JP2012202390A - Turbine facility, and solar thermal power generation facility equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turbine facility equipped with gas turbines driven by using solar heat and more effectively using the thermal energy.SOLUTION: The turbine facility includes: a first heat receiving pipe assembly 45 having a plurality of heat receiving pipes 47, in which the heat receiving pipes are irradiated with sunlight and air in the heat receiving pipes is heated; a high-pressure gas turbine 32 driven by the air heated in the first heat receiving pipe assembly; a second heat receiving pipe assembly 55 having a plurality of heat receiving pipes 57 for flowing of the air exhausted from the high-pressure gas turbine, in which the heat receiving pipes are irradiated with sunlight and air in the heat receiving pipes is heated; and a low-pressure gas turbine 33 driven by the air heated in the second heat receiving pipe assembly 55.

Description

  The present invention relates to a turbine facility including a gas turbine that converts thermal energy from sunlight into mechanical energy, and a solar power generation facility including the turbine facility.

  As a solar thermal power generation facility, for example, there is one described in Patent Document 1 below.

  This solar thermal power generation facility includes a heat receiver that is irradiated with sunlight and heated inside air, and a gas turbine that is driven by the air heated by the heat receiver.

JP 2011-32960 A

  In a solar thermal power generation facility equipped with a gas turbine, it is desired to use thermal energy more effectively than a general power generation facility from the viewpoint of efficiently using natural energy.

  Then, an object of this invention is to provide the turbine equipment which can utilize the thermal energy by sunlight more effectively, and a solar thermal power generation equipment provided with this.

The turbine equipment according to the invention for achieving the above object is as follows:
A plurality of heat receiving pipes, which are driven by the first heat receiving pipe assembly in which the heat receiving pipe is irradiated with sunlight and the fluid in the heat receiving pipe is heated, and the fluid heated by the first heat receiving pipe assembly; A first gas turbine and a plurality of heat receiving pipes through which the fluid exhausted from the first gas turbine flows, wherein the heat receiving pipe is irradiated with sunlight to heat the fluid in the heat receiving pipe; A heat pipe assembly and a second gas turbine driven by the fluid heated by the second heat receiving pipe assembly are provided.

  In the turbine equipment, the first gas turbine is driven by the fluid heated by the first heat receiving pipe assembly, and the fluid exhausted from the first gas turbine is not immediately exhausted, but is heated again by the second heat receiving pipe assembly. And since the 2nd gas turbine is driven with this fluid, thermal energy can be used effectively.

  Here, in the turbine facility, each of the first heat receiving pipe assembly and the second heat receiving pipe assembly is a ring-shaped lower header pipe into which the fluid flows, and a ring disposed above the lower header pipe. The upper header pipe, which extends in the vertical direction, connects the lower header pipe and the upper header pipe, the fluid flows from the lower header pipe, and the fluid is heated by being irradiated with sunlight. A plurality of heat receiving pipes that send the fluid to the upper header pipe. In this case, the lower header pipe and the upper header pipe of the first heat receiving pipe assembly form a ring shape around a virtual axis extending in the vertical direction with a first diameter, and the lower header pipe of the second heat receiving pipe assembly. The upper header pipe preferably has a second diameter larger than the first diameter and has a ring shape centered on the virtual axis.

  In the turbine equipment, a plurality of heliostats that irradiate sunlight to the first heat receiving pipe assembly and the second heat receiving pipe assembly are arranged around the virtual axis, so that the first heat receiving pipe assembly and the second heat receiving pipe assembly are sunlit. Light can be irradiated efficiently. Furthermore, since the first heat receiving pipe assembly and the second heat receiving pipe assembly are arranged on the virtual axis extending in the vertical direction, the installation area of the structure supporting each heat receiving pipe assembly can be reduced, and the area around the virtual axis can be reduced. Heliostat installation density can be increased.

  The turbine facility further includes a first heat receiving casing that covers the first heat receiving pipe assembly, and a second heat receiving casing that covers the second heat receiving pipe assembly, the first heat receiving pipe assembly and the first heat receiving pipe. A first heat receiver, and a second heat receiver having the second heat receiving pipe assembly and the second heat receiver casing, wherein the first heat receiver The first heat receiver casing is disposed above the two heat receivers, and the first heat receiver casing has an opening centered on the virtual axis so that sunlight from below is irradiated to the plurality of heat receiver tubes of the first heat receiver. The second heat receiver casing is formed with an opening around the imaginary axis so that sunlight from below is irradiated to the plurality of heat receiving tubes of the second heat receiving tube assembly. As well as The virtual axis is centered so that a part of sunlight entering from the opening enters the first heat receiver casing through the opening of the first heat receiver casing and irradiates the plurality of heat receiving tubes of the first heat receiver. The opening may be formed also on the upper side.

