Closed cooling water treatment system

Abstract

The utility model discloses a closed cooling water treatment system which comprises a water tank and further comprises a cooling system, and the cooling system is connected with the water tank through a cooling water pipe. The cooling system comprises a natural cooler and a cooling water machine, a valve is arranged on a cooling water pipe, and the valve can control a water tank to be communicated with the natural cooler or the cooling water machine. Through the arrangement of the natural cooler, when the environment temperature is lower than the cooling water temperature, the natural cooler can cool the cooling water through the natural cooling capacity, the energy consumption of the cooling-water machine is reduced to the maximum extent, and the purpose of saving energy is achieved. Especially when the environment temperature in winter is low, the natural cooler provides all cooling capacity for cooling water in the water tank through natural cooling capacity, and therefore the operation cost of the system is saved.

Description

Technical Field

[0001] The utility model relates to a cooling water treatment system, in particular to a closed cooling water treatment system. Background Art

[0002] During the production process in a production workshop, cooling water is usually required for heat exchange. The traditional method is to use water as the cooling medium. After heat exchange, the high-temperature water is cooled by a cooling water tower and then becomes low-temperature water again for recycling. There are two traditional methods for cooling the cooling water. One is to rely on the cooling water tower for cooling. This method is mostly used in southern regions and consumes a large amount of electric energy, which is very environmentally unfriendly. The other method for cooling the cooling water is to set up a reservoir outdoors and use natural heat dissipation for cooling. This method has good effects in winter and is mostly used in northern regions. However, in hot summer, due to the too high water temperature, this method cannot meet the needs of heat exchange, and the reservoir occupies a large area and has a high manufacturing cost. Summary of the Utility Model

[0003] To overcome the above disadvantages, the purpose of the utility model is to provide a closed cooling water treatment system that does not require the construction of a reservoir, consumes little electric energy, and has good cooling effects.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a closed cooling water treatment system, including a water tank, and further including a cooling system. The cooling system is connected to the water tank through a cooling water pipe; the cooling system includes a natural cooler and a chiller. A valve is provided on the cooling water pipe, and the valve can control the connection between the water tank and the natural cooler or the connection between the water tank and the chiller.

[0005] Further, the valve is a proportional valve. One valve port of the proportional valve is connected to the water tank, and the other two valve ports are respectively connected to the natural cooler and the chiller.

[0006] Further, the water outlet of the natural cooler is connected to the water inlet of the chiller.

[0007] Further, it further includes a filter tank, and the filter tank is connected to the water tank. The cooling water in the water tank can return to the water tank after being filtered by the filter tank.

[0008] Further, it further includes a chemical agent barrel, and the chemical agent barrel is connected to the water tank. The chemical agent barrel can add bactericidal and scale-removing agents to the water tank.

[0009] Further, it further includes a control system, and the control system can automatically adjust the actual output power and water volume of the cooling delivery pump according to the actual working conditions.

[0010] Further, there are two water tanks, namely a high-temperature water tank and a low-temperature water tank. The two water tanks are connected by a water pipe. The high-temperature water tank is connected to the water inlet of the cooling system, and the low-temperature water tank is connected to the water outlet of the cooling system.

[0011] Further, the cooling water in the low-temperature water tank is transported to the workshop through the workshop inlet pipe, and then flows back to the high-temperature water tank through the workshop outlet pipe.

[0012] Further, a water replenishment system is also included. The water replenishment system is connected to the water tank. The water replenishment system includes a water storage tank and a water softener. The water storage tank is connected to the tap water. The water inlet of the water softener is connected to the water storage tank, and the water outlet of the water softener is connected to the water tank.

[0013] Further, a spray head is arranged on one side of the natural cooler. The spray head is connected to the water replenishment system, and the spray head can spray tap water onto the natural cooler.

[0014] Further, a heat dissipation member is arranged on the natural cooler. Through the arrangement of the heat dissipation member, the heat dissipation effect of the natural cooler is improved, and the cooling effect of the natural cooler on the cooling water is enhanced.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1) Through the arrangement of the natural cooler, when the ambient temperature is lower than the temperature of the cooling water, the natural cooler can utilize the cold energy of nature to cool down the cooling water, minimizing the energy consumption of the chiller to the greatest extent and achieving the purpose of energy conservation. Especially in winter when the ambient temperature is relatively low, the natural cooler utilizes the cold energy of nature to provide all the cold energy for the cooling water in the water tank, thereby saving the operation cost of the system.

[0017] 2) Through the arrangement of the chiller, when the ambient temperature is higher than the temperature of the cooling water, the cooling water enters the chiller for cooling, making up for the deficiency that the natural cooler cannot cool down the cooling water when the ambient temperature is relatively high.

