Ventilated heat sink tower structure

Abstract

The application discloses a ventilation heat absorption tower, which comprises a radial thin-walled column, a thin-shell wall, an annular beam, a surface skin, a herringbone support, an equipment layer, a conversion layer and a combined roof. The tower structure top supports a molten salt heat absorber, which is connected with a molten salt pipeline, a cold molten salt tank, a hot molten salt tank and a steam generator in the structure, and together forms a heat absorption system. The structure is provided with an air inlet layer, which is connected with a ventilation device outside the structure, and an air outlet layer, which together constitute a natural ventilation direct air cooling system, realizing a ventilation heat absorption tower structure scheme, solving the problems of large power consumption of a traditional direct cooling system, large land occupation of an indirect cooling system, long construction period and high construction cost, and meanwhile, the structure has large overall rigidity, good stability and can easily meet the displacement limit value of the structure top caused by solar light gathering. The application can be widely applied to tower type photo-thermal power generation areas with different wind loads and seismic intensities.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of civil engineering and energy and power engineering, and particularly relates to a ventilation heat absorption tower structure. BACKGROUND

[0002] Tower type photo-thermal power generation is to use a heliostat group to concentrate sunlight on a heat absorber fixed on the top of a heat absorption tower, to generate high temperature, heat molten salt, generate hot steam or high temperature gas, and drive a steam turbine generator set to generate electricity. Common tower type photo-thermal power generation areas include a steam turbine house area, a heat storage and exchange and steam generator area, a cooling facility area, a water treatment and water supply facility area, a sewage facility area, and a heat absorption tower.

[0003] The existing cooling facilities mostly adopt air cooling mode, including direct and indirect air cooling systems. The traditional direct air cooling system adopts mechanical ventilation mode, and itself needs to consume a large amount of electricity, about 5% of the electricity generated by photo-thermal power generation. The large-diameter axial flow fan has a large noise, and the system is greatly affected by the environment wind. The indirect air cooling system sets an air cooling tower, and the circulating water system is in a closed state, and the air cooling power consumption is low, but it has a large occupation area, large initial investment, high construction cost, and the traditional air cooling tower is built with concrete, and has a long construction period and difficult overall construction. After being scrapped, it will become solid waste, and has poor environmental performance.

[0004] The heat absorption tower is one of the important structures of the tower type photo-thermal power generation area. For a unit of more than 50 MW, the tower is higher than 200 m, and the top of the tower is connected with a molten salt heat absorber with a load of about 3000 t. The heat absorption tower should not only ensure the wind resistance and seismic safety performance requirements, but also meet the displacement limit value of the tower top structure caused by the sunlight concentration on the top. SUMMARY

[0005] In order to solve the above problems, the purpose of the present application is to provide a ventilation heat absorption tower, which is used as a reinforced concrete structure air cooling tower on one hand, and a heat absorption tower supporting a molten salt heat absorber on the other hand, to realize a structure scheme of combining an air cooling tower and a heat absorption tower into one, and to solve the problems of large power consumption of the traditional direct cooling system, large occupation area of the indirect cooling system, and long construction period.

[0006] The application provides the following technical scheme: a ventilation heat absorption tower structure, comprising a radial thin-walled column, a thin-shell wall, a ring beam, a surface skin, a herringbone support, an equipment layer, a conversion layer and a combined roof, and a molten salt heat absorber is arranged at the top; the radial thin-walled column is uniformly arranged along the ring direction of the tower and penetrates through the whole structure, and an air inlet layer is arranged at the lower part and an air outlet layer is arranged at the upper part; the thin-shell wall is arranged between the radial thin-walled columns in the range from above the air inlet layer to below the air outlet layer; the ring beam is arranged in the range from above the air inlet layer along the height of the tower; the herringbone support is arranged at the air inlet layer and the air outlet layer; the equipment layer is arranged at the top of the air outlet layer, supported on the radial thin-walled column and the herringbone support and hung on the conversion layer; the conversion layer adopts a truss beam; the conversion layer and the radial thin-walled column jointly support the combined roof; the molten salt heat absorber is arranged at the top of the conversion layer and fixedly connected with the combined roof; the surface skin is arranged between the thin-shell wall and the ring beam in the range from above the air inlet layer to below the air outlet layer; and the radial thin-walled column forms a vertical rib cylinder wall with the thin-shell wall and the surface skin.

