WO2017161992A1

WO2017161992A1 - Cooling system

Info

Publication number: WO2017161992A1
Application number: PCT/CN2017/074287
Authority: WO
Inventors: 黎敏; 邬传谷; 杨晓华; 陈希勇; 陈学刚; 王书晓; 王兴斌; 曹珂菲
Original assignee: 中国恩菲工程技术有限公司
Priority date: 2016-03-21
Filing date: 2017-02-21
Publication date: 2017-09-28
Also published as: ZA201806330B; RU2703664C1; CN105651057B; CN105651057A

Abstract

A cooling system comprises a refrigerant supply unit (10), a cooling unit (20) used for cooling a to-be-cooled object, a liquid seal groove (30) and a refrigerant recycling unit (40). The cooling unit (20) communicates with the refrigerant supply unit (10) through a refrigerant input pipe (21). The refrigerant recycling unit (40) comprises a refrigerant recycling pipe set (41) and a vacuum pump set (42). The refrigerant recycling pipe set (41) comprises a refrigerant recycling branch pipe (411), a vacuum pipe (412) and a siphon (413), all of which communicate with one another through the same port. The vacuum pump set (42) is connected with the vacuum pipe (412). The refrigerant recycling branch pipe (411) communicates with the cooling unit (20). The siphon (413) communicates with the liquid seal groove (30). The horizontal plane where the refrigerant supply unit (10) is located is higher than the horizontal plane where the liquid seal groove (30) is located. Due to the fact that a certain height difference exists between the refrigerant supply unit (10) and the liquid seal groove (30), cooling water in the refrigerant supply unit (10) can overcome resistance of a pipeline and enters the liquid seal groove (30) by itself. Due to the fact that the whole cooling system is in negative pressure, when the cooling unit is fractured, a refrigerant cannot overflow or hardly overflows, and accordingly production accidents caused by refrigerant overflow can be better reduced.

Description

cooling system

Technical field

The present invention relates to the field of metallurgy and, in particular, to a cooling system.

Background technique

In the metallurgical process, the lining of the high temperature metallurgical furnace needs to be cooled to keep the furnace lining at a lower temperature, which is beneficial to slowing the corrosion of the furnace body and thereby prolonging the life of the furnace body. Normally, positive pressure cooling is used for cooling. Positive pressure cooling means that the water pressure in the cooling water system from the inlet end to the outlet end is always higher than one atmosphere. In this environment, the cooling water pressure and flow rate are adjusted to take away the heat of the surface of the cooled object in time.

Positive pressure cooling has the characteristics of simple operation, easy adjustment of water pressure and water volume, and obvious cooling effect, but it also has shortcomings. If the flow resistance of the cooling water changes due to excessive passage angle or air residual in the pipeline, and the liquid flow is affected, and the cooling water jacket is used for cooling, if the cooling water jacket is damaged, a large amount of cooling water may overflow. This in turn causes serious safety production accidents.

Summary of the invention

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a cooling system that solves the problems of large water flow resistance and large safety hazards when using positive pressure cooling.

In order to achieve the above object, an aspect of the present invention provides a cooling system including: a refrigerant supply unit; a cooling unit for cooling the object to be cooled, communicating with the refrigerant supply unit through the refrigerant input pipe; and a liquid sealing groove; The refrigerant recovery unit comprises a refrigerant recovery pipe group and a vacuum pump group, and the refrigerant recovery pipe group comprises a refrigerant recovery branch pipe, a vacuum pipe and a siphon pipe which are connected through the same port, the vacuum pump group is connected with the vacuum pipe, the refrigerant recovery branch pipe is connected with the cooling unit, and the siphon pipe and the liquid are connected. The sealing groove is connected, and the horizontal surface of the refrigerant supply unit is higher than the horizontal plane where the liquid sealing groove is located.

Further, the refrigerant supply unit includes: a heat exchange device; a refrigerant storage tank connected to the heat exchange device; and a refrigerant supply tank having a port connected to the refrigerant storage tank and a port connected to the cooling unit.

