Cylinder-in-cylinder structure heat absorption tower

Abstract

The utility model provides a cylinder-in-cylinder structure heat absorption tower which is small in transfer layer span, low in construction difficulty, capable of improving the rigidity of the heat absorption tower and convenient to use, and belongs to the technical field of tower type solar photo-thermal power stations. A cylinder-in-cylinder structure heat absorption tower comprises a concrete supporting structure, a heat absorber supporting steel structure and a conversion platform. The concrete supporting structure comprises an outer supporting cylinder and an inner supporting cylinder arranged in the outer supporting cylinder, the outer supporting cylinder and the inner supporting cylinder are coaxially arranged, and a concrete supporting column arranged in the radial direction of the outer supporting cylinder is arranged between the inner wall of the outer supporting cylinder and the outer wall of the inner supporting cylinder. One end of the reinforcing connecting piece is connected with the outer supporting cylinder, and the other end is connected with the inner supporting cylinder; the heat absorber supporting steel structure is installed on the conversion platform, and the center of the heat absorber supporting steel structure is provided with an elevator vertical lifting channel with the lower end communicating with an inner cavity of the inner supporting cylinder. Displacement of the top of the heat absorption tower can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tower-type solar thermal power stations, in particular to a heat absorption tower with a tube-in-tube structure. Background Art

[0002] Tower solar thermal power generation uses tens of thousands of heliostats to reflect and focus solar radiation onto the absorber at the top of the central heat absorption tower, converting solar radiation into heat energy of a heat transfer medium, which then heats water through the heat transfer medium to form steam to drive a steam turbine generator to generate electricity. The heat absorption tower is the core structure of the concentrated solar heat collection system. The tower is over 200m high, and the upper area of ​​the tower is equipped with equipment with a load of over 2,000t. In order to ensure safety and meet the requirements of solar focusing, there are strict restrictions on the structural displacement of the top of the heat absorption tower, and the wind and earthquake resistance of the heat absorption tower.

[0003] The traditional heat absorption tower structure generally adopts a lower single-tube reinforced concrete structure and an upper absorber supporting steel structure, and the upper and lower parts are converted up and down through a conversion platform. Due to the high height and heavy load-bearing weight of the heat absorption tower, the inner diameter of the lower single-tube reinforced concrete structure is designed to be large, while the upper structure needs to be installed with a concentrating heat absorber, so its outer diameter needs to be designed to be small. This structure not only has weak overall rigidity, but also has a large span of the conversion layer of the heat absorption tower structure, which is difficult to design and construct. In addition, the elevator cannot go up and down directly, and it is necessary to transfer at the conversion layer, which is also inconvenient to use. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a tube-in-tube structure heat absorbing tower with small transition layer span, low construction difficulty, improved heat absorbing tower rigidity and convenient use.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a tube-in-tube structure heat absorbing tower, comprising a concrete support structure, a heat absorber support steel structure arranged above the concrete support structure, and a conversion platform for converting and connecting the concrete support structure and the heat absorber support steel structure;

[0006] The concrete support structure comprises an outer support tube and an inner support tube arranged in the outer support tube, the outer support tube is coaxially arranged with the inner support tube, a distance is arranged between the outer wall of the inner support tube and the inner wall of the outer support tube, and a reinforcing connector is arranged along the radial direction of the outer support tube between the inner wall of the outer support tube and the outer wall of the inner support tube, and one end is connected to the outer support tube and the other end is connected to the inner support tube;

[0007] The conversion platform is arranged on the upper part of the outer support tube and is located between the outer support tube and the inner support tube. One end of the conversion platform is connected to the inner support tube, and the other end is connected to the outer support tube.

[0008] The heat absorber supporting steel structure is installed on the conversion platform, and a channel for elevator lifting is provided at the center of the heat absorber supporting steel structure, the lower end of which is connected with the inner cavity of the inner supporting tube.