[0007] The radial thin-walled column is 8-16 in total, penetrates through the whole structure, adopts a reinforced concrete thin-walled column and is uniformly arranged along the ring direction of the tower; the thin-shell wall is 4-6 in total, adopts a reinforced concrete thin shell and is arranged between the radial thin-walled columns in the range from above the air inlet layer to below the air outlet layer.

[0008] The surface skin adopts a stainless steel plate or an aluminum alloy plate supported by purline.

[0009] The ring beam adopts a reinforced concrete beam to connect the radial thin-walled columns in a ring shape.

[0010] The herringbone support is formed by a one-way inclined support in the form of a box-shaped steel member herringbone and is connected with the radial thin-walled column.

[0011] The equipment layer floor and the combined roof adopt a combined section of a profiled steel plate and a reinforced concrete plate and are provided with a profiled steel shear connector, wherein the profiled steel plate is made of weather-resistant structural steel.

[0012] The molten salt pipeline connected with the molten salt heat absorber, the cold molten salt tank, the hot molten salt tank and the steam generator are arranged inside the ventilation heat absorption tower structure.

[0013] The air inlet layer is connected with a ventilation device outside the structure and jointly forms a natural ventilation direct air cooling system with the ventilation device outside.

[0014] The ventilation heat absorption tower structure has the following beneficial effects:

[0015] (1) The ventilation heat absorption tower integrates an air cooling tower and a heat absorption tower, solves the problems of large occupied area and high initial investment caused by the construction of a traditional indirect cooling system tower and a heat absorption tower, greatly reduces the engineering cost and has a wide application prospect.

[0016] (2) The ventilation heat absorption tower of the present application adopts direct natural ventilation instead of mechanical ventilation air cooling system and indirect air cooling system, greatly reduces the power consumption for cooling, and secondly does not bring noise pollution of mechanical ventilation, and natural ventilation does not need part of the equipment, reduces the construction cost and equipment cost of the factory area;

[0017] (3) The ventilation heat absorption tower of the present application improves the lateral stiffness and torsional stiffness of the overall structure through the radial thin-walled column, thin shell wall, ring beam and herringbone support, improves the coordinated deformation ability and overall stability of the overall structure, and the vertical rib cylinder wall formed by the radial thin-walled column and the thin shell wall and the surface skin can reduce the influence of structure transverse wind vibration, has excellent wind resistance performance and reliable seismic safety performance, and can be applied in areas with large wind load and high seismic intensity;

[0018] (4) The ventilation heat absorption tower of the present application uses stainless steel plate or aluminum alloy plate for the surface skin, and uses profiled weather-resistant structural steel for the equipment layer floor and the top plate, so that the plate material can be reused after the overall structure reaches the service life, improving the engineering environmental protection performance;

[0019] (5) The ventilation heat absorption tower of the present application has large overall structural stiffness and high stability, can support a large mass of molten salt heat absorber at the top, has small lateral displacement of the structure at the top under the action of wind load and seismic load, and meets the displacement limit of the tower top structure caused by solar light gathering at the top. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural diagram of the ventilation heat absorption tower of the present application;

[0021] Figure 2 is Figure 1 a schematic view of A-A section in the middle;

[0022] Figure 3 is Figure 1 a schematic view of B-B section in the middle;

[0023] Figure 4 is Figure 1 a schematic view of C-C section in the middle;

[0024] Figure 5 is Figure 2 a schematic view of D-D section in the middle.

[0025] In the figure, the structural members are: 1-radial thin-walled column, 2-thin shell wall, 3-ring beam, 5-herringbone support, 6-equipment layer, 7-conversion layer, 8-combined top plate;

[0026] Non-structure members: 4-surface skin, 9-molten salt heat absorber;

[0027] Special layers: 10-outlet air layer, 11-inlet air layer. DETAILED DESCRIPTION

[0028] The application is further illustrated by the following examples and drawings.

