JPH07332014A - Blowing out facility - Google Patents

Abstract

PURPOSE:To provide flexibility at execution timing by comprising a permanent power generating plant, a temporary air compressing plant, a temporary piping provided with a foreign matter recovery device for recovering a foreign matter from a steam turbine inlet valve upstream side to a condenser, and a permanent piping in the power generating plant in a blowing out facility in a combined cycle electric power plant. CONSTITUTION:An exhaust heat recovery boiler 1, a gas turbine 2, a high pressure steam turbine 3, an intermediate pressure steam turbine 4, a low pressure steam turbine 5, and a generator 6 are directly connected to each other on a single axis. A temporary air compressor 33 is operated, and accumulation is carried out to a high pressure evaporator 35, a high pressure drum 7, a high pressure superheater 8, a high pressure main steam pipe 10, and a high pressure main closing valve 11, and via a bypass pipe 12 to an operation valve 15. The operation valve 15 is fully opened for a short time, and on the basis of nicks due to collision against a blowing out determining target 14, it is determined whether any foreign matter remains or not, and the foreign matter is captured by a foreign matter recovery device 17. These accumulation and discharge are repeated until the foreign matters are completely eliminated. The blowing determining out target 14 is removable from a piping system so as to be easily removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blowing-out facility for equipment and piping equipment in the process of constructing a single-shaft combined cycle power generation facility.

[0002]

2. Description of the Related Art Usually, main steam and reheat steam pipes are flushed (blowing out) in the pipes and opened to the atmosphere (free blow). Blowing out is one of the important works required before the commissioning of the installed steam turbine cycle equipment. Its purpose is to:
It removes foreign matter that enters the equipment such as welding rods and spatter, and removes foreign matter that occurs inside the equipment such as rust. Therefore, the force by which the steam blows off the foreign matter in the pipe at the time of blowing out must be stronger than the force at the time of normal operation. When steam is used as a medium for flushing, it is also called steam flushing or steam blow.

By the way, the force by which the steam blows off the foreign matter remaining in the pipe can be considered as follows. The flow of fluid in a conduit with foreign matter has very little energy loss between the flow of the pipeline enclosing the foreign matter, and if the fluid is treated as incompressible, Bernoulli's theorem tells that Energy is generally expressed by the following equation.

[0004]

[Equation 1]

Where p: pressure in one streamline,
γ: specific weight of fluid, Z: height from the reference horizontal plane, g: acceleration of gravity, V: flow velocity Now, if a fluid of Qm ³ per second is flowing in the pipeline, the total energy of the fluid is P is Q times the energy given by the above formula.

[0006]

[Equation 2]

In the case of an object in a fluid or a flow of a pipeline or the like which is filled with the fluid, the term of the pressure γZ based on the height is neglected and treated, and this amount may be corrected later. However, when handling the flow around an object in gas, γ is small and the term γZ can be ignored. Therefore, when considering only the dynamical action, it is expressed as follows.

[0008]

[Equation 3]

Since the static pressure change before and after the foreign matter in the conduit is small, the motive power P available from this air flow obtained by removing the static pressure from Bernoulli's theorem, that is, the kinetic energy of a unit volume of gas is The dynamic pressure γ / 2g * V (kg / m) is multiplied by the flow rate (m ³ / sec.). That is,

[0010]

[Equation 4] Therefore, the force F by which the gas blows off the foreign matter remaining in the pipe is expressed by the following equation.

[0011]

[Equation 5]

Where A is a cross-sectional area that receives the flow of foreign matter,
D: inner diameter of pipe, W: flow rate of gas, v: specific volume of gas Therefore, in order to compare the action force at the time of normal operation and at the time of blowing out, γ · V ² or W ² · v may be compared. It will be. Cleaning these (C
F). This also serves as a guide for operation during blowing out.

As shown in FIG. 2, a temporary facility system at the time of blowing out in a conventional steam turbine plant has a combustion turbine 41 and a steam turbine 42 for converting thermal energy of steam generated in the combustion boiler 41 into mechanical energy. The condenser 50, which cools the steam after work and returns it to the condensate, is the main component device.

In the figure, in the blowing out of the main steam pipe, the steam generated in the combustion boiler 41 passes through the high pressure main steam pipe 44 to the high pressure main shut-off valve 45 and is blown through the temporary steam pipe 52 from the temporary upper lid. The target 53 for out determination and the silencer 55 are opened to the atmosphere. The steam used for blowing out is not recovered in the condenser 50, and therefore must be constantly replenished. Therefore, the inside of the condenser 50 is maintained in a vacuum to degas the dissolved oxygen in the makeup water, and is supplied to the combustion boiler 41 through the preboiler system equipment.

