JPH03287486A - Cooled liquid carrying vessel - Google Patents

Abstract

PURPOSE:To efficiently cool the whole cooled liquid by forming multiple frame- shaped high ribs on the outer periphery of a tank for a cooled liquid at an interval in the longitudinal direction, covering the whole outer periphery end sections of large ribs, and forming multiple cooling air circulating air ducts on the outer periphery of the tank. CONSTITUTION:A tank for a cooled liquid such as juice arranged on a cooled liquid carrying vessel is formed into a nearly rectangular parallelopiped shape, many low small ribs 22 extended in the longitudinal direction are formed in parallel on the outer periphery of the tank 21, and multiple high frame-shaped large ribs 23 are formed at an interval. A heat insulating material 25a covering the spaces between the large ribs 23 is fixed at the outer periphery end sections of the large ribs 23, and multiple cooling air circulating air ducts 30 partitioned by the large ribs 23 are formed on the outer periphery of the tank 21. A cooling room 31 is formed on the upper wall portion of the heat insulating material 25a, and the cooling air is circulated in the cooling air circulating air ducts 30 by the action of an air cooler 38 provided on a partition 35 in the cooling room 31.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cooling limb carrier for transporting cooling liquid such as juice in bulk and keeping it cool.

BACKGROUND OF THE INVENTION FIG. 8 shows a conventional cooling liquid carrier, which is configured as a cargo tank with a tank 3 for cooling limbs or an integral tank construction. In Fig. 8, both sides of the hull are composed of double skin plates 1°2 with a space SL, and the inner skin plate 2 directly forms the left and right sides of a tank 3 for cooling liquid. ing.

The bottom of the ship has a double bottom plate 7 so as to have a ballast tank 5.
8, the upper bottom plate (tank top) 8 directly forms the bottom surface of the tank 3, and by draining the seawater from the ballast tank 5 when transporting cooling liquid, the ballast tank 5 can be transformed into a space S2 for thermal isolation. It is used as. The upper surface of the tank 3 is covered by an upper deck 10.

A cooling cylinder 13 and a stirring impeller 14 are immersed in the tank 3, and a refrigerant pipe 15 using Freon gas or the like as a cooling medium is installed inside the cooling cylinder 13 and connected to a cooling unit 17 outside the tank 3. The stirring impeller 14 is connected to and driven by a motor 18 outside the tank.

When transporting cooling liquid, the tank 3 blocks heat from entering from the seawater through the surrounding spaces SL and S2, and inside the tank 3, the cooling liquid sucked in from below by the stirring impeller 14 is cooled in the cooling cylinder 13. By discharging from above, the liquid itself is directly cooled and circulated through the three tanks.

However, the conventional structure as shown in FIG. 8 has the following problems.

(1) Both sides and bottom of the tank 3 are simply spaces S1 and S.
Since it is only shielded from the seawater by the static air inside 2, we cannot expect much of an insulation effect. Further, the upper deck 10 on the upper surface of the tank 3 is exposed to direct sunlight and its temperature increases. Due to these factors, a rise in temperature within the tank 3 is unavoidable, making temperature control difficult.

(2) Although the cooling liquid is stirred and circulated, the refrigerant pipe 15 and stirring impeller 14 are directly immersed in the cooling liquid, and the highly viscous cooling liquid is directly and locally cooled. It is difficult to control the circulation flow rate by the stirring impeller 14, and there is a possibility that the cooling liquid may freeze in the cooling cylinder 13 and stop circulating.

[Purpose of the Invention] An object of the present invention is to effectively block heat from entering from outside such as seawater or the tip of the tank, and to cool the entire tank from the outer circumferential surface of the tank with cold air. It is an object of the present invention to solve the problems of the above-mentioned conventional techniques by making it possible to uniformly and efficiently cool the entire cooled body inside the cooling body.

Another object of the present invention is to facilitate installation in a ship's hold by unitizing the tank and the cooling air circulation path as a tank structure.

[Technical means for achieving the object] In order to achieve the above object, the invention according to claim 1 of the present application is as follows:
A plurality of small bones extending in the front-rear direction are formed on the outer circumferential surface of the cooling liquid tank, and a plurality of frame-shaped tall large bones are formed orthogonally to the above-mentioned small bones at intervals in the front-rear direction. By covering the entire end with heat insulating material, multiple cooling air circulation channels separated by large ribs are formed on the outer circumferential surface of the tank, and an air cooler with a fan is placed above each cooling air circulation channel. Cooling air is circulated in each cooling air circulation path, and the tank structure consisting of the tank, heat insulating material, and air cooler is housed and supported inside the hold via a support stand.

