CN212253732U

CN212253732U - Energy-saving closed cooling tower

Info

Publication number: CN212253732U
Application number: CN202020472337.3U
Authority: CN
Inventors: 顾洋; 黄国锋
Original assignee: Tianjin Derun Tiancheng Technology Co ltd
Current assignee: Tianjin Derun Tiancheng Technology Co ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-12-29
Anticipated expiration: 2030-04-02

Abstract

The utility model provides an energy-saving closed cooling tower, which relates to the technical field of cooling tower equipment and comprises a tower body, a first spray pipe, water spraying filler, a heat exchange coil, a first air inlet and a second air inlet; the bottom of the tower body is provided with a water return tank, and the top of the tower body is provided with a fan; the water spraying filler is arranged below the first spraying pipe; the heat exchange coil is arranged below the water spraying filler; the first air inlet is positioned between the water spraying filler and the heat exchange coil; the second air inlet is positioned between the heat exchange coil and the water return tank. The utility model provides an energy-saving closed cooling tower effectively cools down through the cooling water of first air intake in to first shower, has improved the heat exchange efficiency between follow-up and the heat exchange coil pipe of cooling water, and the cold air that the second air intake of tower body lower part got into can carry out preliminary forced air cooling to the heat exchange coil pipe, has realized forced air cooling and water-cooled effective combination, has reduced the energy resource consumption among the heat transfer process, has improved the operating efficiency of equipment.

Description

Energy-saving closed cooling tower

Technical Field

The utility model belongs to the technical field of cooling tower equipment, more specifically say, relate to an energy-saving closed cooling tower.

Background

The cooling tower is divided into an open type cooling tower and a closed type cooling tower. The open cooling tower mainly has the defects of large water consumption, high power consumption, large sewage discharge amount, easy scaling and short service life of equipment. The closed cooling tower adopts distilled water as circulating cooling water, is not contacted with air, has low operation and maintenance cost and long service life, and is widely applied.

Although the water consumption of the existing closed cooling tower is greatly reduced, the water cooling effect is relatively poor due to the relatively high temperature of cooling water in the recycling process, on one hand, the heat exchange efficiency is poor, and a large amount of energy is consumed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an energy-saving closed cooling tower to solve the technical problem that closed cooling tower cooling efficiency who exists is low, the energy consumption is big among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: the energy-saving closed cooling tower comprises a tower body, a first spray pipe, water spraying filler, a heat exchange coil, a first air inlet and a second air inlet; the bottom of the tower body is provided with a water return tank, and the top of the tower body is provided with a fan; the first spray pipe is arranged at the top of the tower body and is connected with the water return pool; the water spraying filler is arranged below the first spraying pipe; the heat exchange coil is arranged below the water spraying filler; the first air inlet is arranged on the side wall of the tower body and is positioned between the water spraying filler and the heat exchange coil; the second air inlet is arranged on the side wall of the tower body and is located between the heat exchange coil and the water return pool.

As another embodiment of this application, the top of heat transfer coil still is equipped with the water distribution dish, and the water distribution dish is located the below of first air intake.

As another embodiment of this application, the wet return pond passes through the wet return with first shower and links to each other, is equipped with circulating water pump on the wet return, still is connected with the second shower that is located between heat exchange coil and the water distribution dish on the wet return.

As another embodiment of the application, the first spraying pipe is provided with a plurality of nozzles with downward openings, and the nozzles are provided with tapered water guide plates with downward openings.

As another embodiment of the present application, the first air inlet is a flat opening, the length direction of the first air inlet is arranged along the horizontal direction, and an air deflector inclined upwards from outside to inside is arranged at the first air inlet.

As another embodiment of this application, the second air intake is equipped with two, and the symmetry sets up in the both sides of tower body, and the outside of second air intake is equipped with the air inlet grid of downward sloping, and the inboard of second air intake is equipped with the primary filter.

As another embodiment of this application, the return water pond still is connected with the scale removal pipe, and the export of scale removal pipe upwards sets up.

As another embodiment of this application, energy-saving closed cooling tower still includes the controller, is equipped with the PH detector that is connected with the controller electricity in the return water pond, is equipped with the solenoid valve that is connected with the controller electricity on the scale removal pipe.

As another embodiment of this application, be equipped with the temperature detector who is connected with the controller electricity in the tower body, the fan is connected with the controller electricity.

As another embodiment of the application, a water collector positioned above the first spray pipe is further arranged in the tower body.

