Deflecting refractory plate for rocket launching and method of replacing deflecting refractory plate for rocket launching

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 fireproof plate for rocket launch and a method for replacing the deflection fireproof plate for rocket launch. In this application, the replacement of the deflection fireproof plate for rocket launch includes both the case of replacing the entire deflection fireproof plate for rocket launch and the case of replacing a part of the deflection fireproof plate for rocket launch. [Background technology]

[0002] The combustion gas generated during the launch of a rocket is a gaseous fluid with an extremely high temperature, and in the rocket launch facility 100, as shown in FIG. 15 (FIG. 6 of Patent Document 1), a flue 106 for releasing the combustion gas generated during the launch of the rocket 102 is provided below the launch pad 104 of the rocket 102 to be launched. In order to allow the combustion gas generated during the launch of the rocket 102 to escape smoothly into the flue 106, a flame deflector 108 for changing the direction of the combustion gas generated during the launch of the rocket 102 to a direction along the flue 106 is provided at a position in the flue 106 directly below the rocket 102 to be launched. As shown in FIG. 15, the flame deflector 108 is provided at an incline with respect to the horizontal plane, and the lower part of the flame deflector 108 is curved in an arc shape so that the angle of the inclined surface is gradually reduced to an angle close to the horizontal plane, and the direction of the combustion gas generated during the launch of the rocket 102 is smoothly changed to a direction along the flue 106.

[0003] On the other hand, the flame deflector 108 is located directly below the launched rocket 102 and is placed in an extremely harsh environment where it is directly exposed to the combustion gases when the rocket 102 is launched. After a certain amount of use, it will require maintenance or replacement for damage, etc.; however, the flame deflector 108 is about 5 m high and requires scaffolding for maintenance work, which is time-consuming.

[0004] As a technology that is considered to be able to deal with this problem, there is a technology described in Patent Document 1, as shown in Figures 16 and 17 (Figures 1 and 2 of Patent Document 1). In this technology, a flame deflector 110 is divided into an upper deflector 112 and a lower deflector 114, and the upper deflector 112 is provided so as to be able to swing around a shaft 116 provided near the flue opening between a position where it blocks the flue opening (see Figure 16) and a position where it engages with the lower deflector 114 (see Figure 17), and the lower deflector 114 is fixed to the flue 120 by a fixing part 118. The upper deflector 112 is made of a base 112a and a heat insulating material 112b, and a step 112c is provided at the end opposite to the shaft 116 by cutting out the base 112a side. The lower deflector 114 is composed of a base 114a and a heat insulating material 114b, and is fixed at an inclination diagonally upward, with a step 114c at the upper end where the heat insulating material 114b side is cut out. The material of the bases 112a and 114a is not described in Patent Document 1, so it is assumed that concrete is used as in the prior art described in the [Prior Art] column of Patent Document 1. When the rocket is launched, the upper deflector 112 swings in the direction of the arrow in Figure 16, and the upper deflector 112 and the lower deflector 114 are engaged with each other at the step portions 112c and 114c.

[0005] However, in the flame deflector 110 described in Patent Document 1, even if the upper deflector 112 is engaged with the lower deflector 114, it is difficult to eliminate the gap between the upper deflector 112 and the lower deflector 114. In particular, in the flame deflector 110 described in Patent Document 1, the upper deflector 112 is configured to be swingable, and even if the upper deflector 112 is engaged with the lower deflector 114, it is considered that a certain amount of gap will inevitably remain between the upper deflector 112 and the lower deflector 114.

[0006] In response to this, paragraph 0008 of Patent Document 1 states that steps 112c, 114c are provided at the engagement portion between upper deflection plate 112 and lower deflection plate 114, thereby preventing the rocket's combustion exhaust gas from leaking through the joint between upper deflection plate 112 and 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 Summary of the Invention [Problem to be solved by the invention]

[0008] However, as shown in Figures 16 and 17, the gaps that occur at steps 112c, 114c at the engagement portion penetrate straight through the insulation materials 112b, 114b in the thickness direction to reach bases 112a, 114a of steps 112c, 114c, and it is believed that bases 112a, 114a (which are thought to be concrete) that form steps 112c, 114c will be directly affected by the combustion gases when rocket 102 is launched, and will deteriorate and be damaged.