Further, the refrigerant supply unit further includes a refrigerant buffer tank, and the refrigerant buffer tank is disposed on the flow path between the refrigerant supply tank and the refrigerant storage tank.

Further, a first overflow plate is disposed in the refrigerant supply tank, and the first overflow plate divides the refrigerant supply tank into a first supply grid and a second supply grid, and the height of the first overflow panel is lower than the side of the refrigerant supply tank The height of the wall, the refrigerant storage tank is connected to the first supply grid, and the refrigerant inlet pipe is connected to the second supply grid.

Further, a second overflow plate is disposed in the refrigerant supply tank, and the second overflow plate divides the second supply grid into a first sub-supply grid and a second sub-supply grid, and the second overflow panel has a lower height than the refrigerant The height of the side wall of the supply tank, the refrigerant inlet pipe is connected to the first sub-supply grid, and the liquid seal tank is connected to the second sub-supply grid.

Further, the cooling system further includes a refrigerant recovery unit, and the refrigerant recovery unit is connected to the liquid seal tank.

Further, the liquid sealing tank is provided with two third overflow plates, and the third overflow plate divides the liquid sealing tank into a first liquid sealing compartment, a second liquid sealing compartment and a third liquid sealing compartment, and a third overflowing panel The height is lower than the height of the side wall of the liquid sealing tank, the second sub-supply grid is connected to the first liquid sealing grid, the siphon tube is connected to the second liquid sealing grid, and the refrigerant recovery unit is connected to the third liquid sealing grid.

Further, a valve is provided on the vacuum tube.

Further, the refrigerant supply unit further includes a first refrigerant transfer pump, and the first refrigerant transfer pump is disposed on a flow path between the refrigerant storage tank of the refrigerant storage tank and the refrigerant buffer tank.

Further, the refrigerant storage tank is connected to the refrigerant recovery unit, and the cooling system further includes a second refrigerant delivery pump, and the second refrigerant delivery pump is disposed on the flow path between the refrigerant storage tank and the refrigerant recovery unit.

Further, the cooling unit includes a water jacket, and the water jacket is connected to the refrigerant supply unit through the refrigerant input pipe.

Applying the technical scheme of the invention, the vacuum pump group is turned on to discharge the air in the refrigerant input pipe, the refrigerant recovery branch pipe, the vacuum pipe and the siphon pipe, and the refrigerant in the refrigerant supply unit and the liquid sealing tank respectively enters the refrigerant input pipe and the siphon pipe under the action of atmospheric pressure, when The siphon phenomenon is formed when the liquid level in the refrigerant inlet pipe and the siphon pipe rises to a certain height and the two reach a certain height difference. Due to the certain height difference between the refrigerant supply unit and the liquid sealing tank, the cooling water in the refrigerant supply unit can enter the liquid sealing tank by itself after overcoming the resistance of the pipeline. At the same time, because the whole cooling system is under negative pressure, even if the cooling unit has a rupture phenomenon, the cold coal will not or rarely have an overflow phenomenon, which is beneficial to reduce the safety production accident caused by the refrigerant overflow. It can be seen that the cooling system provided by the invention not only helps to reduce the flow resistance during the cooling process, but also helps to reduce safety hazards.

DRAWINGS

The accompanying drawings, which are incorporated in the claims of the claims In the drawing:

1 is a schematic view showing the structure of a cooling system provided by an exemplary embodiment of the present invention.

