RU2696995C1 - Cooling system - Google Patents

Abstract

FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy and can be used for cooling of metallurgical furnace lining. Cooling system includes cooling liquid supply unit, cooling unit of cooled object, communicating with cooling liquid supply unit by means of cooling liquid supply pipe, coolant return unit includes cooling fluid return pipe group and coolant return tank. At that, coolant return pipe group includes coolant liquid return pipe and suction pipeline. Cooling liquid return pipe connection pipe from suction pipeline is interconnected with cooling unit, suction pipeline channel from coolant return pipe is communicated with cooling fluid return tank. Group of pressure pumps includes an injector and a pressure pump, wherein the injector is interconnected with the delivery pump and is located on the suction pipeline in a communicating manner.EFFECT: invention allows preventing spill of cooling liquid, even if cooling unit has leakage, as a result it is possible to reduce risk of potential hazardous situations and reduce resistance to liquid flow.11 cl, 1 dwg

Description

Technical field

The present disclosure relates to the field of metallurgy and, more specifically, to a cooling system.

Background to the invention

In the metallurgical process, it is necessary to cool the lining of a high-temperature metallurgical furnace in order to maintain a lower temperature of the lining of the furnace body, which favorably slows down the corrosion of the furnace body, thereby prolonging the life of the furnace body. For cooling, usually use the cooling mode at positive pressure. Positive pressure cooling means that the water pressure in the water cooling system from inlet to outlet is always more than one atmosphere. In this situation, the pressure and flow rate of the cooling water are controlled so as to remove heat from the surface of the cooled object in a timely manner.

Under normal circumstances, the circulating coolant enters the water jacket of the furnace body through the inlet pipe, cools the furnace body, returns to the coolant return tank, then returns to the cooling system and is reused after cooling. The problem with using such a system is that in the presence of a coolant leak, the latter enters directly into the furnace body from the leakage site under pressure, which can easily lead to an accident if and when the high temperature melt explodes when coolant enters.

Disclosure of invention

The present disclosure is directed mainly to a cooling system designed to solve a problem known in the art, i.e. the circulation of coolant directly into the furnace body from the leak under pressure, which easily leads to an accident when the high temperature melt explodes when coolant enters.

In this regard, in one aspect of the present disclosure, a cooling system is provided, comprising: a coolant supply unit; the cooling unit of the refrigerated object in communication with the coolant supply unit by means of a coolant supply pipe; a coolant return unit including a group of a coolant return pipe and a coolant return tank, wherein a group of a coolant return pipe includes a coolant return pipe and a suction pipe communicating via one channel, a channel of a coolant return pipe from a suction pipe in communication with the cooling unit of the suction pipe channel from the coolant return pipe in communication with the coolant return tank dkosti, the horizontal plane of the block coolant higher than the horizontal plane of the coolant return tank; and a group of a discharge pump including an injector and a discharge pump, the injector communicating with the discharge pump and located in the suction pipe in a communicating manner.

In one example embodiment, the coolant supply unit includes: a heat exchange device; a first coolant storage tank connected to a heat exchanger; and a coolant supply tank provided with a channel connected to the first coolant storage tank and a channel connected to the cooling unit.

In one example embodiment, the coolant supply unit also includes a coolant buffer chamber, wherein the coolant buffer chamber is located in the flow path between the coolant supply tank and the first coolant storage tank.

In one example embodiment, a first overflow plate is located in the coolant supply tank, which divides the coolant supply tank into a first supply network and a second supply network, wherein the height of the first overflow plate is less than the height of the side wall of the coolant supply tank, the first storage tank the coolant is connected to the first supply network, and the coolant supply pipe is connected to the second supply network.

In one example embodiment, a second overflow plate is also located in the coolant supply tank, which divides the second supply network into a first supply subnet and a second supply subnet, wherein the height of the second overflow plate is less than the height of the side wall of the coolant supply tank, the coolant supply pipe is connected to the first supply subnet, and the coolant return tank is connected to the second supply subnet.

In one exemplary embodiment, the coolant supply unit also includes a first coolant supply pump, wherein the first coolant supply pump is located in the flow path between the first coolant storage tank and the coolant buffer chamber.

In one example embodiment, the cooling system also includes a second coolant storage tank, the second coolant storage tank being connected to the coolant return tank.

In one example embodiment, the pressure pump communicates with a second coolant storage tank.

