JPH07120176A - Cooling apparatus - Google Patents

Abstract

PURPOSE:To keep cooling capability over a long period of time by providing a heat transfer medium for transferring heat to a pipe through the surface of an article to be cooled and through the pipe. CONSTITUTION:A cooling apparatus 1 includes a pipe 12 wound around the external surface of a body 11 singly a plurality of times, with opposite ends 12a, 12b of which a cooling water circulation apparatus is connected. A cooling fluid flows in from the one end 12b and flows out from the other end 12a. Heat of an article to be cooled produced from the body 11 is directly transmitted to the pipe 12 and is indirectly transmitted through a heat transfer medium 14 over the entire surface of the pipe 12 for heat exchange with the cooling fluid flowing in the pipe 12. Hereby, the body 11 can very effectually be cooled for improvement of maintainability.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cooling device.

[0002]

2. Description of the Related Art As a cooling device, there is one having a structure in which a cooling liquid is supplied to the periphery of an object requiring cooling to cool it.
As such a cooling device, for example, as shown in FIG. 5, annular end plates 2 and 2 are externally fitted around both ends of a cylindrical object to be cooled (hereinafter referred to as “object to be cooled”) 1. The outer cylinder 3 is welded over the circumference and is concentrically arranged outside the object 1 to be cooled. The both ends of the outer cylinder 3 are welded to the outer peripheral edges of the end plates 2 and 2 over the entire circumference, and the outer cylinder 3 is further drilled. The respective ends of the mouthpieces 4 and 5 are fitted into the two formed holes and fixed by welding over the entire circumference, and a box-shaped cooling chamber (jacket) 6 is formed concentrically directly outside the object to be cooled 1. There is a structure. In addition,
The object to be cooled 1, the outer cylinder 3, the end plates 2 and 2, the bases 4 and 5 and the like are formed of iron members such as carbon steel.

Then, the cooling liquid is supplied from one mouthpiece 4 to the cooling chamber 6, the cooling liquid in the cooling chamber 6 is discharged from the other mouthpiece 5, and the heat generated from the object 1 to be cooled is cooled by the cooling liquid. The object to be cooled 1 is directly cooled by heat exchange.

[0004]

However, when the cooling device having the above structure is used for a long period of time, impurities in the cooling liquid condense in the cooling chamber 6 and become thickly stuck to the wall surface or cooled. Since the liquid itself deteriorates due to heat and solidifies in the cooling chamber 6 and sticks thickly to the wall surface, the cross-sectional area through which the cooling liquid flows becomes extremely small, and the flow rate required for cooling cannot be secured. As a result, the cooling function may be deteriorated, and the operation of the apparatus that requires cooling may be forced to be stopped. Further, even if the cooling chamber 6 is disassembled and the internal scale is removed, it is possible to use it in a narrow field. Operations such as dismantling, scale removal, and re-welding are extremely difficult, and there is a very uneconomical problem that there is practically no other means but to renew the apparatus itself that requires cooling.

Further, since the cooling device having the above structure is a box structure having a structure in which members such as the end plates 2 and 2, the outer cylinder 3, and the bases 4 and 5 are welded to the object to be cooled 1, , Welded parts in the welded portion, cooling liquid, air contained in the cooling liquid, etc. easily causes local electrolytic corrosion,
In some cases, there is a problem in that the cooling liquid may leak into the inside of the device requiring cooling, which may hinder the operation of the device.

Further, when the object to be cooled is a high temperature and the furnace is made of carbon material or the like and water is used as the cooling liquid, if leaked water enters the furnace, water and carbon material There is also a problem that and react with each other to cause rapid wear, and if a large amount of water enters the furnace at one time, a steam explosion may occur. The present invention has been made in view of the above points, and it is possible to provide a cooling device capable of ensuring a cooling capacity for a long period of time and improving maintenance and operability. To aim.

[0007]

In order to achieve the above object, the present invention provides a pipe which is disposed on the surface of an object to be cooled and into which a cooling liquid flows in from one end and flows out from the other end, and the object to be cooled. And a heat transfer medium that covers the surface of the pipe and the pipe to transfer the heat of the object to be cooled to the pipe.