[0018] 3) Through the connection arrangement of the water outlet of the natural cooler and the water inlet of the chiller, when the ambient temperature is lower than the temperature of the cooling water before cooling and higher than the temperature of the cooling water after cooling, the cooling water flowing out of the water tank first passes through the natural cooler for cooling and temperature reduction, and then passes through the chiller for temperature reduction, reducing the water temperature to the preset temperature. By first absorbing a part of the heat through the natural cooler and then reducing the temperature through the chiller, the effect of energy conservation can be achieved.

[0019] 4) By using water tanks to replace the traditional reservoir, there is no need to build a large reservoir, and only two stainless steel water tanks are required.

[0020] 5) The cooling system is a closed-loop circulation system without losses such as evaporation and dispersion, and has lower operating costs compared to traditional cooling water systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic connection diagram of the control system according to an embodiment of the present utility model.

[0024] In the figure: 1, water tank; 11, high-temperature water tank; 12, low-temperature water tank; 2, cooling system; 21, natural cooler; 22, chiller; 23, proportional valve; 24, cooling transfer pump; 3, makeup water system; 31, water storage tank; 32, water softener; 4, filter tank; 5, chemical agent barrel; 6, water use system; 61, water use transfer pump; 62, workshop inlet pipe; 63, workshop outlet pipe; 7, control system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following will give a detailed description of the specific embodiments of the present utility model with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0026] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after, unless otherwise specified.

[0027] See the attached Figure 1 As shown, a closed cooling water treatment system in this embodiment includes a water tank 1 and a cooling system 2. The cooling system 2 is a closed-loop circulation system without losses such as evaporation and dispersion, and has lower operating costs compared to traditional cooling water systems.

[0028] The cooling system 2 includes a natural cooler 21 and a chiller 22. The water tank 1 is connected to the natural cooler 21 through a cooling water pipe. A cooling transfer pump 24 is provided on the cooling water pipe. The water in the water tank 1 can enter the natural cooler 21 under the action of the cooling transfer pump 24 and can be cooled by the natural cooler 21. When the ambient temperature is lower than the temperature of the cooling water, the natural cooler 21 can utilize the cold energy of nature to cool the cooling water, minimizing the energy consumption of the chiller 22 and achieving the purpose of energy saving. Especially in winter when the ambient temperature is relatively low, the natural cooler 21 utilizes the cold energy of nature to provide all the cold energy for the cooling water in the water tank 1, thus saving the operating cost of the system.

[0029] In some embodiments, a chiller 22 is further included. The chiller 22 is connected to the water tank 1 through a cooling water pipe. After the water in the water tank 1 enters the chiller 22 through the cooling water pipe, the chiller 22 cools the water in the water tank 1 and then returns it to the water tank 1. When the ambient temperature is higher than the temperature of the cooling water before cooling, the natural cooler 21 cannot be used to cool the cooling water, and the chiller 22 is used to cool the cooling water. For example, in summer, when the outdoor ambient temperature is greater than the temperature of the cooling water, the natural cooler 21 cannot be used for cooling, and only the chiller 22 can be used to cool the cooling water. The chiller 22 is an air-cooled chiller or can be other forms of chillers as long as it can achieve the purpose of cooling the cooling water.

[0030] In some embodiments, a proportional valve 23 is provided on the cooling water pipe. One valve port of the proportional valve 23 is connected to the water tank 1, and the other two valve ports are respectively connected to the natural cooler 21 and the chiller 22. By adjusting the proportional valve 23, it can be adjusted whether the cooling water flowing out of the water tank 1 directly enters the natural cooler 21 or directly enters the chiller 22. At this time, it is judged according to the ambient temperature. When the ambient temperature is greater than the temperature of the cooling water, the cooling water directly enters the chiller 22 for cooling. When the ambient temperature is less than the temperature of the cooling water, the cooling water first enters the natural cooler 21 for cooling.

[0031] In some embodiments, the water outlet of the natural cooler 21 is connected to the water inlet of the chiller 22. When the ambient temperature is less than the temperature of the cooling water before cooling and greater than the temperature of the cooling water after cooling, the cooling water flowing out of the water tank 1 first passes through the natural cooler 21 for cooling and then passes through the chiller 22 for further cooling to reduce the water temperature to the preset temperature. By first passing through the natural cooler 21 to absorb a part of the heat and then passing through the chiller 22 for cooling, the effect of energy saving can be achieved.

[0032] In some embodiments, the water tank 1 is a stainless-steel insulated water tank 1, which has a heat preservation effect on the cooling water. There are two water tanks 1, namely a high-temperature water tank 11 and a low-temperature water tank 12. The two water tanks 1 are connected by a water pipe. The high-temperature water tank 11 is used to hold the cooling water before cooling and is connected to the water inlet of the natural cooling system 2. The low-temperature water tank 12 is used to hold the cooled cooling water and is connected to the water outlet of the natural cooling system 2. By placing the cooling water before and after cooling in two separate water tanks 1, the mixing of the cooling water before and after cooling is avoided, and the temperature of the cooled cooling water can be accurately controlled.

