Cooling water device capable of reducing evaporation loss

Abstract

The utility model relates to a cooling water device capable of reducing evaporation loss in the technical field of cooling water treatment, which comprises a cooling box body and an exhaust fan, an exhaust chamber is arranged in the middle of the inside of the cooling box body, a left radiating coil and a right radiating coil are arranged on the left side and the right side of the cooling box body, a left condensing coil and a right condensing coil are symmetrically arranged in the exhaust chamber, and the exhaust fan is positioned at the top of the exhaust chamber. A baffle plate demister is arranged between the exhaust fan and the exhaust chamber, shutter air inlets are formed in the lower portions of the left spraying chamber and the right spraying chamber, a left spraying device and a right spraying device are arranged on the tops of the left spraying chamber and the right spraying chamber, the water inlet end of the spraying pipe network is connected with a circulating water pump, water inlet pipes are connected below the left cooling coil pipe and the right cooling coil pipe, and the left cooling coil pipe and the right cooling coil pipe are correspondingly connected with the left condensing coil pipe and the right condensing coil pipe in series. The left and right condensing coils are connected with a water return pipe. The cooling water device adopts the closed cooling tower, so that cooling water can be ensured to be clean, and evaporation loss of the cooling water is reduced; meanwhile, evaporation water loss of circulating spraying water is greatly reduced, water resource loss is reduced, and the water use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooling water treatment, and in particular relates to a cooling water device capable of reducing evaporation loss. Background Art

[0002] Cooling towers, commonly known as cooling water towers, are important equipment commonly used in industrial production to reduce the temperature of circulating cooling water. According to the structural form of the cooling tower, they are divided into open cooling towers and closed cooling towers. However, regardless of whether it is an open structure or a closed structure, the working principle of the cooling tower is relatively similar. They all achieve the purpose of cooling the circulating cooling water by evaporating heat through spraying water and then accelerating the airflow with a fan to further accelerate evaporation. However, there is an important problem, that is, the evaporation water loss is relatively serious. For enterprise production, this long-term water loss is also a considerable expense and also causes a certain waste of water resources. Although existing cooling towers have also considered adopting certain water-saving measures, mainly setting a demister and other water collection device between the spray system and the accelerating fan in the cooling tower to minimize the water content in the exhaust airflow, thereby achieving the purpose of reducing the evaporation loss of the cooling tower, this water collection measure is relatively simple and the water-saving effect is not ideal. The water loss problem of cooling towers is still quite serious. Therefore, it is necessary to continue to study and explore the evaporation loss problem of cooling towers. Utility Model Content

[0003] In view of the above situation, the utility model provides a cooling water device that can reduce evaporation loss, which can further reduce evaporation water loss in the cooling tower, reduce water resource waste and water use costs.

[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A cooling water device capable of reducing evaporation loss comprises a cooling water pool and a cooling tower body arranged above the cooling water pool, wherein the cooling tower body comprises a cooling box and an exhaust fan, an exhaust chamber is arranged in the middle of the cooling box, and a left spray chamber and a right spray chamber are respectively arranged on the left and right sides of the exhaust chamber.

[0006] The left and right cooling coils are symmetrically arranged in the left and right spray chambers, the left condensing coils and the right condensing coils are symmetrically arranged on the left and right sides of the exhaust chamber, and the exhaust fan is arranged at the top of the exhaust chamber to exhaust the gas in the cooling box into the outside air.

[0007] Ventilation grilles are respectively provided between the left and right spray chambers and the exhaust chambers, a baffle demister is provided between the exhaust fan and the exhaust chamber, louver air inlets are respectively provided at the lower part of the outer walls of the left and right spray chambers, and left and right sprayers are respectively provided at the tops of the left and right spray chambers for spraying water to the left and right radiator coils respectively.

