JP6777456B2 - Basic equipment for rotary machines - Google Patents

Description

The present invention relates to, for example, the basic equipment of a rotating machine used to install a rotating machine such as a gas turbine or a steam turbine at a predetermined position.

As a thermal power plant, there is a combined cycle power plant that combines a gas turbine and a steam turbine. In this thermal power generation plant, a gas turbine supplies fuel gas to compressed air and burns it to generate electricity by rotating the turbine with combustion gas generated, and at the same time, the high-temperature exhaust gas discharged from the gas turbine is discharged. It is sent to an exhaust heat recovery boiler, steam is generated using the heating unit of this exhaust heat recovery boiler, and the generated steam is used to rotate and drive the turbine to generate electricity.

In a thermal power plant configured in this way, gas turbines and steam turbines are installed, for example, on a foundation formed of reinforced concrete. This foundation is composed of a support pedestal and a pedestal recess, and the rotor of the gas turbine or steam turbine is supported by the support pedestal via bearings at multiple positions, and the gas turbine body or steam turbine body is installed in the pedestal recess. To. On such a basis, the gas turbine rotationally drives the turbine with combustion gas, and the steam turbine rotationally drives the turbine with high-temperature steam, so that radiant heat acts on the surroundings. This radiant heat may act on the support pedestal and the pedestal recess to cause deformation, and if the support pedestal and the pedestal recess are deformed, it becomes difficult to support the gas turbine and the steam turbine at an appropriate position.

As a solution to such a problem, for example, there is one described in Patent Document 1 below. The gas turbine equipment described in Patent Document 1 is provided with a heat insulating material on the upper surface of the top table of the gantry to block heat from the gas turbine.

Japanese Unexamined Patent Publication No. 06-159094

In the gas turbine and the steam turbine, the rotor is supported by the support pedestal via bearings, and the gas turbine main body and the steam turbine main body are installed in the pedestal recess. In the conventional gas turbine equipment described above, a heat insulating material is provided on the upper surface of the top table of the gantry to block heat from the gas turbine. However, the support pedestal has a predetermined height in the vertical direction, and the wall surface along the vertical direction receives radiant heat from the gas turbine. At this time, when the wall surface on one side of the support frame is at room temperature and the wall surface on the other side receives radiant heat and becomes high in temperature, the support pedestal is deformed so as to be tilted to one side due to the difference in thermal expansion between the left and right wall surfaces. There is a problem that the position in the axial direction changes. In particular, in a gas turbine that uses low-calorie fuel, the diameter of the fuel system piping becomes large and the size becomes large, so that the support pedestal becomes even higher in the vertical direction, and the influence of radiant heat becomes large.

The present invention solves the above-mentioned problems, and provides basic equipment for a rotating machine that prevents deformation of the support frame by reducing the influence of radiant heat acting on the support frame and enables stable support of the rotating machine. The purpose is to provide.

The basic equipment of the rotary machine of the present invention for achieving the above object is a support pedestal on which the rotary machine is installed and a first wall surface formed on the rotary machine side along the vertical direction of one of the support pedestals. It is characterized by including a first suppressing member for suppressing the radiant heat from the rotating machine from reaching the first wall surface.

Therefore, since the radiant heat from the rotating machine is suppressed from reaching the first wall surface by the first suppressing member, the temperature rise of the first wall surface is suppressed, and the temperature of the first wall surface and the other wall surface in the support frame is suppressed. The difference is reduced. Therefore, deformation of the support frame due to the difference in thermal expansion between the first wall surface and the other wall surface is suppressed, and the rotating machine can be stably supported.

The basic equipment of the rotary machine of the present invention is characterized in that the first suppressing member is a first heat shield member arranged along the first wall surface and reflecting radiant heat from the rotary machine.

Therefore, since the radiant heat from the rotating machine is suppressed from being reflected by the first heat shield member and reaching the first wall surface, not only the temperature rise of the first wall surface but also the temperature rise of the first heat shield member itself. Is also suppressed, and the temperature difference between the first wall surface and the second wall surface can be reduced.

The basic equipment of the rotary machine of the present invention is characterized in that a heat insulating layer is provided between the first wall surface and the first restraining member.

Therefore, since the heat insulating layer is provided between the first wall surface and the first suppressing member, even if the temperature of the first suppressing member rises due to the radiant heat from the rotating machine, the heat insulating layer causes the first suppressing member to the first wall surface. Heat transfer to is suppressed, and the temperature difference between the first wall surface and the second wall surface can be reduced.

