JP2023127954A - Overlapping fireproof plate structure and rocket launching facility - Google Patents

Abstract

To provide a fireproof plate structure which enables easy partial repair or replacement and is formed in consideration of the escape of steam occurring when a coolant is exposed to a combustion gas, and to provide a rocket launching pad.SOLUTION: An overlapping fireproof plate structure includes: an upper fireproof plate 22; a lower fireproof plate 42 located below the upper fireproof plate 22; and a gap formation member 30 which forms a gap formed by a predetermined space between the upper fireproof plate 22 and the lower fireproof plate 42; and inclining means which inclines the upper fireproof plate 22 and the lower fireproof plate 42 relative to a horizontal surface by a predetermined angle.SELECTED DRAWING: Figure 1

Description

FIELD OF THE INVENTION The present invention relates to fireproof plate constructions. The present invention also relates to a rocket launch facility equipped with such a fireproof structure.

In order to operate the space station effectively, a supply ship is necessary to transport personnel and supplies into space.

A rocket is required to send a supply ship into space, but a launch pad is required to launch the rocket. In addition, in recent years, rockets launched to send supply ships into space have been relaunched by landing on landing pads on land or at sea. Is required.

The launch pad has a part that is exposed to combustion gas when the rocket is launched, and the landing pad has a part that is exposed to the combustion gas from the reverse injection when the rocket lands. These parts need to be able to withstand extremely high temperatures and high-temperature gas fluids. For example, in Patent Document 1, as a deflection version structure of a rocket launch pad, a large number of ceramic lining blocks are installed by grouting on a concrete substrate. A deflection plate structure is disclosed in which the plates are coated next to each other.

Japanese Unexamined Patent Publication No. 197998/1983

High-performance rocket engines (liquid hydrogen/liquid oxygen engines), which have been under development in recent years, have higher combustion gas temperatures than conventional engines (said to reach around 3,600 degrees Celsius). There is a growing demand for fireproof plates with high performance, but the inventor believes that it is difficult to prevent fireproof plates from being damaged at all because they are exposed to combustion gases at a higher temperature than in conventional engines. We thought it would be important to configure the fireproof structure so that only parts can be easily repaired or replaced.

However, in the deflection plate structure described in Patent Document 1, the ceramic lining block is attached to the concrete base plate with grout, and it is difficult to easily repair or replace the ceramic lining block partially. .

Also, when exposed to combustion gas from a rocket engine, cooling water is applied to the fireproof plate, but the cooling water that is exposed to the combustion gas rapidly turns into water vapor, causing damage to the fireproof plate due to the sudden pressure increase. The inventor thought that there is a possibility.

The present invention has been made in view of these points, and is a fireproof plate that can be easily partially repaired or replaced, and is designed to allow water vapor generated by exposure to combustion gas to escape. The task is to provide structures and rocket launch facilities.

The present invention is an invention to solve the above-mentioned problems, and is a stacked fireproof plate structure and a rocket launch facility as described below.

That is, one aspect of the stacked fireproof plate structure according to the present invention is such that an upper fireproof plate, a lower fireproof plate located below the upper fireproof plate, and a predetermined distance between the upper fireproof plate and the lower fireproof plate are provided. This is a stacked fireproof plate structure characterized by having a gap forming member that forms a gap, and an inclination means for tilting the upper fireproof plate and the lower fireproof plate by a predetermined angle with respect to a horizontal plane.

In this application, regarding the layered fireproof plate structure and its constituent members according to the present invention and embodiments of the present invention, when interpreting words that refer to upper and lower, such as upward and downward, the upper fireproof plate is on top and the lower fireproof plate is on the bottom. As shown in FIG. The same applies to other parts of the present application.

Each part of the upper fireproof plate may be made of a material with the same composition, and each part of the lower fireproof plate may be made of a material with the same composition.

At least one of the upper fireproof plate and the lower fireproof plate may be made of a material that can be formed into a planar shape by pouring into a mold and casting.

The upper fireproof plate may have a thickness of 100 mm or more and 200 mm or less, and the predetermined distance between the gaps formed by the gap forming member may be 50 mm or more and 100 mm or less.

At least one of the upper fireproof plate and the lower fireproof plate may include a bottom steel plate attached to a lower surface.

A slip stopper may be attached to the upper surface of the bottom steel plate.

The gap forming member may be a plurality of steel sections attached to the lower surface of the upper fireproof plate and arranged at predetermined intervals in a direction parallel to the lower surface of the upper fireproof plate.

Here, "attached to the lower surface of the upper fireproof plate" refers not only to the case where it is directly attached to the lower surface of the upper fireproof plate, but also to the case where it is indirectly attached to the lower surface of the upper fireproof plate through another member. This also includes cases where it is installed. Similar statements elsewhere in this application shall be interpreted in the same manner.

Among the plurality of shaped steels constituting the gap forming member, some of the shaped steels are attached to the lower surface of the upper fireproof plate and are mutually arranged in a predetermined direction parallel to the lower surface of the upper fireproof plate. The remaining section steels are arranged at intervals, and are attached to the lower surface of the upper fireproof plate and mutually in a direction parallel to the lower face of the upper fireproof plate and in a direction different from the fixed direction. They may be arranged at predetermined intervals.

The certain direction and the direction different from the certain direction may be substantially orthogonal directions.

A slip stopper embedded inside the upper fireproof plate may be attached to the upper surface of the section steel.

The upper refractory plate is configured to be divided into a plurality of upper refractory blocks in the in-plane direction, and the upper refractory blocks that are adjacent in the in-plane direction are arranged in close contact with each other. It's okay.

Here, the "in-plane direction" with respect to the upper fireproof plate refers to the direction in which the upper fireproof plate spreads in a plane as a plate-like body, and in normal cases, it is parallel to the upper and lower surfaces of the upper fireproof plate. It is the direction. The same applies to similar descriptions in other parts of the present application.

Furthermore, "the upper fireproof blocks that are adjacent in the in-plane direction are arranged closely together" means that there is substantially no gap between the upper fireproof blocks that are adjacent in the in-plane direction. This does not mean that the physical gap is zero. Similar statements elsewhere in this application shall be interpreted in the same manner.

The lower fireproof plate is configured to be divided into a plurality of lower fireproof plate blocks in the in-plane direction, and the lower fireproof plate blocks that are adjacent to each other in the in-plane direction are arranged in close contact with each other. It's okay.

Here, the "in-plane direction" with respect to the lower fireproof plate refers to the direction in which the lower fireproof plate spreads in a plane as a plate-like body, and in normal cases, it is parallel to the upper and lower surfaces of the lower fireproof plate. It is the direction. The same applies to similar descriptions in other parts of the present application.

Furthermore, "the lower fireproof blocks that are adjacent in the in-plane direction are arranged closely together" means that there is substantially no gap between the lower fireproof blocks that are adjacent in the in-plane direction. This does not mean that the physical gap is zero. Similar statements elsewhere in this application shall be interpreted in the same manner.

A lower spacer may be provided below the lower fireproof plate.

