CN211450858U - Single-tank molten salt thermocline heat storage system of coal-fired power generating set - Google Patents

Abstract

The utility model discloses a single-tank molten salt thermocline heat storage system for a coal-fired generating set, comprising a molten salt thermocline heat storage tank, a first heat exchanger and a second heat exchanger; the molten salt thermocline heat storage tank; The molten salt outlet at the top of the tank is connected to the first heat exchanger and the second heat exchanger respectively; the bottom outlet of the molten salt thermocline heat storage tank is connected to the first heat exchanger, and the outlet of the first heat exchanger is connected to the molten salt thermocline storage tank. The inlet of the heat tank; the steam inlet of the first heat exchanger is connected to the high pressure cylinder of the steam turbine and the low pressure cylinder of the steam turbine, and the steam outlet of the first heat exchanger is connected to the steam inlet of the low pressure cylinder of the steam turbine and the inlet of the boiler; the molten salt of the second heat exchanger The outlet is connected to the molten salt inlet at the bottom of the heat storage tank of the molten salt oblique temperature layer, and the second heat exchanger is connected to the heating system; the system described in the utility model is helpful for realizing rapid response to changes in the load of the power grid, and can effectively improve the operation of the unit The flexibility and peak shaving ability of the unit will help to improve the long-term stable operation of the unit.

Description

A single-tank molten salt thermocline heat storage system for coal-fired generating units

technical field

The utility model belongs to the technical field of thermal power generation and energy storage, in particular to a single-tank molten salt thermocline heat storage system for a coal-fired generating set.

Background technique

Molten salt is an integrated heat storage material of "endothermic-heat storage", which refers to salts in a molten state, including inorganic salts, oxide melts, and molten organics. Commonly referred to as molten salts are inorganic salts, of which the two most commonly used salts are nitrates and carbonates. Molten salt has the advantages of low cost, stable chemical properties, etc. It can maintain the liquid state without phase change, large heat capacity and high heat transfer coefficient during the endothermic process.

The single-tank thermocline heat storage uses a heat storage tank, usually using molten salt or heat transfer oil to store heat, which has the advantages of low cost and simple system. The hot and cold fluids are in the same heat storage tank, and the buoyancy formed by the density difference of a single fluid at different temperatures maintains the thermal stratification and separates the high and low temperature fluid regions. When the high temperature fluid is pumped out by the high temperature pump in the upper part of the tank, after exothermic cooling by the heat exchanger, it enters the tank from the lower part of the tank, or when the low temperature fluid is pumped out by the low temperature pump in the lower part of the tank, after being heated by the system, it is sent to the tank by the lower part of the tank. When the upper part enters the tank, there will be a natural stratification with a large temperature gradient and a thin layer in the middle of the tank, that is, the thermocline layer. The fluid in the area above the thermocline keeps high temperature (low density), and the fluid in the area below the thermocline keeps low temperature (high density). Being able to maintain a constant temperature, when the thermocline reaches the top or bottom of the tank, the temperature of the discharged high temperature fluid changes significantly.

U.S. Patent US4124061 describes a single-tank oblique temperature layer heat storage system using liquid-solid mixed heat storage in a solar thermal power station. The heat storage tank adopts a solid heat storage medium, and the heat exchange fluid flows up and down through the solid particle filling layer. , direct heat exchange with the solid medium, and the temperature distribution in the tank is characterized by a thermocline layer from top to bottom when the system is running. This system combines the good heat transfer properties of liquids with the low-cost advantages of solid heat storage, further reducing heat storage costs. However, the mixing between high and low temperature fluids caused by local turbulence is difficult to suppress, which leads to the difficulty in regulating the stable operation of the system.

Domestic patent CN103292486B describes a single-tank-double-tank composite heat storage system and heat storage method for solar thermal power generation. The heat storage system is closely integrated with the solar thermal power generation technology. , Compared with the double-tank heat storage system, the system cost is effectively reduced, but the system design and operating procedures are more complicated.

With the rapid growth of the proportion of renewable energy power generation in my country, the volatility and instability of the power grid have increased, and the power grid's requirements for the number and quality of thermal power generation to participate in peak shaving have continued to increase. In addition, the demand for heat in industrial parks and heating in northern regions in winter is relatively large. The drastic fluctuation of load has brought huge potential safety hazards, affecting the continuous and stable operation of the steam turbine power generation system, and the safety requirements of the generator set are getting higher and higher.

