CN115682762A - A closed cooling tower with antifreeze structure - Google Patents

Abstract

The application provides a closed cooling tower with an antifreeze structure, which relates to the technical field of cooling towers. A closed cooling tower with an antifreeze structure includes a cooling tower assembly, the first closing member is symmetrically arranged on the outer wall of the tower body, the second closing member is symmetrically arranged on the inner wall of the tower body, and the filter element is arranged on the tower body The inner bottom of the tower body, using the closing of the first closing member and the second closing member, ensures to a certain extent that the temperature inside the tower body will not drop sharply. Remove the water as much as possible to prevent the residual water inside from freezing at low temperature, which will interfere with the next use. At the same time, to a certain extent, it avoids various microorganisms brought in by the air circulation, and grows mosses such as mosses under the irradiation of light. , causing the ventilation of the cooling tower to be blocked.

Description

A closed cooling tower with antifreeze structure

technical field

The application relates to the field of cooling towers, in particular, to a closed cooling tower with an antifreeze structure.

Background technique

Generally speaking, a closed cooling tower (also called an evaporative air cooler, a closed cooling tower or a closed cooling tower) is a tube heat exchanger placed in the tower, through the circulating air, the spray water outside the tube and the circulation inside the tube. The heat exchange of water ensures the cooling effect. Since the circulating water is a closed loop in the pipe, it can ensure that the water quality is not polluted, which protects the efficient operation of the main equipment and improves the service life. When the outside temperature is low, it can be stopped. The spray water system has the effect of saving water. With the implementation of energy saving and emission reduction policies and the increasing scarcity of water resources, closed cooling towers have been widely used in iron and steel metallurgy, power electronics, machining, air conditioning systems and other industries in recent years. Applications.

In the related art, the closed cooling tower used in the severe cold season or in the severe cold area, after the cooling tower is closed, the circulating water in the cooling tower is easy to freeze and condense due to the invasion of the external cold current, which seriously affects the next time of the closed cooling tower. Use, and the water will condense into ice to form expansion, which is likely to cause the pipes in the cooling tower to burst, and after the cooling tower is used for a long time, it is very easy to carry into various Microorganisms cause the growth of moss and other moss plants in the cooling tower, which affects the ventilation effect of the cooling tower and easily blocks the spraying device in the cooling tower.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the prior art. To this end, the application proposes a closed cooling tower with an antifreeze structure. When the closed cooling tower with an antifreeze structure is used in severe cold seasons or in severe cold regions, after the use is completed, the first closing member and the second closing member are closed. The closure of the second closure makes the tower body form a certain degree of sealing effect, reduces the erosion of the external cold current on the inside of the tower body, and ensures to a certain extent that the temperature inside the tower body will not drop sharply, and at the same time uses external pressure equipment to exchange heat The water in the tank and the water collecting tank at the bottom of the tower body should be removed as much as possible to avoid the residual water inside the tower body freezing at low temperature after a long time, which will interfere with the next use and even cause damage to the internal components of the tower body.

The application proposes a closed cooling tower with an antifreeze structure, including a cooling tower assembly, the cooling tower assembly includes a tower body, a heat exchanger, a spraying tool and a fan, and the heat exchanger is arranged in the tower body , the spraying tool is arranged on the top side of the heat exchanger, the fan is connected to the top of the tower body, wherein a temperature sensor is arranged on the tower body, and the temperature sensor is used to control the spraying tooling start and stop, the inner bottom of the tower body is provided with a water collection cabin, and the water collection cabin communicates with the input end of the spray tooling, and also includes:

An antifreeze assembly is arranged on the tower body;

The antifreeze assembly includes a first closing element, a second closing element and a filter element, the first closing element is symmetrically arranged on the outer wall of the tower body, and the second closing element is symmetrically arranged on the inner wall of the tower body, And the second closing part is compatible with the first closing part, and the filter part is arranged at the inner bottom of the tower body.

According to an embodiment of the present application, a closed cooling tower with an antifreeze structure has the beneficial effect of: using the closing of the first closing member and the second closing member, the tower body forms a certain degree of sealing effect, which reduces the impact of the external cold current on the closed cooling tower. The erosion inside the tower body ensures to a certain extent that the temperature inside the tower body will not drop sharply. At the same time, the external pressure equipment is used to remove the water in the heat exchanger and the water collecting chamber at the bottom of the tower body as much as possible to avoid a long time Afterwards, the residual water inside the tower body will freeze at low temperature, which will interfere with the next use, and even cause damage to the internal components of the tower body. At the same time, it will prevent the various microorganisms brought in by the air circulation from growing and sinking under the irradiation of light to a certain extent. Mosses such as mosses can block the ventilation of the cooling tower, and the presence of mosses, especially in the water collecting tank, is more likely to cause mosses to form in the water collecting tank, causing blockage or even damage to the spraying equipment.