A restraining member may be provided to restrain the position of the upper fireproof plate.

At least one of the upper refractory plate and the lower refractory plate may be formed of castable refractory material.

The size of the upper refractory plate in the in-plane direction may be smaller than the size of the lower refractory plate in the in-plane direction.

One aspect of the rocket launch facility according to the present invention is a rocket launch facility characterized by comprising the layered fireproof plate structure.

According to the present invention, there is provided a fireproof structure and a rocket launch facility that can be easily partially repaired or replaced and are designed to allow water vapor generated by exposure to combustion gas to escape. be able to.

A vertical cross-sectional view of the layered fireproof plate structure 10 of the layered fireproof plate structure 8 according to the embodiment of the present invention (cross-sectional view taken along line II in FIG. 2) A plan view of the stacked fireproof plate structure 10 seen from above. Enlarged vertical sectional view of part III in Figure 1 A plan view of the can body 24 seen from above. Side view of can body 24 seen from the side A vertical cross-sectional view schematically showing a situation in which a stacked fireproof plate structure 10 is installed as a flue deflector in a rocket launch facility 100.

Embodiments of the present invention will be described in detail below with reference to the drawings. In this explanation, the case where the stacked fireproof plate structure 8 according to the embodiment of the present invention is used as a deflection plate for a flue of a rocket launch facility 100 and its inclination means will be explained. The application of the layered fireproof plate structure is not limited to rocket launch facilities.

(1) Configuration and effect of the layered fireproof plate structure according to the embodiment of the present invention FIG. 2 is a plan view of the stacked fireproof plate structure 10 seen from above, and FIG. 3 is an enlarged vertical sectional view of section III in FIG. 4 is a plan view of the can body 24 viewed from above, FIG. 5 is a side view of the can body 24 viewed from the side, and FIG. 6 is a plan view of the can body 24 viewed from the side. FIG. 2 is a vertical sectional view schematically showing a situation in which it is installed as a road deflector. For convenience of illustration, only the upper fireproof plate structure 20 is shown in FIG. 2, and the lower fireproof plate structure 40 is not reflected.

A stacked fireproof plate structure 8 according to an embodiment of the present invention includes a stacked fireproof plate structure 10 and an inclination means for tilting the stacked fireproof plate structure 10 by a predetermined angle with respect to a horizontal plane. Since the characteristic component of the layered fireproof plate structure 8 according to the embodiment is the layered fireproof plate structure 10, the layered fireproof plate structure 10 will be mainly described below.

The stacked fireproof plate structure 10 includes an upper fireproof plate structure 20, an inter-plate spacer 30, a lower fireproof plate structure 40, and a lower spacer 50, and the upper fireproof plate structure 20 is combined with the lower fireproof plate structure. It has a two-stage fireproof plate structure in which the section 40 is supported from below via the inter-plate spacer 30. As schematically shown in FIG. 6, when the stacked fireproof plate structure 10 according to the present embodiment is installed in the flue 104 of the rocket launch facility 100 and used as a flue deflector, The stacked fireproof plate structure 10 is installed at a predetermined angle with respect to the rocket 102, and is exposed to combustion gas 106 when the rocket 102 is launched. When using the stacked fireproof plate structure 10 as a flue deflection plate of the rocket launch facility 100, the angle with respect to the horizontal plane at which the stacked fireproof plate structure 10 is installed may be determined as appropriate depending on the conditions of use, etc., but it is standard. shall be installed at an angle of 30° or more and 70° or less with respect to the horizontal plane.

When installing the stacked fireproof plate structure 10 at a predetermined angle with respect to the horizontal plane in the rocket launch facility 100, specifically, as shown in FIG. It is placed on a wall so as to be inclined at a predetermined angle with respect to the horizontal plane, and its position is fixed using a fixing jig (not shown) as necessary. In this case, the floor and wall surfaces of the flue 104 serve as tilting means for tilting the stacked fireproof plate structure 10 at a predetermined angle with respect to the horizontal plane. In other words, the floor and wall surfaces of the flue 104 serve as inclination means for tilting the fireproof plate 22 of the upper fireproof plate structure 20 and the fireproof plate 42 of the lower fireproof plate structure 40 by a predetermined angle with respect to the horizontal plane.

The upper fireproof plate structure 20 includes a fireproof plate 22 and a can body 24. The fireproof plate 22 is provided inside the can body 24, and the fireproof plate 22 is integrated with the can body 24. , the lower fireproof plate structure 40 includes a fireproof plate 42 and a can body 44, the fireproof plate 42 is provided inside the can body 44, and the fireproof plate 42 is integrated with the can body 44. There is. In the stacked fireproof plate structure 10 according to the embodiment of the present invention, the upper fireproof plate structure 20 and the lower fireproof plate structure 40 differ only in the vertical arrangement relationship in that the former is located in the upper stage and the latter is located in the lower stage. The configuration of each is the same. Specifically, the fireproof plates 22 of the upper fireproof plate structure 20 and the fireproof plates 42 of the lower fireproof plate structure 40 are the same, and the can body 24 (bottom steel plate 24A, side plate steel plate 24B) of the upper fireproof plate structure 20 , anti-slip 24C) and the can body 44 (bottom steel plate 44A, side steel plate 44B, anti-slip 44C) of the lower fireproof plate structure 40 are the same. Therefore, the explanation of each constituent member of the lower fireproof plate structure 40 will be replaced with the explanation of the corresponding constituent member of the upper fireproof plate structure 20, and as a general rule, the explanation of each constituent member of the lower fireproof plate structure 40 will be abbreviated as .

The fireproof plate 22 of the upper fireproof plate structure 20 has the role of receiving the combustion gas 106 when the rocket 102 is launched and flowing the combustion gas 106 in a predetermined direction (in the direction of the flue 104). Therefore, the fireproof version 22 is required not only to have excellent fireproof performance but also to have mechanical properties that can withstand the pressure of the combustion gas 106 when the rocket 102 is launched.

The material of the fireproof plates 22 and 42 is not particularly limited as long as it can exhibit the necessary fireproof performance and mechanical performance, and specifically, for example, depending on the necessary fireproof performance and mechanical performance, etc. Alumina, magnesia, chromium oxide, zirconia, etc. can be used for the fireproof plates 22, 42. The fireproof plates 22, 42 are made of castable refractories (fireproof A mixture of alumina cement and lightweight aggregate with a large size can be suitably used.

The fireproof plates 22, 42 are made of a single material. A single material here means that each part of the fireproof plates 22, 42 is made of a material with the same composition, and does not exclude materials made by mixing multiple types of fireproof materials. do not have. Since the fireproof plates 22 and 42 are made of a single material, repairs when damaged can be easily performed using the single material, and there is no need to use multiple materials or members. can be done. For example, when the fireproof plates 22 and 42 are formed of castable refractories, damaged parts (for example, parts scraped off by the combustion gas 106 when the rocket 102 was launched) may be repaired with the castable refractories. Repairs using castable refractories can be performed by packing castable refractories into damaged areas (such as scraped areas) and filling the scraped areas with castable refractories. In addition, if safety can be confirmed, it is also possible to repair with a fireproof material different from the fireproof material used when initially forming the fireproof plates 22, 42.