However, the operation mode and control method of traditional thermal power generating units are difficult to achieve rapid response to the load, it is difficult to solve the stable operation of the unit, and it is difficult to ensure the heat demand of the user side in real time. In order to improve the flexibility of the unit operation and peak regulation It can effectively reduce the system cost and meet the heat demand of the user side in real time. A single-tank molten salt thermocline heat storage system is adopted.

Utility model content

In order to solve the problems existing in the prior art, the utility model provides a single-tank molten salt thermocline heat storage system for a coal-fired power generating unit, which can improve the flexibility and peak-shaving capability of the thermal power generating unit, and can meet the requirements of real-time The heat demand on the user side.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is, a single-tank molten salt thermocline heat storage system for a coal-fired generating set, comprising a molten salt thermocline heat storage tank, a first heat exchanger, a second heat exchanger Heater, steam turbine high pressure cylinder, steam turbine low pressure cylinder, high temperature pump, low temperature pump and boiler; the high temperature molten salt outlet of the top of the heat storage tank of the molten salt oblique temperature layer is respectively connected to the molten salt inlet of the first heat exchanger and the second heat exchanger; The low temperature molten salt outlet at the bottom of the molten salt thermocline heat storage tank is communicated with the molten salt inlet of the first heat exchanger, and the molten salt outlet of the first heat exchanger is communicated with the low temperature molten salt inlet at the bottom of the molten salt thermocline heat storage tank;

The steam inlet of the first heat exchanger is connected to the steam extraction port of the high pressure cylinder of the steam turbine and the steam exhaust port of the low pressure cylinder of the steam turbine, and the steam outlet of the first heat exchanger is connected to the steam inlet of the low pressure cylinder of the steam turbine and the steam inlet of the boiler;

The molten salt outlet of the second heat exchanger communicates with the low-temperature molten salt inlet at the bottom of the molten salt oblique temperature layer heat storage tank, and the circulating water outlet/inlet of the second heat exchanger communicates with the heating system.

The molten salt thermocline heat storage tank is a single tank.

Electric heat tracing systems are installed in the molten salt thermocline heat storage tank and in all molten salt pipelines.

An insulating layer is arranged on the molten salt oblique temperature layer heat storage tank, and an insulating layer is arranged on all the pipes of the heat circulating medium.

The high temperature molten salt outlet and the low temperature molten salt inlet of the molten salt oblique temperature layer heat storage tank are respectively provided with a high temperature pump and a low temperature pump, and the pipes from the high temperature pump outlet to the first heat exchanger and the second heat exchanger are all provided with valves. A valve is provided on the pipeline from the outlet of the pump to the first heat exchanger.

The steam extraction port of the high-pressure cylinder is communicated with the steam inlet of the first heat exchanger through the steam extraction pipe of the high-pressure cylinder; the steam exhaust port of the low-pressure cylinder of the steam turbine is connected to the steam inlet of the first heat exchanger through the auxiliary steam exhaust pipe of the low-pressure cylinder, and the steam extraction of the high-pressure cylinder is Valves are arranged on both the pipe and the auxiliary exhaust pipe of the low-pressure cylinder.

Valves are arranged on the molten salt outlet of the first heat exchanger and the second heat exchanger to the low-temperature molten salt inlet pipeline of the molten salt thermocline heat storage tank, and the first heat exchanger to the molten salt thermocline heat storage tank A valve is arranged on the pipeline of the high temperature molten salt inlet.

Valves are arranged on the pipelines from the steam outlet of the first heat exchanger to the high temperature steam inlet of the low pressure cylinder of the boiler and the steam turbine.