[0008] The water inlet ends of the left and right sprinklers are connected to the spray pipe network, the water inlet end of the spray pipe network is connected to the water outlet end of the circulating water pump, the water inlet end of the circulating water pump is placed in the cooling water pool, the water inlet ends of the lower ends of the left and right radiating coils are connected to the water pipe for inputting cooling water that needs to be cooled, the water outlet ends of the upper ends of the left and right radiating coils are correspondingly connected to the water inlet ends of the left and right condensing coils, and the water outlet ends of the left and right condensing coils are connected to the return pipe for outputting the cooled cooling water.

[0009] Preferably, the bottom of the cooling tower body is mounted above the cooling water pool via a supporting cross arm, the supporting cross arm is a horizontally placed hollow frame structure, and the bottom of the cooling box is connected to the top of the cooling water pool.

[0010] Preferably, a mist-catching net is provided around and on the top of the cooling water pool to capture moisture lost into the air from the cooling water pool and the cooling water tank, and condense it into water droplets, which drip back into the cooling water pool to reduce evaporation loss of water. The mist-catching net is supported by a number of vertical poles spaced apart above the edge of the cooling water pool and covers the cooling water pool.

[0011] Preferably, the water inlet end of the circulating water pump extends to the lower part of the cooling water pool through an upper water pipe, which is used to provide circulating spray water for the spray pipe network. A filter is provided at the bottom end of the upper water pipe to filter the water inlet of the circulating water pump and protect the circulating water pump and the spray pipe network.

[0012] Preferably, the inlet and return pipes are both submerged below the liquid level of the cooling water tank, with the return pipe located below the inlet pipe. The hot water entering the inlet pipe undergoes a preliminary heat exchange with the cool water in the cooling water tank for cooling before entering the cooling tower body for further cooling. This helps reduce the heat exchange burden on the radiator coils and improves cooling efficiency. Due to the principle that hot water rises and cold water falls, the relatively high temperature of the water in the cooling water tank after heat exchange with the inlet pipe will have little impact on the temperature of the cooling water circulating in the return pipe below.

[0013] The present invention also includes other components that enable it to be used normally, which are all conventional means in the field. In addition, devices or components not limited in the present invention, such as: radiator coils, condenser coils, circulating water pumps, spray pipe networks, sprinklers, exhaust fans, ventilation grilles, baffle demisters, mist catching nets, etc., all adopt existing technologies in the field.

[0014] The beneficial effects of the utility model are as follows:

[0015] The utility model provides a cooling water device capable of reducing evaporation loss. The device adopts a closed cooling tower form. The cooling water in the entire cooling water pipe network system and the circulating spray water in the cooling water pool do not contact each other, which helps to ensure the relative cleanliness of the cooling water in the system and is also beneficial to reducing the evaporation loss of the cooling water in the system. On the other hand, for the evaporation of the circulating spray water, the cooling water device removes water through condensation of the condensing coil and dehumidification by the baffle demister before discharging the water out of the cooling tower body through the exhaust fan, thus removing most of the moisture in the exhaust air flow. After finally being discharged into the air, the mist capture net is used again to further capture the small amount of residual moisture in the exhaust air and drip it back into the cooling water pool, thus greatly reducing the loss of evaporated water, thereby achieving the purpose of reducing water resource loss and reducing water use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the cooling water device in the embodiment.

[0017] In the figure: 1. Cooling box; 2. Exhaust fan; 3. Exhaust chamber; 4. Left spray chamber; 5. Right spray chamber; 6. Left cooling coil; 7. Right cooling coil; 8. Left condensing coil; 9. Right condensing coil; 10. Ventilation grille 1; 11. Ventilation grille 2; 12. Baffle demister; 13. Louvered air inlet; 14. Left sprinkler; 15. Right sprinkler; 16. Sprinkler network; 17. Circulating water pump; 18. Inlet water pipe; 19. Return water pipe; 20. Support crossbar; 21. Mist catcher; 22. Vertical pole; 23. Water supply pipe; 24. Filter. DETAILED DESCRIPTION

[0018] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments.

