CN110514028A - Countercurrent Hyperbolic Cooling Tower - Google Patents

Abstract

The invention provides a countercurrent hyperbolic cooling tower, which includes a tower body, a V-shaped water eliminator, a water distribution tank for nozzles, a dispersed nozzle, a honeycomb rectifier, an air inlet, a water pipe entering the tower, and a sump; the V-shaped water eliminator is located on the side of the tower body Below; the nozzle distribution tank is located below the V-shaped water eliminator in the tower body; the dispersed nozzles are evenly distributed at the bottom of the nozzle distribution tank; the space between the nozzle distribution tank and the honeycomb rectifier is the heat exchange space for water droplets and air countercurrent contact; the nozzle distribution tank is below A honeycomb rectifier is provided; an air inlet is provided between the honeycomb rectifier and the sump, and the tower water pipe is located below the air inlet. The beneficial technical effect of the present invention is that the cooling effect is stable, and better, low maintenance, energy saving and environmental protection.

Description

Countercurrent Hyperbolic Cooling Tower

technical field

The invention relates to the field of circulating water cooling towers, in particular to countercurrent hyperbolic cooling towers.

Background technique

The cooling tower is to use circulating water to exchange heat after contact with air flow, and use the principles of steam heat dissipation, convective heat transfer and radiation heat transfer to dissipate the waste heat generated in the generator system of the power plant. The cooled water is lifted by the water pump to the heat exchange system. , to ensure the normal operation of the system.

The hyperbolic cooling towers in the existing technology at home and abroad widely use traditional fixed reflective nozzles and high-density fillers, and a variety of wave-shaped high-density filler hyperbolic cooling towers have appeared. From the perspective of development and use, the counterflow filler hyperbolic It is difficult to maintain and improve the cooling efficiency of cooling towers. When this type of cooling tower is running, the packing is prone to aging, scaling, and high resistance. Only hydrophilicity can maintain the cooling effect, and the operation and maintenance cost is high.

The countercurrent hyperbolic cooling tower of the present invention can ensure improved cooling efficiency during operation, and has low operation and maintenance costs.

Contents of the invention

The object of the present invention is to provide an energy-saving and environment-friendly countercurrent hyperbolic cooling tower with stable cooling effect, better and low maintenance.

According to one aspect of the present invention, a countercurrent hyperbolic cooling tower is provided, including a tower body, a V-shaped water eliminator, a nozzle water distribution tank, a dispersion nozzle, a honeycomb rectifier, an air inlet, a tower water pipe and a sump; Cylindrical structure, the V-shaped water eliminator is located at the bottom of the tower body; the nozzle water distribution tank is located under the V-shaped water eliminator in the tower body; the scattered nozzles are evenly distributed at the bottom of the nozzle water distribution tank; the nozzle water distribution tank is equipped with a honeycomb rectifier ; Between the water distribution tank of the nozzle and the honeycomb rectifier is a heat exchange space where water droplets and air are in countercurrent contact; there is a sump at the bottom of the tower body, and an air inlet is provided between the honeycomb rectifier and the sump, and the tower water pipe is located below the air inlet; The dispersing nozzle includes nozzles coaxially arranged from top to bottom, a first splash plate, a second splash plate and a water distribution head, the diameters of the first splash plate, the second splash plate and the water distribution head gradually decrease, and the first The center of the splash plate is provided with a first through hole, and the center of the second splash plate is provided with a second through hole. The diameters of the nozzle, the first through hole and the second through hole gradually decrease, and the edges of the first splash plate A plurality of first oblique water diversion teeth are distributed, and a plurality of second oblique water diversion teeth are evenly distributed on the edge of the second splash plate, and the first oblique water diversion teeth and the second oblique water diversion teeth are in opposite directions.

In some embodiments, the cross sections of the first oblique water dividing teeth and the second oblique water dividing teeth are both triangular. Therefore, the surface of the oblique water distributing tooth is a plane, and when the water flow hits it, it will be split into more water droplets, and the diffusion degree of the water sprayed from the splash plate in the longitudinal direction can be further improved.

In some embodiments, the bottom surface of the first oblique water separating tooth is parallel to the bottom surface of the first splash plate. Thus, the degree of splitting of the water flow after impacting the first oblique water separating teeth can be further improved.

