CN217681893U - Accelerating device for temperature matching process of gas-steam combined cycle unit - Google Patents
Accelerating device for temperature matching process of gas-steam combined cycle unit Download PDFInfo
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- CN217681893U CN217681893U CN202221780287.0U CN202221780287U CN217681893U CN 217681893 U CN217681893 U CN 217681893U CN 202221780287 U CN202221780287 U CN 202221780287U CN 217681893 U CN217681893 U CN 217681893U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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Abstract
The utility model relates to a temperature matching process accelerating device of a gas-steam combined cycle unit, which comprises a steam distribution mechanism and a heating component which are arranged on a high-pressure cylinder of a steam turbine, wherein the steam distribution mechanism heats the inner wall of the high-pressure cylinder of the steam turbine by steam with low input temperature and large flow of the high-pressure cylinder of the steam turbine; the heating component has two states of connection heating and disconnection heating stopping; the heating component is arranged on the outer wall of the high-pressure cylinder of the steam turbine; the heating component is used for communicating and heating when the temperature of the outer wall of the high-pressure cylinder of the steam turbine is lower than that of the inner wall, and disconnecting the heating to stop heating when the temperatures of the outer wall and the inner wall are equal; the inner wall of the high-pressure cylinder of the steam turbine is heated by the auxiliary steam which is merged into the high-pressure cylinder of the steam turbine and is subjected to temperature reduction by the cooling system; simultaneously, heating the outer wall of the high-pressure cylinder of the steam turbine by a heating component; the inner wall and the outer wall of the high-pressure cylinder of the steam turbine are heated up and heated simultaneously, so that the temperature matching process of the gas turbine and the steam turbine is completed at an accelerated speed, the flexibility of the unit is improved, and the energy consumption is reduced.
Description
Technical Field
The utility model relates to a steam turbine technical field especially relates to a gas-steam combined cycle unit temperature matching process accelerating device.
Background
Along with the gradual increase of the proportion of the power generation and installation of the gas turbine, the safety and the economic benefit in the operation process of the gas turbine are paid more and more attention. The purpose of temperature matching is to reduce thermal stress impact of unit rear-end equipment, especially a steam turbine, and ensure the important mode of the service life of the steam turbine in the starting process of the combined cycle unit. In the whole power chain, the thermal inertia of the gas turbine is relatively smaller than that of the steam turbine, so that a temperature matching function module is usually added in a gas turbine control system of the combined cycle unit, parameters of each outlet of the boiler and the parameter change rate are indirectly controlled by adjusting parameters such as IGV opening degree, fuel quantity and the like of the gas turbine, and the steam turbine is prevented from being subjected to large thermal shock in the starting process. However, in the starting process of many gas-steam combined cycle units, the temperature of the steam turbine cylinder rises too slowly, so that the temperature matching stage lasts too long, and a large amount of energy is consumed. Therefore, the efficiency of the unit during temperature matching is improved, the flexibility of the unit is obviously improved, and the natural gas consumption in the starting process is reduced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in overcoming the steam turbine high pressure cylinder among the prior art and rising temperature slowly, the long defect of temperature matching time to a gas-steam combined cycle unit temperature matching process accelerating device is provided.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a gas-steam combined cycle unit temperature matching process acceleration device, comprising: a steam distribution mechanism and a heating component which are arranged on a high-pressure cylinder of the steam turbine,
the steam distribution mechanism inputs low-temperature and high-flow steam into the high-pressure cylinder of the steam turbine and heats the inner wall of the high-pressure cylinder of the steam turbine;
the heating assembly has two states of connection heating and disconnection heating stopping;
the heating assembly is arranged on the outer wall of the high-pressure cylinder of the steam turbine;
the heating assembly is used for being communicated and heated when the temperature of the outer wall of the steam turbine high-pressure cylinder is lower than that of the inner wall, and the heating assembly is disconnected and stopped when the temperatures of the outer wall and the inner wall of the steam turbine high-pressure cylinder are equal.