The utility model provides an energy-saving closed cooling tower's beneficial effect lies in: compared with the prior art, the utility model provides an energy-saving closed cooling tower utilizes the first air intake of setting at the tower body middle part, effectively cools down the cooling water in the first shower, has improved the heat exchange efficiency between follow-up and the heat transfer coil pipe of cooling water, and the cold air that the second air intake of tower body lower part got into can carry out preliminary forced air cooling to the heat transfer coil pipe, has realized forced air cooling and water-cooled effective combination, has reduced the energy resource consumption among the heat transfer process, has improved equipment operating efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view, partially in cross section, in front view, of a first embodiment of an energy-saving closed cooling tower provided in an embodiment of the present invention;

fig. 2 is a schematic structural view, partially cut away in front view, of an energy-saving closed cooling tower according to a second embodiment of the present invention;

fig. 3 is a schematic view of a portion of the structure in the direction B in fig. 2.

Wherein, in the figures, the respective reference numerals:

100. a tower body; 110. a fan; 120. a water collector; 200. a first shower pipe; 210. a conical water guide plate; 300. water spraying and filling; 400. a heat exchange coil; 410. a water distribution plate; 500. a first air inlet; 510. an air deflector; 600. a second air inlet; 610. a primary filter; 620. an air inlet grille; 700. a second shower pipe; 800. returning to the water tank; 810. a water return pipe; 820. a water circulating pump; 830. a descaling pipe; 831. an electromagnetic valve.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to fig. 3, an energy-saving closed cooling tower according to the present invention will be described. The energy-saving closed cooling tower comprises a tower body 100, a first spray pipe 200, a water spraying filler 300, a heat exchange coil 400, a first air inlet 500 and a second air inlet 600; the bottom of the tower body 100 is provided with a water return pool 800, and the top of the tower body 100 is provided with a fan 110; the first spray pipe 200 is arranged at the top of the tower body 100 and is connected with the water return pool 800; the water spraying filler 300 is arranged below the first spray pipe 200; the heat exchange coil 400 is arranged below the water spraying filler 300; the first air inlet 500 is arranged on the side wall of the tower body 100 and is positioned between the water spraying filler 300 and the heat exchange coil 400; the second air inlet 600 is disposed on a side wall of the tower body 100 and located between the heat exchange coil 400 and the water return tank 800.

The utility model provides a pair of energy-saving closed cooling tower, compared with the prior art, the utility model provides an energy-saving closed cooling tower utilizes the first air intake 500 that sets up at tower body 100 middle part, effectively cools down the cooling water in the first shower 200, has improved the heat exchange efficiency between follow-up and the heat exchange coil 400 of cooling water, and the cold air that the second air intake 600 of tower body 100 lower part got into can carry out preliminary forced air cooling to heat exchange coil 400, has realized forced air cooling and water-cooled effective combination, has reduced the energy resource consumption among the heat transfer process, has improved equipment operating efficiency.

In this embodiment, the water spraying filler 300 is disposed between the first air inlet 500 and the first spray pipe 200, and is used to prolong the retention time of the cooling water in the water spraying filler 300, and the cooling water is fully cooled by using the cold air with a lower temperature entering from the first air inlet 500, so that the cooling water in the first spray pipe 200 is sprayed downwards at a lower temperature, and the sufficient heat exchange with the heat exchange coil 400 is realized. The structure of the packing 300 may be in various forms, such as S-wave, double-oblique wave, and trapezoidal wave, and the packing 300 is a member made of PVC, and has good corrosion resistance, smooth surface, and is not easy to generate scale, thereby facilitating the improvement of the service life of the packing 300. The water spraying filler 300 splashes water to be cooled into water drops or forms a water film for multiple times to increase the contact area with the cold air and prolong the contact time of the two, thereby realizing the cooling effect of the cold air on the water.

The heat exchange coil 400 can be replaced by various heat exchangers such as finned tube heat exchange tubes, wound finned heat exchange tubes, aluminum alloy flat tube brazed finned heat exchange tubes, aluminum tube-through aluminum finned heat exchange tubes and the like.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to fig. 2, a water distribution plate 410 is further disposed above the heat exchange coil 400, and the water distribution plate 410 is located below the first air inlet 500. The setting of water distribution dish 410 has carried out the regularity with the cooling water and has arranged on the inside horizontal working face of tower body 100, is convenient for carry out even effectual cooling to below heat exchange coil 400, guarantees that heat exchange coil 400 each point position can both be covered by the water film of cooling water, has improved heat exchange efficiency.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 2, the water return pool 800 is connected to the first spraying pipe 200 through a water return pipe 810, a water circulating pump 820 is disposed on the water return pipe 810, and the water return pipe 810 is further connected to a second spraying pipe 700 disposed between the heat exchanging coil 400 and the water distribution plate 410. The water collected in the water return pool 800 is recycled to the first spray pipe 200 again, and the water is conveyed from a low position to a high position by the circulating water pump 820, so that the recycling is realized. Because the part of water is not contacted with the outside and a closed circulation mode is adopted, the pollution of water can be avoided, the water source is effectively saved, and the consumption of water resources is reduced.

