CN218721816U - Back of body machine heating system congeals of energy cascade utilization - Google Patents
Back of body machine heating system congeals of energy cascade utilization Download PDFInfo
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- CN218721816U CN218721816U CN202222884272.5U CN202222884272U CN218721816U CN 218721816 U CN218721816 U CN 218721816U CN 202222884272 U CN202222884272 U CN 202222884272U CN 218721816 U CN218721816 U CN 218721816U
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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
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Abstract
The utility model discloses a back condensing machine heating system with energy gradient utilization, belonging to the technical field of heating, comprising a main turbine low-pressure cylinder, a main turbine middle-pressure cylinder, a back condensing machine high-pressure cylinder, a back condensing machine low-pressure cylinder and a heating condenser, wherein a steam outlet of the main turbine middle-pressure cylinder is communicated with steam inlets of the back condensing machine high-pressure cylinder and the main turbine low-pressure cylinder; the steam outlet of the high-pressure cylinder of the back condensing machine is communicated with the steam inlet of the low-pressure cylinder of the back condensing machine through a valve h, and the steam outlet of the high-pressure cylinder of the back condensing machine is communicated with the steam inlet of the heat supply condenser through a valve c; a steam outlet of a low-pressure cylinder of the back condensing machine is communicated with a steam inlet of the heat supply condenser, and an SSS clutch is arranged between the low-pressure cylinder of the back condensing machine and a high-pressure cylinder of the back condensing machine; the valve f and the valve g are installed at a circulating water inlet of the heat supply condenser, and the valve d and the valve e are installed at a circulating water outlet of the heat supply condenser, so that the problem of high heat supply energy consumption of a heat supply unit changed from a straight condenser is solved.
Description
Technical Field
The utility model belongs to the technical field of the heat supply technique and specifically relates to a back of body machine heating system congeals that energy step utilized.
Background
The medium-exhaust steam-extraction heat supply technology is a mode of externally supplying heat by opening holes on a communication pipe of a medium-low pressure cylinder. The three-way valve is additionally arranged on the middle and low pressure cylinder communicating pipe, is connected with the steam extraction pipeline and is provided with necessary valves such as the regulating valve, and the like, the technology is mature, is the most common traditional heating steam extraction and heat supply mode, and is suitable for new (improved and expanded) units with heating and heat supply requirements.
For the unit for changing pure condensation into heat supply, the pressure of the cylinder of the medium-low pressure cylinder is higher, the heat supply parameter of the medium-discharge cylinder is higher than the demand parameter of a heating user, the heat supply energy consumption is higher, and the waste of energy working capacity exists.
SUMMERY OF THE UTILITY MODEL
The not enough to prior art, the utility model provides a back of body machine heating system congeals of energy step utilization has solved the problem that pure machine of congealing changes heat supply unit heat supply energy consumption height.
The utility model adopts the technical proposal that:
a back-condensation machine heating system with energy cascade utilization, comprising:
a main turbine low pressure cylinder;
the steam outlet of the main steam turbine middle pressure cylinder is communicated with the steam inlets of the condensing back machine high pressure cylinder and the main steam turbine low pressure cylinder;
the steam outlet of the high-pressure cylinder of the back condensing machine is communicated with the steam inlet of the low-pressure cylinder of the back condensing machine through a valve h, and the steam outlet of the high-pressure cylinder of the back condensing machine is communicated with the steam inlet of the heat supply condenser through a valve c;
the steam outlet of the low-pressure cylinder of the back condensing machine is communicated with the steam inlet of the heat supply condenser, and an SSS clutch is arranged between the low-pressure cylinder of the back condensing machine and the high-pressure cylinder of the back condensing machine;
the heat supply condenser is characterized in that a circulating water inlet of the heat supply condenser is provided with a valve f for communicating heat supply backwater and a valve g for communicating circulating cooling inlet water, and a circulating water outlet of the heat supply condenser is provided with a valve d for communicating heat supply water and a valve e for communicating circulating cooling outlet water.
The utility model discloses technical scheme's further improvement lies in: and a valve a is arranged between the steam outlet of the middle pressure cylinder of the main steam turbine and the steam inlet of the low pressure cylinder of the main steam turbine.
The utility model discloses technical scheme's further improvement lies in: and a valve b is arranged between the steam outlet of the main steam turbine intermediate pressure cylinder and the steam inlet of the back condensation machine high pressure cylinder.