Preferably, the steam distribution mechanism comprises an auxiliary steam system and a cooling system;
the auxiliary steam system is communicated with a main steam pipe of the high-pressure cylinder of the steam turbine through a steam pipe, and the cooling system is connected to the steam pipe through a water pipe.
Preferably, the auxiliary steam system comprises an auxiliary steam source,
wherein the auxiliary steam source comprises auxiliary steam or steam of an adjacent furnace;
the air pipe comprises a first air pipe and a second air pipe,
one end of the first air pipe is communicated with the auxiliary steam source, the other end of the first air pipe is communicated with the second air pipe, and the end, which is not communicated with the first air pipe, of the second air pipe is communicated with the main steam pipe.
Preferably, the auxiliary steam system further comprises an auxiliary steam stop valve and an auxiliary steam electric regulating valve which are sequentially arranged on the first air pipe;
and the auxiliary steam stop valve is close to the auxiliary steam source, and the auxiliary steam electric regulating valve is close to the auxiliary steam stop valve.
Preferably, the cooling system comprises a desuperheating water source and a desuperheating water regulating valve,
the temperature-reducing water source is connected to the second air pipe through a water pipe;
the temperature-reducing water regulating valve is arranged on the water pipe and is positioned between the temperature-reducing water source and the second air pipe.
Preferably, a high-pressure main steam valve and a high-pressure regulating valve are sequentially arranged on the main steam pipe,
the high-pressure main steam valve is close to the second air pipe, and the high-pressure regulating valve is close to the high-pressure cylinder of the steam turbine.
Preferably, the heating component comprises a lead, an electric tracing band and a power supply,
the electric tracing band is arranged on the outer wall of the high-pressure cylinder of the steam turbine,
the electric tracing band is communicated with the power supply through the lead and heats the outer wall of the high-pressure cylinder of the steam turbine.
Preferably, the monitoring system further comprises a monitoring component and a control system, wherein the monitoring component is in communication connection with the control system.
Preferably, the monitoring assembly comprises a steam temperature transmitter and a steam pressure transmitter,
steam temperature transmitter with steam pressure transmitter sets gradually on the second trachea way, and is located the water pipe with between the main steam pipe, be used for the monitoring to get into the pressure and the temperature of main steam pipe steam.
Preferably, the monitoring assembly further comprises an external cylinder temperature transmitter,
the outer cylinder temperature transmitter is arranged on the outer wall of the steam turbine high-pressure cylinder and used for controlling the electric tracing band to stop heating when the temperature of the outer wall and the temperature of the inner wall of the steam turbine high-pressure cylinder are monitored to be equal.
Compared with the prior art, the beneficial effects of the utility model reside in that:
according to the accelerating device for the temperature matching process of the gas-steam combined cycle unit, the temperature of the inner wall of the high-pressure cylinder of the steam turbine is increased by merging the high-pressure cylinder of the steam turbine into the steam flow of the auxiliary stripping high-pressure cylinder of the steam turbine subjected to temperature reduction by the cooling system; meanwhile, the temperature of the outer wall of the high-pressure cylinder of the steam turbine is raised through a heating component arranged on the outer wall of the high-pressure cylinder; the inner wall and the outer wall of the high-pressure cylinder of the steam turbine are heated up and heated simultaneously, so that the temperature matching process of the gas turbine and the steam turbine is completed at an accelerated speed, the flexibility of the whole unit is improved, and the consumption of energy is reduced in the starting process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of an optimized main steam structure of a temperature matching process of a gas-steam combined cycle unit provided in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an outer wall and a heat generating component of the high-pressure turbine cylinder shown in fig. 1.