The basic equipment of the rotary machine of the present invention is characterized in that the heat insulating layer is a space portion.

Therefore, by using the heat insulating layer as a space portion, the heat insulating layer can be formed with a simple structure, and heat transfer from the first suppressing member to the first wall surface can be suppressed.

The basic equipment of the rotary machine of the present invention is characterized in that a purge gas supply device for supplying purge gas to the space is provided.

Therefore, the purge gas is supplied to the space between the first wall surface and the first restraining member by the purge gas supply device, and the air in contact with the first wall surface is flowed by the purge gas to cool the first wall surface. , The temperature rise of the first wall surface can be suppressed.

In the basic equipment of the rotary machine of the present invention, the purge gas supply device includes a purge gas pipe arranged downward in the space portion along the horizontal direction, and a plurality of purge gas injection portions provided above the purge gas pipe. It is characterized by having.

Therefore, the purge gas pipe is arranged downward in the space portion along the horizontal direction, and the purge gas is supplied to the space portion between the first wall surface and the first suppression member from the plurality of purge gas injection portions provided above the purge gas pipe. As a result, the air in contact with the first wall surface is flowed upward by the purge gas to cool the first wall surface, and the temperature rise of the first wall surface can be appropriately suppressed.

The basic equipment of the rotary machine of the present invention is provided with a temperature detector that detects the temperature of the first wall surface and a control device that controls the amount of purge gas supplied by the purge gas supply device based on the detection result of the temperature detector. It is characterized by being able to.

Therefore, since the supply amount of purge gas is controlled based on the temperature of the first wall surface, the temperature of the first wall surface is always maintained at an appropriate temperature by adjusting the supply amount of purge gas according to the surrounding environment and the like. Can be done.

In the basic equipment of the rotary machine of the present invention, a deformation amount detector that detects the deformation amount of the support frame and a control device that controls the supply amount of purge gas by the purge gas supply device based on the detection result of the deformation amount detector. Is provided.

Therefore, since the supply amount of purge gas is controlled based on the deformation amount of the support pedestal, the supply amount of purge gas is adjusted so that the deformation amount of the support pedestal is equal to or less than the preset allowable amount. Deformation can be suppressed.

The basic equipment of the rotating machine of the present invention is characterized in that a second suppressing member for suppressing radiant heat from the rotating machine from reaching the floor surface of the support pedestal facing the rotating machine is provided.

Therefore, since the radiant heat from the rotating machine is suppressed from reaching the floor surface of the support pedestal by the second suppressing member, the temperature rise of the floor surface of the support pedestal is suppressed, and the deformation of the floor surface due to thermal expansion is suppressed. It is suppressed and can stably support the rotating machine.

The basic equipment of the rotary machine of the present invention is characterized in that the first restraining member and the second restraining member are continuously arranged.

Therefore, since the first restraining member and the second restraining member are continuously arranged, the first suppressing member and the second restraining member cover the first wall surface and the floor surface of the support frame without a gap. 1 Deformation due to thermal expansion of the wall surface and floor surface is suppressed, and the rotating machine can be stably supported.

According to the basic equipment of the rotating machine of the present invention, the first suppressing member for suppressing the arrival of radiant heat from the rotating machine is provided on the first wall surface of the support pedestal on which the rotating machine is installed. Deformation due to the difference in thermal expansion between the first wall surface and the second wall surface is suppressed, and the rotating machine can be stably supported.

FIG. 1 is a schematic view showing the basic equipment of the rotary machine of the first embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. FIG. 3 is a perspective view showing a heat shield plate. FIG. 4 is a front view showing the heat shield plate. FIG. 5 is a sectional view taken along line VV of FIG. FIG. 6 is a cross-sectional view of the heat shield plate. FIG. 7 is a schematic view showing the installation state of the gas turbine and the steam turbine. FIG. 8 is a schematic configuration diagram showing a gas turbine. FIG. 9 is a schematic configuration diagram showing the basic equipment of the rotary machine of the second embodiment.

Hereinafter, embodiments of the basic equipment of the rotary machine according to the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to this embodiment, and when there are a plurality of embodiments, the present invention also includes a combination of the respective embodiments.

[First Embodiment]
FIG. 7 is a schematic diagram showing an installed state of a gas turbine and a steam turbine, and FIG. 8 is a schematic configuration diagram showing a gas turbine.