[0019] It should be noted that the terms "up", "down", "front", "back", "left", "right", "inside", "outside", etc. indicating directions or positional relationships are based on the accompanying drawings and are only for the convenience of description.

[0020] Example

[0021] like Figure 1 As shown, a cooling water device that can reduce evaporation loss includes a cooling water pool and a cooling tower body arranged above the cooling water pool. The cooling tower body includes a cooling box 1 and an exhaust fan 2. An exhaust chamber 3 is provided in the middle of the cooling box. A left spray chamber 4 and a right spray chamber 5 are provided on the left and right sides of the exhaust chamber respectively. The interior of the entire cooling box is a bilaterally symmetrical structure with the center line of the exhaust chamber as the center line.

[0022] The left and right spray chambers are symmetrically provided with a left heat dissipation coil 6 and a right heat dissipation coil 7, which are used for spraying heat exchange and cooling the hot water coming in from the water pipe. The left condensation coil 8 and the right condensation coil 9 are symmetrically provided on the left and right sides of the exhaust chamber, which are used for cooling the water vapor evaporated by spraying and cooling and condensing the water in the evaporated water vapor into water droplets during the process of being discharged through the exhaust chamber, and dripping back into the cooling water pool. The exhaust fan is provided at the top of the exhaust chamber, and is used for exhausting the gas in the cooling box to the outside air.

[0023] Ventilation grille 10 and ventilating grille 2 11 in the form of louvers are respectively provided between the left and right spray chambers and the exhaust chamber, and a baffle demister 12 is provided between the exhaust fan and the exhaust chamber. When the water vapor evaporated in the spray chamber enters the exhaust chamber, the moisture content has been reduced by a part of the preliminary demister of the baffle, and then condenses and settles through the condensing coil, and finally passes through another baffle demister to further reduce the moisture content in the exhaust air flow. Ventilation air inlet 13 is provided at the lower part of the outer wall of the left and right spray chambers, which is used to cool the air flow from the spray chamber inside the box to the exhaust chamber and then to the exhaust fan. Left sprayer 14 and right sprayer 15 are respectively provided on the top of the left and right spray chambers, which are used to spray water to the left and right heat dissipation coils respectively. By spraying water on the spray coil and absorbing heat by evaporation, the purpose of heat exchange and cooling of the circulating water in the spray coil is achieved.

[0024] The water inlet ends of the left and right sprinklers are connected to the spray pipe network 16, and the water inlet ends of the spray pipe network are connected to the water outlet end of the circulating water pump 17. The water inlet end of the circulating water pump is placed in the cooling water pool. The water inlet ends of the lower ends of the left and right radiating coils are connected to the water pipe 18, which is used to input cooling water that needs to be cooled from the production workshop. The water outlet ends of the upper ends of the left and right radiating coils correspond to the water inlet ends of the left and right condensing coils connected in series. The water outlet ends of the left and right condensing coils are connected to the return pipe 19, which is used to output the cooled cooling water and send it back to the production workshop.

[0025] The bottom of the cooling tower body is erected above the cooling water pool through a supporting cross arm 20. The supporting cross arm is a hollow frame structure made of horizontally placed square tubes welded together. The bottom of the cooling box is connected to the top of the cooling water pool, and the spray water and condensed water in the cooling box can directly fall back into the cooling water pool.

[0026] A mist-catching net 21 is provided around and on the top of the cooling water pool to capture moisture lost into the air from the cooling water pool and the cooling water tank, and condense it into water droplets, which drip back into the cooling water pool to reduce the evaporation loss of moisture. The mist-catching net is a mesh structure woven from polyethylene flexible material, similar to the mist-catching net used to capture fog and make water in the desert. It adopts existing technology and the specific arrangement is not repeated here. The mist-catching net is supported by a number of vertical poles 22 spaced apart above the edge of the cooling water pool and covers the cooling water pool. At the same time, it also has a certain interception and protection effect, reducing debris such as leaves from falling into the cooling water pool, which is conducive to keeping the water in the cooling water pool clean.