In addition, a closed cooling tower with an antifreeze structure according to the embodiment of the present application also has the following additional technical features:

In some specific embodiments of the present application, air inlet windows are arranged symmetrically on the side walls of the tower body, and filter screens are slidably inserted into the air inlet windows.

In some specific embodiments of the present application, the water inlet of the heat exchanger is arranged above the water outlet, and the heat exchanger is fixed to the inner wall of the tower body through a fixing frame.

In some specific embodiments of the present application, the heat exchanger adopts a copper tube, and the section of the copper tube in the height direction of the heat exchanger is designed with a regular downward slope.

In some specific embodiments of the present application, the spraying tooling includes a spray pump, a spray pipe and a spiral nozzle, the water inlet end of the spray pump is fixedly connected to the water collecting compartment, and the spray pump The water outlet end is fixedly connected with the spray pipe, the spray pipe is fixedly connected to the top side of the heat exchanger, the spiral nozzle is set in multiples, and the multiple spiral nozzles are fixedly connected to the spray nozzle. The tubes face the side of the heat exchanger.

In some embodiments of the present application, the first closing member includes a cover plate, a chute, a limit hole, a baffle plate, a handle, a limit bolt and a tension spring, and the cover plate is fixed to the tower body The outer wall of the chute is arranged symmetrically, the chute is set on the cover plate, the limit hole is set on the cover plate, the baffle is slidably inserted into the cover plate, the The handle is fixedly connected to the baffle, the handle is slidably matched with the chute, the limit bolt is inserted into the handle, the limit bolt is matched with the limit hole, the Both ends of the tension spring are fixedly connected to the handle and the limit bolt respectively.

In some embodiments of the present application, the second closing member includes a gantry frame, a T-shaped bar and a leaf plate, the gantry frame is arranged on the inner wall of the tower body, and the T-shaped bar is fixed to the gantry frame, and the T-shaped bar is slidably inserted into the inner wall of the tower body, and the leaf plate is rotatably connected to the portal frame.

In some embodiments of the present application, the leaf boards are evenly arranged along the height direction of the gantry frame, and a plurality of the leaf boards are superimposed on each other.

In some embodiments of the present application, the filter element includes a water collection hatch, a filter plate and a filter box, the water collection hatch is fixed to the inner wall of the tower body, and the filter plate is fixed to the collection At the bottom of the water hatch, the filter box is sealed and slidably arranged on the side of the tower body close to the filter plate, and the filter box and the filter plate are connected.

In some embodiments of the present application, the water collecting hatch cover is arranged obliquely, and one side of the water collecting hatch close to the filter box is lower than the other side.

In some embodiments of the present application, a water-absorbing assembly is provided between the spraying tool and the fan, the water-absorbing assembly includes a water-absorbing cabin and a telescopic piece, and the water-absorbing cabin is fixed to the inner wall of the tower body, so There are multiple telescopic elements, fixed ends of the plurality of telescopic elements are affixed to the inner top of the tower body, and output ends of the telescopic elements are affixed to the upper surface of the water suction chamber.

In some embodiments of the present application, the bottom of the water-absorbing cabin is hollowed out, and the inner bottom of the water-absorbing cabin is provided with water-absorbing parts and mesh panels in turn, and the water-absorbing parts are arranged on the inner bottom of the water-absorbing cabin and the inner bottom of the water-absorbing cabin. Between the mesh plates, the mesh plates are fixedly connected to the output end of the telescopic element.

In some embodiments of the present application, a T-shaped block is fixedly connected to the peripheral side of the mesh plate, and the T-shaped block is limited and slides on the inner wall of the water suction chamber.

In some embodiments of the present application, a preheating assembly is provided on the tower body, and the preheating assembly includes an air pump and an exhaust pipe, the air pump is fixedly connected to the tower body, and one end of the exhaust pipe is fixed It is connected to the output end of the air pump, and the other end of the exhaust pipe is arranged between the heat exchanger and the filter element.

In some embodiments of the present application, one end of the exhaust pipe arranged in the tower body is fixedly connected with a plurality of exhaust nozzles, and the plurality of exhaust nozzles are arranged on the exhaust pipe toward the heat exchange side of the device.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

During use, the water vapor formed by heat exchange inside the tower will discharge part of the cooling water to the outside of the tower through the fan, resulting in waste of water resources. In order to avoid water resources as much as possible Most of the water absorption equipment is installed on the top of the tower body, and the water vapor forms condensed water in the water absorption equipment, and then drops to the water collection chamber at the bottom of the tower body for resource reuse. However, in the severe cold environment, the water absorption equipment The large amount of water contained in the tower will condense into ice at the gradually decreasing temperature, which will block the entire water absorption equipment, and will make the fan unable to pump air inside the tower body, seriously affecting this kind of antifreeze structure. The later use of the closed cooling tower.