The thermal power plant of the first embodiment is a combination of a gas turbine and a steam turbine, and the turbine is rotationally driven by a combustion gas generated by supplying fuel gas to compressed air and burning the gas turbine. Along with generating electricity, the high-temperature exhaust gas discharged from the gas turbine is sent to the exhaust heat recovery boiler, steam is generated using the heating unit of this exhaust heat recovery boiler, and the turbine is generated by the generated steam in the steam turbine. It is driven by rotation to generate power.

As shown in FIG. 7, the foundation 100 is composed of a plurality of support pedestals 101, 102, 103, 104, 105 and a plurality of pedestal recesses 106, 107, 108, 109, 110. The steam turbine 111 is composed of a low pressure turbine 112 and a high medium pressure turbine 113. The low-pressure turbine 112 is installed in the gantry recess 106, the high-medium-pressure turbine 113 is installed in the gantry recess 107, and the common rotating shaft (rotor) 114 is supported by the support portions (bearings) 115, 116, 117. , 103.

Further, the gas turbine 121 is installed in the gantry recess 109, and the casing is supported by the support gantry 104, 105 by the legs 35, 36 described later. In this case, the gas turbine 121 uses a low-calorie gas as a fuel gas, and is applied to, for example, an integrated coal gasification combined cycle (IGCC). Therefore, in the gas turbine 121, the fuel system piping 122 is complicatedly arranged around the combustor, and is installed in the gantry recess 109. Further, in the gas turbine 121, the air intake portion 20 described later is installed in the gantry recess 108, and the intake duct 123 along the horizontal direction bends vertically from below the gantry recesses 109 and 110 to enter the gantry recess 108. It is connected to the air intake unit 20.

As shown in FIG. 8, the gas turbine 121 includes a compressor 11, a combustor 12, and a turbine 13. A generator (not shown) is coaxially connected to the gas turbine 121 so that power can be generated.

The compressor 11 has an air intake unit 20 that takes in air, an inlet guide blade (IGV: Inlet Guide Vane) 22 is arranged in the compressor cabin 21, and a plurality of stationary blades 23 and moving blades 24 are provided. The air extraction chambers 25 are provided alternately in the front-rear direction (the axial direction of the rotor 32, which will be described later). The combustor 12 can burn by supplying fuel to the compressed air compressed by the compressor 11 and igniting it. In the turbine 13, a plurality of stationary blades 27 and moving blades 28 are alternately arranged in the front-rear direction (axial direction of the rotor 32 described later) in the turbine casing 26. An exhaust chamber 30 is arranged on the downstream side of the turbine casing 26 via an exhaust casing 29, and the exhaust chamber 30 has an exhaust diffuser 31 continuous with the turbine 13.

Further, the rotor (rotating shaft) 32 is located so as to penetrate the central portion of the compressor 11, the combustor 12, the turbine 13, and the exhaust chamber 30. The end of the rotor 32 on the compressor 11 side is rotatably supported by the bearing portion 33, while the end on the exhaust chamber 30 side is rotatably supported by the bearing portion 34. Then, the rotor 32 is fixed by stacking a plurality of disks on which the rotor blades 24 are mounted on the compressor 11, and a plurality of disks on which the rotor blades 28 are mounted are stacked and fixed by the turbine 13. A drive shaft of a generator (not shown) is connected to an end portion on the exhaust chamber 30 side.

In this gas turbine 121, the compressor casing 21 of the compressor 11 is supported by the legs 35, the turbine casing 26 of the turbine 13 is supported by the legs 36, and the exhaust chamber 30 is supported by the legs 37. There is.

Therefore, the air taken in from the air intake portion 20 of the compressor 11 passes through the inlet guide blade 22, the plurality of stationary blades 23, and the moving blade 24 and is compressed to become high-temperature and high-pressure compressed air. In the combustor 12, a predetermined fuel is supplied to the compressed air and combusted. Then, the high-temperature and high-pressure combustion gas, which is the working fluid generated by the combustor 12, passes through the plurality of stationary blades 27 and the moving blades 28 constituting the turbine 13 to drive and rotate the rotor 32, and the rotor It drives a generator connected to 32. On the other hand, the combustion gas that drives the turbine 13 is released to the atmosphere as exhaust gas.