  In the gas turbine facility, although the first heat receiving pipe assembly and the second heat receiving pipe assembly are arranged on a virtual axis extending in the vertical direction, positions in the vertical direction (direction along the virtual axis) are different from each other. By setting some of the heliostats to heliostats that irradiate sunlight only to the first heat receiving pipe assembly and the other part to be heliostats that irradiate sunlight only to the second heat receiving pipe assembly. The amount of sunlight applied to the first heat receiving tube assembly and the amount of sunlight applied to the second heat receiving tube assembly can be individually controlled. That is, in the gas turbine facility, it is possible to control each of the heat amount of the fluid sent to the first gas turbine and the heat amount of the fluid sent to the second gas turbine.

  The turbine facility further includes a casing that covers the first heat receiving pipe assembly and the second heat receiving pipe assembly, the first heat receiving pipe assembly, the second heat receiving pipe assembly, and the casing. The first heat receiving pipe assembly is disposed on the inner peripheral side which is the virtual axis side of the second heat receiving pipe assembly, and the plurality of heat receiving pipes of the first heat receiving pipe assembly are the second heat receiving pipes. The circumferential position around the virtual axis is different from the plurality of the heat receiving tubes of the assembly, and sunlight from below is applied to the casing from the plurality of the heat receiving tubes of the first heat receiving tube assembly. And the opening centering on the virtual axis may be formed on the lower side so that the plurality of heat receiving tubes of the second heat receiving tube assembly are irradiated.

  In the turbine equipment, the heat receiver having the first heat receiving pipe assembly and the second heat receiving pipe assembly can be downsized, and the structure supporting the heat receiving apparatus can be downsized.

  The turbine facility further includes a casing that covers the first heat receiving pipe assembly and the second heat receiving pipe assembly, and the first heat receiving pipe assembly, the second heat receiving pipe assembly, and the casing form a heat receiver. Also good.

  In the turbine equipment, the heat receiver having the first heat receiving pipe assembly and the second heat receiving pipe assembly can be downsized, and the structure supporting the heat receiving apparatus can be downsized.

  The turbine facility further includes a steam generator that generates water by heating water with the fluid exhausted from the second gas turbine, and a steam turbine that is driven by the steam generated by the steam generator. It may be.

  In the gas turbine equipment, since the heat of the fluid exhausted from the second gas turbine is further used for driving the steam turbine, the thermal energy can be further effectively used.

The solar thermal power generation facility according to the invention for achieving the above object is as follows:
A first heliostat that includes the turbine equipment, a reflecting mirror, reflects the sunlight by the reflecting mirror, and irradiates the heat receiving pipe of the first heat receiving pipe assembly of the turbine equipment; A second heliostat that reflects the sunlight with the reflector and irradiates the heat receiving tube of the second heat receiving tube assembly of the turbine facility with sunlight, the first gas turbine of the turbine facility, and the A generator that generates electric power by driving at least one of the second gas turbines is provided.

  Since the said solar power generation equipment is equipped with the said turbine equipment, it can utilize thermal energy effectively and can raise power generation efficiency.

  According to the present invention, the first gas turbine is driven by the fluid heated by the first heat receiving pipe assembly, and the fluid exhausted from the first gas turbine is not immediately exhausted, but again by the second heat receiving pipe assembly. Since it heats and the 2nd gas turbine is driven with this fluid, heat energy can be used effectively.

It is a side view of the solar thermal power generation equipment in the first embodiment according to the present invention. It is a top view of solar thermal power generation equipment in a first embodiment concerning the present invention. It is explanatory drawing which shows the structure of the tower facility in 1st embodiment which concerns on this invention. It is the IV-IV sectional view taken on the line in FIG. It is a perspective view of the 1st and 2nd heat receiving pipe assembly in 1st embodiment which concerns on this invention. It is explanatory drawing which shows the structure of the tower facility in 2nd embodiment which concerns on this invention. It is the VII-VII sectional view taken on the line in FIG. It is explanatory drawing which shows the structure of the tower facility in the modification of embodiment which concerns on this invention. It is a systematic diagram of solar thermal power generation equipment in a modification of the embodiment according to the present invention.

  Hereinafter, embodiments of a solar thermal power generation facility according to the present invention will be described in detail with reference to the drawings.

"First embodiment"
First, with reference to FIGS. 1-5, 1st embodiment of a solar thermal power generation installation is described.

  As shown in FIG. 1, the solar thermal power generation facility of the present embodiment reflects sunlight by a tower facility 20 having a first heat receiver 40 and a second heat receiver 50 that are irradiated with sunlight, and a reflecting mirror 11. And a plurality of heliostats 10 for irradiating the heat receivers 40 and 50 with sunlight.

