CN220624014U - Starting system for ultra-supercritical boiler and ultra-supercritical boiler - Google Patents
Starting system for ultra-supercritical boiler and ultra-supercritical boiler Download PDFInfo
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- CN220624014U CN220624014U CN202322252197.5U CN202322252197U CN220624014U CN 220624014 U CN220624014 U CN 220624014U CN 202322252197 U CN202322252197 U CN 202322252197U CN 220624014 U CN220624014 U CN 220624014U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The present disclosure relates to a starting system for a ultra-supercritical boiler and a ultra-supercritical boiler, the starting system for a ultra-supercritical boiler comprising: a deaerator; one end of the water inlet pipeline is used for being connected with the downstream of the water storage tank of the ultra-supercritical boiler, and the other end of the water inlet pipeline is connected with the deaerator; one end of the water outlet pipeline is connected with the deaerator, and the other end of the water outlet pipeline is used for being connected to the upstream of the economizer of the ultra-supercritical boiler; the pressure adjusting element is arranged on the water inlet pipeline and used for reducing the pressure of liquid in the water inlet pipeline; and the temperature adjusting element is arranged on the water inlet pipeline and used for reducing the temperature of liquid in the water inlet pipeline. A water inlet pipeline is additionally arranged between the deaerator and the water storage tank of the ultra-supercritical boiler, and a component capable of reducing temperature and pressure of working medium flowing into the economizer from the water storage tank is arranged on the water inlet pipeline, so that the working medium flowing into the deaerator after being cooled and reduced in pressure on the water inlet pipeline flows into the economizer of the ultra-supercritical boiler through a water outlet pipeline, and the starting time of the boiler is shortened.
Description
Technical Field
The present disclosure relates to the technical field of boiler equipment, and in particular, to a starting system for an ultra-supercritical boiler and an ultra-supercritical boiler.
Background
With the development of the power industry, the investment of the ultra-supercritical boiler is increased, and as the steam pressure and the steam temperature of the ultra-supercritical boiler are obviously improved compared with those of the traditional subcritical boiler and the supercritical boiler, the corresponding power generation efficiency is also increased. The shorter the start-stop time of the boiler is, the more energy can be saved in the time saved by the boiler to generate power, and compared with a subcritical boiler and a supercritical boiler, the supercritical boiler can be converted into more electric energy under the condition of saving the same energy, so that the start-stop speed requirement is higher and higher, working medium and energy loss during the start of the boiler can be effectively reduced, and the economy of a thermal power unit is improved. At present, the ultra-supercritical boiler realizes quick start and stop of a unit through a recirculation pump system, and when the recirculation pump fails to stop working or a part of the unit is not provided with the recirculation pump, working medium can only be discharged through an atmospheric expansion tank, so that the start speed is very slow, and even heat is wasted.
Disclosure of Invention
An object of the present disclosure is to provide a starting system for a ultra-supercritical boiler and an ultra-supercritical boiler to solve the problem of slow start of the ultra-supercritical boiler when a recirculation pump fails in the related art.
To achieve the above object, the present disclosure provides a starting system for an ultra supercritical boiler, comprising:
a deaerator;
one end of the water inlet pipeline is connected with the downstream of the water storage tank of the ultra-supercritical boiler, and the other end of the water inlet pipeline is connected with the deaerator;
a water outlet pipeline, one end of which is connected with the deaerator, and the other end of which is connected to the upstream of the economizer of the ultra-supercritical boiler;
the pressure adjusting element is arranged on the water inlet pipeline and used for reducing the pressure of liquid in the water inlet pipeline; and
the temperature adjusting element is arranged on the water inlet pipeline and used for reducing the temperature of liquid in the water inlet pipeline.
Optionally, the pressure adjusting element and the temperature adjusting element are integrally provided.
Optionally, the pressure adjusting element and the temperature adjusting element are integrated as a regulating valve capable of regulating the flow size of the water inlet pipeline.
Optionally, the regulating valve is an electric regulating valve and is used for being connected with a control system of the ultra-supercritical boiler.
Optionally, a gate valve is arranged on the water inlet pipeline and used for controlling the opening and closing of the water inlet pipeline.
Optionally, the number of the gate valves is two, and the gate valves are respectively arranged at two sides of the regulating valve.
Optionally, a water feeding pump is arranged on the water outlet pipeline.
Optionally, the starting system further comprises a water inlet branch, one end of the water inlet branch is used for being connected with the water storage tank, the other end of the water inlet branch is connected with the deaerator, the water inlet branch is sequentially connected with an atmospheric expansion device and a condenser, and the atmospheric expansion device is located at the upstream of the condenser.
Optionally, still be connected with the header tank between atmospheric expansion vessel with the condenser, the header tank is connected with the drainage branch road, drainage branch road connection water drainage tank.
According to still another aspect of the present disclosure, there is provided a ultra-supercritical boiler including a water storage tank and an economizer, a start-up system connected between the water storage tank and the economizer, the start-up system being the start-up system for the ultra-supercritical boiler described above.