The basic equipment of the rotary machine of the first embodiment is a pedestal recess in which the support pedestals 104 and 105 on which the gas turbine 121 as the rotary machine is installed and some constituent members of the gas turbine 121 are installed in the above-mentioned foundation 100. It is applied to 109.

1 is a schematic view showing the basic equipment of the rotary machine of the first embodiment, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a perspective view showing a heat shield plate, and FIG. 4 is a heat shield. A front view showing the plate, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a sectional view of the heat shield plate.

In the basic equipment of the rotary machine of the first embodiment, as shown in FIGS. 1 to 3, the support pedestals 104 and 105 are erected at positions separated by a predetermined distance with the pedestal recesses 109 in between. In the gas turbine 121, the rotation axis of the rotor 32 (see FIG. 8) is arranged along the arrangement direction of the support pedestals 104 and 105, and is installed on the support pedestals 104 and 105 by a plurality of legs 35 and 36. .. At this time, the gas turbine 121 is installed with a part of the compressor 11 and a part of the combustor 12 inserted into the gantry recess 109. Further, the gas turbine 121 is installed in a gantry recess 108 in which an air intake portion 20 is provided with a support pedestal 104 interposed therebetween, and an upper end portion of an intake duct 123 as an outside air flow path along the vertical direction passes through the gantry recess 108. It is connected to the intake unit 20.

The gantry recess 109 is a wall surface (first wall surface) 131 along the vertical direction of the support gantry 104, a wall surface 132 along the vertical direction of the support gantry 105, and a floor surface along the horizontal direction connecting the lower ends of the wall surfaces 131 and 132. It is composed of 133. Although not shown, the gantry recess 109 is also provided with left and right wall surfaces along the vertical direction connecting the side portions of the wall surfaces 131 and 132. Further, the gantry recess 108 faces a wall surface (second wall surface) 134 along the vertical direction of the support gantry 104. In this case, in the support pedestal 104, the wall surface 131 along one vertical direction faces the pedestal recess 109 in which some components of the gas turbine 121 are installed, and the wall surface 134 along the other vertical direction installs the intake duct 123. It faces the pedestal recess 108.

Then, in the present embodiment, a heat shield plate (suppressor member, heat shield member) 50 for suppressing the radiant heat from the gas turbine 121 (particularly the combustor 12) from reaching the wall surface 131 and the floor surface 133 is provided. There is. The heat shield plate 50 is arranged along a first heat shield plate (first suppressing member, first heat shield member) 51 arranged along a wall surface 131 along the vertical direction and a floor surface 133 along the horizontal direction. It is composed of a second heat shield plate (second suppression member, second heat shield member) 52.

The first heat shield plate 51 and the second heat shield plate 52 are connected so as to form an L shape, and the first heat shield plate 51 covers almost the entire vertical direction of the wall surface 131 and is second. The heat shield plate 52 covers the region of the wall surface 131 in the horizontal vertical direction on the floor surface 133. In this case, the first heat shield plate 51 and the second heat shield plate 52 do not necessarily have to be connected so as to form an L shape, but are configured as separate members and arranged so as to be in close contact with each other, or a predetermined gap is provided. You may arrange it in a space.

Since the first heat shield plate 51 suppresses the radiant heat from the gas turbine 121 from reaching the wall surface 131 of the support frame 104, the first heat shield plate 51 has a heat shield function that reflects the radiant heat and does not easily raise the temperature. As shown in FIG. 6, the first heat shield plate 51 is made by stacking a plurality of thin stainless steel plates 61, 62, 63 (three in the present embodiment), and each stainless steel plate 61, A heat insulating layer (air layer) 66, 67 is provided by interposing a plurality of wires 64, 65 at predetermined intervals in the plane direction between 62 and 63. The first heat shield plate 51 is finished so that the surface of the stainless steel plate 61 arranged on the side facing the gas turbine 121 becomes a mirror surface.

The number of stainless steel plates 61, 62, 63 for forming the first heat shield plate 51 is not limited to three, and may be one, two, four or more. Further, not limited to the stainless steel plate, an aluminum steel plate or the like may be used.

Further, returning from FIG. 1 to FIG. 3, the second heat shield plate 52 reflects the radiant heat and raises the temperature in order to suppress the radiant heat from the gas turbine 121 from reaching the floor surface 133 of the gantry recess 109. It has a difficult heat shield function. The second heat shield plate 52 also has almost the same configuration as the first heat shield plate 51.