The utility model discloses technical scheme's further improvement lies in: the main steam turbine low-pressure cylinder is characterized by further comprising an air cooling island, and a steam outlet of the main steam turbine low-pressure cylinder is communicated with the air cooling island.
Since the technical scheme is used, the utility model discloses the technological progress who gains is:
the application provides a congeal back of body machine heating system that energy cascade utilized can realize two kinds of modes of pure congealing operation in summer and operation of winter backpressure. Under the pure mode of operation that congeals in summer, because summer ambient temperature is high, the main steam turbine backpressure is high, and unit efficiency reduces relatively, through establishing congealing back of the body machine and condenser, reduces unit backpressure, improves the generating efficiency. Under the backpressure operation mode in winter, the back condensing machine is arranged, and heat supply is performed after power generation is performed by utilizing the exhaust steam in the main turbine, so that the cascade utilization of energy is realized, the generated energy is increased on the basis of meeting the heat supply requirement, and the economic benefit is improved. The system realizes the cascade utilization of energy, has high comprehensive utilization efficiency and is particularly suitable for the heat supply reconstruction project of a 600MW air cooling unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a schematic diagram of the structure of the present invention;
the system comprises a main steam turbine intermediate pressure cylinder 1, a main steam turbine low pressure cylinder 2, a main steam turbine high pressure cylinder 3, a back condensation machine high pressure cylinder 4, an SSS clutch 5, a back condensation machine low pressure cylinder 6, a heat supply condenser 7, a main steam turbine generator 8, a back condensation machine generator 9, valves a and 10, valves b and 11, valves c and 12, valves d and 13, valves e and 14, valves f and 15, valves g and 16 and a valve h.
Detailed Description
To further illustrate the embodiments, the present invention provides drawings, which are part of the disclosure of the present invention and mainly serve to illustrate the embodiments.
As shown in fig. 1, the present application provides a back condensation machine heating system with energy cascade utilization, which is applied to the mutual switching between heating in winter and non-heating in summer, and comprises: the system comprises a main steam turbine low-pressure cylinder 1, a main steam turbine intermediate-pressure cylinder 1, a back condensing machine high-pressure cylinder 3, a back condensing machine low-pressure cylinder 5, a heat supply condenser 6 and an SSS clutch 4.
Wherein, the steam outlet of the main steam turbine middle pressure cylinder 1 is communicated with the steam inlet of the back condensation machine high pressure cylinder 3 and the main steam turbine low pressure cylinder 1; a steam outlet of the high-pressure cylinder 3 of the back condensation machine is communicated with a steam inlet of the low-pressure cylinder 5 of the back condensation machine through a valve h16, and a steam outlet of the high-pressure cylinder 3 of the back condensation machine is communicated with a steam inlet of the heat supply condenser 6 through a valve c 11; the steam outlet of the low-pressure cylinder 5 of the back condensing machine is communicated with the steam inlet of the heat supply condenser 6, the rotors of the low-pressure cylinder 5 of the back condensing machine and the high-pressure cylinder 3 of the back condensing machine are connected through an SSS clutch 4, and the SSS clutch 4 adopts a back condensing machine 3S clutch special for a steam turbine; and a circulating water inlet of the heat supply condenser 6 is respectively provided with a valve f14 for communicating heat supply backwater and a valve g15 for communicating circulating cooling inlet water, and a circulating water outlet of the heat supply condenser 6 is respectively provided with a valve d12 for communicating heat supply and water supply and a valve e13 for communicating circulating cooling outlet water.
It should be noted that the main turbine drives the main turbine generator 7, the condensing back machine turbine drives the condensing back machine generator 8, fig. 1 only discloses the improved parts, and the inlet and outlet of the existing equipment are simplified, for example, the steam inlet of the pressure cylinder 1 in the main turbine and the connection with the high pressure cylinder of the turbine, and the condensed water outlet and the air extraction outlet of the heat supply condenser 6 are also provided.
Alternatively, the steam outlet of the main steam turbine intermediate pressure cylinder 1 is communicated with the steam inlet of the main steam turbine low pressure cylinder 1 through a valve a9, the main steam turbine intermediate pressure cylinder 1 is communicated with the steam inlet of the back condensation machine high pressure cylinder 3 through a valve b10, and the above-mentioned valve a9, valve b10, valve c11, valve d12, valve e13, valve f14, valve g15 and valve h16 may be a stop valve or a gate valve, respectively, and obviously, are not limited to the stop valve or the gate valve.
