Large cross-flow closed cooling tower

Abstract

The utility model discloses a large cross-flow closed cooling tower which comprises a supporting framework of a square structure, the supporting framework is installed in a water pool, and air inlets are symmetrically formed in the left side and the right side of the supporting framework; a plurality of heat exchange modules which are arranged in a step shape are installed in the supporting framework, the whole heat exchange modules are of a V-shaped structure, air inlets are formed in the left side and the right side of the V-shaped structure, each heat exchange module comprises a spraying pipe, a heat exchange pipe bundle and filler which are sequentially arranged from top to bottom, and a plurality of nozzles which are evenly distributed are installed at the bottom of each spraying pipe; and an air duct is installed in the middle of the top of the supporting framework, a fan is arranged in the air duct, the fan exhausts air upwards, and a horizontally-arranged water collector is installed between the heat exchange module and the fan. The large-scale cross-flow closed cooling tower provided by the utility model can solve the problem that a plurality of small-scale cross-flow closed towers are operated in parallel to occupy a large area, has the advantages of low energy consumption, low investment and convenience in operation and maintenance, and is particularly suitable for a large-scale circulating water system and a working condition with low approximation degree.

Description

TECHNICAL FIELD

[0001] The utility model relates to a large -scale cross -current closed cooling tower belongs to cooling tower technical field. BACKGROUND

[0002] Closed cooling tower, shortly closed cooling tower, is that the tube heat exchanger is placed in the tower, and the spray water is sprayed to the heat exchange pipe surface evaporation heat exchange reaches the purpose of cooling. Since it is closed cycle, it can guarantee the water quality is not polluted, and the high efficiency operation of the main equipment is well protected, and the service life is improved.

[0003] At present, large -scale closed cooling tower is generally concrete and steel structure counter -flow tower, and the spray water and air counter -heat, the closed cooling tower heat exchange area is big, and the investment cost is high, and the heat exchange effect is poor in summer, especially some water temperature and wet bulb temperature difference difference 5 DEG C within the working condition, the efficiency of counter -flow closed tower is very low.

[0004] At present, the structure of cross -current closed cooling tower is relatively small, and the single device handles the small water volume, and when being used for large -scale circulating water system, multiple devices need to be connected in parallel, and there are problems of large floor area, high fan energy consumption, high investment cost and difficult operation and maintenance. In addition, the cross -current closed cooling tower adopts the wave shape water collector to recover the liquid drops in the wet air flow, and the water collecting mode is water collecting through changing the direction of the wind, and the resistance of the fan is large, and the fan energy consumption is increased.

[0005] From the above, it is obvious that the prior art has inconvenience and defects in actual use, so it is necessary to provide a large -scale cross -current closed cooling tower to solve the bottleneck of the prior art. INVENTION CONTENTS

[0006] The utility model discloses a large -scale cross -current closed cooling tower can solve the problem of large floor area of multiple small -scale cross -current closed tower parallel operation, has the advantages of low energy consumption, investment and convenient operation and maintenance, and is especially suitable for large -scale circulating water system and low degree of approximation working condition.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A large -scale cross -current closed cooling tower, including the square structure's support frame, support frame installs in the water pool inside, and the left and right sides of support frame have the symmetric setting air inlet;

[0009] Support frame inside installation has according to the multiple heat exchange modules of arranging in the ladder shape, and the multiple heat exchange modules are whole V -shaped structure, and the air inlet is located at the left and right sides of V -shaped structure;

[0010] The top middle position of support frame is installed with the wind pipe, and the fan is arranged in the wind pipe, and the fan is upwardly drawn air;

[0011] The water collector is horizontally arranged between the heat exchange module and the fan, and has a honeycomb structure formed by a plurality of water collecting units.

[0012] Further, the bottom of the pool is below the ground, and the top opening end of the pool is above the ground.

[0013] Further, a plurality of circulating water pumps are arranged outside the pool, and the circulating water pumps are arranged on the ground and correspond to the heat exchange modules.

