CN214836570U - System for improving starting economy - Google Patents
System for improving starting economy Download PDFInfo
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- CN214836570U CN214836570U CN202121226293.7U CN202121226293U CN214836570U CN 214836570 U CN214836570 U CN 214836570U CN 202121226293 U CN202121226293 U CN 202121226293U CN 214836570 U CN214836570 U CN 214836570U
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- jar
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Abstract
The utility model discloses an improve system of machine economy of opening, the utility model discloses a connect the little bypass of low pressure on the low pressure bypass, make the little bypass of low pressure connect the low pressure jar, also carry out the warm jar of small size to the low pressure jar when high-pressure jar and the warm jar of intermediate pressure jar, reach and can shorten the time of opening, improve the effect of machine economy of opening, improvement system operation flexibility.
Description
Technical Field
The utility model belongs to the thermal power field, concretely relates to improve system of machine economy that opens.
Background
The starting mode of the steam turbine is divided into two modes according to the steam inlet mode: the high-pressure cylinder is started, the intermediate pressure cylinder is started, most 300 MW-600 MW units in China are started in two modes, the high-pressure cylinder is safe and reliable in starting, starting time is too long, large units in recent years are started by the intermediate pressure cylinder gradually, starting time is shortened but still can reach 6-9 hours, and the ratio of the warm-up time of a steam turbine to the time for starting the steam turbine to be connected to a power generator to be connected to the power generator is up to 60% at most through statistics of the time for starting the steam turbine to be connected to the power generator. With the rapid increase of clean energy power generation, the requirement on the operation flexibility of a thermal power generating unit is higher and higher, and some units even meet the requirement of two-shift operation, so that how to shorten the starting time of the unit and improve the flexibility of the unit is a key problem of recent research.
Disclosure of Invention
An object of the utility model is to overcome the aforesaid not enough, provide a system for improving machine economy of opening, through the optimization to turbo generator set system architecture, can not only shorten the machine time of opening, improve the machine economy of opening, also can improve the flexibility of system.
In order to achieve the purpose, the utility model discloses a low pressure jar, intermediate pressure jar, high-pressure jar and boiler, the boiler passes through the low pressure bypass and connects the intermediate pressure jar, and the little bypass of low pressure is connected to the low pressure bypass, and the low pressure jar is connected to the little bypass of low pressure.
And a low-pressure bypass control valve is arranged on the low-pressure bypass.
And a low-pressure small bypass control valve is arranged on the low-pressure small bypass.
The low-pressure bypass is connected with the condenser.
The low-pressure cylinder is connected with a generator.
A high-pressure bypass is arranged between the boiler and the high-pressure cylinder.
The high-pressure bypass is provided with a high-pressure bypass regulating valve.
The low pressure small bypass has a current capacity of VWO condition 10%.
Compared with the prior art, the utility model discloses a connect the little bypass of low pressure on the low pressure bypass, make the little bypass of low pressure connect the low pressure jar, also carry out the warm jar of small size to the low pressure jar when high-pressure jar and the warm jar of intermediate pressure jar, reach and can shorten the time of opening the machine, improve the economic nature of opening the machine, improve the effect of system operation flexibility.
Drawings
FIG. 1 is a system configuration diagram of the present invention;
the system comprises a low-pressure cylinder 1, a low-pressure cylinder 2, an intermediate-pressure cylinder 3, a high-pressure cylinder 4, a boiler 5, a low-pressure bypass control valve 6, a low-pressure small bypass control valve 7, a generator 8 and a high-pressure bypass regulating valve.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 1, the utility model discloses a low pressure jar 1, intermediate pressure jar 2, high pressure jar 3 and boiler 4, boiler 4 passes through the low pressure bypass and connects intermediate pressure jar 2, and the little bypass of low pressure is connected to the low pressure bypass, and low pressure jar 1 is connected to the little bypass of low pressure. And a low-pressure bypass control valve 5 is arranged on the low-pressure bypass. And a low-pressure small bypass control valve 6 is arranged on the low-pressure small bypass. The low-pressure bypass is connected with the condenser. The low pressure cylinder 1 is connected with a generator 7. A high-pressure bypass is arranged between the boiler 4 and the high-pressure cylinder 3. The high-pressure bypass is provided with a high-pressure bypass regulating valve 8. The low pressure small bypass has a current capacity of VWO condition 10%.
The utility model discloses an operating method, including following step:
when the unit is started, when the intermediate pressure cylinder 2 enters steam, the low-pressure bypass control valve 5 and the low-pressure small bypass control valve 6 are opened, the low-pressure bypass supplies partial steam to the low-pressure cylinder 1 through the low-pressure small bypass, and the high-pressure cylinder 3 and the intermediate pressure cylinder 2 warm the low-pressure cylinder 1 at the same time. When the steam inlet amount of the middle pressure cylinder 2 reaches the required standard and sufficient steam flows to the low pressure cylinder 1, the low pressure small bypass control valve 6 is closed, and the low pressure bypass control valve 5 is closed according to the requirement.
The small bypass of the low-pressure cylinder of the steam turbine is additionally arranged, steam is introduced into the low-pressure cylinder in the starting process, the low-pressure cylinder is slightly warmed while the high-pressure cylinder and the medium-pressure cylinder are warmed, the warming time is shortened, and the warming time can be expected to be shortened by 0.5-1 hour.
The steam turbine warm-up time is shortened, finally the start-up time is shortened, the flexibility of the unit is improved, meanwhile, after the steam turbine time is shortened, the consumption of water, electricity, coal and the like in the starting process is reduced, and the warm-up economy is improved.
Claims (8)
1. The utility model provides a system for improve machine economy that starts, its characterized in that includes low pressure jar (1), intermediate pressure jar (2), high-pressure jar (3) and boiler (4), and boiler (4) are through low pressure bypass connection intermediate pressure jar (2), and the little bypass of low pressure is connected to the low pressure bypass, and low pressure jar (1) is connected to the little bypass of low pressure.
2. The system for improving the starting economy as claimed in claim 1, wherein a low-pressure bypass control valve (5) is arranged on the low-pressure bypass.
3. The system for improving the starting economy as claimed in claim 1, wherein the low-pressure small bypass is provided with a low-pressure small bypass control valve (6).
4. The system for improving start-up economy of a motor vehicle of claim 1 wherein the low pressure bypass is connected to a condenser.
5. A system for improving the economy of starting a machine according to claim 1, characterised in that the low-pressure cylinder (1) is connected to a generator (7).
6. A system for improving start-up economy according to claim 1, characterised in that a high pressure bypass is arranged between the boiler (4) and the high pressure cylinder (3).
7. A system for improving start-up economy as claimed in claim 6, characterised in that a high pressure bypass regulating valve (8) is provided on the high pressure bypass.
8. The system for improving start-up economy of claim 1 wherein the low pressure small bypass has a current capacity of VWO condition 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121226293.7U CN214836570U (en) | 2021-06-02 | 2021-06-02 | System for improving starting economy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121226293.7U CN214836570U (en) | 2021-06-02 | 2021-06-02 | System for improving starting economy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214836570U true CN214836570U (en) | 2021-11-23 |
Family
ID=78800165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121226293.7U Active CN214836570U (en) | 2021-06-02 | 2021-06-02 | System for improving starting economy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214836570U (en) |
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2021
- 2021-06-02 CN CN202121226293.7U patent/CN214836570U/en active Active
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