CN112013692B

CN112013692B - Cooling tower

Info

Publication number: CN112013692B
Application number: CN202010925854.6A
Authority: CN
Inventors: 姚德强; 禹鑫; 顾鹏
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-12-24
Anticipated expiration: 2040-09-04
Also published as: CN112013692A

Abstract

The application discloses a cooling tower relates to the field of data centers, and the data centers can be used for data transmission in application scenes such as cloud computing and cloud service. The cooling tower comprises a tower body, a heat exchanger, a sprayer, a first group of filter plates and a second group of filter plates. The heat exchanger is arranged in the tower body and is configured to enable the fluid to be cooled to pass through the heat exchanger so as to discharge the cooled fluid; the sprayer is arranged in the tower body and above the heat exchanger, and the sprayer is configured to spray coolant to the heat exchanger; first group's filter sets up in the tower body and is located the heat exchanger below, and the second group filter sets up in the tower body and is located first group filter below, and every filter in first group filter and the second group filter inclines for vertical direction to the distance that makes the first end of every filter and tower body bottom be greater than the second end of every filter and the distance of tower body bottom.

Description

Cooling tower

Technical Field

The application relates to the field of data centers, in particular to the technical field of refrigeration equipment, and particularly relates to a cooling tower.

Background

The data center includes, but is not limited to, data transmission, computation, storage and the like in application scenarios such as cloud computing, cloud service, cloud storage, big data, deep learning and the like. When the data center works, the heat is more generated, and the heat is usually dissipated through a cooling tower. Cooling towers typically include a tower body, a heat exchanger, and a spray shower. The sprayer is used for cooling the heat exchanger by extracting the coolant at the bottom of the tower body and spraying the coolant on the heat exchanger. However, during the process of spraying the coolant to the heat exchanger, impurities in the coolant may adhere to the heat exchanger to form scales, which reduces the heat exchange efficiency of the heat exchanger, and thus frequent cleaning and maintenance of the heat exchanger are required.

Disclosure of Invention

The present application provides a cooling tower, comprising: the tower body, the heat exchanger, the first group of filter plate and the second group of filter plate of spray thrower. Wherein a heat exchanger is arranged in the tower body, the heat exchanger being configured to pass a fluid to be cooled through the heat exchanger to discharge the cooled fluid. A sprayer is disposed in the tower and above the heat exchanger, the sprayer being configured to spray coolant to the heat exchanger. First group filter set up in just be located in the tower body the heat exchanger below, the second group filter set up in the tower body and be located first group filter below, first group filter with every filter in the second group filter inclines for vertical direction to the distance that makes the first end of every filter and tower body bottom be greater than the distance of the second end of every filter and tower body bottom.

According to the technology of this application has been solved at the in-process that sprays the coolant to the heat exchanger, impurity in the coolant can be attached to on the heat exchanger and the scale deposit, has reduced the heat exchange efficiency of heat exchanger, leads to the problem that needs frequently clear up and maintain the heat exchanger to the realization has improved the heat exchange efficiency of heat exchanger, has shortened the maintenance time of cooling tower.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present application, nor do they limit the scope of the present application. Other features of the present application will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not intended to limit the present application. Wherein:

FIG. 1 schematically illustrates an application scenario of a cooling tower according to an embodiment of the present application;

FIG. 2 schematically illustrates a block diagram of a cooling tower according to an embodiment of the present application;

FIG. 3 schematically illustrates a block diagram of a first set of filter panels and a second set of filter panels according to an embodiment of the application;

FIG. 4 schematically illustrates a block diagram of a cooling tower according to another embodiment of the present application;

FIG. 5 schematically illustrates a block diagram of a coolant collection tank according to another embodiment of the present application;

FIG. 6 schematically illustrates a block diagram of a coolant replenishing device according to an embodiment of the present application;

FIG. 7 schematically illustrates a block diagram of a coolant replenishing device according to another embodiment of the present application;

fig. 8 schematically shows a top view of a tower body according to an embodiment of the application;

fig. 9 schematically shows a top view of a filter plate support according to an embodiment of the application; and

fig. 10 schematically shows a block diagram of a filter board according to an embodiment of the application.

Detailed Description

The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).

