CN219368450U - Antifreezing cross flow cooling tower - Google Patents

Abstract

The utility model provides an antifreezing type cross flow cooling tower belongs to cross flow cooling tower antifreezing technical field, and this cross flow cooling tower includes: a temperature sensor; and the water distributing disc, the first preheater, the filler and the basin are sequentially arranged from top to bottom; the upper part of the water dispersion disc is communicated with the water inlet of the cooling tower, and the lower part of the water basin is communicated with the water return inlet of the cooling tower; circulating water from the cooling device flows through the water inlet of the cooling tower, the water dispersing disc, the first preheater, the filler, the water basin and the water return port of the cooling tower in sequence to flow back to the cooling device. The device has the advantages of simple structure, low investment cost, no pollution and low investment and high return; the operation is simple, the overhaul difficulty in winter is reduced, and the production efficiency is improved.

Description

Antifreezing cross flow cooling tower

Technical Field

The disclosure relates to the technical field of freezing prevention of cross flow cooling towers, in particular to an antifreezing cross flow cooling tower.

Background

The circulating water cooling tower is a device for cooling and refluxing circulating water to the cooling equipment by radiating heat through a radiating mechanism in the tower after the circulating water is changed into heat by the cooling equipment, so that the circulating water can be recycled, and the circulating water cooling tower can be divided into an open type device and a closed type device according to different radiating structures.

The working principle of the open type cross flow cooling tower is mainly as follows: the cold water exchanges heat through a heat exchanger and other mechanisms of the cooling equipment to generate hot water, the hot water enters a cooling tower water dispersing disc through a water supply pipeline to disperse, and the hot water falls into a basin after being blown by filling wind to cool and returns to the equipment through a water return pipeline. The open type cross flow cooling tower has the advantages of simple structure, low manufacturing cost, convenient maintenance and overhaul and the like, but when the temperature in winter is below zero, the open type cross flow cooling tower is easy to operate under the conditions of filler freezing and basin frost cracking, and has higher maintenance and replacement cost, long period and great difficulty.

In order to solve the anti-freezing problem of the open type cross-flow cooling tower, at present, anti-freezing liquid with different proportions is usually added into circulating water, so that the anti-freezing requirement of the closed type cooling tower under a certain condition in winter can be solved. The problems with this approach are: taking cooling circulating water for engine test as an example, when antifreeze is added in thirty percent, cold winter at minus 15 ℃ is prevented as an example. The circulating water for the cooling equipment pool exceeds 100 tons, at least 30 tons of antifreeze is used, and the operation cost is high; the humidifying precision of an engine test air inlet air conditioner is affected (bad water is required to keep the air inlet humidity of the engine); the circulating water is diluted when the lost water is used, and the proportion of the antifreeze fluid is difficult to ensure; the water containing the antifreeze in the maintenance cleaning water tank is directly discharged to cause environmental pollution.

Disclosure of Invention

One technical problem to be solved by the present disclosure is: how to solve the anti-freezing problem of the cross flow cooling tower with low cost and low pollution.

To solve the above technical problem, an embodiment of the present disclosure provides an antifreezing cross flow cooling tower, including: a temperature sensor; and the water distributing disc, the first preheater, the filler and the basin are sequentially arranged from top to bottom; the upper part of the water dispersion disc is communicated with the water inlet of the cooling tower, and the lower part of the water basin is communicated with the water return inlet of the cooling tower; the circulating water sequentially flows through the water inlet of the cooling tower, the water distributing disc, the first preheater, the filler, the water basin and the water return port of the cooling tower and flows back to realize the recycling of the circulating water. Wherein, circulating water enters the cross flow cooling tower of this antifreeze type through the cooling tower water inlet, and circulating water enters the circulation pipeline through the cooling tower return water inlet.

In some embodiments, the temperature sensor is provided to a basin or a sink or fill. The water basin is used for collecting circulating water cooled by the cooling tower; the filler is used for reducing the temperature of the circulating water; the water dispersing disc is used for dispersing circulating water which needs to be cooled.

In some embodiments, further comprising: a preheater water inlet pipe and a preheater water return pipe; the water inlet pipe of the preheater, the first preheater, the water return pipe of the preheater and the water heating equipment form a preheating circulation loop. The first preheater is used for heating circulating water in the water dispersion disc in winter, so that the phenomenon that the circulating water cannot circulate or the circulating water flowing through the filler is frozen due to the fact that the water temperature is too low due to the fact that the water dispersion disc is frozen is prevented.