In this embodiment, in order to realize the quick cooling to heat exchange coil 400, still set up second shower 700 on wet return 810, second shower 700 directly sprays on heat exchange coil 400, combines the spraying of the lower cooling water of temperature in the first shower 200 of top, has further improved the heat transfer effect of cooling water with heat exchange coil 400, has improved the speed of heat transfer, has guaranteed the cooling efficiency of cooling tower.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 2, the first spraying pipe 200 is provided with a plurality of nozzles with downward openings, and the nozzles are provided with tapered water guide plates 210 with downward openings. In the process of exchanging heat with the cooling water in the first spray pipe 200 by the first air inlet 500, the second air inlet 600 also air-cools the heat exchanging coil 400, and in order to avoid the influence of the two wind forces on the falling of the cooling water in the first spray pipe 200, a tapered water guide plate 210 is arranged at the nozzle of the first spray pipe 200. Toper water deflector 210 is the horn mouth form, and top-down diameter grow gradually, when spraying cooling water, has restricted cooling water to fly upwards, has guaranteed the stable whereabouts of cooling water, is convenient for realize that the cooling water is to the effective cooling of below heat exchange coil 400.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to fig. 3, the first air inlet 500 is a flat opening, and the length direction of the first air inlet 500 is set along the horizontal direction, and the air deflector 510 is disposed at the first air inlet 500 and inclines upwards from the outside to the inside. The air of the first air inlet 500 is used for cooling the cooling water, the air quantity of the part does not need to be too large, the occupied area of the first air inlet 500 can be effectively reduced by adopting a flat opening form, and the height of the tower body 100 is convenient to reduce. The length direction of flat mouthful sets up along the horizontal direction, also can guarantee to get into the amount of wind in the tower body 100 relatively even, and upward movement is fully contacted with the cooling water in trickle filler 300 under the effect of fan 110, realizes the effective cooling to water.

Further, the air deflector 510 is arranged to smoothly guide the air to the water spraying filler 300 above, so that the cold air with a lower temperature is sufficiently contacted with the water sprayed in the first spraying pipe 200, and the water is effectively cooled.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to fig. 2, the second air inlet 600 is provided with two air inlets, and the two air inlets are symmetrically disposed at two sides of the tower body 100, the outer side of the second air inlet 600 is provided with the air inlet grille 620 having a downward slope, and the inner side of the second air inlet 600 is provided with the primary filter 610. Under the action of the fan 110 sucking air to the outside, the interior of the tower body 100 is in a negative pressure state, and at the moment, airflow enters the second air inlet 600, passes through the surface of the heat exchange coil 400, and takes away heat on the surface of the heat exchange coil 400. The second air inlets 600 are symmetrically arranged on two sides of the tower body 100, so that air flow entering the tower body 100 is relatively uniform, and the heat exchange coil 400 can be comprehensively cooled by air.

Air-inlet grille 620 sets up in the outside of second air intake 600, can not only lead to the air inlet direction, can also avoid external environment wind to blow the influence that the sun caused to tower body 100 inside simultaneously, avoids the rainwater to get into the inside impurity that causes of tower body 100 and brings in, furthest's improvement the life of equipment.

The use of the primary filter 610 may provide effective filtering of air entering the tower body 100. The primary filter 610 mainly filters dust above 5um, is applied to the prefiltering of air conditioners and ventilation systems, avoids the dust deposition pollution inside the system, and meets the general clean requirement for air.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to fig. 3, the water returning pool 800 is further connected with a descaling pipe 830, and an outlet of the descaling pipe 830 is disposed upward. After equipment operation a period, the normal water in return water pond 800 can have certain scale deposit phenomenon, in order to avoid the scale deposit to the influence that equipment operation caused, need regularly let in the scale remover to the water in return water pond 800, utilizes scale remover and water to react, avoids the accumulation of incrustation scale in other positions of tower body 100, influences the heat exchange efficiency of equipment. Meanwhile, agents such as preservatives can be introduced into the descaling pipe 830, so that the normal operation of the equipment is ensured.

