Cooling circulation system

Abstract

The utility model relates to a cooling circulation system which comprises a cooling tower, a circulating pump, a fan, a condenser, a throttling valve and a temperature controller. The cooling tower and the condenser are in loop connection, a circulating pump is arranged between the outlet end of the cooling tower and the liquid phase inlet of the condenser, a temperature controller and a throttling valve are arranged between the liquid phase outlet of the condenser and the inlet end of the cooling tower, the temperature controller is arranged at one end close to the liquid phase outlet of the condenser, and the throttling valve is arranged at the other end close to the liquid phase outlet of the condenser. The temperature controller is arranged in the condenser and used for measuring the temperature of liquid at the liquid phase outlet end of the condenser, meanwhile, the condenser is provided with a gas phase inlet and a gas phase outlet and used for introducing cold air for cooling, and when the cooling circulation system works, the temperature controller can monitor the temperature of outlet water in real time so as to control the flow of the circulation water pump and the draught fan. Materials are cooled in two cooling modes of air cooling and water cooling, the burden of the cooling tower can be relieved, and meanwhile the efficiency of the cooling tower and the condenser can reach the highest by controlling operation of the circulating water pump and the draught fan.

Description

Technical Field

[0001] The present application relates to the field of cooling circulation, and in particular to a cooling circulation system. Background Art

[0002] Currently, the core structure of cooling circulation systems widely used in the fine chemical industry is generally composed of three key components: cooling towers, circulating pump stations, and condensers. The overall heat transfer capacity of this system is not simply the sum of the performance of each component, but is limited by the performance of the weakest link among the three. In other words, the heat transfer capacity is directly determined by the lowest performance of these three components.

[0003] In practice, while system equipment and workshop production processes remain constant, the operating conditions of the cooling system can vary significantly with the seasons. Specifically, in winter, due to the relatively low ambient temperature, the cooling system often operates with ease, easily meeting the cooling needs of the production process. However, with the arrival of summer, hot weather and soaring temperatures pose a severe challenge to the cooling tower's cooling effect. Under high temperatures, the cooling tower's heat dissipation capacity is severely restricted, causing the entire cooling system to be overwhelmed and unable to achieve the desired cooling effect. Utility Model Content

[0004] In view of this, the present application proposes a cooling circulation system, including: a cooling tower, a circulation pump, a fan, a condenser, a throttle valve and a temperature controller.

[0005] The outlet end of the cooling tower is connected to the liquid phase inlet of the condenser by a pipeline, and the circulating pump is arranged between the outlet end of the cooling tower and the liquid phase inlet of the condenser; the liquid phase outlet of the condenser is connected to the inlet end of the cooling tower by a pipeline, and the throttle valve and the temperature controller are arranged between the liquid phase outlet of the condenser and the inlet end of the cooling tower; the air outlet of the fan is connected to the gas phase inlet of the condenser by a pipeline, and the gas phase outlet of the condenser is suitable for connecting to the heating end; the temperature controller is electrically connected to the circulating water pump and the fan.

[0006] In one possible implementation, the temperature controller is arranged on a side close to the liquid phase outlet of the condenser, and the throttle valve is arranged between the temperature controller and the inlet end of the cooling tower.

[0007] In one feasible embodiment, the condenser includes: a cavity, an air heat exchange tube and a liquid heat exchange tube; the air heat exchange tube and the liquid heat exchange tube are both arranged in the cavity; one end of the air heat exchange tube is connected to the gas phase inlet, and the other end is connected to the gas phase outlet; one end of the liquid heat exchange tube is connected to the liquid phase inlet, and the other end is connected to the liquid phase outlet.

[0008] In one feasible manner, a material inlet is provided on one side of the length direction of the cavity, and a material outlet is provided at the bottom of the cavity, and the material outlet is provided at the bottom of the cavity and away from the material inlet; the gas phase inlet is provided at the bottom of the cavity, and the gas phase outlet is provided at the top of the cavity, and the gas phase inlet and the gas phase outlet are both provided on the side close to the material inlet; the liquid phase inlet and the liquid phase outlet are both provided on the other side of the length direction of the cavity.

[0009] In one achievable manner, the condenser further comprises a partition, wherein the partition is disposed between the gas heat exchange tube and the liquid heat exchange tube, and a preset distance is formed between the top and the bottom of the partition and the inner wall of the cavity.

[0010] In one achievable manner, the condenser further includes a partition plate, which is disposed between the gas heat exchange tube and the liquid heat exchange tube, and has a through hole.