By starting the expansion part, the mesh plate is driven to slide up and down in the water absorption chamber through the T-shaped block, and the water absorption part at the bottom is repeatedly squeezed, so that the condensed water formed in it is squeezed out and drips to the tower. The bottom of the body, to a certain extent, ensures that there is as little water in the water-absorbing part as possible, avoiding the blockage of the inside of the water-absorbing part due to excessive water content, so that the airflow cannot pass through the water-absorbing part, causing the cooling tower to fail to exhaust, and at the same time Avoid as much as possible in a cold environment. After the cooling tower is stopped, it will condense into ice due to the rich water in the water absorbing part, which will affect the later use of the closed cooling tower.

After the stop of use, the heat exchanger, the water collecting tank and the water-absorbing parts in it are drained, which can reduce the condensation of the remaining water into ice to a certain extent, and then affect the use of the closed cooling tower. However, the heat exchange There will be more or less residual water on the outer wall of the copper tube of the device, the spiral nozzle on the spray tooling and the water-absorbing parts, and the residual water will gradually form a frozen layer inside the tower body as the temperature drops. If the frozen layer is not pretreated, the closed cooling tower with an antifreeze structure will be opened directly, which will cause the temperature of the heat exchanger to rise sharply, which will endanger the service life of the heat exchange air, and the cooling tower will be damaged due to the operation of the fan. Negative pressure is formed inside the body, which is easy to cause certain damage to the water-absorbing parts.

Before using this kind of closed cooling tower with anti-freezing structure, the heat source (hot air flow) can be connected externally through the air pump, and sent to multiple exhaust nozzles through the exhaust pipe, and then the multiple exhaust nozzles blow the hot air flow to the heat exchanger. The inside of the tower body and the inside of the tower body melt the frozen layer formed by the residual water body inside the tower body, and at the same time preheat the copper tubes of the heat exchanger to a certain extent to avoid the need for circulation of the heat exchanger during normal use. The high temperature liquid causes its temperature to rise suddenly from the low temperature state, which avoids the damage of the copper tube on the heat exchanger, and after melting the frozen layer, the water absorbing part forms a breathable state, which is convenient for the normal exhaust of the fan.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, so It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a kind of overall structure schematic diagram of the fluid cooling tower with antifreezing structure according to the embodiment of the application;

Fig. 2 is a schematic diagram of the internal structure of a closed cooling tower with an antifreeze structure according to an embodiment of the present application;

Fig. 3 is the structural exploded view of the cooling tower assembly according to the embodiment of the application;

Fig. 4 is a schematic structural diagram of a heat exchanger according to an embodiment of the present application;

Fig. 5 is a schematic diagram of the position of the antifreeze assembly according to the embodiment of the present application;

Fig. 6 is an exploded view of the structure of the first closure according to the embodiment of the present application;

Fig. 7 is an exploded view of a partial structure of a first closure according to an embodiment of the present application;

Fig. 8 is a structural exploded view of a second closure according to an embodiment of the present application;

Fig. 9 is an exploded view of the structure of a filter element according to an embodiment of the present application;

Fig. 10 is a schematic structural view of a water-absorbing assembly according to an embodiment of the present application;

Fig. 11 is a structural exploded view of a water-absorbing assembly according to an embodiment of the present application;

Fig. 12 is a schematic structural diagram of a preheating assembly according to an embodiment of the present application.

Icons: 100, cooling tower assembly; 110, tower body; 111, air inlet window; 112, filter screen; 120, heat exchanger; 121, water inlet; 122, water outlet; 123, fixed frame; 130, spray tooling ; 131, spray pump; 132, spray pipe; 133, spiral nozzle; 140, fan; 200, antifreeze assembly; 210, first closure; 211, cover plate; 212, chute; 214, baffle plate; 215, handle; 216, limit bolt; 217, extension spring; 220, second closing member; 221, gantry frame; 222, T-shaped bar; 223, page plate; 230, filter member; 231 , water collection hatch cover; 232, filter plate; 233, filter box; 300, water absorption component; 310, water absorption cabin; 311, water absorption part; Heat component; 410, air pump; 420, exhaust pipe; 430, exhaust nozzle.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the application. Obviously, the described embodiments It is a part of embodiment of this application, and is not all embodiment. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