The thickness of the fireproof plates 22 and 42 is typically about 100 to 200 mm from the viewpoint of safely receiving the combustion gas 106 when the rocket 102 is launched. Further, from the viewpoint of ease of handling and ease of manufacture, the size of the fireproof plates 22, 42 in the in-plane direction is typically about 800 to 3000 mm.

In the stacked fireproof plate structure 10 according to the present embodiment, the fireproof plate 22 is formed by pouring castable refractories into the can body 24, and the fireproof plate 42 is formed by pouring castable refractories into the can body 44. It is formed by pouring something into place.

As shown in FIGS. 4 and 5, the can body 24 includes a bottom steel plate 24A, a side steel plate 24B, and a slip stopper 24C. Side steel plates 24B are provided upright at four sides of the in-plane end of the rectangular bottom steel plate 24A, and the height of the side steel plates 24B is approximately the same as the thickness of the fireproof plate 22. The overall shape of the can body 24 is a flat box-like body with an open top.

The bottom steel plate 24A is a rectangular steel plate connected to the lower surface of the fireproof plate 22, reinforcing the fireproof plate 22, and forming a part of the fireproof plate 22. The thickness of the bottom steel plate 24A is approximately 3 to 12 mm. When the layered fireproof plate structure 10 according to this embodiment is used as a deflection plate of a launch pad for a rocket 102, water is sprayed to deal with the combustion gas 106 at the time of launch, so a bottom plate is used to provide an escape route for water and steam. Through holes 24X each having a diameter of about 20 mm are provided in the steel plate 24A at predetermined intervals. The through holes 24X are typically provided at a pitch of about 100 to 200 mm. When providing the through holes 24X in the bottom steel plate 24A, the size, pitch, and shape of the through holes 24X may be appropriately set depending on the conditions under which the stacked fireproof plate structure 10 is used.

The side steel plate 24B is a steel plate that is provided upright at the four sides of the in-plane end of the rectangular bottom steel plate 24A, and restrains the position of the fireproof plate 22 in the in-plane direction. The thickness of the side steel plate 24B is about 3 to 12 mm, similar to the bottom steel plate 24A. The height of the side steel plate 24B is approximately the same as the thickness of the fireproof plate 22, and is approximately 100 to 200 mm. In the lower part of the side steel plate 24B, through holes 24Y are provided at a pitch of about 100 to 200 mm to provide an escape route for water and steam. The size, pitch, and shape of the through holes 24Y may be appropriately set depending on the conditions under which the stacked fireproof plate structure 10 is used.

Note that it is not essential to provide the through holes 24X in the bottom steel plate 24A and the through holes 24Y in the side steel plates 24B, and may not be provided depending on the conditions of using the stacked fireproof plate structure 10. In addition, when forming the fireproof version 22 with a castable refractory, the bottom plate steel plate 24A and the side plate steel plate 24B can also be used as a formwork.

In addition, by attaching the anti-slip 24C to the upper surface of the bottom steel plate 24A and embedding the anti-slip 24C inside the fireproof plate 22, the degree of integration between the fireproof plate 22 and the bottom steel plate 24A is improved. The load-bearing capacity of the fireproof version 22 can be improved. In this case, it is possible to obtain the necessary load-bearing capacity even if the thickness of the fireproof plate 22 is reduced to a certain degree.

Specifically, for example, a deformed reinforcing bar, a headed stud, or the like can be used as the anti-slip member 24C. In the stacked fireproof plate structure 10 according to this embodiment, a deformed reinforcing bar with a diameter of 16 mm bent at a bending angle of 45 degrees is used as the slip stopper 24C. The type, shape, arrangement pitch, etc. of the anti-slip 24C may be appropriately set depending on the conditions under which the stacked fireproof plate structure 10 is used.

As mentioned above, the in-plane size of the fireproof plate 22 is typically about 800 to 3000 mm, so when used as a flue deflector for the rocket launch facility 100, it is usually The fireproof plates 22 are used by closely arranging them in the in-plane direction without any gaps. Furthermore, as mentioned above, since the fireproof plates 22 are made of a single material, they can be easily repaired when damaged, but multiple fireproof plates 22 can be placed closely together in the in-plane direction without any gaps. In the case where the fireproof plate 22 is arranged and used, it is possible to deal with the damage by replacing the fireproof plate 22 that has a large degree of damage rather than repairing it.

The inter-plate spacer 30 is arranged between the upper fireproof plate structure 20 and the lower fireproof plate structure 40, and creates a gap of a predetermined distance between the upper fireproof plate structure 20 and the lower fireproof plate structure 40. It has the role of forming an escape route for water and steam. Therefore, it can be said that the interprint spacer 30 is a gap forming member. In order to allow a sufficient amount of water and water vapor to pass between the upper fireproof plate structure 20 and the lower fireproof plate structure 40, the space between the upper fireproof plate structure 20 and the lower fireproof plate structure 40 is The standard size of the gap is approximately 50 to 100 mm. Therefore, the vertical height of the interprint spacer 30 is typically about 50 to 100 mm. In addition, by providing the above-mentioned gap between the upper fireproof plate structure 20 and the lower fireproof plate structure 40 by the inter-plate spacer 30, it is possible to prevent the fireproof plate 22 of the upper fireproof plate structure 20 from being damaged. Replacement work becomes easier.

As the inter-plate spacer 30, a shaped steel having a height of about 50 to 100 mm is usually used, and specifically, for example, an L-shaped steel or a channel steel having a height of about 50 to 100 mm is used. In the stacked fireproof plate structure 10 according to this embodiment, as shown in FIGS. 1 to 5, L-shaped steel is used as the inter-plate spacer 30, and the flange 30B of the inter-plate spacer 30 (L-shaped steel) is connected to the bottom plate. It is attached to the lower surface of the steel plate 24A by welding.

One inter-plate spacer 30 is disposed at the center of the fire-resistant plate 22 in the short side direction, in contact with one side of the fire-resistant plate 22 (the lower surface of the bottom steel plate 24A). Three of them are arranged at a predetermined interval from each other in the long side direction, and as described above, have the role of creating an escape route for cooling water and water vapor below the fireproof plate 22 of the upper fireproof plate structure 20. There is. A through hole 30X is provided in the web 30A of the inter-plate spacer 30 (L-shaped steel) to ensure an escape route for cooling water and water vapor. Further, as shown in FIGS. 2 and 4, the one inter-plate spacer 30 and the three inter-plate spacers 30 are substantially perpendicular to each other.

Further, as described above, the flange 30B of the inter-plate spacer 30 (L-shaped steel) is attached to the lower surface of the bottom steel plate 24A by welding, and the inter-plate spacer 30 reinforces the bottom steel plate 24A. By reinforcing 24A, the entire fireproof plate 22 is reinforced. In this embodiment, the inter-plate spacer 30 is arranged below the portion of the bottom steel plate 24A to which the anti-slip 24C is attached, and the degree of integration between the fireproof plate 22 and the inter-plate spacer 30 is improved, and the inter-plate spacer 30 is The reinforcing effect of the spacer 30 is further improved.