Embodiments of the present application provide a cooling tower comprising: the tower body, the heat exchanger, the first group of filter plate and the second group of filter plate of spray thrower. Wherein, the heat exchanger is arranged in the tower body, and the heat exchanger is configured to make the fluid to be cooled pass through the heat exchanger so as to discharge the cooled fluid. The spray thrower is arranged in the tower body and above the heat exchanger, and the spray thrower is configured to spray the coolant to the heat exchanger. First group's filter sets up in the tower body and is located the heat exchanger below, and the second group filter sets up in the tower body and is located first group filter below, and every filter in first group filter and the second group filter inclines for vertical direction to the distance that makes the first end of every filter and tower body bottom be greater than the second end of every filter and the distance of tower body bottom.

Fig. 1 schematically shows an application scenario of a cooling tower according to an embodiment of the present application.

As shown in fig. 1, an application scenario 10 of the embodiment of the present application includes, for example, a cooling tower 200 and a data center 101.

In the embodiment of the present application, the data center 101 includes, but is not limited to, data transmission, computation, storage, and the like in application scenarios such as cloud computing, cloud service, cloud storage, big data, deep learning, and the like. The data center 101 generates a large amount of heat during operation, and usually radiates the heat by the cooling tower 200. For example, heat generated during operation of the data center 101 is carried by the fluid to the cooling tower 200, the cooling tower 200 cools the fluid from the data center 101 by an internal coolant, and the cooled fluid may flow back to the data center 101 again. In one example, the cooling tower 200 may be a closed cooling tower, i.e., the fluid from the data center 101 does not come into contact with the outside during the fluid flow into and out of the cooling tower 200.

FIG. 2 schematically illustrates a block diagram of a cooling tower according to an embodiment of the present application.

As shown in fig. 2, the cooling tower 200 includes, for example, a tower body 210, a heat exchanger 220, a shower 230, a first set of filter plates 240, and a second set of filter plates 250.

A heat exchanger 220 is disposed in the tower body 210, for example, and the heat exchanger 220 is configured to pass a fluid to be cooled through the heat exchanger 220 to discharge the cooled fluid. Where the fluid to be cooled carries heat generated by the data center, the fluid may be water.

In one example, the heat exchanger 220 may include a serpentine tube including an inlet 221 and an outlet 222, the inlet 221 and the outlet 222 of the serpentine tube being disposed outside the tower body 210, the inlet 221 of the serpentine tube being configured to receive the fluid to be cooled from outside the cooling tower, and the outlet 222 of the serpentine tube being configured to output the cooled fluid to the cooling tower. Wherein the inlet 221 is disposed above the outlet 220, for example, to facilitate fluid flow from the inlet 221 to the outlet 222 from the top down inside the serpentine tube. In one example, the cooling tower may be a closed cooling tower, i.e., fluid from the data center flows into the cooling tower from inlet 221 and out of the cooling tower from outlet 222, the fluid flowing in a serpentine tube and not in contact with the outside.

The shower unit 230 is provided in the tower body 210, for example, above the heat exchanger 220, and the shower unit 230 is configured to spray the coolant to the heat exchanger 220. The sprayer 230 includes, for example, a plurality of spray heads through which coolant is sprayed to the heat exchanger 220 to cool the fluid in the heat exchanger 220. Wherein the coolant may be water.

In the present embodiment, a first set of filter plates 240 is disposed in the tower body 210 below the heat exchanger 220, and a second set of filter plates 250 is disposed in the tower body 210 below the first set of filter plates 240.

Wherein the first set of filter plates 240 comprises, for example, at least one filter plate and the second set of filter plates 250 comprises, for example, also at least one filter plate. Wherein each filter plate of the first set of filter plates 240 and the second set of filter plates 250 is inclined with respect to the vertical direction such that a distance between a first end of each filter plate and the bottom of the tower body 210 is greater than a distance between a second end of each filter plate and the bottom of the tower body 210.

I.e. the first end in each filter plate is higher than the second end of each filter plate. After the sprayer 230 sprays the coolant to the heat exchanger 220, the coolant comes into contact with the surface of the heat exchanger 220 and cools the fluid inside the heat exchanger 220. The coolant drops from the heat exchanger 220 to the first and

second filter plates

240 and 250, and the first and

second filter plates

240 and 250 filter the coolant to filter impurities in the coolant. The coolant filtered by the first and

second filter plates

240 and 250 flows to the bottom of the tower body 210. The bottom of the tower 210 may be a water tray for storing coolant.