When the reheated steam pipe is blown out, the steam generated in the combustion boiler 41 passes through the reheater 47 and the high temperature reheated steam pipe 48, is guided to the reheated steam main shutoff valve 49, and is temporarily installed from the temporary upper lid. It is opened to the atmosphere through the steam pipe 53, the blowing-out determination target 53, and the silencer 55. On the other hand, the low temperature reheat steam pipe 46 is connected to the combustion boiler 4
From 1, steam flows in the direction opposite to the normal steam flow. The connection point between the high-pressure turbine 42 and the low-temperature reheat steam pipe 46 is
Stop plates are installed to prevent steam from flowing into the high-pressure turbine. Therefore, the steam flows from the upstream of the stop plate to the temporary steam pipe 5
It is opened to the atmosphere through the blow-out determination target 53 and the silencer 55.

The steam used for blowing out is not recovered in the condenser 50 and must be constantly replenished. Therefore, the inside of the condenser 50 maintains a vacuum to degas the dissolved oxygen in the makeup water, and the water is supplied to the combustion boiler through the preboiler system equipment.

In the case of a single-shaft combined cycle plant (non-reheat), the heat energy of the gas turbine and the exhaust heat recovery boiler using the high temperature gas discharged from the gas turbine as a heat source, and the steam generated in the exhaust heat recovery boiler The main component equipment is a steam turbine that converts electricity into mechanical energy.

FIG. 3 is a schematic system diagram of a conventional single-shaft combined cycle power generation facility in which a gas turbine 71, a generator 72, and a steam turbine 73 are arranged on a single shaft in this order at the time of blowing out.

The blowing out of the high-pressure main steam pipe 76 connects the gas turbine 71 and the power generator 72 directly, disconnects only the steam turbine 73 from the power train, and causes the exhaust heat recovery boiler 74 to generate steam, so that the gas turbine 71 is generated.
To drive. The condenser 85 holds a vacuum and waits for cooling the excess steam. Further, the entire amount of steam used for blowing out is not recovered in the condenser 85, so that it is necessary to constantly replenish it. Therefore, dissolved oxygen in the makeup water is degassed by vacuum in the condenser, and is supplied to the exhaust heat recovery boiler 74 through the preboiler system equipment.

The steam generated in the exhaust heat recovery boiler 74 is guided to the high-pressure main blocking valve 77 through the high-pressure main steam pipe 76, passes through the temporary steam pipe 81 from the temporary upper lid, and the blowing-out determination target 82 and the temporary operation valve 83. The silencer 91 is opened to the atmosphere through the temporary pipe 84.

The blowing out of the low-pressure main steam pipe 79 connects the gas turbine 71 and the generator 72 directly, disconnects only the steam turbine 73 from the power train, and causes the exhaust heat recovery boiler 74 to generate steam, thereby generating the steam. To drive. The condenser 85 holds a vacuum and waits for cooling the excess steam. Further, the entire amount of steam used for blowing out is not recovered in the condenser 85, so that it is necessary to constantly replenish it. Therefore, dissolved oxygen in the makeup water is degassed by vacuum in the condenser, and is supplied to the exhaust heat recovery boiler 74 through the preboiler system equipment.

The steam generated in the exhaust heat recovery boiler 74 is guided to the low-pressure main stop valve 80 through the low-pressure main steam pipe 79, passes through the temporary steam pipe 81 from the temporary upper lid, and the blowing-out determination target 82 and the temporary operation valve. The silencer 91 is opened to the atmosphere via 83 and the temporary pipe 84.

[0023]

Next, the problems of the above-mentioned prior art will be described below. (1) Non-flexible process The blowing out period is limited to immediately after ignition.
That is, since steam as a flushing medium is not generated without a heat source, it is inevitably carried out after ignition. The requirement from the steam turbine side is that the foreign matter remaining in the equipment is to be operated after removing it as much as possible from the viewpoint of equipment protection, and thus there is no flexibility in the timing of blowing out.

(2) High-load operation and realignment setting Basically, the force by which the steam blows off the foreign matter in the pipe at the time of blowing out should be stronger than the force at the time of normal operation. Gas turbine related adjustments must be completed before the start of blowing out, but it is difficult to do everything. However, in such a state, in order to produce an appropriate steam condition for obtaining the required cleaning force in the exhaust heat recovery boiler, the gas turbine must be operated under high load.