Since the upper fireproof plate structure 20 is simply placed on the lower fireproof plate structure 40 via the inter-plate spacer 30, in order to prevent the upper fireproof plate structure 20 from shifting its position, , a cable (wire rope) not shown is attached to the through hole 30X of the web 30A of the inter-plate spacer 30, and this cable (wire rope) is fixed to an external fixed object, so that the entire upper fireproof plate structure 20 is assembled. The position of may be restricted.

The lower fireproof plate structure 40 has a role of supporting the upper fireproof plate structure 20 from below, and has the rigidity to support the upper fireproof plate structure 20 from below. In this embodiment, as described above, in the stacked fireproof plate structure 10 according to the embodiment of the present invention, the upper fireproof plate structure part 20 and the lower fireproof plate structure part 40 are located in the upper stage and the latter in the lower stage. The only difference is in the vertical arrangement, but the configurations themselves are the same.

In the stacked fireproof plate structure 10 according to the embodiment of the present invention, the lower fireproof plate structure 40 is disposed below the upper fireproof plate structure 20, and it has a two-layer structure of fireproof plates 22, 42. Even if the upper fireproof plate structure 20 is damaged by the combustion gas 106 when the rocket 102 is launched, the lower fireproof plate structure 40 can catch the combustion gas 106 when the rocket 102 is launched, ensuring safety. It has a high structure.

The lower spacer 50 is disposed below the lower fireproof plate structure 40 and is attached to the bottom steel plate 44A of the lower fireproof plate structure 40 by welding. The lower spacer 50 is made of the same shaped steel (L-shaped steel) as the inter-plate spacer 30, and is attached to the bottom steel plate 44A in the same position, and the web is provided with a through hole 50X. However, unlike the inter-plate spacer 30, the lower spacer 50 has the role of providing a gap between the upper fireproof plate structure 20 and the lower fireproof plate structure 40 to create an escape route for cooling water and water vapor. Therefore, depending on the conditions under which the layered fireproof plate structure 10 is used, it may be omitted.

(2) Application of the stacked fireproof plate structure 10 to the rocket launch facility 100 As described above, the stacked fireproof plate structure 10 according to the embodiment of the present invention has the upper fireproof plate structure 20 on top of the lower fireproof plate structure 40. The structure has a two-tiered fireproof plate structure in which the fireproof plate 22 and the fireproof plate 42 are placed, and an escape route for cooling water and water vapor is provided between the fireproof plate 22 and the fireproof plate 42. It has a fireproof structure that takes into account the release of water vapor generated by the fire, and has excellent fireproof performance. In addition, since the stacked fireproof plate structure 10 has a two-layer structure of the fireproof plates 22 and 42, even if the upper fireproof plate structure 20 is damaged by the combustion gas 106 when the rocket 102 is launched, the lower fireproof plate structure 10 The plate structure portion 40 can catch the combustion gas 106 when the rocket 102 is launched, resulting in a highly safe structure.

Therefore, the stacked fireproof plate structure 10 according to the embodiment of the present invention can be suitably used as a flue deflection plate of the rocket launch facility 100.

Note that when the stacked fireproof plate structure 10 is used as a deflection plate for a flue in the rocket launch facility 100, the area directly exposed to the combustion gas 106 can be predicted almost accurately, so only the area directly exposed to the combustion gas 106 is used. Depending on the conditions of use, it is also possible to use the two-layered fireproof plate structure 10 and use only the lower fireproof plate structure 40 without using the upper fireproof plate structure 20 in other areas. It is.

(3) Supplementary information In the stacked fireproof plate structure 10 according to the embodiment of the present invention, the upper fireproof plate structure part 20 and the lower fireproof plate structure part 40 are arranged vertically such that the former is located in the upper stage and the latter is located in the lower stage. Although the configurations themselves are the same except for the relationship, the configurations may be changed as appropriate depending on the conditions of use and the like. Specifically, for example, the fireproof plates 22 and 42 may have different thicknesses and materials, the bottom steel plates 24A and 44A and the side steel plates 24B and 44B may have different thicknesses, and the anti-slip plates 24C and 44C may have different thicknesses. The shape etc. may be different. Further, the types and dimensions of the steel sections used for the inter-plate spacer 30 and the lower spacer 50 may be different. Furthermore, as described above, the lower spacer 50 may be omitted depending on the conditions of use.

Further, depending on the usage conditions of the overlapped fireproof plate structure 10, the can body 24 of the upper fireproof plate structure 20 and the can body 44 of the lower fireproof plate structure 40 may be omitted. Alternatively, the upper fireproof plate structure 20 may be composed of only the fireproof plate 22, and the lower fireproof plate structure 40 may be composed only of the fireproof plate 42. Further, depending on the usage conditions of the stacked fireproof plate structure 10, only some of the members (bottom steel plate 24A, side steel plate 24B, anti-slip 24C) constituting the can body 24 may be omitted, or the can body 44 may be omitted. You may omit only a part of the members (bottom plate steel plate 44A, side plate steel plate 44B, and anti-slip member 44C).

8...Layered fireproof plate structure 10...Layered fireproof plate structure 20...Upper fireproof plate structure 22, 42...Fireproof plate 24, 44...Can body 24A, 44A...Bottom plate steel plate 24B, 44B...Side plate steel plate 24C, 44C...Slip prevention 24 X, 24 Y, 30

The present invention relates to a fireproof plate structure. The present invention also relates to a rocket launch facility equipped with such a fireproof plate structure.

In order to operate the space station effectively, a supply ship is necessary to transport personnel and supplies into space.

A rocket is required to send a supply ship into space, but a launch pad is required to launch the rocket. In addition, in recent years, rockets launched to send supply ships into space have been relaunched by landing on landing pads on land or at sea. Is required.

The launch pad has a part that is exposed to combustion gas when the rocket is launched, and the landing pad has a part that is exposed to the combustion gas from the reverse injection when the rocket lands. These parts need to be able to withstand extremely high temperatures and high-temperature gas fluids. For example, in Patent Document 1, as a deflection plate structure for a rocket launch pad, a large number of ceramic lining blocks are installed by grouting on a concrete substrate. A deflection plate structure is disclosed in which the polarizers are covered and laid next to each other.

Japanese Unexamined Patent Publication No. 197998/1983

High-performance rocket engines (liquid hydrogen/liquid oxygen engines), which have been under development in recent years, have higher combustion gas temperatures than conventional engines (said to reach around 3,600 degrees Celsius). There is a growing demand for high-performance fireproof plates , but the inventor believed that it would be difficult to prevent fireproof plates from being damaged at all because they are exposed to combustion gas at a higher temperature than in conventional engines, and therefore We thought it would be important to configure the fireproof plate structure so that only parts can be easily repaired or replaced.