[0011] In one achievable manner, the gas heat exchange pipe is a straight pipe, a coiled pipe or a spiral pipe.

[0012] In one achievable manner, the liquid heat exchange tube is a U-shaped tube, a coil or a spiral tube.

[0013] In one achievable manner, the ratio of the height of the partition to the height of the interior of the cavity is 2:5-4:5, and the height of the partition is greater than the height of the liquid heat exchange tube.

[0014] In one achievable manner, the ratio of the liquid heat exchange tube to the cavity in the length direction is 1:3-1:2.

[0015] The beneficial effects of the present application are as follows: a loop is connected between the cooling tower and the condenser, a circulating pump is provided between the outlet end of the cooling tower and the liquid phase inlet of the condenser, a temperature controller and a throttle valve are provided between the liquid phase outlet of the condenser and the inlet end of the cooling tower, wherein the temperature controller is provided at one end close to the liquid phase outlet of the condenser, for measuring the liquid temperature at the liquid phase outlet end of the condenser, and at the same time, a gas phase inlet and a gas phase outlet are provided on the condenser for introducing cold air for cooling. When the cooling circulation system is working, the temperature controller can monitor the outlet water temperature in real time to control the flow rate of the circulating water pump and the fan. The cooling circulation system according to the present application cools the material by both air cooling and water cooling, which can reduce the burden on the cooling tower, and at the same time can maximize the efficiency of the cooling tower and condenser by controlling the operating status of the circulating water pump and the fan.

[0016] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

[0018] Figure 1 A schematic structural diagram of a cooling circulation system according to an embodiment of the present application is shown;

[0019] Figure 2 A schematic cross-sectional structure diagram of a condenser according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0021] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0023] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0024] In addition, numerous specific details are provided in the detailed description below to better illustrate the present application. Those skilled in the art will appreciate that the present application can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art are not described in detail in order to highlight the main purpose of the present application.

[0025] like Figure 1 As shown, a cooling circulation system includes: a cooling tower 100, a circulation pump 200, a fan 300, a condenser 400, a throttle valve 600 and a temperature controller 500.

[0026] The outlet end of the cooling tower 100 is connected to the liquid phase inlet 415 of the condenser 400 by a pipeline, and a circulating pump 200 is arranged between the outlet end of the cooling tower 100 and the liquid phase inlet 415 of the condenser 400; the liquid phase outlet 416 of the condenser 400 is connected to the inlet end of the cooling tower 100 by a pipeline, and a throttle valve 600 and a temperature controller 500 are arranged between the liquid phase outlet 416 of the condenser 400 and the inlet end of the cooling tower 100; the air outlet of the fan 300 is connected to the gas phase inlet 413 of the condenser 400 by a pipeline, and the gas phase outlet 414 of the condenser 400 is suitable for connection to the heating end 700; the circulating water pump and the fan 300 are interlocked and controlled, and the temperature controller 500 is interlocked with the circulating water pump and the fan 300.

[0027] In one implementable manner, the temperature controller 500 is disposed on a side close to the liquid phase outlet 416 of the condenser 400 , and the throttle valve 600 is disposed between the temperature controller 500 and the inlet end of the cooling tower 100 .

[0028] The low-temperature liquid in the cooling tower 100 enters the condenser 400 through a circulating water pump, where it exchanges heat and heats up. The high-temperature water is discharged through the liquid phase outlet 416 of the condenser 400. A temperature controller 500 is provided at the liquid phase outlet 416 of the condenser 400 to measure the temperature of the outlet water. The outlet water passes through the throttle valve 600 and flows into the cooling tower 100 for further cooling, forming a cooling cycle. During this process, the condenser 400 is also provided with a gas phase inlet 413 and a gas phase outlet 414 for introducing cold air for heat exchange and then discharging hot air. The discharged hot air can be used for indoor heating or other heat-using processes in winter.

