CN215864746U - Dry-wet composite cooling tower - Google Patents
Dry-wet composite cooling tower Download PDFInfo
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- CN215864746U CN215864746U CN202121865414.2U CN202121865414U CN215864746U CN 215864746 U CN215864746 U CN 215864746U CN 202121865414 U CN202121865414 U CN 202121865414U CN 215864746 U CN215864746 U CN 215864746U
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Abstract
The utility model discloses a dry-wet composite cooling tower, which comprises a high-level water tank, an inner tower, an outer tower, a first cold water pool of a hot water pool and a second cold water pool, wherein the inner tower is arranged inside the outer tower, and the high-level water tank is arranged at the top of the outer tower; the inner tower comprises a plate heat exchanger and an inner tower air duct, the plate heat exchanger is arranged in the inner tower air duct, the top of the inner tower air duct is provided with an axial flow fan, the water inlet end of the plate heat exchanger is connected to the high-level water tank, and the water outlet end of the plate heat exchanger is connected to the first cold water pool; the outer tower comprises a gravity type water distributor, a packing layer and an outer tower air channel, the gravity type water distributor and the packing layer are both arranged in the outer tower air channel, a plurality of axial flow fans are arranged at the top of the outer tower air channel, the water inlet end of the gravity type water distributor is connected to a high-level water tank, and a second cold water tank is arranged at the bottom of the packing layer. The dry-wet composite cooling tower can adopt different working modes such as dry type, wet type or dry-wet type according to the change of the ambient temperature, thereby achieving better energy-saving effect and cooling effect.
Description
Technical Field
The utility model relates to the technical field of cooling towers, in particular to a dry-wet composite cooling tower.
Background
The main flow structural form of the existing cooling tower comprises a wet cooling tower and a dry cooling tower, hot water in the system is sprayed to the surface of a heat dissipation material by the wet cooling tower and is in contact with passing air, heat exchange effect is generated between the hot water and cold air, meanwhile, part of the hot water is evaporated, and heat is taken away by steam volatilization to achieve hot water cooling. The disadvantage is that a large amount of water is wasted by evaporation and a spray pump is required. In the dry cooling tower, the cooled medium passes through the coil pipe and exchanges heat with cooling water or air outside the coil pipe to form a closed circulation system. The cooled medium is not wasted, and the defect is that chilled water such as air is needed as the cooling medium, and the cooling effect is poor when the ambient temperature is high.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a dry-wet composite cooling tower, which adopts different working modes such as dry type, wet type or dry-wet type according to the change of ambient temperature, achieves better energy-saving effect and cooling effect, and improves the reliability of the system.
The utility model is realized by the following technical scheme:
a dry-wet composite cooling tower comprises a high-level water tank, an inner tower, an outer tower, a hot water tank, a first cold water tank and a second cold water tank, wherein the inner tower is arranged inside the outer tower; the inner tower comprises a plate heat exchanger and an inner tower air duct, the plate heat exchanger is arranged in the inner tower air duct, the top of the inner tower air duct is provided with an axial flow fan, the water inlet end of the plate heat exchanger is connected to the high-level water tank, and the water outlet end of the plate heat exchanger is connected to the first cold water pool; the outer tower comprises a gravity type water distributor, a packing layer and an outer tower air channel, the gravity type water distributor and the packing layer are both arranged in the outer tower air channel, a plurality of axial flow fans are arranged at the top of the outer tower air channel, the water inlet end of the gravity type water distributor is connected to a high-level water tank, and a second cold water tank is arranged at the bottom of the packing layer.
As one of the preferable schemes of the utility model, two groups of gravity type water distributors and packing layers are arranged in the outer tower, the two groups of gravity type water distributors and the packing layers are symmetrically arranged at two sides of the inner tower, the bottoms of the packing layers are respectively provided with a cold water disc, and the cold water discs are communicated with a second cold water pool.
As one preferable scheme of the utility model, a water receiving disc is arranged around the cold water disc, and the height of a water retaining bar of the water receiving disc is lower than that of the water retaining bar of the cold water disc.
As one preferable scheme of the utility model, the edges of the packing layers are provided with water retaining strips, and the holes between two adjacent packing layers are arranged in a staggered mode.
As one preferable scheme of the utility model, the filler layer comprises a plurality of filler plates, and the surface of each filler plate is plated with a polymer nano layer.
As one of the preferable schemes of the utility model, the gravity type water distributor is an umbrella-shaped spherical water distributor, and comprises a circular main pipe, branch pipes which are communicated with the circular main pipe and are arranged in an umbrella shape, and a spherical shower head arranged on each branch pipe, wherein the circular main pipe is communicated with a high-level water tank and a first cold water tank through an electromagnetic valve.