The first heat shield plate 51 is provided with an air layer (space portion) 53 as a heat insulating layer between the first heat shield plate 51 and the wall surface 131, and the second heat shield plate 52 is provided with an air layer as a heat insulating layer between the first heat shield plate 51 and the floor surface 133. (Space portion) 54 is provided. That is, the first heat shield plate 51 is positioned and supported by the support frame 104 (wall surface 131) by the first support member 55, so that the air layer 53 is secured, and the second heat shield plate 52 is the second support member. By being supported by the gantry recess 109 (floor surface 133) by 56, an air layer 54 is secured between the pedestal recess 109 (floor surface 133) and the floor surface 133.

As shown in FIGS. 3 to 5, the first support member 55 is composed of a plurality of pipe members 71 and a connecting member 72. Each of the plurality of pipe members 71 is arranged along the vertical direction and is arranged at a predetermined interval in the horizontal direction. The plurality of pipe members 71 are connected by a connecting member 72 whose upper end is arranged along the horizontal direction. In this case, the total width of the plurality of pipe members 71 connected by the connecting member 72 is substantially the same as the width of the first heat shield plate 51.

The first heat shield plate 51 is fixed so as to be in close contact with a plurality of pipe members 71 arranged at predetermined intervals. In this case, the first heat shield plate 51 is positioned so that the upper end portion of the pipe member 71 protrudes upward by a predetermined length from the upper end with respect to the plurality of pipe members 71, and the pipe member 71 is positioned from the lower end. The lower end is positioned so as to be positioned upward by a predetermined length. The plurality of pipe members 71 are arranged so as to be in close contact with the wall surface 131 of the support frame 104, and the connecting member 72 is connected to the scaffolding 74 via the connecting piece 73 at each end in the longitudinal direction. Therefore, the first heat shield plate 51 is arranged along the wall surface 131 via the air layer 53.

The second support member 56 is composed of a plurality of concreed blocks. The plurality of concreed blocks are arranged at predetermined intervals in the horizontal direction of the floor surface 133, and the second heat shield plate 52 is arranged and fixed on the plurality of concreed blocks. Therefore, an air layer 54 is secured as a gap between the concreed blocks between the floor surface 133 and the second heat shield plate 52.

A purge gas supply device 80 for supplying purge gas to the air layer 53 provided between the wall surface 131 of the support frame 104 and the first heat shield plate 51 is provided. The purge gas pipe 81 constituting the purge gas supply device 80 is arranged in the lower part of the air layer 53 along the horizontal direction, and is supported by, for example, the lower ends of a plurality of pipe members 71. The purge gas pipe 81 is provided with a plurality of injection holes (purge gas injection portions) 82 at the upper portion. The injection holes 82 are provided so as to be located between the pipe members 71 in the purge gas pipe 81. The purge gas pipe 81 may not be supported by the plurality of pipe members 71, but may be supported by another support member. Further, the purge gas pipe 81 is connected to a purge gas supply source (not shown) via the purge gas supply pipe 83. In the present embodiment, the purge gas is air inside the turbine building, air outside the turbine building (outside air), inert gas (nitrogen or the like), or the like. This purge gas is supplied to the purge gas pipe 81 through the purge gas supply pipe 83 by a pump (not shown), and is ejected from the plurality of ejection holes 82 toward the upper side of the air layer 53.

When the gas turbine 121 is operated, in particular, heat is generated in the combustor 12, so that radiant heat acts in the recess 109 of the gantry, and the radiant heat heats the wall surface 131 and the floor surface 133 of the support gantry 104. On the other hand, in the gas turbine 121, since the outside air (air) is supplied to the air intake portion 20 through the intake duct 123, the inside of the gantry recess 108 is cooled. Then, a temperature difference is generated between the wall surfaces 131 and 134, and the support pedestal 104 is deformed so as to fall toward the pedestal recess 108 due to the difference in thermal expansion.

However, in the present embodiment, the first heat shield plate 51 is arranged on the wall surface 131, and the second heat shield plate 52 is arranged on the floor surface 133. Therefore, the radiant heat from the gas turbine 121 is suppressed from reaching the wall surface 131 by the first heat shield plate 51, and is suppressed from reaching the floor surface 133 by the second heat shield plate 52. Then, the temperature rise of the wall surface 131 and the floor surface 133 is suppressed, the collapse of the support pedestal 104 is suppressed, and the gas turbine 121 is stably supported by the support pedestals 104 and 105.