[0029] Among them, for example, in winter, the outside temperature is low and the cooling efficiency of the cooling tower 100 is high. When the temperature controller 500 at the liquid phase outlet 416 of the condenser 400 detects that the water temperature is low, the operating speed of the fan 300 and the circulating pump 200 is reduced. When the circulating water after heat exchange returns to the cooling tower 100, the temperature will not be too high, which is in line with the influence of the outside temperature on the working efficiency of the cooling tower. Under the condition of suitable circulating water temperature, the working consumption of the fan 300 and the circulating pump 200 can be saved; in summer, the outside temperature is high and the cooling efficiency of the cooling tower 100 is low. If the operating speeds of the circulating pump 200 and the fan 300 are low, the temperature controller 500 at the liquid phase outlet 416 of the condenser 400 detects that the water temperature is high, and the burden on the cooling tower 100 is heavy. Heat exchange can be performed by increasing the rate and flow rate of cold air passed into the condenser 400 by the fan 300 and the flow rate and flow rate of circulating water. A portion of the heat is taken out through the air circulation, thereby reducing the pressure of the cooling tower water circulation. The circulating water is then cooled to reduce the heat absorbed by the circulating water, thereby reducing the burden on the cooling tower 100.

[0030] like Figure 2 As shown, in one feasible manner, the condenser 400 includes: a cavity 410, an air heat exchange tube 420 and a liquid heat exchange tube 430; the air heat exchange tube 420 and the liquid heat exchange tube 430 are both arranged in the cavity 410; one end of the air heat exchange tube 420 is connected to the gas phase inlet 413, and the other end is connected to the gas phase outlet 414; one end of the liquid heat exchange tube 430 is connected to the liquid phase inlet 415, and the other end is connected to the liquid phase outlet 416.

[0031] In one embodiment, the water circulation and gas circulation in condenser 400 exchange heat through liquid heat exchange pipes 430 and gas heat exchange pipes 420, respectively. When high-temperature material enters chamber 410, it first passes through the gas circulation heat exchange area. Gas heat exchange pipes 420 are located near the high-temperature material inlet 411. After passing through gas heat exchange pipes 420, the heat is transferred to the air in the gas circulation heat exchange area. Therefore, the cold air entering the gas circulation heat exchange area removes some of the heat from the material, becoming hot air and then being discharged through gas phase outlet 414. The high-temperature material initially passes through gas heat exchange pipes 420, which not only removes some of the heat, reducing the cooling burden on cooling tower 100, but also uses the removed heat as a heat source for heating or pipe heating. After heat exchange through gas heat exchange pipes 420, the material then passes through liquid heat exchange pipes 430 for further heat exchange. The low-temperature material is discharged through material outlet 412. This embodiment allows for complete and independent separation of gas and circulating water. While the gas removes heat, it does not cause volatilization loss of circulating water, thus conserving water.

[0032] It should be noted that after entering the cavity 410, the high-temperature material should first pass through the air heat exchange tube 420 and then through the liquid heat exchange tube 430. Only in this way can the air heat exchange tube 420 achieve the effect of initially cooling the high-temperature material. Otherwise, the high-temperature material will first exchange heat with the liquid heat exchange tube 430, which cannot solve the problem of the heavy burden on the cooling tower 100. Furthermore, when controlling the circulation pump 200 and the fan 300, the temperature controller 500 preferentially increases the air intake of the fan 300, that is, preferentially adjusts the air intake of the air heat exchange tube 420. When the air intake reaches the maximum but still cannot meet the cooling demand, the operating state of the circulation pump 300 is adjusted and the water intake rate of the circulation pump 300 is increased. Conversely, when the monitored temperature of the temperature controller 500 is low, the water intake rate of the circulation pump 300 is first reduced, and then the air intake of the fan 300 is reduced.

[0033] In one feasible manner, a material inlet 411 is provided on one side of the length direction of the cavity 410, and a material outlet 412 is provided at the bottom of the cavity 410, and the material outlet 412 is provided at the bottom of the cavity 410 and on a side away from the material inlet 411; the gas phase inlet 413 is provided at the bottom of the cavity 410, and the gas phase outlet 414 is provided at the top of the cavity 410, and the gas phase inlet 413 and the gas phase outlet 414 are both provided on a side close to the material inlet 411; the liquid phase inlet 415 and the liquid phase outlet 416 are both provided on the other side of the length direction of the cavity 410.

[0034] In one achievable manner, the condenser 400 further includes a partition 440 , which is disposed between the gas heat exchange tube 420 and the liquid heat exchange tube 430 , with a preset distance between the top and bottom of the partition 440 and the inner wall of the cavity 410 .

[0035] In one practicable manner, the gas heat exchange pipe 420 is a straight pipe, a coiled pipe, or a spiral pipe.

[0036] In one achievable manner, the liquid heat exchange tube 430 is a U-shaped tube, a coiled tube, or a spiral tube.

[0037] In one achievable manner, the ratio of the height of the partition 440 to the height of the interior of the cavity 410 is 2:5-4:5, and the height of the partition 440 is greater than the height of the liquid heat exchange tube 430 .