In the invention as claimed in claim 2, in order to further improve the uniform cooling effect, a plurality of small bones extending in the front-rear direction are formed on the outer circumferential surface of the tank for cooling liquid, and a frame-shaped back is formed orthogonally to the small bones. By forming a plurality of tall large bones at intervals in the front and back direction and arranging a heat insulating material that covers the entire tank, there are multiple upper air passages and side air passages separated by the large bones on the top and left and right sides of the tank. A front and rear air passage is formed on the front and rear sides of the tank, a lower air passage is formed below the lower end of the main bone on the lower side of the tank, and a chamber is formed in the upper air passage.
A return air passage communicating with the front and rear air passages is formed on the outside of the chamber chamber, and an air cooler equipped with a fan that sends cooling air from the return air passage to the chamber chamber is installed in the return air passage. The tank structure consisting of the tank, heat insulating material, and air cooler is supported inside the hold so that the air returns from the room to the return air path via the upper air path, side air path, lower air path, and front and rear air paths in order. It is stored and supported via a stand.

[Embodiment of the invention as claimed in claim 1] Figures 1 to 3 show a cooling liquid carrier to which the invention as claimed in claim 1 of the present application is applied. First, the tank structure will be explained with reference to Figure 3. The cooling liquid tank 21 is formed in a generally rectangular parallelepiped shape, and a large number of short bones 22 extending in the front-rear direction are formed in parallel with each other on the outer peripheral surface of the tank 21. Further, on the outer peripheral surface of the tank 21, there are a plurality of tall frame-shaped large bones 23 (for example, five bones) spaced apart in the front and back direction.
The large bones 23 at the front and rear ends are located at the front and rear end surfaces of the tank 21. Note that the number of the large bones 23 may be at least three or more.

A heat insulating material 25a that covers the space between the large bones 23 is fixed to the outer peripheral end of each large rib 23, and the heat insulating material 25a maintains a distance from the outer circumferential surface of the tank. A plurality (for example, four) of cooling air circulation channels 30 are formed surrounding this and separated by the large ribs 23.

A cooling chamber 31 is formed in the earthen wall portion of the heat insulating material 25a and extends substantially over the entire length of the tank 21 in the front-rear direction, and the cooling chamber 31 is also formed of the heat insulating material 25c.

The lower surface of the cooling chamber 31 communicates with the upper end of the cooling air circulation path 30, and a partition 35 is provided in the cooling chamber 31 to partition the cooling chamber 31 into a suction section 31a on the right side and a discharge section 31b on the left side.

A heat insulating material 25b is placed on each of the front and rear end surfaces of the tank 21 so as to cover the entire end surface, and there is no space between the front and rear end surfaces of the tank 21 and the heat insulating material 25b. In FIG. 1, an air cooler 38 is provided in the partition 35 in the cooling chamber 31 and passes through the partition 35. On the suction side of the air cooler 38, the air cooler 38 is connected from the suction portion 31a to the discharge portion 31b.
A fan 39 is provided to force air through the interior.

Although not shown, a refrigerant pipe is arranged inside the air cooler 38,
The refrigerant pipe is connected to a cooling unit outside the tank, and a refrigerant such as Freon gas, which has been cooled to about -50° C. by the cooling unit, is sent into the air cooler 38 to cool the cooling air.

As described above, the cooling air circulation passage 30 and the air cooler 38
The tank structure is housed in the hold 41 and is supported within the hold 41 via a plurality of support stands 44 .

To explain the support structure in detail, in Figure 2, the ship hold 4
Generally, a large number of frames (ribs) 35 are formed on the west side of the outer panel 36 etc. that constitute the wall of 1.
The interval is usually set to a constant interval d1. On the other hand, when installing the tank, each large bone 23 is attached to one of the frames 3.
The position and interval d2 of the large bones 23 are set so that they are located at positions corresponding to 5. Each large bone 23 is supported by the frame 35 via the support stand 44 as described above.

The cargo area of the ship is divided into a plurality of holds 41 by bulkheads 47 spaced apart in the longitudinal direction, and each hold 41 is provided with a tank structure.

As the heat insulation +4' 25a, a structure in which urethane foam 49 (or glass wool) or the like is sandwiched between two temporary layers 48 is used. The structure of the inner wall of the tank 21 is made of so-called clad steel. a is made of smooth stainless steel with no irregularities, and the outer peripheral layer 21b is made of a steel plate.
The circle 22 and the large bone 23 are welded together. Furthermore, tank 21
The structure of the inner wall body is not limited to rad steel as described above, but can also be entirely made of stainless steel.