In some embodiments, the preheater inlet pipe or the preheater return pipe is provided with an automatic exhaust valve. The automatic exhaust valve is used for exhausting the gas in the hot water circulation system of the preheater.

In some embodiments, the water inlet pipe of the preheater is provided with a first water drain pipeline, the front end of the water inlet pipe of the preheater along the water flow direction is provided with a first electric regulating valve, and the first water drain pipeline is provided with a first water drain valve; the water return pipe of the preheater is provided with a second water drain pipeline, the rear end of the water return pipe of the preheater in the water flow direction is provided with a second electric regulating valve, and the second water drain pipeline is provided with a second water drain valve. Wherein the first and second water drain valves are used for draining water inside the preheater (first preheater and second preheater mentioned below) and the riser (preheater inlet pipe and preheater return pipe). The electric regulating valves (a first electric regulating valve and a second electric regulating valve) are used for controlling the hot water to enter and exit the preheater.

In some embodiments, further comprising: a controller; the controller is respectively connected with the temperature sensor and the first preheater.

In some embodiments, the controller is connected to the first electrically-operated valve and the second electrically-operated valve, respectively.

In some embodiments, the first preheater is provided with a water inlet which is communicated with a water inlet pipe of the preheater, and the first preheater is provided with a water outlet which is communicated with a water return pipe of the preheater.

In some embodiments, the first preheater is a coil, and the inner side wall and/or the outer side wall of the coil is roughened.

In some embodiments, a second preheater is disposed between the filler and the basin; the second preheater is arranged in parallel with the first preheater. The second preheater is used for heating circulating water in the basin in winter to prevent the basin from freezing and cracking or prevent the equipment from stopping production due to too low water temperature.

Through above-mentioned technical scheme, the anti-freezing formula cross flow cooling tower that this disclosure provided includes following beneficial effect:

1. the circulating water flowing to the filler and the basin is preheated by the preheater (the first preheater and the second preheater), so that the condition that the filler, the basin and the like are frozen and cracked when the circulating water is cooled in winter is prevented, the maintenance cost of the antifreezing cross-flow cooling tower is further reduced, compared with the prior art, the antifreezing cross-flow cooling tower is realized through antifreezing solution, and the antifreezing cross-flow cooling tower has the problems of low cost and no environmental pollution and has no difficulty that the antifreezing solution proportion is difficult to ensure; the device has simple structure and low investment cost, and can realize low investment and high return; the operation is simple, the overhaul difficulty in winter is reduced, and the production efficiency is improved.

2. The automatic exhaust valve automatically discharges the gas generated in the preheating pipeline, so that the running stability of the pipeline is ensured, the service life of the preheating pipeline is prolonged, and the running stability and the durability of the preheater are improved. The heat dissipation area of the preheater (the first preheater and the second preheater) is enlarged through the rough surface, so that the heat exchange efficiency of the preheater is improved, and the cost of the heat exchange type preheater is further reduced.

3. The circulating water entering the filler and the circulating water entering the basin are preheated respectively, so that stepped heat exchange of the circulating water is realized, energy consumption required by heat exchange of the circulating water each time is reduced, the preheating temperature of the circulating water each time can be lower, the cooling effect of the circulating water is ensured, the filler can be prevented from freezing, the basin is prevented from frost cracking, and the cost is lower.

4. According to the automatic temperature control device, automatic temperature control is realized through the controller, so that the investment of labor cost is reduced, and staff is liberated; the temperature of the circulating water can be stably controlled through the adjustment of the opening degree of the electric regulating valve (the first electric regulating valve and the second electric regulating valve) and the like, so that the stability and the reliability of the anti-freezing type cross flow cooling tower in winter can be ensured.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

FIG. 1 is a schematic structural view of an antifreeze cross flow cooling tower disclosed in an embodiment of the disclosure;

fig. 2 is a schematic structural view of a first preheater disclosed in an embodiment of the present disclosure.

Reference numerals illustrate:

1. a basin; 2. a filler; 3. a water dispersion disc; 4. a water inlet of the cooling tower; 5. a water return port of the cooling tower; 6. a second preheater; 7. a first preheater; 71. a water inlet; 72. a water outlet; 8. a water inlet pipe of the preheater; 9. a preheater return pipe; 10. a first electrically operated regulator valve; 11. a second electric control valve; 12. a first drain valve; 13. a second drain valve; 14. a temperature sensor; 15. an automatic exhaust valve; 16. a second electrically operated valve communication line; 17. a first electrically operated valve communication line; 18. a temperature sensor communication line; 19. and a controller.