In the present embodiment, the first set of filter plates 240 are disposed above the second set of filter plates 250 such that a portion of the coolant falling on the first set of filter plates 240 is filtered by the first set of filter plates 240 and falls to the bottom of the tower 210, and a portion of the coolant flows to the second end of each filter plate in the first set of filter plates 240 without being filtered by the first set of filter plates 240 and then falls onto the second set of filter plates 250, and is continuously filtered by the second set of filter plates 250. Wherein the coolant falling to the bottom of the tower body 210 can be recycled, for example, the coolant at the bottom of the tower body 210 can be sucked into the shower 230 and sprayed again toward the heat exchanger 220 through the shower 230.

In the embodiment of the present application, by disposing the first and

second filter plates

240 and 250 below the heat exchanger 220, the coolant in the cooling tower is filtered by the two filter plates cooperating with each other to filter impurities in the coolant. Therefore, when the coolant is recycled, impurities in the coolant are prevented from scaling on the surface of the heat exchanger 220, the heat exchange efficiency of the heat exchanger 220 is improved, and the maintenance time of the cooling tower is shortened.

Fig. 3 schematically shows a block diagram of a first set of filter panels and a second set of filter panels according to an embodiment of the application.

As shown in fig. 3, the first group of filter plates 240 includes, for example, first filter plates 241 and second filter plates 242, and the first filter plates 241 and the second filter plates 242 are symmetrically disposed with respect to the vertical direction. The first filter plate 241 includes a first end 2411 and a second end 2412, and the first end 2411 is located at a greater distance from the bottom of the tower than the second end 2412. The second filter plates 242 include first and

second ends

2421 and 2422, and the first end 2421 is spaced a greater distance from the bottom of the tower body than the second end 2422.

The second group of filter plates 250 includes third filter plates 251 and fourth filter plates 252, the third filter plates 251 and the fourth filter plates 252 being symmetrically disposed with respect to the vertical direction. The third filter plate 251 includes a first end 2511 and a second end 2512, and the first end 2511 is located at a greater distance from the bottom of the tower than the second end 2512. The fourth filter plate 252 includes a first end 2521 and a second end 2522, the first end 2521 being spaced further from the bottom of the tower body than the second end 2522.

In another example, an axis of symmetry between the first filter plate 241 and the second filter plate 242 coincides with an axis of symmetry between the third filter plate 251 and the fourth filter plate 252, for example, an axis of symmetry AA' shown in fig. 3.

The second end 2412 of the first filter plate 241 is at a distance H from the axis of symmetry A₁Is greater than the distance H from the first end 2511 of the third filter plate 251 to the axis of symmetry A₂So that the unfiltered coolant on the first filter plates 241 falls from the second ends 2412 of the first filter plates 241 to the third filter plates 251. Similarly, the second ends 2422 of the second filter plates 242 are a distance H from the axis of symmetry A₃Is greater than the distance H from the first end 2521 of the fourth filter plate 252 to the axis of symmetry A₄Thereby allowing the unfiltered coolant on the second filter plates 242 to fall from the second ends 2422 of the second filter plates 242 to the fourth filter plates 252. Therefore, through the symmetrical arrangement of each filter plate in the first group of filter plates 240 and the second group of filter plates 250, the two groups of filter plates can be matched with each other to filter the coolant, and the filtering effect is improved.

In another example of the present application, the surface of each of the first and second sets of

filter plates

240 and 250 facing the shower side has a stepped structure. Namely, the first filter plates 241,

The second filter plate 242, the third filter plate 251 and the fourth filter plate 252 have a stepped structure toward the shower side.

In this embodiment, each filter plate may include a fiber filter having a better function of adsorbing impurities, and when a portion of the coolant falls into the bottom of the tower body through the filter plate from the upper surface of the filter plate, the filter plate adsorbs or blocks impurities in the coolant passing through the filter plate. In addition, the filter plate has a step-shaped structure, and when the other part of the coolant which does not penetrate through the filter plate flows on the upper surface of the filter plate from top to bottom, impurities in the coolant stay on each step. From this, the filter can be set up to the fibre filter screen that has step-like structure, can improve the filter effect of filter to the coolant.

FIG. 4 schematically illustrates a block diagram of a cooling tower according to another embodiment of the present application.

As shown in FIG. 4, unlike the embodiment shown in FIG. 2, the cooling tower 200 also includes a coolant collection tank 260. A coolant collection trough 260 is provided for at least one of the first and second sets of

filter panels

240, 250, the coolant collection trough 260 being configured to collect coolant that flows down the surface of at least one of the first and second sets of

filter panels

240, 250 toward one side of the sprayer 230. Impurities in the coolant collected by the coolant collection tank 260 may settle at the bottom of the coolant collection tank 260, and when the coolant collection tank 260 is filled with coolant, the coolant may overflow from the coolant collection tank 260, leaving impurities that settle at the bottom of the coolant collection tank 260. It can be seen that the coolant collection tank 260 has a filtering function, which can precipitate impurities in the coolant.