Explain the operation. When transporting a cooling liquid such as juice in the tank 21, the air (for example, -30°C) that is sucked in from the suction part 31a by the fan 39 in FIG. 1 and cooled in the air cooler 38 is discharged. Part 31b
The cooling air is sent to the upper left side of the cooling air circulation path 30, circulates within the cooling air circulation path 30 as shown by the arrow, cools the entire tank 21 uniformly from the outer circumferential side, and returns to the cooling chamber 31 again where it is cooled by the refrigerant. cooled down.

Heat from the seawater or sunlight from above can be absorbed by insulation materials 25
First, it is effectively blocked by the cooling air circulation passage 30, and then by the cooling air flowing in the cooling air circulation passage 30 section.

[Embodiment of the invention claimed in claim 2 Figures 4 to 7 show a cooling liquid carrier to which the invention claimed in claim 2 is applied, and parts having the same structure as in Figures 1 to 3 are designated by the same numbers. , and detailed explanation will be omitted.

In FIG. 7, the cooling liquid tank 21 is formed with short small bones 22 and tall frame-shaped large bones 23 similar to those shown in FIG. The large bones 23 at the front and rear ends are located at the front and rear end surfaces of the tank 21 . On the outer periphery of the tank 21 are large bones 23 and heat insulating materials 25a, 2 fixed to these.
A cooling air circulation path 30 is formed by 5b etc.
The cooling air circulation air passage 30 is an upper air passage 30a at the upper part of the tank.
It consists of side air passages 30b on both sides of one tank, a lower air passage 30c at the bottom of the tank, front and rear air passages 3d, and a return air passage 51.

The upper air passage 30a and the side air passage 30b are divided into a plurality of sections (for example, four) by the large ribs 23, and are surrounded by the large ribs 23, the outer peripheral surface of the tank, and the heat insulating material 25a. The lower air passage 30c is formed below the main bone 23 over the entire length in the front-rear direction by positioning the lower wall of the heat insulator 25a below the lower edge of the main bone 23. Front and rear air passages 30d
is formed between the front and rear end surfaces of the tank 21 by arranging the heat insulators 25b at intervals with respect to the front and rear ends of the tank 21, and the lower part thereof communicates with the lower air passage 30C.

The return air passage 51 is formed in the earthen wall of the heat insulating material 25a in an upwardly projecting shape, extends over the entire length of the tank 21 in the front-rear direction, and is surrounded by the heat insulating material 25c. The front and rear ends of the return air passage 51 communicate with the upper end of the front and rear air passage 30d. A chamber chamber 50 is formed in the return air passage 51 integrally with the earthen wall of the heat insulating material 25a.

In FIG. 5, a chamber 50 extends over the entire length of the tank 21 in the front-rear direction, and an air cooler 38 is provided on the earthen wall of the chamber 50.

A fan 39 is provided in the upper part of the air cooler 38 so as to correspond to each of the four upper air passages 30a, and air is passed through the air cooler 38 from the return air passage 51 to the chamber chamber 50.
It is designed to send cooling air to the Although not shown, a refrigerant pipe is disposed inside the air cooler 38, and the refrigerant pipe is connected to a cooling unit outside the tank, and the cooling unit is connected to a cooling unit, for example -
A refrigerant such as Freon gas cooled to about 50° C. is sent into the air cooler 38 to cool the cooling air.

The tank structure including the cooling air circulation passage 30, air cooler 38, etc. is housed in the hold 41 in the same manner as the structure explained in FIG. and is supported within the hold 41.

The side switch structure such as the heat insulating material 25a and the clad steel structure of the tank itself are the same as the structure '' explained in FIG.

Explain the operation. When transporting cooling liquid such as juice in the tank 21p9, each fan 3 in Fig. 4
The air sucked in from the return air passage 51 by the air cooler 9 and cooled in the air cooler 38 is separated from the chamber chamber 50 to the left and right to each upper air passage 30a, and descends through each side air passage 30b. At this time, as shown in FIG. 5, the air flows smoothly within each side air passage 30b guided by the large bones 23.

The cooling air that has reached the lower end enters the lower air passage 30c, separates into the front and rear, and flows into the front air passage 30d and the rear air passage 30d.
The air then rises in the front and rear air passages 30d as shown in FIG.

Then, it returns to the return air path 51 and is cooled again by the air cooler 38.