  The heliostat 10 includes a reflecting mirror 11 that reflects sunlight, a support leg 12 that supports the reflecting mirror 11, and a drive controller 13 that directs the reflecting mirror 11 in a target direction. As shown in FIG. 2, a plurality of heliostats 10 are scattered in a ring-shaped region around the tower facility 20. In other words, a plurality of heliostats 10 are arranged 360 ° in the circumferential direction around the tower facility 20, and a plurality of heliostats 10 are also arranged in the perspective direction with the tower facility 20 as a reference.

  As shown in FIG. 3, the tower facility 20 is driven by the first heat receiver 40 described above, the compressor 31 that supplies compressed air to the first heat receiver 40, and the air heated by the first heat receiver 40. A high-pressure gas turbine (first gas turbine) 32, the above-described second heat receiver 50 that heats the air exhausted from the high-pressure gas turbine 32, and a low-pressure gas turbine that is driven by the air heated by the second heat receiver 50 ( (Second gas turbine) 33, a generator 34 that generates electric power by driving the high-pressure gas turbine 32 and the low-pressure gas turbine 33, and heat between the air compressed by the compressor 31 and the air exhausted from the low-pressure gas turbine 33 A regenerative heat exchanger 35 that performs exchange, a storage 25 in which these are stored, and a tower 21 on which these are mounted are provided.

  The tower 21 includes four support columns 22 extending in the vertical direction and a plurality of beams 23 that connect the four support columns 22 to each other. As shown in FIG. 2, the heliostat 10 is not disposed on the diagonal line of the four support columns 22. This is to avoid the column 22 of the tower 21 being present on the optical path of sunlight reflected by the reflecting mirror 11 of the heliostat 10 and directed to the first heat receiver 40 and the second heat receiver 50. Further, the plurality of beams 23 of the tower 21 are also arranged so as not to be present on the light path of sunlight reflected by the reflecting mirror 11 of the heliostat 10 and directed to the first heat receiver 40 and the second heat receiver 50.

  The storage 25 has a lower storage chamber 26 and an upper storage chamber 28 formed therein. A circular opening 27 for taking sunlight into the lower storage chamber 26 is formed below the lower storage chamber 26. The openings 27 are formed to be large enough to guide sunlight from the respective biostats 10 into the lower storage chamber 26. A first heat receiver 40 and a second heat receiver 50 are stored in the lower storage chamber 26. The first heat receiver 40 is disposed on a virtual axis A that extends in the vertical direction through the center of the circular opening 27 and is disposed on the upper side in the lower storage chamber 26, and the second heat receiver 50 is disposed on the virtual axis A. In this case, the lower storage chamber 26 is disposed on the lower side. The upper storage chamber 28 stores a compressor 31, a high-pressure gas turbine 32, a low-pressure gas turbine 33, a generator 34, and a regenerative heat exchanger 35.

  The compressor 31 and the first heat receiver 40 are connected via a regenerative heat exchanger 35 by a compressed air pipe 36 that guides the air compressed by the compressor 31 to the first heat receiver 40. The first heat receiver 40 and the high pressure gas turbine 32 are connected by a first heated air pipe 37 a that sends the air heated by the first heat receiver 40 to the high pressure gas turbine 32. The high pressure gas turbine 32 and the second heat receiver 50 are connected by a first exhaust pipe 38 a that supplies air exhausted from the high pressure gas turbine 32 to the second heat receiver 50. The second heat receiver 50 and the low pressure gas turbine 33 are connected by a second heated air pipe 37 b that sends the air heated by the second heat receiver 50 to the low pressure gas turbine 33. The low pressure gas turbine 33 and the regenerative heat exchanger 35 are connected by a second exhaust pipe 38 b that sends the air exhausted from the low pressure gas turbine 33 to the regenerative heat exchanger 35.

  The first heat receiver 40 and the second heat receiver 50 both have cylindrical casings 41 and 51 centered on the virtual axis A described above, and heat receiving pipe assemblies 45 and 55 accommodated in the casings 41 and 51. And have.

  The first heat receiver casing 41 includes a side peripheral wall plate 42 and a top plate 43, and a circular opening 44 is formed on the lower side about the virtual axis A. The second heat receiver casing 51 also has a side peripheral wall plate 52 and a top plate 53, and a circular opening 54 is formed on the lower side with the virtual axis A as the center. Furthermore, on the top plate 53 of the second heat receiver casing 51, part of the sunlight that has entered the second heat receiver casing 51 passes through the second heat receiver casing 51 and is above the second heat receiver 40. A circular opening 54b is formed with the virtual axis A as the center so that the first heat receiving pipe assembly 45 of the first heat receiver 40 disposed in the center is irradiated. Each of the openings 44, 54, 54 b is formed in a size capable of guiding sunlight from each heliostat 10 to the upper space from the position of each opening 44, 54, 54 b in the vertical direction.

