WO2008106867A1

WO2008106867A1 - A polygonal countercurrent type cooling tower

Info

Publication number: WO2008106867A1
Application number: PCT/CN2008/000443
Authority: WO
Inventors: Kam Ming Wong
Original assignee: Kam Ming Wong
Priority date: 2007-03-06
Filing date: 2008-03-06
Publication date: 2008-09-12

Abstract

A polygonal countercurrent type cooling tower is composed of a tower body (11), an air duct (12) connected with the upper part of the tower body (11) and a water storage basin (13) connected with the bottom of the tower body (11). A blower (22) and a motor device (23) are installed in the air duct (12), and a center throat (15) and a water spraying device connected with it are set in the tower. A filler (14) is set below the water spraying device, and the tower body (11) has a polygonal prism structure formed by connecting multiple glass fibre side boards (111).

Description

Polygonal counterflow cooling tower

The present invention relates to a cooling tower apparatus, and more particularly to a tower structure of a counterflow cooling tower. Prior art prior to the present invention

The traditional square counterflow cooling tower generally adopts a tower structure constructed of a metal steel frame, and then surrounds a layer of fiberglass board outside the metal steel frame. Although the tower of this structure has been widely used in the industry, there are still many shortcomings and defects in the tower:

First, the steel frame of the tower body requires a large amount of metal material, and as the cooling tower volume increases, more steel is used. The fiberglass board on both sides of the steel frame body is a single-layer fiberboard, which is fixed on both sides of the steel frame by self-tapping screws to protect and seal the tower body, and does not bear the weight of the tower body itself. Moreover, the self-tapping screws will damage the silver-zinc layer on the surface of the steel frame and cause corrosion. When the cooling tower is working, a large amount of water vapor passes through the tower body, and the steel frame body is exposed to the environment for a long time, and is easily eroded by the cooling water, causing rust and the like. Moreover, the inner side surface of the single-layer glass fiber board is rough, and it is easy to breed bacteria or microorganisms.

When the traditional square (quadrilateral) counterflow cooling tower is used in multiple sets, the tower body in the middle position is blocked by the air inlets on both sides, resulting in the original air intake area of the tower body being reduced (50%), in order to ensure that the cooling tower has With sufficient air inlet area, the traditional method is to increase the air inlets on the other two sides of the tower body, thus resulting in an increase in the height of the improved tower body, an increase in volume, and a decrease in stability.

According to the working principle of the counter-flow cooling tower, in the heat exchange process of the cooling tower, the flow direction of the airflow is from the air inlet at the bottom of the tower body, and passes through the packing layer (the airflow is opposite to the direction of the water flow in the packing layer), and is output by the air cylinder. . Traditional square (quadrilateral) cooling towers during heat exchange, due to bottom air inlet

-1 - Confirm this The distance between the mouth and the center of the tower body is different. The middle part of the air inlet of the tower body is closer to the center of the tower body, and the corner (ie, the intersection of the two sides) is far from the center of the tower body, thus causing the above two air inlets. The airflow is different in size. Usually the airflow at the corner is weak. If a strong airflow is required at the corner, the operating load of the fan and the motor is increased.

The Chinese utility model patent CN 2177926Y, published on September 21, 1994, discloses an ultra-low noise combined counterflow FRP cooling tower. Although the octagonal tower structure is disclosed, the tower body is divided into upper and lower towers. The tower body is provided with an inlet screen between the upper and lower towers, and the inlet screen protrudes from the upper and lower towers, and the upper and lower towers and the inlet screen respectively form an inner octagonal structure and outer octagonal Shape structure. The drawback is that the tower has more components and the assembly time of the tower is longer.

In the vertical direction, the traditional square counterflow cooling tower usually requires a large amount of steel to manufacture the steel frame of the tower body. A large number of screws or screws are used to fix and connect the fiberglass board, and a such cooling tower is completely assembled, which is not only difficult to assemble, but also processed. The production cost is high and transportation is not convenient. Purpose of the invention

It is an object of the present invention to provide a polygonal counterflow cooling tower which is simple in structure and easy to assemble.