As one of the preferable schemes of the utility model, the plate heat exchanger comprises a plurality of heat exchanger groups arranged side by side, and the heat exchanger groups are arranged in series.
In a preferred embodiment of the present invention, the first cold water tank is connected to the second cold water tank through a siphon and an electromagnetic valve. The electromagnetic valve is opened, and the first cold water pool is communicated with the second cold water pool.
As one preferable scheme of the utility model, both the inner tower and the outer tower are provided with an access passage and an access door.
The utility model also comprises a panel, wherein the lower part of the panel is provided with a louver air guide opening.
The utility model has the beneficial effects that:
the inner tower and the outer tower are combined, the inner tower is in dry cooling, the outer tower is in wet cooling, the characteristics of dry cooling and wet cooling are combined, different working modes can be adopted according to the environment temperature, so that a better energy-saving effect and a better cooling effect are achieved, and the reliability of the system is improved.
The outer tower adopts two groups of gravity type water distributors and a packed tower which are symmetrically arranged, the gravity type water distributors can meet the requirement of spraying pressure by relying on the gravity of the high-level water tank, the energy consumption is reduced, meanwhile, the umbrella-shaped spherical water distributors are adopted, and the water retaining strips are arranged around the packing layer, so that the evaporation heat dissipation, the convection heat transfer and the radiation heat transfer are realized, and the cooling effect is improved.
The cold water pools of the inner tower and the outer tower are communicated through a siphon pipe, so that the normal operation of the system under the condition of insufficient cold water quantity can be ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a flow principle of a dry-wet composite cooling tower;
FIG. 2 is a schematic diagram of an external structure of a dry-wet hybrid cooling tower;
FIG. 3 is a schematic diagram of the internal structure of a dry-wet hybrid cooling tower;
FIG. 4 is a schematic top view of a dry-wet hybrid cooling tower;
FIG. 5 is a schematic structural view of an umbrella-shaped spherical water distributor;
FIG. 6 is a schematic view of a spherical water distributor;
FIG. 7 is a schematic cross-sectional view of an odd-numbered layer in a filler layer;
FIG. 8 is a schematic cross-sectional view of an even number of layers in the filler layer;
FIG. 9 is a schematic cross-sectional view of a cold water pan and a water pan;
FIG. 10 is a top view of the cold water tray and the water tray;
fig. 11 is a schematic structural view of a plate heat exchanger.
FIG. 12 is a schematic structural view of one side of a dry-wet composite cooling tower panel;
fig. 13 is a schematic structural view of the other side of the dry-wet composite cooling tower panel.
In the figure: 1-high level water tank, 2-electromagnetic valve V1, 3-electromagnetic valve V4/V7/V8/V9, 4-electric balance valve V2/V3, 5-gravity type water distributor, 51-spherical water distributor, 6-packing layer, 7-plate heat exchanger, 8-first cold water tank, 9-second cold water tank, 10-hot water tank, 11-inner tower, 12-outer tower, 13-cold water tray, 14-water pan, 15-valve room, 16-water pump room, 17-maintenance channel, 18-maintenance door, 19-panel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1-4, the embodiment provides a dry-wet composite cooling tower, which includes a high-level water tank 1, an inner tower 11, an outer tower 12, and a hot water tank 10, wherein the inner tower 11 is disposed inside the outer tower 12, the high-level water tank 1 is disposed at the top of the outer tower 12, a water inlet end of the hot water tank 10 is communicated with a hot water source, the hot water source can be return water of an air conditioner, industrial processing equipment, or other waste heat/waste heat sources, and a water outlet end of the hot water tank 10 is communicated with the high-level water tank 1.
Specifically, interior tower 11 includes plate heat exchanger 7 and interior tower wind channel, and in plate heat exchanger 7 located interior tower wind channel, the top in interior tower wind channel was equipped with axial fan, and plate heat exchanger 7's the end of intaking is connected to high-order water tank 1, and the end of going out is connected to first cold water pond 8, and the water in first cold water pond 8 is used for the cooling water to go out water.
A water level detector, a heater and the like are arranged in the high-level water tank 1, and the water level and the temperature of the high-level water tank 1 can be adjusted. The water outlet of the high-level water tank 1 is respectively communicated with the water ways of the inner tower and the outer tower through an electromagnetic valve 2, an electric stop valve 3(V4) and an electric balance valve 4(V2, V3). The first cold water pool 8 is connected to a second cold water pool 9 through a siphon heat exchange pipe and a valve V9, the second cold water pool 9 is connected to a load water supply end through a pump B3 and a valve V5, the first cold water pool 8 is connected to the load water supply end through a pump B4 and a valve V6, and the hot water pool 10 is connected to a load water return end through a pump B1. The first cold water pool 8 is also connected to the water inlet end of the spray packed tower through a pump B5 and valves V7 and V8, and fluid communication between the inner tower and the outer tower is realized.