As described above, in the basic equipment of the rotary machine of the first embodiment, the support pedestals 104 and 105 on which the gas turbine 121 is installed and the support gantry 104 are formed on the gas turbine 121 side along one of the vertical directions. A wall surface 131 and a first heat shield plate 51 for suppressing the radiant heat from the gas turbine 121 from reaching the wall surface 131 are provided.

Therefore, since the radiant heat from the gas turbine 121 is suppressed from reaching the wall surface 131 by the first heat shield plate 51, the temperature rise of the wall surface 131 is suppressed, and the temperature difference between the wall surface 131 and the wall surface 134 is reduced. To. Therefore, deformation of the support pedestal 104 due to the difference in thermal expansion between the wall surface 131 and the wall surface 134 is suppressed, the support pedestal 104 is suppressed from falling, and the gas turbine 121 can be stably supported.

In the basic equipment of the rotary machine of the first embodiment, the first heat shield plate 51 is arranged along the wall surface 131 to reflect the radiant heat from the gas turbine 121. Therefore, not only the temperature rise of the wall surface 131 but also the temperature rise of the first heat shield plate 51 itself is suppressed, and the temperature difference between the wall surface 131 and the wall surface 134 can be appropriately reduced.

In the basic equipment of the rotary machine of the first embodiment, an air layer 53 is provided between the wall surface 131 and the first heat shield plate 51. Therefore, even if the temperature of the first heat shield plate 51 rises due to the radiant heat from the gas turbine 121, the air layer 53 suppresses the heat transfer from the first heat shield plate 51 to the wall surface 131, and the wall surface 131 and the wall surface 134 The temperature difference can be reduced. Moreover, the heat insulating layer can be formed with a simple structure.

The basic equipment of the rotary machine of the first embodiment is provided with a purge gas supply device 80 that supplies purge gas to the air layer 53. Therefore, the purge gas supply device 80 supplies the purge gas to the air layer 53 between the wall surface 131 and the first heat shield plate 51, and the air in contact with the wall surface 131 is flowed by the purge gas to cool the wall surface 131. Therefore, the temperature rise of the wall surface 131 can be suppressed.

In the basic equipment of the rotary machine of the first embodiment, the purge gas supply device 80 includes a purge gas pipe 81 arranged downward in the air layer 53 along the horizontal direction, and a plurality of injections provided above the purge gas pipe 81. A hole 82 is provided. Therefore, the purge gas pipe 81 is arranged below the air layer 53 along the horizontal direction, and the air between the wall surface 131 and the first heat shield plate 51 is provided through the plurality of injection holes 82 provided in the upper part of the purge gas pipe 81. The purge gas is supplied to the layer 53, and the air in contact with the wall surface 131 is flowed upward by the purge gas to cool the wall surface 131, so that the temperature rise of the wall surface 131 can be appropriately suppressed.

The basic equipment of the rotary machine of the first embodiment is provided with a second heat shield plate 52 that prevents radiant heat from the gas turbine 121 from reaching the floor surface 133 of the gantry recess 109. Therefore, the temperature rise of the floor surface 133 of the gantry recess 109 is suppressed, the downward warp deformation of the floor surface 133 due to thermal expansion is suppressed, and the gas turbine 121 can be stably supported.

In the basic equipment of the rotary machine of the first embodiment, the first heat shield plate 51 and the second heat shield plate 52 are continuously arranged. Therefore, the wall surface 131 and the floor surface 133 are covered without gaps by the first heat shield plate 51 and the second heat shield plate 52, the deformation of the wall surface 131 and the floor surface 133 due to thermal expansion is suppressed, and the gas turbine 121 is formed. Can be stably supported.

[Second Embodiment]
FIG. 9 is a schematic configuration diagram showing the basic equipment of the rotary machine of the second embodiment. Members having the same functions as those in the above-described embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In the second embodiment, as shown in FIG. 9, the gantry recess 109 has a wall surface 131 along the vertical direction of the support gantry 104, a wall surface 132 along the vertical direction of the support gantry 105, and lower ends of the respective wall surfaces 131 and 132. It is composed of a floor surface 133 along the horizontal direction to be connected. The support frame 104 is provided with the wall surface 134 of the frame recess 108 on the opposite side of the wall surface 131.

