阅读说明：本技术 一种开式喷雾型无填料冷却塔 (Open spray type non-filler cooling tower ) 是由 谢茂华 周武平 王彪 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种开式喷雾型无填料冷却塔,包括设置于构架顶部的引风机和设置于构架底部的进风口,在构架内部进风口上方阵列安装布水装置,该布水装置设置为向上喷水,该布水装置上方设置收水器,收水器和布水装置之间设置换热室,回水口设置于框架底部,构架外表面安装外侧板。本发明的开式喷雾型无填料冷却塔能够在低压力下将水雾化,喷射出微小雾滴,增大了喷雾面积能够连续的工作和更新热传播表面积,迅速将潜热由出风口排出,冷凝水由底部的回水口回收循环使用,雾化均匀,风阻小,耐磨损,防腐蚀,不怕烫,特别适用于高温、高蚀、较大机械杂质的循环水。(The invention discloses an open spray type filler-free cooling tower, which comprises an induced draft fan arranged at the top of a framework and an air inlet arranged at the bottom of the framework, wherein a water distribution device is arranged above the air inlet in the framework in an array manner and is arranged to spray water upwards, a water collector is arranged above the water distribution device, a heat exchange chamber is arranged between the water collector and the water distribution device, a water return port is arranged at the bottom of the framework, and an outer side plate is arranged on the outer surface of the framework. The open spray type filler-free cooling tower can atomize water under low pressure to spray micro fog drops, increases the spray area, can continuously work and update the heat propagation surface area, quickly discharges latent heat from the air outlet, recycles condensed water from the water return port at the bottom, has uniform atomization, small wind resistance, wear resistance, corrosion resistance and scalding resistance, and is particularly suitable for circulating water with high temperature, high corrosion and larger mechanical impurities.)

1. The utility model provides an open spray type does not have filler cooling tower which characterized in that, is including setting up in the draught fan at framework top and setting up in the air intake of framework bottom, installs the water distribution device in the inside air intake top array of framework, and this water distribution device sets up to upwards spraying water, and this water distribution device top sets up receives the hydrophone, receives and sets up the heat transfer room between hydrophone and the water distribution device, and the return water mouth sets up in the frame bottom, framework surface mounting outer panel.

Technical Field

The invention belongs to the field of coolers, and particularly relates to an open type spray type filler-free cooling tower.

Background

In a conventional packed cooling tower, hot water is sprayed on packing in the tower to form a water film, and the hot water is cooled by exchanging the water film with air. Practice shows that the cooling tower using the packing has the following disadvantages:

there is a contradiction between ventilation resistance and heat dissipation capacity in the choice of filler. The filler has good heat dissipation capacity and large ventilation resistance; the filler with small ventilation resistance has poor water quality heat dissipation capability.

Along with the increase of the operation time, especially the operation under the condition of bad water quality, calcium magnesium inorganic salt and microorganism in water are continuously adhered to the filler, the filler is blocked, the airflow resistance is increased, the heat dissipation effect is influenced, and the cooling capacity is reduced.

The filler tower is filled with plastic film, and the plastic film is deformed, pressed and aged to break the filler, lose heat dissipation capacity, block pipelines and cause accidents, so that the filler needs to be replaced frequently, and the operation cost is increased.

When water is sprayed on the film type filler, the surface area of the water is fixed, when the water spraying density is increased, the water film is unstable to form fluctuation, the wave amplitude is multiple times of the film thickness, and a channel flow is formed, so that the air flow resistance is increased rapidly. The cooling effect is severely reduced due to the obstruction of the air flow.

Disclosure of Invention

In response to the shortcomings of conventional packed cooling towers noted in the background, the present invention provides an open spray type packless cooling tower.

The invention is realized in such a way that the open spray type non-filler cooling tower comprises a draught fan arranged at the top of a framework and an air inlet arranged at the bottom of the framework, wherein a water distribution device is arranged above the air inlet in the framework in an array manner and is arranged to spray water upwards, a water collector is arranged above the water distribution device, a heat exchange chamber is arranged between the water collector and the water distribution device, a water return port is arranged at the bottom of the framework, and an outer side plate is arranged on the outer surface of the framework.

The open spray type filler-free cooling tower can atomize water under low pressure to spray micro fog drops, increases the spray area, can continuously work and update the heat propagation surface area, quickly discharges latent heat from the air outlet, recycles condensed water from the water return port at the bottom, has uniform atomization, small wind resistance, wear resistance, corrosion resistance and scalding resistance, and is particularly suitable for circulating water with high temperature, high corrosion and larger mechanical impurities.