[0033] In some embodiments, a water replenishing system 3 is further included. The water replenishing system 3 is connected to the high-temperature water tank 11 and can replenish the amount of cooling water. The water replenishing system 3 includes a water storage tank 31 and a water softener 32. The water storage tank 31 is connected to the tap water, and the water softener 32 is connected to the water storage tank 31 and the high-temperature water tank 11 respectively. Through the setting of the water softener 32, calcium and magnesium ions in the water are removed by ion exchange resin, reducing the water quality hardness.

[0034] In some embodiments, a water using system 6 is further included. The cooling water in the low-temperature water tank 12 is transported to the water using workshop through the workshop water inlet pipe 62 under the action of the water using transfer pump 61 to cool the devices in the workshop. Then the cooling water is transported back to the high-temperature water tank 11 through the workshop water outlet pipe 63, and then the cooling water in the high-temperature water tank 11 is cooled by the cooling system 2. After cooling, it is transported back to the low-temperature water tank 12.

[0035] In some embodiments, a filter tank 4 is further included. The filter tank 4 is connected to the high-temperature water tank 11. The cooling water in the high-temperature water tank 11 is filtered by the filter tank 4 and then returns to the high-temperature water tank 11. Even in a closed-circuit water system, impurities and dirt will be generated. Through the setting of the filter tank 4, the impurities in the closed-circuit water system are automatically filtered to keep the water quality clean. And the filter tank 4 has an automatic backwashing function, which can reduce manual maintenance. By removing the impurities in the system, the heat exchange efficiency can be improved and electric energy can be saved.

[0036] In some embodiments, a medicine barrel 5 is further included. The medicine barrel 5 is connected to the low-temperature water tank 12. The medicine barrel 5 is used to add a biocide and a metal corrosion inhibitor to the water tank 1. By adding a biocide and a metal corrosion inhibitor to the cooling water and combining with the softened water softened by the water softener 32, the problem of metal corrosion is solved and the service life of the system is extended.

[0037] In some embodiments, a control system 7 is further included. The control system 7 adopts a Siemens PLC intelligent control system and an ABB frequency converter, and automatically adjusts the actual output power and water volume of the cooling transfer pump 24 according to the actual working conditions, which can save more than 50% of the electricity cost.

[0038] The above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it. It is not intended to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A closed cooling water treatment system, comprising a water tank (1), characterized in that: It also includes a cooling system (2), the cooling system (2) being connected to the water tank (1) via a cooling water pipe; the cooling system (2) including a natural cooler (21) and a water chiller (22), a valve being arranged on the cooling water pipe, the valve being able to control the water tank to be connected to the natural cooler (21), or to be connected to the water chiller (22).

2. The closed cooling water treatment system according to claim 1, characterized in that: The valve is a proportional valve, one valve port of the proportional valve (23) is connected to the water tank (1), and the other two valve ports are respectively connected to the natural cooler (21) and the chiller (22).

3. The closed cooling water treatment system according to claim 1, characterized in that: The water outlet of the natural cooler (21) is connected to the water inlet of the chiller (22).

4. The closed cooling water treatment system according to claim 1, characterized in that: It also comprises a filter tank (4), the filter tank (4) being connected to the water tank (1), and the cooling water in the water tank (1) can be returned to the water tank (1) after being filtered by the filter tank.

5. The closed cooling water treatment system according to claim 1, characterized in that: It also comprises a medicine barrel (5), the medicine barrel (5) being connected to the water tank (1), and the medicine barrel (5) being capable of adding a bactericidal and descaling agent into the water tank (1).

6. The closed cooling water treatment system according to claim 1, characterized in that: It also includes a control system (7), wherein the control system (7) can automatically adjust the actual output power and water volume of the cooling delivery pump (24) according to actual working conditions.

7. The closed cooling water treatment system according to claim 1, characterized in that: The water tanks (1) are provided with two, namely a high-temperature water tank (11) and a low-temperature water tank (12). The two water tanks (1) are connected via a water pipe. The high-temperature water tank (11) is connected to a water inlet of the cooling system (2), and the low-temperature water tank (12) is connected to a water outlet of the cooling system (2).

8. The closed cooling water treatment system according to claim 7, characterized in that: The cooling water in the low-temperature water tank (12) is transported to the workshop through the workshop water inlet pipe (62), and then flows back to the high-temperature water tank (11) through the workshop water outlet pipe (63).

9. The closed cooling water treatment system according to claim 1, characterized in that: It also comprises a water replenishment system (3), the water replenishment system (3) being connected to the water tank (1), the water replenishment system (3) comprising a water storage tank (31) and a water softener (32), the water storage tank (31) being connected to tap water, the water inlet of the water softener (32) being connected to the water storage tank (31), and the water outlet of the water softener (32) being connected to the water tank (1).

10. The closed cooling water treatment system according to claim 9, characterized in that: A nozzle is provided on one side of the natural cooler (21), the nozzle is connected to the water replenishment system (3), and the nozzle can spray tap water toward the natural cooler (21).

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