CN220621980U - Heat supply network condensing waste heat recovery system and steam turbine system - Google Patents
Heat supply network condensing waste heat recovery system and steam turbine system Download PDFInfo
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- CN220621980U CN220621980U CN202322410586.6U CN202322410586U CN220621980U CN 220621980 U CN220621980 U CN 220621980U CN 202322410586 U CN202322410586 U CN 202322410586U CN 220621980 U CN220621980 U CN 220621980U
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- 238000011084 recovery Methods 0.000 title claims abstract description 29
- 239000002918 waste heat Substances 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 5
- 238000000605 extraction Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 2
- 238000009833 condensation Methods 0.000 abstract description 9
- 230000005494 condensation Effects 0.000 abstract description 9
- 230000008676 import Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000008236 heating water Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Abstract
The utility model relates to a heat supply network condensation waste heat recovery system and steam turbine system, heat supply network condensation waste heat recovery system includes the condenser, first heat transfer device, drainage pipe and second heat transfer device, first heat transfer device sets up in the condenser and is used for carrying out the heat transfer with the steam in the condenser, first heat transfer device has first heat transfer import and first heat transfer export, first heat transfer import and heat supply network return water end of first heat transfer device are connected, first heat transfer export of first heat transfer device is connected in drainage pipe, drainage pipe keeps away from first heat transfer device's one end and connects in user's end; the second heat exchange device is provided with a first drainage inlet, a first drainage outlet, a first heat exchange inlet and a first heat exchange outlet, wherein the first drainage inlet is communicated with the drainage outlet of the condenser, the first heat exchange inlet is communicated with the return water end of the heat supply network, and the first heat exchange outlet is communicated with the drainage pipeline. The scheme can recover steam and hydrophobic heat, thereby achieving the purpose of improving the temperature of the heat supply network backwater.
Description
Technical Field
The disclosure relates to the technical field of turbines, in particular to a heat supply network condensing waste heat recovery system and a turbine system.
Background
After the exhaust steam of the steam turbine enters the condenser, the steam is condensed into condensed water on the condenser tube bundle and is collected in the hot well, and the condensed water is pumped out by the condensed water pump and is generally recycled as boiler feed water. On the one hand, a large amount of heat is dissipated in the process of condensing and releasing heat in the condenser, on the other hand, the drain water condensed by the condenser still has a certain temperature, and in the prior art, the heat of the part is not utilized, so that the heat is wasted.
Disclosure of Invention
The disclosure aims to provide a heat supply network condensing waste heat recovery system and a steam turbine system, so as to solve the technical problems in the related art.
In order to achieve the above object, according to a first aspect of the present disclosure, there is provided a heat recovery system for condensing waste heat of a heat supply network, including a condenser, a first heat exchange device, a drain pipe, and a second heat exchange device, where the first heat exchange device is disposed in the condenser and is used for exchanging heat with steam in the condenser, the first heat exchange device has a first heat exchange inlet and a first heat exchange outlet, the first heat exchange inlet of the first heat exchange device is connected to a return water end of the heat supply network, the first heat exchange outlet of the first heat exchange device is connected to the drain pipe, and an end of the drain pipe away from the first heat exchange device is connected to a user end;
the second heat exchange device is provided with a first drainage inlet, a first drainage outlet, a first heat exchange inlet and a first heat exchange outlet, the first drainage inlet is communicated with the drainage outlet of the condenser, the first heat exchange inlet is communicated with the return water end of the heat supply network, and the first heat exchange outlet is communicated with the drainage pipeline.
Optionally, the drainage pipeline is arranged opposite to the fifth extraction section steam extraction port of the turbine intermediate pressure cylinder, so that heat exchange is performed between the heat supply network backwater flowing through the drainage pipeline and steam discharged from the fifth extraction section steam extraction port of the turbine intermediate pressure cylinder.