In the case of the single-shaft combined cycle power generation plant shown in FIG. 3, it is necessary to connect the steam turbine to the power train after the completion of blowing out, and perform the alignment setting as the original power train again.

(3) In the early engineering stage, the layout of the temporary equipment for complex blowing-out becomes wide,
A great deal of effort is required for engineering in the preparatory stage. Temporary piping planning from the inside of the turbine building to the outside must be done in the early stage of engineering, which causes complications with other engineering.

(4) Noise A large amount of noise is generated because the steam is released to the atmosphere. In recent years, emphasis has been placed on environmental protection, and there is an increasing demand for noise reduction even during the construction period. Although a silencer is installed at the location open to the atmosphere to reduce noise, a large cost is required to satisfy all the conditions.

The present invention has been made in order to solve the various problems in the above-mentioned prior art, and its purpose is to have flexibility in the blowing-out timing, to enable high load operation, low noise, and other advantages. It is to provide a blowout facility for a single-axis combined cycle power generation facility that does not confound with engineering.

[0029]

In order to achieve the above-mentioned object, the first aspect of the present invention is to provide a uniaxial gas turbine,
In the blowout facility of the single-shaft combined cycle power generation facility consisting of the power train, which is directly connected to each of the medium / low pressure steam turbines and the generator, and the exhaust heat recovery boiler, the permanent facility of the power generation facility and the permanent facility A temporary air compression facility including a temporary pipe, a temporary pipe in which a foreign matter collector for collecting foreign matter from the steam turbine inlet valve upstream to the condenser is arranged, and a permanent pipe of the power generation facility. Characterize.

[0030]

According to the present invention, there is flexibility at the time of performing blowout, and the amount of work required for it is small. Further, the routing range of the temporary pipe is reduced, the engineering amount is reduced, the capacity of the temporary air compressor can be reduced, and the noise can be reduced.

[0031]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a system diagram of an embodiment of the present invention. According to the figure, a single-shaft combined cycle power generation facility including a power train and an exhaust heat recovery boiler, which are directly connected on a single shaft in the order of a gas turbine, a steam turbine, and a generator, is shown. The blowing out facility will be described.

As shown in the figure, reference numeral 1 denotes an exhaust heat recovery boiler, which is connected to the exhaust heat recovery boiler 11 to generate gas turbine 2, high pressure steam turbine, intermediate pressure steam turbine 4, low pressure steam turbine 5, and power generation. The machine 6 is directly connected on one axis. Other main components include a high-pressure drum 7, a high-pressure superheater 8, a reheater 9, and a blowing-out determination target 1.
4, temperature reducing device 16, foreign matter collector 17, condenser 19, medium pressure drum 20, medium pressure superheater 21, low pressure drum 27, low pressure superheater 28, condenser vacuum pump 32, temporary air compressor facility 33 , High pressure evaporator 35, medium pressure evaporator 36, low pressure evaporator 3
7 is provided. In addition, there are a high pressure main steam pipe 10, an intermediate pressure main steam pipe 22, a low temperature reheat pipe 24, a high temperature reheat pipe 25, a low pressure main steam pipe 29, a makeup water pipe 31, a temporary air pipe 34 as various pipes, and a high pressure as various valves. Main stop valve 11,
Bypass valve 12, bypass inlet valve 13, operation valve 15, bypass stop valve 18, intermediate pressure main steam stop valve 23, reheat main stop valve 2
6. A low pressure main stop valve 30 is provided.

Next, the preconditions on the plant side are as follows. That is, plant cooling water (bearing cooling water, seawater) system operation, plant condensate recirculation operation, plant auxiliary steam system operation, plant condenser vacuum holding, plant control vacuum system operation.

First, the blowing out of the high-pressure main steam system will be described first. In FIG. 1, the temporary air compressor 33 is operated, and the high-pressure main steam system is pressurized and accumulated through the temporary air pipe 34 and is maintained at a prescribed pressure. The pressure accumulation range is from the high-pressure evaporator 35, the high-pressure drum 7, the high-pressure superheater 8, the high-pressure main steam pipe 10, the high-pressure main blocking valve 11, and from the upstream of the high-pressure main blocking valve 11 through the bypass pipe 12 to the operation valve 15. Is.

