JPH0640152Y2 - Insulation structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a heat insulating structure used in a cylindrical storage tank for storing contents such as chemical products and foods by shielding them from external temperature. .

[Conventional technology]

In general, chemical products and foods are often produced by utilizing, for example, chemical reactions and fermentation. For these chemical reactions and fermentation, it is necessary to maintain the temperature within a certain range for a predetermined time. This is because it is necessary to promote or suppress activation of chemical reactions such as catalysts and enzymes in fermentation. Therefore, the above-mentioned chemical products and foods are often stored in a storage tank capable of maintaining the temperature of the contents at a predetermined temperature.

The above-mentioned storage tank usually has a storage tank body formed in a cylindrical shape in order to enhance the strength of the structure. Further, the storage tank is provided with a heat insulating means so that the temperature inside the storage tank body can be efficiently maintained. In this heat insulating means, the storage tank main body is covered with, for example, glass wool, and a heat insulating board such as expanded polystyrene is further provided around the main body.

Traditionally, the above insulation board is 900mm and 600mm in length and width.
And is formed in a flat plate shape with a thickness of 50 mm or 75 mm.
Then, as shown in FIGS. 4 and 5, the heat insulating boards 21 ... Are temporarily fixed one by one with a stretchable rubber band around the storage tank main body 22 on which the glass wool 23 and the like are provided. After that, it is laminated in 2-3 layers and the steel belt 20 ...
It is fixed at.

As a result, the heat insulating board 21 can be easily assembled to the storage tank body 22. Further, the storage tank is less susceptible to the temperature change outside the storage tank due to the heat insulating boards 21.

However, the conventional heat insulating board 21 has a problem that it is difficult to bring the end surfaces of the heat insulating board 21 into contact with each other with high accuracy after the heat insulating board 21 is assembled to the side wall of the storage tank body 22.

This is because the flat plate-shaped heat insulating board 21 is formed to have the same size on both sides, while the side wall of the storage tank main body 22 forms an arcuate curved surface. That is, as shown in FIG. 5, the heat insulating board 21 is assembled via the glass wool 23 along the side wall of the storage tank main body 22 having a curved surface with an arcuate cross section. Also, the insulation board 21 is 50 mm or 75
It has a thickness of mm. Therefore, the insulation board 21 ...
The peripheral length formed on both surfaces of the heat insulating board 21 varies depending on the thickness of the heat insulating board 21.

That is, the peripheral length formed at the position of the storage tank main body 22 side of the heat insulating board 21 ... Is shorter than the peripheral length formed at the position of the other surface. Therefore, when the above-mentioned heat insulating boards 21 ... Are assembled along the side wall of the storage tank body 22, non-contact portions 24. Will be done.

When these non-contact portions 24 ... Are left unattended, the temperature inside the storage tank body 22 is more likely to leak to the outside than the non-contact portions 24. It becomes easy to be transmitted to. As a result, the storage tank cannot sufficiently obtain the heat insulating effect of the heat insulating boards 21.

Therefore, when a part of the heat insulating board 21 is filled in the non-contact portions 24, the heat insulating effect can be improved, but an extra filling work is required when the end surfaces of the heat insulating board 21 are butted against each other. Is causing the problem.

Therefore, in order to avoid the above problem, Japanese Patent Laid-Open No. 54-9052
In the publication, a fibrous heat insulating material which is deformable to some extent is formed in a flat plate shape and wound around the outer circumference of the pipe. However, since the fibrous heat insulating material as described above is fibrous, it is difficult to obtain a uniform thickness when formed into a flat plate shape, and the heat insulating effect becomes uneven.

Therefore, in order to avoid the above problem, in Japanese Utility Model Laid-Open No. 59-86496, a flat low-elasticity cold insulating material having both ends cut so that the cross section has a trapezoidal shape is attached so as to wrap around the outer periphery of the low temperature pipe. Has been. By thus forming the low-elasticity cold insulating material into a trapezoidal shape, both end faces of the low-elasticity cold insulating material can be joined airtightly, and thus the airtightness of the cold insulating layer formed by the low-elasticity cold insulating material can be maintained. .

