High tower with self-supporting inclined deflector roof

Abstract

The application discloses a high-position tower with a self-supporting inclined flow guide eave, which comprises a self-supporting inclined flow guide eave device and a high-position tower; the high-position tower comprises a tower drum, an air inlet and an H-shaped column; the self-supporting inclined flow guide eave device comprises a flow guide eave and a supporting column, and the self-supporting inclined flow guide eave device is arranged in a circumferential direction of the tower; the flow guide eave is arranged obliquely above the air inlet on the outer side of the tower body, the inner end of the flow guide eave is fixed at the tower drum, the height from the air inlet to the top of the flow guide eave is H2, and the value range of H2 is 0.4 m≤H2≤5 m; the flow guide eave is horizontally downwardly arranged and forms a certain angle θ with a horizontal plane, and the angle range is 0<θ≤20°; the supporting column is fixed on the H-shaped column by means of a ring hoop; the supporting column forms a certain angle α with a vertical plane, and the value range of α is 20°≤α≤60°; the self-supporting inclined flow guide eave device can effectively eliminate the air longitudinal vortex at the upper edge of the air inlet in the tower, strengthen the heat and mass transfer in the upper edge region of the air inlet in the tower, and improve the performance of the cooling tower.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of thermal power plants and atomic power plants, and in particular to a high tower with a self-supporting inclined guide roof. BACKGROUND

[0002] High towers are increasingly used in China. With the construction of 1000MW large-scale power plant units in China and the emphasis on thermal pollution of circulating water in coastal power plants, high water collection cooling towers have become a new direction of super-large cooling tower technology development. Compared with conventional natural draft cooling towers, high water collection cooling towers use water collection devices for high water collection, which has the advantages of energy saving and noise reduction.

[0003] According to existing research, under windless conditions, the air flow rate along the height distribution at the inlet of the high tower is relatively uniform, but there is a large longitudinal vortex in the outermost air flow channel of the water collection device region formed between the outermost water collection unit of the high tower and the tower wall, which reduces the air flow rate in this region and the heat and mass transfer in the upper packing zone. Under wind conditions, the air longitudinal vortex in the water collection device region of the windward side of the high tower will gradually increase with the increase of wind speed. The existence of air longitudinal vortex in the high tower will affect the heat transfer performance of the high tower. Therefore, it is necessary to study how to reduce or eliminate the air longitudinal vortex in the water collection device region of the high water collection cooling tower to maximize the cooling performance of the high water collection tower.

[0004] Chinese patent application No. 201910411269.1 discloses a natural draft high water collection cooling tower with internal and external partitioned water collection. The present application combines the air flow field structure characteristics of conventional cooling towers and high towers to design a natural draft high water collection cooling tower with internal and external partitioned water collection. The inner zone uses water collection devices such as water collection inclined plates, U-shaped water collection channels, and water collection channels to collect water below the filler; the outer zone does not set water collection devices below the filler, and the cooling water falls into the tower bottom pool below the filler, i.e. uses the tower bottom pool to collect water. The internal and external partitioned water collection can reduce or eliminate the longitudinal vortex in the high water collection cooling tower, fully utilize the cooling capacity of the filler, and improve the cooling efficiency. This patent takes different water collection measures in the inner and outer zones, which can reduce or eliminate the longitudinal vortex in the high water collection cooling tower. However, this method is prone to freezing of the cooling water in the outer zone in winter, which affects the performance of the high tower, and the analysis is not comprehensive.

[0005] Chinese patent application No. 201810106294.4 discloses a filler capable of eliminating longitudinal vortex and a high-level water collecting cooling tower. The filler capable of eliminating longitudinal vortex is composed of inner ring filler, middle ring filler and outer ring filler. The bottom of the middle ring filler is convex downward relative to the bottom of the inner ring filler, and the bottom of the outer ring filler is convex downward relative to the bottom of the middle ring filler. The convex surface faces the water collecting device. The top of the inner ring filler, the middle ring filler and the outer ring filler is flush. The high-level water collecting cooling tower is composed of a tower barrel, a water remover, a water distribution system, the filler capable of eliminating longitudinal vortex and a water collecting device. The bottom of the outer ring of the filler is convex downward relative to the inner ring, which reduces the space for generating longitudinal vortex in the outer ring water collecting device area of the high-level tower, effectively reduces or even eliminates the longitudinal vortex of the air flow field in the outer ring water collecting device area of the high-level tower, strengthens the heat and mass transfer in the outer ring area of the high-level tower, improves the thermal performance of the high-level tower, and has important value for design optimization and system energy saving. The patent effectively reduces or even eliminates the longitudinal vortex of the air flow field in the outer ring water collecting device area of the high-level tower by changing the structure of the filler layer inside the high-level tower. However, this method requires adjustment of the filler layer, which is not easy to construct, and the structure of the high-level tower body will be affected. SUMMARY

[0006] To solve the problems in the background, the purpose of the present application is to provide a high-level tower with a self-supporting inclined flow guide eave.