In the example shown in fig. 4, the coolant collection tank 260 is disposed on the second set of filter panels 250. For example, a coolant collection tank 260 is provided on each filter plate in the second set of filter plates 250. A coolant collection trough 260 is provided at the second end of the filter plate.

As shown in fig. 4, the cooling tower 200 may further include a coolant replenishment device 270, an inlet 270A of the coolant replenishment device 270 may be disposed at the bottom of the tower body 210, and an outlet 270B of the coolant replenishment device 270 may be disposed above the first group of filter plates 240. The coolant replenishment device 270 is configured to draw coolant from the bottom of the tower 210 through an inlet 270A of the coolant replenishment device 270 and discharge the coolant from an outlet 270B of the coolant replenishment device 270 to at least one of the first set of filter plates 240 and the second set of filter plates 250. In one example, the coolant makeup 270 draws coolant from the bottom of the tower 210 and discharges it onto the first set of filter plates 240.

In one example, the cooling tower may cool the fluid in the heat exchanger 220 by introducing air outside the cooling tower, in addition to cooling the fluid in the heat exchanger 220 by the coolant. In one operating condition, when the spray thrower 230 of the cooling tower is in an inactive state, no coolant falls on the first and second sets of

filter plates

240 and 250, so that the first and second sets of

filter plates

240 and 250 are dry.

In the present embodiment, the coolant at the bottom of the suction tower 210 may be pumped by the coolant replenishment device 270 to the first group of filter plates 240 and then the coolant on the first group of filter plates 240 flows to the second group of filter plates 250, thereby humidifying the first group of filter plates 240 and the second group of filter plates 250. When the air outside the cooling tower contacts the first and

second filter plates

240 and 250 after entering the cooling tower, the wetted first and

second filter plates

240 and 250 may be used to adsorb impurities in the air, which may include suspended particles. It can be seen that humidifying the first and second sets of

filter panels

240 and 250 by the coolant replenishment device 270 improves the air filtering effect of the first and second sets of

filter panels

240 and 250. In addition, after the air from the outside of the cooling tower contacts the first and second sets of

wet filter plates

240 and 250, the coolant on the first and second sets of

filter plates

240 and 250 absorbs the heat in the air and gasifies the air to cool the air, and the cooled air can be circulated upward to the heat exchanger 220 to cool the fluid in the heat exchanger 220.

As shown in fig. 4, the cooling tower 200 may also include a bottom filter structure 280. The bottom filter structure 280 is disposed in the tower body 210 below the second set of filter plates 250, and the bottom filter structure 280 is configured to collect the coolant overflowing from the coolant collection tank 260. The bottom filtering structure 280 may be, for example, a fiber filtering net, and may be used to block or adsorb impurities in the coolant to filter the coolant, and the filtered coolant falls into the bottom of the tower body 210.

The cooling tower 200 may also include a spray pump 290 and a spray delivery tube 2100. The spray pump 290 is provided outside the tower body 210, and the spray pump 290 is disposed to suck the coolant at the bottom of the tower body 210 from the outlet 210A at the bottom of the tower body 210.

The spray delivery pipe 2100 is connected to the spray pump 290, and the spray delivery pipe 2100 includes, for example, two parts, one part being located inside the tower body 210 and the other part being located outside the tower body 210, for example, the horizontal part of the spray delivery pipe 2100 is located inside the tower body 210 and the vertical part is located outside the tower body 210. A spray delivery pipe 2100 is provided on a portion in the tower body 210 to the spray 230, and the spray delivery pipe 2100 serves to discharge the coolant from the spray pump 290 from the spray 230. The coolant at the bottom of the tower body 210 is pumped by the spray pump 290 and the spray delivery pipe 2100, so that the coolant can be recycled.

The cooling tower 200 may further include a filter frame 2110, the filter frame 2110 is disposed at the outlet 210A of the bottom of the tower body 210, for example, and the filter frame 2110 is configured to filter the coolant drawn from the bottom of the tower body 210 by the spray pump 290. The filter frame 2110 may be a rectangular parallelepiped filter screen having six faces, five of which are provided with filter screens, and the remaining one face is a screen-free opening 2111, the opening 2111 being mounted, for example, on a side wall of the tower body 210. The coolant at the bottom of the tower body 210 is filtered by the filter frame 2110 before being drawn to the spray delivery pipe 2100 by the spray pump 290 to reduce impurities in the recycled coolant.

