JPH0696866B2 - Underground buried high temperature gas guide structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to underground burial such as a flue buried in the ground in the vicinity of a concrete skeleton supporting a heavy object such as a structure or a mechanical device. The present invention relates to a hot gas guide structure of a mold.

(Prior Art) Conventionally, in constructing a high temperature underground buried flue, a direct buried construction method has been adopted from a structural and economical point of view.

In this case, the flue itself is configured by using heat insulating castable (a) or other heat insulating material such as heat insulating bricks as shown in FIG. 4, so that the amount of heat radiated from the flue is minimized.

In addition, (b) in the figure is basic concrete.

(Problems to be solved by the invention) However, the conventional high-temperature underground buried flue is soil (c).
This soil serves as a kind of heat insulating material to improve the heat insulation performance, but the temperature distribution in the vicinity of the flue including the soil has a wide high temperature range and spreads to the soil area. The foundation of the existing concrete structure is always exposed to high temperature, which causes the strength of the foundation concrete to decrease.

(Means for Solving Problems) The present invention has been proposed in order to solve such problems, and is a high-temperature gas guide structure buried in the ground in the vicinity of a concrete frame, A high temperature underground buried high temperature, characterized by being provided with an air layer at an appropriate distance from the surrounding soil, and connecting an intake tube and an exhaust tube, each of which has its tip opening into the atmosphere, to the air layer. It relates to a gas guide structure.

(Operation) As described above, the underground buried high-temperature gas guide structure according to the present invention is provided with an air layer at an appropriate interval between the structure and the surrounding soil in which the structure is buried, and each of the air layers ends. Since an intake cylinder and an exhaust cylinder, whose parts open to the atmosphere, are connected, heat is not directly dissipated from the structure to the outer soil, and is temporarily captured at the position of the air layer provided outside the structure. After being discharged to the outside, the high temperature gas does not come into direct contact with the concrete structure near the structure, the temperature of the structure is constantly kept in a safe temperature range, and damage due to heat of the concrete structure is caused. To be prevented.

(Example) Hereinafter, the illustrated example in which the present invention is applied to an underground buried flue will be described.

(A) is a flue buried in the ground, which is lined with an appropriate heat insulating material (1) on its inner peripheral surface, and further has a heat insulating layer (2) made of heat insulating castable or heat insulating material, or a combination of both. ) Is installed.

Then, in the portion of the flue (A) where heat countermeasures are required, the concrete outer shell (3) is arranged outside the flue (A) at an appropriate interval concentrically therewith. An air layer (B) that partitions the flue (A) and the outer soil (4) is provided between the outer shell (3) and the outer shell (3).

Further, a supply cylinder (5) and an exhaust pipe (6) are connected to the air layer (B), and an end of the exhaust pipe (6) as well as the intake pipe (5) is open to the outside.

Since the illustrated embodiment is configured as described above, the flue (A) is heated by the hot gas passing through the flue (A).
Intake cylinder (5) whose temperature has risen due to the more dissipated heat
The air sucked into the air layer (B) via the exhaust pipe is discharged to the outside via the exhaust stack (6), so that the temperature of the concrete structure close to the flue always stays in the safe temperature range, and the heat of the structure is reduced. The strength is prevented from being reduced and the damage is prevented.

In the illustrated embodiment, the high temperature air in the air layer (B) is exhausted to the outside by natural ventilation due to the height difference between the intake pipe (5) and the exhaust pipe (6). According to the above, a fan is mounted on the intake cylinder (5) and the exhaust cylinder (6), and the high temperature air in the air layer (B) is discharged to the outside by forced ventilation to further enhance the effect. Good.

FIG. 3 shows another embodiment of the present invention, wherein the air layer (B) is
To communicate with the negative gas pressure part (C) of the flue (A) that does not require heat countermeasures, and use the negative gas pressure of the part (C) to discharge the sensible heat released to the air layer (B). It is the one.

In the figure, the same parts as those in the above embodiment are designated by the same reference numerals.

In each of the above-mentioned embodiments, the air layer (B) may be used if necessary.
Install a heat exchanger for passing air or water in the air layer (B)
The sensible heat dissipated in the air may be supplied to the outside as warm air or hot water by a heat exchanger to make the effect more remarkable.

(Effect of the Invention) As described above, the underground buried high temperature gas guiding structure according to the present invention is provided with an air layer at an appropriate interval between the structure and the surrounding soil, and the place in the air layer is in the atmosphere. By connecting an intake pipe and an exhaust pipe that open to the outside, the heat radiated from the structure to the outer soil is trapped at the position of the air layer and discharged to the outside to protect the concrete structure near the structure. To do.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment in which the present invention is applied to an underground buried type flue, FIG. 2 is a vertical sectional side view thereof, and FIG. 3 is a vertical sectional side view showing another embodiment of the present invention. FIG. 4 is a vertical sectional view of a conventional structure. (A) ... Flue, (B) ... Air layer, (3) ... Concrete shell, (4) ... Outer soil, (5) ... Intake tube, (6) ... Exhaust tube

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiko Sasai 4-6-15 Sendagaya, Shibuya-ku, Tokyo Within Fujita Industry Co., Ltd. (72) Shinichi Aoki 1-8, Kyomachibori, Nishi-ku, Osaka-shi, Osaka No. 5 within Meisei Kogyo Co., Ltd. (56) Reference Japanese Patent Laid-Open No. Sho 48-35645 (JP, A)

Claims (1)

[Claims] 1. An air layer having an appropriate space is provided between a high temperature gas guiding structure buried in the ground in the vicinity of a concrete skeleton and the surrounding soil, and each air layer has a tip portion in the atmosphere. An underground buried high-temperature gas guide structure, characterized in that an intake cylinder and an exhaust cylinder that open to the are connected to each other, and the sensible heat radiated to the air layer is sucked and discharged to the outside.