Description of reference numerals:
1. an auxiliary steam system; 11. an auxiliary gas source; 12. an auxiliary steam stop valve; 13. an electric control valve; 14. a first air pipe;
2. a cooling system; 21. a temperature-reducing water source; 22. a desuperheating water regulating valve; 23. a water pipe;
3. a wire; 31. an electric tracing band;
4. a high-pressure cylinder of the steam turbine; 41. a main steam pipe; 42. a high pressure main steam valve; 43. a high pressure regulating valve; 44. an outer cylinder temperature transmitter;
5. a second air pipe; 51. a steam temperature transmitter; 52. a steam pressure transmitter.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
The embodiment of the utility model provides a temperature matching process accelerating device for a gas-steam combined cycle unit, which comprises a steam distribution mechanism and a heating component which are arranged on a high-pressure cylinder 4 of a steam turbine, wherein the high-pressure cylinder of the steam turbine comprises a high-pressure cylinder and a middle-pressure cylinder; the steam distribution mechanism is used for inputting steam into the steam turbine high-pressure cylinder 4 and heating the inner wall of the steam turbine high-pressure cylinder 4; the heating component is arranged on the outer wall of the steam turbine high-pressure cylinder 4 and is used for heating the outer wall of the steam turbine high-pressure cylinder 4; the heating component has two states of connection heating and disconnection heating stop, the heating component is used for connection heating when the temperature of the outer wall of the steam turbine high-pressure cylinder 4 is lower than that of the inner wall, and the heating component is started and stopped when the temperature of the outer wall and the temperature of the inner wall of the steam turbine high-pressure cylinder 4 are equal.
More specifically, when the gas turbine is temperature matched, the steam flow in the main steam pipe 41 decreases and the temperature increases; at this time, the worker introduces the steam in the valve train into the main steam pipe 41 and the steam in the main steam pipe 41 to be mixed, so as to increase the steam flow and slightly reduce the temperature of the steam, and heat the high-pressure cylinder 4 of the steam turbine; meanwhile, the heating component is started to heat the outer wall of the steam turbine high-pressure cylinder 4, and when the temperature of the outer wall of the steam turbine high-pressure cylinder 4 is heated to be equal to the temperature of the inner wall of the steam turbine high-pressure cylinder 4, the heating component stops heating; the temperature matching process of the circulating unit can be completed in an accelerated manner.
In addition, if the power of the heating component is high, the heating component does not need to be started before the circulation unit is started; if the power of the heating component is smaller, the heating component needs to be started in advance for heating before the circulating unit is not started under the condition that the heating capacity is considered to be insufficient.
The temperature of the inner wall of the high-pressure turbine cylinder is increased by merging the high-pressure turbine cylinder with the steam flow of the auxiliary stripping high-pressure turbine cylinder subjected to temperature reduction by the cooling system; meanwhile, the temperature of the outer wall of the high-pressure cylinder of the steam turbine is raised through a heating component arranged on the outer wall of the high-pressure cylinder; the inner wall and the outer wall of the high-pressure cylinder of the steam turbine are heated up and heated simultaneously, so that the temperature matching process of the gas turbine and the steam turbine is completed at an accelerated speed, the flexibility of the whole unit is improved, and the consumption of energy is reduced in the starting process.
Specifically, the steam distribution mechanism comprises an auxiliary steam system 1 and a cooling system 2, and the cooling system 2 is used for cooling and reducing the temperature of a gas source output by the auxiliary steam system 1; further, the auxiliary steam system 1 is communicated with the main steam pipe 41 of the steam turbine high-pressure cylinder 4 through a steam pipe and supplies steam to the steam turbine high-pressure cylinder 4; the cooling system 2 is connected to the air pipe through a water pipe 23 and is used for cooling and reducing the temperature of the air source output by the auxiliary steam system 1; the auxiliary steam system 1 and the cooling system 2 are matched to input low-temperature and high-flow steam to the steam turbine high-pressure cylinder 4, so that the temperature rise of the steam turbine high-pressure cylinder 4 is accelerated; furthermore, the auxiliary steam system 1 comprises an auxiliary steam source 11, wherein the auxiliary steam source 11 comprises auxiliary steam or steam of an adjacent furnace; further, the air pipes include a first air pipe 14 and a second air pipe 5, one end of the first air pipe 14 is communicated with the auxiliary steam source 11, the other end is communicated with the second air pipe 5, and one end of the second air pipe 5, which is not communicated with the first air pipe 14, is communicated with the main steam pipe 41, for inputting the steam of the auxiliary steam source 11 into the main steam pipe 41.
