CN216767500U - Steam turbine waste heat utilization system - Google Patents
Steam turbine waste heat utilization system Download PDFInfo
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- CN216767500U CN216767500U CN202220348138.0U CN202220348138U CN216767500U CN 216767500 U CN216767500 U CN 216767500U CN 202220348138 U CN202220348138 U CN 202220348138U CN 216767500 U CN216767500 U CN 216767500U
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- waste heat
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Abstract
The utility model discloses a steam turbine waste heat utilization system, which relates to the technical field of steam turbine condensation and comprises a waste heat kinetic energy machine and a steam turbine, wherein the air inlet end of the waste heat kinetic energy machine is communicated with the exhaust end of a final-stage cylinder of the steam turbine, the exhaust end of the final-stage cylinder of the waste heat kinetic energy machine is provided with a heat recovery module, the heat recovery module consists of refrigeration equipment, an ejector and a circulating liquid pump, the liquid outlet end of the ejector is communicated with the liquid inlet end of the refrigeration equipment, one liquid outlet end of the refrigeration equipment is communicated with the working fluid liquid inlet end of the ejector through a circulating pipeline, the circulating liquid pump is arranged at the working fluid liquid inlet end of the ejector and is connected with the circulating pipeline in series, the other liquid outlet end of the refrigeration equipment is communicated with the liquid outlet end of the steam boiler, and the exhaust end of the final-stage cylinder of the waste heat kinetic energy machine is communicated with the air inlet end of the ejector through the circulating fluid of the steam boiler. This steam turbine waste heat utilization system has solved the extravagant waste heat of current steam turbine condensing system and the great problem of cooling water consumption.
Description
Technical Field
The utility model relates to the technical field of steam turbine condensation, in particular to a waste heat utilization system of a steam turbine.
Background
The condenser of the condensing steam turbine system is an important accessory device of a steam turbine unit, and has the function of cooling the steam turbine exhaust into condensed water. Whether the operation condition is normal or not directly influences the safe and economic operation of the whole unit.
At present, a condensing steam turbine adopts a heat exchange tube surface type condenser. Because the dividing wall type heat transfer form has thermal resistance, the thermal resistance can be further increased after the circulating water heat exchange pipe generates water scale, the heat economy is poor, and a large amount of circulating water is wasted. Therefore, this form of condensation wastes a large amount of waste heat, cooling water, and electrical energy resources.
Therefore, it is necessary to provide a turbine waste heat utilization system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims to provide a turbine waste heat utilization system to solve the problems of waste heat waste and high cooling water consumption of the existing turbine condensing system in the background technology.
(II) technical scheme
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a steam turbine waste heat utilization system, includes waste heat kinetic energy machine and steam turbine, the inlet end of waste heat kinetic energy machine communicates with the last stage jar exhaust end of steam turbine, the last stage jar exhaust end of waste heat kinetic energy machine is equipped with the heat recovery module, the heat recovery module comprises refrigeration plant, ejector and circulating liquid pump, the play liquid end of ejector communicates with refrigeration plant's inlet end, one of them play liquid end of refrigeration plant communicates with the working fluid inlet end of ejector through the circulation pipeline, the working fluid inlet end of ejector is established at the circulating liquid pump and is established ties with the circulation pipeline, another play liquid end and steam boiler intercommunication of refrigeration plant, the last stage jar exhaust end of waste heat kinetic energy machine communicates with the injection fluid inlet end of ejector.
Preferably, the liquid inlet and the liquid outlet of the refrigeration equipment are both provided with liquid valves.
Preferably, the heat recovery module further comprises a liquid storage tank, and the liquid storage tank is connected with the circulating pipeline in series.
Preferably, the waste heat kinetic energy machine and the steam turbine are in transmission connection with a compressor or a generator.
Preferably, the middle part of the circulating pipeline is connected in series with a heat exchange device.
Preferably, the middle part of the circulating pipeline is connected in series with a heat exchange pipeline.
(III) advantageous effects
Compared with the prior art, the utility model provides a waste heat utilization system of a steam turbine, which has the following beneficial effects:
this steam turbine condensing waste heat utilization system through setting up refrigeration plant, ejector and circulating liquid pump, adopts the ejector to attract the steam of waste heat kinetic energy machine final stage jar exhaust end with soft water as power and condenses and produce the vacuum, has reduced the exhaust pressure of waste heat kinetic energy machine and steam turbine, makes the ideal enthalpy drop increase of steam to improve the thermal efficiency of device, improved the temperature of boiler that returns simultaneously, reduce the boiler energy consumption, avoid the waste heat, reduce the cooling water consumption.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of a heat recovery module of the present invention.
In the figure: 1. a waste heat kinetic energy machine; 3. a refrigeration device; 4. an ejector; 5. heat exchange equipment; 6. a steam turbine; 7. and (4) a circulating liquid pump.
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.