Drawings

FIG. 1 is a schematic diagram of the operating principle of an open spray type packless cooling tower provided by an embodiment of the present invention;

in the figure: 1. an air outlet; 2. an induced draft fan; 3. a water collector; 4. a heat exchange chamber; 5. a water distribution device; 6. a water inlet; 7. an air inlet; 8. a water return port; 9. an outer panel.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

The structure of the present invention will be described in detail below with reference to the accompanying drawings.

The invention is realized in such a way that the open spray type non-filler cooling tower comprises a draught fan 2 arranged at the top of a framework and an air inlet 7 arranged at the bottom of the framework, a water distribution device 5 (adopting a rotational flow water distributor existing in the market) is arranged above the air inlet 7 in the framework in an array manner, the water distribution device 5 is arranged to spray water upwards, a water collector 3 (adopting a GX140-20 type high-efficiency water collector existing in the market) is arranged above the water distribution device 5, a heat exchange chamber 4 is arranged between the water collector 3 and the water distribution device 5, a water return port 8 is arranged at the bottom of the framework, and an outer side plate 9 is arranged on the outer surface of the framework.

The heat exchange chamber 4 is arranged above the air inlet channel, water atomization has two modes of downstream flow and countercurrent flow, hot water enters the water distribution device 5 from the water inlet 6, a small part of the hot water stays in the heat exchange chamber in a suspension state when the water distribution device 5 sprays, the stay time of the hot water in the tower is prolonged, and sufficient exchange time is provided for cold air and the hot water.

The water distribution device adopts an upward spraying type, the water distribution device is reasonably arranged above an air inlet duct in a distributed mode, mist condenses and falls down at a water receiver 3 at the top (a downward arrow in the figure shows the falling direction), so that mist particles of water have two processes of forward flow and reverse flow in the tower, and part of mist particles are in a suspended state at the upper part of a heat exchange chamber in the tower, so that the retention time of the water in the tower is greatly prolonged, and the heat exchange time of cold air and water is fully ensured (an upward arrow in the figure shows the air flowing direction).

In the embodiment, three packless towers are sequentially provided in a concentrated alkali, hydrochloric acid and chlorine hydrogen cooling system, and the design parameters are as follows: the inlet water temperature is 42 ℃, the average outlet water temperature is 32 ℃, and the designed air wet bulb temperature is 28 ℃.

The field measured data of the non-packed tower and the packed tower are compared as follows:

serial number	Parameter(s)	Packless tower	Packed tower
				1	Atmospheric pressure/Pa	9.93×104	9.93×104
2	Inlet dry bulb temperature/° c	37.5	36
				3	Inlet wet bulb temperature/° c	32.5	30.5
4	Intake relative humidity/%)	64	63.5
				5	Intake air density/(kg/m)3)	1.138	1.103
6	Intake air heat content/(J kg)	106.8	94.2
				7	Temperature of air-out dry bulb/. degree.C	34	31
8	Wet balloon gassing temperature/° c	34	31
				9	Relative humidity of outgas/%)	100	100
10	Density of air output/(kg. nl)	1.103	1.116
				11	Giving off gas and containing heat quantity/(J kg)	125.6	106.8
12	Inlet water temperature/° c	35	31
				13	Temperature of water outlet/. degree.C	31	28
14	Motor voltage/V	380	380
				15	Motor current/A	30	38
16	Power factor	0.9	0.9
				17	Efficiency of the fan	0.82	0.82
18	Transmission efficiency	0.95	0.95
				19	Coefficient of influence of humidity	1.2	1.2
20	Water heat loss/%)	5	5
				21	Total resistance/Pa of cooling tower	78.4	127.4
22	Axial power/kw of fan	14.572	18.457
				23	Cooling air volume/(nl-h)	52.95×10	41.27×10
24	Air carries away heat/(kJ. h)	9025472.1	6291256.4
				25	Amount of Cooling Water/t	567.7	527.2
26	Volume ratio of gas to water	933∶1	783∶1

The gas flow increment of the non-packed tower in the embodiment is 27.6 percent compared with that of the packed tower, and the energy is saved by 26.7 percent

The open spray type filler-free cooling tower can atomize water under low pressure to spray tiny fog drops, increases the spray area, can continuously work and update the heat propagation surface area, quickly discharges latent heat from the air outlet 1, recycles condensed water from the water return port 8 at the bottom, has uniform atomization, small wind resistance, wear resistance, corrosion resistance and scalding resistance, and is particularly suitable for circulating water with high temperature, high corrosion and larger mechanical impurities (the mechanical impurities are less than or equal to 10 mm).

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.