As shown in Figures 1-12, a closed cooling tower with an antifreeze structure according to an embodiment of the present application includes a cooling tower assembly 100, and the cooling tower assembly 100 includes a tower body 110, a heat exchanger 120, and a spray tooling 130 And the fan 140, the heat exchanger 120 is arranged in the tower body 110, the spray tool 130 is arranged on the top side of the heat exchanger 120, the fan 140 is connected to the top of the tower body 110, and is used to discharge the heat inside the tower body 110, and discharge The wet hot water vapor generated between the spray tool 130 and the heat exchanger 120, wherein the tower body 110 is provided with a temperature sensor, the temperature sensor is used to control the start and stop of the spray tool 130, specifically, the temperature sensor is set to multiple, A plurality of temperature sensors transmit the detected internal temperature of the tower body 110 and the temperature of the liquid discharged from the heat exchanger 120 to the external control cabinet, and the control cabinet controls the start and stop of the spray tooling 130 as required, so that the spray tool 130 is in the tower Stop the spray tooling 130 when the temperature inside the tower body 110 is low, and turn on the spray tooling 130 when the temperature is high, so as to increase the heat dissipation efficiency of the heat exchanger 120 inside the tower body 110 and control the discharge of liquid in the heat exchanger 120 temperature, the bottom of the tower body 110 is provided with a water collection chamber, which is connected to the input end of the spray tooling 130 for recycling water resources, and also includes: antifreeze assembly 200, water absorption assembly 300 and preheating assembly 400.

Furthermore, the side of the tower body 110 is designed with a ladder and a maintenance door. The ladder is convenient for the staff to maintain the equipment at the top of the tower body 110 , and the design of the maintenance door is convenient for the staff to maintain the equipment inside the tower body 110 .

It should be noted that the sealing fit between the maintenance door and the tower body 110 guarantees the airtightness of the tower body 110 to a certain extent, and prevents the inside of the tower body 110 from being eroded by external cold airflow.

Further, the tower body 110 is set on the side wall of the water collection chamber, and is provided with a water inlet valve and a discharge valve, wherein, the water collection chamber has a built-in float valve, which is convenient for controlling the water level in the water collection chamber and adding water to the water collection chamber. Or drain the water.

Wherein the tower body 110 is provided with an antifreeze assembly 200 .

The antifreeze assembly 200 includes a first closing member 210, a second closing member 220 and a filter member 230. The first closing member 210 is symmetrically arranged on the outer wall of the tower body 110 for sealing the tower body 110 to a certain extent. The second closing member 220 is symmetrically arranged on the inner wall of the tower body 110, and the second closing member 220 is compatible with the first closing member 210, and the two cooperate with each other to make the tower body 110 form a certain airtight effect as much as possible. The filter member 230 is arranged on the tower The inner bottom of the body 110 is used to filter the circulating water in the water collecting tank, so as to avoid blocking of the spray tooling 130.

The following describes the use process of a closed cooling tower with antifreeze structure according to the embodiment of the application with reference to the accompanying drawings:

During normal use, the fan 140 is started, and the fan 140 discharges the gas inside the tower body 110 to the outside. 220 position pours in to form a high-speed air flow inside the tower body 110, and the higher temperature liquid that needs to be heat exchanged is transported to the heat exchanger 120 inside the tower body 110 through an external pressure device, and passes through the tower body 110. Flow and contact with the wind fluid to exchange heat, so that the temperature of the liquid passing through the heat exchanger 120 drops, and at the same time, the temperature sensor detects the temperature inside the tower body 110 and the temperature of the liquid at the discharge end of the heat exchanger 120. According to the result of the detected temperature To start and stop the spray tool 130, if the discharged liquid is high, start the spray tool 130 through the external control cabinet to draw water from the water collection cabin to spray the heat exchanger 120, and use the formed vertical downward high-speed movement Spray small water droplet particles to increase the surface area of the water droplets. At the same time, the water droplets cover the heat exchanger 120 and absorb the heat inside the heat exchanger 120 to form water vapor, which is discharged from the tower body 110 through the fan 140 following the airflow, and the water droplets are still in the process of falling. It will encounter the airflow of the upper body, which delays the falling speed of the water droplets, thereby prolonging the time of heat exchange and increasing the effect of heat exchange. When using in severe cold seasons or in severe cold regions, after the use is completed, close the first closing member 210 and The second closing member 220 is closed, so that the tower body 110 forms a certain degree of sealing effect, reduces the erosion of the external cold current on the inside of the tower body 110, and ensures to a certain extent that the temperature inside the tower body 110 will not drop sharply. The pressure equipment removes the water in the heat exchanger 120 and the water collecting chamber at the bottom of the tower body 110 as much as possible, so as to avoid the residual water inside the tower body 110 from freezing at low temperature after a long time, which will interfere with the next use, and even cause the tower The internal components of body 110 are damaged.

