Rocket launch deflection fireproof plate and method for replacing rocket launch deflection fireproof plate

Abstract

To provide a deflecting refractory plate for rocket launching and a method of replacing the same, where the plate is composed of upper and lower sections but has minimal adverse effects due to flowing-down combustion gas, and where the refractory plate can be replaced at low cost easily.SOLUTION: A deflecting refractory plate for rocket launching includes a first refractory member 11 and a second refractory member 13. An upper surface 12A of the first refractory member 11 and an upper surface 14A of the second refractory member 13 are supported from below by a support member 72 adjacently to each other each with inclination at a predetermined angle with respect to the horizontal plane. The first refractory member 11 is positioned on the upper side relative to the second refractory member 13, and positioned on the support member 72 at a different angle of inclination with respect to the horizontal plane than the second refractory member 13. A surface 12A1, which is a virtual parallel extension of the upper surface 12A of the first refractory member 11, is positioned to intersect the upper surface 14A of the second refractory member 13. There is no gap between the first refractory member 11 and the second refractory member 13 when viewed from the vertically upper side.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a deflection refractory plate for rocket launch and a method for replacing the deflection refractory plate for rocket launch. In the present application, the replacement of the deflection refractory plate for rocket launch includes both the case of replacing the entire deflection refractory plate for rocket launch and the case of replacing a part of the deflection refractory plate for rocket launch.

Background Art

[0002] The combustion gas at the time of rocket launch is an extremely high-temperature gas fluid. In a rocket launch facility 100, as shown in FIG. 15 (FIG. 6 of Patent Document 1), below the launch pad 104 of the rocket 102 to be launched, a flue 106 for discharging the combustion gas at the time of rocket 102 launch is provided. In order to smoothly discharge the combustion gas at the time of rocket 102 launch into the flue 106, at the position in the flue 106 directly below the rocket 102 to be launched, a flame deflection plate 108 for changing the direction of the combustion gas at the time of rocket 102 launch along the direction of the flue 106 is provided. As shown in FIG. 15, this flame deflection plate 108 is provided inclined with respect to the horizontal plane, and its lower part is curved in an arc shape so that the angle of the inclined surface gradually becomes gentle and finally approaches an angle close to the horizontal plane, so as to smoothly change the direction of the combustion gas at the time of rocket 102 launch along the direction of the flue 106.

[0003] On the other hand, the flame deflection plate 108 is arranged directly below the rocket 102 to be launched and is placed in an extremely harsh environment directly exposed to the combustion gas at the time of rocket 102 launch. After a certain degree of use, maintenance and replacement for damage etc. become necessary. However, the height of the flame deflection plate 108 is about 5 m, and scaffolding is required during maintenance work, which is time-consuming.

[0004] One technology that can address this point is the technology described in Patent Document 1, as shown in Figures 16 and 17 (Figures 1 and 2 of Patent Document 1). In this technology, the flame deflection plate 110 is divided into an upper deflection plate 112 and a lower deflection plate 114. The upper deflection plate 112 is provided so as to be able to swing between a position that closes the flue opening (see Figure 16) and a position that engages with the lower deflection plate 114 (see Figure 17), centered on an axis 116 provided near the flue opening. The lower deflection plate 114 is fixed to the flue 120 by a fixing part 118. The upper deflection plate 112 consists of a base part 112a and an insulating material 112b, and a stepped portion 112c is provided at the end opposite the axis 116, with the base part 112a side cut out. The lower deflection plate 114 consists of a base 114a and an insulating material 114b, and the entire structure is fixed at an upward inclination. A stepped portion 114c is provided at the upper end, with a cutout on the insulating material 114b side. The material of the base 112a and 114a is not described in Patent Document 1, so it is assumed that concrete is used, similar to the prior art described in the [Prior Art] section of Patent Document 1. During rocket launch, the upper deflection plate 112 swings in the direction of the arrow in Figure 16, and the stepped portions 112c and 114c engage the upper deflection plate 112 and the lower deflection plate 114.

[0005] However, in the flame deflection plate 110 described in Patent Document 1, even when the upper deflection plate 112 is engaged with the lower deflection plate 114, it is difficult to eliminate the gap between the upper deflection plate 112 and the lower deflection plate 114. In particular, in the flame deflection plate 110 described in Patent Document 1, the upper deflection plate 112 is configured to swing, and even when the upper deflection plate 112 is engaged with the lower deflection plate 114, it is considered that a certain gap or more will inevitably remain between the upper deflection plate 112 and the lower deflection plate 114.

[0006] In contrast, paragraph 0008 of Patent Document 1 states that stepped portions 112c and 114c are provided at the engagement portion between the upper deflection plate 112 and the lower deflection plate 114, thereby preventing the combustion exhaust gas of the rocket from escaping through the joint between the upper deflection plate 112 and the lower deflection plate 114 to the back side of the flame deflection plate. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 2732048 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] However, as shown in Figures 16 and 17, the gaps created in the stepped portions 112c and 114c at the engaging portion penetrate straight through the thickness direction between the insulating materials 112b and 114b to reach the base portions 112a and 114a of the stepped portions 112c and 114c. The base portions 112a and 114a (presumably made of concrete) that form the stepped portions 112c and 114c are directly affected by the combustion gases during the launch of rocket 102, and are therefore expected to deteriorate and be damaged.

[0009] As described in the "Operation" section of paragraph 0006 and the "Effects of the Invention" section of paragraph 0012 of Patent Document 1, Patent Document 1 appears to primarily focus on the installation of insulation material as a maintenance task. However, if the base (presumably concrete) forming the stepped sections 112c and 114c deteriorates and becomes damaged, replacing the insulation material will not suffice, and it will be necessary to replace the entire flame deflection plate 110. The flame deflection plate 110 described in Patent Document 1 requires the provision of stepped sections 112c and 114c, and the upper deflection plate 112 must be manufactured and installed so that it can swing between a position that blocks the flue opening and a position that engages with the lower deflection plate 114, centered on an axis 116 provided near the flue opening. Replacing the entire flame deflection plate 110 would be costly and time-consuming.

[0010] The present invention has been made in view of the above, and aims to provide a rocket launch deflection fireproof plate and a method for replacing the rocket launch deflection fireproof plate, which are configured in upper and lower sections, but which suppress adverse effects due to the flow of combustion gases, and which allow for low-cost and easy replacement of the fireproof plate. [Means for solving the problem]

[0011] The present invention solves the aforementioned problems and is a rocket launch deflection fireproof plate and a method for replacing the rocket launch deflection fireproof plate as described below.

[0012] That is, the first embodiment of the rocket launch deflection fireproof plate according to the present invention is a rocket launch deflection fireproof plate having a plurality of fireproof members and a support member that supports the plurality of fireproof members at a predetermined angle, wherein the plurality of fireproof members include a first fireproof member having a predetermined thickness and having an upper surface, a lower surface and side surfaces, and a second fireproof member having a predetermined thickness and having an upper surface, a lower surface and side surfaces, and the upper surfaces of the first fireproof member and the upper surface of the second fireproof member are supported from below by the support member so that they are inclined at a predetermined angle with respect to the horizontal plane and adjacent to each other, the first fireproof member is positioned above the second fireproof member and is positioned on the support member such that it has a different angle of inclination with respect to the horizontal plane than the second fireproof member, and a surface that is virtually parallel to the upper surface of the first fireproof member is positioned to intersect with the upper surface of the second fireproof member, and there is no gap between the first fireproof member and the second fireproof member when viewed from above in the vertical direction.

[0013] In this application, with respect to the present invention and the rocket launch deflection fireproof plate and its constituent members according to embodiments of the present invention, the interpretation of terms that refer to up and down, such as "up" and "down," shall be based on the state in which the rocket launch deflection fireproof plate according to embodiments of the present invention is actually placed in use. The same shall apply to other parts of this application.