In some embodiments, the bottom surface of the second oblique water-distributing tooth is parallel to the bottom surface of the second splash plate. Thus, the degree of splitting of the water flow after impacting the second oblique water separating teeth can be further improved.

In some embodiments, both the first splash tray and the second splash tray are cone structures.

In some embodiments, the first splash plate is located at the first through hole and is coaxially provided with a first nozzle toward the nozzle. As a result, the water sprayed from the first splash plate is divided into multiple layers, and the degree of diffusion of the water sprayed from the first splash plate in the longitudinal direction is further improved.

In some embodiments, the second splash plate is located at the second through hole and is coaxially provided with a second nozzle toward the nozzle. As a result, the water sprayed from the second splash plate is divided into multiple layers, and the degree of diffusion of the water sprayed from the second splash plate in the longitudinal direction is further improved.

In some embodiments, the water distribution head is a cone-shaped structure, and the side of the water distribution head is provided with a concave shoulder in the circumferential direction. Therefore, the water flow flowing down from the second through hole is split into smaller water droplets by the water dividing head and the shoulder, and the hollow phenomenon is reduced.

In some embodiments, a plurality of arc-shaped grooves are evenly distributed in the circumferential direction on the surface of the water separation head located below the shoulder. As a result, part of the water flow flows down from the arc-shaped groove, and rotates and splits, which can almost completely avoid the hollow phenomenon of spraying water from the nozzle and improve the heat exchange effect.

In some embodiments, a nozzle tube is inserted into the nozzle. Therefore, it can be applied to cooling towers of different sizes by inserting nozzle pipes of different diameters.

In some embodiments, the V-shaped water eliminator is composed of a plurality of V-shaped pieces arranged parallel to each other and fixed by connecting rods. It makes the water removal efficiency higher, the strength is high, it is not easy to deform, and the service life is longer than the traditional water eliminator.

In some embodiments, the honeycomb rectifier is made of multiple curved sheets and flat sheets bonded together to form a hexagonal honeycomb structure, which acts as an air guide, allowing the air flow to enter the tower cavity evenly without swirl flow, and the fine water droplets are Under the action of gravity, it evenly falls back to the honeycomb rectifier for secondary cooling and then falls into the sump; among them, multiple curved sheets are first bonded into multiple hexagonal honeycomb structures, and then multiple hexagonal honeycomb structures are bonded in turn. A flat sheet is inserted between two adjacent hexagonal honeycomb structures, the flat sheet can be bonded to the hexagonal honeycomb structure, and the flat sheet can increase the pressure bearing capacity of the honeycomb rectifier.

Description of drawings

Fig. 1 is the structural representation of countercurrent hyperbolic cooling tower of the present invention;

Fig. 2 is the structural representation of the V-shaped water eliminator of countercurrent hyperbolic cooling tower of the present invention;

Fig. 3 is the side view of the V-shaped water eliminator of countercurrent hyperbolic cooling tower of the present invention;

Fig. 4 is the perspective view of the dispersing nozzle of the present invention;

Fig. 5 is a structural schematic diagram of the first splash plate of the dispersion nozzle of the present invention;

Fig. 6 is a schematic structural view of the second splash plate of the dispersion nozzle of the present invention;

Fig. 7 is the top view of the water-distributing head of the dispersing nozzle of the present invention;

Fig. 8 is the side view of the water diversion head of the dispersing nozzle of the present invention;

Fig. 9 is the structural representation of the arrangement nozzle pipe of the dispersing spray head of the present invention;

Fig. 10 is the structural representation of the honeycomb rectifier of counterflow hyperbolic cooling tower of the present invention;

Fig. 11 is a cross-sectional view of the honeycomb rectifier of the counter-flow hyperbolic cooling tower of the present invention.

Detailed ways

The technical solution of the present invention will be described in further detail below in conjunction with specific embodiments.

As shown in Figure 1-11, the countercurrent hyperbolic cooling tower includes: tower body 1, V-shaped water eliminator 2, nozzle distribution tank 6, dispersed nozzle 9, honeycomb rectifier 11, air inlet 14, tower water pipe 4, maintenance Door 35 and sump 15.