Compared with the prior art, the present invention has at least the following beneficial effects: the first heat exchanger and the high-pressure cylinder of the steam turbine can be used to exchange heat with the low-temperature molten salt for energy storage, and can also be used to store the high-temperature molten salt and the low-temperature molten salt. The heat exchange of the exhaust steam of the low pressure cylinder of the steam turbine releases energy, so that the exhaust steam of the low pressure cylinder of the steam turbine returns to the low pressure cylinder of the steam turbine again to do work, and the molten salt is recycled. The temperature layer heat storage system adopts a heat storage tank, which effectively reduces the system cost and system compared with the double-tank molten salt heat storage system. The system as a whole can flexibly adjust the energy storage and release according to the change of the grid load. It is helpful for the stable operation of the unit; the first heat exchanger can be used to heat the molten salt, and can also be used to release heat to the molten salt, the first heat exchanger realizes two purposes; the system of the utility model Helps to achieve rapid response to changes in power grid load, helps to improve the flexibility of unit operation and peak regulation capacity, and helps to improve the long-term stable operation of the unit; at the same time, high-temperature molten salt can pass the second heat exchanger for power Heat/Heating Consumers provide heat.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Among them, 1 is the steam drum, 2 is the boiler, 3 is the high pressure cylinder of the steam turbine, 4 is the medium pressure cylinder of the steam turbine, 5 is the low pressure cylinder of the steam turbine, 6 is the condenser, 7 is the first valve, 8 is the second valve, and 9 is the The third valve, 10 is the fourth valve, 11 is the fifth valve, 12 is the sixth valve, 13 is the seventh valve, 14 is the eighth valve, 15 is the ninth valve, 16 is the tenth valve, and 17 is the tenth valve A valve, 18 is the twelfth valve, 19 is the first heat exchanger, 20 is the second heat exchanger, 21 is a high temperature pump, 22 is a low temperature pump, 23 is a heat supply pump, and 24 is a molten salt thermocline heat storage Tank, 25 is heating/heating user, 26 is electric heat tracing system, 27 is insulation layer, 28 is main steam pipe, 29 is high-pressure cylinder steam extraction pipe, 30 is high-pressure cylinder exhaust pipe, 31 is reheat steam pipe , 32 is the auxiliary exhaust pipe of the low pressure cylinder.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Referring to Fig. 1, a single-pot molten salt thermocline heat storage system for a coal-fired generator set described in the present utility model comprises that steam enters a steam turbine high-pressure cylinder 3 after being heated in a boiler 2 through a steam drum 1, and the steam turbine high-pressure cylinder 3 is heated. The steam extraction port is communicated with the first heat exchanger 19 through the high-pressure cylinder steam extraction pipe 29, and the reheated steam pipe 31 connects the reheated steam of the boiler 2 with the steam turbine middle-pressure cylinder 4, and the steam is exhausted from the steam turbine low-pressure cylinder 5 after completing its work. The steam inlet of the steam turbine low-pressure cylinder 5 is also connected to the high-temperature steam outlet of the first heat exchanger 19, and the steam exhaust port of the steam turbine low-pressure cylinder 5 is connected to the first heat exchanger 19 through the auxiliary steam exhaust pipe 32 of the low-pressure cylinder. low temperature steam inlet,

The high-pressure cylinder extraction steam reaches the first heat exchanger 19 through the high-pressure cylinder extraction pipe 29, and is used to heat the low-temperature molten salt in the lower part of the molten salt thermocline heat storage tank 24, and the heated high-temperature molten salt is stored in the molten salt thermocline layer. In the upper part of the heat storage tank 24, the steam after heat exchange enters the boiler 2 to be heated again and pushes the high pressure cylinder 3 of the steam turbine to do work; the low-temperature molten salt in the lower part of the molten salt thermocline heat storage tank 24 reaches the first heat exchanger 19 and the high temperature through the cryogenic pump 22. The steam exchanges heat, and the heated molten salt enters the upper part of the molten salt thermocline heat storage tank 24; the exhaust steam from the low-pressure cylinder 5 of the steam turbine reaches the first heat exchanger 19 through the auxiliary exhaust pipe 32 of the low-pressure cylinder. In 19, it exchanges heat with the high-temperature molten salt output from the upper part of the thermocline storage tank 24, and the heated steam pushes the low-pressure cylinder 5 of the steam turbine to do work; The heat exchanger 19 heats the exhaust steam of the low pressure cylinder, and the molten salt after heat exchange with the exhaust steam of the low pressure cylinder returns to the lower part of the heat storage tank 24; To the second heat exchanger 20 to heat water/steam to meet the needs of the heating/heating user 25, and then the cooled molten salt is returned to the lower part of the molten salt thermocline heat storage tank 24; the heating/heating user 25 uses a heat pump 23 Send low-temperature water/steam to the second heat exchanger 20 for heat exchange, so as to obtain high-temperature water/steam to meet user needs.