[0029] The application discloses a ventilation heat absorption tower structure, which comprises a radial thin-wall column 1, a thin-shell wall 2, a ring beam 3, a surface skin 4, a herringbone support 5, an equipment layer 6, a conversion layer 7 and a combined roof 8. The structure is arranged with a molten salt heat absorber at the top, which is connected with molten salt pipelines, cold molten salt tanks, hot molten salt tanks and steam generators inside the structure to form a heat absorption system together. The structure is provided with an air inlet and outlet layer, which is connected with ventilation devices outside the structure to form a natural ventilation direct air cooling system together. The structure scheme combines a heat absorption tower and an air cooling tower, solves the problems of large power consumption of a traditional direct cooling system, large land occupation of an indirect cooling system and high construction cost, and has large overall rigidity, good stability and easy meeting of the displacement limit of the structure at the top of the tower caused by solar light gathering. The structure can be widely applied to tower type photo-thermal power generation areas with different wind loads and seismic intensities.

[0030] With reference to Figure 1 , Figure 3 and Figure 5 , the ventilation heat absorption tower structure comprises a radial thin-wall column 1, a thin-shell wall 2, a ring beam 3, a surface skin 4, a herringbone support 5, an equipment layer 6, a conversion layer 7 and a combined roof 8, and is arranged with a molten salt heat absorber 9 at the top. The radial thin-wall column 1 is uniformly arranged along the ring direction of the tower and penetrates through the whole structure. The thin-shell wall 2 is arranged between the radial thin-wall columns 1 in the range from above an air inlet layer 11 to below an air outlet layer 10. The ring beam 3 is arranged in the range above the air inlet layer 11 along the height of the tower. The surface skin 4 is arranged between the thin-shell wall 2 and the ring beam 3 in the range from above the air inlet layer 11 to below the air outlet layer 10. The herringbone support 5 is arranged at the air inlet layer 11 and the air outlet layer 10. The equipment layer 6 is arranged at the top of the air outlet layer 10, supported on the radial thin-wall column 1 and the herringbone support 5 and hung on the conversion layer 7. The conversion layer 7 is composed of truss beams and supports the combined roof 8 together with the radial thin-wall column 1. The molten salt heat absorber 9 is arranged at the top of the conversion layer 7 and fixed to the combined roof 8.

[0031] With reference to Figure 2 and Figure 3 , preferably, the radial thin-wall column 1 is 8-16 in total, penetrates through the whole structure and is arranged uniformly along the ring direction, and is a reinforced concrete thin-wall column with sufficient rigidity and strength. The thin-shell wall 2 is 4-6 in total and is arranged between the radial thin-wall columns 1 in the range from above the air inlet layer 11 to below the air outlet layer 10. The ring beam 3 is arranged in the range above the air inlet layer 11 along the height of the tower. The herringbone support 5 is formed by one-way inclined bracing of box-shaped steel members and is arranged at the air inlet layer 11 and the air outlet layer 10. The herringbone support 5 and the ring beam 3 improve the lateral rigidity and torsional rigidity of the whole structure together, with reference to Figure 4 .

[0032] Preferably, the radial thin-walled column 1 and the thin-shell wall 2, surface skin 4 form a vertical ribbed cylinder wall, which can effectively reduce the influence of structural transverse wind vibration, further reduce the displacement angle of the tower top under the action of wind load.

[0033] Preferably, the ring beam 3 is arranged above the wind inlet layer 11 along the tower height, which connects the radial thin-walled column 1 in a ring shape, prevents lateral instability of the radial thin-walled column 1, enhances the deformation coordination ability of each radial thin-walled column 1, improves the torsional stiffness of the overall structure, and improves the overall stability of the structure.

[0034] Preferably, the truss beams of the transfer layer 7 are all formed by planar intersection of profile steel members, connected by high-strength bolts, and connected with 8-16 radial thin-walled columns 1 at the periphery, which can stably support the large-mass molten salt heat absorber 9 at the top, and further meet the displacement limit of the tower top structure under solar light concentration.

[0035] Preferably, the surface skin 4 is made of stainless steel plate or aluminum alloy plate supported by purlin.