[0014] Furthermore, the statement that "there is no gap between the first fire-resistant member and the second fire-resistant member when viewed from above in the vertical direction" includes a state in which, even if there is actually a gap between the first fire-resistant member and the second fire-resistant member, that gap is not visible when viewed from above in the vertical direction. Similar descriptions in other parts of this application shall be interpreted in the same way.

[0015] A second embodiment of the rocket launch deflection fireproof plate according to the present invention is an embodiment in which, in the rocket launch deflection fireproof plate according to the first embodiment, a first side portion of the side surface of the first fireproof member that faces the second fireproof member and a second side portion of the side surface of the second fireproof member that faces the first side portion are arranged with a predetermined gap between them.

[0016] A third embodiment of the rocket launch deflection fireproof plate according to the present invention is an embodiment in which, in the rocket launch deflection fireproof plate of the second embodiment, the second fireproof member is substantially rectangular in shape, and a portion of the upper surface of the rectangular parallelepiped that is close to the adjacent first fireproof member is cut out.

[0017] A fourth aspect of the rocket launch deflection fireproof plate according to the present invention is an aspect of the rocket launch deflection fireproof plate according to the first aspect, wherein the second fireproof member is configured such that the upper end of the upper surface abuts against the lower end surface of the first fireproof member.

[0018] A fifth aspect of the rocket launch deflection fireproof plate according to the present invention is an aspect of the rocket launch deflection fireproof plate according to the first aspect, wherein the second fireproof member is configured such that the upper end of the upper surface is in contact with the lower end of the lower end surface of the first fireproof member.

[0019] A sixth aspect of the rocket launch deflection fireproof plate according to the present invention is an aspect of the rocket launch deflection fireproof plate according to the first aspect, wherein the lower end of the lower surface of the first fireproof member is in contact with the upper surface of the second fireproof member.

[0020] The seventh aspect of the deflection refractory plate for rocket launch according to the present invention is an aspect in which, in the deflection refractory plate for rocket launch according to any one of the first to sixth aspects, the plurality of refractory members are only the first refractory member and the second refractory member.

[0021] The eighth aspect of the deflection refractory plate for rocket launch according to the present invention is an aspect in which, in the deflection refractory plate for rocket launch according to any one of the first to seventh aspects, each of the plurality of refractory members includes a refractory plate block and a support beam that fixes the position of the refractory plate block on the support member, and the support beam is connected to the lower surface of the refractory plate block.

[0022] The ninth aspect of the deflection refractory plate for rocket launch according to the present invention is an aspect in which, in the deflection refractory plate for rocket launch according to the eighth aspect, the plurality of refractory members are configured to be detachably fixed to the support member at a predetermined inclination angle.

[0023] The first aspect of the replacement method of the deflection refractory plate for rocket launch according to the present invention is a replacement method of the deflection refractory plate for rocket launch according to any one of the first to third aspects, which includes a raising step of raising the second refractory member with the lowest part as the rotation center, and a removing step of lifting and removing the second refractory member raised in the raising step.

[0024] The second aspect of the replacement method of the deflection refractory plate for rocket launch according to the present invention is a replacement method of the deflection refractory plate for rocket launch according to any one of the first to third and fifth aspects, which includes a rotating step of rotating the second refractory member to be horizontal with the lowest part as the rotation center, and a removing step of removing the second refractory member made horizontal in the rotating step.

[0025] The third aspect of the method for replacing the deflection refractory plate for rocket launch according to the present invention is the method for replacing the deflection refractory plate for rocket launch according to the first or the fourth aspect, and includes a rotation step of rotating the second refractory member so as to be horizontal with the highest-position part as the rotation center, and a removal step of removing the second refractory member made horizontal in the rotation step. The method for replacing the deflection refractory plate for rocket launch is characterized by having these steps.

[0026] The fourth aspect of the method for replacing the deflection refractory plate for rocket launch according to the present invention is the method for replacing the deflection refractory plate for rocket launch according to the first or the sixth aspect, and is characterized by pulling up and removing the second refractory member obliquely upward while maintaining the inclination angle.

Advantages of the Invention

[0027] According to the present invention, although it is configured to be divided vertically, it is possible to provide a deflection refractory plate for rocket launch and a method for replacing the deflection refractory plate for rocket launch in which the adverse effects caused by the flow-down of combustion gas are suppressed, and the refractory plate can be replaced at low cost and easily.

Brief Description of the Drawings

[0028] [Figure 1] Side view of the deflection refractory plate 10 for rocket launch according to the first embodiment of the present invention [Figure 2] View of the upper refractory plate block 12 and the lower refractory plate block 14 of the deflection refractory plate 10 for rocket launch according to the first embodiment as seen from the upper side in the vertical direction (from the direction of arrow II in FIG. 1) [Figure 3] Enlarged side view showing the adjacent part of the upper refractory plate block 12 and the lower refractory plate block 14 and its peripheral area [Figure 4] Side view of the lower refractory plate block 14 [Figure 5] Side view schematically showing the situation when removing the lower refractory plate block 14 of the deflection refractory plate 10 for rocket launch according to the first embodiment of the present invention [Figure 6]Side view of a rocket launch deflection fireproof plate 20 according to a second embodiment of the present invention [Figure 7] Enlarged side view showing the adjacent area and surrounding region of the upper fireproof plate block 12 and the lower fireproof plate block 24. [Figure 8] A schematic side view showing the situation when removing the lower fireproof plate block 24 of the rocket launch deflection fireproof plate 20 according to the second embodiment of the present invention. [Figure 9] Side view of a rocket launch deflection fireproof plate 30 according to the third embodiment of the present invention [Figure 10] Enlarged side view showing the adjacent area and surrounding region of the upper fireproof plate block 12 and the lower fireproof plate block 34. [Figure 11] A schematic side view showing the situation when removing the lower fireproof plate block 34 of the rocket launch deflection fireproof plate 30 according to the third embodiment of the present invention. [Figure 12] Side view of a rocket launch deflection fireproof plate 40 according to the fourth embodiment of the present invention [Figure 13] Enlarged side view showing the adjacent area and surrounding region of the upper fireproof plate block 12 and the lower fireproof plate block 44. [Figure 14] A schematic side view showing the situation when removing the lower fireproof plate block 44 of the rocket launch deflection fireproof plate 40 according to the fourth embodiment of the present invention. [Figure 15] A diagram representing the prior art described in Patent Document 1. [Figure 16] Side cross-sectional view of a flame deflection plate for a rocket launch platform according to an embodiment of the invention described in Patent Document 1. [Figure 17] A side cross-sectional view showing the state in which the upper deflection plate and the lower deflection plate are engaged in the flame deflection plate of a rocket launch platform according to an embodiment of the invention described in Patent Document 1. [Modes for carrying out the invention]

[0029] Embodiments of the present invention will be described in detail below with reference to the drawings.

[0030] (1) First Embodiment Figure 1 is a side view of the rocket launch deflection fireproof plate 10 according to the first embodiment of the present invention; Figure 2 is a view of the upper fireproof plate block 12 and lower fireproof plate block 14 of the rocket launch deflection fireproof plate 10 according to the first embodiment of the present invention, viewed from the vertically upward direction (from the direction of arrow II in Figure 1); Figure 3 is an enlarged side view showing the adjacent parts of the upper fireproof plate block 12 and lower fireproof plate block 14 and their surrounding areas; Figure 4 is a side view of the lower fireproof plate block 14; and Figure 5 is a schematic side view showing the situation when the lower fireproof plate block 14 of the rocket launch deflection fireproof plate 10 according to the first embodiment of the present invention is removed.