A heat shield plate 50 is provided to prevent the radiant heat from the gas turbine 121 from reaching the wall surface 131 and the floor surface 133. That is, the first heat shield plate 51 is arranged along the wall surface 131 along the vertical direction, and the second heat shield plate 52 is arranged along the floor surface 133 along the horizontal direction. Since the first heat shield plate 51 and the second heat shield plate 52 are the same as those in the first embodiment, detailed description thereof will be omitted.

The support pedestal 104 is provided with a purge gas supply device 80 that supplies purge gas to the air layer 53 provided between the wall surface 131 and the first heat shield plate 51. The purge gas pipe 81 constituting the purge gas supply device 80 is arranged in the lower part of the air layer 53 along the horizontal direction, and a plurality of injection holes 82 are provided in the upper part. The purge gas supply pipe 83 is connected to the purge gas pipe 81, and the purge gas supply pipe 83 is provided with an on-off valve (flow rate adjusting valve) 84 and a supply pump 85.

The support pedestal 104 includes a first temperature detector 91 that detects the temperature of the wall surface 131 on the pedestal recess 109 side on which a part of the gas turbine 121 is installed, and a pedestal recess 108 side on which a part of the intake duct 123 is installed. A second temperature detector 92 for detecting the temperature of the wall surface 134 is provided. Each of the temperature detectors 91 and 92 is connected to the control device 93, and the detected temperature of the wall surface 131 and the temperature of the wall surface 134 are input. The control device 93 controls the supply amount of purge gas by the purge gas supply device 80 based on the temperature of the wall surface 131 and the temperature of the wall surface 134. Specifically, when the temperature difference between the temperature of the wall surface 131 and the temperature of the wall surface 134 exceeds a preset upper limit temperature allowable value, the control device 93 increases the opening degree of the on-off valve 84 or supplies the pump. The supply amount of purge gas is increased by increasing the rotation speed of 85, and when the temperature difference falls below the preset lower limit temperature tolerance, the opening degree of the on-off valve 84 is reduced or the rotation of the supply pump 85 is performed. By decreasing the number, the supply amount of purge gas is reduced.

The temperature inside the turbine building changes depending on the season and time. Further, when the purge gas is outside air, the temperature of the purge gas also changes depending on the season and time. Therefore, the control device 93 grasps the temperature difference between the temperature of the wall surface 131 and the temperature of the wall surface 134, and adjusts the supply amount of the purge gas for cooling the wall surface 131 when the temperature inside the turbine building or the temperature of the purge gas changes. As a result, the temperature difference between the temperature of the wall surface 131 and the temperature of the wall surface 134 is set within the temperature allowable range.

Here, the amount of deformation of the support pedestal 104 may be detected without detecting the temperature of the wall surface 131 and the temperature of the wall surface 134. The support pedestal 104 includes a first elongation amount detector 94 that detects an axial elongation amount (deformation amount) of the rotating shaft 114 in the support portion 115 of the steam turbine 111, and a rotating shaft 114 of the rotating shaft 114 in the support portion 116 of the steam turbine 111. A second elongation amount detector 95 for detecting the elongation amount (deformation amount) in the axial direction is provided. Each of the elongation amount detectors 94 and 95 is connected to the control device 93, and the elongation amount of the detected support portion 115 and the elongation amount of the support portion 116 are input. The control device 93 controls the supply amount of purge gas by the purge gas supply device 80 based on the elongation amount of the support portion 115 and the elongation amount of the support portion 116. Specifically, when the elongation amount of the support portion 115 and the elongation amount of the support portion 116 exceed the preset upper limit elongation amount allowable value, the control device 93 increases the supply amount of the purge gas by the purge gas supply device 80 and extends. When the amount is less than the preset lower limit elongation allowance value, the purge gas supply device 80 reduces the supply amount of the purge gas.

Here, although the amount of axial elongation of the rotating shaft 114 in the support portions 115 and 116 of the steam turbine 111 is detected, the amount of deformation (tilt amount) of the support frame 104 may be detected by the deformation amount detector. ..

As described above, in the basic equipment of the rotary machine of the second embodiment, the first temperature detector 91 for detecting the temperature of the wall surface 131, the second temperature detector 92 for detecting the temperature of the wall surface 134, and each temperature detector 91 , 92 is provided with a control device 93 for controlling the supply amount of purge gas by the purge gas supply device 80 based on the detection results of 92. Therefore, the temperature of the wall surface 131 can always be maintained at an appropriate temperature by adjusting the supply amount of the purge gas according to the surrounding environment and the like.