In addition, a closed cooling tower with an antifreeze structure according to the embodiment of the present application also has the following additional technical features:

It should be noted that air inlet windows 111 are arranged symmetrically on the side walls of the tower body 110, and filter screens 112 are slidably inserted into the air inlet windows 111. The debris in the filter plays a certain filtering effect, and secondly, it is convenient to disassemble and clean the filter screen 112.

Wherein, the water inlet 121 of the heat exchanger 120 is arranged above the water outlet 122 , and the heat exchanger 120 is fixed to the inner wall of the tower body 110 through a fixing frame 123 .

It should be noted that the heat exchanger 120 uses copper tubes, and the section of the copper tubes in the height direction of the heat exchanger 120 is designed to be inclined downwards regularly. The heat transfer effect of the copper tubes is better, which can improve At the same time, the regular downward-sloping design of the copper tube allows the liquid in it to flow out of the water outlet 122 under the action of gravity, avoiding residual liquid in the heat exchanger 120 inside the tower body 110, Especially in a cold environment, after the closed cooling tower stops working, it can avoid freezing due to excess liquid in it, blockage and even rupture of the copper tube due to increase in liquid freezing process.

Further, the spray tooling 130 includes a spray pump 131, a spray pipe 132 and a spiral nozzle 133, the water inlet end of the spray pump 131 is fixedly connected to the water collecting tank, and the water outlet end of the spray pump 131 is fixedly connected with a spray pipe 132, the spray pipe 132 is fixed on the top side of the heat exchanger 120, and there are multiple spiral nozzles 133, and the multiple spiral nozzles 133 are fixed on the side of the spray pipe 132 facing the heat exchanger 120, and the spiral nozzle 133 can The water pumped by the spray pump 131 is sprayed out in tiny droplets to form a mist, and the spiral nozzle 133 can avoid clogging to a certain extent due to its own internal structure design, and the sprayed water mist will increase the heat exchange. The area increases the efficiency of heat exchange.

Further, the first closing part 210 includes a cover plate 211, a chute 212, a limit hole 213, a baffle plate 214, a handle 215, a limit bolt 216 and a tension spring 217, and the cover plate 211 is fixed on the outer wall of the tower body 110 , A cavity is formed between the cover plate 211 and the outer wall of the tower body 110, the chute 212 is arranged symmetrically, the chute 212 is set on the cover plate 211, the limit hole 213 is set on the cover plate 211, and the baffle plate 214 is slidably inserted into the cover In the cavity formed between the plate 211 and the outer wall of the tower body 110, the handle 215 is fixed to the baffle plate 214, the handle 215 and the chute 212 are slidably matched, the limit bolt 216 is inserted into the handle 215, and the limit bolt 216 Compatible with the limit hole 213, the two ends of the tension spring 217 are fixedly connected to the handle 215 and the limit bolt 216 respectively. 211 itself causes the air inlet window 111 to form a closed state, wherein the baffle plate 214 is not smaller than the opening size of the air inlet window 111, so that the baffle plate 214 can block the air inlet window 111. It can be understood that by pulling the limit bolt 216 and the tension of extension spring 217, when the stop bolt 216 and the stop hole 213 are plugged together, the baffle plate 214 is located above the air inlet window 111, that is, the air inlet window 111 is in an open state. And the limit bolt 216 breaks away from the limit hole 213 , at this moment, the baffle plate 214 can move downward along the chute 212 until the wind inlet window 111 is blocked.

Specifically, the baffle plate 214 can be set as a sliding seal between the cover plate 211 and the tower body 110, so as to further ensure the sealing performance of the tower body 110 and reduce the erosion of external cold currents.

Further, the second closing member 220 includes a gantry 221, a T-shaped bar 222 and a leaf plate 223, the gantry 221 is arranged on the inner wall of the tower body 110, the T-shaped bar 222 is fixed to the gantry 221, and the T-shaped bar 222 slides Plugged into the inner wall of the tower body 110 , it facilitates the installation or disassembly of the second closing member 220 inside the tower body 110 , and facilitates subsequent cleaning of the leaf plate 223 , which is rotatably connected to the gantry 221 .

Further, the leaf boards 223 are evenly arranged along the height direction of the gantry frame 221 , and a plurality of leaf boards 223 are superimposed on each other. It should be noted that, when the leaf boards 223 are superimposed on each other, they will completely cover the air intake window 111 .