More specifically, the steam output by the auxiliary steam system 1 included in the valve train is cooled and reduced in temperature by the cooling system 2 and then introduced into the main steam pipe 41 and the steam in the main steam pipe 41 to be mixed, so that the steam flow is increased, the temperature of the steam is slightly reduced, and the temperature of the inner wall of the high-pressure cylinder 4 of the steam turbine is increased; the auxiliary gas source 11 is input from one end of the first gas pipe 14, flows into the second gas pipe 5 through the first gas pipe 14 for cooling and temperature reduction, and then is input into the main steam pipe 41; it is noted that the auxiliary steam source 11 is preferably provided with a pipe from the adjacent furnace instead of the conventional auxiliary steam for supplying steam to the shaft seal, and the flow rate of the shaft seal steam is too small to significantly increase the flow rate of the steam entering the turbine.
Specifically, the auxiliary steam system 1 further comprises an auxiliary steam stop valve 12 and an auxiliary steam electric regulating valve 13 which are sequentially arranged on the first air pipe 14, wherein the auxiliary steam stop valve 12 and the auxiliary steam electric regulating valve 13 are used for controlling parameters of an auxiliary steam source 11 which is merged into the main steam pipe 41; the auxiliary steam stop valve 12 is arranged close to the auxiliary steam source 11 and used for controlling the on-off of the auxiliary steam source 11, and the auxiliary steam electric regulating valve 13 is arranged close to the auxiliary steam stop valve 12 and used for regulating the flow of the auxiliary steam source 11.
More specifically, when the temperature of the steam turbine high pressure cylinder 4 is matched, the auxiliary steam stop valve 12 is opened so that the auxiliary steam source 11 can be smoothly conveyed to the first auxiliary steam pipe, and the flow of the auxiliary steam source 11 is controlled and adjusted by the universal auxiliary steam electric adjusting valve 13; and when the temperature matching is completed, the auxiliary steam stop valve 12 is closed, and the auxiliary steam electric regulating valve 13 stops working.
Specifically, the cooling system 2 includes a temperature-reducing water source 21, and the temperature-reducing water source 21 is connected to the second air pipe 5 through a water pipe 23, and is configured to cool the auxiliary steam source 11 input into the second air pipe 5 through the water pipe 23, and further, input the auxiliary steam source 11 after temperature-reducing cooling into the main steam pipe 41.
Specifically, the cooling system 2 further includes a temperature-reducing water regulating valve 22, and the temperature-reducing water regulating valve 22 is used for regulating the flow rate of the temperature-reducing water in the water pipe 23; namely, the temperature-reducing water regulating valve 22 is arranged on the water pipe 23 and is positioned between the temperature-reducing water source 21 and the second air pipe 5; when the auxiliary steam source 11 enters the second air pipe 5 from the first air pipe 14, the temperature-reducing water regulating valve 22 controls the temperature-reducing water quantity and is matched with the auxiliary steam source 11 for temperature-reducing cooling; when the second air pipe 5 has no auxiliary steam flowing through, the temperature-reducing water regulating valve 22 controls the temperature-reducing water source 21 to be closed.
Specifically, a high-pressure main steam valve 42 and a high-pressure regulating valve 43 are sequentially provided on the main steam pipe 41, the high-pressure main steam valve 42 is used for controlling the on/off of the steam after the temperature reduction, and the high-pressure regulating valve 43 is used for pressure regulation when the steam flowing through the main steam pipe 41 is input.