The tower body 1 is a large-scale tower body structure, specifically, a fan-shaped structure. In actual construction, suitable materials can be selected as the material of the tower body according to different requirements of the builder. In some embodiments of the present invention, when a large tower needs to be built, the tower body is made of concrete; when a medium-sized tower needs to be built, the tower body is made of fiberglass.

The V-shaped water eliminator 2 is located in the middle and lower part of the tower body 1, and is located above the nozzle water distribution tank 6 in the tower. The V-shaped water eliminator 2 can be fixed on the inner wall of the tower body 1 through the frame. The V-shaped water eliminator 2 is composed of A plurality of V-shaped pieces 21 are arranged parallel to each other, and are fixed by connecting rods 22 . Specifically, the connecting rods 22 break through each V-shaped piece 21 to fix it. There is a space between the dispersing nozzle 9 and the honeycomb rectifier 11, which provides a heat exchange space for the fine water droplets ejected from the dispersing nozzle to contact with the unsaturated air for heat exchange; the nozzle water distribution tank can be fixedly installed in the middle and lower part of the tower through the bracket , and located below the V-shaped water eliminator, the nozzle distribution tank 6 is fixedly installed on the inner wall of the tower body 1. In this embodiment, a plurality of dispersing nozzles 9 can be provided, and the dispersing nozzles 9 are fixedly installed at the bottom of the nozzle water distribution tank 6 and distributed uniformly.

Dispersing spray head comprises the nozzle 91 that is coaxially arranged from top to bottom, the first splash plate 92, the second splash plate 93 and the water distribution head 94, and nozzle 91 can be flange-connected to shower head distribution tank 6, and nozzle 91, the first splash plate The water pan 92 , the second splash pan 93 and the water diversion head 94 can be fixedly connected in sequence through connecting arms.

The diameters of the first splash pan 92 , the second splash pan 93 and the water distribution head 94 gradually decrease. The center of the first splash plate 92 is provided with a first through hole 921, and the center of the second splash plate 93 is provided with a second through hole 931. The diameters of the nozzle 91, the first through hole 921 and the second through hole 931 are gradually reduced. Small. Thus, the water sprayed by the nozzle can be sputtered on the first splash plate 92, the second splash plate 93 and the water distributor 94 in sequence, split into a large number of small water droplets, and improve the heat exchange effect between the water droplets and the air .

The edge of the first splash plate 92 is evenly distributed with a plurality of first oblique water dividing teeth 922, and the edge of the second splash plate 93 is evenly distributed with a plurality of second oblique water dividing teeth 932. The first oblique water dividing teeth 922 The direction is opposite to that of the second oblique water separating teeth 932 . Wherein, in one embodiment, when viewed from the nozzle 91 toward the water distribution head 94 , the first oblique water distribution tooth 922 is a right-handed deflection, and the second oblique water distribution tooth 932 is a left-handed deflection. In another embodiment, when viewed from the nozzle 91 toward the water distribution head 94 , the first oblique water distribution tooth 922 is left-handed, and the second oblique water distribution tooth 932 is right-handed.

Thus, by setting the first oblique water-distributing teeth and the second oblique water-distributing teeth in opposite directions, the diffusion degree of the water sprayed from the splash plate in the longitudinal direction can be improved, so that each splash plate The sprayed water is divided into multiple layers, which can improve the separation of the water sprayed by the nozzle into more small water droplets per unit time, and the sprayed water droplets are more uniform, which increases the contact area between water and air, and greatly improves the cooling tower. heat transfer efficiency.

The cross sections of the first oblique water dividing teeth 922 and the second oblique water dividing teeth 932 are both triangular. Therefore, the surface of the oblique water distributing tooth is a plane, and when the water flow hits it, it will be split into more water droplets, and the diffusion degree of the water sprayed from the splash plate in the longitudinal direction can be further improved.

The bottom surface of the first oblique water distributing tooth 922 is parallel to the bottom surface of the first splash plate 92 . Thus, the degree of splitting of the water flow after impacting the first oblique water separating teeth can be further improved.

The bottom surface of the second oblique water distributing tooth 932 is parallel to the bottom surface of the second splash plate 93 . Thus, the degree of splitting of the water flow after impacting the second oblique water separating teeth can be further improved.

Both the first splashing pan 92 and the second splashing pan 93 are cone structures.