It can be understood that the leaf plates 223 in the initial state will form a state of overlapping each other under the action of their own weight, and the air inlet window 111 at this time will form a blocked state, so that external light is prevented from shining on the inside of the tower body 110 At the same time, to a certain extent, it avoids the various microorganisms brought in by the air circulation, and grows mosses such as mosses under the irradiation of light, causing the ventilation of the cooling tower to be blocked, and because of the existence of mosses, especially in the water collection In the cabin, the spray pipe 132 and the spiral nozzle 133 in the cooling tower will be blocked. Similarly, when not in use, the stacked leaf plates 223 cooperate with the baffle plate 214 to form a double blockage for the air inlet window 111. It can effectively slow down the temperature drop rate inside the tower body 110, avoiding the freezing phenomenon of the residual water inside the tower body 110 during the discharge process, and in the normal use process, the air flow will pass through the air from the outside due to the suction effect of the fan 140 The windows 111 rush to the inside of the tower body 110, and under the action of pressure, the overlapping leaf plates 223 will rotate on the gantry 221 to form an open state, so the air flow at this time can circulate normally.

It should be noted that the filter element 230 includes a water collecting hatch 231, a filter plate 232 and a filter box 233, the water collecting hatch 231 is fixed on the inner wall of the tower body 110, the filter plate 232 is fixed on the bottom of the water collecting hatch 231, The filter box 233 is sealed and slidably arranged on the side of the tower body 110 close to the filter plate 232, and a connection is formed between the filter box 233 and the filter plate 232, wherein a filter material is placed inside the filter box 233, and the water in the water collection cabin is collected. Filter to avoid impurities in the water, which may cause blockage of the spray pipe 132 and the spiral nozzle 133.

Further, the water collecting hatch 231 is inclined, and the side of the water collecting hatch 231 close to the filter box 233 is lower than the other side, so that the water mist sprayed by the spiral nozzle 133 forms a water flow on the water collecting hatch 231 and flows to the filter. In the box 233, filter, and the design of the water collecting hatch 231 further prevents the water in the water from forming Moss plants such as moss then cause the blockage of the spray pipe 132 and the spiral nozzle 133 .

Therefore, when using in severe cold seasons or in severe cold regions, after the use is completed, pull the stopper 216 to make the stopper 216 break away from the stopper hole 213, and then slide the baffle 214 downward along the chute 212, so that the baffle 214 forms a complete blockage to the wind inlet window 111. At the same time, because the fan 140 stops working, there is no air flow inside the tower body 110. Therefore, under the action of gravity, the originally opened leaf plate 223 rotates naturally on the gantry 221 at this time. Form a superimposed state, and form a blockage again to the air inlet window 111, double blockage, so that the temperature inside the tower body 110 will not drop sharply as much as possible, and at the same time, due to the regular downward slope design on the heat exchanger 120 The copper tube allows the residual liquid in it to flow out of the water outlet 122 actively under the action of gravity, avoiding residual liquid remaining in the heat exchanger 120 inside the tower body 110, and preventing the residual liquid in it from freezing due to lowering of the temperature. The internal blockage of the copper tube may even lead to the rupture of the copper tube due to the increase in liquid freezing during the liquid freezing process. Further, the external pressure device is used to discharge the remaining water in the water collection tank to avoid the water collection tank from being damaged. Freezing will form inside, which will affect the next use of the closed cooling tower with antifreeze structure.

In the related art, during the use of this kind of closed cooling tower with anti-freezing structure, the water vapor formed by heat exchange inside it will be discharged to the outside of the tower body 110 through the fan 140, and part of the cooling water will be used. Discharging the cooling tower causes a waste of water resources, and in order to avoid the waste of water resources as much as possible, most of the water absorption equipment is installed on the top of the tower body 110, and the water vapor forms condensed water in the water absorption equipment and then drops to the tower body 110 In the water collecting tank at the bottom, resources are reused. However, in a severe cold environment, a large amount of water in the water absorbing equipment will condense into ice at a gradually decreasing temperature, which in turn will cause the blockage of the entire water absorbing equipment, and will This makes it impossible for the fan 140 to pump air inside the tower body 110, which seriously affects the later use of the closed cooling tower with an antifreeze structure.

According to some embodiments of the present application, as shown in FIGS. 5-9 , a water absorbing assembly 300 is provided between the spray tooling 130 and the fan 140. The water absorbing assembly 300 includes a water absorbing cabin 310 and a telescopic member 320. The water absorbing cabin 310 is fixed on the On the inner wall of the tower body 110 , there are multiple telescopic members 320 . The fixed ends of the plurality of telescopic members 320 are affixed to the inner top of the tower body 110 .