[Problems to be solved by the device]

However, in the above conventional configuration, since the low-elasticity cold insulating material has a trapezoidal shape in which both end surfaces thereof are obliquely cut, cutting waste is generated during cutting to form each of the oblique end surfaces. However, there is a problem that waste is generated in the formation of the trapezoidal low-elasticity cold insulating material.

Therefore, according to the present invention, the end faces of each heat insulating board having a uniform thickness can be easily and accurately butted, the uniform and good heat insulating effect can be maintained, and the heat insulating board is wasteful in forming the heat insulating board. The object is to provide a heat insulating structure that can avoid the occurrence of

[Means for Solving the Problems]

In order to solve the above problems, the heat insulating structure of the present invention is a heat insulating structure in which a plurality of flat heat insulating boards are assembled adjacent to each other along the outer peripheral wall of a cylindrical storage tank body. Each heat insulating board is formed by obliquely cutting a substantially rectangular plate-like heat insulating material so that the cross section thereof has a uniform trapezoidal shape, and a surface including each short side of the trapezoidal both end surfaces of the heat insulating board is the outer circumference. It is characterized in that it is assembled so as to face the wall, and the cut surface of the heat insulating board is brought into contact with the end surface of the other heat insulating board adjacent to the cut surface.

[Action]

According to the above configuration, when the flat heat insulating board is provided along the outer peripheral wall of the cylindrical storage tank main body, each circumferential length formed at both radial positions on the curved heat insulating board is: It depends on the thickness of the heat insulating board and the curvature of the outer peripheral wall.

From this, each heat insulating board having a uniform trapezoidal cross section, according to the difference in each peripheral length, by adjusting the angle at which the substantially rectangular plate-shaped heat insulating material is obliquely cut,
The heat insulating board is formed so that the difference in dimension between the short side and the long side of the trapezoidal cross section is substantially equal to the difference in the peripheral lengths.

As a result, in the above configuration, the heat insulating boards having the above-mentioned dimensional difference are adjacent to each other such that the surfaces including the short sides of the trapezoidal end surfaces in the cross section are on the outer peripheral wall side of the storage tank body. Assembling, and by bringing the cut surface of the heat insulating board into contact with the end surface facing the cut surface of another heat insulating board adjacent to each other, it is possible to form a surface contact without a gap between the adjacent heat insulating boards. .

As a result, in the above configuration, when the heat insulating boards are assembled adjacent to each other along the outer peripheral wall of the storage tank body, the contact surfaces of the adjacent heat insulating boards should be brought into close contact with each other with high precision. Since each heat insulating board is flat and has a uniform thickness, the uniform heat insulating effect of each heat insulating board can be maintained.

Moreover, in the above configuration, since the contact surfaces of the adjacent heat insulating boards are closely butted with each other with high precision, the above-mentioned method for filling the gap generated when the end surfaces of the heat insulating boards are butted against each other as in the conventional case. The work of filling the gap can be omitted.

By the way, conventionally, in order to closely abut the end faces of the adjacent heat insulation boards, in the case of making the heat insulation board trapezoidal by cutting off both end surfaces of the rectangular plate-like heat insulation material obliquely, cutting waste and There was a waste of the heat insulating material.

However, in the above configuration, each heat insulating board is formed by obliquely cutting a heat insulating material having a substantially rectangular plate shape so that the cross section thereof has a uniform trapezoidal shape, and one of the cut heat insulating boards is placed above and below the heat insulating board. Since the left and right sides are reversed to be used in the same manner as the other heat insulating board, it is possible to avoid the above-mentioned conventional waste.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

As shown in FIG. 1, the insulation board 4 ...
Is equipped with. The storage tank 10 has a storage tank body 1 that stores contents 7 such as beer. The storage tank body 1 has a columnar shape with an inner diameter of 6 m 40 cm and a height of 27 m.