A baffle is arranged between an inner tower 11 and an outer tower 12 in the dry-wet composite cooling tower, and an empty space formed between the inner tower and the outer tower can be used as a valve room 15 and a water pump room 16 so as to improve the space utilization rate. Meanwhile, in order to facilitate maintenance, access doors 18 are arranged on the periphery of the baffle plate, and access channels 17 are arranged on the inner tower and the outer tower, so that maintenance personnel can maintain and check conveniently.
As shown in fig. 5-8, the spray packing layer comprises a plurality of gravity water distributors 5 and a packing layer 6, the packing is made of PVC, water retaining strips are arranged at the edge of the packing layer 6, and holes between two adjacent packing layers are arranged in a staggered manner. The packing layer 6 comprises a plurality of packing plates, a water outlet and a blind groove are arranged on each packing plate, and a polymer nano layer is plated on the surface of each packing plate to prevent algae breeding.
The gravity type water distributor 5 is an umbrella-shaped spherical water distributor and comprises a circular main pipe, branch pipes which are communicated with the circular main pipe and are arranged in an umbrella shape, and spherical sprinklers arranged on each branch pipe, wherein water outlets are formed in 360 degrees of the spherical surface.
As shown in fig. 9 and 10, a water receiving tray 14 is arranged around the cold water tray 13, and the height of the water bar of the water receiving tray 14 is lower than that of the water bar of the cold water tray. Preferably, the cold water tray is integrally formed with the water-receiving tray.
As shown in fig. 11, the plate heat exchanger 7 includes a plurality of heat exchanger groups arranged side by side, and the heat exchanger groups are arranged in series. The plate heat exchanger is of a stainless steel casting structure, and the heat exchanger groups are connected through quick connectors. The quick connector is a closed high-pressure quick connector made of stainless steel.
As shown in fig. 12 and 13, the dry-wet composite cooling tower includes a panel 19, wherein the lower portion of the panel 19 is provided with a louver air guide opening, and the panel connection can be a male plug and a female plug.
The dry-wet composite cooling tower can adopt different working modes according to the ambient temperature, and comprises the following specific steps:
(1) winter mode (ambient temperature below 10 deg.C)
The inner tower 11 is a main tower and the outer tower 12 is an auxiliary tower. The main tower works, and the auxiliary tower is reserved. Pumps B1, B2, B4 were operated, and valves V1, V4, V6 were operated. Pump B3, valves V2, V3, V5 are on standby. The hot water in the high-level water tank 1 passes through the plate heat exchanger 7 to the first cold water tank 8 by gravity. The cold air introduced from the bottom of the inner tower is fully exchanged heat in the plate heat exchanger, the air is discharged by a top axial flow fan after the temperature is raised, the cooled hot water flows into the first cold water tank 8, and the water in the first cold water tank 8 is output through B4 and V6. The water in the hot water tank 10 flows into the head tank 1 through the pump B2 to ensure a sufficient amount of water.
Under this mode, outer tower is as reserve tower, when interior tower trouble, launches outer tower, guarantees the normal operating of cooling tower, but the tower in the quick overhaul simultaneously.
(2) Summer mode (ambient temperature greater than 20 deg.C)
The outer tower 12 is a main tower, and the inner tower 11 is an auxiliary tower; the main tower works, and the auxiliary tower is reserved; pumps B1, B2, B3 operate, valves V1, V2, V3, V5 operate. Pump B4, valves V4, V6 are on standby. Hot water in the high-level water tank 1 is sprayed to the packing layer 6 through the umbrella-shaped spherical water distributor 5 by utilizing gravity, the water is leaked layer by layer through the packing, a gap is formed between the packing, the hot water is exhausted by the axial flow fan on the top, a horizontal air channel is formed between the packing, the hot water and the water dripped vertically form heat exchange to generate steam, the steam volatilizes to take away heat in the forms of evaporation heat dissipation, convection heat transfer, radiation heat transfer and the like, and the cooling effect is achieved. The cooling water returns to the second cold water pool 9 through the cold water disc 13, and the water in the second cold water pool 9 is output through the pump B3 and the electromagnetic valve V5.