  A heat insulating material is applied to the inner surfaces of the first heat receiver casing 41 and the second heat receiver casing 51 in order to suppress radiation outside the heat energy.

  The first heat receiver casing 41 is suspended from the partition wall 29 by a hook 99 a fixed to the partition wall 29 that partitions the lower storage chamber 26 and the upper storage chamber 28 of the storage 25. The lower end of the hook 99 a passes through the top plate 43 of the first heat receiver casing 41 and is attached to the first heat receiving pipe assembly 45. That is, not only the first heat receiver casing 41 but also the first heat receiving pipe assembly 45 is suspended from the partition wall 29 by the hook 99a. Further, the second heat receiver casing 51 and the second heat receiving pipe assembly 55 are also suspended from the partition wall 29 by hooks 99 b fixed to the partition wall 29 of the storage 25.

  As shown in FIGS. 3 to 5, each of the first heat receiving pipe assembly 45 and the second heat receiving pipe assembly 55 includes ring-shaped lower header pipes 46 a and 56 a and ring-shaped upper header pipes 46 b and 56 b. A plurality of heat receiving pipes 47, 57 extending in the vertical direction and connecting the lower header pipes 46a, 56a and the upper header pipes 46b, 56b; inlet pipes 48, 58 (FIG. 5) for sending air to the lower header pipe 46a; Outlet pipes 49 and 59 (FIG. 5) for sending air from the header pipe 46b to the gas turbines 32 and 33.

  The lower header pipe 46a and the upper header pipe 46b of the first heat receiving pipe assembly 45 both form a ring shape with the first diameter as the center about the virtual axis A, and the lower header pipe 56a and the upper part of the second heat receiving pipe assembly 55. Each of the header pipes 56b has a second diameter larger than the first diameter and forms a ring shape around the virtual axis A.

  The plurality of heat receiving pipes 47 of the first heat receiving pipe assembly 45 are arranged at predetermined intervals in the circumferential direction of the ring-shaped lower header pipe 46a and the upper header pipe 46b. The sunlight from the heliostat 10 is basically applied to the heat receiving tube 47, and the heat receiving tube 47 is heated to a high temperature. As described above, since the heat receiving pipe 47 is at a high temperature, it extends in the vertical direction as described above so that bending stress due to its own weight is not applied.

  The first heat receiver casing 41 is gradually reduced in diameter as the lower portion thereof is directed downward, and the lower header pipe 46a is located on the outer peripheral side of the lower portion of the first heat receiver casing 41, and the first heat receiver casing 41 The container casing 41 is not housed. A plurality of inlet pipes 48 (FIG. 5) are connected to the outer peripheral side of the lower header pipe 46a. The plurality of inlet pipes 48 are connected to a compressed air pipe 36 (FIG. 3) extending from the compressor 31. A plurality of outlet pipes 49 are connected to the inner peripheral side of the upper header pipe 46b so as to connect the opposing portions of the ring-shaped upper header pipe 46b. A first heated air pipe 37 a (FIG. 3) for sending the air heated by the first heat receiving pipe assembly 45 to the high pressure gas turbine 32 is connected to a portion where the plurality of outlet pipes 49 intersect with each other.

  The plurality of heat receiving pipes 57 of the second heat receiving pipe assembly 55 are spaced apart from each other at a predetermined interval in the circumferential direction of the ring-shaped lower header pipe 56a and the upper header pipe 56b, similarly to the plurality of heat receiving pipes 47 of the first heat receiving pipe assembly 45. It is arranged with a gap. The sunlight from the heliostat 10 is basically applied to the heat receiving tube 57.

  The diameter of the second heat receiver casing 51 is gradually reduced as the lower part thereof is directed downward, and the lower header pipe 56a is located on the outer peripheral side of the lower part of the second heat receiver casing 51, The container casing 51 is not housed. A plurality of inlet pipes 58 (FIG. 5) are connected to the outer peripheral side of the lower header pipe 56a. The plurality of inlet pipes 58 are connected to a first exhaust pipe 38 a (FIG. 3) extending from the high pressure gas turbine 32. In addition, a plurality of outlet pipes 59 are connected to the inner peripheral side of the upper header pipe 56b so as to connect opposing portions of the ring-shaped upper header pipe 56b. A second heated air pipe 37 b (FIG. 3) for sending the air heated by the second heat receiving pipe assembly 55 to the low pressure gas turbine 33 is connected to a portion where the plurality of outlet pipes 59 intersect each other.

  As described above, the first heat receiving pipe assembly 45 has a first diameter smaller than the second diameter of the second heat receiving pipe assembly 45, and the volume of the internal space of the first heat receiving pipe assembly 45 is equal to that of the second heat receiving pipe assembly 55. It is smaller than the volume of the internal space. This is because the internal pressure of the first heat receiving pipe assembly 45 is higher than the internal pressure of the second heat receiving pipe assembly 55 arranged on the downstream side of the first heat receiving pipe assembly 45. This is because the air density is higher than the air density in the second heat receiving pipe assembly 55.