[0031] The rocket launch deflection fireproof plate 10 according to the first embodiment of the present invention comprises an upper fireproof member 11, a lower fireproof member 13, and a steel frame structure 72 that fixes the upper fireproof member 11 and the lower fireproof member 13 at a predetermined inclination angle and supports them from below.

[0032] The upper fire-resistant member 11 is composed of an upper fire-resistant plate block 12 and a support beam 16. The support beam 16 is attached to the lower surface of the upper fire-resistant plate block 12, and the upper fire-resistant plate block 12 and the support beam 16 are integrated together.

[0033] The lower fire-resistant member 13 is composed of a lower fire-resistant plate block 14 and a support beam 18. The support beam 18 is attached to the lower surface of the lower fire-resistant plate block 14, and the lower fire-resistant plate block 14 and the support beam 18 are integrated together.

[0034] The upper fireproof plate block 12 and the lower fireproof plate block 14 have the role of receiving the combustion gases during rocket launch and directing the combustion gases in a predetermined direction (towards the flue).

[0035] As shown in Figure 1, the upper fire-resistant plate block 12 and the lower fire-resistant plate block 14 are attached to the frame structure 72 via support beams 16 and 18 such that the lower fire-resistant plate block 14, located below, has a smaller angle of inclination with respect to the horizontal plane than the upper fire-resistant plate block 12, located above (hereinafter sometimes referred to as arrangement configuration 1-1).

[0036] Furthermore, as shown in Figure 3, the upper fire-resistant plate block 12 and the lower fire-resistant plate block 14 are attached to the frame structure 72 and arranged such that a surface 12A1, which is virtually a parallel extension of the upper surface 12A of the upper fire-resistant plate block 12, intersects with the upper surface 14A of the lower fire-resistant plate block 14, which is located diagonally below (hereinafter, this may be referred to as arrangement configuration 1-2).

[0037] Furthermore, as shown in Figures 2 and 3, the upper end 14A1 of the upper surface 14A of the lower fire-resistant plate block 14 is located below the lower end of the upper fire-resistant plate block 12, and when viewed from above in the vertical direction, there is no gap between the upper fire-resistant plate block 12 and the lower fire-resistant plate block 14 (hereinafter sometimes referred to as arrangement configuration 1-3).

[0038] Therefore, the combustion gases during rocket launch flow smoothly down along the upper surface 12A of the upper fireproof plate block 12 and the upper surface 14A of the lower fireproof plate block 14, changing their direction of flow towards the flue and proceeding into the flue. Conventionally, as shown in Figures 15 to 17, the lower part of the rocket launch deflection fireproof plate (flame deflection plate in Figures 15 to 17) was curved in an arc shape so that the angle of the inclined surface was gradually made gentler until it reached an angle close to the horizontal plane, thereby smoothly changing the direction of the combustion gases during rocket launch to a direction along the flue. However, in the rocket launch deflection fireproof plate 10 according to this first embodiment, by adopting the arrangement configurations 1-1, 1-2 and 1-3 described above, the direction of the combustion gases during rocket launch can be smoothly changed to a direction along the flue even with only flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 14).

[0039] The inclination angle of the upper fire-resistant plate block 12 with respect to the horizontal plane is typically between 40° and 60°, and the inclination angle of the lower fire-resistant plate block 14 with respect to the horizontal plane is typically between 15° and 35°.

[0040] The support beams 16 and 18 serve to attach the upper fire-resistant plate block 12 and the lower fire-resistant plate block 14 to the frame structure 72, respectively, and fix the positions of the upper fire-resistant plate block 12 and the lower fire-resistant plate block 14. For example, steel members with an H-shaped cross-section can be used for the support beams 16 and 18. The support beams 16 and 18 can be attached to the frame structure 72 in a detachable manner using bolts or the like.

[0041] As shown in Figure 1, the frame structure 72 is a steel structure comprising a bottom horizontal steel member 72A, a vertical steel member 72B, a diagonal steel member 72C, and an intermediate horizontal steel member 72D, and plays the role of supporting the upper fire-resistant plate block 12 and the lower fire-resistant plate block 14 at a predetermined inclination angle. The diagonal steel member 72C has an inclination angle corresponding to the inclination angle required for the upper fire-resistant plate block 12. For each of the aforementioned members 72A, 72B, 72C, and 72D of the frame structure 72, for example, steel members with an H-shaped cross-section can be used.

[0042] The upper fireproof plate block 12 is connected to the diagonal steel member 72C via the support beam 16. In principle, the inclination angle of the upper fireproof plate block 12 with respect to the horizontal plane should match the inclination angle of the diagonal steel member 72C with respect to the horizontal plane. However, it is also possible to fine-tune the inclination angle by interposing a spacer such as a thin steel plate between the diagonal steel member 72C and the support beam 16. Since there are no obstructions above the upper fireproof plate block 12, when replacing the upper fireproof plate block 12, the bolt connection of the support beam 16 to the diagonal steel member 72C can be released, and then the upper fireproof plate block 12 can be lifted and removed.

[0043] The support beam 18 attached to the lower surface of the lower fireproof plate block 14 is supported by the frame structure 72 at the lower support portion 72C1 of the diagonal steel member 72C and the contact portion 72A1 with the bottom horizontal steel member 72A. The lower fireproof plate block 14 is positioned such that the angle of inclination of the lower fireproof plate block 14 with respect to the horizontal plane is smaller than the angle of inclination of the upper fireproof plate block 12 with respect to the horizontal plane (see arrangement configuration 1-1, Figure 1), and that a surface 12A1 obtained by virtually extending the upper surface 12A of the upper fireproof plate block 12 parallel to intersects the upper surface 14A of the lower fireproof plate block 14 which is located diagonally below (see arrangement configuration 1-2, Figure 3). The upper end 14A1 of the upper surface 14A of the lower fireproof plate block 14 is located below the lower end of the upper fireproof plate block 12, and when viewed from above in the vertical direction, there is no gap between the upper fireproof plate block 12 and the lower fireproof plate block 14 (see arrangement configuration 1-3, Figures 2 and 3). In the support section 72C1, the upper end of the lower surface of the support beam 18 attached to the lower surface of the lower fireproof plate block 14 is detachably connected to the inclined steel member 72C with bolts via a predetermined jig. The predetermined jig is provided with elongated holes through which the bolts are inserted, so that the fixing position can be finely adjusted. In the contact section 72A1, the lower end of the lower surface of the support beam 18 is in contact with the upper surface of the bottom horizontal steel member 72A, and a stopper 72A2 is provided on the upper surface of the bottom horizontal steel member 72A in the vicinity of this, to prevent the lower fireproof plate block 14 from sliding in a direction that reduces its inclination with respect to the horizontal plane.

[0044] As shown in Figures 3 and 4, the lower fireproof plate block 14 is a roughly rectangular parallelepiped with a cutout on the upper surface 14A side of the portion adjacent to the upper fireproof plate block 12 directly above it. The shape of the lower fireproof plate block 14 when viewed from the side is a trapezoid where (width of the upper surface 14A of the lower fireproof plate block 14 x 1) < (width of the lower surface 14B of the lower fireproof plate block 14 x 2). The surface adjacent to the upper fireproof plate block 12 directly above it is an inclined surface 14C, and a gap z is provided between the upper fireproof plate block 12 and the lower fireproof plate block 14. The size of the gap z is determined so that the lower fireproof plate block 14 does not come into contact with the upper fireproof plate block 12 located directly above it, whether the lower fireproof plate block 14 is rotated upward or downward, centered on the contact portion 72A1 between the support beam 18 attached to the lower surface of the lower fireproof plate block 14 and the bottom horizontal steel member 72A of the frame structure 72.