In blowing out, the operation valve 15 is closed to full opening in a short time, and the air accumulated in the high-pressure main steam system is discharged to the condenser 19. The bypass pipe 12 is provided with a blowing-out determination target 14 and a foreign matter collector 17 represented by a cyclone separator, a strainer and the like. The foreign matter remaining in the high-pressure main steam system is blown away by the air, collides with the blowing-out determination target 14, and its presence is confirmed by a dent mark, and the foreign matter collector 17 captures the foreign matter.

The operation of accumulating and releasing pressure is repeated until there is no foreign matter in the system. Therefore, the blowing-out determination target 14 is not installed in the condenser vacuum holding area so that the blowing-out determination target 14 can be easily taken out and quickly determined, and the bypass inlet valve 13 and the bypass sluice valve 18 are used to remove the blow-out determination target from the piping system. It shall be separable. At the joint between the bypass pipe 12 and the condenser 19, a cooling water pipe damage preventing device is permanently installed in the condenser, and the condenser 17 is provided even for minute foreign matter passing through the foreign matter collector 17. Is protected.

The air is discharged into the condenser 19 having a noise reducing effect and expands, but is further discharged into the atmosphere by the condenser vacuum pump 32. If the capacity of the condenser vacuum pump 32 is insufficient, a temporary vacuum pump is added to handle it.

Second, the blowing out of the medium pressure main steam system will be described. Operate the temporary air compressor 33,
The intermediate pressure main steam system is boosted and accumulated through the temporary air pipe 34, and is maintained at a prescribed pressure. The pressure accumulation range is from the intermediate pressure evaporator 36, the intermediate pressure drum 20, the intermediate pressure superheater 21, the intermediate pressure main steam pipe 22 to the intermediate pressure main steam stop valve 23, and from the upstream of the intermediate pressure main steam stop valve 23 to the bypass pipe 12. Up to the operation valve 15.

In blowing out, the operation valve 15 is closed to full opening in a short time, and the air accumulated in the medium pressure main steam system is discharged to the condenser 19. The bypass pipe 12 is provided with a blowing-out determination target 14 and a foreign matter collector 17 represented by a cyclone separator, a strainer and the like. The foreign matter remaining in the medium-pressure main steam system is blown away by the air, collides with the blowing-out determination target 14, confirms its existence from the dent mark, and captures the foreign matter with the foreign matter collector 17.

The operation of accumulating and releasing pressure is repeated until there is no foreign matter in the system. Therefore, the blowing-out determination target 14 can be easily taken out, and is not installed in the condenser vacuum holding area so that the determination can be performed quickly, and is separated from the piping system by the bypass inlet valve 13 and the bypass sluice valve 18. It should be possible. At the joint between the bypass pipe 12 and the condenser 19, a cooling water pipe damage prevention device is permanently installed inside the condenser, and the condenser 19 is protected even against minute foreign matter that has passed through the foreign matter collector 17. To be done.

The air is discharged to the condenser 19 having a noise reducing effect and expands, but is further discharged to the atmosphere by the condenser vacuum pump 32. If the capacity of the condenser vacuum pump 32 is insufficient, a temporary vacuum pump is added to handle it.

Thirdly, blowing out of the reheat steam system will be described. The temporary air compressor 33 is operated, and the high pressure main steam system is pressurized and accumulated through the temporary air pipe 34 and is maintained at a prescribed pressure. The pressure accumulation range is from the high pressure evaporator 35, the high pressure drum 7, the high pressure superheater 8, the high pressure main steam pipe 10, the high pressure main stop valve 11 upstream to the bypass stop valve 13, and the high pressure main stop valve 11 upper lid to the bypass pipe 12. The low temperature reheat pipe 24, the reheater 9, the high temperature reheat pipe 25, the reheat steam valve 26, the upper lid, the bypass pipe 12 and the operation valve 15.

In blowing out, the operation valve 15 is closed to full opening in a short time, and the air accumulated in the high-pressure main steam system is discharged to the condenser 19. The bypass pipe 12 is provided with a blowing-out determination target 14 and a foreign matter collector 17 represented by a cyclone separator, a strainer and the like. The foreign matter remaining in the high-pressure main steam system is blown away by the air, collides with the blowing-out determination target 14, and its presence is confirmed by a dent mark, and the foreign matter collector 17 captures the foreign matter.