Optionally, the heat supply network condensing waste heat recovery system further comprises a connecting pipe, the connecting pipe comprises a main pipe, a first connecting pipe and a second connecting pipe, the first end of the first connecting pipe and the first end of the second connecting pipe are connected with the first end of the main pipe, the second end of the first connecting pipe is connected with the first heat exchange inlet of the first heat exchange device, the second end of the second connecting pipe is connected with the first heat exchange inlet of the second heat exchange device, and the second end of the main pipe is connected with the return water end of the heat supply network.
Optionally, the heat supply network condensing waste heat recovery system further comprises an exhaust device, an air inlet of the exhaust device is communicated with an air outlet of the steam turbine, and an air outlet of the exhaust device is communicated with an air inlet of the condenser.
Optionally, the first hydrophobic outlet of the second heat exchange device is in communication with the exhaust device.
Optionally, the heat supply network condensing waste heat recovery system further comprises a heat supply network circulating pump, and the heat supply network circulating pump is arranged on the drainage pipeline.
Optionally, a first flow control valve is arranged at the first heat exchange outlet of the first heat exchange device, and a second flow control valve is arranged at the first heat exchange outlet of the second heat exchange device.
Optionally, the second heat exchange device is a plate heat exchanger.
Optionally, the condenser comprises a first condenser and a second condenser, and the first condenser and the second condenser are connected in parallel.
According to a second aspect of the present disclosure, there is provided a steam turbine system comprising a heat supply network condensing waste heat recovery system as described above.
Through the above technical scheme, on the one hand, through setting up a heat transfer device in the condenser, like this, when steam carries out condensation exothermic in the condenser, the heat supply network return water that flows from the heat supply network return water end can absorb the heat that steam in the condenser released in the condensation process when entering into the condenser inside through a heat transfer device's a heat transfer import to promote the temperature of this part heat supply network return water.
Meanwhile, the heat supply network backwater flowing into the second heat exchange device can exchange heat with the drain water flowing into the second heat exchange device from the drain outlet of the condenser, so that heat in the drain water in the condenser is recovered, and the temperature of the part of heat supply network backwater is heated, so that the heat supply network backwater discharged from the drainage pipeline can reach a certain temperature when being output from the drainage pipeline, and the heat supply network backwater can be used by a user (such as heating water in winter).
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
fig. 1 is a schematic structural connection diagram of a heat supply network condensation waste heat recovery system according to an exemplary embodiment of the present disclosure.
Description of the reference numerals
11-a first condenser; 12-a second condenser; 20-a first heat exchange device; 21-a first flow control valve; 30-drainage pipelines; 40-a second heat exchange device; 41-a second flow control valve; 60-an exhaust device; 70-a heat supply network circulating pump; 80-a hot water return end; 90-user side.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In the present disclosure, unless otherwise indicated, it is generally defined based on the normal use condition of the steam turbine, that is, "inside and outside" refer to the inside and outside of the corresponding structure profile, and that "far and near" refer to the far and near distance from the corresponding structure. The above directional terms are merely used to facilitate the description of the present disclosure, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the present disclosure. In addition, it should be noted that terms such as "first", "second", etc. are used to distinguish one element from another element, and do not have order or importance.
Referring to fig. 1, in order to achieve the above object, according to a first aspect of the present disclosure, there is provided a heat recovery system for condensing waste heat of a heat supply network, including a condenser, a first heat exchange device 20, a drain pipe 30, and a second heat exchange device 40, wherein the first heat exchange device 20 is disposed in the condenser and is used for exchanging heat with steam in the condenser, the first heat exchange device 20 has a first heat exchange inlet and a first heat exchange outlet, the first heat exchange inlet of the first heat exchange device 20 is connected with a return water end of the heat supply network, the first heat exchange outlet of the first heat exchange device 20 is connected with the drain pipe 30, and an end of the drain pipe 30 far from the first heat exchange device 20 is connected with a user end 90; the second heat exchange device 40 has a first drainage inlet, a first drainage outlet, a first heat exchange inlet and a first heat exchange outlet, wherein the first drainage inlet is communicated with the drainage outlet of the condenser, the first heat exchange inlet is communicated with the return water end of the heat supply network, and the first heat exchange outlet is communicated with the drainage pipeline 30.