The molten salt thermocline heat storage tank 24 is a single tank, the low temperature molten salt is stored in the lower part of the heat storage tank 24, the high temperature molten salt is stored in the upper part of the molten salt thermocline heat storage tank 24, and the electric heat tracing system 26 is installed in the molten salt. An electric heat tracing system 26 is arranged in the salt thermocline heat storage tank 24 and in the molten salt pipeline; the insulation layer 27 is installed on the molten salt thermocline heat storage tank 24 and all the pipeline surfaces.

The working temperature of the high temperature molten salt of the utility model is 250 to 600°C; the working temperature of the low temperature molten salt is 70 to 250°C; the steam extraction temperature of the high pressure cylinder is 400-600°C;

Referring to FIG. 1, a high temperature pump 21 is provided at the top outlet of the molten salt thermocline heat storage tank 24 in the single-tank molten salt thermocline heat storage system of the coal-fired power generating unit, and the outlet of the high temperature pump 21 is connected to the first through a pipeline. A tenth valve 16 is provided on the high-temperature molten salt inlet of the first heat exchanger 19, the outlet of the high-temperature pump 21 to the first heat exchanger 19; The high temperature molten salt outlet, the twelfth valve 18 is provided at the top inlet of the molten salt thermocline heat storage tank 24, the lower outlet of the molten salt thermocline heat storage tank 24 is provided with a cryopump 22, and the outlet of the cryopump 22 communicates with the twelfth valve 18. A sixth valve 12 is provided on the pipeline of the low temperature molten salt inlet of the heat exchanger 19 and the outlet of the cryopump 22 to the first heat exchanger 19; the outlet of the first heat exchanger 19 is also connected to the molten salt thermocline heat storage tank The inlet at the bottom of 24, the outlet of the first heat exchanger 19 is provided with the seventh valve 13 on the pipeline from the outlet of the molten salt thermocline heat storage tank 24 to the inlet at the bottom of the heat storage tank 24; the steam inlet of the first heat exchanger 19 passes through the high-pressure cylinder steam extraction pipe 29 It is connected to the steam extraction port of the high-pressure cylinder 3 of the steam turbine, and a first valve is provided on the steam extraction pipe 29 of the high-pressure cylinder. The steam outlet of the first heat exchanger 19 is connected to the steam inlet of the steam turbine low-pressure cylinder 5 and the steam inlet of the boiler 2 respectively; and the steam outlet of the first heat exchanger 19 to the steam inlet of the steam turbine low-pressure cylinder 5 and the steam inlet of the boiler 2 correspond respectively A fourth valve 10 and a fifth valve 11 are provided;

The outlet of the high temperature pump 21 is connected to the inlet of the high temperature molten salt of the second heat exchanger 20 through a pipeline, and an eleventh valve 17 is set on the pipeline from the outlet of the high temperature pump 21 to the second heat exchanger 20. The molten salt of the second heat exchanger 20 The outlet is connected to the bottom inlet of the molten salt thermocline heat storage tank 24 through a pipeline, and an eighth valve 14 is provided on the molten salt outlet pipeline of the second heat exchanger 20; the second heat exchanger 20 is connected to the heating system, and the second heat exchange The hot water outlet of the heater 20 is connected to the hot water inlet of the heating/heating user 25, the hot water outlet of the heating/heating user 25 is connected to the hot water inlet of the second heat exchanger, and the hot water outlet of the heating/heating user 25 is connected to the second heat exchanger. A heat supply pump 23 and a ninth valve 15 are sequentially arranged on the pipeline of the second heat exchanger 20 .

The first heat exchanger 19 can not only be used to heat the low temperature molten salt in the lower part of the molten salt thermocline heat storage tank 24, but also can be used to release heat to the high temperature molten salt in the upper part of the molten salt thermocline heat storage tank 24. , the molten salt cannot be heated and exothermic at the same time.

The pipes of the heat circulation medium include molten salt pipes, steam pipes and hot water pipes.