Around the storage tank body 1, for example, cooling pipes 2 that wind cooling water or the like to cool the storage tank body 1 are wound. Further, the storage tank body 1 is provided with mat-shaped glass wool 3 which is a heat insulating means.

Around the glass wool 3, there is provided a heat insulating board 4 which is a heat insulating means such as foamed polystyrene. The heat insulation boards 4 ... Are laminated in two or three layers and are fixed by, for example, a steel belt (not shown). The storage tank 10 can block the contents 7 contained in the storage tank main body 1 from the outside temperature by the heat insulating boards 4 ... And the glass wool 3.

Further, a waterproof sheet 5 such as an asphalt sheet is provided around the heat insulating boards 4 ... Further, a protective sheet 6 such as vinyl chloride or a coated iron plate is provided around the waterproof sheet 5. As a result, the storage tank 10 can sufficiently withstand changes in temperature and climate.

The insulation board 4 used in the storage tank 10 is
As shown in Fig. 2, a rectangular flat plate with a length of 900 mm and a width of 600 mm and a thickness of 50 mm or 75 mm is cut diagonally to both sides at the center position and divided into two pieces. is there. As a result, each of the heat insulation boards 4 ... Is formed in a trapezoidal shape with one side slope having a uniform cross section. The heat insulating material is made of a foaming synthetic resin such as styrofoam having heat insulating property, and thus the heat insulating board 4 has heat insulating property.

Therefore, each of the above-described heat insulating boards 4 includes the trapezoidal lower side 4a or the lower side 4d having a relatively long dimension when the dimensions formed by one surface and the other surface of each parallel surface are compared. Trapezoidal upper side (short side) 4b whose dimensions are relatively short to the surface
Alternatively, it has a surface including the upper side 4c.

The cut heat insulating boards 4 are assembled adjacent to each other with the surface including the trapezoidal upper side 4b or the upper side 4c on the inner peripheral side facing the storage tank body 1. In addition, in the above-mentioned heat insulation board 4, the heat insulation board 4 in a cross section
It is desirable that the dimensional difference l (mm) between the two surfaces be close to the value represented by the following relational expression (1).

l (mm) = 2 * π * t / N (mm) (1) where t is the thickness (mm) of the heat insulating board 4 and N is the number of sheets required for the heat insulating board 4 to go around the storage tank main body 1 Is.

In the above configuration, when the heat insulating boards 4 ... Are provided on the side wall (outer peripheral wall) of the storage tank body 1, the divided heat insulating boards 4 ... The upper side including the upper sides 4b, 4b or both upper sides 4c, 4c is placed with the storage tank body 1 side.

Each of the heat insulating boards 4 has a top surface dimension and a trapezoidal cross section corresponding to the difference in peripheral length between the outer peripheral surface and the inner peripheral surface formed by the thickness of the heat insulating board 4 and the curvature of the side wall. The lower surface dimension including both lower sides of the relatively short dimension in is adjusted.

Therefore, as shown in FIG. 3, when the heat insulating boards 4 are arranged in an arc shape along the circumferential direction of the side wall, the adjacent heat insulating boards 4 are cut from one heat insulating board 4. It is possible to bring the contact surface into close contact with the end surface of the heat insulating board 4 adjacent to the cut surface of the other heat insulating board 4 and bring the contact surfaces into close contact with each other with high accuracy.

Thus, in the configuration of the above-described embodiment, as shown in FIG. 1, when the heat insulating boards 4 are assembled along the side wall of the storage tank body 1, the contact surfaces of the adjacent heat insulating boards 4 ... Since they can be matched without any gap, the uniform heat insulating effect of the heat insulating boards 4 having a uniform thickness can be maintained.