The operation of accumulating and releasing pressure is repeated until there is no foreign matter in the system. Therefore, the blowing-out determination target 14 can be easily taken out, and is not installed in the condenser vacuum holding area so that the determination can be performed quickly, and is separated from the piping system by the bypass inlet valve 13 and the bypass sluice valve 18. It should be possible. At the joint between the bypass pipe 12 and the condenser 19, a cooling water pipe damage prevention device is permanently installed inside the condenser, and the condenser 19 is protected even against minute foreign matter that has passed through the foreign matter collector 17. To be done.

The air is discharged into the condenser 19 having a noise reducing effect and expands, but is further discharged into the atmosphere by the condenser vacuum pump 32. If the capacity of the condenser vacuum pump 32 is insufficient, a temporary vacuum pump is added to handle it.

Fourth, the blowing out of the low pressure steam system will be described. The temporary air compressor 33 is operated to pass through the temporary air pipe 34 to boost and accumulate the pressure of the high-pressure main steam system and maintain it at a prescribed pressure. The pressure accumulation range is from the low pressure evaporator 37, the low pressure drum 27, the low pressure superheater 28, the low pressure main steam pipe 29, to the low pressure main stop valve 30, and from the upstream side of the low pressure main stop valve 30 to the bypass stop valve 12 to the operation valve 15. Is.

In blowing out, the operation valve 15 is closed to full opening in a short time, and the air accumulated in the low-pressure main steam system is discharged to the condenser 19. The bypass pipe 12 is provided with a blowing-out determination target 14 and a foreign matter collector 17 represented by a cyclone separator, a strainer and the like. The foreign matter remaining in the high-pressure main steam system is blown away by the air, collides with the blowing-out determination target 14, and its presence is confirmed by a dent mark, and the foreign matter collector 17 captures the foreign matter.

The operation of accumulating and releasing pressure is repeated until there is no foreign matter in the system. Therefore, the blowing-out determination target 14 can be easily taken out, and is not installed in the condenser vacuum holding area so that the determination can be performed quickly, and is separated from the piping system by the bypass inlet valve 13 and the bypass sluice valve 18. It should be possible. At the joint between the bypass pipe 12 and the condenser 19, a cooling water pipe damage prevention device is permanently installed inside the condenser, and the condenser 19 is protected even against minute foreign matter that has passed through the foreign matter collector 17. To be done.

The air is discharged into the condenser 19 having a noise reducing effect and expands, but is further discharged into the atmosphere by the condenser vacuum pump 32. If the capacity of the condenser vacuum pump 32 is insufficient, a temporary vacuum pump is added to handle it.

According to this embodiment described above, the following operational effects can be obtained. (1) For processes without flexibility, install temporary air compressor equipment 33 and use air instead of steam as the flushing medium to install without affecting the adjustment process of main equipment. As soon as the construction is completed, blowing out can be carried out. (2) For high load operation and realignment setting, the free blow operation is performed without operating the gas turbine, so there is no need to disconnect the steam turbine. Therefore, neither high load operation by the gas turbine nor realignment of the power train is necessary. (3) As for the complicated process in the early engineering stage, the free blow pipe basically uses a large amount of permanent pipes, so that the labor required for engineering can be reduced. However, a temporary facility for arranging the free blow determination target 14 and the foreign matter collector 17 such as a cyclone separator and a strainer for collecting the blown foreign matter in the pipe connected to the condenser 19 is only considered. Therefore, it is not necessary to study a wide range of piping routes. Further, the temporary air compressor equipment 33 is arranged near the exhaust heat recovery boiler 1 to supply air to use the high pressure drum 7, the intermediate pressure drum 20, and the low pressure drum 27 of the exhaust heat recovery boiler 1 as air reservoirs. It is preferable. Therefore, blowing out with air will reduce the complications in the early stages of engineering. (4) With respect to noise, it is possible to significantly reduce environmental noise by setting the discharge end of the blowing out to the condenser 19. (5) Advantages of increasing cleaning force The theoretical outflow rate of gas is expressed by the following equation.

[0051]

[Equation 6]

Here, V: theoretical outflow velocity, k: specific heat ratio of gas, p1: primary pressure (original pressure), p2: secondary pressure, v: specific volume of gas The discharge end of the blowing out is condensed by the condenser 19 By this, the pressure on the secondary side falls from atmospheric pressure to the vacuum side. This increases the flow velocity in the pipe. Therefore, the cleaning force γ · V ² or W ² · v also increases. This means that a large cleaning force can be obtained even with the same primary pressure (original pressure), and the same cleaning force can be obtained even if the primary pressure is reduced. This leads to a reduction in the capacity of the temporary air compressor 22.