However, in the deflection plate structure described in Patent Document 1, the ceramic lining block is attached to the concrete substrate with grout, and it is difficult to easily repair or replace the ceramic lining block in parts. .

Also, when exposed to combustion gas from a rocket engine, cooling water is applied to the fireproof plate , but the cooling water that is exposed to the combustion gas rapidly turns into water vapor, causing damage to the fireproof plate due to the sudden pressure increase. The inventor thought that there is a possibility.

The present invention has been made in view of these points, and provides a fireproof board that can be easily partially repaired or replaced, and is designed to allow water vapor generated by exposure to combustion gas to escape. The task is to provide structures and rocket launch facilities.

The present invention is an invention to solve the above-mentioned problems, and is a stacked fireproof plate structure and a rocket launch facility as described below.

That is, one aspect of the stacked fireproof plate structure according to the present invention is such that an upper fireproof plate , a lower fireproof plate located below the upper fireproof plate , and a predetermined distance between the upper fireproof plate and the lower fireproof plate are provided. This is a stacked fireproof plate structure characterized by having a gap forming member that forms a gap, and an inclination means that tilts the upper fireproof plate and the lower fireproof plate by a predetermined angle with respect to a horizontal plane.

In this application, regarding the laminated fireproof plate structure and its constituent members according to the present invention and embodiments of the present invention, when interpreting words that refer to upper and lower, such as upward and downward, the upper fireproof plate is on the top and the lower fireproof plate is on the bottom. As shown in FIG . The same applies to other parts of the present application.

Each part of the upper fireproof board may be made of a material with the same composition, and each part of the lower fireproof board may be made of a material with the same composition.

At least one of the upper fireproof plate and the lower fireproof plate may be made of a material that can be formed into a flat plate by pouring into a mold and casting.

The upper fireproof plate may have a thickness of 100 mm or more and 200 mm or less, and the predetermined distance between the gaps formed by the gap forming member may be 50 mm or more and 100 mm or less.

At least one of the upper fireproof plate and the lower fireproof plate may include a bottom steel plate attached to a lower surface.

A slip stopper may be attached to the upper surface of the bottom steel plate.

The gap forming member may be a plurality of shaped steels attached to the lower surface of the upper fireproof plate and arranged at predetermined intervals in a direction parallel to the lower face of the upper fireproof plate .

Here, "attached to the lower surface of the upper fireproof plate " refers not only to the case where it is directly attached to the lower surface of the upper fireproof plate , but also to the case where it is indirectly attached to the lower surface of the upper fireproof plate through another member. This also includes cases where it is installed. Similar statements elsewhere in this application shall be interpreted in the same manner.

Among the plurality of shaped steels constituting the gap forming member, some of the shaped steels are attached to the lower surface of the upper fireproof plate and are aligned with each other in a predetermined direction parallel to the lower face of the upper fireproof plate . The remaining section steels are arranged at intervals, and are attached to the lower surface of the upper fireproof plate and mutually in a direction parallel to the lower face of the upper fireproof plate and in a direction different from the fixed direction. They may be arranged at predetermined intervals.

The certain direction and the direction different from the certain direction may be substantially orthogonal directions.

A slip stopper embedded inside the upper fireproof plate may be attached to the upper surface of the shaped steel.

The upper refractory plate is configured to be divided into a plurality of upper refractory plate blocks in the in-plane direction, and the upper refractory plate blocks that are adjacent in the in-plane direction are arranged in close contact with each other. It's okay.

Here, the "in-plane direction" with respect to the upper fireproof plate refers to the direction in which the upper fireproof plate spreads in plane as a plate , and in normal cases, it is parallel to the upper and lower surfaces of the upper fireproof plate . It is the direction. The same applies to similar descriptions in other parts of the present application.

Furthermore, "the upper refractory board blocks that are adjacent in the in-plane direction are arranged closely together" means that there is substantially no gap between the upper refractory board blocks that are adjacent in the in-plane direction. This does not mean that the physical gap is zero. Similar statements elsewhere in this application shall be interpreted in the same manner.

The lower refractory plate is configured to be divided into a plurality of lower refractory plate blocks in the in-plane direction, and the lower refractory plate blocks that are adjacent in the in-plane direction are arranged in close contact with each other. It's okay.

Here, the "in-plane direction" with respect to the lower fireproof plate refers to the direction in which the lower fireproof plate spreads in a plane as a plate -like body, and in normal cases, it is parallel to the upper and lower surfaces of the lower fireproof plate . It is the direction. The same applies to similar descriptions in other parts of the present application.

Furthermore, "the lower refractory board blocks that are adjacent in the in-plane direction are arranged closely together" means that there is substantially no gap between the lower refractory board blocks that are adjacent in the in-plane direction. This does not mean that the physical gap is zero. Similar statements elsewhere in this application shall be interpreted in the same manner.

A lower spacer may be provided below the lower fireproof plate .

A restraining member may be provided to restrain the position of the upper fireproof plate .

At least one of the upper fireproof plate and the lower fireproof plate may be formed of castable refractory material.

The size of the upper fireproof plate in the in-plane direction may be smaller than the size of the lower fireproof plate in the in-plane direction.

One aspect of the rocket launch facility according to the present invention is a rocket launch facility characterized by comprising the stacked fireproof plate structure.

According to the present invention, there is provided a fireproof plate structure and a rocket launch facility that can be easily partially repaired or replaced and are designed to allow water vapor generated by exposure to combustion gas to escape. be able to.

A vertical cross-sectional view of the stacked fireproof plate structure 10 of the stacked fireproof plate structure 8 according to the embodiment of the present invention (cross-sectional view taken along line II in FIG. 2) A plan view of the stacked fireproof board structure 10 seen from above Enlarged vertical sectional view of part III in Figure 1 A plan view of the can body 24 seen from above. Side view of can body 24 seen from the side A vertical sectional view schematically showing a situation in which the stacked fireproof plate structure 10 is installed as a deflection plate for a flue in a rocket launch facility 100.

Embodiments of the present invention will be described in detail below with reference to the drawings. In this explanation, the stacked fireproof plate structure 8 according to the embodiment of the present invention will be explained keeping in mind the case where it is used as a deflection plate for a flue of a rocket launch facility 100 and its inclination means. The application of the laminated fireproof plate structure is not limited to rocket launch facilities.

(1) Configuration and effects of the stacked fireproof plate structure according to the embodiment of the present invention FIG. 2 is a plan view of the stacked refractory plate structure 10 seen from above, and FIG. 3 is an enlarged vertical sectional view of section III in FIG. 4 is a plan view of the can body 24 viewed from above, FIG. 5 is a side view of the can body 24 viewed from the side, and FIG. 6 is a plan view of the can body 24 viewed from the side. FIG. 2 is a vertical cross-sectional view schematically showing a situation in which it is installed as a road deflector . For convenience of illustration, only the upper fireproof plate structure 20 is shown in FIG. 2, and the lower fireproof plate structure 40 is not reflected.

