CN210773522U - Concurrent flow type evaporative condenser - Google Patents
Concurrent flow type evaporative condenser Download PDFInfo
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- CN210773522U CN210773522U CN201921791621.0U CN201921791621U CN210773522U CN 210773522 U CN210773522 U CN 210773522U CN 201921791621 U CN201921791621 U CN 201921791621U CN 210773522 U CN210773522 U CN 210773522U
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- air
- evaporative condenser
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- heat exchanger
- cooling water
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Abstract
The utility model belongs to the technical field of indirect heating equipment, a following current formula evaporative condenser is provided. The concurrent evaporative condenser comprises an air supply device, an air outlet, a water pump, a water collecting area, a demister, a heat exchanger, a spraying device and a shell; the air and the cooling water in the concurrent flow type evaporative condenser flow in the same direction, so that the flow resistance of the air and the cooling water is reduced, and the overall heat exchange efficiency of the heat exchanger is improved; and the air supply device replaces the traditional draught fan, so that the air containing liquid drops is prevented from directly contacting with the draught fan, the service life of the draught fan is prolonged, and the cooling water loss caused by the liquid drops carried by the gas is reduced. The utility model discloses an existing traditional evaporative condenser of following current formula evaporative condenser water conservation, energy-conservation, compact structure, expense low grade advantage have simultaneously reduce the cooling water loss, reduce heat transfer medium flow resistance, and advantages such as extension fan life-span.
Description
Technical Field
The utility model belongs to the technical field of indirect heating equipment, especially indicate a following current formula evaporative condenser.
Background
Currently, in industrial applications, condensers are mainly classified into three types, namely: air-cooled, water-cooled, and evaporative. The evaporative condenser is essentially an air-cooled condenser and a cooling tower structure integrated device, and is widely applied to occasions of enhancing heat exchange and improving the performance of a cooling system.
The evaporative condenser simplifies a cooling water circulation system of the water-cooled condenser, the high air flow speed required by the air-cooled condenser can be obviously reduced, and the water-saving and energy-saving effects are obvious. The evaporative condenser has higher heat transfer coefficient, needs smaller heat exchange area under the condition of the same heat exchange quantity, saves more materials and occupied area, can carry out the heat exchange process under the condition of smaller temperature difference, and reduces the generation of dirt on the wall of the heat exchange pipe, so the evaporative condenser is widely applied to the industries of electric power, seawater desalination, refrigeration and the like.
At present, the existing evaporative condenser generally adopts an induced draft type, namely a counter-flow evaporative condenser with the wind direction and the spray water flowing in the reverse direction. The countercurrent evaporative condenser has good heat and mass transfer performance, but the humidity of air is increased after the air and water carry out heat and mass exchange, and the air can corrode a fan of the induced air evaporative condenser to a certain extent when flowing through an air outlet; meanwhile, the wet air can take away a part of water vapor, so that water loss is caused, and the water consumption of the system is increased; in addition, due to the backflow of air and water, the flow resistance of cooling water and air is obviously increased, and the total energy consumption of the system is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a following current formula evaporative condenser, its purpose has the problem of system water loss in order to reduce current induced draft evaporative condenser, high flow resistance problem and humid air damage fan life-span problem.
The technical scheme of the utility model:
a concurrent evaporative condenser comprises an air supply device 2, an air outlet 5, a water pump 6, a water collecting area 7, a demister 8, a heat exchanger 9, a spraying device 10 and a shell 11;
an air inlet is formed above the shell 11, and the air supply device 2 is arranged at the air inlet and used for bringing air into the evaporative condenser; a spraying device 10 is arranged below the air inlet, a heat exchanger 9 is arranged below the spraying device 10, the heat exchanger exchanges heat with air and spray water flowing downwards, and the spray water which completes heat exchange flows into a water collecting area 7 at the bottom of the evaporative condenser under the action of gravity; an air outlet 5 is formed in the shell 11, the shell 11 is positioned below the heat exchanger 9 and above the water collecting area 7, a demister 8 is mounted on the air outlet 5, the demister 8 separates vapor and liquid in the wet air, the gas is discharged out of the system through the air outlet 5, and the liquid enters the water collecting area 7 downwards; the bottom in the shell 11 is a water collecting area 7, the water collecting area 7 is communicated with an external water pump 6, and cooling water in the water collecting area 7 is discharged out of the evaporative condenser by the water pump 6.
The heat exchanger 9 is a tubular heat exchanger.
The air supply device 2 is a blower.
The utility model has the advantages that: an induced draft fan is replaced by an air blower (or other air supply equipment), so that air and cooling water flow in the same direction, and the problem that in an induced draft type evaporative condenser, partial falling spray water is brought out of the device upwards due to rising of air flow, and the water loss of a system is caused is solved. Moreover, in traditional induced draft type evaporative condenser, air current is after accomplishing the heat transfer, and humidity can increase to some extent, when the great air current of humidity left the system through the fan, can cause great corruption and wearing and tearing to the fan wheel. The utility model discloses a following current formula evaporative condenser adopts top-down's air flow mode, and humid air after the heat transfer no longer leaves the condenser through the fan, but flows through the demister, leaves the system by the air outlet of heat exchanger below, has effectively avoided the corruption of humid air to the fan, has greatly improved the life and the factor of safety of fan. And simultaneously, the utility model discloses in, the shower water is the same with the air current direction, so flow resistance is less, and liquid film flow velocity is very fast on the heat exchanger coil pipe, and this has further strengthened evaporative condenser's heat transfer effect.