According to the technical scheme, the water inlet pipeline is additionally arranged between the deaerator and the water storage tank of the ultra-supercritical boiler, and the water inlet pipeline is provided with the element capable of reducing temperature and pressure for the working medium flowing into the economizer from the water storage tank, so that the working medium on the water inlet pipeline can flow into the deaerator after being cooled and reduced in pressure and flows into the economizer of the ultra-supercritical boiler through the water outlet pipeline, and the starting time of the boiler is shortened.
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 diagram of a start-up system for a ultra-supercritical boiler, according to one embodiment of the present disclosure.
Description of the reference numerals
1-a deaerator; 2-a water inlet pipeline; 3-a water outlet pipeline; 31-a first heater system; 4-a regulating valve; 5-gate valve; 6-a water supply pump; 7-a water inlet branch; 71-atmospheric expander; 72-a condenser; 73-a water collection tank; 74-drainage branch; 75-drainage grooves; 76-a second heater system; 81-a water storage tank; 82-economizer.
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 this disclosure, unless otherwise indicated, terms such as "upstream," "downstream," and the like are used herein as defined by the order in which the actual water flows within the lines of the start-up system, and terms such as "first," "second," and the like are used for distinguishing between different components and not for order or importance. Furthermore, in the following description, when referring to the drawings, the same reference numerals in different drawings denote the same or similar elements unless otherwise explained.
According to one embodiment of the present disclosure, as shown in fig. 1, a starting system for a ultra supercritical boiler is provided, which may include a deaerator 1, an water inlet pipe 2, an water outlet pipe 3, a pressure adjusting element, and a temperature adjusting element. Wherein, one end of the water inlet pipeline 2 is used for being connected with the downstream of the water storage tank 81 of the ultra-supercritical boiler, and the other end is connected with the deaerator 1. The water outlet line 3 is connected at one end to the deaerator 1 and at the other end for connection upstream of the economizer 82 of the ultra supercritical boiler. A pressure regulating element may be provided on the water inlet line 2 for reducing the pressure of the liquid in the water inlet line 2. A temperature adjustment element may be provided on the water inlet line 2 for reducing the temperature of the liquid in the water inlet line 2.
Through the technical scheme, the water inlet pipeline 2 is additionally arranged between the deaerator 1 and the water storage tank 81 of the ultra-supercritical boiler, and the water inlet pipeline 2 is provided with the element capable of reducing the temperature and the pressure of the working medium flowing into the economizer 82 from the water storage tank 81, so that the working medium on the water inlet pipeline 2 can flow into the deaerator 1 after being reduced in temperature and pressure, and flows into the economizer 82 of the ultra-supercritical boiler through the water outlet pipeline 3, and the starting time of the boiler is shortened.
It should be noted that, the working medium needs to be cooled and depressurized before flowing into the deaerator 1 to prevent the deaerator 1 from being damaged, and in addition, the working medium in the disclosure may be water or other fluid substances, which is not limited in the disclosure.
Further, the pressure adjusting element and the temperature adjusting element may be integrally provided, or may be a separate pressure adjusting valve and temperature control valve, which is not limited in this disclosure.
Further, as shown in fig. 1, the pressure adjusting element and the temperature adjusting element may be integrated into a regulating valve 4 capable of adjusting the liquid flow of the water inlet pipeline 2, and the flow speed and the flow of the working medium in the water inlet pipeline 2 may be controlled by opening and closing the regulating valve 4, so as to achieve the purpose of cooling and reducing the pressure of the working medium in the water inlet pipeline 2.
Further, the regulating valve 4 may be an electric regulating valve and is used for being connected with a control system of the ultra-supercritical boiler, when the ultra-supercritical boiler is provided with a recirculation pump system, after the control system detects the failure of the recirculation pump system, the control system can open the regulating valve 4, so that the starting system is started, working medium flows from the water storage tank 81 to the water inlet pipeline 2, and enters the economizer 82 of the ultra-supercritical boiler after passing through the deaerator 1, so that the boiler can be started quickly.
According to an embodiment of the present disclosure, as shown in fig. 1, a gate valve 5 may be provided on the water inlet pipe 2 for controlling the opening and closing of the water inlet pipe 2, and when the regulating valve 4 malfunctions or the recirculation pump system may normally operate, the gate valve 5 may be closed, thereby stopping the operation on the water inlet pipe 2.
Further, as shown in fig. 1, the number of the gate valves 5 may be two, and the gate valves 5 may be respectively disposed at two sides of the adjusting valve 4, when the adjusting valve 4 fails, the two gate valves 5 may be closed, and the pipeline between the two gate valves 5 and the adjusting valve 4 may be removed for replacement or maintenance, so that other parts of the water inlet pipeline 2 are not affected, and working medium on the water inlet pipeline 2 is effectively prevented from leaking.
According to one embodiment of the disclosure, as shown in fig. 1, a water feeding pump 6 may be disposed on the water outlet pipeline 3, and the working medium on the water outlet pipeline 3 may be accelerated to be pumped into the ultra-supercritical boiler by the water feeding pump 6, so as to accelerate the starting speed of the boiler.