[0045] Therefore, as shown in Figure 5, the lower fireproof plate block 14 does not come into contact with the upper fireproof plate block 12 located directly above it, whether it is rotated upward or downward around the contact point 72A1 with the horizontal steel member 72A at the bottom of the frame structure 72. Thus, when replacing the lower fireproof plate block 14, it is possible to rotate it upward around the contact point 72A1 to make it stand upright and then lift it up for removal, or to rotate it downward around the contact point 72A1 to make it lie horizontally and then pull it out horizontally for removal. The lower part of the diagonal steel member 72C of the frame structure 72 is configured to be detachable, and when rotating the lower fireproof plate block 14 downward to make it lie horizontal, the lower part of the diagonal steel member 72C is removed from the frame structure 72.

[0046] The integration of the upper fireproof plate block 12 and the support beam 16, and the integration of the lower fireproof plate block 14 and the support beam 18 can be performed, for example, when the upper fireproof plate block 12 and the lower fireproof plate block 14 are formed from castable refractory material (details will be described later), by providing anti-slip features on the upper surfaces of the support beams 16 and 18, and integrating them when forming the upper fireproof plate block 12 and the lower fireproof plate block 14, respectively. Alternatively, after forming the upper fireproof plate block 12 and the lower fireproof plate block 14, the support beam 16 may be attached to the upper fireproof plate block 12 and the support beam 18 to the lower fireproof plate block 14 using anchor bolts or the like.

[0047] The upper fireproof plate block 12 and the lower fireproof plate block 14 have the role of receiving the combustion gases during rocket launch and directing the combustion gases in a predetermined direction (towards the flue). Therefore, the upper fireproof plate block 12 and the lower fireproof plate block 14 are required to have excellent fire resistance as well as mechanical performance to withstand the pressure of the combustion gases during rocket launch.

[0048] The material of the upper fireproof plate block 12 and the lower fireproof plate block 14 is not particularly limited as long as it can exhibit the necessary fire resistance and mechanical properties. Specifically, depending on the required fire resistance and mechanical properties, for example, alumina, magnesia, chromium oxide, zirconia, etc., can be used for the upper fireproof plate block 12 and the lower fireproof plate block 14. Castable refractories (a mixture of lightweight aggregate with high fire resistance and alumina cement) can be suitably used for the upper fireproof plate block 12 and the lower fireproof plate block 14 because they are easy to handle when manufacturing the upper fireproof plate block 12 and the lower fireproof plate block 14, easy to repair, and cost-effective.

[0049] The upper fireproof plate block 12 and the lower fireproof plate block 14 are each composed of a single material. Here, "single material" means that each part of the upper fireproof plate block 12 and the lower fireproof plate block 14 is composed of a material with the same composition; it does not exclude materials made by mixing multiple types of fireproof materials. Because the upper fireproof plate block 12 and the lower fireproof plate block 14 are composed of a single material, repairs in the event of damage can also be carried out using that single material, eliminating the need for multiple materials or components and making the repair process easy. For example, if the upper fireproof plate block 12 and the lower fireproof plate block 14 are formed from castable refractory material, damaged areas (e.g., areas scraped away by combustion gases during rocket launch) can be repaired with castable refractory material. Repairs using castable refractory material can be carried out by filling the damaged area (scraped area, etc.) with castable refractory material. Furthermore, if safety can be confirmed, it is possible to repair the upper fire-resistant plate block 12 and the lower fire-resistant plate block 14 with fire-resistant materials different from the fire-resistant materials used when they were initially formed.

[0050] The thickness of the upper fireproof plate block 12 and the lower fireproof plate block 14 is typically around 150 to 250 mm, from the standpoint of safely containing the combustion gases during rocket launch. Furthermore, from the standpoint of ease of handling and manufacturing, the in-plane dimensions of the upper fireproof plate block 12 and the lower fireproof plate block 14 are typically around 800 to 4000 mm.

[0051] When the upper fireproof plate block 12 and the lower fireproof plate block 14 are formed from castable refractory material, the upper fireproof plate block 12 and the lower fireproof plate block 14 can be formed by assembling formwork in a predetermined shape and casting the castable refractory material into the formwork, which allows for inexpensive manufacturing. Alternatively, a bottom steel plate (not shown) may be attached to the lower surface of each of the upper fireproof plate block 12 and the lower fireproof plate block 14, and when the upper fireproof plate block 12 and the lower fireproof plate block 14 are formed by casting castable refractory material into formwork, the bottom steel plate can also be used as part of the formwork. In that case, a shearing prevention member (not shown) may be attached to the upper surface of the bottom steel plate, and by embedding the shearing prevention member inside the upper fireproof plate block 12 and the lower fireproof plate block 14, respectively, the degree of integration between the upper fireproof plate block 12 and the lower fireproof plate block 14 and the bottom steel plate can be improved, thereby improving the load-bearing capacity of the upper fireproof plate block 12 and the lower fireproof plate block 14.

[0052] When the upper fireproof plate block 12 and the lower fireproof plate block 14 are made of castable refractory material, as described above, damaged areas can be repaired with castable refractory material. However, if the level of damage exceeds the level that can be repaired, one or both of the upper fireproof plate block 12 and the lower fireproof plate block 14 may be replaced as needed.

[0053] As mentioned above, there are no obstructions above the upper fireproof plate block 12, so when replacing the upper fireproof plate block 12, the bolt connection of the support beam 16 to the diagonal steel member 72C can be released, and then the upper fireproof plate block 12 can be lifted and removed. When lifting the upper fireproof plate block 12, the hook of the lifting device is engaged with a through hole (not shown) provided in the web portion of the support beam 16, so the upper fireproof plate block 12 and the support beam 16 are removed as a single unit.

[0054] On the other hand, since the upper fireproof plate block 12 is located diagonally above the lower fireproof plate block 14, when replacing only the lower fireproof plate block 14 without replacing the upper fireproof plate block 12, it is necessary to remove the lower fireproof plate block 14 while avoiding the upper fireproof plate block 12. Therefore, when replacing the lower fireproof plate block 14, after releasing the bolt connection at the support part 72C1, as shown in Figure 5, it is either rotated upward around the contact part 72A1 to stand it upright and then lifted up and removed, or rotated downward around the contact part 72A1 to lay it horizontally and then pulled out horizontally to remove it. As mentioned above, the lower part of the diagonal steel member 72C of the frame structure 72 is configured to be detachable, and when rotating the lower fireproof plate block 14 downward to lay it horizontally, the lower part of the diagonal steel member 72C is removed from the frame structure 72. Since a support beam 18 is attached to the lower surface of the lower fireproof plate block 14, even when the lower fireproof plate block 14 is laid horizontally, a gap equal to the height of the support beam 18 is created between the lower surface of the lower fireproof plate block 14 and the floor surface of the flue. Therefore, when removing it by pulling it out horizontally, this gap can be used to remove it with a forklift or the like. When rotating it upwards around the contact portion 72A1 to stand it upright and then lifting it up for removal, the hook of the lifting device is engaged with a through hole (not shown) provided in the web portion of the support beam 18 and lifted up. Whether the lower fireproof plate block 14 is lifted upright and removed, or when it is pulled out horizontally for removal, the lower fireproof plate block 14 and the support beam 18 are removed as a single unit.

[0055] As shown in Figures 3 and 4, the lower fire-resistant plate block 14 has a roughly rectangular parallelepiped shape, with the upper surface 14A side cut out from the rectangular parallelepiped in the area adjacent to the upper fire-resistant plate block 12 directly above it. Whether it is rotated upward or downward around the contact portion 72A1, it does not come into contact with the upper fire-resistant plate block 12 located directly above it. Therefore, when replacing it, the removal method that is easier to perform can be adopted depending on the site conditions.