Wherein, the above figures include the following reference numerals:

10, a refrigerant supply unit; 11, a heat exchange device; 12, a refrigerant storage tank; 13, a refrigerant supply tank; 131, a first overflow plate; 132, a second overflow plate; 20, a cooling unit; 30, liquid sealing tank; 31, third overflow plate; 40, refrigerant recovery unit; 41, refrigerant recovery pipe group; 411, refrigerant recovery pipe; 412, vacuum pipe; 413, siphon pipe; 42, vacuum pump group; a buffer tank; 60, a first refrigerant delivery pump; 70, a second refrigerant delivery pump.

detailed description

It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

As described in the background art, the existing positive pressure cooling has a problem of large water flow resistance and large safety hazard. In order to solve the above technical problem, the present invention provides a cooling system, as shown in FIG. 1, the cooling system includes: a refrigerant supply unit 10, a cooling unit 20 for cooling the object to be cooled, a liquid sealing tank 30 and a refrigerant recovery unit 40. The cooling unit 20 and the refrigerant supply unit 10 are in communication via a refrigerant input pipe 21; the refrigerant recovery unit 40 includes a refrigerant recovery pipe group 41 and a vacuum pump group 42. The refrigerant recovery pipe group 41 includes a refrigerant recovery branch pipe 411, a vacuum pipe 412, and a siphon pipe 413 which are connected through the same port. The vacuum pump group 42 is connected to the vacuum pipe 412, the refrigerant recovery branch pipe 411 is connected to the cooling unit 20, and the siphon pipe 413 is connected to the liquid sealing groove 30. The horizontal plane of the refrigerant supply unit 10 is higher than the horizontal plane of the liquid seal tank 30.

When the cooling object is required to be cooled, the vacuum pump unit 42 is turned on to discharge the air in the refrigerant inlet pipe 21, the refrigerant recovery pipe 411, the vacuum pipe 412, and the siphon pipe 413, and the refrigerant in the refrigerant supply unit 10 and the liquid sealing tank 30 is under atmospheric pressure. The refrigerant input pipe 21 and the siphon pipe 413 are respectively entered, and when the liquid level in the refrigerant inlet pipe 21 and the siphon pipe 413 rises to a certain height and the two reach a certain height difference, a siphon phenomenon is formed. Since there is a certain height difference between the refrigerant supply unit 10 and the liquid sealing tank 30, the cooling water in the refrigerant supply unit 10 can enter the liquid sealing tank 30 by itself after overcoming the resistance of the piping. At the same time, since the entire cooling system is under negative pressure, even if the cooling unit 20 has a cracking phenomenon, the cold coal will not or rarely have an overflow phenomenon, thereby facilitating the safety production accident caused by the refrigerant overflow. It can be seen that the cooling system provided by the invention not only helps to reduce the flow resistance during the cooling process, but also helps to reduce safety hazards.

In the actual use process, the vacuum pump group 42 can determine whether it should be in an open or closed state according to the degree of vacuum in the whole set of cooling system, and the water jacket leakage condition can also be judged according to the flow rate of the refrigerant recovery branch pipe 411 and the start and stop working frequency of the vacuuming unit. Refrigerants include, but are not limited to, water. The use of water as a refrigerant helps to reduce the cooling cost, while water as a refrigerant also has a higher cooling efficiency.

In a preferred embodiment, referring to FIG. 1, the refrigerant supply unit 10 includes a heat exchange device 11, a refrigerant storage tank 12, and a refrigerant supply tank 13, and the refrigerant storage tank 12 is connected to the heat exchange device 11, and the refrigerant supply tank 13 has The port connected to the refrigerant storage tank 12 also has a port connected to the cooling unit 20.

In a preferred embodiment, referring to FIG. 1, the refrigerant supply unit 10 further includes a refrigerant buffer tank 50 disposed on a flow path between the refrigerant supply tank 13 and the refrigerant storage tank 12. The formation of the siphon phenomenon requires a certain degree of vacuum on the refrigerant recovery line and the siphon tube 413. The page fluctuation in the refrigerant process tank may cause the sealing property of the refrigerant feed pipe 21 to deteriorate to impair the persistence of the siphon phenomenon. Providing the refrigerant buffer tank 50 between the refrigerant supply tank 13 and the refrigerant storage tank 12 is advantageous for reducing the fluctuation of the liquid surface in the refrigerant supply tank 13, thereby facilitating the stability of the siphon phenomenon.