In the basic equipment of the rotary machine of the second embodiment, the elongation amount detectors 94 and 95 for detecting the axial elongation amount of the rotary shaft 114 in the support portions 115 and 116 of the steam turbine 111 and the elongation amount detectors 94 and 95 A control device 93 for controlling the supply amount of the purge gas by the purge gas supply device 80 is provided based on the detection result of the above. By adjusting the supply amount of purge gas so that the amount of deformation of the support pedestal 104 is equal to or less than the allowable amount, the deformation of the support pedestal 104 can be suppressed.

In the above-described embodiment, the suppressing member is composed of the heat shield plates 50, 51, 52, but the present invention is not limited to this configuration. The suppressing member may have any shape as long as it suppresses the arrival of radiant heat.

Further, in the above-described embodiment, the purge gas supply device 80 is provided in the air layer 53, but a mere blower may be provided in the air layer 53. Even if the purge gas supply device 80 and the blower are not provided, the air in the air layer 53 becomes an upward flow due to natural convection, and the wall surface 131 can be cooled.

Further, in the above-described embodiment, the rotary machine has been described as the gas turbine 121, but the present invention is not limited to this. For example, the rotating machine may be a steam turbine 111, and the first restraining member may be provided on the wall surface of the support frame 103 on the side of the frame recess 107. Further, the present invention is not limited to the gas turbine 121 and the steam turbine 111, and may be applied to other rotating machines that generate heat during operation.

11 Compressor 12 Combustor 13 Turbine 20 Air intake part 35, 36, 37 Leg part 50 Heat shield plate (suppressor member, heat shield member)
51 First heat shield plate (first suppression member, first heat shield member)
52 Second heat shield plate (second suppression member, second heat shield member)
53,54 Air layer (space, heat insulation layer)
55 1st support member 56 2nd support member 61,62,63 Stainless steel plate 64,65 Wire 66,67 Insulation layer (air layer)
71 Pipe member 72 Connecting member 80 Purge gas supply device 81 Purge gas piping 82 Injection hole (purge gas injection part)
91 1st temperature detector 92 2nd temperature detector 93 Control device 94 1st elongation amount detector (deformation amount detector)
95 Second elongation amount detector (deformation amount detector)
100 Foundation 101, 102, 103, 104, 105 Support stand 106, 107, 108, 109, 110 Stand recess 111 Steam turbine 114 Rotating shaft 121 Gas turbine 122 Fuel system piping 123 Intake duct (outside air flow path)
131 wall surface (first wall surface)
132 Wall surface 133 Floor surface 134 Wall surface (second wall surface)

Claims (9)

A support stand on which a rotating machine is installed and
A first wall surface formed on the rotating machine side along one vertical direction of the support frame, and
A first suppressing member that suppresses the radiant heat from the rotating machine from reaching the first wall surface,
Bei to give a,
The first suppressing member is a heat shield member that reflects radiant heat from the rotating machine, and is formed by stacking a plurality of steel plates.
The basic equipment of rotating machines, which is characterized by this. The basic equipment of a rotary machine according to claim 1 , wherein a heat insulating layer is provided between the first wall surface and the first restraining member. The basic equipment of a rotary machine according to claim 2 , wherein the heat insulating layer is a space portion. The basic equipment of a rotary machine according to claim 3 , wherein a purge gas supply device for supplying purge gas is provided in the space. The purge gas supply apparatus, according to claim 4, characterized in that it comprises a purge gas pipe which are arranged along the horizontal direction downwards, and a plurality of purge gas injection unit provided in the upper portion of the purge gas pipe in said space The basic equipment of the rotating machine described in. 4. The fourth aspect of the present invention is characterized in that a temperature detector for detecting the temperature of the first wall surface and a control device for controlling the supply amount of the purge gas by the purge gas supply device based on the detection result of the temperature detector are provided. The basic equipment of the rotary machine according to claim 5 . The claim is characterized in that a deformation amount detector for detecting the deformation amount of the support frame and a control device for controlling the supply amount of purge gas by the purge gas supply device based on the detection result of the deformation amount detector are provided. 4 or the basic equipment of the rotary machine according to claim 5 . Any one of claims 1 to 7, wherein a second suppressing member is provided to prevent radiant heat from the rotating machine from reaching the floor surface of the support pedestal facing the rotating machine. The basic equipment of the rotating machine described in. The basic equipment of a rotary machine according to claim 8 , wherein the first restraining member and the second restraining member are continuously arranged.

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