In one example embodiment, a first coolant storage tank is in communication with a second coolant storage tank, and the cooling system also includes a second coolant supply pump that is located in the flow path between the first coolant storage tank and the second coolant storage tank .

In one example embodiment, a valve is located on the discharge line.

In one exemplary embodiment, the cooling unit includes a water jacket, the water jacket communicating with the coolant supply unit via the coolant supply line.

When applying the technical solution of the present disclosure, a pressure pump group is included to allow pumping fluid from the coolant return tank so that the pressure in the coolant return tank becomes negative and a certain pressure differential is formed between it and the coolant supply unit. Although there is a certain difference in height between the coolant supply unit and the coolant return tank, due to the formation of such a pressure differential, coolant can flow from the coolant supply unit to the coolant supply pipe under atmospheric pressure and then to the coolant return tank in series through the coolant return pipe and the suction pipe. In addition, in the presence of negative pressure in the cooling system, even if there is a leak in the cooling unit, there will be no spillage of the surrounding liquid or is unlikely to occur, as a result of which the risk of explosion of the high-temperature melt due to contact with the coolant caused by the spill will decrease. In addition, the design of the cooling system described above also helps to reduce flow resistance during cooling.

Brief Description of the Drawings

The description drawings that are part of this application are used to better understand the present disclosure. Schematic illustrations of embodiments and views of the present disclosure are used to explain the present disclosure and are not unnecessary limitations of the present disclosure. In the drawings:

FIG. 1 is a design diagram of a cooling system according to one embodiment of the present disclosure.

The drawings include the following reference characters:

10: coolant supply unit; 11: heat transfer device; 12: a first coolant storage tank; 13: coolant supply tank; 131: first overflow plate; 132: second overflow plate; 20: cooling unit; 21: coolant supply pipe; 30: coolant return unit; 31: coolant return pipe group; 311: coolant return pipe 312: suction pipe; 32: coolant return tank; 40: pressure pump group 41: injector; 42: discharge pump; 50: coolant buffer chamber; 60: a second tank for storing coolant; 70: first coolant pump; 80: second coolant pump.

Detailed Description of Embodiments

It should be said that the embodiments in the present application and the features in the embodiments can be combined without contradiction. The present disclosure will now be described in detail with reference to the drawings in connection with embodiments.

As stated in the "Background to the Invention" section, there is a problem in the prior art that circulating coolant can directly enter the furnace body from the setting site under pressure, which can easily lead to the explosion of a high temperature melt upon contact with coolant. In order to solve the above technical problem, the present disclosure provides a cooling system. As shown in FIG. 1, the cooling system includes: a coolant supply unit 10, a cooling unit cooling unit 20, a coolant return unit 30 and a pump group 40, the cooling unit cooling unit 20 communicating with the coolant supply unit 10 by means of a coolant supply pipe 21, the coolant return unit 30 includes a coolant return line group 31 and a coolant return tank 32, the coolant return line group 31 includes a pipe coolant return 311 and the suction pipe 312 in communication with the coolant return pipe 311, the channel of the coolant return pipe 311 from the suction pipe 312 communicates with the cooling unit 20, the suction pipe channel 312 from the coolant return pipe 311 communicates with the coolant return tank 32 , the horizontal plane of the coolant supply unit 10 is higher than the horizontal plane of the coolant return tank 32, the injection pump group 40 includes an injection a torus 41 and a discharge pump 42, an injector 41 communicates with a discharge pump 42, and an injector 41 is arranged in a communicating manner on the suction pipe 312.

When it is necessary to cool the object to be cooled, the injection pump group 40 is turned on to allow liquid to be pumped out from the coolant return tank 32, so that the pressure in the coolant return tank 32 becomes negative and a certain pressure drop is formed between it and the coolant supply unit 10. Although there is a certain height difference between the coolant supply unit 10 and the coolant return tank 32, due to the formation of the aforementioned pressure difference, the coolant from the coolant supply unit 10 may enter the coolant supply pipe 21 under atmospheric pressure and then into the tank 32 returning the coolant in series through the pipe 311 return of the coolant and the suction pipe 312. In addition, in the presence of negative pressure in the cooling system, the cooling unit 20 has a leak, and the spill of the coolant will not occur or is unlikely to occur, thereby reducing the risk of high temperature melt explosion in contact with the coolant caused by the spill of the latter. In addition, the design of the cooling system described above also helps to reduce flow resistance during cooling.