Technical solution adopted by the invention

The technical solution adopted by the present invention is: a polygonal counterflow cooling tower, comprising a tower body, wherein the tower body is composed of a tower body, a wind pipe connected to the upper part of the tower body, and a water storage basin connected to the bottom of the tower body; The fan is equipped with a fan and a motor device, the tower body is provided with a central throat and a water mixing device connected thereto, and a packing is arranged under the watering device; the tower body is a polygon surrounded by a glass fiber side plate Prismatic structure.

The upper portion of the central throat is connected to the motor mounting bracket above it via a support frame, the motor Both ends of the mounting bracket are fixed in the grooves on both sides of the air cylinder. The motor is mounted below the fan.

The water-discharging device comprises a T-shaped water pipe and a water distribution pipe connected thereto, and the two ends of the T-shaped water pipe are fixed on the inner wall of the side plate of the tower body, and the water inlet is connected to the central throat.

The present invention may also adopt the following technical solution: a polygonal counterflow cooling tower comprising a tower body, the tower body being composed of a tower body, a wind cylinder connected to the body of the tower, and a water storage basin connected to the bottom of the tower body; a fan and a motor device are installed in the air cylinder, a central throat and a water mixing device connected thereto are arranged in the tower body, and a filler is arranged under the watering device; the tower body is surrounded by a glass fiber side plate a polygonal prism structure; an upper portion of the central throat is connected to a motor mounting frame therethrough via a support frame for supporting the weight of the fan and the motor device; both ends of the motor mounting bracket are fixed on both sides of the air cylinder, The horizontal position of the fan and the motor device is fixed; the filler is placed on the filler bracket, the bottom of the filler bracket is supported by the diagonal support, and the outer end of the filler bracket is connected with the glass fiber side panel.

The upper portion of the glass fiber side panel is bonded by two layers of glass fiber sheets, the outer layer of which is a plate body having a continuous uneven structure, and the inner layer is a flat plate.

The lower portion of the side wall of the glass fiber is provided with an air inlet window, and the outlet of the air inlet window is provided with a baffle extending obliquely downward.

The above tower body may be a hexagonal prism, or an octagonal prism, or a hexagonal prism. The number of side bodies of the polygonal prism increases as the cooling tower increases.

The upper end of the diagonal bracing of the bottom of the filler bracket is connected with the filler bracket, and the lower end is connected with the central throat or the bottom of the water storage basin. Compared with the conventional counterflow cooling tower, the present invention has the following remarkable features:

(1) The tower body of the present invention is completely enclosed by glass fiber side plates, completely eliminating the traditional cold The steel frame structure in the tower not only saves a lot of metal materials, but also reduces the production cost, and because the glass fiber has stronger corrosion resistance, it will not be eroded by the cooling water.

(2) The upper part of the glass fiber side plate is made of two layers of glass fiber board. The outer layer is a plate body with continuous concave and convex structure. The inside is flat plate. It has strong hardness and load carrying capacity. The quality is better than that of metal steel. The light weight reduces the weight of the entire cooling tower body and reduces the transportation cost. Moreover, the inner and outer surfaces of the glass fiber side plate are smooth surfaces, which are not easy to breed bacteria or microorganisms, and are convenient for cleaning. The lower part of the glass fiber side plate is provided with an air inlet window, and the outlet of the air inlet window is provided with a downwardly extending baffle plate, which can block sunlight, prevent direct sunlight from entering the tower body, and inhibit the growth of moss in the tower body. Preventing debris from falling into the tower body, etc., can also guide the airflow from bottom to top into the tower body, making the air circulation more smooth.