[0036] Preferably, the floor of the equipment layer 6 and the combined roof 8 adopt a combined section of profiled steel plate and reinforced concrete plate, and a profiled steel shear connector is arranged, wherein the profiled steel plate material is made of weather-resistant structural steel, which prevents the influence of water vapor at the top on the performance of the structure and improves the steam corrosion resistance of the roof of the air outlet layer.

[0037] Preferably, the equipment layer 6 is supported on the radial thin-walled column 1 and the herringbone support 5, and suspended on the transfer layer 7, which improves the space utilization, reduces the height of the structure, reduces the engineering quantity, arranges the shock absorber in the equipment layer 6, improves the seismic performance of the overall structure, and further reduces the displacement deformation of the tower top structure under earthquake.

[0038] Preferably, the ventilation and heat absorption structure is provided with a wind inlet layer 11 connected with the ventilation device outside the structure, and an air outlet layer 10, which together constitute a natural ventilation direct air cooling system.

[0039] Example 1:

[0040] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , only as an example.

[0041] As shown in Figures 1-5 , a ventilation and heat absorption tower structure includes a radial thin-walled column 1, a thin-shell wall 2, a ring beam 3, a surface skin 4, a herringbone support 5, an equipment layer 6, a transfer layer 7, and a combined roof 8, and a molten salt heat absorber 9 is arranged.

[0042] The radial thin-walled columns 1 are uniformly arranged along the tower ring, and there are 8-16 columns in total, penetrating the whole structure, and the radial thin-walled columns are made of reinforced concrete.

[0043] The ventilation heat absorption structure is provided with an air inlet layer 11 connected with a ventilation device outside the structure, and an air outlet layer 10, which together form a natural ventilation direct air cooling system.

[0044] The thin-shell walls 2 are arranged at intervals between the radial thin-walled columns 1 in the range from above the air inlet layer 11 to below the air outlet layer 10, and the ring-shaped beams 3 are arranged at intervals along the tower height in the range above the air inlet layer 11, and the chevron braces 5 are made of box-shaped steel members and are arranged between the air inlet layer 11 and the air outlet layer 10, which together improve the lateral stiffness and torsional stiffness of the whole structure.

[0045] The radial thin-walled columns 1, the thin-shell walls 2 and the surface skin 4 form a vertical-ribbed cylinder wall, which can effectively reduce the influence of transverse wind vibration and further reduce the displacement angle of the tower top under the action of wind load.

[0046] The ring-shaped beams 3 are arranged at intervals along the tower height in the range above the air inlet layer 11, which connects the radial thin-walled columns 1 in a ring shape, prevents lateral instability of the radial thin-walled columns 1, enhances the deformation coordination ability of each radial thin-walled column 1, improves the torsional stiffness of the whole structure, and improves the overall stability of the structure.

[0047] The truss beams of the conversion layer 7 are all made of planar intersections of profile steel members and are connected by high-strength bolts, and the periphery is connected with 8-16 radial thin-walled columns 1, which can stably support the large-mass molten salt heat absorber 9 at the top, and further meet the displacement limit of the equipment at the top of the tower under the sunlight collection.

[0048] The surface skin 4 is made of stainless steel plate or aluminum alloy plate supported by purlins.

[0049] The floor of the equipment layer 6 and the combined roof 8 are made of a combined section of profiled steel plate and reinforced concrete plate, and a profiled steel shear connector is arranged, wherein the profiled steel plate is made of weather-resistant structural steel to prevent the influence of water vapor at the top on the performance of the structure and improve the steam corrosion resistance of the roof of the air outlet layer.

[0050] The equipment layer 6 is supported on the blade 1 column and the chevron brace 5 and is suspended on the conversion layer 7, which improves the space utilization, reduces the height of the structure, reduces the engineering quantity, arranges the shock absorber in the equipment layer 6, improves the seismic performance of the ventilation heat absorption tower structure, and further reduces the displacement deformation of the tower top structure under the earthquake.