Alternatively, the outlet of the main turbine lower pressure cylinder 1 is in communication with a cooling device, obviously, it may be an air cooling island or a cooling tower.
The scheme is particularly applied to the 600MW heat supply unit reconstruction project and has wide application prospect.
The working principle is as follows:
1. pure condensation operation in summer:
one part of steam discharged by a main steam turbine intermediate pressure cylinder 1 enters a main steam turbine low pressure cylinder 2, the other part of the steam enters a back condensation machine high pressure cylinder 3 through a valve b, an SSS clutch 4 is connected with the back condensation machine high pressure cylinder 3 and a back condensation machine low pressure cylinder 5, a valve c is closed, the steam enters the back condensation machine low pressure cylinder 5 through a communicating pipe, the back condensation machine is in pure condensation operation, the steam discharged by the back condensation machine low pressure cylinder 5 enters a condenser 6, and circulating cooling water is adjusted through a valve e and the valve g to take away heat of the heat supply condenser 6.
2. Heating operation in winter:
one part of the steam discharged by the main steam turbine middle pressure cylinder 1 enters a main steam turbine low pressure cylinder 2, the other part of the steam discharged by the main steam turbine middle pressure cylinder enters a back condensing machine high pressure cylinder 3 through a valve b, an SSS clutch 4 is disconnected with the back condensing machine high pressure cylinder 3 and the back condensing machine low pressure cylinder 5, a communicating pipe valve h is closed at the moment, the back condensing machine low pressure cylinder 5 does not enter the steam, a steam discharging pipe part of the back condensing machine high pressure cylinder 3 enters a heat supply condenser 6, the back condensing machine operates in a backpressure mode, and heat of the heat supply condenser 6 is taken away by adjusting the heat supply network water through a valve f and a valve d to supply heat to the outside.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A back of body machine heating system that congeals that energy cascade was utilized, its characterized in that includes:
a main turbine low pressure cylinder;
the steam outlet of the main steam turbine middle pressure cylinder is communicated with the steam inlets of the condensing back machine high pressure cylinder and the main steam turbine low pressure cylinder;
the steam outlet of the high-pressure cylinder of the back condensing machine is communicated with the steam inlet of the low-pressure cylinder of the back condensing machine through a valve h, and the steam outlet of the high-pressure cylinder of the back condensing machine is communicated with the steam inlet of the heat supply condenser through a valve c;
the steam outlet of the low-pressure cylinder of the back condensing machine is communicated with the steam inlet of the heat supply condenser, and an SSS clutch is arranged between the low-pressure cylinder of the back condensing machine and the high-pressure cylinder of the back condensing machine;
the heat supply condenser is characterized in that a circulating water inlet of the heat supply condenser is provided with a valve f for communicating heat supply backwater and a valve g for communicating circulating cooling inlet water, and a circulating water outlet of the heat supply condenser is provided with a valve d for communicating heat supply water and a valve e for communicating circulating cooling outlet water.
2. The system of claim 1, wherein a valve a is installed between the steam outlet of the intermediate pressure cylinder of the main turbine and the steam inlet of the low pressure cylinder of the main turbine.
3. The system of claim 1, wherein a valve b is installed between the steam outlet of the intermediate pressure cylinder of the main turbine and the steam inlet of the high pressure cylinder of the back condensation machine.
4. The system of claim 1, further comprising an air cooling island, wherein the steam outlet of the low-pressure cylinder of the main turbine is communicated with the air cooling island.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222884272.5U CN218721816U (en) | 2022-10-31 | 2022-10-31 | Back of body machine heating system congeals of energy cascade utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222884272.5U CN218721816U (en) | 2022-10-31 | 2022-10-31 | Back of body machine heating system congeals of energy cascade utilization |
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| CN218721816U true CN218721816U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222884272.5U Active CN218721816U (en) | 2022-10-31 | 2022-10-31 | Back of body machine heating system congeals of energy cascade utilization |
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| CN (1) | CN218721816U (en) |
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- 2022-10-31 CN CN202222884272.5U patent/CN218721816U/en active Active
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