Specifically, the heating component comprises a lead 3, an electric tracing band 31 and a power supply, wherein the electric tracing band 31 is used for heating the outer wall of the high-pressure cylinder 4 of the steam turbine to accelerate the expansion of the outer wall, and the lead 3 is used for connecting the electric tracing band 31 and the power supply to enable the power supply to supply power to the electric tracing band 31; the electric tracing band 31 is arranged on the outer wall of the turbine high-pressure cylinder 4 or in the heat insulation layer on the outer wall of the turbine high-pressure cylinder 4, and one end of the lead 3 is connected with the electric tracing band 31 while the other end is connected with a power supply.
More specifically, the wire 3 connects the power supply with the electric tracing band 31, so that the electric tracing band 31 generates heat and heats the outer wall of the high-pressure turbine cylinder 4, and when the temperature of the outer wall of the high-pressure turbine cylinder 4 is equal to the temperature of the inner wall, the heating is stopped; it should be noted that if the power of the electric tracing band 31 is larger, it is not turned on before the circulation unit is started; if the power of the electric tracing band 31 is small, the electric tracing band 31 needs to be started to heat in advance before the circulation unit is not started under the condition that the heating capacity is considered to be insufficient.
Specifically, the accelerating device for the temperature matching process of the gas-steam combined cycle unit further comprises a monitoring component and a control system, wherein the monitoring component is used for monitoring the temperature and the pressure of the steam after temperature reduction and the temperature of the outer wall of the heated high-pressure cylinder 4 of the steam turbine, and the control system is used for correspondingly adjusting the unit by a worker according to monitoring information fed back to the control system by the monitoring component; and the monitoring component is in communication connection with the control system.
Specifically, the monitoring component comprises a steam temperature transmitter 51 and a steam pressure transmitter 52, which are used for monitoring the temperature of the steam after temperature reduction and transmitting monitoring parameters to the control system, and the steam pressure transmitter 52 is used for monitoring the pressure of the steam after temperature reduction and transmitting the monitoring parameters to the control system; further, a steam temperature transmitter 51 and a steam pressure transmitter 52 are sequentially arranged on the second steam pipe 5, and are located between the water pipe 23 and the main steam pipe 41, and are used for monitoring the pressure and temperature of the steam entering the main steam pipe 41 after temperature reduction.
More specifically, when the auxiliary steam source 11 cooled and cooled by the cooling system 2 is delivered to the steam turbine through the second auxiliary gas pipe, the worker monitors the cooled steam through the steam temperature transmitter 51 and the steam pressure transmitter 52, receives the monitoring results from the steam temperature transmitter 51 and the steam pressure transmitter 52 in the control system, and then can judge whether the cooled steam can enter the main steam pipe 41 according to the monitoring results; in the embodiment, the superheat degree of the steam after temperature reduction is maintained at 30 ℃ or higher, and the steam is merged into the main steam pipe 41, that is, when the monitoring information received by the control system by a worker is that the superheat degree of the steam after temperature reduction is maintained at 30 ℃ or higher, the monitoring information is input into the main steam pipe 41; if the received monitoring information indicates that the steam after the temperature reduction has not maintained the superheat degree of 30 ℃ or higher, the input to the main steam pipe 41 is temporarily stopped.
Specifically, the monitoring assembly further comprises an outer cylinder temperature transmitter 44, the outer cylinder temperature transmitter 44 is used for monitoring the temperature of the outer wall of the high-pressure cylinder 4 of the steam turbine and transmitting monitoring parameters to the control system, and a worker judges whether to continue heating according to a temperature result monitored by the control system; further, an outer casing temperature transmitter 44 is provided on the outer wall of the turbine high pressure cylinder 4.
