CN217844814U

CN217844814U - High-temperature type counter-flow cooling tower

Info

Publication number: CN217844814U
Application number: CN202221504961.2U
Authority: CN
Inventors: 戴聪; 吴加胜; 傅立新; 汪迪文; 彭博
Original assignee: Hunan Yuanheng Technology Co ltd
Current assignee: Hunan Yuanheng Technology Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-11-18
Anticipated expiration: 2032-06-15

Abstract

The utility model discloses a high-temperature counter-flow cooling tower, belonging to the technical field of cooling towers, comprising a tower body, wherein the tower body is internally provided with filler, the top end of the tower body is provided with a fan system, and the bottom of the tower body is provided with a water collecting basin; a self-circulation water distribution pipe is arranged above the filler; an outer water distribution pipe is arranged above the self-circulation water distribution pipe; self-circulation branch pipes are arranged on two sides of the self-circulation water distribution pipe; outer branch pipes are arranged on two sides of the outer water distribution pipe; the bottom parts of the self-circulation branch pipe and the external branch pipe are provided with spray heads; the outer water distribution pipe is connected with an external cooled device; the self-circulation water distribution pipe is communicated with the water collecting basin through a circulation pipeline; and a water pump is arranged on the circulating pipeline. The utility model is used for the counterflow cooling tower heat dissipation when the inflow temperature is higher, the inhomogeneous water distribution that the inflow flow reduced to the high temperature resistance of filler and high temperature time that leads to when intaking to the cooling tower high temperature.

Description

High-temperature type counter-flow cooling tower

Technical Field

The utility model belongs to the technical field of the cooling tower, specifically be a high temperature type counterflow cooling tower.

Background

As shown in fig. 1, a general counter-flow cooling tower includes a packing, a tower body, an external circulation water distribution system, an air draft system, and the like. The filler is generally made of PVC and generally resists temperature below 60 ℃. When the cooling tower is used for cooling process equipment, the temperature of the outlet water of a cooling system of the process equipment is higher than 60 degrees sometimes and even reaches 90 degrees sometimes, and after high-temperature water enters the cooling tower, the filler needs to be changed from a PVC material to a PP material so as to achieve temperature resistance. When the temperature of water entering the cooling tower is high, the water outlet temperature of the general cooling tower is lower from the economical point of view, namely the temperature difference of the inlet water and the outlet water is increased. Generally, the national standard cooling working condition of a normal cooling tower is 5 degrees of temperature difference, while the temperature difference under the working condition of high-temperature water inlet can reach more than 10 degrees, even more than 20 degrees, and the processing flow of the cooling tower is reduced due to overlarge temperature difference, for example, when the cooling tower is used for processing the 5 degrees of temperature difference of 100m3/h, the processing flow can be reduced to 50m3/h under the same cooling load when the 10 degrees of temperature difference is processed. Along with the increase of the temperature difference, the heat dissipation capacity of the cooling tower is increased under the condition that the wet bulb temperature is not changed according to the working condition curve of the cooling tower. When the shape selection curve of the cooling tower is applied, the treatment flow rate is actually reduced to be less than 50m < 3 >/h, so that the actual temperature difference is further increased. For the same cooling tower, the low flow rate can cause the drop of the water spraying density of the cooling tower under the same section, namely the cooling water on the section area of the filler of 1m2 can be reduced, for example, the water spraying density of 20 (m 3/h)/m 2 can be reduced to 10 (m 3/h)/m 2 normally, therefore, the water spraying on the filler can cause the uneven water film on the surface of the filler due to the reduction of the water spraying density, some position water quantity is large, some position water quantity is small, the heat radiation performance of the cooling tower is reduced, therefore, the model selection allowance of the cooling tower needs to be enlarged during the model selection, and the economy of the cooling tower is reduced.

SUMMERY OF THE UTILITY MODEL

To above problem, the utility model provides a high temperature type counterflow cooling tower for counterflow cooling tower heat dissipation when the temperature of intaking is higher, the inhomogeneous water distribution that the inflow flow reduced to the high temperature resistance of filler and high temperature time water inflow that leads to when intaking to the cooling tower high temperature reduces and leads to.