In the cooling system proposed in this application, the presence of a discharge pump group is beneficial to reduce the risk of an accident. In one example of the embodiment shown in FIG. 1, the coolant supply unit 10 includes: a heat exchange device 11; a first coolant storage tank 12 connected to the heat exchanger 11, and a coolant supply tank 13 provided with a channel connected to the first coolant storage tank 12 and a channel connected to the cooling unit 20. The presence of the heat exchange device 11 in the coolant supply unit 10 is favorable for cooling the coolant to the temperature required by the actual application conditions, and the presence of the first coolant storage tank 12 is favorable to ensure the supply of a sufficient volume of coolant.

In one example of the embodiment shown in FIG. 1, the coolant supply unit 10 also includes a coolant buffer chamber 50, the coolant buffer chamber 50 being located in the flow path between the coolant supply tank 13 and the first coolant storage tank 12.

The presence of a coolant buffer chamber 50 between the coolant supply tank 13 and the first coolant storage tank 12 is beneficial for reducing fluctuations in the surface of the liquid in the coolant supply tank 13, thereby increasing the pressure difference between the coolant supply unit 10 and the tank 32 coolant return. In addition, it is also favorable to ensure the actual supply of coolant, as this extends the life of the refrigerated object.

In the cooling system proposed in this application, the design of the coolant supply tank 13 is not particularly limited. In one example of the embodiment shown in FIG. 1, the first overflow plate 131 is located in the coolant supply tank 13, the first overflow plate 131 divides the coolant supply tank 13 into a first supply network and a second supply network, the height of the first overflow plate 131 is less than the height of the side wall of the coolant supply tank 13, the first coolant storage tank 12 is connected to the first supply network, and the coolant supply pipe 21 is connected to the second supply network. The presence of the first overflow plate 131 is beneficial to further reduce fluctuations in the surface of the liquid in the coolant supply unit 10, as a result of which the stability of the differential pressure between the coolant supply unit 10 and the coolant return tank 32 is further enhanced. In one example embodiment, a second overflow plate 132 is also located in the coolant supply tank 13, which divides the second supply network into a first supply subnet and a second supply subnet, wherein the height of the second overflow plate 132 is less than the side wall height of the coolant supply tank 13, the coolant supply pipe 21 is connected to the first supply subnet, and the coolant return tank 32 is connected to the second supply subnet. The second overflow plate 132 is designed to divide the second supply network into a first supply subnet and a second supply subnet, which is favorable for removing excess coolant from the coolant supply tank 13 while ensuring the stability of the vacuum environment.

In one example embodiment, the coolant supply unit 10 also includes a first coolant supply pump 70. As shown in FIG. 1, a first coolant pump 70 is located in a flow path between a first coolant storage tank 12 and a coolant buffer chamber 50. The presence of a first coolant supply pump 70 can provide a coolant supply from a first tank 12 for storing coolant to a coolant buffer chamber 50 under pressure.

In one example embodiment, the cooling system also includes a second tank 60 for storing coolant. As shown in FIG. 1, a second coolant storage tank 60 is connected to a coolant return tank 32. The connection of the second coolant storage tank 60 and the coolant return tank 32 is advantageous for receiving and reusing the coolant in the coolant return tank 32.

In the cooling system described above, the presence of group 40 of the injection pump allows you to create a vacuum environment in the cooling system, thereby effectively solving the problem of eliminating the dangerous situation when the circulating coolant enters the cooled object. The particular type of charge pump group 40 is not limited. In one example embodiment, the charge pump 42 is in communication with a second coolant storage tank 60. The communication of the pressure pump 42 and the second coolant storage tank 60 allows the pressure pump 42 to pump the resulting coolant to create a vacuum environment in the coolant return tank 32 and thereby reduce the risk of hazards.

In one example embodiment, a valve is located at the discharge port. The presence of a valve on the discharge pipe is favorable for further adjustment of the degree of vacuum in the cooling system depending on the need, due to which energy savings are achieved.

In one preferred embodiment, the first coolant storage tank 12 is in communication with the second coolant storage tank 60, the cooling system also includes a second coolant supply pump 80, and as shown in FIG. 1, a second coolant pump 80 is located in the flow path between the first coolant storage tank 12 and the second coolant storage tank 60. The communication of the first coolant storage tank 12 and the second coolant storage tank 60 is favorable for recycling the obtained coolant, and the presence of the second coolant supply pump 80 is favorable for generating a pressure of the circulating coolant.