Through the above technical scheme, on the one hand, through setting up first heat transfer device 20 in the condenser, like this, when steam carries out condensation exothermic in the condenser, when entering into the condenser inside through first heat transfer device 20's first heat transfer import from the heat supply network return water that heat supply network return water end flows, can absorb the heat that steam in the condenser released in the condensation process to promote the temperature of this part heat supply network return water.
Meanwhile, the heat supply network backwater flowing into the second heat exchange device 40 can exchange heat with the drain water flowing into the second heat exchange device 40 from the drain outlet of the condenser, so that heat in the drain water in the condenser is recovered, and the temperature of the part of heat supply network backwater is heated, so that the heat supply network backwater discharged from the drainage pipeline 30 can reach a certain temperature when being output from the drainage pipeline 30, and the heat supply network backwater can be used by users (such as winter heating water).
Here, it should be noted that, the above-mentioned first heat exchange structure may be a heat exchange fin specifically disposed in the condenser, or, the first heat exchange structure may also be a condenser tube bundle originally disposed in the condenser (that is, the heat exchange medium from the heat supply network backwater may directly flow through the condenser tube bundle as the condenser at this time), so as to reduce the implementation cost of the scheme while not damaging the overall structure of the condenser.
When the steam turbine supplies heat in extremely cold, the back pressure of the steam turbine is 54KPa, the exhaust temperature of the steam turbine is 82 ℃, the condenser heats the backwater temperature of the heat supply network, the backwater temperature of the heat supply network can be increased from 54 ℃ to 80 ℃ (slightly lower than the exhaust temperature of the steam turbine), and the requirements of most of domestic hot water of users can be basically met.
In order to further raise the temperature of the heat supply network backwater flowing out of the drain pipe 30, in one exemplary embodiment provided by the present disclosure, the drain pipe 30 may optionally be disposed opposite to the fifth extraction section extraction port of the turbine intermediate pressure cylinder, so that the heat supply network backwater flowing through the drain pipe 30 exchanges heat with the steam discharged from the fifth extraction section extraction port of the turbine intermediate pressure cylinder. Therefore, after the heat exchange and temperature rise of the heat supply network backwater through the first heat exchange device 20 or the second heat exchange device 40, the heat exchange can be carried out with the steam discharged from the steam extraction port of the fifth extraction section of the middle pressure cylinder of the steam turbine, so that the second heating of the heat supply network backwater is realized, the temperature of the heat supply network backwater is increased, and the use scene of a user is increased.
Alternatively, in another exemplary embodiment provided in the present disclosure, a portion of the drain pipe 30 opposite to the fifth pumping port may be configured as a mesh or plate, so as to increase a contact area with the steam sprayed from the fifth pumping port and improve heat transfer efficiency. Alternatively, the heating device may be disposed or installed on the drainage pipe 30, so that the purpose of secondary heating of the heat supply network backwater flowing out of the drainage pipe 30 can be achieved, thereby meeting the use requirements of users.
Optionally, the heat supply network condensation waste heat recovery system may further include a connection pipe (not shown), where the connection pipe includes a main pipe, a first connection pipe and a second connection pipe, the first end of the first connection pipe and the first end of the second connection pipe are both connected with the first end of the main pipe, the second end of the first connection pipe is connected with the first heat exchange inlet of the first heat exchange device 20, the second end of the second connection pipe is connected with the first heat exchange inlet of the second heat exchange device 40, and the second end of the main pipe is connected with the return water end of the heat supply network. Like this, from the heat supply network return water that the heat supply network return water end flows out some heat supply network return water can flow into in the first heat transfer device 20 through first connecting pipe and carry out heat transfer with the steam in the condenser, another part heat supply network return water that flows out from the heat supply network return water end can flow into in the second heat transfer device 40 through the second connecting pipe and carry out heat transfer with the hydrophobic that flows out in the condenser to promote heat exchange efficiency and heat recovery rate.