When the temperature transmitter monitors that the temperature of the outer wall of the high-pressure cylinder 4 of the steam turbine is lower than that of the inner wall, a worker receives a monitoring result according to the control system and communicates the power supply, the lead 3 and the electric tracing band 31 to continue heating; when the temperature transmitter monitors that the temperature of the outer wall of the high-pressure cylinder 4 of the steam turbine is equal to the temperature of the inner wall, the worker disconnects the power supply, the lead 3 and the electric tracing band 31 and stops heating according to the monitoring result received by the control system.
In addition, in the starting process of the gas-steam combined cycle unit, when the load of the cycle unit is 15%, the input temperature of the combustion engine is matched, the flow of main steam entering the turbine is reduced, and the temperature is increased. At the moment, the expansion of the rotor of the steam turbine can accelerate the expansion of the cylinder body of the high-pressure cylinder, and particularly the expansion of the outer cylinder is slow; this circulating unit temperature matching process accelerating device uses in the combustion engine drops into temperature matching process: the method comprises the steps of introducing adjacent furnace steam or auxiliary steam, adjusting the steam flow through an auxiliary steam stop valve 12 and an auxiliary steam electric adjusting valve 13, adjusting parameters through a temperature-reducing water source 21 of a cooling system 2, and then combining the steam with main steam, so that the temperature of the steam entering the steam turbine is reduced, the flow of the steam is increased, the expansion speed of a steam turbine cylinder body is accelerated, and the risk of overlarge expansion difference of the steam turbine is obviously reduced. It is worth noting that the steam after being subjected to temperature reduction by the temperature reduction water has the superheat degree of more than 30 ℃ before steam combination so as to prevent the risk of water accumulation; the steam temperature transmitter 51 and the steam pressure transmitter 52 are used for monitoring the steam after temperature reduction, monitoring results from the steam temperature transmitter 51 and the steam pressure transmitter 52 are received by the control system, and whether the steam after temperature reduction enters the main steam pipe 41 is judged according to the monitoring results.
The auxiliary steam electric adjusting door can be adjusted automatically or manually, and the suggested adjusting rule is as follows:
the temperature of the main steam is less than 300 ℃, and the valve is closed;
the temperature of the main steam is more than or equal to 300 ℃ and less than 400 ℃, a valve is opened, and the opening degree is not higher than 50%;
the temperature of the main steam is more than or equal to 400 ℃, a valve is opened, and the opening degree is more than 50%;
the fuel side signals completion of temperature matching and the valve begins to close at 5% per minute.
Meanwhile, before the circulating unit is not started, the electric tracing band 31 arranged in the outer heat insulation layer of the high-pressure turbine cylinder 4 (or the high-medium pressure cylinder) is started to heat, and the outer cylinder of the high-pressure turbine cylinder 4 is heated; the temperature of the outer cylinder is monitored by the outer cylinder temperature transmitter 44, and whether heating is continued or not is judged according to monitoring information received by the control system.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A temperature matching process accelerating device for a gas-steam combined cycle unit is characterized by comprising: a steam distribution mechanism and a heating component which are arranged on a high-pressure cylinder of the steam turbine,
the steam distribution mechanism inputs low-temperature and high-flow steam into the high-pressure cylinder of the steam turbine and heats the inner wall of the high-pressure cylinder of the steam turbine;
the heating assembly has two states of connection heating and disconnection heating stopping;
the heating assembly is arranged on the outer wall of the high-pressure cylinder of the steam turbine;
the heating assembly is used for being communicated and heated when the temperature of the outer wall of the steam turbine high-pressure cylinder is lower than that of the inner wall, and the heating assembly is disconnected and stopped when the temperatures of the outer wall and the inner wall of the steam turbine high-pressure cylinder are equal.
2. The accelerating device for the temperature matching process of the gas-steam combined cycle unit as recited in claim 1, wherein the steam distribution mechanism comprises an auxiliary steam system and a cooling system;
the auxiliary steam system is communicated with a main steam pipe of the high-pressure cylinder of the steam turbine through a steam pipe, and the cooling system is connected to the steam pipe through a water pipe.