(3) The tower body of the present invention can be fabricated into any polygonal prism structure as needed, such as a hexagonal prism, an octagonal prism or a hexagonal prism, and the number of side bodies of the polygonal prism increases with the volume of the cooling tower. increase. The more the number of prisms, the stronger the force; and the large cooling tower with multi-prisms, the area of each side plate is not too large, easy to transport and carry. The advantage of this polygonal prism structure is that it facilitates the combined assembly of the counterflow cooling tower. When multiple sets of cooling towers are assembled together, the area of the air inlet which is blocked by the middle tower body is reduced, for example, when the octagonal cooling tower is assembled. After blocking the air inlets on the two sides, there are 6 other side (75% of the air inlet area). The air inlet can enter the air, so it is not necessary to increase the area of the other air inlets to compensate for the reduction. The inlet area is beneficial to reduce the height of the tower and increase its stability. 2 The polygonal prism structure can reduce the distance between the bottom air inlet of the tower body and the center of the tower body, especially the distance from the center of the tower body, which is beneficial to reduce the operating load of the fan and the motor and improve the cooling efficiency. 3 Usually the cooling tower is installed in an open place, when encountering strong winds or typhoons, The side surface of the conventional square cooling tower is relatively large in wind area, so the wind resistance is also large. However, the side of the tower structure of the polygonal prism of the present invention has a small wind receiving area, so that the wind resistance can be reduced and the wind is attacked. . Moreover, as the number of sides of the cooling tower increases, the above effects are more pronounced.

(4) The tower structure of the present invention adopts a reasonable mechanical distribution structure, and distributes the weight of the tower body (including the fan and the motor at the top of the tower body) on the central throat and the glass fiber side plate; meanwhile, the filler bracket and the side are utilized. The connection structure of the board makes the lateral structure of the whole tower body more stable. The above structure makes the tower body evenly stressed, and the conventional steel frame body is omitted, which simplifies the tower structure of the cooling tower.

(5) Compared with the patent CN 2177926Y described in the background art, the tower body of the present invention adopts a polygonal prism structure surrounded by glass fiber side plates, thereby eliminating the steel frame structure of the conventional cooling tower and reducing the cooling tower. The number of assembled components makes the structure simpler and easier to assemble.

In summary, the invention changes the tower structure of the conventional cooling tower, omits the steel frame structure in the original square counterflow cooling tower, and saves a large number of steel and connecting screws, screws and the like. Not only is the production cost low, but the assembly is simple and the transportation is convenient, which can greatly shorten the assembly time. DRAWINGS

1 is a schematic structural view of a tower body according to the present invention;

Figure 2 (a) is a plan view of the tower body of the present invention;

2(b) and 2(c) are enlarged views of the structures of parts I and II in Fig. 2(a);

3(a) and 3(b) are schematic diagrams showing the internal structure of the tower body of the present invention;

Figure 4 (a) is a schematic view showing the connection structure of the filler frame and the glass fiber side plate;

Figure 4 (b) is an exploded enlarged view of a portion III in Figure 4 (a);

Figure 5 (a) is a schematic structural view of a side wall of a glass fiber according to the present invention;

5(b) and 5(c) are partial AA and BB cross-sectional views of Fig. 5(a); 6(a) and 6(b) are schematic views showing the assembled structure of a plurality of cooling towers according to the present invention. Example

As shown in FIG. 1, FIG. 3(a:) and FIG. 3(b), the polygonal counterflow cooling tower of the present invention comprises a tower body 1, and the tower body 1 is connected to the body of the tower by a tower body 11. The air duct 12 is composed of a water storage tank 13 connected to the bottom of the tower body. Wherein: two sides of the air cylinder 12 are provided with a recess 121 for fixing the motor mounting bracket, and the motor mounting bracket 21 is mounted with a fan 22 and a motor 23, and when installed, the two ends of the motor mounting bracket 21 are placed in the In the recess 121 on both sides of the air cylinder, the middle portion of the motor mount 21 is connected to the center throat 15 via a support frame 24, and the motor 23 is mounted on the motor mount 21 and placed under the blower 22.