A stacked fireproof plate structure 8 according to an embodiment of the present invention includes a stacked fireproof plate structure 10 and an inclination means for tilting the stacked fireproof plate structure 10 by a predetermined angle with respect to a horizontal plane. Since the characteristic component of the stacked fireproof plate structure 8 according to the embodiment is the stacked fireproof plate structure 10, the stacked fireproof plate structure 10 will be mainly described below.

The stacked fireproof plate structure 10 includes an upper fireproof plate structure 20, an inter-plate spacer 30, a lower fireproof plate structure 40, and a lower spacer 50, and the upper fireproof plate structure 20 is combined with the lower fireproof plate structure. It has a two-stage fireproof plate structure in which the section 40 is supported from below via the inter-plate spacer 30. As schematically shown in FIG. 6, when the stacked fireproof plate structure 10 according to the present embodiment is installed in the flue 104 of the rocket launch facility 100 and used as a flue deflection plate , The stacked fireproof plate structure 10 is installed at a predetermined angle with respect to the rocket 102, and is exposed to combustion gas 106 when the rocket 102 is launched. When using the stacked refractory plate structure 10 as a flue deflection plate for the rocket launch facility 100, the angle at which the stacked refractory plate structure 10 is installed with respect to the horizontal plane may be determined as appropriate depending on the usage conditions, etc. shall be installed at an angle of 30° or more and 70° or less with respect to the horizontal plane.

When installing the stacked fireproof plate structure 10 at a predetermined angle with respect to the horizontal plane in the rocket launch facility 100, specifically , as shown in FIG. It is placed on a wall so as to be inclined at a predetermined angle with respect to the horizontal plane, and its position is fixed using a fixing jig (not shown) as necessary. In this case, the floor and wall surfaces of the flue 104 serve as inclination means for inclining the stacked fireproof board structure 10 by a predetermined angle with respect to the horizontal plane. In other words, the floor and wall surfaces of the flue 104 serve as inclination means for tilting the fireproof plate 22 of the upper fireproof plate structure 20 and the fireproof plate 42 of the lower fireproof plate structure 40 by a predetermined angle with respect to a horizontal plane.

The upper fireproof plate structure 20 includes a fireproof plate 22 and a can body 24. The fireproof plate 22 is provided inside the can body 24, and the fireproof plate 22 is integrated with the can body 24. , the lower fireproof plate structure 40 has a fireproof plate 42 and a can body 44, the fireproof plate 42 is provided inside the can body 44, and the fireproof plate 42 is integrated with the can body 44. There is. In the stacked fireproof plate structure 10 according to the embodiment of the present invention, the upper fireproof plate structure 20 and the lower fireproof plate structure 40 differ only in the vertical arrangement relationship in that the former is located in the upper stage and the latter is located in the lower stage. The configuration of each is the same. Specifically, the fireproof plate 22 of the upper fireproof plate structure 20 and the fireproof plate 42 of the lower fireproof plate structure 40 are the same, and the can body 24 (bottom plate steel plate 24A, side plate steel plate 24B) of the upper fireproof plate structure 20 is the same. , anti-slip 24C) and the can 44 (bottom steel plate 44A, side steel plate 44B, anti-slip 44C) of the lower fireproof plate structure 40 are the same. Therefore, the explanation of each constituent member of the lower fireproof plate structure 40 will be replaced with the explanation of the corresponding constituent member of the upper fireproof plate structure 20, and as a general rule, the explanation of each constituent member of the lower fireproof plate structure 40 will be abbreviated as .

The fireproof plate 22 of the upper fireproof plate structure 20 has the role of receiving the combustion gas 106 when the rocket 102 is launched and flowing the combustion gas 106 in a predetermined direction (in the direction of the flue 104). Therefore, the fireproof plate 22 is required not only to have excellent fireproof performance but also to have mechanical properties that can withstand the pressure of the combustion gas 106 when the rocket 102 is launched.

The material of the fireproof plates 22, 42 is not particularly limited as long as it can exhibit the necessary fireproof performance and mechanical performance, and specifically, for example, depending on the necessary fireproof performance and mechanical performance, etc. Alumina, magnesia, chromium oxide, zirconia, etc. can be used for the fireproof plates 22, 42. Castable refractories (fire - resistant A mixture of alumina cement and lightweight aggregate with a large size can be suitably used.

The fireproof plates 22, 42 are made of a single material. The term "single material" here means that each part of the fireproof plates 22, 42 is made of a material with the same composition, and does not exclude materials made by mixing multiple types of fireproof materials. do not have. Since the fireproof plates 22 and 42 are made of a single material, repairs when damaged can be easily performed using the single material, and there is no need to use multiple materials or members. can be done. For example, when the fireproof plates 22 and 42 are formed of castable refractories, damaged parts (for example, parts scraped off by the combustion gas 106 when the rocket 102 was launched) may be repaired with the castable refractories. Repairs using castable refractories can be performed by packing castable refractories into damaged areas (such as scraped areas) and filling the scraped areas with castable refractories. Note that if safety can be confirmed, it is also possible to repair with a fireproof material different from the fireproof material used when initially forming the fireproof plates 22, 42.

The thickness of the fireproof plates 22 and 42 is typically about 100 to 200 mm from the viewpoint of safely receiving the combustion gas 106 when the rocket 102 is launched. Further, from the viewpoint of ease of handling and ease of manufacture, the size of the fireproof plates 22, 42 in the in-plane direction is typically about 800 to 3000 mm.

In the stacked fireproof plate structure 10 according to the present embodiment, the fireproof plate 22 is formed by casting a castable refractory in the can body 24, and the fireproof plate 42 is formed by casting a castable refractory in the can body 44. It is formed by pouring something into place.

As shown in FIGS. 4 and 5, the can body 24 includes a bottom steel plate 24A, a side steel plate 24B, and a slip stopper 24C. Side steel plates 24B are provided upright at the four sides of the in-plane end of the rectangular bottom steel plate 24A, and the height of the side steel plates 24B is approximately the same as the thickness of the fireproof plate 22. The overall shape of the can body 24 is a flat box-like body with an open top.

The bottom steel plate 24A is a rectangular steel plate connected to the lower surface of the fireproof plate 22, reinforcing the fireproof plate 22, and forming a part of the fireproof plate 22. The thickness of the bottom steel plate 24A is approximately 3 to 12 mm. When the layered fireproof plate structure 10 according to the present embodiment is used as a deflection plate of a launch pad for a rocket 102, water is sprayed to deal with the combustion gas 106 during launch, so the bottom plate is used to provide an escape route for water and steam. Through holes 24X each having a diameter of about 20 mm are provided in the steel plate 24A at predetermined intervals. The through holes 24X are typically provided at a pitch of about 100 to 200 mm. When providing the through holes 24X in the bottom steel plate 24A, the size, pitch, and shape of the through holes 24X may be appropriately set depending on the conditions under which the stacked fireproof plate structure 10 is used.