1, the high-pressure cylinder extraction steam passes through the first valve 7, while the low-temperature molten salt in the lower part of the molten salt thermocline heat storage tank 24 passes through the cryopump 22 and the sixth valve 12, and the high-pressure cylinder extraction steam and the low-temperature molten salt are in the first valve. Heat is exchanged in the heat exchanger 19 , the cooled steam is returned to the boiler 2 through the fifth valve 11 for reheating, and the heated high-temperature molten salt is stored in the upper part of the molten salt thermocline heat storage tank 24 through the twelfth valve 18 .

1, the exhaust steam from the low pressure cylinder 5 of the steam turbine passes through the third valve 9, while the high temperature molten salt in the upper part of the molten salt thermocline heat storage tank 24 passes through the high temperature pump 21 and the tenth valve 16, and the exhaust steam from the low pressure cylinder 5 of the steam turbine and The high-temperature molten salt exchanges heat in the first heat exchanger 19, the heated high-temperature steam returns to the low-pressure cylinder 5 of the steam turbine through the pipeline and the fourth valve 10 to do work, and the cooled molten salt is stored in the molten salt through the pipeline and the seventh valve 13. The lower part of the thermocline heat storage tank 24 .

Referring to FIG. 1, the high temperature molten salt in the upper part of the molten salt thermocline heat storage tank 24 exchanges heat in the second heat exchanger 20 through the high temperature pump 21 and the eleventh valve 17 and the water/steam on the user side, and the heated water / The steam returns to the user side to meet the heat demand, and the cooled molten salt reaches the lower part of the molten salt thermocline heat storage tank 24 through the eighth valve 14 for storage.

Referring to Fig. 1, a method for storing heat in a single-tank molten salt thermocline layer of a coal-fired generator set described in the present utility model is as follows:

When the grid load decreases, open the first valve 7, the fifth valve 11, the sixth valve 12, the twelfth valve 18 and the cryopump 22, close the third valve 9, the fourth valve 10, the seventh valve 13, the tenth valve The valve 16 and the high-temperature pump 21 extract steam from the high-pressure cylinder 3 of the steam turbine to reduce the output of the steam turbine, thereby reducing the output power of the unit; the extraction steam in the high-pressure cylinder passes through the first valve 7, while the molten salt oblique temperature layer heat storage tank 24 The low-temperature molten salt in the lower part passes through the cryopump 22 and the sixth valve 12, and the two exchange heat in the first heat exchanger 19; in the first heat exchanger 19, the high-temperature steam and the low-temperature molten salt heat-exchange into low-temperature steam respectively. And the high temperature molten salt, the low temperature steam returns to the boiler 2 through the fifth valve 11 for heating, and the high temperature molten salt is stored in the upper part of the molten salt thermocline heat storage tank 24 through the twelfth valve 18.

When the grid load increases, open the third valve 9, the fourth valve 10, the seventh valve 13, the tenth valve 16 and the high temperature pump 21, close the first valve 7, the fifth valve 11, the sixth valve 12, the eighth valve The valve 14, the twelfth valve 18 and the cryogenic pump 22 heat the exhaust steam of the low-pressure cylinder into high-temperature steam and return it to the low-pressure cylinder 5 of the steam turbine to do work, so as to increase the output of the steam turbine and improve the output power of the unit; the exhaust steam of the low-pressure cylinder of the steam turbine passes through The third valve 9, at the same time, the high temperature molten salt in the upper part of the molten salt thermocline heat storage tank 24 passes through the high temperature pump 21 and the tenth valve 16, and the two exchange heat in the first heat exchanger 19; in the first heat exchanger 19 Inside, the low temperature steam and the high temperature molten salt exchange heat into high temperature steam and low temperature molten salt respectively.

When the user side heat needs heat, open the eighth valve 14, the ninth valve 15, the eleventh valve 17, the high temperature pump 21 and the heat supply pump 23, close the seventh valve 13 and the tenth valve 16; The high-temperature molten salt passes through the high-temperature pump 21 and the eleventh valve 17, while the user-side water/steam passes through the heat supply pump 23 and the ninth valve 15, and the two exchange heat in the second heat exchanger 20; Inside, the low-temperature water/steam is heated into high-temperature water/steam that meets the user's needs, and the high-temperature molten salt becomes low-temperature molten salt, which is then stored in the lower part of the heat storage tank 24 through the eighth valve 14 .

When the user side does not need heat, the eighth valve 14, the ninth valve 15, the eleventh valve 17 and the heat supply pump 23 are closed to stop the supply of heat to the user side.