[0056] As described above, with respect to the rocket launch deflection fireproof plate 10 according to this first embodiment, it is possible to easily replace either only one of the upper fireproof plate block 12 and the lower fireproof plate block 14, or both.

[0057] Furthermore, in the rocket launch deflection fireproof plate 10 according to this first embodiment, by adopting the arrangement configurations 1-1, 1-2, and 1-3 described above, the direction of the combustion gases during rocket launch can be smoothly changed to a direction along the flue even with only flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 14). In this first embodiment, the rocket launch deflection fireproof plate 10 is composed only of inexpensive flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 14). In addition, the upper fireproof member 11 and the lower fireproof member 13 can be attached to the frame structure 72 by bolting, and no special attachment method is used.

[0058] Therefore, the rocket launch deflection fireproof plate 10 according to this first embodiment has reduced costs both when newly installed and when replaced.

[0059] (2) Second Embodiment Figure 6 is a side view of the rocket launch deflection fireproof plate 20 according to the second embodiment of the present invention; Figure 7 is an enlarged side view showing the adjacent portion of the upper fireproof plate block 12 and the lower fireproof plate block 24 and the surrounding area; and Figure 8 is a schematic side view showing the situation when the lower fireproof plate block 24 of the rocket launch deflection fireproof plate 20 according to the second embodiment of the present invention is removed.

[0060] In the first embodiment, the lower fireproof plate block 14 of the rocket launch deflection fireproof plate 10, as shown in Figures 3 and 4, is a roughly rectangular parallelepiped with a notch cut out from the upper surface 14A side of the portion adjacent to the upper fireproof plate block 12 directly above it. In the rocket launch deflection fireproof plate 10 of the first embodiment, the lower fireproof plate block 14 was configured so that it would not come into contact with the upper fireproof plate block 12 located directly above it, whether it was rotated upward or downward around the contact portion 72A1. However, in the rocket launch deflection fireproof plate 20 of this second embodiment, the lower fireproof plate block 24 is rectangular parallelepiped, as shown in Figures 6 to 8, and the upper end 24A1 of the upper surface 24A of the lower fireproof plate block 24 is in contact with the contact portion 12B1 near the center of the lower end surface 12B of the upper fireproof plate block 12 located directly above it. With respect to other components, the rocket launch deflection fireproof plate 20 according to this second embodiment is the same as the rocket launch deflection fireproof plate 10 according to the first embodiment. Therefore, the same reference numerals are used for corresponding members and parts, and their descriptions are omitted in principle. Furthermore, the lower fireproof plate block 24 is the same as the lower fireproof plate block 14 of the rocket launch deflection fireproof plate 10 according to the first embodiment, except that its shape is a rectangular parallelepiped. Therefore, the description of the lower fireproof plate block 24 is omitted as appropriate, and the omitted points are replaced by the description of the lower fireproof plate block 14 in "(1) First Embodiment" above.

[0061] A rocket launch deflection fireproof plate 20 according to a second embodiment of the present invention comprises an upper fireproof member 11, a lower fireproof member 23, and a steel frame structure 72 that fixes the upper fireproof member 11 and the lower fireproof member 23 at a predetermined inclination angle and supports them from below.

[0062] The lower fire-resistant member 23 is composed of a lower fire-resistant plate block 24 and a support beam 18. The support beam 18 is attached to the lower surface of the lower fire-resistant plate block 24, and the lower fire-resistant plate block 24 and the support beam 18 are integrated together.

[0063] The lower fireproof plate block 24 works in cooperation with the upper fireproof plate block 12 to receive the combustion gases during rocket launch and direct the combustion gases in a predetermined direction (towards the flue).

[0064] As shown in Figure 6, the upper fire-resistant plate block 12 and the lower fire-resistant plate block 24 are attached to the frame structure 72 such that the lower fire-resistant plate block 24, located below, has a smaller angle of inclination with respect to the horizontal plane than the upper fire-resistant plate block 12, located above (hereinafter sometimes referred to as arrangement configuration 2-1).

[0065] Furthermore, as shown in Figure 7, the upper fire-resistant plate block 12 and the lower fire-resistant plate block 24 are attached to the frame structure 72 and arranged such that a surface 12A1, which is virtually a parallel extension of the upper surface 12A of the upper fire-resistant plate block 12, intersects with the upper surface 24A of the lower fire-resistant plate block 24, which is located diagonally below (hereinafter, this may be referred to as arrangement configuration 2-2).

[0066] Furthermore, as shown in Figure 7, the upper end 24A1 of the upper surface 24A of the lower fireproof plate block 24 is located below the lower end of the upper fireproof plate block 12, and when viewed from above in the vertical direction, there is no gap between the upper fireproof plate block 12 and the lower fireproof plate block 24 (hereinafter sometimes referred to as arrangement configuration 2-3).

[0067] Therefore, the combustion gases during rocket launch flow smoothly down along the upper surface 12A of the upper fireproof plate block 12 and the upper surface 24A of the lower fireproof plate block 24, changing their direction of flow towards the flue and proceeding into the flue. In the rocket launch deflection fireproof plate 20 according to this second embodiment, by adopting the arrangement configurations 2-1, 2-2, and 2-3 described above, the direction of the combustion gases during rocket launch can be smoothly changed to a direction along the flue even with only flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 24).

[0068] The support beam 18 has the role of attaching the lower fire-resistant plate block 24 to the frame structure 72 and fixing the position of the lower fire-resistant plate block 24. For example, a steel material with an H-shaped cross-section can be used for the support beam 18. The support beam 18 can be attached to the frame structure 72 in a detachable manner using bolts or the like.

[0069] The support beam 18 attached to the lower surface of the lower fireproof plate block 24 is supported by the frame structure 72 at the lower support portion 72C2 of the diagonal steel member 72C and the contact portion 72A3 with the bottom horizontal steel member 72A. The lower fireproof plate block 24 is positioned such that the angle of inclination of the lower fireproof plate block 24 with respect to the horizontal plane is smaller than the angle of inclination of the upper fireproof plate block 12 with respect to the horizontal plane (see arrangement configuration 2-1, Figure 6), and the surface 12A1 obtained by virtually extending the upper surface 12A of the upper fireproof plate block 12 parallel to intersects the upper surface 24A of the lower fireproof plate block 24 which is located diagonally below (see arrangement configuration 2-2, Figure 7). The upper end 24A1 of the upper surface 24A of the lower fireproof plate block 24 is located below the lower end of the upper fireproof plate block 12, and when viewed from above in the vertical direction, there is no gap between the upper fireproof plate block 12 and the lower fireproof plate block 24 (see arrangement configuration 2-3 and Figure 7). In the support section 72C2, the upper end of the lower surface of the support beam 18 attached to the lower surface of the lower fireproof plate block 24 is detachably connected to the inclined steel member 72C by bolts via a predetermined jig. The predetermined jig is provided with elongated holes through which the bolts are inserted, so that the fixing position can be finely adjusted. In the contact section 72A3, the lower end of the lower surface of the support beam 18 is in contact with the upper surface of the bottom horizontal steel member 72A, and a stopper 72A4 is provided on the upper surface of the bottom horizontal steel member 72A in the vicinity of this, to prevent the lower fireproof plate block 24 from sliding in a direction that reduces its inclination with respect to the horizontal plane. Furthermore, the upper end 24A1 of the upper surface 24A of the lower fire-resistant plate block 24 is in contact with the contact portion 12B1 near the center of the lower end surface 12B of the upper fire-resistant plate block 12 located directly above it.