[0009] Furthermore, from the above, at least, the reinforcing connectors are provided in multiple layers, each layer has multiple reinforcing connectors, and are arranged along the circumferential direction of the inner support tube.

[0010] Further, the conversion platform includes an upper structural layer and a lower structural layer arranged up and down;

[0011] The upper structural layer includes a plurality of upper chord main beams uniformly arranged along the circumference of the outer support tube, the upper chord main beams are arranged along the radial direction of the outer support tube, and one end is connected to the outer support tube and the other end is connected to the inner support tube, and the upper structural layer also includes an upper inner ring beam arranged between the two ends of the upper chord main beams and connecting the upper chord main beams into a whole;

[0012] The lower structural layer includes a plurality of lower chord main beams arranged along the circumference of the outer support tube, the lower chord main beams are arranged along the radial direction of the outer support tube, one end of the lower chord main beams are connected to the outer support tube and the other end is connected to the inner support tube, the lower chord main beams are arranged one by one with the upper chord main beams, and the lower structural layer also includes a lower ring beam arranged between the two ends of the lower chord main beams and connecting the lower chord main beams into a whole;

[0013] A vertical support is provided between the lower chord main beam and the corresponding upper chord main beam.

[0014] Furthermore, the upper inner ring beam and the lower ring beam are arranged correspondingly up and down, and the vertical support is arranged at the position where the lower ring beam is arranged on the lower chord main beam.

[0015] Furthermore, the outer end of the upper chord main beam extends outside the outer support tube, and the upper structural layer also includes an upper outer ring beam which is arranged at the outer end of the upper chord main beam and connects the outer end of the upper chord main beam into a whole.

[0016] Furthermore, X-shaped supports are respectively provided on both sides of the vertical support.

[0017] Furthermore, the absorber supporting steel structure includes a plurality of outer columns and a plurality of inner columns, the outer columns are connected to the inner columns as a whole, the outer columns are installed on the upper chord main beam and are arranged one-to-one with the vertical supports, and the inner columns are installed on the top of the inner support tube and are arranged along the circumference of the inner support tube.

[0018] Furthermore, the outer support tube and the inner support tube are both cylinders.

[0019] The beneficial effects of the utility model are:

[0020] The concrete support structure adopts a double-tube structure of an outer support tube and an inner support tube. The inner support tube and the outer support tube are connected as a whole through a reinforced connector. The inner support tube and the outer support tube restrain each other and coordinate the force, which can improve the rigidity of the lower concrete support structure, and the load transmitted to the foundation of the heat absorption tower is more uniform, which optimizes the wind resistance and earthquake resistance of the heat absorption tower and can reduce the displacement of the top of the heat absorption tower;

[0021] The reinforced connector can be used as a supporting beam for the platform for installing equipment or maintenance. Its two ends are supported by inner and outer support tubes, with good bearing capacity and greater safety.

[0022] The conversion platform is supported by the inner support tube and the outer support tube. The conversion platform has a small span, is easy to construct, is more convenient, and has better bearing capacity, which can better ensure that the structural displacement of the top of the heat absorption tower is within the required range.

[0023] This structure can use the inner support tube and the channel in the center of the absorber supporting steel structure as an elevator lifting channel. The elevator can go directly up to the top of the absorber tower. Only one elevator is needed, and there is no need to change elevators in the middle, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the utility model;

[0026] Figure 3 This is a schematic diagram of the setting of one layer of reinforcement connectors;

[0027] Figure 4 is a schematic diagram of the arrangement of another layer of reinforcing connectors;

[0028] Figure 5 yes Figure 1 Section view along AA;

[0029] Figure 6 It is a schematic diagram of the structure of the lower structural layer;