The first splash plate 92 is located at the first through hole 921 and coaxially formed with a first nozzle 923 towards the nozzle 91 . As a result, the water sprayed from the first splash plate is divided into multiple layers, and the degree of diffusion of the water sprayed from the first splash plate in the longitudinal direction is further improved.

The second splash plate 93 is located at the second through hole 931 and coaxially formed with a second nozzle 933 towards the nozzle 91 . As a result, the water sprayed from the second splash plate is divided into multiple layers, and the degree of diffusion of the water sprayed from the second splash plate in the longitudinal direction is further improved.

The water distribution head 94 has a conical structure, and the side of the water distribution head 94 is integrally formed with a concave shoulder 941 in the circumferential direction. Therefore, the water flow flowing down from the second through hole is split into smaller water droplets by the water dividing head and the shoulder, and the hollow phenomenon is reduced.

In one embodiment, a plurality of grooves 942 may be evenly distributed in the circumferential direction of the surface of the water diversion head 94 below the shoulder 941, and the grooves 942 shall be dug on the surface of the water diversion head 94. The grooves 942 may be linear, Can also be curved. When arc-shaped, each arc-shaped groove 942 is biased in the same direction, which can be clockwise or counterclockwise. As a result, part of the water flows down from the arc-shaped groove, which can prevent the water from jumping on the water distribution head, rotate and split, and can almost completely avoid the hollow phenomenon of the water sprayed by the nozzle, and improve the heat exchange effect.

When in use, water is sprayed from the nozzle 91 , a part of the water hits the first splash plate 92 , and is splashed and diffused into a large number of small water droplets, and another part of the water flows from the first through hole 921 to the second splash plate 93 . Of the water flowing out from the first through hole 921 , part of the water hits the second splash plate 93 , sputters and diffuses into a large number of small water droplets, and another part of the water flows from the second through hole 931 to the water distribution head 94 . A part of the water flow flowing down from the second through hole 931 is split into smaller water droplets by the water diversion head and the shoulder, and another part of the water flow flows down from the groove and rotates to split.

In addition, in one embodiment, a water sprinkling end 95 is provided at the bottom of the water diversion head 94, and the water sprinkling end 95 has an inverted cone-shaped structure, and the water sprinkling end 95 can be integrated with the water diversion head 94. In addition, the water sprinkling end 95 A plurality of annular corner grooves 951 are sequentially provided on the side surface of the shaft along the axial direction. In this embodiment, 93 annular corner grooves 51 are provided. The side of the annular corner groove 951 is an angular structure in cross section. As a result, part of the water flowing down from the groove 942 is split into small water droplets by the annular corner groove 951 step by step, so that the nozzle can spray water without hollow phenomenon, and the heat exchange efficiency between water and air can be improved.

In addition, as shown in FIG. 9 , a nozzle pipe 96 is inserted into the nozzle 91 . Therefore, it is applicable to cooling towers of different sizes by inserting nozzle pipes 96 of different diameters, and the size of the nozzle pipes can be adapted to flow rates of 6 tons per hour, 8 tons per hour or 10 tons per hour.

A honeycomb rectifier 11 is provided below the dispersing nozzle 9, and the honeycomb rectifier 11 can be fixedly installed in the tower body 1 by a honeycomb rectifier frame. Curved pieces and flat pieces are glued together, and the honeycomb rectifier 11 is evenly covered on the entire honeycomb rectifier frame, which can make the air flow enter the tower cavity evenly without eddy current, increase the relative flow velocity of the gas-liquid contact area, and disperse the nozzle 9 The sprayed fine water droplets do not agglomerate, the water droplets fall evenly, and fully exchange heat with the unsaturated air. Below the honeycomb rectifier frame 11 is an air inlet 14, the air inlet 14 can be opened in the tower body 1, and the water collection pool 15 is arranged in the land under the tower body 1.

When the water flow is ejected through the dispersing nozzle, the water flow is cracked and refined into numerous fine water droplets, which increases the contact area with the unsaturated air. And deflection, which is beneficial to the heat and mass exchange of water vapor, speeds up the cooling speed of water droplets. When the tiny water droplets are injected, they flow countercurrently to the honeycomb rectifier under the action of gravity, and fall into the sump after secondary cooling. The continuous deflection of the airflow in the tower cavity increases the relative flow velocity of the gas-liquid contact area, strengthens the heat exchange efficiency, and thus discards the filler.