[0070] When replacing the lower fireproof plate block 24, after releasing the bolt connection at the support portion 72C2, rotate it upward around the contact portion 12B1 as shown in Figure 8, lay it horizontally, and then pull it out horizontally to remove it. When pulling it out horizontally to remove it, for example, a forklift can be used. The lower fireproof plate block 24 and the support beam 18 are removed as a single unit. Although not shown in Figure 8, depending on the angle and dimensions at which the upper fireproof plate block 12 is mounted, it is also possible to rotate the lower fireproof plate block 24 downward around the lower end of its underside (rotating it downward around the contact portion 72A3), lay it horizontally, and then pull it out horizontally to remove it.

[0071] In the rocket launch deflection fireproof plate 20 according to this second embodiment, by adopting the arrangement configurations 2-1, 2-2, and 2-3 described above, the direction of the combustion gases during rocket launch can be smoothly changed to a direction along the flue even with only flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 24). In the rocket launch deflection fireproof plate 20 according to this second embodiment, the fireproof plate portion is composed only of inexpensive flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 24). Furthermore, the upper fireproof member 11 and the lower fireproof member 23 can be attached to the frame structure 72 by bolting, and no special attachment method is used.

[0072] Therefore, the rocket launch deflection fireproof plate 20 according to this second embodiment has reduced costs both when newly installed and when replaced.

[0073] (3) Third Embodiment Figure 9 is a side view of the rocket launch deflection fireproof plate 30 according to the third embodiment of the present invention, Figure 10 is an enlarged side view showing the adjacent portion of the upper fireproof plate block 12 and the lower fireproof plate block 34 and the surrounding area, and Figure 11 is a schematic side view showing the situation when the lower fireproof plate block 34 of the rocket launch deflection fireproof plate 30 according to the third embodiment of the present invention is removed.

[0074] In the second embodiment, the lower fireproof plate block 24 of the rocket launch deflection fireproof plate 20 was configured such that the upper end 24A1 of the upper surface 24A of the lower fireproof plate block 24 abutted against the contact portion 12B1 near the center of the lower end surface 12B of the upper fireproof plate block 12 located directly above it, as shown in Figure 7. However, in the rocket launch deflection fireproof plate 30 of this third embodiment, the upper end 34A1 of the upper surface 34A of the lower fireproof plate block 34 abuts against the lower end 12B2 (contact portion 12B3) of the lower end surface 12B of the upper fireproof plate block 12 located directly above it. As for other configurations, the rocket launch deflection fireproof plate 30 of this third embodiment is the same as the rocket launch deflection fireproof plate 20 of the second embodiment, so corresponding members and parts are generally denoted by the same reference numerals and explanations are generally omitted. Furthermore, since the lower fireproof plate block 34 is the same as the lower fireproof plate block 24 of the rocket launch deflection fireproof plate 20 according to the second embodiment, the explanation of the lower fireproof plate block 34 will be omitted as appropriate, and the points that have been omitted will be replaced by the explanation of the lower fireproof plate block 24 in "(2) Second Embodiment" above.

[0075] A rocket launch deflection fireproof plate 30 according to a third embodiment of the present invention comprises an upper fireproof member 11, a lower fireproof member 33, and a steel frame structure 72 that fixes the upper fireproof member 11 and the lower fireproof member 33 at a predetermined inclination angle and supports them from below.

[0076] The lower fire-resistant member 33 is composed of a lower fire-resistant plate block 34 and a support beam 18. The support beam 18 is attached to the lower surface of the lower fire-resistant plate block 34, and the lower fire-resistant plate block 34 and the support beam 18 are integrated together.

[0077] The lower fireproof plate block 34 works in cooperation with the upper fireproof plate block 12 to receive the combustion gases during rocket launch and direct the combustion gases in a predetermined direction (towards the flue).

[0078] As shown in Figure 9, the upper fire-resistant plate block 12 and the lower fire-resistant plate block 34 are attached to the frame structure 72 and arranged such that the lower fire-resistant plate block 34, located below, has a smaller angle of inclination with respect to the horizontal plane than the upper fire-resistant plate block 12, located above (hereinafter sometimes referred to as arrangement configuration 3-1).

[0079] Furthermore, as shown in Figure 10, the upper fire-resistant plate block 12 and the lower fire-resistant plate block 34 are attached to the frame structure 72 and arranged such that a surface 12A1, which is virtually a parallel extension of the upper surface 12A of the upper fire-resistant plate block 12, intersects with the upper surface 34A of the lower fire-resistant plate block 34, which is located diagonally below (hereinafter, this may be referred to as arrangement configuration 3-2).

[0080] Furthermore, as shown in Figure 10, the upper end 34A1 of the upper surface 34A of the lower fireproof plate block 34 is located below the lower end of the upper fireproof plate block 12, and when viewed from above in the vertical direction, there is no gap between the upper fireproof plate block 12 and the lower fireproof plate block 34 (hereinafter sometimes referred to as arrangement configuration 3-3).

[0081] Therefore, the combustion gases during rocket launch flow smoothly down along the upper surface 12A of the upper fireproof plate block 12 and the upper surface 34A of the lower fireproof plate block 34, changing their direction of flow towards the flue and proceeding into the flue. In the rocket launch deflection fireproof plate 30 according to this third embodiment, by adopting the arrangement configurations 3-1, 3-2, and 3-3 described above, the direction of the combustion gases during rocket launch can be smoothly changed to a direction along the flue even with only flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 34).

[0082] The support beam 18 has the role of attaching the lower fire-resistant plate block 34 to the frame structure 72 and fixing the position of the lower fire-resistant plate block 34. For example, a steel material with an H-shaped cross-section can be used for the support beam 18. The support beam 18 can be attached to the frame structure 72 in a detachable manner using bolts or the like.

[0083] The support beam 18 attached to the lower surface of the lower fireproof plate block 34 is supported by the frame structure 72 at the lower support portion 72C3 of the diagonal steel member 72C and the contact portion 72A5 with the bottom horizontal steel member 72A. The lower fireproof plate block 34 is positioned such that the angle of inclination of the lower fireproof plate block 34 with respect to the horizontal plane is smaller than the angle of inclination of the upper fireproof plate block 12 with respect to the horizontal plane (see arrangement configuration 3-1, Figure 9), and the surface 12A1 obtained by virtually extending the upper surface 12A of the upper fireproof plate block 12 parallel to intersects the upper surface 34A of the lower fireproof plate block 34 which is located diagonally below (see arrangement configuration 3-2, Figure 10). The upper end 34A1 of the upper surface 34A of the lower fireproof plate block 34 is located below the lower end of the upper fireproof plate block 12, and when viewed from above in the vertical direction, there is no gap between the upper fireproof plate block 12 and the lower fireproof plate block 34 (see arrangement configuration 3-3 and Figure 10). In the support section 72C3, the upper end of the lower surface of the support beam 18 attached to the lower surface of the lower fireproof plate block 34 is detachably connected to the inclined steel member 72C with bolts via a predetermined jig. The predetermined jig is provided with elongated holes through which the bolts are inserted, so that the fixing position can be finely adjusted. In the contact section 72A5, the lower end of the lower surface of the support beam 18 is in contact with the upper surface of the bottom horizontal steel member 72A, and a stopper 72A6 is provided on the upper surface of the bottom horizontal steel member 72A in the vicinity of this, to prevent the lower fireproof plate block 34 from sliding in a direction that reduces its inclination with respect to the horizontal plane. Furthermore, the upper end 34A1 of the upper surface 34A of the lower fireproof plate block 34 is in contact with the lower end 12B2 (contact portion 12B3) of the lower end surface 12B of the upper fireproof plate block 12 located directly above it.