[0014] Further, the support frame is covered with an outer cover plate except the air inlet.

[0015] Further, the fan is supported by a column at the bottom of the fan, and the column is fixed to the bottom of the pool in the vertical direction.

[0016] Further, the water collecting unit comprises an outer hexagonal cylinder, a hollow cylinder is arranged in the hexagonal cylinder, a plurality of blades are arranged between the hexagonal cylinder and the hollow cylinder, the blades are arranged in an inclined manner, and a rotational flow gap is arranged between adjacent blades.

[0017] Further, the heat exchange module comprises a spray pipe, a heat exchange pipe bundle and a filler arranged in sequence from top to bottom, and a plurality of nozzles are arranged at the bottom of the spray pipe.

[0018] Further, the heat exchange pipe bundle has a snake pipe structure, and adjacent heat exchange pipe bundles are arranged in a staggered manner.

[0019] Further, the heat exchange module comprises a spray pipe, a filler and a heat exchange pipe bundle arranged in sequence from top to bottom, and the nozzles at the bottom of the spray pipe uniformly spray water downward to the surface of the filler.

[0020] Further, the heat exchange module comprises a spray pipe, and a filler and a heat exchange pipe bundle arranged in a cross manner in the longitudinal direction.

[0021] The above technical scheme is adopted in the utility model, compared with the prior art, and the following advantages are obtained.

[0022] In the utility model, a plurality of heat exchange modules arranged in a stepped manner are arranged in the tower, the plurality of heat exchange modules have a V-shaped structure, the air inlet is located on the left and right sides of the V-shaped structure, and the plurality of heat exchange modules are distributed in a V-shaped structure, so that the external dry air flowing into the tower can be uniformly and fully heat exchanged with the plurality of heat exchange modules.

[0023] The utility model has the advantages of large water treatment capacity, small land occupation, low investment cost and convenient operation and maintenance, and is particularly suitable for large circulating water systems and low proximity degree working conditions.

[0024] The utility model discloses can use big fan replace multiple small fans, and fan energy consumption saves more than 10%, and maintenance is simpler;

[0025] The water collector in the utility model can centrifugally collect water from saturated wet air, can prevent large water drops from being directly drawn out through the air duct, and can also reduce fan resistance, thereby further reducing fan energy consumption.

[0026] The utility model will be described in detail below with reference to the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the structural schematic diagram of example 1;

[0028] Figure 2 It is the structural schematic diagram of heat exchange module in example 1;

[0029] Figure 3 It is the structural schematic diagram of water collector in example 1;

[0030] Figure 4 It is the structural schematic diagram of each water collection unit of water collector;

[0031] Figure 5 It is the structural schematic diagram of example 2;

[0032] Figure 6 It is the structural schematic diagram of heat exchange module in example 2;

[0033] Figure 7 It is the structural schematic diagram of example 3;

[0034] Figure 8 It is the structural schematic diagram of heat exchange module in example 3.

[0035] In the drawing, 1-fan, 2-spraying pipe, 3-heat exchange pipe bundle, 4-packing, 5-circulating water pump, 6-water pool, 7-outer guard plate, 8-inlet, 9-supporting frame, 10-stand column, 11-water collector, 111-water collection unit, 112-hollow cylinder, 113-blade, 114-cyclone gap, 115-hexagonal cylinder. DETAILED DESCRIPTION

[0036] In order to have more clear understanding on the technical features, purposes and effects of the utility model, the specific implementation mode of the utility model will be explained with reference to the drawings.

[0037] Example 1

[0038] As Figure 1 And Figure 2The utility model provides a large -scale cross flow closed cooling tower, including the support frame 9 of square structure, support frame 9 installs inside the water pool 6, the pool bottom of water pool 6 is located below ground, and the top open end of water pool 6 is located above ground.

[0039] The left and right sides of the support frame 9 are symmetrically provided with air inlets 8, and the rest of the support frame 9 is covered with an outer guard plate 7 except the air inlets 8.