Further, in the above configuration, when the heat insulating boards 4 are assembled, the contact surfaces of the adjacent heat insulating boards 4 can be aligned without any gap, so that the gap formed between the heat insulating boards which has been conventionally required is formed. It is not necessary to fill or remove the above-mentioned gap to eliminate the gap.

By the way, conventionally, in order to abut the end faces of adjacent heat insulating boards without a gap, both ends of the rectangular plate-like heat insulating material are cut off obliquely to form a trapezoidal shape of the heat insulating board. There was a waste of heat insulating material.

However, in the above-described configuration, each heat insulating board 4 ... Is formed by diagonally cutting a heat insulating material having a substantially rectangular plate shape so that the cross sections thereof have a uniform trapezoidal shape, and one of the heat insulating boards is cut. 4, reverse the top, bottom, left and right,
Since the heat insulating board 4 is used in the same manner as the other heat insulating board 4, it is possible to avoid the conventional waste.

[Effect of device]

As described above, the heat insulating structure of the present invention is such that the plurality of flat heat insulating boards assembled along the outer peripheral wall of the cylindrical storage tank body have a trapezoidal shape in which the cross sections of the respective heat insulating boards are uniform. Is formed by obliquely cutting a substantially rectangular plate-shaped heat insulating material, and the surface including each short side of the trapezoidal end surfaces of the heat insulating board faces the outer peripheral wall, and one of the adjacent heat insulating boards In this configuration, the cut surface of the heat insulating board and the end surface of the other heat insulating board facing the cut surface are brought into contact with each other and assembled.

Thus, in the above configuration, when the heat insulating board is assembled along the outer peripheral wall of the storage tank main body, the contact surfaces of the flat heat insulating boards having a uniform thickness can be accurately abutted with each other without a gap. In addition, the uniform heat insulating effect of the heat insulating board can be maintained.

Moreover, in the above configuration, when the heat insulating board is assembled,
Since the abutting surfaces of the heat insulating boards can be accurately abutted against each other without any gap, the above-described gap filling work for eliminating the gap formed between the heat insulating boards is not necessary.

By the way, in the past, in order to abut the end faces of the adjacent heat insulating boards without gaps, both end face portions of the rectangular plate-like heat insulating material are cut off obliquely to make the cross section of the heat insulating board trapezoidal. There was a waste of the generation of waste heat insulating material.

However, in the above structure, each heat insulating board is formed by obliquely cutting a heat insulating material having a substantially rectangular plate shape so that the cross section thereof has a uniform trapezoidal shape, and one heat insulating board formed by cutting the heat insulating board is Since the upper and lower sides and the left and right sides are reversed to be used in the same manner as the other heat insulating board, it is possible to avoid the above-described waste of the related art, and it is possible to use the heat insulating material without waste.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a vertical sectional view of a storage tank having a heat insulating structure according to the present invention. FIG. 2 is a perspective view showing a state of the heat insulating board divided into two pieces. FIG. 3 is a side view showing a state in which the divided heat insulating boards are formed into an arc shape and the end faces are butted. 4 and 5 show a conventional example. FIG. 4 is a front view showing a state where the heat insulating board is assembled to the storage tank body. FIG. 5 is a sectional view taken along the line AA showing a part of the storage tank main body to which the heat insulating board in FIG. 4 is assembled. Reference numeral 1 is a storage tank body, 2 is a cooling pipe, 3 is glass wool, and 4 is an insulating board.

Claims (1)

[Scope of utility model registration request] 1. A heat insulating structure in which a plurality of flat heat insulating boards are assembled adjacent to each other along an outer peripheral wall of a cylindrical storage tank body, wherein each heat insulating board has a uniform cross section. A rectangular plate-shaped heat insulating material is obliquely cut so as to form a trapezoidal shape, and the surface including each short side of the trapezoidal end surfaces of the heat insulating board faces the outer peripheral wall, and the heat insulating board The heat insulating structure is characterized in that the cut surface of the other heat insulating board and the end surface of the other heat insulating board adjacent to the cut surface are brought into contact with each other and assembled.