[Effects of the Invention] As explained above, according to the invention of Claims 1 and 2 of the present application, (1) Tall frame-shaped bones 23 are arranged at intervals in the front and back directions on the outer peripheral surface of the tank 21 for cooling liquid. By forming a plurality of cooling air circulation passages 30 with a large rib 23 and covering the entire outer peripheral end of the large rib with a heat insulating material 25a, a plurality of cooling air circulation air passages 30 separated by the large rib 23 are formed on the outer circumferential surface of the tank, and each cooling air circulation An air cooler 38 having three fans is placed in the upper part of the air passage so that the cooling air circulates within the cooling air circulation air passage 30, so that the entire tank 21 is uniformly and efficiently cooled from the outer peripheral surface. It can also effectively block temperature increases caused by seawater or sunlight.

Therefore, as in the conventional integrated tank structure shown in Fig. 8, the cooling liquid may be partially frozen due to local cooling.
In addition, there is no risk that cooling will be uneven or that temperature control will become difficult.

(2) The air cooler 38 and its fan 39 are connected to the tank 21
Since the air cooler is not placed inside the cooling liquid, maintenance management is easier than the conventional structure shown in FIG. 8, in which the air cooler is immersed in the cooling liquid and the cooling liquid itself is stirred and cooled.

(3) Reinforcement bones 50 extending in the front-rear direction on the outer circumferential surface of the tank
At the same time, tall frame-shaped large bones 51 are provided at multiple locations spaced apart in the front-rear direction, so the cooling air is guided by the large bones 23 and flows smoothly around the outer circumference of the tank 21. Furthermore, the small bones 22 and the large bones 23 also serve as cooling fins, further improving cooling efficiency.

(4) Since the tank 21, the heat insulating material 25a, and the air cooler 38 form a tank structure separate from the ship's hull, and the tank structure is housed and supported inside the hold via the support stand 44, The construction of the tank 2 inside the hull is easy.

According to the invention as claimed in claim 2, the front and rear air passages 30d are formed on the front and rear end surfaces of the tank 21, and cooling air is flowed into the front and rear air passages 30c via the lower air passage 30c, so that the front and rear ends of the tank 21 are also cooled. This further improves the cooling effect of the cooling liquid.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a cooling carrier to which the invention according to claim 1 is applied, Fig. 2 is an enlarged partial cross-sectional view taken along the line ■-■ of Fig. 1, and Fig. 3 shows a part of the tank structure of Fig. 1. FIG. 4 is a cross-sectional view of a refrigerated carrier to which the invention according to claim 2 of the present application is applied; FIG. 5 is a cross-sectional view taken along line V-■ in FIG. 4; and FIG. 6 is a cross-sectional view taken along line ■- FIG. 7 is a partially cutaway perspective view of the tank structure shown in FIG. 4, and FIG. 8 is a sectional view of a conventional carrier ship. 21...Tank, 22...Small ribs, 23...Big bones, 25a...Insulating material, 30...Cooling air circulation air passage, 30a...Upper air passage, 30b...
Side air passage, 30C... Lower air passage, 30d... Front and rear air passage, 38... Air cooler, 3... Fan, 50.
...Chamber room, 51...Return air path

Claims (2)

[Claims] (1) A plurality of ossicles extending in the front-rear direction are formed on the outer peripheral surface of the cooling liquid tank, and a plurality of frame-shaped tall bones are formed orthogonally to the ossicles at intervals in the front-rear direction,
By covering the entire outer peripheral edge of the large rib with a heat insulating material, a plurality of cooling air circulation channels separated by the large rib are formed on the outer circumferential surface of the tank, and a fan is installed at the top of each cooling air circulation channel. A cooler is arranged so that cooling air circulates in each cooling air circulation air passage, and the tank structure consisting of the tank, insulation material, and air cooler is housed and supported inside the hold via a support stand. A cooling liquid carrier with special features. (2) forming a plurality of small bones extending in the front-rear direction on the outer peripheral surface of the cooling liquid tank, and forming a plurality of frame-shaped tall bones perpendicular to the small bones at intervals in the front-rear direction;
By arranging insulation material that covers the entire tank, we have created multiple upper and side air channels separated by large bones on the top and left and right sides of the tank, and front and rear air channels on the front and rear sides of the tank.
At the bottom of the tank, a lower air passage is formed below the lower end of the main bone, a chamber is formed in the upper air passage, and a return air passage that communicates with the front and rear air passages is formed outside the chamber. An air cooler equipped with a fan that sends cooling air from the return air passage to the chamber is installed in the return air passage, and cooling air is sent from the chamber to the upper air passage, side air passage, lower air passage, and front and rear air passages. A cooling liquid transport ship, characterized in that a tank structure consisting of the tank, a heat insulating material, and an air cooler is housed and supported inside the hold via a support stand.