  In addition, the gas turbine equipment in this embodiment is comprised including the compressor 31, the high pressure gas turbine 32, the low pressure gas turbine 33, the regenerative heat exchanger 35, the first heat receiver 40, and the second heat receiver 50. .

  Next, the operation of the solar thermal power generation facility described above will be described.

  The compressor 31 takes in external air, compresses it, and sends it to the first heat receiving pipe assembly 45 through the regenerative heat exchanger 35 and the compressed air pipe 36. The compressed air from the compressor 31 flows from the inlet pipe 48 of the first heat receiving pipe assembly 45 into the plurality of heat receiving pipes 47 through the lower header pipe 46a.

  As shown in FIGS. 1 and 2, the plurality of heat receiving tubes 47 of the first heat receiving tube assembly 45 mainly include the suns from a plurality of heliostats 10 a relatively close to the tower facility 20 among the plurality of heliostats 10. Light is irradiated. For this reason, the air flowing through the plurality of heat receiving tubes 47 of the first heat receiving tube assembly 45 is heated. The air heated in the plurality of heat receiving pipes 47 is sent to the high pressure gas turbine 32 through the upper header pipe 46b and the outlet pipe 49 of the first heat receiving pipe assembly 45, and further through the first heated air pipe 37a. The turbine 32 is driven.

  The air exhausted from the high-pressure gas turbine 32 is sent to the second heat receiving pipe assembly 55 via the first exhaust pipe 38a. Air from the high pressure gas turbine 32 flows into the plurality of heat receiving pipes 57 from the inlet pipe 58 of the second heat receiving pipe assembly 55 through the lower header pipe 56a.

  As shown in FIGS. 1 and 2, the plurality of heat receiving tubes 57 of the second heat receiving tube assembly 55 mainly include the sun from a plurality of heliostats 10 b that are relatively far from the tower facility 20 among the plurality of heliostats 10. Light is irradiated. For this reason, the air flowing through the plurality of heat receiving tubes 57 of the second heat receiving tube assembly 55 is heated. In other words, in the present embodiment, among the plurality of heliostats 10, a plurality of heliostats 10a that are relatively close to the tower facility 20 form a first heliostat that irradiates the first heat receiver 40 with sunlight. A plurality of heliostats 10 b that are relatively far from 20 form a second heliostat that irradiates the second heat receiver 50 with sunlight. Of the plurality of heliostats 10, the heliostat 10 disposed in the middle portion in the perspective direction with respect to the tower facility 20 constitutes only one of the first heliostat and the second heliostat. Alternatively, both the first heliostat and the second heliostat may be used.

  The air heated in the plurality of heat receiving pipes 57 of the second heat receiving pipe assembly 55 passes through the upper header pipe 56b and the outlet pipe 59 of the second heat receiving pipe assembly 55, and further passes through the second heating air pipe 37b, and the low pressure gas turbine. Then, the low pressure gas turbine 33 is driven.

  The generator 34 generates power by driving the high-pressure gas turbine 32 and the low-pressure gas turbine 33. Piping

  The air exhausted from the low-pressure gas turbine 33 is exhausted to the outside through the second exhaust pipe 38b and the regenerative heat exchanger 35. In the process of passing through the regenerative heat exchanger 35, the air exhausted from the low-pressure gas turbine 33 exchanges heat with the compressed air sent from the compressor 31 to the first heat receiver 40, thereby heating the compressed air.

  As described above, in the present embodiment, the high pressure gas turbine 32 is driven by the air heated by the first heat receiving pipe assembly 45, and the air exhausted from the high pressure gas turbine 32 is not immediately exhausted, Since the low-pressure gas turbine 33 is driven by the air heated by the two heat receiving pipe assemblies 55, the heat energy can be used effectively.

  In the present embodiment, since the first heat receiver 40 and the second heat receiver 50 are arranged side by side in the vertical direction, the installation area of the tower 21 can be reduced, and the heliostat 10 around the tower 21 " The installation density of can be increased.

  Furthermore, in the present embodiment, since the first heat receiver 40 and the second heat receiver 50 are arranged in the vertical direction, a part of the plurality of heliostats 10 is disposed only on the first heat receiving pipe assembly 45. The heliostat that irradiates light and the other part of the heliostat that irradiates sunlight only to the second heat receiving pipe assembly 55 makes it possible to irradiate the first heat receiving pipe assembly 45 with the amount of sunlight and the second receiving power. The amount of sunlight applied to the heat tube assembly 55 can be individually controlled. In other words, in this embodiment, it is possible to control the amount of heat of air sent to the high pressure gas turbine 32 and the amount of heat of air sent to the low pressure gas turbine 33.