In order to achieve the above object, the utility model adopts the following technical scheme: a high-temperature type counter-flow cooling tower comprises a tower body, wherein filler is arranged in the tower body, a fan system is arranged at the top end of the tower body, and a water collecting basin is arranged at the bottom of the tower body; a self-circulation water distribution pipe is arranged above the filler; an outer water distribution pipe is arranged above the self-circulation water distribution pipe; self-circulation branch pipes are arranged on two sides of the self-circulation water distribution pipe; outer branch pipes are arranged on two sides of the outer water distribution pipe; the bottom parts of the self-circulation branch pipe and the external branch pipe are provided with spray heads; the outer water distribution pipe is connected with an external cooled device; the self-circulation water distribution pipe is communicated with the water collecting basin through a circulation pipeline; and a water pump is arranged on the circulating pipeline.

As a further improvement of the technical scheme: the external branch pipes are positioned above the corresponding self-circulation branch pipes and are arranged in parallel with the external branch pipes.

As a further improvement of the above technical solution: and the bottom spray head of the external branch pipe is positioned above the bottom spray head of the self-circulation branch pipe.

As a further improvement of the above technical solution: the bottom of the water collecting basin is connected with a water collecting tank; the water collecting tank is communicated with the inlet of the water pump through a connecting pipe; and the outlet of the water pump is communicated with a circulating pipeline.

As a further improvement of the above technical solution: the bottom of the self-circulation branch pipe and the bottom of the external branch pipe are both connected with vertical pipes, and spray heads are installed at the lower ends of the vertical pipes.

Compared with the prior art, the utility model has the advantages of:

1. the device is provided with 1 self-circulating water pump, and cooled low-temperature water and high-temperature water are mixed from a water collecting tank, so that the water spraying density on the surface of the filler of the cooling tower is increased, the water film uniformity on the surface of the filler is increased, and the heat radiation performance of the filler of the cooling tower is improved;

2. the device reduces the temperature of cooling water sprayed on the surface of the filler by mixing low-temperature cooling water pumped from a water collecting basin with high-temperature water, thereby achieving the purpose of reducing the requirement on the high-temperature resistance of the filler;

3. the device can also reduce the temperature of the inlet water by increasing the water spraying density and mixing under the normal temperature difference, thereby achieving the effects of reducing the temperature of the outlet water and improving the performance of the cooling tower.

Drawings

Fig. 1 is a schematic structural view of a conventional counter-flow cooling tower.

FIG. 2 is a schematic view of a high-temperature counterflow cooling tower.

Fig. 3 is a schematic side view of a high-temperature type counter-flow cooling tower.

Fig. 4 is a schematic view of a connection structure of an internal circulation pipeline and a self-circulation water distribution pipe.

In the figure: 1. a fan system; 2. a water distribution system; 3. a filler; 4. a tower body; 5. a circulation pipe; 6. a self-circulation water distribution pipe; 7. a self-circulating branch pipe; 8. an outer water distributing pipe; 81. a branch pipe is divided; 9. a water collecting basin; 10. a water pump; 11. a connecting pipe; 12. a water collection tank.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

Referring to fig. 1 to 4, in a specific embodiment, a high temperature type counter-flow cooling tower includes a tower body 4, wherein a filler 3 is disposed in the tower body 4, a fan system 1 is disposed at a top end, and a water collecting basin 9 is disposed at a bottom end; a self-circulation water distribution pipe 6 is arranged above the filler 3; an outer water distribution pipe 8 is arranged above the self-circulation water distribution pipe 6; two sides of the self-circulation water distribution pipe 6 are provided with self-circulation branch pipes 7; outer branch pipes 81 are arranged on two sides of the outer water distribution pipe 8; the bottom parts of the self-circulation branch pipe 7 and the external branch pipe 81 are provided with spray heads; the outer water distribution pipe 8 is connected with an external cooled device; the self-circulation water distribution pipe 6 is communicated with a water collecting basin 9 through a circulation pipeline 5; the circulating pipeline 5 is provided with a water pump 10.

Self-circulation water distribution pipes 6 are uniformly distributed on two sides of the self-circulation water distribution pipe 6 along the axial direction; outer branch pipes 81 are evenly distributed along the axial direction at both sides of the outer water distribution pipe 8.

Further optimization is carried out on the basis of the embodiment: the outer branch pipes 81 are located above the corresponding self-circulating branch pipes 7 and arranged in parallel with each other. So that the water sprayed by the spray heads of the external branch pipes 81 is directly contacted with the self-circulation branch pipes 7, thereby realizing heat exchange and improving the heat exchange efficiency.