As shown in fig. 4, the cooling tower 200 may also include a drive fan 2120 and a cooling tower outlet 2130. Through the rotation of drive fan 2120 for the inside hot-air of cooling tower flows out the cooling tower from cooling tower air outlet 2130, realizes cooling down the inside of cooling tower.

FIG. 5 schematically illustrates a block diagram of a coolant collection trough according to another embodiment of the present application.

As shown in fig. 5, in another example, unlike the embodiment shown in fig. 2, a coolant collection trough 260 is provided, for example, for both the first set of filter plates 240 and the second set of filter plates 250, i.e., each filter plate may be provided with one coolant collection trough 260. For example, the second end of each of the first, second, third and

fourth filter plates

241, 242, 251 and 252 is provided with a coolant collection groove 260.

In the embodiment of the present application, a splash guard 261 is disposed at the notch of the coolant collection tank 260, and a filtering unit 262 is disposed at the bottom of the coolant collection tank 260. Wherein the splash guard 261 prevents coolant flowing down from the filter plate from washing away impurities that settle at the bottom of the coolant collection tank 260. The filtering unit 262 may be a fiber filter net for adsorbing impurities of the coolant in the coolant collection tank 260.

Fig. 6 schematically shows a structural view of a coolant replenishing apparatus according to an embodiment of the present application.

As shown in fig. 6, the coolant replenishing apparatus 270 includes, for example, a coolant replenishing pump 271, a vertical delivery pipe 272, and a horizontal delivery pipe 273.

The coolant replenishing pump 271 is provided at the bottom of the tower body, and the coolant replenishing pump 271 is disposed to suck the coolant at the bottom of the tower body.

The vertical delivery pipe 272 is connected to the coolant replenishing pump 271 to deliver the coolant from the coolant replenishing pump 271.

The horizontal transfer pipe 273 is connected to the vertical transfer pipe 272, and the horizontal transfer pipe 273 is disposed above the first end of each of the filter plates in the first group 240, for example, the horizontal transfer pipe 273 is disposed above the first ends of the first filter plates 241 and the first ends of the second filter plates 242. A plurality of outlets are provided on the horizontal duct 273 to discharge the coolant from the vertical duct 272 from the plurality of outlets as indicated by the arrows at the horizontal duct 273. Wherein the extending direction BB' of the horizontal conveying pipe 273 is perpendicular to the direction indicated by the arrow C pointing from the first end of each filter plate to the second end of each filter plate.

In the present embodiment, the first set of filter panels 240 and the second set of filter panels 250 have a space therebetween such that air from the outside in the cooling tower can pass from the space between the first set of filter panels 240 and the second set of filter panels 250 up to the heat exchanger to cool the fluid in the heat exchanger. Wherein the direction in which air circulates upward through the space between the first and second sets of

filter plates

240 and 250 is as indicated by the curved hollow arrows.

Fig. 7 schematically shows a structural view of a coolant replenishing apparatus according to another embodiment of the present application.

As shown in fig. 7, the first filter plate 241 and the second filter plate 242 of the first group of filter plates 240 are spaced apart by a certain distance. For example, a predetermined distance H is provided between the first end of the first filter plate 241 and the first end of the second filter plate 242₅。

The coolant supplementing device 270 may further include a connection duct 274, for example, connected to the vertical duct 272 to supply the coolant from the vertical duct 272, for example, to supply the cooling from the vertical duct 272 to the horizontal duct 273. Wherein the length of the connecting conveying pipe 274 is greater than or equal to the preset distance H₅The coolant, which is conveniently discharged from a plurality of outlets provided on the horizontal transfer pipe 273, can fall to the first ends of the first filter plates 241 and the first ends of the second filter plates 242.

The horizontal transfer pipe 273 includes, for example, a first sub-transfer pipe 2731 and a second sub-transfer pipe 2732.

The first sub-conveying pipe 2731 is disposed above the first ends of the first filter plates 241, and the first sub-conveying pipe 2731 is connected to the connection conveying pipe 274 to discharge the coolant from the connection conveying pipe 274, for example, from a plurality of outlets disposed on the first sub-conveying pipe 2731 from which the coolant is discharged as indicated by arrows at the first sub-conveying pipe 2731.