[0030] As shown in the figure: concrete support structure 1, transfer platform 2, absorber support steel structure 3, outer support tube 11, inner support tube 12, reinforced connector 13, reinforced ring beam 14, upper structural layer 21, lower structural layer 22, upper chord main beam 211, upper inner ring beam 212, lower chord main beam 221, lower ring beam 222, vertical support 23, upper outer ring beam 213, X-shaped support 24, channel 31, outer column 32, inner column 33. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0032] like Figure 1 , Figure 2 As shown, the tube-in-tube structure heat absorption tower of the utility model comprises a concrete support structure 1, a heat absorber support steel structure 3 arranged above the concrete support structure 1, and a conversion platform 2 for converting and connecting the concrete support structure 1 and the heat absorber support steel structure 3. The concrete support structure 1 comprises an outer support tube 11 and an inner support tube 12 arranged inside the outer support tube 11, the outer support tube 11 and the inner support tube 12 are arranged coaxially, a spacing is arranged between the outer wall of the inner support tube 12 and the inner wall of the outer support tube 11, and a reinforcing connector 13 is arranged along the radial direction of the outer support tube 11, one end of which is connected to the outer support tube 11 and the other end of which is connected to the inner support tube 12. The conversion platform 2 is arranged on the upper part of the outer support tube 11 and located between the outer support tube 11 and the inner support tube 12, one end of the conversion platform 2 is connected to the inner support tube 12, and the other end is connected to the outer support tube 11. The heat absorber supporting steel structure 3 is installed on the conversion platform 2 , and a channel 31 for elevator lifting is provided at the center of the heat absorber supporting steel structure 3 , the lower end of which is connected to the inner cavity of the inner supporting tube 12 .

[0033] The outer support tube 11 and the inner support tube 12 can be rectangular, circular, etc. Considering wind resistance, stability, etc., it is best that the outer support tube 11 and the inner support tube 12 are both circular. The conversion platform 2 and the reinforcement connector 13 can be a steel structure, a solid steel beam structure or a reinforced concrete structure. For the convenience of construction, the reinforcement connector 13 and the conversion platform 2 are preferably a steel structure.

[0034] The utility model of the tube-in-tube structure heat absorbing tower, the lower concrete support structure adopts a double tube structure of an outer support tube 11 and an inner support tube 12, the inner support tube 12 and the outer support tube 11 are connected as a whole by a reinforcing connector 13, which can improve the rigidity of the lower concrete support structure, and the load transmitted to the foundation of the heat absorbing tower is more uniform, and the reinforcing connector 13 can also be used as a platform support for installing equipment or maintenance, with good bearing capacity and safety. Moreover, this structure can support the conversion platform 2 through the inner support tube 12 and the outer support tube 11 together, the conversion platform 2 has a small span, and the construction is more convenient, and the bearing capacity is also better, which can better ensure that the structural displacement of the top of the heat absorbing tower is within the required range. In addition, this structure can use the inner support tube 12 and the channel 31 in the center of the heat absorber support steel structure 3 as an elevator lifting channel, and the elevator can directly rise to the top of the heat absorbing tower, only one elevator is needed, and there is no need to transfer elevators in the middle, which is more convenient to use.

[0035] like Figure 1As shown, specifically, from the top at least, the reinforcing connector 13 is provided with multiple layers, and each layer of reinforcing connectors 13 is multiple and arranged along the circumferential direction of the inner support tube 12. The reinforcing connectors 13 of each layer can be provided with a reinforcing ring beam 14 to connect them into a whole as needed, and the reinforcing ring beam can be one or more. The specific number of reinforcing connectors 13 of each layer can be 2 or any number above 2, which is specifically set according to actual needs. In order to ensure that the lower concrete support structure is subjected to balanced force, the reinforcing connectors of each layer are usually arranged in a central symmetrical manner. Figure 3 It is a structural diagram when the reinforcing connector is used as a support (beam) for the equipment installation layer. Figure 4 It is a structural diagram when the reinforcing connector is used as a support (beam) of the maintenance layer.