[0040] A wind cylinder is installed at the top middle position of the support frame 9, a fan 1 is arranged in the wind cylinder, the fan 1 draws air upward, and the fan 1 is supported by a vertical column 10 at the bottom thereof, and the vertical column 10 is fixedly connected to the bottom of the water pool 6 in the vertical direction.

[0041] A plurality of heat exchange modules arranged in a stepped manner are installed in the support frame 9, the plurality of heat exchange modules are in a V-shaped structure as a whole, and the air inlets are located at the left and right sides of the V-shaped structure.

[0042] By arranging the plurality of heat exchange modules in a V-shaped structure, it is ensured that the external dry air flowing into the tower can be uniformly and fully heat-exchanged with the plurality of heat exchange modules.

[0043] The heat exchange module comprises a spray pipe 2, a heat exchange pipe bundle 3 and a filler 4 arranged in sequence from top to bottom, a plurality of nozzles are uniformly arranged at the bottom of the spray pipe 2, the nozzles uniformly spray water downward to the surface of the heat exchange pipe bundle 3, and a uniform water film is formed outside the heat exchange pipe bundle 3.

[0044] The heat exchange pipe bundle 3 is in a coiled pipe structure, and adjacent heat exchange pipe bundles 3 are arranged in a staggered manner.

[0045] A plurality of circulating water pumps 5 are installed outside the water pool 6, the circulating water pumps 5 are installed on the ground, the circulating water pumps 5 are arranged in one-to-one correspondence with the heat exchange modules, the inlet end of the circulating water pump 5 is in communication with the water pool 6, and the outlet end of the circulating water pump 5 is connected with the spray pipe 2 through a pipeline. The circulating water pump 5 pressurizes and lifts the water in the water pool 6 into the spray pipe 2.

[0046] A water collector 11 arranged in a horizontal manner is arranged between the heat exchange module and the fan 1, and the water collector 11 is in a honeycomb structure as a whole and is formed by a plurality of water collecting units 111.

[0047] The water collecting unit 111 comprises an outer hexagonal cylinder 115, a hollow cylinder 112 is arranged in the hexagonal cylinder 115, a plurality of blades 113 are uniformly arranged between the hexagonal cylinder 115 and the hollow cylinder 112, the blades 113 are arranged in an inclined manner, and a rotational flow gap 114 is arranged between adjacent blades 113.

[0048] The saturated wet air can be centrifugally collected by the water collector 11, direct large water droplets can be prevented from being drawn out through the wind cylinder, and the resistance of the fan 1 can be reduced.

[0049] The specific working principle of the utility model is as follows:

[0050] The cooled medium enters the heat exchange pipe bundle 3, and the nozzle sprays the water downward uniformly on the surface of the heat exchange pipe bundle 3 to form a uniform water film outside the heat exchange pipe bundle 3. The water film continuously evaporates and vaporizes to absorb the heat of the medium in the pipe, thereby cooling the medium in the pipe. The evaporation of the water film greatly increases the humidity of the air passing through the heat exchange pipe bundle 3 to a near saturation state. The fan 1 draws out the saturated wet air, and most of the sprayed water falls downward to the filler 4 except for a small amount of vaporized water. The dry air from outside flows into the filler 4 from the air inlet 8, evaporates the sprayed water on the surface of the filler 4 to reduce the temperature of the sprayed water, and the unevaporated water falls back to the water pool 6 below. The saturated wet air is drawn away by the top fan 1 after being centrifugally collected by the water collector 11. The sprayed water is pressurized by the circulating water pump 5 and recycled.

[0051] Embodiment 2

[0052] As shown in Figure 3 and Figure 4 The utility model provides a large scale cross flow closed cooling tower, and the difference between embodiment 2 and embodiment 1 lies in that the heat exchange module structures are different.

[0053] The heat exchange module in embodiment 2 comprises the spray pipe 2, the filler 4 and the heat exchange pipe bundle 3 arranged in sequence from top to bottom. The nozzle at the bottom of the spray pipe 2 sprays the water downward uniformly on the surface of the filler 4.