The second sub-conveying pipe 2732 is disposed above the first ends of the second filter plates 242, and the second sub-conveying pipe 2732 is connected to the connection conveying pipe 274 to discharge the coolant from the connection conveying pipe 274, for example, from a plurality of outlets provided on the second sub-conveying pipe 2732 from which the coolant is discharged as indicated by arrows at the second sub-conveying pipe 2732.

In the embodiment of the present application, the first and second sets of

filter plates

240 and 250 have a space therebetween, so that air from the outside in the cooling tower can pass upward from the space between the first and second sets of

filter plates

240 and 250 to the heat exchangerTo cool the fluid in the heat exchanger. For example, the direction in which air circulates upward through the space between the first and second sets of

filter panels

240 and 250 is as indicated by the curved hollow arrows. In addition, a predetermined distance H is provided between the first end of the first filter plate 241 and the first end of the second filter plate 242₅So that air from the outside in the cooling tower can pass upward to the heat exchanger from between the first ends of the first and

second filter plates

241 and 242 to cool the fluid in the heat exchanger. For example, the direction in which the air passes upward between the first ends of the first filter plates 241 and the first ends of the second filter plates 242 is as indicated by vertical hollow arrows.

Fig. 8 schematically shows a top view of a tower body according to an embodiment of the application.

As shown in fig. 8, the tower body 210 is arranged, for example, as a quadrangular prism structure, and fig. 8 shows a top view of the quadrangular prism structure. The quadrangular prism structure includes, for example, a first sidewall 211 and a second sidewall 212 which are oppositely disposed, and a third sidewall 213 and a fourth sidewall 214 which are oppositely disposed. The first side wall 211, the second side wall 212, the third side wall 213, and the fourth side wall 214 are each provided with a vent hole 215, and the vent holes 215 are configured to introduce air outside the cooling tower into the cooling tower. It can be seen that, each side wall of the tower body 210 of the embodiment of the present application is provided with a vent hole, which improves the air circulation amount, thereby improving the cooling efficiency of the cooling tower.

In the embodiment of the present application, the first filter plates 241 and the third filter plates 251 are disposed toward the first sidewall 211, and the first filter plates 241 and the third filter plates 251 are configured to filter air entering the cooling tower from the vent holes 215 of the first sidewall 211 and guide the filtered air to the heat exchanger. For example, air entering the cooling tower from the air vents 215 in the first sidewall 211 contacts the upper surfaces of the first and

third filter plates

241 and 251, the wet first and

third filter plates

241 and 251 adsorb impurities in the air and cool the air, and the filtered and cooled air is circulated upward to the heat exchanger. Wherein, after the air contacts the first filter plate 241 and the third filter plate 251, the air flow direction is changed to circulate upward to the heat exchanger.

In the embodiment of the present application, the second filter plates 242 and the fourth filter plates 252 are disposed toward the second sidewall 212, and the second filter plates 242 and the fourth filter plates 252 are configured to filter air entering the cooling tower from the ventilation holes 215 of the second sidewall 212 and guide the filtered air to the heat exchanger. For example, air entering the cooling tower from the air vents 215 in the second sidewall 212 contacts the upper surfaces of the second and

fourth filter plates

242 and 252, which are wet, adsorb impurities in the air and cool the air, and the filtered and cooled air is circulated upward to the heat exchanger. Wherein, after the air comes into contact with the second filter plates 242 and the fourth filter plates 252, the flow direction of the air is changed to be circulated upward to the heat exchanger.

In the present embodiment, air entering the cooling tower from the vents 215 in the third and

fourth sidewalls

213, 214 can pass from the space between the first and second sets of filter panels up to the heat exchanger to cool the fluid in the heat exchanger. Alternatively, air entering the cooling tower from the ventilation holes 215 in the third and

fourth side walls

213, 214 may be circulated up to the heat exchanger between the first ends of the first and

second filter plates

241, 242 to cool the fluid in the heat exchanger.

Fig. 9 schematically shows a top view of a filter plate support according to an embodiment of the application.

As shown in fig. 9, the cooling tower further includes a filter plate support portion 2140. The filter plate support 2140 is fixed to the tower side wall, for example. The first and second sets of filter plates are mounted on the filter plate support portions 2140.

For example, the filter plate supporting portion 2140 includes first supporting

portions

2141A, 2141B, 2141C, 2141D and second supporting

portions

2142A, 2142B, 2142C, 2142D. The first supporting

portions

2141A, 2141B, 2141C, 2141D are fixed to the tower sidewall, the first end of each of the first group of filter plates and the second group of filter plates is mounted on the first supporting

portions

2141A, 2141B, 2141C, 2141D, the first supporting

portions

2141A, 2141B are disposed adjacent to each other, or the first supporting

portions

2141A, 2141B may be an integrally formed structure.