Or, the connecting pipe can also be a three-way pipe, the first interface of the three-way pipe is communicated with the backwater end of the heating network, the second interface of the three-way pipe is communicated with the first end of the first connecting pipe, and the third interface of the three-way pipe is communicated with the second end of the second connecting pipe.
Optionally, as shown in fig. 1, the heat recovery system for condensing waste heat of the heat supply network may further include an exhaust device 60, an air inlet of the exhaust device 60 is communicated with an air outlet of the steam turbine, and an air outlet of the exhaust device 60 is communicated with an air inlet of the condenser. That is, the steam discharged from the exhaust port of the steam turbine may pass through the exhaust device 60 and then enter the condenser.
Alternatively, as shown in FIG. 1, the first hydrophobic outlet of the second heat exchange device 40 communicates with the exhaust device 60. In this way, the drain water after heat exchange with the heat supply network backwater can flow back to the exhaust device 60 through the first drain outlet, and the drain water newly generated in the condenser can enter the second heat exchange device 40 again through the first drain inlet of the second heat exchange device 40, so that the circulation heat exchange between the drain water and the heat supply network backwater is realized.
Optionally, as shown in fig. 1, the heat supply network condensation waste heat recovery system may further include a heat supply network circulation pump 70, where the heat supply network circulation pump 70 is disposed on the drain pipeline 30. The heat supply network circulating pump 70 can drive the outflow of heat supply network backwater and convey the heat supply network backwater to the user terminal 90.
Alternatively, as shown in fig. 1, a first flow control valve 21 is provided at the first heat exchange outlet of the first heat exchange device 20, and a second flow control valve 41 is provided at the first heat exchange outlet of the second heat exchange device 40. In this way, the opening degrees of the first flow control valve 21 and the second flow control valve 41 can be adjusted according to the amount of heat release of the steam and the amount of heat release of the water drain, so that the temperature of the heat supply network return water flowing out of the first heat exchange device 20 and the temperature of the heat supply network return water flowing out of the second heat exchange device 40 are made as close as possible.
The first flow control valve 21 and the second flow control valve 41 may be electric butterfly valves or solenoid valves, or may be manual valves, as long as the flow rate of the heat supply network backwater flowing through the first heat exchange outlet of the first heat exchange device 20 and the first heat exchange outlet of the second heat exchange device 40 can be adjusted, which is not limited in the present disclosure.
Alternatively, the second heat exchanging arrangement 40 may be a plate heat exchanger. The plate heat exchanger comprises two mutually attached plates, wherein one plate is internally provided with a runner for water drainage to flow through, the other plate is internally provided with a runner for heat supply network backwater to flow through, and the flowing directions of the two plates are opposite, so that heat exchange is performed through the plates.
Alternatively, in another exemplary embodiment provided by the present disclosure, the second heat exchanger may also be formed as a plate-fin heat exchanger, which is a more efficient, compact, and light heat exchanger, and has advantages of high heat transfer efficiency and good temperature control.
Likewise, the first heat exchanger may also be a plate heat exchanger or a plate fin heat exchanger as described above, which will not be described in detail in this disclosure.
Alternatively, in one exemplary embodiment provided by the present disclosure, as shown in fig. 1, the condenser may include a first condenser 11 and a second condenser 12, and the first condenser 11 and the second condenser 12 are connected in parallel. The first condenser 11 and the second condenser 12 are connected in parallel, so that heat supply network backwater flowing out of a heat supply network backwater end can be guaranteed to enter the first condenser 11 and the second condenser 12 respectively, heat exchange is conducted with steam in the first condenser 11 and steam in the second condenser 12 respectively, heat exchange area and heat exchange efficiency are increased, and better heat exchange effect is achieved.