[0036] The conversion platform 2 can be made of one or more layers of steel structure. In the embodiment of the utility model, the conversion platform 2 includes an upper structure layer 21 and a lower structure layer 22 arranged up and down. Figure 5 As shown, the upper structure layer 21 includes a plurality of upper chord main beams 211 uniformly arranged along the circumference of the outer support tube 11. The upper chord main beams 211 are arranged along the radial direction of the outer support tube 11, and one end is connected to the outer support tube 11 and the other end is connected to the inner support tube 12. The upper structure layer 21 also includes an upper inner ring beam 212 arranged between the two ends of the upper chord main beams 211 and connecting the upper chord main beams 211 into a whole. Figure 6 As shown, the lower structural layer 22 includes a plurality of lower chord main beams 221 arranged along the circumference of the outer support tube 11, the lower chord main beams 221 are arranged along the radial direction of the outer support tube 11, and one end is connected to the outer support tube 11 and the other end is connected to the inner support tube 12, the lower chord main beams 221 are arranged one-to-one with the upper chord main beams 211, and the lower structural layer 22 also includes a lower ring beam 222 arranged between the two ends of the lower chord main beams 221 and connecting the lower chord main beams 221 into a whole. A vertical support 23 is provided between the lower chord main beams 221 and the corresponding upper chord main beams 211. The lower chord main beams 221 are arranged one-to-one with the upper chord main beams 211, that is, a corresponding lower chord main beam 221 is arranged directly below each upper chord main beam 211.

[0037] In order to further ensure the integrity and rigidity: the upper inner ring beam 212 and the lower ring beam 222 are arranged in correspondence with each other, that is, the lower ring beam 222 is located directly below the upper inner ring beam 212, and the vertical support 23 is arranged at the position where the lower ring beam 222 is arranged on the lower chord main beam 221; the outer end of the upper chord main beam 211 extends to the outside of the outer support tube 11, and the upper structural layer 21 also includes an upper outer ring beam 213 arranged at the outer end of the upper chord main beam 211; X-shaped supports 24 are respectively provided on both sides of the vertical support 23.

[0038] The above-mentioned conversion platform has high rigidity, strong bearing capacity, and clear force transmission, and can better and more evenly transfer the upper load to the outer support tube 11 and the inner support tube 12.

[0039] The heat absorber support steel structure 3 can be installed on the conversion platform in various ways. In order to better ensure the installation stability of the heat absorber support steel structure 3 and ensure that it is not easily deformed or displaced in the later stage, preferably, Figure 2 , Figure 5 As shown, preferably, the absorber supporting steel structure 3 includes a plurality of outer columns 32 and a plurality of inner columns 33, and the outer columns 32 and the inner columns 33 are connected into a whole through cross beams, ring beams and diagonal braces, etc. The outer columns 32 are installed on the upper chord main beam 211, and are arranged one-to-one with the vertical braces 23, that is, they are arranged directly above the vertical braces 23, and the inner columns 33 are installed on the top of the inner support tube 12 and are arranged along the circumference of the inner support tube 12. With this arrangement, part of the load of the absorber support steel structure 3 can be directly transmitted to the inner support tube 12 through the inner column 33, which can reduce the load of the conversion platform. Moreover, since the outer column 32 and the vertical support 23 are arranged in a one-to-one correspondence, the load of the conversion platform can also be better transmitted to the lower chord main beam 221 and the upper chord main beam 211 through the vertical support 23, ensuring the uniformity of the load borne by the lower chord main beam 221 and the upper chord main beam 211, thereby preventing or reducing deformation and displacement of the conversion platform and the absorber support steel.