The second supporting

portions

2142A, 2142B, 2142C, 2142D are fixed to the tower sidewall, and the second ends of each of the first and second filter plates are mounted on the second supporting

portions

2142A, 2142B, 2142C, 2142D.

Specifically, each of the first supporting

parts

2141A, 2141B, 2141C, 2141D includes a first end fixed to, for example, the third sidewall 213 and a second end fixed to, for example, the fourth sidewall 214. Each of the second supporting

portions

2142A, 2142B, 2142C, 2142D includes a first end fixed to the third sidewall 213, for example, and a second end fixed to the fourth sidewall 214, for example. Among them, the coolant collection groove 260 may be installed on any one or more of the second supports 2142A, 2142B, 2142C, 2142D, and the coolant collection groove 260 is shown installed on the second supports 2142C, 2142D.

The presence of a portion of the structure in the first and second support portions shown in fig. 9 is indicated by a dashed line. The portion indicated by the dotted line is a portion blocked by the fourth sidewall 214.

As shown in fig. 10, the first supporting portion 2141A has, for example, a groove structure, and the second supporting portion 2142A has, for example, a step structure.

Taking the first filter plate 241 as an example, the first end 2411 of the first filter plate 241 includes, for example, a projection 2411_ 1. When the first filter plates 241 are mounted to the first and

second support portions

2141A and 2142A, the protrusions 2411_1 are located, for example, in the groove structures of the first support portions 2141A, preventing the first filter plates 241 from being washed off by the coolant. The second ends 2412 of the first filter plates 241 are, for example, placed on the stepped structure of the second support portions 2142A to facilitate the disassembly cleaning of the first filter plates 241. The first and second supporting

parts

2141A and 2142A are configured to facilitate mounting and dismounting of the first filter plates 241. Similarly, the mounting of each filter plate to the first and second support parts is similar to that of the first filter plate 241, and thus, a detailed description thereof is omitted.

The coolant of this application embodiment can carry out the multistage filtration through the filter unit, bottom filtration and the filtration frame in first group filter, second group filter, the coolant collecting vat, has improved the filter effect to the coolant, avoids the impurity in the coolant to scale deposit on heat exchanger surface to improve the heat exchange efficiency of heat exchanger, shortened the maintenance time of cooling tower. In addition, the first set of filter panels and the second set of filter panels can filter air to avoid impurities in the air from being incorporated into the coolant.

The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cooling tower, comprising:

a tower body;

a heat exchanger disposed in the tower body, the heat exchanger being configured to pass a fluid to be cooled therethrough to discharge the cooled fluid;

a sprayer disposed in the tower above the heat exchanger, the sprayer being configured to spray coolant to the heat exchanger;

the first group of filter plates are arranged in the tower body and are positioned below the heat exchanger, the second group of filter plates are arranged in the tower body and are positioned below the first group of filter plates, and each filter plate in the first group of filter plates and the second group of filter plates is inclined relative to the vertical direction, so that the distance between the first end of each filter plate and the bottom of the tower body is greater than the distance between the second end of each filter plate and the bottom of the tower body; and

a coolant replenishment device, an inlet of the coolant replenishment device being disposed at the bottom of the tower, an outlet of the coolant replenishment device being disposed above the first set of filter plates, the coolant replenishment device being configured to draw coolant from the bottom of the tower through the inlet of the coolant replenishment device and to discharge the coolant from the outlet of the coolant replenishment device to at least one of the first set of filter plates and the second set of filter plates.

2. The cooling tower of claim 1, further comprising:

a coolant collection trough disposed for at least one of the first set of filter panels and the second set of filter panels, the coolant collection trough configured to collect coolant that flows down a surface of at least one of the first set of filter panels and the second set of filter panels that faces a sprayer.

3. A cooling tower according to claim 1, wherein the surface of the filter plate on the side facing the shower has a stepped structure.

4. The cooling tower of claim 2, wherein the coolant collection tank is provided with a splash screen at the notch and a filter unit at the bottom.

5. The cooling tower of claim 1, wherein the coolant replenishment means comprises:

a coolant supplementary pump disposed at the bottom of the tower body, the coolant supplementary pump being configured to pump the coolant at the bottom of the tower body;

a vertical delivery pipe connected with the coolant supplementary pump to deliver the coolant from the coolant supplementary pump; and

and the horizontal conveying pipe is connected with the vertical conveying pipe, is arranged above the first end of each filter plate in the first group of filter plates, and is provided with a plurality of outlets so as to discharge the coolant from the vertical conveying pipe.