To sum up, the system and method can realize fast response to load, can solve the stable operation of the unit, can ensure the heat demand on the user side in real time, and can effectively improve the flexibility of the unit operation and the peak shaving capability.

Claims (8)

1. a single-tank molten salt thermocline heat storage system for coal-fired generating units, is characterized in that, comprises molten salt thermocline heat storage tank (24), first heat exchanger, second heat exchanger, steam turbine high pressure The cylinder (3), the steam turbine low pressure cylinder (5), the high temperature pump (21), the low temperature pump (22) and the boiler (2); the high temperature molten salt outlet at the top of the molten salt thermocline heat storage tank (24) is respectively connected to the first heat exchanger. The molten salt inlet of the heat exchanger (19) and the second heat exchanger (20); the low temperature molten salt outlet at the bottom of the molten salt thermocline heat storage tank (24) is connected to the molten salt inlet of the first heat exchanger (19), and the first The molten salt outlet of a heat exchanger (19) communicates with the low-temperature molten salt inlet at the bottom of the molten salt thermocline heat storage tank (24); The steam inlet of the first heat exchanger (19) is connected to the steam extraction port of the high pressure cylinder (3) of the steam turbine and the steam exhaust port of the low pressure cylinder (5) of the steam turbine, and the steam outlet of the first heat exchanger (19) is connected to the low pressure cylinder (5) of the steam turbine. 5) the steam inlet of the boiler and the steam inlet of the boiler (2); The molten salt outlet of the second heat exchanger (20) communicates with the low-temperature molten salt inlet at the bottom of the molten salt thermocline heat storage tank (24), and the circulating water outlet/inlet of the second heat exchanger (20) communicates with the heating system. 2 . The single-tank molten salt thermocline heat storage system for a coal-fired generating set according to claim 1 , wherein the molten salt thermocline heat storage tank ( 24 ) is a single tank. 3 . 3. The single-tank molten salt thermocline heat storage system of coal-fired generating set according to claim 1, is characterized in that, in the molten salt thermocline heat storage tank (24) and all molten salt pipelines, are provided with Electric heat tracing system (26). 4. The single-tank molten salt thermocline heat storage system for coal-fired generating units according to claim 1, wherein the molten salt thermocline heat storage tank (24) is provided with a thermal insulation layer, and the All pipes are provided with insulation layers. 5. The single-tank molten salt thermocline heat storage system for coal-fired generating units according to claim 1, wherein the high temperature molten salt outlet and the low temperature molten salt inlet of the molten salt thermocline heat storage tank (24) are respectively Correspondingly, a high temperature pump (21) and a low temperature pump (22) are provided, the pipes from the outlet of the high temperature pump (21) to the first heat exchanger and the second heat exchanger are all provided with valves, and the outlet of the low temperature pump (22) is connected to the first heat exchanger. A valve is provided on the pipe of the heater. 6. The single-tank molten salt thermocline heat storage system for coal-fired generating units according to claim 1, wherein the high-pressure cylinder steam extraction port is connected to the first heat exchanger (19) through the high-pressure cylinder steam extraction pipe (29). ) is connected to the steam inlet of the first heat exchanger (19); the steam exhaust port of the low-pressure cylinder (5) of the steam turbine is connected to the steam inlet of the first heat exchanger (19) through the low-pressure cylinder auxiliary exhaust pipe (32), and the high-pressure cylinder steam extraction pipe (29) is connected to the low-pressure cylinder. Valves are arranged on the auxiliary exhaust pipes (32). 7. The single-tank molten salt thermocline heat storage system for a coal-fired generating set according to claim 1, wherein the molten salt outlet of the first heat exchanger (19) and the second heat exchanger (20) is to Valves are provided on the low temperature molten salt inlet pipeline of the molten salt thermocline heat storage tank (24), and the first heat exchanger (19) is connected to the pipeline of the high temperature molten salt inlet of the molten salt thermocline heat storage tank (24). A valve is provided. 8. The single-pot molten salt thermocline heat storage system for coal-fired power generating units according to claim 1, wherein the steam outlet of the first heat exchanger (19) is directed to the boiler (2) and the steam turbine low-pressure cylinder (5). ) are equipped with valves on the pipeline of the high temperature steam inlet.

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