Drawings
Fig. 1 is a schematic view of a working flow of a concurrent evaporative condenser according to the present invention.
In the figure: 1 an air inlet; 2, a blower; 3, a steam inlet; 4 a condensate outlet; 5, an air outlet; 6, a water pump; 7 a water collection area; 8, a demister; 9 heat exchanger; 10 a spraying device; 11, a shell.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
Examples
1. The air supply system comprises: air is sent into from the following current formula evaporative condenser top by the air-blower, flows through the heat transfer region after, through demister 8 eduction gear. The air supply volume and the air speed are determined according to the actual requirements of the concurrent evaporative condenser.
2. Cooling water system: the cooling water is distributed to the surface of the heat exchange tube 9 (heat exchange area) by the spray device 10 to form a liquid film, flows from top to bottom under the action of gravity, and is discharged from the water collection area 7 at the bottom of the concurrent evaporative condenser after flowing through the heat exchange area.
3. A heat exchange system: the heat exchange system is divided into three parts, wherein the first part is the heat exchange between a heat exchange tube 9 (heat exchange surface) and cooling water, the cooling water exchanges heat with a heat source in the tube after forming a liquid film on the surface of the heat exchange tube 9 (heat exchange surface), part of the cooling water is evaporated into steam, and the rest of the cooling water which is not evaporated enters a water collection area 7 of the device; the second part is heat exchange between cooling water and air, the cooling water is heated by a heat exchange tube 9 (heat exchange surface) and then continuously exchanges heat with air flowing in the same direction, and most of heat is taken out of the downstream evaporative condenser by the air; the third part is the heat exchange between steam and air, the steam of the cooling water heated and evaporated is carried to the air outlet 5 by the air, during the heat exchange with the air, the condensed liquid drops on the water collecting area 7 at the bottom of the concurrent evaporative condenser, and the uncondensed steam is discharged out of the device through the demister 8.
4. The working process is as follows: air enters the downstream evaporative condenser through the air blower, exchanges heat with cooling water and cooling steam in a heat exchange area respectively to reduce the temperature of the cooling water, condenses part of the cooling steam simultaneously, and carries the tiny droplets of the cooling water and the cooling steam to flow through the demister 8 after the temperature of the air is raised to enter the air outlet 5 to be discharged out of the downstream evaporative condenser. The airborne droplets are separated in the demister 8 into the water collection area 7. Cooling water is distributed on the surface of a heat exchange tube 9 (heat exchange surface) by a spraying device 10 to form a liquid film to exchange heat with a heat source in the heat exchange tube 9, the cooling water is heated and part of steam is evaporated, the heated cooling liquid flows from top to bottom under the action of gravity and exchanges heat with air to reduce the temperature, and the cooling liquid flows through a heat exchange area and enters a water collection area 7 to be discharged out of a concurrent evaporative condenser; the evaporated cooling water vapor flows from top to bottom along with the air and exchanges heat with the air at the same time, the condensed liquid enters the water collecting area 7, and the uncondensed steam flows through the demister 8 and then is discharged out of the concurrent evaporative condenser.
Claims (3)
1. A forward flow type evaporative condenser is characterized by comprising an air supply device (2), an air outlet (5), a water pump (6), a water collecting area (7), a demister (8), a heat exchanger (9), a spraying device (10) and a shell (11);
an air inlet is formed above the shell (11), and an air supply device (2) is arranged at the air inlet and used for bringing air into the evaporative condenser; a spraying device (10) is arranged below the air inlet, a heat exchanger (9) is arranged below the spraying device (10) and exchanges heat with air and spray water flowing downwards, and the spray water which completes heat exchange flows into a water collecting area (7) at the bottom of the evaporative condenser under the action of gravity; an air outlet (5) is formed in the shell (11), the shell (11) is positioned below the heat exchanger (9) and above the water collecting area (7), a demister (8) is installed on the air outlet (5), the demister (8) separates vapor and liquid in the wet air, the gas is discharged out of the system from the air outlet (5), and the liquid enters the water collecting area (7) downwards; the bottom in the shell (11) is a water collecting area (7), the water collecting area (7) is communicated with an external water pump (6), and cooling water in the water collecting area (7) is discharged out of the evaporative condenser through the water pump (6).
2. Concurrent evaporative condenser according to claim 1, characterized by that the heat exchanger (9) is a tubular heat exchanger.
3. Concurrent evaporative condenser according to claim 1 or 2, characterized by that the air supply means (2) is a blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791621.0U CN210773522U (en) | 2019-10-24 | 2019-10-24 | Concurrent flow type evaporative condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791621.0U CN210773522U (en) | 2019-10-24 | 2019-10-24 | Concurrent flow type evaporative condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210773522U true CN210773522U (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921791621.0U Active CN210773522U (en) | 2019-10-24 | 2019-10-24 | Concurrent flow type evaporative condenser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210773522U (en) |
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2019
- 2019-10-24 CN CN201921791621.0U patent/CN210773522U/en active Active
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