Referring to fig. 1 and 2, a steam turbine waste heat utilization system includes a waste heat kinetic energy machine 1 and a steam turbine 6, the waste heat kinetic energy machine 1 and the steam turbine 6 are both in transmission connection with a compressor or a generator, an air inlet end of the waste heat kinetic energy machine 1 is communicated with an exhaust end of a final stage cylinder of the steam turbine 6, an exhaust end of the final stage cylinder of the waste heat kinetic energy machine 1 is provided with a heat recovery module, the heat recovery module is composed of a refrigeration device 3, an ejector 4 and a circulating liquid pump 7, a liquid outlet end of the ejector 4 is communicated with a liquid inlet end of the refrigeration device 3, one liquid outlet end of the refrigeration device 3 is communicated with a working fluid inlet end of the ejector 4 through a circulating pipeline, the circulating liquid pump 7 is arranged at the working fluid inlet end of the ejector 4 and is connected with the circulating pipeline in series, the other liquid outlet end of the refrigeration device 3 is communicated with a steam boiler, liquid inlets and liquid outlets of the refrigeration device 3 are provided with liquid valves, the exhaust end of a final-stage cylinder of the waste heat kinetic energy machine 1 is communicated with the injection fluid inlet end of the injector 4, the heat recovery module further comprises a liquid storage tank, the liquid storage tank is connected with a circulating pipeline in series, the middle of the circulating pipeline is connected with a heat exchange device 5 in series, and the middle of the circulating pipeline is connected with a heat exchange pipeline in series.
The working principle is as follows: pumping soft water for steam cooling into a working fluid inlet end of an ejector 4 through a circulating liquid pump 7, spraying the soft water from a nozzle at a high speed, allowing the soft water to enter a receiving chamber, sucking steam at an exhaust end of a final-stage cylinder of a waste heat kinetic energy machine 1 under the turbulent diffusion action of jet flow, mixing the soft water and the steam in a mixing chamber, and performing heat exchange and condensation on the steam and the soft water quickly, so that the exhaust pressure of the waste heat kinetic energy machine 1 and a steam turbine 6 is reduced due to vacuum generated by steam condensation, the ideal enthalpy drop of the steam is increased, the heat efficiency of the device is improved, the circulating soft water can be buffered and stored under the action of a liquid storage tank, when the soft water is excessive due to the addition of steam condensate in a heat recovery module, the opening and closing of a liquid valve of a liquid outlet of a refrigeration device 3 can be controlled, the soft water is conveyed to a steam boiler, and when the environmental temperature is low through the arrangement of a heat exchange device 5 and a heat exchange pipeline, the power of the refrigeration equipment 3 is controlled to improve the temperature of the soft water in the circulating pipeline, so that the soft water can be used for heating, and similarly, the soft water can also be used for cooling equipment.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a steam turbine waste heat utilization system, includes waste heat kinetic energy machine (1) and steam turbine (6), its characterized in that: the exhaust system is characterized in that an air inlet end of the waste heat kinetic energy machine (1) is communicated with an exhaust end of a final-stage cylinder of a steam turbine (6), a heat recovery module is arranged at the exhaust end of the final-stage cylinder of the waste heat kinetic energy machine (1), the heat recovery module is composed of a refrigerating device (3), an ejector (4) and a circulating liquid pump (7), a liquid outlet end of the ejector (4) is communicated with a liquid inlet end of the refrigerating device (3), one liquid outlet end of the refrigerating device (3) is communicated with a working fluid liquid inlet end of the ejector (4) through a circulating pipeline, the circulating liquid pump (7) is arranged at the working fluid liquid inlet end of the ejector (4) and is connected with the circulating pipeline in series, the other liquid outlet end of the refrigerating device (3) is communicated with a steam boiler, and the exhaust end of the final-stage cylinder of the waste heat kinetic energy machine (1) is communicated with the air inlet end of the ejector (4).
2. The turbine waste heat utilization system of claim 1, wherein: and liquid valves are arranged at the liquid inlet and the liquid outlet of the refrigeration equipment (3).
3. The turbine waste heat utilization system of claim 1, wherein: the heat recovery module further comprises a liquid storage tank, and the liquid storage tank is connected with the circulating pipeline in series.
4. The turbine waste heat utilization system of claim 1, wherein: the waste heat kinetic energy machine (1) and the steam turbine (6) are both in transmission connection with a compressor or a generator.
5. The turbine waste heat utilization system of claim 1, wherein: and the middle part of the circulating pipeline is connected in series with a heat exchange device (5).
6. The turbine waste heat utilization system of claim 1, wherein: and the middle part of the circulating pipeline is connected in series with a heat exchange pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220348138.0U CN216767500U (en) | 2022-02-21 | 2022-02-21 | Steam turbine waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220348138.0U CN216767500U (en) | 2022-02-21 | 2022-02-21 | Steam turbine waste heat utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216767500U true CN216767500U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202220348138.0U Active CN216767500U (en) | 2022-02-21 | 2022-02-21 | Steam turbine waste heat utilization system |
Country Status (1)
| Country | Link |
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| CN (1) | CN216767500U (en) |
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2022
- 2022-02-21 CN CN202220348138.0U patent/CN216767500U/en active Active
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