[0084] In the rocket launch deflection fireproof plate 30 according to this third embodiment, the upper end 34A1 of the upper surface 34A of the lower fireproof plate block 34 is in contact with the lower end 12B2 (contact portion 12B3) of the lower end surface 12B of the upper fireproof plate block 12 located directly above it. Therefore, even if the lower fireproof plate block 34 is rotated downward around the contact portion 72A5, the lower fireproof plate block 34 does not interfere with the upper fireproof plate block 12. For this reason, when replacing the lower fireproof plate block 34 of the rocket launch deflection fireproof plate 30 according to this third embodiment, after releasing the bolt connection at the support portion 72C3, as shown in Figure 11, the lower fireproof plate block 34 can be rotated downward around the contact portion 72A5 to lay horizontally, and then pulled out horizontally for removal. The lower fireproof plate block 34 and the support beam 18 are removed as a single unit. Furthermore, if rotating the lower fireproof plate block 34 downwards around the contact portion 72A5 may cause interference with the support beam 16 attached to the lower surface of the upper fireproof plate block 12, the end of the support beam 16 that may cause interference should be cut diagonally in advance to prevent interference. As mentioned above, the lower part of the diagonal steel member 72C of the frame structure 72 is configured to be detachable, and when rotating the lower fireproof plate block 34 downwards to lay it horizontally, it is removed from the frame structure 72.

[0085] In the rocket launch deflection fireproof plate 30 according to this third embodiment, by adopting the arrangement configurations 3-1, 3-2, and 3-3 described above, the direction of the combustion gases during rocket launch can be smoothly changed to a direction along the flue even with only flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 34). In this third embodiment, the rocket launch deflection fireproof plate 30 is composed only of inexpensive flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 34). Furthermore, the upper fireproof member 11 and the lower fireproof member 33 can be attached to the frame structure 72 by bolting, and no special attachment method is used.

[0086] Therefore, the rocket launch deflection fireproof plate 30 according to this third embodiment has reduced costs both when newly installed and when replaced.

[0087] (4) Fourth Embodiment Figure 12 is a side view of the rocket launch deflection fireproof plate 40 according to the fourth embodiment of the present invention, Figure 13 is an enlarged side view showing the adjacent portion of the upper fireproof plate block 12 and the lower fireproof plate block 44 and the surrounding area, and Figure 14 is a schematic side view showing the situation when the lower fireproof plate block 44 of the rocket launch deflection fireproof plate 40 according to the fourth embodiment of the present invention is removed.

[0088] In the second embodiment, the lower fireproof plate block 24 of the rocket launch deflection fireproof plate 20 was configured such that the upper end 24A1 of the upper surface 24A of the lower fireproof plate block 24 abutted against the contact portion 12B1 near the center of the lower end surface 12B of the upper fireproof plate block 12 located directly above it, as shown in Figure 7. However, in the rocket launch deflection fireproof plate 40 according to this fourth embodiment, as shown in Figure 13, the lower end 12B2 of the lower end surface 12B of the upper fireproof plate block 12 located directly above it abuts against the contact portion 44A1 on the upper surface 44A of the lower fireproof plate block 44. Furthermore, in order to realize this configuration, the lower part of the diagonal steel member 72C of the frame structure 72 was cut to become a diagonal steel member 80C, and a new lower auxiliary structure 80E was provided to support the lower fireproof plate block 44, thereby configuring a frame structure 80 that supports the rocket launch deflection fireproof plate 40 according to this fourth embodiment at a predetermined inclination angle. Furthermore, the lower end of the support beam 16 was cut diagonally to match the lower end surface of the diagonal steel member 80C, thereby forming a support beam 16A that is attached to the lower surface of the upper fireproof plate block 12. Regarding the other components, the rocket launch deflection fireproof plate 40 according to this fourth embodiment is the same as the rocket launch deflection fireproof plate 20 according to the second embodiment. Therefore, the same reference numerals are used for corresponding members and parts, and their descriptions are generally omitted. Also, the lower fireproof plate block 44 is the same as the lower fireproof plate block 24 of the rocket launch deflection fireproof plate 20 according to the second embodiment. Therefore, the description of the lower fireproof plate block 44 is omitted as appropriate, and any points omitted are replaced by the description of the lower fireproof plate block 24 in "(2) Second Embodiment" above.

[0089] A rocket launch deflection fireproof plate 40 according to the fourth embodiment of the present invention comprises an upper fireproof member 41, a lower fireproof member 43, and a steel frame structure 80 that fixes the upper fireproof member 41 and the lower fireproof member 43 at a predetermined inclination angle and supports them from below.

[0090] The upper fire-resistant member 41 is composed of an upper fire-resistant plate block 12 and a support beam 16A. The support beam 16A is attached to the lower surface of the upper fire-resistant plate block 12, and the upper fire-resistant plate block 12 and the support beam 16A are integrated. As mentioned above, the lower end of the support beam 16A is cut diagonally to match the lower end surface of the diagonal steel member 80C of the frame structure 80.

[0091] The lower fire-resistant member 43 is composed of a lower fire-resistant plate block 44 and a support beam 18. The support beam 18 is attached to the lower surface of the lower fire-resistant plate block 44, and the lower fire-resistant plate block 44 and the support beam 18 are integrated together.

[0092] As shown in Figure 12, the frame structure 80 is a steel structure comprising a bottom horizontal steel member 80A, a vertical steel member 80B, a diagonal steel member 80C, an intermediate horizontal steel member 80D, and a lower auxiliary structure 80E, and plays the role of supporting the upper fire-resistant plate block 12 and the lower fire-resistant plate block 44 at a predetermined inclination angle. The lower auxiliary structure 80E has a diagonal steel member 80E1 having an inclination angle corresponding to the required inclination angle for the lower fire-resistant plate block 44. For each of the aforementioned members 80A, 80B, 80C, 80D, and 80E of the frame structure 80, for example, steel members with an H-shaped cross-section can be used.

[0093] The lower fireproof plate block 44 works in cooperation with the upper fireproof plate block 12 to receive the combustion gases during rocket launch and direct the combustion gases in a predetermined direction (towards the flue).

[0094] As shown in Figure 12, the upper fire-resistant plate block 12 and the lower fire-resistant plate block 44 are attached to the frame structure 80 and arranged such that the lower fire-resistant plate block 44, located below, has a smaller angle of inclination with respect to the horizontal plane than the upper fire-resistant plate block 12, located above (hereinafter sometimes referred to as arrangement configuration 4-1).

[0095] Furthermore, as shown in Figure 13, the upper fire-resistant plate block 12 and the lower fire-resistant plate block 44 are attached to the frame structure 80 and arranged such that a surface 12A1, which is virtually a parallel extension of the upper surface 12A of the upper fire-resistant plate block 12, intersects with the upper surface 44A of the lower fire-resistant plate block 44, which is located diagonally below (hereinafter sometimes referred to as arrangement configuration 4-2).

[0096] Furthermore, as shown in Figure 13, the upper end 44A2 of the upper surface 44A of the lower fire-resistant plate block 44 is located below the upper fire-resistant plate block 12, and when viewed from above in the vertical direction, there is no gap between the upper fire-resistant plate block 12 and the lower fire-resistant plate block 44 (hereinafter sometimes referred to as arrangement configuration 4-3).

[0097] Therefore, the combustion gases during rocket launch flow smoothly down along the upper surface 12A of the upper fireproof plate block 12 and the upper surface 44A of the lower fireproof plate block 44, changing their direction of flow towards the flue and proceeding into the flue. In the rocket launch deflection fireproof plate 40 according to this fourth embodiment, by adopting the arrangement configurations 4-1, 4-2, and 4-3 described above, the direction of the combustion gases during rocket launch can be smoothly changed to a direction along the flue even with only flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 44).

[0098] The support beam 18 has the role of fixing the position of the lower fire-resistant plate block 44 by attaching it to the diagonal steel member 80E1 of the lower auxiliary structure 80E of the frame structure 80. For example, a steel member with an H-shaped cross-section can be used for the support beam 18. The support beam 18 can be attached to the diagonal steel member 80E1 in a detachable manner using bolts or the like.