Detailed Description

Embodiments of the present disclosure are described in further detail below with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the disclosure and not to limit the scope of the disclosure, which may be embodied in many different forms and not limited to the specific embodiments disclosed herein, but rather to include all technical solutions falling within the scope of the claims.

The present disclosure provides these embodiments in order to make the present disclosure thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments should be construed as exemplary only and not limiting unless otherwise specifically stated.

In the description of the present disclosure, unless otherwise indicated, the meaning of "plurality" is greater than or equal to two; the terms "upper," "lower," "left," "right," "inner," "outer," and the like indicate an orientation or positional relationship merely for convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present disclosure. When the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

Furthermore, the use of the terms first, second, and the like in this disclosure do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements.

It should also be noted that, in the description of the present disclosure, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the present disclosure may be understood as appropriate by those of ordinary skill in the art. When a particular device is described as being located between a first device and a second device, there may or may not be an intervening device between the particular device and either the first device or the second device.

All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure pertains, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

As shown in fig. 1, an embodiment of the present disclosure provides an antifreeze cross flow cooling tower, including: a temperature sensor 14; and a water dispersing disc 3, a first preheater 7, a filler 2 and a basin 1 which are sequentially arranged from top to bottom; wherein, the upper part of the water dispersing disc 3 is communicated with the upper water port 4 of the cooling tower, and the lower part of the water basin 1 is communicated with the water return port 5 of the cooling tower; the circulating water sequentially flows through the upper water port 4 of the cooling tower, the water dispersing disc 3, the first preheater 7, the filler 2, the basin 1 and the water return port 5 of the cooling tower and flows back to realize the recycling of the circulating water.

In practical application, circulating water cooled by the present disclosure flows to the water dispersion disc 3 through the water inlet 4 of the cooling tower to be distributed after passing through the cooling equipment (including a mechanism such as a heat exchanger, not labeled in the figure) for heating the circulating water, and then sequentially flows through the first preheater 7 (heating the circulating water in winter), the filler 2 (cooling the circulating water), and the basin 1 (collecting the circulating water cooled by the filler 2); finally, the circulating water flows back to the cooling equipment through the cooling tower water return port 5 so as to realize the recycling of the circulating water. In a specific application, the first preheater 7 may be disposed at the bottom of the water dispersion tray 3, and may not affect the dispersion of the circulating water from the water dispersion tray 3 to the filler 2. Of course, the first preheater 7 may be disposed between the water dispersion plate 3 and the filler 2, and the water in the water dispersion plate 3 flows through the first preheater 7 to be preheated and then flows to the filler 2. In other embodiments, the first preheater 7 may be laid on top of the packing 2 to achieve preheating of the circulating water flowing to the packing 2. In winter, when the temperature sensor 14 detects that the ambient temperature or the temperature of the circulating water reaches an empirical value or a set value, the first preheater 7 can be operated to preheat the circulating water and then flow to the filler 2 and the basin 1, so that the phenomenon that the filler 2 is frozen and the basin 1 is frozen and cracked is avoided, the service lives of the filler 2 and the basin 1 are prolonged, the maintenance cost of the antifreezing cross-flow cooling tower is reduced, the maintenance period of the antifreezing cross-flow cooling tower is prolonged, the maintenance difficulty is reduced, the first preheater 7 can preheat the circulating water in a heat exchange or electric heating mode, and the problems of high cost, environmental pollution, humidification precision and incapability of guaranteeing the concentration of the freezing liquid in the prior art can not occur.

In some embodiments, the temperature sensor 14 is provided to the basin 1 or the sink 3 or the filling 2. In other embodiments, the temperature sensor 14 may also be disposed at the outer wall of the present antifreeze cross flow cooling tower, and determine whether to turn on the first preheater 7 by detecting the ambient temperature.

In some embodiments, further comprising: a preheater inlet pipe 8 and a preheater return pipe 9; the preheater inlet tube 8, the first preheater 7, the preheater return tube 9 and the hot water apparatus form a preheating circulation loop. In practical applications, the hot water apparatus may be provided in the present antifreeze cross flow cooling tower as part of its composition. Of course, the hot water apparatus may also belong to not the constituent parts of the present antifreeze cross-flow cooling tower, but the constituent apparatuses of other apparatuses, such as a boiler, an electric heating apparatus, a fuel heating apparatus, or the like.