In a preferred embodiment, referring to FIG. 1, a first overflow plate 131 is disposed in the refrigerant supply tank 13, and the height of the first overflow plate 131 is lower than the height of the side wall of the refrigerant supply tank 13. The first overflow plate 131 divides the refrigerant supply tank 13 into a first supply grid and a second supply grid. The refrigerant storage tank 12 is connected to the first supply grid, and the refrigerant feed pipe 21 is connected to the second supply grid. The provision of the first overflow plate 131 is advantageous for further reducing the fluctuation of the liquid level in the refrigerant supply unit 10, thereby facilitating further improvement of the stability of the siphon phenomenon.

In a preferred embodiment, referring to FIG. 1, a second overflow plate 132 is disposed in the refrigerant supply tank 13, and the height of the second overflow plate 132 is lower than the height of the side wall of the refrigerant supply tank 13. The second overflow plate 132 divides the second supply grid into a first sub-supply grid and a second sub-supply grid, the refrigerant input pipe 21 is connected to the first sub-supply grid, and the liquid seal tank 30 and the second sub-supply grid Connected. The provision of the second overflow plate 132 to separate the second supply grid into the first sub-supply grid and the second sub-supply grid facilitates recovery of excess refrigerant in the refrigerant supply tank 13 while ensuring the stability of the siphon phenomenon.

In a preferred embodiment, referring to FIG. 1, the cooling system further includes a refrigerant recovery unit 40 that is coupled to the liquid seal tank 30. It is advantageous to recover the refrigerant in the liquid sealing tank 30.

In a preferred embodiment, referring to FIG. 1, the liquid sealing tank 30 is provided with two third overflow plates 31, and the height of the third overflow plate 31 is lower than the height of the side walls of the liquid sealing groove 30. The third overflow plate 31 divides the liquid sealing tank 30 into a first liquid sealing compartment, a second liquid sealing compartment and a third liquid sealing compartment, and the second sub-supply grid is connected to the first liquid sealing compartment, the siphon 413 and the second liquid The seals are connected, and the refrigerant recovery unit 40 is connected to the third liquid seal.

As described above, the siphon phenomenon needs to maintain the degree of vacuum in the refrigerant recovery branch pipe 411 and the siphon pipe 413 at the same time, so that the provision of the two third overflow plates 31 is advantageous for reducing the fluctuation of the liquid level in the liquid sealing tank 30, thereby improving the refrigerant recovery. The tightness in the tube and the siphon tube 413, in turn, contributes to the stability of the siphon phenomenon.

In a preferred embodiment, referring to FIG. 1, the refrigerant storage tank 12 is in communication with the refrigerant recovery unit 40. The cooling system further includes a second refrigerant delivery passage disposed on the flow path between the refrigerant storage tank 12 and the refrigerant recovery unit 40. Pump 70. The communication of the refrigerant storage tank 12 with the refrigerant recovery unit 40 facilitates recycling of the recovered refrigerant.

In a preferred embodiment, referring to Figure 1, a vacuum tube 412 is provided with a valve. Providing a valve on the vacuum tube facilitates further adjustment of the vacuum in the cooling system as needed.

In a preferred embodiment, referring to FIG. 1, the refrigerant supply unit 10 further includes a first refrigerant delivery pump 60 disposed on a flow path between the refrigerant storage tank and the refrigerant buffer tank 50. The first refrigerant transfer pump 60 is provided to be able to supply power for the refrigerant to flow from the refrigerant storage tank 12 to the refrigerant buffer tank 50.