The air discharged to the condenser 19 is discharged to the atmosphere by the permanent condenser vacuum pump 32. The permanent condenser vacuum pump 32 is an H.V. E. I (HEAT EXCHA
It is basically selected from NGER INSTITUTE, TABLE 4), but it is necessary to coordinate with the stored air capacity in the facility, and depending on the study results, a temporary vacuum pump may be required to be added.

[0054]

As described above, the present invention has the following effects. (1) There is flexibility in the implementation time. In other words, after the installation is completed, blowing out is possible without operating the main engine, and the flexibility of the process is widened. (2) The amount of work required for blowing out is small. That is, since the main engine is not operated, the number of auxiliary machines operated during blowing out is small and the burden on the operator is reduced. (3) The effort of examination in the early engineering stage is small. That is, the routing range of the temporary pipe is reduced, and the engineering amount is reduced. (4) Noise can be reduced. That is, environmental protection can be achieved by reducing the boundary noise. (5) The capacity of the temporary air compressor can be reduced. That is, since the flow velocity in the pipe can be increased by drawing the vacuum, the blowing force can be increased. Also, when the blowing force is combined, the specified pressure can be reduced, and the capacity of the temporary air compressor for accumulating pressure can be reduced.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a combined cycle power generation facility according to an embodiment of the present invention at the time of blowing out.

FIG. 2 is a system configuration diagram of a conventional steam power generation facility at the time of blowing out.

FIG. 3 is a system configuration diagram of a conventional combined cycle power generation facility at the time of blowing out.

[Explanation of symbols]

1 ... Exhaust heat recovery boiler, 2 ... Gas turbine, 3 ... High pressure steam turbine, 4 ... Medium pressure steam turbine, 5 ... Low pressure steam turbine, 6,43, 72 ... Generator, 7 ... High pressure drum, 8 ... High pressure superheater , 9,47 ... Reheater, 10, 44 ... High-pressure main steam pipe, 11, 45 ... High-pressure main blocking valve, 12 ... Bypass valve, 1
3 ... Bypass inlet valve, 14 ... Target for blowing out determination, 15 ... Operation valve, 16 ... Temperature reducing device, 17 ... Foreign matter collector, 18 ... Bypass stop valve, 19, 50, 85 ... Condenser, 20 ... Medium Pressure drum, 21 ... Medium pressure superheater, 22 ... Medium pressure main steam pipe, 23 ... Medium pressure main steam stop valve, 24, 46 ... Low temperature reheat pipe, 25, 48 ... High temperature reheat pipe, 26 ... Reheat main block Valve, 27 ... Low-pressure drum, 28 ... Low-pressure superheater, 29 ... Low-pressure main steam pipe, 30 ... Low-pressure main stop valve, 31 ... Make-up water pipe, 32
… Condenser vacuum pump, 33… Temporary air compressor equipment, 34
... Temporary air piping, 35 ... High-pressure evaporator, 36 ... Medium-pressure evaporator, 37 ... Low-pressure evaporator, 41 ... Combustion boiler, 42, 73
... Steam turbine, 49 ... Reheat main shut-off valve, 51 ... Make-up water pipe, 52 ... Temporary steam pipe, 53, 82 ... Blowing-out determination target, 54, 83 ... Temporary operation valve, 5
5, 91 ... Silencer, 56, 87 ... Condenser vacuum pump, 57, 88 ... Condensate pump, 58 ... Low pressure feed water heater,
59 ... Deaerator, 60 ... Boiler feed pump, 61 ... High pressure feed heater, 71 ... Gas turbine, 74 ... Exhaust heat recovery boiler, 75 ... High pressure drum, 76 ... High pressure main steam pipe, 77 ...
High-pressure main block valve, 78 ... Low-pressure drum, 79 ... Low-pressure main steam pipe, 80 ... Low-pressure main block valve, 81, 89 ... Temporary pipe, 84
… Temporary piping, 86… Make-up water pipe, 90… Transfer pump.

Claims (1)

[Claims] 1. A blowing-out facility of a single-shaft combined cycle power plant comprising a power train directly connected to a gas turbine, high / middle / low pressure steam turbines, and a generator on a single shaft, and an exhaust heat recovery boiler, Permanent equipment of the power generation equipment, temporary air compression equipment including temporary piping to the permanent equipment, and temporary piping in which a foreign matter collector for collecting foreign matter from the steam turbine inlet valve upstream to the condenser is arranged, A blowing-out facility comprising the permanent piping of the power generation facility.