In some embodiments, the preheater inlet conduit 8 or the preheater return conduit 9 is provided with an automatic exhaust valve 15. In particular, the automatic vent valve 15 is provided on top of the preheater inlet conduit 8 or the preheater return conduit 9, in particular at the preheating line gas collection.

In some embodiments, the water inlet pipe 8 of the preheater is provided with a first water drain pipeline, the front end of the water inlet pipe 8 of the preheater is provided with a first electric regulating valve 10 along the water flow direction, and the first water drain pipeline is provided with a first water drain valve 12; the preheater water return pipe 9 is provided with a second water drain pipeline, the rear end of the preheater water return pipe 9 in the water flow direction of the second water drain pipeline is provided with a second electric regulating valve 11, and the second water drain pipeline is provided with a second water drain valve 13. When the water inflow of the water inlet pipe 8 of the preheater is too large (namely, the preheating temperature is too high), the excessive hot water can be discharged through the first water discharge pipeline and the first water discharge valve 12, so that the current preheating requirement is met. Likewise, the preheating amount is matched with the preheating amount of the circulating water by adjusting the second water drain pipeline and the second water drain valve 13, so that the running stability and reliability of the circulating water preheating type circulating water circulating device are improved. Of course, the matching of the circulating water preheating requirement can also be achieved by the first electrically operated control valve 10 and/or the second electrically operated control valve 11. In practical applications, the opening degree of one or more valve elements of the first electric regulating valve 10, the second electric regulating valve 11, the first water drain valve 12 and the second water drain valve 13 can be adjusted to match the preheating requirement of the circulating water. The flow, heat, residence time, circulation period and the like of the hot water can be adjusted through the valve, so that the preheating amount requirement of the circulating water is matched with the heating amount of the first preheater 7 and/or the second preheater 6 below, the energy waste is avoided, the energy efficiency is improved, and the maintenance cost of the system is reduced.

In some embodiments, as shown in fig. 2, the first preheater 7 is a coil, and the inner side wall and/or the outer side wall of the coil is roughened. In practical application, the coil pipe can be a coiled pipe or a zigzag pipe, a gap which is convenient for circulating water to flow from the water scattering disk 3 to the filler 2 exists between the pipelines, the size of the gap can be set according to practical requirements, and the shape and the size of the coil pipe take the water outlet end of the water scattering disk 3 as a reference. The water inlet 71 of the first preheater 7 is communicated with the preheater water inlet pipe 8, and the water outlet 72 of the first preheater 7 is communicated with the preheater water return pipe 9. Of course, in other embodiments, the first preheater 7 may also be a cavity structure, and the circulating water flows to the packing 2 after being preheated during its residence time. The inner side wall and/or the outer side wall of the coil pipe can be provided with bulges, and the bulges arranged on the inner side wall of the coil pipe can improve the flow resistance, so that the residence time of hot water in the coil pipe is prolonged, and the heat exchange rate is improved; the bulge is arranged on the outer side wall of the coil pipe, so that the contact area of the coil pipe and circulating water can be increased, the heat exchange surface is increased, and the heat transfer rate is improved, and the optimal heat exchange effect is achieved at the lowest cost.

In some embodiments, a second preheater 6 is provided between the filling 2 and the basin 1; the second preheater 6 is arranged in parallel with the first preheater 7. In practical applications, the structure of the second preheater 6 may refer to the outlet structures of the first preheater 7 and the filler 2, and will not be described herein.

In some embodiments, further comprising: a controller 19; the controller 19 is connected to the temperature sensor 14 and the first preheater 7, respectively. In practical application, a control method based on the present disclosure: the controller 19 acquires the temperature detected by the temperature sensor 14, judges whether the temperature meets the starting temperature condition for starting the first preheater 7, and when the starting temperature condition is met, the controller 19 starts the first preheater 7 to preheat the circulating water; when the on-temperature condition is not satisfied, the controller 19 does not operate the first preheater 7. The controller 19 may be a control chip, a PID controller or a PLC controller, and it may exist as a separate control component or as a component of the overall controller of the present antifreeze cross flow cooling tower.