The side steel plates 24B are steel plates that are provided upright at the four sides of the ends in the in-plane direction of the rectangular bottom steel plate 24A, and restrict the position of the fireproof plate 22 in the in-plane direction. The thickness of the side steel plate 24B is about 3 to 12 mm, similar to the bottom steel plate 24A. The height of the side steel plate 24B is approximately the same as the thickness of the fireproof plate 22, and is approximately 100 to 200 mm. In the lower part of the side steel plate 24B, through holes 24Y are provided at a pitch of about 100 to 200 mm to provide an escape route for water and steam. The size, pitch, and shape of the through holes 24Y may be appropriately set depending on the conditions under which the stacked fireproof plate structure 10 is used.

Note that it is not essential to provide the through holes 24X in the bottom steel plate 24A and the through holes 24Y in the side steel plates 24B, and may not be provided depending on the conditions in which the stacked fireproof plate structure 10 is used. In addition, when forming the fireproof plate 22 with a castable refractory, the bottom plate steel plate 24A and the side plate steel plate 24B can also be used as a formwork.

In addition, by attaching the anti-slip 24C to the upper surface of the bottom steel plate 24A and embedding the anti-slip 24C inside the fireproof plate 22, the degree of integration between the fireproof plate 22 and the bottom steel plate 24A is improved. The load-bearing capacity of the fireproof plate 22 can be improved. In this case, it is possible to obtain the necessary load-bearing capacity even if the thickness of the fireproof plate 22 is reduced to a certain degree.

Specifically, for example, a deformed reinforcing bar, a headed stud, or the like can be used as the anti-slip member 24C. In the stacked fireproof board structure 10 according to the present embodiment, a deformed reinforcing bar with a diameter of 16 mm is bent at a bending angle of 45°, and is used as the slip stopper 24C. The type, shape, arrangement pitch, etc. of the anti-slip member 24C may be appropriately set depending on the conditions under which the stacked fireproof plate structure 10 is used.

As mentioned above, the in-plane size of the fireproof plate 22 is typically about 800 to 3000 mm, so when used as a flue deflection plate for the rocket launch facility 100, it is usually The fireproof plates 22 are used by closely arranging them in the in-plane direction without any gaps. Furthermore, as mentioned above, since the fireproof plates 22 are made of a single material, they can be easily repaired when damaged, but multiple fireproof plates 22 can be closely spaced in the in-plane direction without any gaps. When the fireproof plate 22 is arranged and used, it is possible to deal with the damage by replacing the fireproof plate 22 that is severely damaged rather than repairing it.

The plate spacer 30 is arranged between the upper fireproof plate structure 20 and the lower fireproof plate structure 40, and creates a gap of a predetermined distance between the upper fireproof plate structure 20 and the lower fireproof plate structure 40. It has the role of forming an escape route for water and steam. Therefore, it can be said that the inter-plate spacer 30 is a gap forming member. In order to allow a sufficient amount of water and water vapor to pass between the upper fireproof plate structure 20 and the lower fireproof plate structure 40, the gap between the upper fireproof plate structure 20 and the lower fireproof plate structure 40 is The standard size of the gap is approximately 50 to 100 mm. Therefore, the height of the inter-plate spacer 30 in the vertical direction is typically about 50 to 100 mm. In addition, by providing the above-mentioned gap between the upper fireproof plate structure 20 and the lower fireproof plate structure 40 by the plate spacer 30, it is possible to prevent the fireproof plate 22 of the upper fireproof plate structure 20 from being damaged. Replacement work becomes easier.

As the inter-plate spacer 30, a shaped steel having a height of about 50 to 100 mm is usually used, and specifically, for example, an L-shaped steel or a channel steel having a height of about 50 to 100 mm is used. In the stacked fireproof plate structure 10 according to this embodiment, as shown in FIGS. 1 to 5, L-shaped steel is used as the inter-plate spacer 30, and the flange 30B of the inter-plate spacer 30 (L-shaped steel) is connected to the bottom plate. It is attached to the lower surface of the steel plate 24A by welding.

One inter-plate spacer 30 is disposed at the center of the fireproof plate 22 in the short side direction, in contact with one side of the fireproof plate 22 (the lower surface of the bottom steel plate 24A). Three of them are arranged at a predetermined interval from each other in the long side direction, and as described above, have the role of creating an escape route for cooling water and water vapor below the fireproof plate 22 of the upper fireproof plate structure 20. There is. A through hole 30X is provided in the web 30A of the interplate spacer 30 (L-shaped steel) to ensure an escape route for cooling water and steam. Further, as shown in FIGS. 2 and 4, the one plate spacer 30 and the three plate spacers 30 are substantially perpendicular to each other.

Further, as described above, the flange 30B of the inter-plate spacer 30 (L-shaped steel) is attached to the lower surface of the bottom steel plate 24A by welding, and the inter -plate spacer 30 reinforces the bottom steel plate 24A. By reinforcing 24A, the entire fireproof board 22 is reinforced. In this embodiment, the inter -plate spacer 30 is arranged below the part of the bottom steel plate 24A to which the anti-slip 24C is attached, and the degree of integration between the fireproof plate 22 and the inter- plate spacer 30 is improved, and the inter-plate spacer 30 is The reinforcing effect of the spacer 30 is further improved.

Since the upper fireproof plate structure 20 is simply placed on the lower fireproof plate structure 40 via the inter-plate spacer 30, in order to prevent the upper fireproof plate structure 20 from shifting, , a cable (wire rope) not shown is attached to the through hole 30X of the web 30A of the inter-plate spacer 30, and this cable (wire rope) is fixed to an external fixed object, so that the entire upper fireproof plate structure 20 is assembled. The position of may be restricted.

The lower fireproof plate structure 40 has a role of supporting the upper fireproof plate structure 20 from below, and has the rigidity to support the upper fireproof plate structure 20 from below. In this embodiment, as described above, in the stacked fireproof plate structure 10 according to the embodiment of the present invention, the upper fireproof plate structure part 20 and the lower fireproof plate structure part 40 are located in the upper stage and the latter in the lower stage. The only difference is in the vertical arrangement, but the configurations themselves are the same.

In the stacked fireproof plate structure 10 according to the embodiment of the present invention, the lower fireproof plate structure 40 is disposed below the upper fireproof plate structure 20, and it has a two-layer structure of fireproof plates 22, 42. Even if the upper fireproof plate structure 20 is damaged by the combustion gas 106 when the rocket 102 is launched, the lower fireproof plate structure 40 can catch the combustion gas 106 when the rocket 102 is launched, thereby improving safety. It has a high structure.

The lower spacer 50 is disposed below the lower fireproof plate structure 40 and is attached to the bottom steel plate 44A of the lower fireproof plate structure 40 by welding. The lower spacer 50 is made of the same shaped steel (L-shaped steel) as the inter-plate spacer 30, and is attached to the bottom steel plate 44A in the same position, and the web is provided with a through hole 50X. However, unlike the plate spacer 30, the lower spacer 50 has the role of providing a gap between the upper fireproof plate structure 20 and the lower fireproof plate structure 40 to create an escape route for cooling water and water vapor. Therefore, depending on the conditions under which the stacked fireproof plate structure 10 is used, it may be omitted.