[0007] To achieve the above-mentioned purpose, the following technical scheme is provided: a high-level tower with a self-supporting inclined flow guide eave, comprising a self-supporting inclined flow guide eave device and a high-level tower; the self-supporting inclined flow guide eave device comprises a flow guide eave and a support column, and is arranged circumferentially along the high-level tower to effectively eliminate the longitudinal vortex of air at the upper edge of the inlet of the tower, and to strengthen the local heat and mass transfer in the upper edge area of the inlet of the tower; the high-level tower comprises a tower barrel, an inlet and an A-frame column; the height of the tower barrel of the high-level tower is H, and the value range of H is 30m≤H≤150m; the height of the inlet is H1, and the value range of H1 is 5m≤H1≤25m; the A-frame column is used to support the tower body and the support column; the flow guide eave is inclined and arranged above the inlet on the outside of the tower body, the inner end of the flow guide eave is fixed at the tower barrel, the height from the upper side of the inlet is H2, and the value range of H2 is 0.4m≤H2≤5m; the flow guide eave is installed horizontally downward, and forms a certain angle θ with the horizontal plane, and the angle range is 0<θ≤20°; the vertical height of the outer end of the flow guide eave from the ground is H3, and H3≥H1; the support column is fixed on the A-frame column by a ring; the support column is used to support the inclined flow guide eave device; the support column forms a certain angle α with the vertical plane, and the value range of α is 20°≤α≤60°.

[0008] The self-supporting inclined flow guide roof device is arranged circumferentially along the high tower, and the number of the self-supporting inclined flow guide roof device is N, 1≤N≤100, and N is an integer.

[0009] The number of the support columns is M, and M≥2N, and M is an integer.

[0010] The material of the flow guide roof is aluminized zinc plate, tinned plate, glass fiber reinforced plastic, stainless steel plate, composite steel plate, color-coated steel plate and magnesium plate; and the material of the support column is stainless steel, galvanized steel, aluminum-magnesium alloy.

[0011] The self-supporting inclined flow guide roof device can effectively eliminate the air longitudinal vortex at the upper edge of the air inlet of the tower, improve the air inlet speed at the edge of the air inlet, and strengthen the heat and mass transfer at the upper edge region of the air inlet in the tower. The traditional flow guide roof is fixed through the vertical column outside the tower, and the support structure of the flow guide roof is fixed on the herringbone column in the application, so that the air inlet area is increased, and the operation performance of the cooling tower is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The application will be further described below with reference to the drawings.

[0013] Figure 1 is a high tower model structure schematic diagram with a self-supporting inclined flow guide roof.

[0014] Figure 2 is a high tower model structure side view with a self-supporting inclined flow guide roof.

[0015] Figure 3 is a speed field schematic diagram at the air inlet without a self-supporting inclined flow guide roof device.

[0016] Figure 4 is a speed field schematic diagram at the air inlet with a self-supporting inclined flow guide roof device.

[0017] Wherein: 1. tower barrel, 2. air inlet, 3. herringbone column, 4. flow guide roof, 5. support column, 6. air longitudinal vortex. DETAILED DESCRIPTION

[0018] The specific embodiments of the application will be described in detail below with reference to the drawings, and it should be understood that the specific embodiments described herein are only used to illustrate and explain the application, and are not used to limit the application.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Example 1 is a high-level tower with a self-supporting inclined guide eaves.

[0021] like Figures 1-4 The diagram shows a high-level tower with a self-supporting inclined guide eaves, comprising a self-supporting inclined guide eaves device and a high-level tower. The high-level tower includes a tower body 1, an air inlet 2, and a herringbone column 3. The height H of the tower body 1 is 80m, and the height H1 of the air inlet is 12m. The self-supporting inclined guide eaves device includes a guide eave 4 and a support column 5. The self-supporting inclined guide eaves device is arranged circumferentially around the tower, and the number of devices is 60. The guide eave 4 is installed at a certain height H2 above the air inlet 2 on the outer side of the tower body, where H2 is 2m, and the eave length extends from the tower body to the outer end. The guide eave 4 and the support column 5 are made of stainless steel. The support column 5 is fixed to the herringbone column 3 by a ring hoop, which is a semi-circular structure, and the ring hoops are fixed together by bolts.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention, and no reference numerals in the claims should be regarded as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high tower with self-supporting inclined wind deflector, comprising a self-supporting inclined wind deflector device and a high tower; the self-supporting inclined wind deflector device comprises a wind deflector and a support column, and is arranged circumferentially along the high tower to effectively eliminate the longitudinal vortex at the upper edge of the inlet of the tower, and to strengthen the local heat and mass transfer at the upper edge of the inlet of the tower; the high tower comprises a tower barrel, an inlet and an A-frame column; the height of the tower barrel is H, and H is in the range of 30m≤H≤150m; the height of the inlet is H1, and H1 is in the range of 5m≤H1≤25m; the A-frame column is used to support the tower body and the support column; the wind deflector is arranged obliquely above the inlet on the outside of the tower body, and the inner end of the wind deflector is fixed to the tower barrel, with a height of H2 above the inlet, and H2 is in the range of 0.4m≤H2≤5m; the wind deflector is installed horizontally downward, and forms an angle θ with the horizontal plane, and θ is in the range of 0<θ≤20°; the outer end of the wind deflector is vertically spaced apart from the ground by a height of H3, and H3≥H1; the support column is fixed to the A-frame column by a ring hoop; the support column is used to support the inclined wind deflector device; the support column forms an angle α with the vertical plane, and α is in the range of 20°≤α≤60°.

2. A high tower with self-supporting inclined wind deflecting roof according to claim 1, characterized in that: The self-supporting inclined wind deflector device is arranged obliquely circumferentially along the high tower, and the number of the self-supporting inclined wind deflector devices is N, and 1≤N≤100, N being an integer.

3. The high tower with self-supporting inclined fairing roof according to claim 1, characterized in that: The number of the support columns is M, and M≥2N, M being an integer.

4. The high tower with self-supporting inclined fairing roof according to claim 1, characterized in that: The material of the wind deflector is plated aluminum-zinc sheet, plated tin sheet, glass fiber reinforced plastic, stainless steel sheet, composite steel sheet, color-coated steel sheet or magnesium sheet; the material of the support column is stainless steel, plated zinc steel or aluminum-magnesium alloy.

Images