"Second embodiment"
First, with reference to FIG.6 and FIG.7, 2nd embodiment of a solar thermal power generation installation is described.

  The solar thermal power generation facility of the first embodiment has two heat receivers, a first heat receiver 40 and a second heat receiver 50, as heat receivers. On the other hand, the solar thermal power generation facility of this embodiment is different in that it has only one heat receiver 60 as a heat receiver as shown in FIG. This is the same as the embodiment. Therefore, the heat receiver 60 will be mainly described below.

  The heat receiver 60 covers the first heat receiving pipe assembly 45 having a plurality of heat receiving pipes 47, the second heat receiving pipe assembly 55 having a plurality of heat receiving pipes 57, and the first heat receiving pipe assembly 45 and the second heat receiving pipe assembly 55. And a casing 61.

  The first heat receiving pipe assembly 45 and the second heat receiving pipe assembly 55 are the same as those in the first embodiment, respectively.

  The first heat receiving pipe assembly 45 and the second heat receiving pipe assembly 55 are both disposed on the virtual axis A around the common virtual axis A as in the first embodiment. However, in the present embodiment, the vertical position of the first heat receiving pipe assembly 45 and the vertical position of the second heat receiving pipe assembly 55 partially overlap, and the first heat receiving pipe assembly 45 is the second heat receiving pipe. It is arranged on the inner peripheral side of the assembly 55.

  As shown in FIG. 7, the plurality of heat receiving tubes 47 of the first heat receiving tube assembly 45 differ from the plurality of heat receiving tubes 57 of the second heat receiving tube assembly 55 in the circumferential direction around the virtual axis A. ing.

  As shown in FIG. 6, the casing 61 includes a side peripheral wall plate 62 and a top plate 63, and a circular opening 64 is formed on the lower side with the virtual axis A as the center. The opening 64 is formed in such a size that sunlight from each heliostat 10 can be irradiated to the heat receiving pipe 47 of the first heat receiving pipe assembly 45 and the heat receiving pipe 57 of the second heat receiving pipe assembly 55 in the casing 61. . The lower part of the casing 61 is gradually reduced in diameter toward the lower side, and the lower header pipe 46 a of the first heat receiving pipe assembly 45 and the lower header pipe 56 a of the second heat receiving pipe assembly 55 are both casings 61. Is not housed in the casing 61.

  A heat insulating material is applied to the inner surface of the casing 61 in order to suppress radiation outside the heat energy.

  The casing 61, the first heat receiving pipe assembly 45 and the second heat receiving pipe assembly 55 accommodated in the casing 61 are separated from the partition wall 29 by hooks 99 c and 99 d fixed to the partition wall 29 of the storage 25. It is suspended.

  In addition, the gas turbine equipment in this embodiment is comprised including the compressor 31, the high pressure gas turbine 32, the low pressure gas turbine 33, the regenerative heat exchanger 35, and the heat receiver 60.

  Next, the operation of the solar thermal power generation facility described above will be described.

  The compressed air from the compressor 31 is sent to the first heat receiving pipe assembly 45 through the regenerative heat exchanger 35 and the compressed air pipe 36 as in the first embodiment. The compressed air flows from the inlet pipe 48 of the first heat receiving pipe assembly 45 into the plurality of heat receiving pipes 47 through the lower header pipe 46a.

  The plurality of heat receiving tubes 47 of the first heat receiving tube assembly 45 are irradiated with sunlight from the plurality of heliostats 10 to heat the air flowing through the plurality of heat receiving tubes 47. As in the first embodiment, the air heated in the plurality of heat receiving pipes 47 passes through the upper header pipe 46b and the outlet pipe 49 of the first heat receiving pipe assembly 45, and further passes through the first heated air pipe 37a, and then the high pressure gas turbine. The high pressure gas turbine 32 is driven.

  The air exhausted from the high-pressure gas turbine 32 is sent to the second heat receiving pipe assembly 55 through the first exhaust pipe 38a as in the first embodiment. Air from the high pressure gas turbine 32 flows into the plurality of heat receiving pipes 57 from the inlet pipe 58 of the second heat receiving pipe assembly 55 through the lower header pipe 56a.

  The plurality of heat receiving tubes 57 of the second heat receiving tube assembly 55 are irradiated with sunlight from the plurality of heliostats 10. At this time, as shown in FIG. 7, a part of the sunlight from the plurality of heliostats 10 is irradiated to the plurality of heat receiving tubes 47 of the first heat receiving tube assembly 45, and the other part is the first heat receiving tubes. The light passes through the plurality of heat receiving tubes 47 of the assembly 45 and is irradiated to the plurality of heat receiving tubes 57 of the second heat receiving tube assembly 55. In this way, the sunlight flowing through the plurality of heat receiving tubes 57 is heated by irradiating the plurality of heat receiving tubes 57 with sunlight.