(2) Application of the stacked fireproof plate structure 10 to the rocket launch facility 100 As described above, the stacked fireproof plate structure 10 according to the embodiment of the present invention has the upper fireproof plate structure 20 on top of the lower fireproof plate structure 40. It has a two-stage fireproof plate structure in which a fireproof plate is placed, and an escape route for cooling water and water vapor is provided between the fireproof plate 22 and the fireproof plate 42. It has a fireproof plate structure that allows the water vapor generated by the fire to escape, and has excellent fire resistance. Furthermore, since the stacked fireproof plate structure 10 has a two-layer structure of the fireproof plates 22 and 42, even if the upper fireproof plate structure 20 is damaged by the combustion gas 106 when the rocket 102 is launched, the lower fireproof plate structure 10 The plate structure portion 40 can receive the combustion gas 106 when the rocket 102 is launched, resulting in a highly safe structure.

Therefore, the stacked fireproof plate structure 10 according to the embodiment of the present invention can be suitably used as a flue deflection plate of the rocket launch facility 100.

Note that when the stacked fireproof plate structure 10 is used as a deflection plate for a flue in the rocket launch facility 100, the area directly exposed to the combustion gas 106 can be predicted almost accurately, so only the area directly exposed to the combustion gas 106 is used. Depending on the conditions of use, it is also possible to use the two-layer stacked fireproof plate structure 10 and use only the lower fireproof plate structure 40 without using the upper fireproof plate structure 20 in other areas. It is.

(3) Supplementary information In the stacked fireproof plate structure 10 according to the embodiment of the present invention, the upper fireproof plate structure 20 and the lower fireproof plate structure 40 are arranged vertically such that the former is located in the upper stage and the latter is located in the lower stage. Although the configurations themselves are the same except for the relationship, the configurations may be changed as appropriate depending on the conditions of use and the like. Specifically, for example, the fireproof plates 22 and 42 may have different thicknesses and materials, the bottom steel plates 24A and 44A and the side steel plates 24B and 44B may have different thicknesses, and the anti-slip plates 24C and 44C may have different thicknesses. The shape etc. may be different. Further, the types and dimensions of the shaped steel used for the inter-plate spacer 30 and the lower spacer 50 may be different. Furthermore, as described above, the lower spacer 50 may be omitted depending on the conditions of use.

Furthermore, depending on the usage conditions of the stacked fireproof plate structure 10, the can body 24 of the upper fireproof plate structure 20 and the can body 44 of the lower fireproof plate structure 40 may be omitted. Alternatively, the upper fireproof plate structure 20 may be composed of only the fireproof plates 22, and the lower fireproof plate structure 40 may be composed only of the fireproof plates 42. Further, depending on the conditions of use of the stacked fireproof plate structure 10, only some of the members (bottom steel plate 24A, side plate steel plate 24B, anti-slip 24C) constituting the can body 24 may be omitted, or the can body 44 may be omitted. You may omit only a part of the members (bottom plate steel plate 44A, side plate steel plate 44B, and anti-slip member 44C).

8... Layered fireproof plate structure 10... Layered fireproof plate structure 20... Upper fireproof plate structure portion 22, 42... Fireproof plate
24, 44...Can body 24A, 44A...Bottom steel plate 24B, 44B...Side plate steel plate 24C, 44C...Slip stopper 24X, 24Y, 30X, 50X...Through hole 30...Spacer between plates 30A...Web 30B...Flange 40...Lower fireproof plate Structure part 50... Lower spacer 100... Rocket launch facility 102... Rocket 104... Flue 106... Combustion gas

Claims (17)

Upper fireproof version,
a lower fireproof plate located below the upper fireproof plate;
a gap forming member that forms a gap of a predetermined distance between the upper fireproof plate and the lower fireproof plate;
tilting means for tilting the upper fireproof plate and the lower fireproof plate by a predetermined angle with respect to a horizontal plane;
A layered fireproof plate structure characterized by having. 2. The upper fireproof plate according to claim 1, wherein each part of the upper fireproof plate is made of a material with the same composition, and each part of the lower fireproof plate is also made of a material with the same composition. Layered fireproof plate structure. According to claim 1 or 2, at least one of the upper fireproof plate and the lower fireproof plate is made of a material that can be formed into a planar shape by pouring and pouring into a mold. Layered fireproof plate structure as described. Any one of claims 1 to 3, wherein the upper fireproof plate has a thickness of 100 mm or more and 200 mm or less, and the predetermined distance between the gaps formed by the gap forming member is 50 mm or more and 100 mm or less. Layered fireproof plate structure described in . The stacked fireproof plate structure according to any one of claims 1 to 4, wherein at least one of the upper fireproof plate and the lower fireproof plate includes a bottom steel plate attached to a lower surface. 6. The stacked fireproof plate structure according to claim 5, wherein a slip stopper is attached to the upper surface of the bottom steel plate. The gap forming member is a plurality of shaped steels attached to the lower surface of the upper fireproof plate and arranged at predetermined intervals in a direction parallel to the lower face of the upper fireproof plate. The layered fireproof plate structure according to any one of claims 1 to 6. Among the plurality of shaped steels constituting the gap forming member, some of the shaped steels are attached to the lower surface of the upper fireproof plate and are mutually arranged in a predetermined direction parallel to the lower surface of the upper fireproof plate. The remaining section steels are arranged at intervals, and are attached to the lower surface of the upper fireproof plate and mutually in a direction parallel to the lower face of the upper fireproof plate and in a direction different from the fixed direction. The laminated fireproof plate structure according to claim 7, wherein the laminated fireproof plate structures are arranged at predetermined intervals. The laminated fireproof plate structure according to claim 8, wherein the certain direction and the direction different from the certain direction are substantially orthogonal directions. The stacked fireproof plate structure according to any one of claims 7 to 9, wherein a slip stopper embedded inside the upper fireproof plate is attached to the upper surface of the section steel. The upper refractory plate is configured by being divided into a plurality of upper refractory blocks in the in-plane direction, and the upper refractory blocks that are adjacent in the in-plane direction are arranged in close contact with each other. The layered fireproof plate structure according to any one of claims 1 to 10. The lower refractory plate is divided into a plurality of lower refractory blocks in the in-plane direction, and the lower refractory blocks that are adjacent in the in-plane direction are arranged in close contact with each other. The layered fireproof plate structure according to any one of claims 1 to 11. 13. The stacked fireproof plate structure according to claim 1, further comprising a lower spacer below the lower fireproof plate. The stacked fireproof plate structure according to any one of claims 1 to 13, further comprising a restraining member that restricts the position of the upper fireproof plate. The laminated fireproof plate structure according to any one of claims 1 to 14, wherein at least one of the upper fireproof plate and the lower fireproof plate is formed of castable refractory material. The laminated fireproof plate structure according to any one of claims 1 to 15, wherein the size of the upper fireproof plate in an in-plane direction is smaller than the size of the lower fireproof plate in an in-plane direction. A rocket launch facility comprising the layered fireproof plate structure according to any one of claims 1 to 16.

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