(3) Spring and autumn (when the ambient temperature is more than or equal to 10 ℃ and less than or equal to 20 ℃)
The double towers are connected in series and work simultaneously. Pumps B1, B2, B3, B4 and B5 work, valves V1, V4, V5, V7 and V8 work, water in a high-level water tank enters a plate heat exchanger 7 through V1 and V4, enters a first cold water tank 8 after heat exchange, flows to water inlets of two groups of circular main pipes through the pumps B5, V7 and V8, enters a gravity type water distributor 5 and a packing layer 6, namely enters an outer tower after being cooled, and is cooled for the second time. Water from the second cold water basin 9 is supplied to the load water supply.
(4) Abnormal mode (insufficient cooling water yield)
The double towers work in parallel, and the two cold water pools are communicated with V9 through siphons. B1, B2, B3/B4 (any 1 of 2 works), V1, V2, V3, V4, V5/V6 (1 valve corresponding to a pump), V9 works. After passing through V1, water in the high-level water tank respectively enters the packed tower through V2 and V3, enters the plate heat exchanger 7 through V4, after the water in the outer tower of the inner tower is subjected to full heat exchange, enters the first cold water tank and the second cold water tank, the electromagnetic valve V9 is opened, the two cold water tanks are communicated through siphoning, and the water yield of cold water is improved. At this time, only one water outlet pump is required to operate.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art should fall within the protection scope of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. A dry-wet composite cooling tower is characterized in that: the high-level water tank is arranged at the top of the outer tower, the water inlet end of the hot water tank is communicated with a hot water source, and the water outlet end of the hot water tank is communicated with the high-level water tank;
the inner tower comprises a plate heat exchanger and an inner tower air duct, the plate heat exchanger is arranged in the inner tower air duct, the top of the inner tower air duct is provided with an axial flow fan, the water inlet end of the plate heat exchanger is connected to the high-level water tank, and the water outlet end of the plate heat exchanger is connected to the first cold water pool;
the outer tower comprises a gravity type water distributor, a packing layer and an outer tower air channel, the gravity type water distributor and the packing layer are both arranged in the outer tower air channel, a plurality of axial flow fans are arranged at the top of the outer tower air channel, the water inlet end of the gravity type water distributor is connected to a high-level water tank, and a second cold water tank is arranged at the bottom of the packing layer.
2. The dry-wet hybrid cooling tower according to claim 1, wherein: two groups of gravity type water distributors and a packing layer are arranged in the outer tower, the two groups of gravity type water distributors and the packing layer are symmetrically arranged on two sides of the inner tower, cold water discs are arranged at the bottoms of the packing layer, and the cold water discs are communicated with a second cold water pool.
3. The dry-wet hybrid cooling tower according to claim 2, wherein: a water receiving tray is arranged around the cold water tray, and the height of a water bar of the water receiving tray is lower than that of the water bar of the cold water tray.
4. The dry-wet hybrid cooling tower according to claim 2, wherein: the edges of the packing layers are provided with water retaining strips, and holes between two adjacent packing layers are arranged in a staggered manner.
5. The dry-wet hybrid cooling tower according to claim 4, wherein: the packing layer comprises a plurality of packing plates, and the surface of each packing plate is plated with a polymer nano layer.
6. The dry-wet hybrid cooling tower according to claim 4, wherein: the gravity type water distributor is an umbrella-shaped spherical water distributor, and comprises a circular main pipe, branch pipes which are communicated with the circular main pipe and are arranged in an umbrella shape, and a spherical shower head arranged on each branch pipe, wherein the circular main pipe is communicated with a high-level water tank and a first cold water tank.
7. The dry-wet hybrid cooling tower according to claim 1, wherein: the plate heat exchanger comprises a plurality of heat exchanger groups arranged side by side, and the heat exchanger groups are connected in series.
8. The dry-wet hybrid cooling tower according to claim 1, wherein: the first cold water pool is connected to the second cold water pool through a siphon and an electromagnetic valve.
9. The dry-wet hybrid cooling tower according to claim 1, wherein: both the inner tower and the outer tower are provided with access passages and access doors.
10. The dry-wet hybrid cooling tower according to claim 1, wherein: the air conditioner also comprises a panel, wherein the lower part of the panel is provided with a louver air guide opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121865414.2U CN215864746U (en) | 2021-08-11 | 2021-08-11 | Dry-wet composite cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121865414.2U CN215864746U (en) | 2021-08-11 | 2021-08-11 | Dry-wet composite cooling tower |
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| Publication Number | Publication Date |
|---|---|
| CN215864746U true CN215864746U (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121865414.2U Active CN215864746U (en) | 2021-08-11 | 2021-08-11 | Dry-wet composite cooling tower |
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| CN (1) | CN215864746U (en) |
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2021
- 2021-08-11 CN CN202121865414.2U patent/CN215864746U/en active Active
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