[0008]

The heat of the object to be cooled is transferred to the pipe arranged on the surface of the object to be cooled directly or via the heat transfer medium, and is exchanged with the cooling liquid flowing in the pipe. Thereby, the object to be cooled is efficiently cooled.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 and 2, the cooling device 10 is
An object requiring cooling (hereinafter referred to as "main body") 11, a pipe 12 arranged on the surface of the main body 11, a cover 13 concentrically covering the surface of the main body 11 and the pipe 12, a cover 13
The heat transfer medium 14 and the like are filled inside and cover the surface of the main body 11 and the pipe 12. The main body 11 is, for example, a cylindrical body, and both ends 11a and 11b are liquid-tightly or air-tightly connected to another device (not shown) to be mounted. The main body 11 is made of carbon steel, for example.

The pipe 12 is in close contact with the outer surface of the main body 11 and is wound a plurality of times so that the pipe 12 has both ends 12a,
12b are parallel to each other and extend laterally. The pipe 12 is formed of, for example, a copper member having good heat conductivity. The cover 13 has an annular end plate 13 at both ends.
The cylindrical body provided with a and 13b is divided into two along the axial direction to be a half-split type. The halves of the cover 13 are covered with a flange 15 on each mating surface.
a and 16a are formed, and bolt insertion holes 15b and 16b are bored in the center of these flanges so as to oppose each other.

Each of the covers 15 and 16 has a hole 1 through which both ends 12a and 12b of the pipe 12 pass through the side wall with a slight gap.
5c and 16c are provided, and one cover, for example,
A cap 17 is removably attached to a base 16e provided in a hole 16d formed in a side wall of the cover 16. For example, the cover 13 has an outer diameter of 2
Approximately 3 times, and the length is set slightly longer than the winding width of the wound pipe 12 (FIG. 2).
The inner diameters of a and 13b are slightly larger than the outer diameter of the main body 11. The cover 13 is formed of a metal member having good thermal conductivity, such as stainless steel.

The halves of the covers 15 and 16 have holes 15c,
Both ends 12a and 12b of the pipe 12 are penetrated by 16c,
It is attached to the main body 11 so as to concentrically cover the pipe 12, and the flanges 15a and 16a of the mating surfaces are abutted,
Bolts 18 in the corresponding bolt insertion holes 15b, 16b,
18 is inserted and fixed by nuts 19 and 19.
At this time, the flanges 15a and 16a are positioned in the vertical direction as shown in FIG. 1, and both ends 12a and 12b of the pipe 12 are aligned in the vertical direction.

Next, the heat transfer medium 14 is filled into the cover 13 from the mouthpiece 16e of the cover 16. This heat transfer medium 1
4 is preferably a member having good fluidity at the time of filling, filling all the gaps to fill the gaps, solidifying after a certain period of time, and having good heat conductivity. As such a heat transfer medium, for example,
Thermocement, which forms a gel during filling and hardens later
Alternatively, there is a mixture of thermocement and aluminum powder. When the heat transfer medium 14 is filled in the cover 13, the heat transfer medium 14 is provided between the end plates 13a and 13b and the main body 11 and between the holes 15c and 16c and the ends 12a and 12b of the pipe 12. The gap is so small that it does not flow out.

The operation will be described below. The cooling device 10 is
As shown in FIG. 1, both ends 12a and 12b of the pipe 12 are arranged so as to face in the vertical direction, both ends 12a and 12b are connected to a cooling water circulation device (not shown), and a cooling liquid flows in from one end 12b, It is set to flow out from the end 12a. The cooling liquid needs to be selected according to the cooling temperature of the object to be cooled, but ordinary water may be used.