Wherein, the bottom of the water-absorbing cabin 310 is hollowed out to facilitate the passage of water vapor and condensed water. The inner bottom of the water-absorbing cabin 310 is provided with a water-absorbing part 311 and a mesh plate 312 in turn, and the water-absorbing part 311 is arranged on the inner bottom of the water-absorbing cabin 310 and the net. Between the plates 312, the net plate 312 and the output end of the telescopic element 320 are fixedly connected.

Specifically, the water-absorbing member 311 may be made of related materials such as water-absorbing sponges.

Further, a T-shaped block 313 is fixedly connected to the peripheral side of the net plate 312, and the T-shaped block 313 is limited and slides on the inner wall of the water-absorbing chamber 310. The block 313 slides up and down in the water-absorbing chamber 310 , and then squeezes the water-absorbing member 311 , so that the condensed water formed in the water-absorbing member 311 is squeezed out and drips to the bottom of the tower body 110 .

Wherein, the telescopic member 320 may be an existing equipment such as a hydraulic cylinder with a telescopic function.

It can be understood that during the use of this type of closed cooling tower with an antifreeze structure, the telescopic member 320 is activated to drive the mesh plate 312 to slide up and down in the water suction cabin 310 through the T-shaped block 313, and the bottom end The water-absorbing part 311 performs repeated squeezing actions, so that the condensed water formed in it is squeezed out and drips to the bottom of the tower body 110, which ensures to a certain extent that the water-absorbing part 311 contains as little water as possible, and avoids water content. Excessive blockage will be formed inside the water absorbing part 311, so that the airflow cannot rush through the water absorbing part 311, causing the cooling tower to fail to exhaust. At the same time, try to avoid being in a cold environment. The water body is rich in water and condenses into ice, which in turn affects the later use of the closed cooling tower.

In the related art, after the closed cooling tower with an antifreeze structure stops using, the heat exchanger 120, the water collecting tank and the water absorbing part 311 in it are drained, which can reduce the remaining water from condensing into ice to a certain extent. , and then affect the use of the closed cooling tower, however, on the outer wall of the copper tube of the heat exchanger 120, the spiral nozzle 133 on the spray tool 130 and the inside of the water absorbing part 311, there will be more or less residual water, And this residual water will gradually form a frozen layer inside the tower body 110 as the temperature drops, and if the frozen layer is not pretreated, directly opening the closed cooling tower with an antifreeze structure will cause heat exchange The sudden rise of the temperature of the device 120 is harmful to the service life of the heat exchanger 120, and the negative pressure is formed in the tower body 110 due to the operation of the fan 140, which is easy to cause certain damage to the water-absorbing member 311.

According to some embodiments of the present application, as shown in FIGS. 10-12 , the tower body 110 is provided with a preheating assembly 400, the preheating assembly 400 includes an air pump 410 and an exhaust pipe 420, and the air pump 410 is fixed to the tower body 110, One end of the exhaust pipe 420 is fixedly connected to the output end of the air pump 410 , and the other end of the exhaust pipe 420 is disposed between the heat exchanger 120 and the filter element 230 .

Wherein, one end of the exhaust pipe 420 disposed in the tower body 110 is fixedly connected with a plurality of exhaust nozzles 430 , and the plurality of exhaust nozzles 430 are disposed on a side of the exhaust pipe 420 facing the heat exchanger 120 .

Thus, it can be understood that before using this kind of closed cooling tower with antifreeze structure, the external heat source (hot air flow) can be connected through the air pump 410, and delivered to a plurality of exhaust nozzles 430 through the exhaust pipe 420, and then more An exhaust nozzle 430 blows the hot air to the inside of the heat exchanger 120 and the tower body 110, melting the frozen layer formed by the residual water inside the tower body 110, and at the same time cooling the copper tubes of the heat exchanger 120 to a certain extent. Preheating, to avoid the heat exchanger 120 in the normal use process, due to the need to circulate a liquid with a higher temperature, resulting in a sudden rise in temperature from a low temperature state, to avoid damage to the copper tube on the heat exchanger 120, and to prevent the frozen layer from being damaged. After melting, the water-absorbing member 311 is in a breathable state, which is convenient for the normal exhaust of the fan 140 .