[0051] The molten salt heat absorber 9 is arranged on the top of the conversion layer 7 and is fixed to the combined top plate 8, is connected with the molten salt pipeline inside the heat absorption tower, the cold molten salt tank, the hot molten salt tank and the steam generator, the solar energy is reflected to the molten salt heat absorber 9 on the top by the heliostat group, the temperature of the heat absorber rises to 1000 Fahrenheit after heat absorption, the cold molten salt is pumped to the molten salt heat absorber 9 from the cold molten salt tank by the cold salt pump and is heated after energy absorption, the heated molten salt flows into the hot molten salt tank and is stored, the hot molten salt in the hot molten salt tank is pumped into the steam generator by the hot salt pump, the water is pumped to the steam generator by the water pump, the molten salt and the water are fully heat exchanged in the steam generator, the hot steam is generated, is sent to the steam turbine and does work to generate electricity;

[0052] The above is a typical example of the present application, and the implementation of the present application is not limited thereto.

[0053] The above description is only a description of the preferred embodiments of the present application, and is not any limitation on the scope of the present application. Any modification or modification made by any person skilled in the art according to the above disclosed technical content should be regarded as an equivalent effective embodiment, and belongs to the protection scope of the technical scheme of the present application.

Claims

1. A vented heat sink tower structure, characterized by, The application relates to a ventilation and heat absorption tower structure, which comprises radial thin-wall columns (1), thin-shell walls (2), ring beams (3), surface skins (4), herringbone supports (5), equipment layers (6), conversion layers (7) and combined roof plates (8), and a molten salt heat absorber (9) is arranged at the top; the radial thin-wall columns (1) are uniformly arranged along the tower ring and penetrate through the whole structure, a wind inlet layer (11) is arranged at the lower part, and a wind outlet layer (10) is arranged at the upper part; the thin-shell walls (2) are arranged between the radial thin-wall columns (1) in the range from above the wind inlet layer (11) to below the wind outlet layer (10); the ring beams (3) are arranged in the range above the wind inlet layer (11) and penetrate through the whole structure; the herringbone supports (5) are arranged at the wind inlet layer (11) and the wind outlet layer (10); the equipment layer (6) is arranged at the top of the wind outlet layer (10), is supported on the radial thin-wall columns (1) and the herringbone supports (5) and is hung on the conversion layer (7); the conversion layer (7) is a truss beam; the conversion layer (7) and the radial thin-wall columns (1) jointly support the combined roof plate (8); the molten salt heat absorber (9) is arranged at the top of the conversion layer (7) and is fixedly connected with the combined roof plate (8); the surface skin (4) is arranged between the thin-shell walls (2) and the ring beams (3) in the range from above the wind inlet layer (11) to below the wind outlet layer (10); the radial thin-wall columns (1) form vertical rib cylinder walls with the thin-shell walls (2) and the surface skin (4); the wind inlet layer is connected with a ventilation device outside the structure and forms a natural ventilation and direct air cooling system together with the ventilation device outside the structure; the radial thin-wall columns (1) are 8-16 in total, penetrate through the whole structure, are made of reinforced concrete thin-wall columns and are uniformly arranged along the tower ring; the thin-shell walls (2) are 4-6 in total, are made of reinforced concrete thin shells, are arranged between the radial thin-wall columns (1) in the range from above the wind inlet layer (11) to below the wind outlet layer (10); and the ring beams (3) are made of reinforced concrete beams and connect the radial thin-wall columns (1) in a ring shape.

2. The vented heat sink tower structure of claim 1, wherein, The surface skin (4) is made of a stainless steel plate or an aluminum alloy plate supported by purline.

3. The vented heat sink tower structure of claim 1, wherein, The herringbone supports (5) are all made of box-shaped steel member herringbone unidirectional diagonal braces and are connected with the radial thin-wall columns (1) respectively.

4. The vented heat sink tower structure of claim 1, wherein, The equipment layer (6) floor and the combined roof plate (8) are made of a profiled steel plate and a reinforced concrete plate combined section and are provided with profiled steel shear connectors, wherein the profiled steel plate is made of weather-resistant structural steel.

5. The vented heat sink tower structure of claim 1, wherein, The molten salt pipeline connected with the molten salt heat absorber (9), the cold molten salt tank, the hot molten salt tank and the steam generator are all arranged inside the ventilation and heat absorption tower structure.

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