Claims

1. A tube-in-tube structure heat absorption tower, comprising a concrete support structure (1), a heat absorber support steel structure (3) arranged above the concrete support structure (1), and a conversion platform (2) for converting and connecting the concrete support structure (1) and the heat absorber support steel structure (3), characterized in that: The concrete support structure (1) comprises an outer support tube (11) and an inner support tube (12) arranged in the outer support tube (11), the outer support tube (11) and the inner support tube (12) are coaxially arranged, a spacing is arranged between the outer wall of the inner support tube (12) and the inner wall of the outer support tube (11), and a reinforcing connector (13) is arranged along the radial direction of the outer support tube (11) between the inner wall of the outer support tube (11) and the outer wall of the inner support tube (12), one end of which is connected to the outer support tube (11) and the other end of which is connected to the inner support tube (12); The conversion platform (2) is arranged on the upper part of the outer support tube (11) and is located between the outer support tube (11) and the inner support tube (12); one end of the conversion platform (2) is connected to the inner support tube (12), and the other end is connected to the outer support tube (11); The heat absorber support steel structure (3) is installed on the conversion platform (2), and a channel (31) for elevator lifting is provided at the center of the heat absorber support steel structure (3), the lower end of which is connected to the inner cavity of the inner support tube (12).

2. The tube-in-tube structure heat absorption tower according to claim 1, characterized in that: From the above, at least, the reinforcing connecting members (13) are provided with multiple layers, each layer has multiple reinforcing connecting members (13) arranged along the circumferential direction of the inner support tube (12).

3. The tube-in-tube structure heat absorption tower according to claim 1, characterized in that: The conversion platform (2) comprises an upper structural layer (21) and a lower structural layer (22) arranged one above the other; The upper structural layer (21) comprises a plurality of upper chord main beams (211) uniformly arranged along the circumference of the outer support tube (11), the upper chord main beams (211) being arranged along the radial direction of the outer support tube (11), and one end of the upper chord main beams (211) being connected to the outer support tube (11) and the other end of the upper chord main beams (211) being connected to the inner support tube (12), and the upper structural layer (21) further comprises an upper inner ring beam (212) being arranged between the two ends of the upper chord main beams (211) and connecting the upper chord main beams (211) into a whole; The lower structural layer (22) comprises a plurality of lower chord main beams (221) arranged along the circumference of the outer support tube (11); the lower chord main beams (221) are arranged along the radial direction of the outer support tube (11), and one end is connected to the outer support tube (11) and the other end is connected to the inner support tube (12); the lower chord main beams (221) are arranged in a one-to-one correspondence with the upper chord main beams (211); the lower structural layer (22) further comprises a lower ring beam (222) arranged between the two ends of the lower chord main beams (221) and connecting the lower chord main beams (221) into a whole; A vertical support (23) is provided between the lower chord main beam (221) and the corresponding upper chord main beam (211).

4. The tube-in-tube structure heat absorption tower according to claim 3, characterized in that: The upper inner ring beam (212) and the lower ring beam (222) are arranged correspondingly up and down, and the vertical support (23) is arranged at the position where the lower ring beam (222) is arranged on the lower chord main beam (221).

5. The tube-in-tube structure heat absorption tower according to claim 3, characterized in that: The outer end of the upper chord main beam (211) extends outside the outer support tube (11), and the upper structural layer (21) also includes an upper outer ring beam (213) which is arranged at the outer end of the upper chord main beam (211) and connects the outer end of the upper chord main beam (211) into a whole.

6. The tube-in-tube structure heat absorption tower according to claim 3, characterized in that: X-shaped supports (24) are respectively provided on both sides of the vertical support (23).

7. The tube-in-tube structure heat absorption tower according to claim 3, 4, 5 or 6, characterized in that: The absorber support steel structure (3) includes a plurality of outer columns (32) and a plurality of inner columns (33), wherein the outer columns (32) and the inner columns (33) are connected as a whole, wherein the outer columns (32) are mounted on the upper chord main beam (211) and are arranged one-to-one with the vertical supports (23), and wherein the inner columns (33) are mounted on the top of the inner support tube (12) and are arranged along the circumference of the inner support tube (12).

8. The tube-in-tube structure heat absorption tower according to claim 1, characterized in that: The outer support tube (11) and the inner support tube (12) are both cylinders.

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