  In the present embodiment, the heliostat 10 that irradiates the plurality of heat receiving tubes 47 of the first heat receiving tube assembly 45 with sunlight, and the heliostat 10 that irradiates the plurality of heat receiving tubes 57 of the second heat receiving tube assembly 55 with sunlight. Is basically the same. That is, in the present embodiment, the first heliostat that irradiates the plurality of heat receiving tubes 47 of the first heat receiving tube assembly 45 basically receives sunlight on the plurality of heat receiving tubes 57 of the second heat receiving tube assembly 55. Also serves as a second heliostat to irradiate.

  The air heated in the plurality of heat receiving pipes 57 of the second heat receiving pipe assembly 55 is similar to the first embodiment in that the upper header pipe 56b and the outlet pipe 59 of the second heat receiving pipe assembly 55, and further the second heated air pipe. After passing through 37b, the gas is sent to the low-pressure gas turbine 33 to drive the low-pressure gas turbine 33.

  The generator 34 generates power by driving the high-pressure gas turbine 32 and the low-pressure gas turbine 33.

  The air exhausted from the low-pressure gas turbine 33 is exhausted to the outside through the second exhaust pipe 38b and the regenerative heat exchanger 35 as in the first embodiment. In the process of passing through the regenerative heat exchanger 35, the air exhausted from the low-pressure gas turbine 33 exchanges heat with the compressed air sent from the compressor 31 to the first heat receiving pipe assembly 45 to heat the compressed air.

  As described above, also in the present embodiment, the air heated by the first heat receiving pipe assembly 45 and driving the high pressure gas turbine 32 is not immediately exhausted but is again heated by the second heat receiving pipe assembly 55 to be low pressure gas turbine. Since 33 is driven, heat energy can be used effectively.

  Moreover, in this embodiment, since the 1st heat receiving pipe assembly 45 is arrange | positioned at the inner peripheral side of the 2nd heat receiving pipe assembly 55, while being able to make the installation area of the tower 21 small, the height of a storage, More specifically, the height of the lower storage chamber of the storage can be reduced.

  As described above, in this embodiment, the heliostat 10 that irradiates the plurality of heat receiving tubes 47 of the first heat receiving tube assembly 45 and the plurality of heat receiving tubes 57 of the second heat receiving tube assembly 55 are irradiated with sunlight. The heliostat 10 is basically in common. However, in order to be able to control the heat quantity of air sent from the first heat receiving pipe assembly 45 to the high pressure turbine 32 and the heat quantity of air sent from the second heat receiving pipe assembly 55 to the low pressure turbine 33, among the plurality of heliostats 10, One part may be a heliostat that irradiates only the first heat receiving pipe assembly 45 with sunlight, and the other part may be a heliostat that irradiates only the second heat receiving pipe assembly 55 with sunlight. In this case, compared to the state shown in FIG. 6, the vertical position of the first heat receiving pipe assembly 45 is positioned slightly above the second heat receiving pipe assembly 55. A plurality of heliostats 10 a (shown in FIGS. 1 and 2) close to the facility 20 are heliostats that irradiate sunlight only on the heat receiving pipe 47 of the first heat receiving pipe assembly 45. The heliostat 10b (shown in FIGS. 1 and 2) may be a heliostat that irradiates sunlight only to the lower part of the heat receiving tube 57 of the second heat receiving tube assembly 55.

  `` Modification of embodiment ''

  In each of the above embodiments, the rotor of the low-pressure gas turbine 33 is connected to the rotor of the high-pressure gas turbine 32. However, the present invention is not limited to this, and as shown in FIG. The 32 rotors may not be connected to the rotor of the low-pressure gas turbine 33. In this case, it is preferable that the rotor of the compressor 31 and the rotor of the high-pressure gas turbine 32 are connected, and the rotor of the low-pressure gas turbine 33 and the rotor of the generator 34 are connected.

  Further, in each of the above embodiments, power generation is performed by driving the gas turbine. However, as shown in FIG. 9, a steam turbine 73 may be further added so that the steam turbine 73 can also generate power. . In this case, for example, a steam generator 71 is provided in a line through which the air exhausted from the regenerative heat exchanger 35 passes, and steam is generated by the heat of the air from the regenerative heat exchanger 35. A method for driving the connected steam turbine 73 is conceivable. Steam discharged from the steam turbine 73 is returned to water by the condenser 75 and returned to the steam generator 71.

  In this way, heat energy can be used more effectively by generating power with the gas turbine and the steam turbine, that is, by performing combined cycle power generation.