[0099] The support beam 18 attached to the lower surface of the lower fireproof plate block 44 is attached to and supported by the diagonal steel member 80E1 of the lower auxiliary structure 80E. The lower fireproof plate block 44 is positioned such that the angle of inclination of the lower fireproof plate block 44 with respect to the horizontal plane is smaller than the angle of inclination of the upper fireproof plate block 12 with respect to the horizontal plane (see arrangement configuration 4-1, Figure 12), and the surface 12A1, which is virtually a parallel extension of the upper surface 12A of the upper fireproof plate block 12, intersects the upper surface 44A of the lower fireproof plate block 44, which is located diagonally below (see arrangement configuration 4-2, Figure 13). Furthermore, the lower end 12B2 of the lower end surface 12B of the upper fireproof plate block 12, which is located directly above, abuts against the contact portion 44A1 on the upper surface 44A of the lower fireproof plate block 44. The upper end 44A2 of the upper surface 44A of the lower fireproof plate block 44 is located below the upper fireproof plate block 12, and when viewed from above in the vertical direction, there is no gap between the upper fireproof plate block 12 and the lower fireproof plate block 44 (see arrangement configuration 4-3 and Figure 13).

[0100] In the rocket launch deflection fireproof plate 40 according to this fourth embodiment, the lower end 12B2 of the lower end surface 12B of the upper fireproof plate block 12, which is located directly above, is in contact with the contact portion 44A1 on the upper surface 44A of the lower fireproof plate block 44. As shown in Figure 14, the lower fireproof plate block 44 can be pulled out diagonally upward while maintaining its inclination angle. Therefore, when replacing the lower fireproof plate block 44 of the rocket launch deflection fireproof plate 40 according to this fourth embodiment, after releasing the bolt connection to the diagonal steel member 80E1, the lower fireproof plate block 44 is pulled out diagonally upward while maintaining its inclination angle, as shown in Figure 14. The lower fireproof plate block 44 and the support beam 18 are removed as a single unit.

[0101] In the rocket launch deflection fireproof plate 40 according to this fourth embodiment, by adopting the arrangement configurations 4-1, 4-2, and 4-3 described above, the direction of the combustion gases during rocket launch can be smoothly changed to a direction along the flue even with only flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 44). The rocket launch deflection fireproof plate 40 according to this fourth embodiment is composed only of inexpensive flat fireproof plates (upper fireproof plate block 12 and lower fireproof plate block 44). Furthermore, the upper fireproof member 41 and the lower fireproof member 43 can be attached to the frame structure 80 by bolting, and no special attachment method is used.

[0102] Therefore, the rocket launch deflection fireproof plate 40 according to this fourth embodiment has reduced costs both when newly installed and when replaced.

[0103] (5) Supplement In the embodiments described above, the upper fire-resistant member 11 is provided with a support beam 16, the upper fire-resistant member 41 is provided with a support beam 16A, and the lower fire-resistant members 13, 23, 33, and 43 are provided with a support beam 18. However, the provision of support beams 16, 16A, and 18 is not mandatory, and the upper fire-resistant plate block 12 and the lower fire-resistant plate blocks 14, 24, 34, and 44 may be connected to the frame structures 72 and 80 by other means without using support beams 16, 16A, and 18. Alternatively, the upper fire-resistant plate block 12 and the lower fire-resistant plate blocks 14, 24, 34, and 44 may be directly connected to the frame structures 72 and 80. In this case, the upper fire-resistant members 11 and 41 will consist only of the upper fire-resistant plate block 12, and the lower fire-resistant members 13, 23, 33, and 43 will consist only of the lower fire-resistant plate blocks 14, 24, 34, and 44. [Explanation of Symbols]

[0104] 10, 20, 30, 40... Fire deflection plates for rocket launches 11, 41... Upper fire-resistant member 12…Upper fire-resistant plate block 12A...Upper surface of upper fireproof plate block 12 12A1…A surface that is virtually extended parallel to the upper surface 12A. 12B...Lower end surface of upper fireproof plate block 12 12B1... Contact area near the center of the lower end surface 12B 12B2...Lower end of lower end surface 12B 12B3... Contact portion at the lower end of the lower end surface 12B 13, 23, 33, 43... Lower fire-resistant members 14, 24, 34, 44... Lower fire-resistant plate blocks 14A...Upper surface of lower fire-resistant plate block 14 14A1...Upper end of top surface 14A 14B...Underside of lower fireproof plate block 14 14C... Inclined surface adjacent to the upper fireproof plate block 12 16, 16A, 18...Support beam 24A...Upper surface of lower fire-resistant plate block 24 24A1...Upper end of top surface 24A 34A...Upper surface of lower fire-resistant plate block 34 34A1...Upper end of top surface 34A 44A...Upper surface of lower fire-resistant plate block 44 44A1... Contact portion on the upper surface 44A 44A2…Upper end of top surface 44A 72, 80…Frame structure 72A, 80A…bottom horizontal steel material 72A1, 72A3, 72A5...Contact part 72A2, 72A4, 72A6... Stopper 72B, 80B... Vertical steel 72C, 80C... Diagonal steel 72C1, 72C2, 72C3...Support part 72D, 80D…Intermediate horizontal steel material 80E...Lower auxiliary structure 80E1…Diagonal steel members of the lower auxiliary structure 80E 100... Rocket launch facilities 102... Rocket 104... Launch pad 106…Flute 108, 110...Flame deflection plate 112...Upper deflection plate 112a, 114a...Base 112b, 114b... thermal insulation materials Sections 112c, 114c... 114…Lower bias plate 116… axis 118…Fixed part 120… flue z…gap

Claims

1. A rocket having multiple fire-resistant members and support members that support the multiple fire-resistant members at a predetermined angle A deflection fireproof plate for firing, The plurality of fire-resistant members include a first fire-resistant member having a predetermined thickness and having an upper surface, a lower surface, and side surfaces, and a second fire-resistant member having a predetermined thickness and having an upper surface, a lower surface, and side surfaces, and the upper surfaces of the first fire-resistant member and the second fire-resistant member are supported from below by the support members so that they are inclined at a predetermined angle with respect to the horizontal plane and are adjacent to each other. The first fireproof member is positioned above the second fireproof member and on the support member such that it has a different angle of inclination with respect to the horizontal plane than the second fireproof member, and the surface of the first fireproof member that is virtually parallel to the upper surface intersects with the upper surface of the second fireproof member, and when viewed from above in the vertical direction, there is no gap between the first fireproof member and the second fireproof member, and the second fireproof member is detachable from the support member and fixed to the support member so that it can be replaced while the first fireproof member remains fixed to the support member by rotating it around the highest or lowest point of the second fireproof member.

2. A method for replacing a rocket launch deflection fireproof plate according to claim 1, The process of raising the second fire-resistant member by rotating it around the lowest point as the center of rotation, The removal process involves lifting and removing the second fire-resistant member that was erected in the aforementioned erection process, A method for replacing a rocket launch deflection fireproof plate, characterized by having the following features.

3. A method for replacing a rocket launch deflection fireproof plate according to claim 1, A rotation step in which the second fire-resistant member is rotated so that it becomes horizontal with the lowest point of the member as the center of rotation, A removal step is to remove the second fire-resistant member that has been made horizontal in the rotation step, A method for replacing a rocket launch deflection fireproof plate, characterized by having the following features.

4. A method for replacing a rocket launch deflection fireproof plate according to claim 1, A rotation step in which the second fire-resistant member is rotated so that it becomes horizontal with the highest point of the member as the center of rotation, A removal step is to remove the second fire-resistant member that has been made horizontal in the rotation step, A method for replacing a rocket launch deflection fireproof plate, characterized by having the following features.

Images