[0038] In one achievable manner, the ratio of the liquid heat exchange tube 430 to the cavity 410 in the length direction is 1:3-1:2.

[0039] It should be noted that although a cooling cycle system is described above as an example in this application, those skilled in the art will understand that this application should not be limited thereto. In fact, users can flexibly set various parameters according to their personal preferences and / or actual application scenarios, as long as the design is reasonable.

[0040] In this way, the cooling tower and the condenser are connected in a loop, a circulating pump is arranged between the outlet end of the cooling tower and the liquid phase inlet of the condenser, and a temperature controller and a throttle valve are arranged between the liquid phase outlet of the condenser and the inlet end of the cooling tower, wherein the temperature controller is arranged at one end close to the liquid phase outlet of the condenser, for measuring the liquid temperature at the liquid phase outlet end of the condenser, and at the same time, a gas phase inlet and a gas phase outlet are arranged on the condenser, for introducing cold air for cooling. When the cooling circulation system is working, the temperature controller can monitor the outlet water temperature in real time to control the flow rate of the circulating water pump and the fan. According to the cooling circulation system of the present application, the material is cooled by both air cooling and water cooling, which can reduce the burden on the cooling tower, and at the same time, the efficiency of the cooling tower and the condenser can be maximized by controlling the operation of the circulating water pump and the fan.

[0041] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A cooling circulation system, characterized in that: include: Cooling towers, circulation pumps, fans, condensers, throttle valves and temperature controllers; The outlet end of the cooling tower is connected to the liquid phase inlet of the condenser through a pipeline, and the circulating pump is provided between the outlet end of the cooling tower and the liquid phase inlet of the condenser; The liquid phase outlet of the condenser is connected to the inlet end of the cooling tower by a pipeline, and the throttle valve and the temperature controller are provided between the liquid phase outlet of the condenser and the inlet end of the cooling tower; The air outlet of the fan is connected to the gas phase inlet of the condenser through a pipeline, and the gas phase outlet of the condenser is suitable for connecting to the heating end; The temperature controller is electrically connected to the circulation pump and the fan.

2. The cooling circulation system according to claim 1, characterized in that: The temperature controller is arranged on a side close to the liquid phase outlet of the condenser, and the throttle valve is arranged between the temperature controller and the inlet end of the cooling tower.

3. The cooling circulation system according to any one of claims 1 to 2, characterized in that: The condenser comprises: a cavity, an air heat exchange tube and a liquid heat exchange tube; The gas heat exchange tube and the liquid heat exchange tube are both arranged in the cavity; One end of the gas heat exchange pipe is connected to the gas phase inlet, and the other end is connected to the gas phase outlet; One end of the liquid heat exchange tube is connected to the liquid phase inlet, and the other end is connected to the liquid phase outlet.

4. The cooling circulation system according to claim 3, characterized in that: A material inlet is provided on one side of the length direction of the cavity, and a material outlet is provided at the bottom of the cavity, and the material outlet is provided at the bottom of the cavity and away from the side of the material inlet; The gas phase inlet is arranged at the bottom of the cavity, the gas phase outlet is arranged at the top of the cavity, and the gas phase inlet and the gas phase outlet are both arranged on a side close to the material inlet; The liquid phase inlet and the liquid phase outlet are both arranged on the other side of the cavity in the length direction.

5. The cooling circulation system according to claim 3, characterized in that: The condenser further includes a partition plate, which is arranged between the gas heat exchange tube and the liquid heat exchange tube, and a preset distance is formed between the top and the bottom of the partition plate and the inner wall of the cavity.

6. The cooling circulation system according to claim 3, characterized in that: The condenser further includes a partition plate, which is arranged between the gas heat exchange tube and the liquid heat exchange tube, and has a through hole.

7. The cooling circulation system according to claim 5 or 6, characterized in that: The gas heat exchange tube is a straight tube, a coil or a spiral tube.

8. The cooling circulation system according to claim 5 or 6, characterized in that: The liquid heat exchange tube is a U-shaped tube, a coil or a spiral tube.

9. The cooling circulation system according to claim 5, characterized in that: The ratio of the height of the partition to the height of the interior of the cavity is 2:5-4:5, and the height of the partition is greater than the height of the liquid heat exchange tube.

10. The cooling circulation system according to claim 8, characterized in that: The ratio of the liquid heat exchange tube to the cavity in the length direction is 1:3-1:2.

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