  DESCRIPTION OF SYMBOLS 10 ... Heliostat, 11 ... Reflector, 20 ... Tower facility, 21 ... Tower, 25 ... Storage, 31 ... Compressor, 32 ... High pressure gas turbine, 33 ... Low pressure gas turbine, 34 ... Generator, 40 ... First Heat receiver 41 ... first heat receiver casing 45 ... first heat receiving pipe assembly 47 ... heat receiving pipe 50 ... second heat receiving pipe 51 ... second heat receiving casing 55 ... second heat receiving pipe assembly 57 ... receiving Heat pipe, 60 ... heat receiver, 61 ... casing, 73 ... steam turbine

Claims (8)

A first heat receiving pipe assembly having a plurality of heat receiving pipes, wherein the heat receiving pipes are irradiated with sunlight and the fluid in the heat receiving pipes is heated;
A first gas turbine driven by the fluid heated by the first heat receiving pipe assembly;
A plurality of heat receiving pipes through which the fluid exhausted from the first gas turbine flows, the second heat receiving pipe assembly in which sunlight is irradiated to the heat receiving pipe and the fluid in the heat receiving pipe is heated;
A second gas turbine driven by the fluid heated by the second heat receiving pipe assembly;
Turbine equipment characterized by comprising. The turbine equipment according to claim 1,
The first heat receiving pipe assembly and the second heat receiving pipe assembly are both
A ring-shaped lower header pipe into which the fluid flows;
A ring-shaped upper header pipe disposed above the lower header pipe; and
It extends in the vertical direction, connects the lower header pipe and the upper header pipe, the fluid flows from the lower header pipe, and the fluid is heated by being irradiated with sunlight, and the heated fluid is The plurality of heat receiving pipes to be sent to the header pipe;
A turbine facility characterized by comprising: The turbine equipment according to claim 2,
The lower header pipe and the upper header pipe of the first heat receiving pipe assembly form a ring shape around a virtual axis extending in the vertical direction with a first diameter,
The lower header pipe and the upper header pipe of the second heat receiving pipe assembly form a ring shape around the virtual axis with a second diameter larger than the first diameter,
Turbine equipment characterized by that. The turbine equipment according to claim 3,
A first heat receiving casing that covers the first heat receiving pipe assembly; and a second heat receiving casing that covers the second heat receiving pipe assembly;
The first heat receiver tube assembly and the first heat receiver casing are included to form a first heat receiver,
The second heat receiving pipe assembly and the second heat receiver casing have a second heat receiver,
The first heat receiver is disposed above the second heat receiver,
In the first heat receiver casing, an opening around the virtual axis is formed on the lower side so that sunlight from below is irradiated to the plurality of heat receiving tubes of the first heat receiver,
The second heat receiver casing has a lower opening formed around the virtual axis so that sunlight from below is irradiated to the plurality of heat receiving tubes of the second heat receiving tube assembly, The virtual axis is set so that a part of sunlight entering from the opening enters the first heat receiver casing through the opening of the first heat receiver casing and irradiates the plurality of heat receiving tubes of the first heat receiver. A central opening is also formed on the upper side,
Turbine equipment characterized by that. The turbine equipment according to claim 3,
A casing covering the first heat receiving pipe assembly and the second heat receiving pipe assembly;
The first heat receiving pipe assembly, the second heat receiving pipe assembly and the casing form a heat receiver,
The first heat receiving pipe assembly is disposed on an inner peripheral side which is the virtual axis side of the second heat receiving pipe assembly, and the plurality of heat receiving pipes of the first heat receiving pipe assembly are a plurality of the second heat receiving pipe assemblies. The circumferential position around the virtual axis is different from the heat receiving pipe of
The casing has an opening around the virtual axis so that sunlight from below is irradiated to the plurality of heat receiving tubes of the first heat receiving tube assembly and the plurality of heat receiving tubes of the second heat receiving tube assembly. Is formed on the lower side,
Turbine equipment characterized by that. In the turbine equipment according to any one of claims 1 to 3,
A casing covering the first heat receiving pipe assembly and the second heat receiving pipe assembly;
The first heat receiving pipe assembly, the second heat receiving pipe assembly, and the casing form a heat receiver.
Turbine equipment characterized by that. The turbine equipment according to any one of claims 1 to 6,
A steam generator for generating water by heating water with the fluid exhausted from the second gas turbine;
A steam turbine driven by steam generated by the steam generator;
Turbine equipment characterized by comprising. Turbine equipment according to any one of claims 1 to 7,
A first heliostat that has a reflecting mirror and irradiates sunlight to the heat receiving pipe of the first heat receiving pipe assembly of the turbine facility by reflecting sunlight with the reflecting mirror;
A second heliostat that has a reflecting mirror and irradiates sunlight to the heat receiving pipe of the second heat receiving pipe assembly of the turbine facility by reflecting sunlight with the reflecting mirror;
A generator that generates electric power by driving at least one of the first gas turbine and the second gas turbine of the turbine facility;
A solar power generation facility characterized by comprising:

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