In the cooling system proposed in this application, the design of the cooling unit 20 is unlimited, if and while it can work as cooling. In one preferred embodiment, the cooling unit 20 includes a water jacket that communicates with the coolant supply unit 10 through the coolant supply pipe 21. Like the cooling unit, the water jacket not only has a simple design and is easy to use, but also has features such as low cost and ease of replacement.

The coolant in the cooling system of the present disclosure is preferably water during actual use. Using water as a coolant helps to reduce cooling costs, while water as a coolant also has increased cooling efficiency.

Only the preferred embodiments of the present disclosure are described above, which are not intended to limit the present disclosure. Those skilled in the art will understand that various modifications and changes may be made to the present disclosure. Any modifications, equivalent replacements, enhancements, etc., made within the spirit and principle of this disclosure should fall within the scope of protection of this disclosure.

Claims (15)

1. The cooling system, including: block (10) coolant supply; a cooling unit (20) for cooling a cooled object in communication with a cooling liquid supply unit (10) by means of a coolant supply pipe (21); a coolant return unit (30) including a coolant return pipe group (31) and a coolant return tank (32), the coolant return pipe group (31) including a coolant return pipe (311) and a suction pipe (312), communicating with the coolant return pipe (311), the channel of the coolant return pipe (311) from the suction pipe (312) communicating with the cooling unit, the suction pipe channel from the cooling pipe (312) from the coolant return pipe (311) minute communicating with the tank (32) coolant return, the horizontal plane unit (10) supplying the cooling liquid is higher than the horizontal plane of the tank (32) returning coolant; and a group (40) of a pressure pump, including an injector (41) and a pressure pump (42), the injector (41) being in communication with the pressure pump (42), located on the suction pipe (312) and in communication with it. 2. The cooling system according to claim 1, characterized in that the coolant supply unit (10) includes a heat exchange device (11), a first coolant storage tank (12) connected to the heat exchange device (11), and a supply tank (13) coolant provided with a channel connected to the first tank (12) for storing coolant and a channel connected to the cooling unit (20). 3. The cooling system according to claim 2, characterized in that the coolant supply unit (10) includes a coolant buffer chamber (50), the coolant buffer chamber (50) located in the flow path between the coolant supply tank (13) liquid and the first tank (12) for storing coolant. 4. The cooling system according to claim 2, characterized in that the first overflow plate (131) is located in the coolant supply tank (13), while the first overflow plate (131) divides the coolant supply tank (13) into the first supply network and the second supply network, the height of the first overflow plate (131) is less than the height of the side wall of the coolant supply tank (13), the first coolant storage tank (12) is connected to the first supply network, and the coolant supply pipe (21) is connected to second mains supply. 5. The cooling system according to claim 4, characterized in that the second overflow plate (132) is located in the coolant supply tank (13), while the second overflow plate (132) divides the second supply network into a first supply subnet and a second supply subnet, the height of the second overflow plate (132) is less than the height of the side wall of the coolant supply tank (13), the coolant supply pipe (21) is connected to the first supply subnet, and the coolant return tank (32) is connected to the second supply subnet. 6. The cooling system according to claim 3, characterized in that the coolant supply unit (10) includes a first coolant supply pump (70), the first coolant supply pump (70) located in the flow path between the first tank (12) for storage of coolant and a buffer chamber (50) for coolant. 7. The cooling system according to claim 2, characterized in that it contains a second tank (60) for storing coolant, and the second tank (60) for storing coolant is connected to the tank (32) for returning the coolant. 8. The cooling system according to claim 7, characterized in that the pressure pump (42) is in communication with the second tank (60) for storing coolant. 9. The cooling system according to claim 7, characterized in that the first tank (12) for storing coolant is in communication with the second tank (60) for storing coolant, and the cooling system includes a second pump (80) for supplying coolant, while the second a coolant pump (80) is located in the flow path between the first coolant storage tank (12) and the second coolant storage tank (60). 10. The cooling system according to claim 1, characterized in that a valve is located on the discharge pipe. 11. The cooling system according to any one of paragraphs. 1-10, characterized in that the cooling unit (20) includes a water jacket, and the water jacket is in communication with the cooling fluid supply (10) through the coolant supply pipe (21).

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