Further optimization is carried out on the basis of the embodiment: the bottom spray head of the external branch pipe 81 is positioned above the bottom spray head of the self-circulation branch pipe 7. So that the water sprayed from the bottom spray nozzle of the external branch pipe 81 can be directly mixed with the water sprayed from the bottom spray nozzle of the self-circulation branch pipe 7 to realize the first heat exchange and then fall on the filler; prevent high temperature water from damaging the service life of the filler.

Further optimization is carried out on the basis of the embodiment: the bottom of the water collecting basin 9 is connected with a water collecting tank 12; the water collecting tank 12 is communicated with an inlet of the water pump 10 through a connecting pipe 11; the outlet of the water pump 10 is communicated with the circulating pipeline 5.

Further optimization is carried out on the basis of the embodiment: the bottoms of the self-circulation branch pipe 7 and the external branch pipe 81 are both connected with vertical pipes, and spray heads are installed at the lower ends of the vertical pipes.

The utility model discloses concrete theory of operation:

as shown in fig. 2-4, the high-temperature counter-flow cooling tower is composed of a filler 2, a tower body 4, an external water distribution pipe 8, a fan system 1 and a self-circulation water system. The self-circulation water system consists of a water pump 10, a water collecting basin 9, a water collecting tank 12, a connecting pipe 11, a circulation pipeline 5 and a self-circulation water distribution pipe 6, wherein the self-circulation water distribution pipe 6 is positioned below an outer water distribution pipe 8.

The self-circulation water distribution system pumps low-temperature water in the water collecting basin of the cooling tower to the top of the filler and sprays the water to the upper surface of the filler. When the cooling tower operates, the self-circulation water system is started first, and then the external circulation water distribution system is opened. The high-temperature water is mixed with the low-temperature water after being sprayed, so that the temperature of the cooling water sprayed on the surface of the filler is reduced.

Because the external circulation water quantity is lower, the self-circulation water system pumps up the low-temperature water of the water collecting basin to mix with the low-temperature water, the water spraying density on the surface of the filler is increased, and the problems of low water spraying density on the surface of the filler and poor water distribution uniformity caused by small water quantity of the external circulation water distribution system are avoided, so that the water film on the surface of the filler is uniform, and the effect of increasing the heat dissipation capacity is achieved.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims

1. A high-temperature type counter-flow cooling tower comprises a tower body (4), wherein a filler (3) is arranged in the tower body (4), a fan system (1) is arranged at the top end of the tower body, and a water collecting basin (9) is arranged at the bottom of the tower body; it is characterized in that a self-circulation water distribution pipe (6) is arranged above the filler (3); an outer water distribution pipe (8) is arranged above the self-circulation water distribution pipe (6); a self-circulation branch pipe (7) is arranged on the side edge of the self-circulation water distribution pipe (6); an outer branch pipe (81) is arranged on the side edge of the outer water distribution pipe (8); the bottoms of the self-circulation branch pipe (7) and the outer branch pipe (81) are provided with spray heads; the outer water distribution pipe (8) is connected with an external cooled device; the self-circulation water distribution pipe (6) is communicated with the water collecting basin (9) through a circulation pipeline (5); and a water pump (10) is arranged on the circulating pipeline (5).

2. A high temperature type counterflow cooling tower according to claim 1, characterised in that the outer branch pipes (81) are located above the respective branch pipes (7) of the self-circulation, and are arranged parallel to one another.

3. A high temperature type counterflow cooling tower as in claim 1, wherein the bottom spray head of the outer branch pipe (81) is located above the bottom spray head of the self-circulating branch pipe (7).

4. A high temperature type counter flow cooling tower according to claim 1, wherein the bottom of said water collection basin (9) is connected to a water collection tank (12); the water collecting tank (12) is communicated with an inlet of the water pump (10) through a connecting pipe (11); and the outlet of the water pump (10) is communicated with the circulating pipeline (5).

5. A high temperature type counterflow cooling tower as in claim 1, wherein the bottom of the self-circulation branch pipe (7) and the bottom of the external branch pipe (81) are connected with vertical pipes, and the lower ends of the vertical pipes are provided with spray heads.