Furthermore, the descaling pipe 830 with an upward opening is convenient for improving the sufficient contact between the descaling agent and water, so that the descaling agent and water are fully mixed, and the effective dissolution of scale is realized.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 3, the energy-saving closed cooling tower further includes a controller, a pH detector electrically connected to the controller is disposed in the water returning pool 800, and a solenoid valve 831 electrically connected to the controller is disposed on the descaling pipe 830. In this embodiment, the pH detector is used to detect the pH value of the water in the water return pool 800, and the detected parameters are transmitted to the controller. The controller compares the received parameter value with a preset value, when the parameter value is larger than the preset value, the fact that descaling treatment is needed is proved, at the moment, the controller sends an instruction to the electromagnetic valve 831, the electromagnetic valve 831 is opened, and the descaling agent in the descaling pipe 830 enters the water return pool 800 to realize descaling of water; when the parameter value is smaller than the preset value, it proves that the descaling process is not needed, at this time, the controller does not send a command to the electromagnetic valve 831, and the electromagnetic valve 831 is in a closed state.

Further, a temperature detector electrically connected with the controller is arranged in the tower body 100, and the fan 110 is electrically connected with the controller. The temperature detector is used for detecting the temperature in the tower body 100 in real time, transmitting the detected temperature value to the controller, comparing the received temperature value with a preset value by the controller, and when the parameter value is greater than the preset value, indicating that the temperature in the tower body 100 is overhigh, and at the moment, sending a control instruction to the fan 110 by the controller, and adjusting the air volume of the fan 110 to a larger value; when the parameter value is smaller than the preset value, the air cooling effect is proved to meet the requirement, at the moment, the controller sends a control instruction to the fan 110, and the air volume of the fan 110 can be properly reduced.

Further, an electric valve for controlling the flow rate of cooling water in the water return pipe 810 may be disposed on the water return pipe 810, and the controller is connected to the electric valve. When the temperature in the tower body 100 is higher than the preset value of the controller, the controller sends a control instruction to the electric valve, and the electric valve is opened to have a larger flow rate, so that the cooling effect on the heat exchange coil 400 is realized; when the temperature in the tower body 100 is smaller than the preset value of the controller, the controller sends a control instruction to the electric valve, the electric valve is adjusted to have smaller flow, an effective cooling effect can be achieved, and energy is effectively saved.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 2, a water collector 120 located above the first spraying pipe 200 is further disposed in the tower body 100. The water collector 120 can effectively recover the water vapor in the tower body 100, and form water drops to the water spraying filler 300, so as to realize the cooling effect on the heat exchange coil 400 below together with the cooling water in the first spraying pipe 200.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Energy-saving closed cooling tower, its characterized in that includes:

the bottom of the tower body is provided with a water return tank, and the top of the tower body is provided with a fan;

the first spray pipe is arranged at the top of the tower body and is connected with the water return pool;

the water spraying filler is arranged below the first spraying pipe;

the heat exchange coil is arranged below the water spraying filler;

the first air inlet is arranged on the side wall of the tower body and is positioned between the water spraying filler and the heat exchange coil; and

and the second air inlet is formed in the side wall of the tower body and is positioned between the heat exchange coil and the water return pool.

2. The energy-saving closed cooling tower of claim 1, wherein a water distribution plate is further disposed above the heat exchange coil, and the water distribution plate is located below the first air inlet.

3. The energy-saving closed cooling tower of claim 2, wherein the water return tank is connected to the first spray pipe through a water return pipe, a circulating water pump is disposed on the water return pipe, and a second spray pipe located between the heat exchange coil and the water distribution plate is further connected to the water return pipe.

4. The energy saving closed cooling tower of claim 1, wherein the first spray pipe is provided with a plurality of downward opening spray nozzles, and the spray nozzles are provided with downward opening conical water guide plates.

5. The energy-saving closed cooling tower of claim 1, wherein the first air inlet is a flat opening, the length direction of the first air inlet is horizontally arranged, and an air deflector inclined upwards from outside to inside is arranged at the first air inlet.

6. The energy-saving closed cooling tower of claim 1, wherein the second air inlet is provided with two air inlets, and the two air inlets are symmetrically arranged at two sides of the tower body, the outer side of the second air inlet is provided with an air inlet grille which is inclined downwards, and the inner side of the second air inlet is provided with a primary filter.

7. The energy-saving closed cooling tower as claimed in claim 1, wherein a descaling pipe is further connected to the water returning pool, and an outlet of the descaling pipe is arranged upward.

8. The energy-saving closed cooling tower as claimed in claim 7, further comprising a controller, wherein a pH detector electrically connected to the controller is disposed in the water returning tank, and the descaling pipe is provided with an electromagnetic valve electrically connected to the controller.

9. The energy-saving closed cooling tower of claim 8, wherein a temperature detector is arranged in the tower body and electrically connected with the controller, and the fan is electrically connected with the controller.

10. The energy-saving closed cooling tower as claimed in claim 1, wherein a water collector is further disposed in the tower body above the first spray pipe.