When the cooling tower is running, the saturated humid air in the tower is mixed with many small water droplets. The V-shaped water eliminator has a unique multi-dimensional space with its approach, and the ventilation resistance is small. The problem of increasing circulating water consumption outside the tower avoids environmental pollution, improves the unstable factors of the flow state in the tower cavity, and further improves the water removal efficiency.

It also includes an anti-wall flow plate. One side of the anti-wall flow plate is connected to the inner wall of the tower body 6 and is located at the lower edge of the honeycomb rectifier 11. The anti-wall flow plate and the side wall of the tower body 6 form an angle of 30-60°. In this embodiment, the anti-wall flow plate The plate forms an angle of 40° with the 6 side walls of the tower body.

The countercurrent hyperbolic cooling tower of the present invention works like this: the pump of the circulating water system is turned on, and the high-temperature water in the sump 15 is sent to the dispersing nozzle 9 through the tower water pipe, and then sprayed out through the nozzle 91 to disperse into water droplets that are uniform and Small, so that it can fully exchange heat with the unsaturated air entering through the honeycomb rectifier 11; the fine water droplets ejected from the dispersing nozzle 9 evenly fall to the honeycomb rectifier 11 under the influence of gravity and uniform air flow for secondary cooling, and fall into the collector. After the water pool 15, the cooled circulating water is output by the water pump to each heat exchange equipment, and then returns to the cooling tower for repeated cycle use.

It should be understood that although the description is described according to the embodiments, not each embodiment only includes an independent technical solution, and this description of the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. All equivalent embodiments or changes that do not depart from the present invention should be Included within the protection scope of the present invention.

Claims (6)

1. The countercurrent hyperbolic cooling tower is characterized in that it comprises a tower body, a V-shaped water eliminator, a nozzle distribution tank, a dispersed nozzle, a honeycomb rectifier, an air inlet, a tower water pipe and a sump; Cylindrical structure, the V-shaped water eliminator is located below the inside of the tower body; the nozzle water distribution tank is located below the V-shaped water eliminator in the tower body; the dispersed nozzle is evenly distributed at the bottom of the nozzle water distribution tank Staggered distribution; the honeycomb rectifier is arranged under the sprinkler water distribution tank; the heat exchange space where water droplets and air countercurrently contact is between the sprinkler water distribution tank and the honeycomb rectifier; the water collection pool is provided at the bottom of the tower body , the air inlet is provided between the honeycomb rectifier and the sump, and the tower water pipe is located below the air inlet; The dispersing spray head comprises nozzles (91) coaxially arranged from top to bottom, a first splash plate (92), a second splash plate (93) and a water dividing head (94), and the first splash plate (92) 1. The diameters of the second splash plate (93) and the water diversion head (94) gradually decrease, the center of the first splash plate (92) is provided with a first through hole (921), and the second splash plate (93) The center is provided with a second through hole (931), the diameters of the nozzle (91), the first through hole (921) and the second through hole (931) gradually decrease, and the first splash plate (92) There are a plurality of first oblique water dividing teeth (922) evenly distributed on the edge, and a plurality of second oblique water dividing teeth (932) are evenly distributed on the edge of the second splash plate (93), and the first An oblique water distributing tooth (922) is opposite to the second oblique water distributing tooth (932). 2. The counterflow hyperbolic cooling tower according to claim 1, characterized in that, the first splash plate (92) is located at the first through hole (921) and is coaxially provided with a second nozzle (91) toward the nozzle (91). A nozzle (923). 3. The counterflow hyperbolic cooling tower according to claim 1, characterized in that, the second splash plate (93) is located at the second through hole (931) and is coaxially provided with a first nozzle (91) towards the nozzle (91). Two nozzles (933). 4. The countercurrent hyperbolic cooling tower according to claim 1, characterized in that, the water diversion head (94) is a conical body structure, and the side of the water diversion head (94) is circumferentially provided with a concave shoulder (941 ). 5. The counter-flow hyperbolic cooling tower according to claim 4, characterized in that, the surface of the water dividing head (94) located below the shoulder (941) is circumferentially evenly distributed with a plurality of grooves (942) . 6. The counter-flow hyperbolic cooling tower according to claim 1, characterized in that, a nozzle pipe (96) is inserted in the nozzle (91).