According to one embodiment of the disclosure, as shown in fig. 1, the starting system may further include a water inlet branch 7, wherein one end of the water inlet branch 7 is used for being connected to a water storage tank 81, the other end of the water inlet branch 7 is connected to the deaerator 1, an atmospheric expansion tank 71 and a condenser 72 are sequentially connected to the water inlet branch 7, and the atmospheric expansion tank 71 is located upstream of the condenser 72. When the ultra-supercritical boiler is not provided with a recirculation pump system or the recirculation pump system thereof fails, working medium in the ultra-supercritical boiler can be sent to the condenser 72 through the atmospheric expansion vessel 71, so that the ultra-supercritical boiler can be started.
Further, as shown in fig. 1, a water collection tank 73 may be further connected between the atmospheric expansion tank 71 and the condenser 72, the water collection tank 73 is connected with a drain branch 74, and the drain branch 74 is connected with a drain tank 75. The drainage branch 74 may be connected to a pipeline between the water collection tank 73 and the condenser 72, and when the condenser 72 fails, the working medium may be sent to the drainage tank 75 through the drainage branch 74 by the atmospheric expansion tank 71 for emergency starting, and the drainage branch 74 may have a plurality of drainage branches, which is not limited in this disclosure.
In addition, the first heater system 31 may be connected between the feed pump 6 and the economizer 82, and the second heater system 76 may be connected between the condenser 72 and the deaerator 1, wherein the first heater system 31 may be a high-pressure heating system, and the second heater system 76 may be a low-pressure heating system, which is not limited in this disclosure.
According to still another aspect of the present disclosure, there is provided a ultra-supercritical boiler, which may include a water storage tank 81 and an economizer 82, and a start-up system is connected between the water storage tank 81 and the economizer 82, wherein the start-up system is the start-up system for the ultra-supercritical boiler described above, and the ultra-supercritical boiler has all the advantages of the start-up system for the ultra-supercritical boiler described above, which will not be repeated herein.
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. A start-up system for a ultra-supercritical boiler, comprising:
a deaerator;
one end of the water inlet pipeline is connected with the downstream of the water storage tank of the ultra-supercritical boiler, and the other end of the water inlet pipeline is connected with the deaerator;
a water outlet pipeline, one end of which is connected with the deaerator, and the other end of which is connected to the upstream of the economizer of the ultra-supercritical boiler;
the pressure adjusting element is arranged on the water inlet pipeline and used for reducing the pressure of liquid in the water inlet pipeline; and
the temperature adjusting element is arranged on the water inlet pipeline and used for reducing the temperature of liquid in the water inlet pipeline.
2. The starting system for a ultra-supercritical boiler according to claim 1, wherein the pressure adjusting element and the temperature adjusting element are integrally provided.
3. The starting system for a ultra-supercritical boiler according to claim 2, wherein the pressure adjusting element and the temperature adjusting element are integrated as a regulating valve capable of regulating the flow size of the water inlet line.
4. A start-up system for a ultra-supercritical boiler according to claim 3, characterized in that the regulating valve is an electric regulating valve and is adapted to be connected to a control system of the ultra-supercritical boiler.
5. A starting system for a ultra-supercritical boiler according to claim 3, wherein a gate valve is provided on the water inlet line for controlling the opening and closing of the water inlet line.
6. The starting system for a ultra-supercritical boiler according to claim 5, wherein the number of gate valves is two and is provided on both sides of the regulating valve, respectively.
7. The starting system for a ultra-supercritical boiler according to claim 1, wherein the water outlet line is provided with a water feed pump.
8. The starting system for a ultra-supercritical boiler according to any one of claims 1-7, further comprising a water inlet branch, wherein one end of the water inlet branch is connected to the water storage tank, the other end of the water inlet branch is connected to the deaerator, an atmospheric expansion vessel and a condenser are sequentially connected to the water inlet branch, and the atmospheric expansion vessel is located upstream of the condenser.
9. The starting system for a ultra-supercritical boiler according to claim 8, wherein a water collection tank is further connected between the atmospheric expansion vessel and the condenser, the water collection tank is connected with a drainage branch, and the drainage branch is connected with a drainage tank.
10. A ultra-supercritical boiler, characterized in that the ultra-supercritical boiler comprises a water storage tank and an economizer, wherein a starting system is connected between the water storage tank and the economizer, and the starting system is the starting system for the ultra-supercritical boiler according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322252197.5U CN220624014U (en) | 2023-08-21 | 2023-08-21 | Starting system for ultra-supercritical boiler and ultra-supercritical boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322252197.5U CN220624014U (en) | 2023-08-21 | 2023-08-21 | Starting system for ultra-supercritical boiler and ultra-supercritical boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220624014U true CN220624014U (en) | 2024-03-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322252197.5U Active CN220624014U (en) | 2023-08-21 | 2023-08-21 | Starting system for ultra-supercritical boiler and ultra-supercritical boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220624014U (en) |
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2023
- 2023-08-21 CN CN202322252197.5U patent/CN220624014U/en active Active
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