A central throat 15 is disposed in the tower body 1. The upper end of the central throat 15 is connected to the water inlet of a T-shaped water pipe 16, and the two ends of the T-shaped water pipe 16 are fixed on the inner side walls of the pair of side plates of the tower body 11, The water distribution pipe 16 is also connected to a plurality of water distribution pipes to form a water distribution device. A packing 14 is disposed under the watering device, and the packing 14 is placed on the packing bracket 17, and the packing bracket 17 is fixedly connected to the lower portion of the center throat 15 through the bracing 18 (as shown in Fig. 3(a)). The bracket 17 can also be fixedly connected to the bottom of the water storage tank 13 via the braces 18 (as shown in Fig. 3(b)). The outer end of the filler bracket 17 is connected to the side plate 111. As shown in Figures 4(a) and 4(b), the outer end of the filler bracket 17 is connected to the joint of the two side plates by screws, and the filler bracket 17 is used. The side panels 111 of the tower body are tensioned and secured such that their side panels are sufficient to support the weight of the tower body. The bottom of the water storage tank 13 is designed with a horizontal (in-line) central cylinder, and a water inlet 19 is opened on one side of the central cylinder, and the lower end of the central throat 15 is connected to the water inlet pipe via the curved throat and the transverse throat. The upper portion of the center throat 15 is connected to the motor mounting bracket 21 through a support frame. The motor mounting bracket 21 of the present invention adopts an under-mounting structure in which a majority of the weight is supported by the center throat 15 and a part of the weight is dispersed in the side plate 111 of the tower body. on. In order to strengthen the bearing capacity of the side panels, two adjacent glass fibers The joint of the side plates can be spliced with a flat iron, so that the side plates of the tower body have sufficient bearing capacity to bear the weight of the fan and the motor at the top of the tower body.

The main feature of the present invention is that the tower body 11 is surrounded by a plurality of glass fiber side plates 111 and has a polygonal prism structure. The tower body 11 may be a hexagonal prism, or an octagonal prism, or a hexagonal shape. The prism, the number of side bodies of the polygonal prism increases as the cooling tower increases. As shown in Fig. 2(a), the octagonal prism structure is formed, and the side edges of the glass fiber side plates 111 are bent to form an L-shaped folded edge, and the L-shaped folded edges of the adjacent two side plate joints are mutually engaged and then passed. The screws 118 are connected, as shown in Figs. 2(b:) and 2(c), which are enlarged views of the structures of the parts I and II in Fig. 2(a). 2(b) is a fastening diagram of two side panels installed side by side. In order to enhance the vertical supporting force of the glass fiber raft, a flat iron 117 may be connected to one side of one of the side panels. One end of the filler holder 17 is inserted between the two glass fiber side plates 111 (as shown in Fig. 4(b)), and the side plate 111, the filler holder 17, and the flat iron 117 are joined together by screws 118. Fig. 2(c) is a schematic view of the fastening of the side plates at the corner of the tower body. Since the supporting force at the corner of the tower body is strong, the flat iron may not be connected.

As shown in Fig. 5 (a), the upper portion of the glass fiber side panel 111 is bonded by two layers of glass fiber sheets. As shown in Fig. 5(b), the outer layer is a plate body 112 having a continuous concave-convex structure, the inner layer is a flat plate 113, and the outer surface of the outer layer plate body 112 and the inner surface of the inner layer plate body 113 are smooth surfaces. It can effectively prevent bacterial growth and facilitate cleaning. As shown in Fig. 5(c), a hurricane window 114 is provided at a lower portion of the glass fiber raft 111, and a baffle 115 extending obliquely downward is provided at an exit of the inlet window 114. Further, the lower end of the inner plate 113 of the side panel is bent inwardly to form a water deflector 116 which prevents water flowing from the inner flat plate 113 from flowing to the outside of the tower.