[0054] Embodiment 3

[0055] As shown in Figure 5 and Figure 6 The utility model provides a large scale cross flow closed cooling tower, and the difference between embodiment 3 and embodiment 1 lies in that the heat exchange module structures are different.

[0056] The heat exchange module in embodiment 3 comprises the spray pipe 2 and the filler 4 and the heat exchange pipe bundle 3 arranged in a cross manner along the longitudinal direction.

[0057] The above is an example of the best embodiment of the utility model, wherein the parts not described in detail are the common knowledge of ordinary technical personnel in the art. The protection scope of the utility model is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the utility model is also within the protection scope of the utility model.

Claims

1. A large cross flow closed cooling tower characterized by: Support frame (9) including square structure, support frame (9) is installed inside water pool (6), and the left and right sides of support frame (9) are symmetrically provided with air inlet (8); Support frame (9) is internally provided with multiple heat exchange modules arranged in a stepped manner, and the multiple heat exchange modules are in V-shaped structure as a whole, and the air inlet is located at the left and right sides of the V-shaped structure; The top middle position of support frame (9) is provided with a wind pipe, and the wind pipe is provided with a fan (1) therein, and the fan (1) draws air upward; The water collector (11) is horizontally arranged between the heat exchange module and the fan (1), and the water collector (11) is in honeycomb structure as a whole and is formed by multiple water collecting units (111) being spliced with each other.

2. A large cross flow closed cooling tower as claimed in claim 1, wherein: The bottom of water pool (6) is below the ground, and the top open end of water pool (6) is above the ground.

3. A large cross flow closed cooling tower as claimed in claim 2, wherein: Multiple circulating water pumps (5) are installed outside water pool (6), and the circulating water pumps (5) are installed on the ground, the circulating water pumps (5) are one-to-one correspondingly arranged with the heat exchange modules, the inlet end of circulating water pump (5) is communicated with water pool (6), and the outlet end of circulating water pump (5) is connected with spray pipe (2) through a pipeline.

4. A large cross flow closed cooling tower as claimed in claim 1, wherein: Support frame (9) is covered with an outer guard plate (7) except the air inlet (8).

5. A large cross flow closed cooling tower as claimed in claim 1, wherein: The fan (1) is supported by a column (10) at the bottom thereof, and the column (10) is fixedly connected to the bottom of water pool (6) in the vertical direction.

6. A large cross flow closed cooling tower as claimed in claim 1, wherein: The water collecting unit (111) comprises an outer hexagonal cylinder (115), a hollow cylinder (112) is arranged in the hexagonal cylinder (115), a plurality of blades (113) are uniformly arranged between the hexagonal cylinder (115) and the hollow cylinder (112), the blades (113) are arranged in an inclined manner, and a rotational flow gap (114) is arranged between adjacent blades (113).

7. A large cross flow closed cooling tower as claimed in claim 1, wherein: The heat exchange module comprises, from top to bottom, a spray pipe (2), a heat exchange pipe bundle (3) and a filler (4), and a plurality of nozzles are uniformly arranged at the bottom of the spray pipe (2).

8. A large cross flow closed cooling tower as claimed in claim 7, wherein: The heat exchange pipe bundle (3) is in a coiled pipe structure, and adjacent heat exchange pipe bundles (3) are arranged in a staggered manner.

9. A large cross flow closed cooling tower as claimed in claim 1, wherein: The heat exchange module comprises, from top to bottom, a spray pipe (2), a filler (4) and a heat exchange pipe bundle (3), and the nozzles at the bottom of the spray pipe (2) uniformly spray water downward to the surface of the filler (4).

10. A large cross flow closed cooling tower as claimed in claim 1, wherein: The heat exchange module comprises a spray pipe (2) and a filler (4) and a heat exchange pipe bundle (3) arranged in a cross manner in the longitudinal direction.

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