The heat generated from the main body 11 is directly conducted to the pipe 12 and indirectly conducted through the heat transfer medium 14, and is conducted to the entire surface of the pipe 12 so that the heat inside the pipe 12 is maintained. Heat exchange with the flowing cooling liquid. Thereby, the main body 11 is cooled very efficiently. The heat conducted to the heat transfer medium 14 is also conducted to the cover 13 and radiated to the atmosphere. By the way, the temperature of the main body 11 is 40
When a cooling liquid having a temperature of 0 ° C., an outside air temperature of 27 ° C., and a temperature of 12 ° C. was flowed at a flow rate of 30 liters / minute, the temperature of the cooling liquid rose to 47 ° C. and the surface temperature of the cover 13 rose to 35 ° C. This cooling capacity has a heat exchange performance equivalent to that of the conventional cooling device.

FIG. 3 shows a case in which the main body 20 requiring cooling has, for example, a rectangular tube shape, and the cooling devices 21 are attached to the opposing side walls 20a and 20b, respectively. As shown in FIG. 4, the cooling device 21 is formed by bending a pipe 22 a plurality of times in a shape in which S-shapes are joined together, and both ends 22a and 22b extend substantially in parallel and extend to the same side. There is. This pipe 22 has a flat case 23
Both ends 22a and 22b are housed in the case 23.
Of the lower surface 23a of the lower surface 23a penetrates through the holes 23b and 23c and extends to the outside. Then, the case 23 is formed by being filled with the heat transfer medium 14. Case 2
Similar to the cover 13, the reference numeral 3 is made of stainless steel or the like having good heat conductivity and heat resistance.

In this cooling device 21, one end surface of a case 23 is brought into contact with the side surface 20a of the main body 20, and both ends 22a and 22b of the pipe 22 are arranged so as to be oriented vertically.
Both ends 22a and 22b of these are connected to a cooling liquid circulation device. Then, the cooling liquid flows in from one end 22a and flows out from the other end 22b. The cooling device 21 is similarly attached to the side surface 20b of the main body 20. As a result, the main body 20 is cooled as well as the cooling device 10 described above. It should be noted that cooling devices 21 may be provided on both upper and lower wall surfaces of the main body 20 to cool from the upper, lower, left, and right four sides.

In the above embodiment, the main bodies 11, 2 are
Although 0 is formed of carbon steel, the invention is not limited to this, and stainless steel or the like may be used. Further, as the pipes 12 and 22, other than copper members, stainless steel, aluminum, or the like may be used. Is also good. Further, the cover 13 of the cooling device 10 need not be particular about the material, but a member having high heat conductivity is preferable. The cover 13 is
It is not always necessary after the filled heat transfer medium 14 is solidified, and may be removed. Further, the case 23 of the cooling device 21 is preferably a metal member such as stainless steel having heat resistance because one end surface of the case 23 directly contacts the side wall of the main body 20.

[0019]

As described above, according to the present invention, the cooling liquid of the cooling device does not come into direct contact with the object to be cooled, so that even if the cooling device is damaged or corroded, the cooling liquid is not exposed. Penetration into the cooling object is prevented. Also,
Even when the cooling liquid leaks, the heat transfer medium is transmitted without leaking into the object to be cooled and leaks to the outside, so that it is easy to find and it is possible to quickly carry out abnormal processing. Further, even if the cooling device is installed in a narrow place, or if a large number of cooling devices are installed adjacent to each other, there is an excellent effect that the maintenance is easy.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a cooling device of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a perspective view showing another embodiment of the cooling device of the present invention.

4 is a cross-sectional view of the cooling device of FIG.

FIG. 5 is a cross-sectional view of a conventional cooling device.

[Explanation of symbols]

 1 Cooled Object 2 End Plate 3 Outer Cylinder 4, 5 Base 6 Cooling Chamber 10, 21 Cooling Device 11, 20 Main Body 12, 22 Pipe 13, 15, 16 Cover 14 Heat Transfer Medium 17 Cap 18 Bolt 19 Nut 23 Case

Claims (2)

[Claims] 1. A pipe arranged on the surface of an object to be cooled, into which a cooling liquid flows in from one end and flows out from the other end, and a surface of the object to be cooled and the heat of the object to be cooled by covering the pipe. A heat transfer medium that conducts to the pipe, and a cooling device. 2. The cooling device according to claim 1, wherein the pipe is in contact with the surface of the object to be cooled.