3. The accelerating device of temperature matching process of gas-steam combined cycle unit as recited in claim 2, wherein said auxiliary steam system comprises an auxiliary steam source,
wherein the auxiliary steam source comprises auxiliary steam or adjacent furnace steam;
the air pipe comprises a first air pipe and a second air pipe,
one end of the first air pipe is communicated with the auxiliary steam source, the other end of the first air pipe is communicated with the second air pipe, and the end, which is not communicated with the first air pipe, of the second air pipe is communicated with the main steam pipe.
4. The accelerating device for the temperature matching process of the gas-steam combined cycle unit according to claim 3, wherein the auxiliary steam system further comprises an auxiliary steam stop valve and an auxiliary steam electric regulating valve which are sequentially arranged on the first gas pipe;
and the auxiliary steam stop valve is close to the auxiliary steam source, and the auxiliary steam electric regulating valve is close to the auxiliary steam stop valve.
5. The accelerating device of temperature matching process of gas-steam combined cycle unit as claimed in claim 3, wherein said cooling system comprises a temperature-reduced water source and a temperature-reduced water regulating valve,
the temperature-reducing water source is connected to the second air pipe through a water pipe;
the temperature-reducing water regulating valve is arranged on the water pipe and is positioned between the temperature-reducing water source and the second air pipe.
6. The accelerating device for the temperature matching process of a gas-steam combined cycle unit as recited in claim 3, wherein a high pressure main steam valve and a high pressure adjusting valve are sequentially provided on the main steam pipe,
the high-pressure main steam valve is close to the second air pipe, and the high-pressure regulating valve is close to the high-pressure cylinder of the steam turbine.
7. The accelerating device of temperature matching process of gas-steam combined cycle unit as claimed in claim 3, wherein said heat generating component comprises a wire, an electric tracing band and a power supply,
the electric tracing band is arranged on the outer wall of the high-pressure cylinder of the steam turbine,
the electric tracing band is communicated with the power supply through the lead and heats the outer wall of the high-pressure cylinder of the steam turbine.
8. The accelerating device for the temperature matching process of the gas-steam combined cycle unit as recited in claim 7, further comprising a monitoring component and a control system, wherein the monitoring component is in communication connection with the control system.
9. The gas-steam combined cycle unit temperature matching process accelerating device as set forth in claim 8, wherein the monitoring assembly includes a steam temperature transmitter and a steam pressure transmitter,
steam temperature transmitter with steam pressure transmitter sets gradually on the second gas pipeline, and be located the water pipe with between the main steam pipe, be used for the monitoring to get into the pressure and the temperature of main steam pipe steam.
10. The gas-steam combined cycle plant temperature matching process acceleration device of claim 8, wherein the monitoring assembly further comprises an external cylinder temperature transmitter,
the outer cylinder temperature transmitter is arranged on the outer wall of the steam turbine high-pressure cylinder and used for controlling the electric tracing band to stop heating when the temperature of the outer wall and the temperature of the inner wall of the steam turbine high-pressure cylinder are monitored to be equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221780287.0U CN217681893U (en) | 2022-07-05 | 2022-07-05 | Accelerating device for temperature matching process of gas-steam combined cycle unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221780287.0U CN217681893U (en) | 2022-07-05 | 2022-07-05 | Accelerating device for temperature matching process of gas-steam combined cycle unit |
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| Publication Number | Publication Date |
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| CN217681893U true CN217681893U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221780287.0U Active CN217681893U (en) | 2022-07-05 | 2022-07-05 | Accelerating device for temperature matching process of gas-steam combined cycle unit |
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| CN (1) | CN217681893U (en) |
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2022
- 2022-07-05 CN CN202221780287.0U patent/CN217681893U/en active Active
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