[0027] The water inlet end of the circulating water pump extends to the lower part of the cooling water pool through the upper water pipe 23, which is used to provide circulating spray water for the spray pipe network. The bottom end of the upper water pipe is equipped with a filter screen 24, which is used to filter the water inlet of the circulating water pump, protect the circulating water pump and the spray pipe network, and avoid clogging of the sprinkler.

[0028] The inlet and return pipes are both submerged below the liquid surface of the cooling water pool, and the return pipe is located below the inlet pipe. The hot water coming in through the inlet pipe will initially undergo a heat exchange with the cold water in the cooling water pool to cool it down, and then enter the cooling tower body for further cooling, which helps to reduce the heat exchange burden of the radiator coil and improve the cooling efficiency. Due to the principle that hot water rises and cold water falls, the water in the cooling water pool with a relatively high temperature after heat exchange with the inlet pipe mainly floats on the upper water surface. As the water vapor on the large surface of the water in the cooling water pool evaporates, a large amount of heat is taken away and the water is cooled, which basically does not affect the temperature of the cooling circulating cooling water in the return pipe below.

[0029] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to ordinary technicians in this technical field. Any technical deformation made within the spirit and principles of the present invention falls within the scope of protection of the present invention.

Claims

1. A cooling water device capable of reducing evaporation loss, comprising a cooling water pool and a cooling tower body disposed above the cooling water pool, characterized in that: The cooling tower body includes a cooling box and an exhaust fan, an exhaust chamber is provided in the middle of the cooling box, a left spray chamber and a right spray chamber are provided on the left and right sides of the exhaust chamber respectively, a left heat dissipation coil and a right heat dissipation coil are symmetrically provided in the left and right spray chambers, a left condensation coil and a right condensation coil are symmetrically provided on the left and right sides of the exhaust chamber, an exhaust fan is provided at the top of the exhaust chamber for exhausting the gas in the cooling box to the outside air, a ventilation grille is provided between the left and right spray chambers and the exhaust chamber, a baffle demister is provided between the exhaust fan and the exhaust chamber, and the lower part of the outer wall of the left and right spray chambers A louvered air inlet is provided, and a left sprinkler and a right sprinkler are provided on the top of the left and right spray rooms respectively, which are used to spray water to the left and right radiating coils respectively. The water inlet ends of the left and right sprinklers are connected to the spray pipe network, and the water inlet end of the spray pipe network is connected to the water outlet end of the circulating water pump. The water inlet end of the circulating water pump is placed in the cooling water pool, and the water inlet ends of the lower ends of the left and right radiating coils are connected to the water pipe for inputting the cooling water that needs to be cooled. The water outlet ends of the upper ends of the left and right radiating coils are connected to the water inlet ends of the left and right condensing coils respectively, and the water outlet ends of the left and right condensing coils are connected to the return pipe for outputting the cooled cooling water.

2. A cooling water device capable of reducing evaporation loss according to claim 1, characterized in that: The bottom of the cooling tower body is arranged above the cooling water pool through a supporting crossbeam, and the bottom of the cooling box body is connected with the top of the cooling water pool.

3. The cooling water device capable of reducing evaporation loss according to claim 1, characterized in that: A mist catching net is arranged around and on the top of the cooling water pool. The mist catching net is supported by a plurality of vertical poles spaced apart above the edge of the cooling water pool and covers the cooling water pool.

4. The cooling water device capable of reducing evaporation loss according to claim 1, characterized in that: The water inlet end of the circulating water pump extends to the lower part of the cooling water pool through an upper water pipe, and a filter screen is provided at the bottom end of the upper water pipe.

5. The cooling water device capable of reducing evaporation loss according to claim 1, characterized in that: The inlet water pipe and the return water pipe are both immersed below the liquid surface of the cooling water pool, and the return water pipe is located below the inlet water pipe.

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