Figure 6 (a) shows the structure of the assembly of multiple cooling towers. The contact side area of the two adjacent cooling towers is smaller than that of the traditional square cooling tower. The other six sides (75% of the inlet area) ) The air inlet can enter the wind. Alternatively, as shown in Fig. 6(b), a certain space may be left between the adjacent two cooling towers for air circulation, and a ladder frame may be installed between the two towers. This eliminates the need to increase the area of the air inlets on the other sides to compensate for the reduced air inlet area, which is advantageous for reducing the height of the tower body and increasing its stability.

The working principle of the invention is the same as that of the conventional cooling tower, except that it saves the steel frame structure in the conventional cooling tower, so that a large amount of steel can be saved, and the motor mounting frame and the motor are omitted after the original steel frame structure is omitted. Most of the weight of the fan and the fan are led to the ground through the central throat, and the other part is weighted by the tower of the polygonal prism, which is very stable.

In summary, the present invention provides a new counterflow cooling tower structure which is not only low in manufacturing cost, but also simple in assembly and convenient in transportation, and can greatly shorten assembly time, compared with a conventional cooling tower.

Claims

Rights request

A polygonal counterflow cooling tower comprising a tower body (1), the tower body (1) being connected to a wind tunnel (12) connected to the body of the tower by a tower body (11), and connected to the bottom of the tower body a water storage basin (13) is arranged; a fan and a motor device are installed in the air cylinder (12), and a central throat (15) and a water mixing device connected thereto are arranged in the tower body (1), and are arranged under the watering device There is a filler (14); characterized in that the tower body (11) is a polygonal prism structure surrounded by a glass fiber side plate (111).

2. The polygonal counterflow cooling tower according to claim 1, wherein an upper portion of the central throat (15) is connected to a motor mounting frame therethrough via a support frame, and both ends of the motor mounting bracket are fixed to the air cylinder Inside the grooves on both sides.

3. The polygonal counterflow cooling tower according to claim 1, wherein the motor is mounted below the fan.

4. The polygon counterflow cooling tower according to claim 1, wherein the water sowing device comprises a T-shaped water pipe, and a water distribution pipe connected thereto, wherein both ends of the T-shaped water pipe are fixed to the tower body (11) On the inner wall of the side panel, the water inlet is connected to the central throat.

5. A polygonal counterflow cooling tower comprising a tower body (1), the tower body (1) being connected by a tower body (11), a duct (12) connected to the body of the tower, and a bottom connected to the bottom of the tower body. a water storage basin (13) is arranged; a fan and a motor device are installed in the air cylinder (12), and a central throat (15) and a water mixing device connected thereto are arranged in the tower body (1), and are arranged under the watering device Filler (14); characterized by:

The tower body (11) is a polygonal prism structure surrounded by a glass fiber side plate (111); the upper part of the center throat (15) is connected to the motor mounting frame above it through a support frame, Supporting the weight of the fan and motor unit;

The two ends of the motor mounting bracket are fixed to two sides of the air cylinder (12) for fixing the horizontal position of the fan and the motor device;

The filler (14) is placed on a filler support, the bottom of the filler support is supported by a diagonal support, and the outer end of the filler support is joined to the fiberglass side panel (111).

The polygonal counterflow cooling tower according to claim 1 or 5, wherein the upper portion of the glass fiber side plate (111) is bonded by two layers of glass fiber sheets, and the outer layer has a continuous concave-convex structure. The plate body and the inner layer are flat plates.

The polygon counterflow cooling tower according to claim 1 or 5, wherein a lower portion of the glass fiber side plate (111) is provided with an inlet window, and an outlet of the inlet window is obliquely extended downward. Baffle.

The polygonal counterflow cooling tower according to claim 1 or 5, wherein the tower body

(11) may be a hexagonal prism, or an octagonal prism, or a hexadecimal prism.

9. The polygonal counterflow cooling tower according to claim 1 or 5, wherein the number of side bodies of the polygonal prism increases as the cooling tower increases.

The polygonal counterflow cooling tower according to claim 1 or 5, wherein the upper end of the diagonal bracing of the bottom of the packing bracket is connected to the filling bracket, and the lower end is connected to the central throat or the bottom of the water storage basin.