It should be noted that the specific models and specifications of the heat exchanger 120, spray pump 131, spiral nozzle 133, fan 140, tension spring 217, air pump 410 and exhaust nozzle 430 need to be selected according to the actual specifications of the device, etc. The specific type selection calculation method adopts the existing technology in the field, so it will not be described in detail.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (10)

1. The utility model provides a closed cooling tower with anti-freezing structure, contains cooling tower subassembly (100), cooling tower subassembly (100) contain body of the tower (110), heat exchanger (120), spray frock (130) and fan (140), heat exchanger (120) set up in body of the tower (110), spray frock (130) set up in heat exchanger (120) top side, fan (140) communicate in body of the tower (110) top, wherein, be provided with temperature sensor on body of the tower (110), temperature sensor is used for control the start-stop of spraying frock (130), the bottom is provided with the sump tank in body of the tower (110), the sump tank with the input intercommunication of spraying frock (130), its characterized in that:

the anti-freezing component (200) is arranged on the tower body (110);

the anti-freezing assembly (200) comprises a first closing piece (210), a second closing piece (220) and a filter piece (230), wherein the first closing piece (210) is symmetrically arranged on the outer wall of the tower body (110), the second closing piece (220) is symmetrically arranged on the inner wall of the tower body (110), the second closing piece (220) is matched with the first closing piece (210), and the filter piece (230) is arranged at the inner bottom of the tower body (110).

2. The closed cooling tower with an antifreeze structure as set forth in claim 1, wherein: air inlet windows (111) are symmetrically arranged on the side wall of the tower body (110), and a filter screen (112) is inserted on the air inlet windows (111) in a sliding mode.

3. The closed cooling tower with an antifreeze structure as set forth in claim 1, wherein: a water inlet (121) of the heat exchanger (120) is arranged above the water outlet (122), and the heat exchanger (120) is fixedly connected to the inner wall of the tower body (110) through a fixing frame (123).

4. The closed cooling tower with an antifreeze structure as claimed in claim 1, wherein: the heat exchanger (120) adopts a copper tube, and the section of the copper tube in the height direction of the heat exchanger (120) is in a regular downward inclined design.

5. The closed cooling tower with an antifreeze structure as set forth in claim 1, wherein: spray frock (130) and contain spray pump (131), shower (132) and spiral nozzle (133), the end of intaking of spray pump (131) is fixed communicate in the sump tank, the play water end of spray pump (131) is fixed the intercommunication have shower (132), shower (132) rigid coupling in heat exchanger (120) top side, spiral nozzle (133) set up to a plurality ofly, a plurality of spiral nozzle (133) rigid coupling in shower (132) orientation one side of heat exchanger (120).

6. The closed cooling tower with an antifreeze structure as set forth in claim 2, wherein: the first closing part (210) comprises a cover plate (211), a sliding groove (212), a limiting hole (213), a baffle plate (214), a handle (215), a limiting bolt (216) and a tension spring (217), the cover plate (211) is fixedly connected to the outer wall of the tower body (110), the sliding groove (212) is symmetrically arranged, the sliding groove (212) is arranged on the cover plate (211), the limiting hole (213) is arranged on the cover plate (211), the baffle plate (214) is inserted into the cover plate (211) in a sliding mode, the handle (215) is fixedly connected to the baffle plate (214), the handle (215) is in sliding fit with the sliding groove (212), the limiting bolt (216) is inserted into the handle (215), the limiting bolt (216) is matched with the limiting hole (213), and two ends of the tension spring (217) are fixedly connected to the handle (215) and the limiting bolt (216) respectively.

7. The closed cooling tower with an antifreeze structure as set forth in claim 6, wherein: the second closing part (220) comprises a portal frame (221), a T-shaped strip (222) and a leaf plate (223), the portal frame (221) is arranged on the inner wall of the tower body (110), the T-shaped strip (222) is fixedly connected to the portal frame (221), the T-shaped strip (222) is inserted into the inner wall of the tower body (110) in a sliding mode, and the leaf plate (223) is rotatably connected to the portal frame (221).

8. The closed cooling tower with an antifreeze structure as set forth in claim 7, wherein: the hinge plates (223) are uniformly arranged along the height direction of the portal frame (221), and the hinge plates (223) are mutually overlapped.

9. The closed cooling tower with an antifreeze structure as set forth in claim 1, wherein: filter piece (230) contain sump cover (231), filter plate (232) and filter box (233), sump cover (231) rigid coupling in body of the tower (110) inner wall, filter plate (232) rigid coupling in sump cover (231) bottom, filter box (233) seal the slip set up in body of the tower (110) are close to one side of filter plate (232), just filter box (233) with form the intercommunication between filter plate (232).

10. The closed cooling tower with an antifreeze structure as claimed in claim 9, wherein: the water collecting hatch cover (231) is obliquely arranged, and one side, close to the filter box (233), of the water collecting hatch cover (231) is lower than the other side.

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