected with a small turbine switching system (7), and the small turbine switching system (7) is electrically connected with the small turbine system unit (2).
3. The regenerative drive small steam turbine system according to claim 1, wherein: the control system unit (1) further comprises:
a data transceiver module (11);
a data processing module (12);
the control system unit (1) is internally and fixedly connected with a data transceiver module (11) and a data processing module (12) through screws, and the data transceiver module (11) is in electric signal connection with the data processing module (12).
4. The regenerative drive small steam turbine system according to claim 1, wherein: the control system unit (1) further comprises:
a data storage module (13);
a data conversion module (14);
the control system unit (1) is internally and fixedly connected with a data storage module (13) and a data conversion module (14) through screws, and the data conversion module (14) is in electric signal connection with the data storage module (13).
5. The regenerative drive small steam turbine system according to claim 1, wherein: the small steam turbine system unit (2) further comprises:
a small condensing steam turbine (21);
a pure back pressure small turbine (22);
the small steam turbine system unit (2) is electrically connected with a pure condensing small steam turbine (21) and a pure back pressure small steam turbine (22), and the pure condensing small steam turbine (21) and the pure back pressure small steam turbine (22) are independent small steam turbines.
6. The regenerative drive small steam turbine system according to claim 1, wherein: the water supply pump system unit (3) is electrically connected with the water supply pump body (31), and the boiler water supply system unit (4) is electrically connected with the boiler water supply detection system (41).
7. The regenerative drive small steam turbine system according to claim 1, wherein: the regenerative system unit (5) further comprises:
a reheat supply system (51);
a regenerative monitoring system (52);
the electric signal of the heat recovery system unit (5) is connected with a reheating supply system (51) and a heat recovery monitoring system (52), and the heat recovery monitoring system (52) is connected with the reheating supply system (51) through an electric signal.
8. The regenerative drive small steam turbine system according to claim 1, wherein: the air cooling system unit (6) is electrically connected with an air cooling system (61), and the air cooling system (61) is used as a cooling control system of the regenerative system unit (5).
9. The regenerative drive small steam turbine system according to claim 2, wherein: the control system unit (1) is used as a management and control system of the small steam turbine system unit (2), the water feeding pump system unit (3), the boiler water supply system unit (4), the heat recovery system unit (5), the air cooling system unit (6) and the small steam turbine switching system (7).
10. The regenerative drive small steam turbine system according to claim 5, wherein: and the small steam turbine switching system (7) is respectively connected with a pure condensing small steam turbine (21) and a pure back pressure small steam turbine (22) switching management and control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011640337.0A CN112855295A (en) | 2020-12-31 | 2020-12-31 | Backheating type driving small steam turbine system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011640337.0A CN112855295A (en) | 2020-12-31 | 2020-12-31 | Backheating type driving small steam turbine system |
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| CN110656990A (en) * | 2019-09-29 | 2020-01-07 | 大唐郓城发电有限公司 | Double-machine regenerative system and power adjusting method thereof |
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| JPS5818507A (en) * | 1981-07-24 | 1983-02-03 | Mitsubishi Heavy Ind Ltd | Controller for rotational frequency of boiler feed water pump turbine in variable pressure operation of boiler |
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Application publication date: 20210528 |