In the embodiment in which the condenser includes the first condenser 11 and the second condenser 12, the first flow control valve 21 and the first heat exchange device 20 may be two, and the two first heat exchange devices 20 are respectively disposed in the first condenser 11 and the second condenser 12, and each first flow valve is disposed corresponding to each first heat exchange device 20.
According to a second aspect of the present disclosure, there is provided a steam turbine system comprising a heat supply network condensing waste heat recovery system as above. The steam turbine system has all the beneficial effects of the heat supply network steam waste heat recovery system, and the disclosure is not repeated here.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (10)
1. The heat supply network condensing waste heat recovery system is characterized by comprising a condenser, a first heat exchange device, a drainage pipeline and a second heat exchange device, wherein the first heat exchange device is arranged in the condenser and is used for exchanging heat with steam in the condenser, the first heat exchange device is provided with a first heat exchange inlet and a first heat exchange outlet, the first heat exchange inlet of the first heat exchange device is connected with a heat supply network backwater end, the first heat exchange outlet of the first heat exchange device is connected with the drainage pipeline, and one end of the drainage pipeline far away from the first heat exchange device is connected with a user end;
the second heat exchange device is provided with a first drainage inlet, a first drainage outlet, a first heat exchange inlet and a first heat exchange outlet, the first drainage inlet is communicated with the drainage outlet of the condenser, the first heat exchange inlet is communicated with the return water end of the heat supply network, and the first heat exchange outlet is communicated with the drainage pipeline.
2. The heat supply network condensing waste heat recovery system according to claim 1, wherein the drainage pipeline is arranged opposite to the fifth extraction section steam extraction port of the turbine intermediate pressure cylinder, so that heat exchange occurs between the heat supply network backwater flowing through the drainage pipeline and steam discharged from the fifth extraction section steam extraction port of the turbine intermediate pressure cylinder.
3. The heat supply network condensing waste heat recovery system according to claim 1, further comprising a connecting pipe, wherein the connecting pipe comprises a main pipe, a first connecting pipe and a second connecting pipe, the first end of the first connecting pipe and the first end of the second connecting pipe are both connected with the first end of the main pipe, the second end of the first connecting pipe is connected with the first heat exchange inlet of the first heat exchange device, the second end of the second connecting pipe is connected with the first heat exchange inlet of the second heat exchange device, and the second end of the main pipe is connected with the return water end of the heat supply network.
4. The heat supply network condensing waste heat recovery system according to claim 1, further comprising an exhaust device, wherein an air inlet of the exhaust device is communicated with an air outlet of the steam turbine, and an air outlet of the exhaust device is communicated with an air inlet of the condenser.
5. The heat grid condensing waste heat recovery system of claim 4, wherein the first hydrophobic outlet of the second heat exchange device is in communication with the exhaust device.
6. The heat supply network condensing waste heat recovery system according to any one of claims 1-5, further comprising a heat supply network circulation pump disposed in said drain pipe.
7. The heat recovery system of any one of claims 1-5, wherein a first flow control valve is disposed at a first heat exchange outlet of the first heat exchange device, and a second flow control valve is disposed at a first heat exchange outlet of the second heat exchange device.
8. The heat recovery system of any one of claims 1-5, wherein the second heat exchange device is a plate heat exchanger.
9. The heat grid condensing waste heat recovery system of any one of claims 1-5, wherein the condenser comprises a first condenser and a second condenser, the first condenser and the second condenser being connected in parallel.
10. A steam turbine system comprising a heat recovery system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322410586.6U CN220621980U (en) | 2023-09-05 | 2023-09-05 | Heat supply network condensing waste heat recovery system and steam turbine system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322410586.6U CN220621980U (en) | 2023-09-05 | 2023-09-05 | Heat supply network condensing waste heat recovery system and steam turbine system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220621980U true CN220621980U (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322410586.6U Active CN220621980U (en) | 2023-09-05 | 2023-09-05 | Heat supply network condensing waste heat recovery system and steam turbine system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220621980U (en) |
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2023
- 2023-09-05 CN CN202322410586.6U patent/CN220621980U/en active Active
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