In the above-described cooling system provided by the present application, the configuration of the cooling unit 20 is not limited as long as it can function as a cooling. In a preferred embodiment, the cooling unit 20 includes a water jacket that communicates with the refrigerant supply unit 10 through a refrigerant feed pipe 21. As a cooling unit, the water jacket is not only simple in structure, convenient in use, but also has the characteristics of low cost and easy replacement.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A cooling system, characterized in that the cooling system comprises:

Refrigerant supply unit (10);

a cooling unit (20) for cooling the object to be cooled, communicating with the refrigerant supply unit (10) through a refrigerant input pipe (21);

Liquid sealing tank (30);

The refrigerant recovery unit (40) includes a refrigerant recovery pipe group (41) and a vacuum pump group (42), and the refrigerant recovery pipe group (41) includes a refrigerant recovery branch pipe (411) and a vacuum pipe (412) that are connected through the same port. a siphon tube (413), the vacuum pump group (42) is connected to the vacuum tube (412), the refrigerant recovery branch tube (411) is in communication with the cooling unit (20), the siphon tube (413) and the liquid The sealing groove (30) is in communication, and the horizontal direction of the refrigerant supply unit (10) is higher than the horizontal plane of the liquid sealing groove (30).
The cooling system according to claim 1, wherein the refrigerant supply unit (10) comprises:

Heat exchange device (11);

a refrigerant storage tank (12) connected to the heat exchange device (11);

The refrigerant supply tank (13) has a port connected to the refrigerant storage tank (12) and a port connected to the cooling unit (20).
The cooling system according to claim 2, wherein the refrigerant supply unit (10) further comprises a refrigerant buffer tank (50), and the refrigerant buffer tank (50) is disposed in the refrigerant supply tank (13) a flow path between the refrigerant storage tanks (12).
The cooling system according to claim 2, wherein a first overflow plate (131) is disposed in the refrigerant supply tank (13), and the first overflow plate (131) supplies the refrigerant supply tank (13) partitioning into a first supply grid, a second supply grid, a height of the first overflow panel (131) being lower than a height of a sidewall of the refrigerant supply tank (13), the refrigerant storage tank (12) And connected to the first supply grid, the refrigerant input pipe (21) is connected to the second supply grid.
The cooling system according to claim 4, wherein a second overflow plate (132) is further disposed in the refrigerant supply tank (13), and the second overflow plate (132) is to be the second The supply grid is partitioned into a first sub-supply grid and a second sub-supply grid, the height of the second overflow panel (132) being lower than the height of the sidewall of the refrigerant supply tank (13), the refrigerant input pipe ( 21) connected to the first sub-supply grid, the liquid seal tank (30) being connected to the second sub-supply grid.
The cooling system according to claim 5, wherein said cooling system further comprises a refrigerant recovery unit (40), said refrigerant recovery unit (40) being coupled to said liquid seal tank (30).
The cooling system according to claim 6, wherein said liquid sealing tank (30) is provided with two third overflow plates (31), said third overflow plate (31) sealing said liquid seal The groove (30) is partitioned into a first liquid sealing compartment, a second liquid sealing compartment and a third liquid sealing compartment, and the height of the third overflow panel (31) is lower than the sidewall of the liquid sealing tank (30) Height, said The second sub-supply grid is connected to the first liquid sealing compartment, the siphon tube (413) is connected to the second liquid sealing compartment, and the refrigerant recovery unit (40) is connected to the third liquid sealing compartment.
The cooling system according to claim 6, wherein said refrigerant storage tank (12) is in communication with said refrigerant recovery unit (40), said cooling system further comprising a second refrigerant delivery pump (70), The second refrigerant transfer pump (70) is disposed on a flow path between the refrigerant storage tank (12) and the refrigerant recovery unit (40).
The cooling system of claim 1 wherein said vacuum tube (412) is provided with a valve.
The cooling system according to claim 3, wherein the refrigerant supply unit (10) further comprises a first refrigerant transfer pump (60), and the first refrigerant transfer pump (60) is disposed in the refrigerant storage tank (12) A flow path between the refrigerant storage tank and the refrigerant buffer tank (50).
The cooling system according to any one of claims 1 to 10, wherein the cooling unit (20) includes a water jacket, and the water jacket passes through the refrigerant input pipe (21) and the refrigerant supply unit (10) Connected.