6. The cooling tower of claim 5, wherein the horizontal transport tube extends in a direction perpendicular to a direction from the first end of each filter plate to the second end of each filter plate.

7. The cooling tower of claim 5, wherein:

the first set of filter plates includes: the filter comprises a first filter plate and a second filter plate, wherein a preset distance is reserved between the first end of the first filter plate and the first end of the second filter plate;

the coolant replenishing apparatus further includes: the connecting conveying pipe is connected with the vertical conveying pipe to convey the coolant from the vertical conveying pipe, and the length of the connecting conveying pipe is greater than or equal to the preset distance;

wherein the horizontal transfer pipe comprises:

a first sub-duct disposed above the first end of the first filter plate, the first sub-duct being connected to the connection duct to discharge the coolant from the connection duct;

and a second sub-duct disposed above the first end of the second filter plate, the second sub-duct being connected with the connection duct to discharge the coolant from the connection duct.

8. The cooling tower of claim 1, wherein:

the first group of filter plates comprise a first filter plate and a second filter plate, and the first filter plate and the second filter plate are symmetrically arranged relative to the vertical direction;

the second group of filter plates comprises a third filter plate and a fourth filter plate, and the third filter plate and the fourth filter plate are symmetrically arranged relative to the vertical direction.

9. The cooling tower of claim 8, wherein:

a symmetry axis between the first filter plate and the second filter plate is coincident with a symmetry axis between the third filter plate and the fourth filter plate;

the distance between the second end of the first filter plate and the symmetry axis is greater than the distance between the first end of the third filter plate and the symmetry axis;

the distance between the second end of the second filter plate and the symmetry axis is greater than the distance between the first end of the fourth filter plate and the symmetry axis.

10. The cooling tower of claim 2, further comprising:

a bottom filter structure disposed in the tower body below the second set of filter plates, the bottom filter structure configured to collect coolant overflowing the coolant collection tank.

11. The cooling tower of claim 8, wherein the tower body is configured as a quadrangular prism structure comprising first and second oppositely disposed sidewalls and third and fourth oppositely disposed sidewalls.

12. The cooling tower of claim 11, wherein the first side wall, the second side wall, the third side wall, and the fourth side wall are each provided with a vent configured to direct air outside the cooling tower into the cooling tower.

13. The cooling tower of claim 11, wherein:

the first filter plate and the third filter plate are disposed toward the first sidewall, and are configured to filter air entering the cooling tower from the vent holes of the first sidewall and guide the filtered air to the heat exchanger;

the second filter plate and the fourth filter plate are disposed toward the second sidewall, and are configured to filter air entering the cooling tower from the vent holes of the second sidewall and guide the filtered air to the heat exchanger.

14. The cooling tower of claim 2, further comprising:

the filter supporting part, the filter supporting part is fixed at the tower body lateral wall, first group filter with the second group filter is installed on the filter supporting part.

15. The cooling tower of claim 14, wherein the filter plate support comprises:

the first support part is fixed on the side wall of the tower body, and the first end of each filter plate in the first group of filter plates and the second group of filter plates is arranged on the first support part; and

the second supporting part is fixed on the side wall of the tower body, and the second ends of the first group of filter plates and each filter plate in the second group of filter plates are arranged on the second supporting part.

16. The cooling tower of claim 15, wherein the coolant collection trough is mounted on the second support.

17. The cooling tower of claim 1, further comprising:

a spray pump disposed outside the tower body, the spray pump being configured to draw the coolant at the bottom of the tower body from an outlet at the bottom of the tower body; and

the spray delivery pipe, with the pump connection sprays, it is located to spray the delivery pipe set up on the part in the tower body the spray thrower, spray the delivery pipe and be used for coming from the coolant of pump sprays is followed the spray thrower is discharged.

18. The cooling tower of claim 17, further comprising:

and the filtering frame is arranged at an outlet at the bottom of the tower body, and is configured to filter the coolant pumped from the bottom of the tower body by the spray pump.

19. A cooling tower according to claim 1, wherein the heat exchanger comprises a serpentine tube comprising an inlet and an outlet, the inlet and the outlet of the serpentine tube being disposed outside the tower body, the inlet of the serpentine tube being configured to receive fluid to be cooled from outside the cooling tower, the outlet of the serpentine tube being configured to output cooled fluid from the cooling tower.