In some embodiments, the controller 19 is connected to the first electrically-operated valve 10 and the second electrically-operated valve 11, respectively. The controller 19 is connected to the first drain valve 12 and the second drain valve 13, respectively. A control method based on the present disclosure: during the operation of the first preheater 7 and the second preheater 6, the temperature detected by the temperature sensor 14 arranged on the water dispersion disc 3, the filler 2 or the basin 1 will change due to the external environmental factors, the temperature and flow of the circulating water, the temperature and flow of the preheating pipeline and other factors, and the controller 19 timely adjusts the flow of the preheating pipeline according to the temperature of the temperature sensor 14, so as to ensure that the heat provided by the preheating pipeline is matched with the circulating water and the antifreezing requirement. Of course, in other embodiments, the first electrically operated valve 10 and the second electrically operated valve 11 are manually adjusted.

In some embodiments, the controller 19 is connected to the temperature sensor 14 via a temperature sensor communication line 18, the controller 19 is connected to the first electrically operated valve 10 via a first electrically operated valve communication line 17, the controller 19 is connected to the second electrically operated valve 11 via a second electrically operated valve communication line 16, the controller 19 is connected to the first drain valve 12 via a first drain valve communication line, and the controller 19 is connected to the second drain valve 13 via a second drain valve communication line. The temperature sensor communication line 18 is used for transmitting temperature signals, and the second electric valve communication line 16, the first electric valve communication line 17, the first drain valve communication line and the second drain valve communication line are used for transmitting control information. Of course, in other embodiments, the adjustment of the first and second drain valves 12, 13 may also be manual.

Thus, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict.

Claims (10)

1. An antifreeze cross flow cooling tower, comprising:

a temperature sensor (14);

the water dispersing disc (3), the first preheater (7), the filler (2) and the basin (1) are sequentially arranged from top to bottom;

the upper part of the water dispersing disc (3) is communicated with a water inlet (4) of the cooling tower, and the lower part of the water basin (1) is communicated with a water return port (5) of the cooling tower; circulating water flows through the upper water port (4) of the cooling tower, the water dispersing disc (3), the first preheater (7), the filler (2), the basin (1) and the water return port (5) of the cooling tower in sequence and flows back to realize the recycling of the circulating water.

2. The antifreeze cross-flow cooling tower of claim 1, wherein the temperature sensor (14) is provided to the basin (1) or the water distribution plate (3) or the filler (2).

3. The antifreeze cross-flow cooling tower of claim 1, further comprising:

a preheater water inlet pipe (8) and a preheater water return pipe (9); the water inlet pipe (8) of the preheater, the first preheater (7), the water return pipe (9) of the preheater and the water heating equipment form a preheating circulation loop.

4. An antifreeze cross-flow cooling tower according to claim 3, characterized in that the preheater inlet pipe (8) or the preheater return pipe (9) is provided with an automatic exhaust valve (15).

5. The antifreeze cross-flow cooling tower according to claim 3, wherein the preheater water inlet pipe (8) is provided with a first water drain pipe, the front end of the preheater water inlet pipe (8) in the water flow direction of the first water drain pipe is provided with a first electric regulating valve (10), and the first water drain pipe is provided with a first water drain valve (12); the water return pipe (9) of the preheater is provided with a second water drain pipeline, the rear end of the second water drain pipeline of the water return pipe (9) of the preheater is provided with a second electric regulating valve (11) along the water flow direction, and the second water drain pipeline is provided with a second water drain valve (13).

6. The antifreeze cross-flow cooling tower of claim 5, further comprising:

a controller (19); the controller (19) is respectively connected with the temperature sensor (14) and the first preheater (7).

7. The antifreeze cross-flow cooling tower of claim 6, wherein said controller (19) is connected to said first and second electrically operated control valves (10, 11), respectively.

8. A cross-flow cooling tower according to claim 3, characterised in that the first preheater (7) is provided with a water inlet (71), the water inlet (71) being in communication with the preheater water inlet pipe (8), the first preheater (7) being provided with a water outlet (72), the water outlet (72) being in communication with the preheater return pipe (9).

9. An antifreeze cross flow cooling tower according to claim 3, wherein the first preheater (7) is a coil, the inner side wall and/or the outer side wall of which is roughened.

10. The antifreeze cross flow cooling tower of any of claims 1-9, wherein a second preheater (6) is provided between the packing (2) and the basin (1); the second preheater (6) is arranged in parallel with the first preheater (7).