[0009] As described in the [Function] column of paragraph 0006 of Patent Document 1 and the [Effect of the Invention] column of paragraph 0012 of Patent Document 1, Patent Document 1 is considered to mainly consider the installation of heat insulating material as a maintenance work, but when deterioration and damage progress in the base (presumably concrete) forming the steps 112c and 114c, it is considered that it is necessary to replace the entire flame deflector 110, rather than just replacing the heat insulating material. The flame deflector 110 described in Patent Document 1 needs to be provided with the steps 112c and 114c, and the upper deflector 112 needs to 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 deflector 114, centered on the axis 116 provided near the flue opening, and it is considered that replacing the entire flame deflector 110 would be costly and laborious.

[0010] The present invention has been made in consideration of the above points, and its objective is to provide a deflection fireproof plate for rocket launch and a method for replacing a deflection fireproof plate for rocket launch which is configured to be divided into upper and lower halves, but which reduces the adverse effects caused by the downward flow of combustion gases and allows the fireproof plate to be replaced easily and at low cost. [Means for solving the problem]

[0011] The present invention is an invention that solves the above-mentioned problems, and provides a deflection fireproof plate for rocket launch and a method for replacing the deflection fireproof plate for rocket launch as described below.

[0012] That is, a first aspect of the deflection fireproof plate for rocket launch according to the present invention is a deflection fireproof plate for rocket launch having a plurality of fireproof members and a support member that supports the plurality of fireproof members at a predetermined angle, the plurality of fireproof members including a first fireproof member having an upper surface, a lower surface, and a side surface and a predetermined thickness, and a second fireproof member having an upper surface, a lower surface, and a side surface and a predetermined thickness, the upper surface 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 disposed on the upper side relative to the second fireproof member, and is disposed on the support member so that the inclination angle with respect to the horizontal plane is different from that of the second fireproof member, and a plane obtained by virtually extending the upper surface of the first fireproof member in parallel with the upper surface of the second fireproof member intersects 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, the interpretation of the terms "up" and "down" in relation to the present invention and the deflection fireproof plate for rocket launch according to the embodiment of the present invention and its constituent members shall be based on the state in which the deflection fireproof plate for rocket launch according to the embodiment of the present invention is actually used. The same applies to other descriptions in this application.

[0014] In addition, the state where "there is no gap between the first fireproof member and the second fireproof member when viewed from above in the vertical direction" also includes a state where even if there is a gap between the first fireproof member and the second fireproof member, the gap cannot be visually recognized when viewed from above in the vertical direction. Similar descriptions in other parts of this application shall be interpreted in the same manner.

[0015] A second aspect of the deflection fireproof plate for rocket launch of the present invention is the deflection fireproof plate for rocket launch of the first aspect, wherein a first side portion of the side of the first fireproof member that faces the second fireproof member and a second side portion of the side of the second fireproof member that faces the first side portion are arranged with a predetermined gap between them.

[0016] A third aspect of the deflection fireproof plate for rocket launch according to the present invention is the deflection fireproof plate for rocket launch of the second aspect, wherein the second fireproof member has an approximately rectangular prism shape and a portion of the upper surface side of the portion adjacent to the adjacent first fireproof member is cut out from the rectangular prism.

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

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

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

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

[0021] An eighth aspect of the deflection fireproof plate for rocket launch according to the present invention is a deflection fireproof plate for rocket launch according to any one of the first to seventh aspects, wherein each of the plurality of fireproof members includes a fireproof plate block and a support beam that fixes the position of the fireproof plate block on the support member, and the support beam is connected to the underside of the fireproof plate block.

[0022] A ninth aspect of the deflection fireproof plate for rocket launch according to the present invention is the eighth aspect of the deflection fireproof plate for rocket launch, wherein the plurality of fireproof members are removably fixed to the support member at a predetermined inclination angle.

[0023] A first aspect of the method for replacing a deflection fireproof plate for rocket launch according to the present invention is a method for replacing a deflection fireproof plate for rocket launch according to any one of the first to third aspects, characterized in that it includes a raising step of raising the second fireproof member around the lowest position as the center of rotation, and a removal step of lifting and removing the second fireproof member raised in the raising step.

[0024] A second aspect of the method for replacing a deflection fire-resistant plate for rocket launch according to the present invention is a method for replacing a deflection fire-resistant plate for rocket launch according to any one of the first to third and fifth aspects, characterized in that it includes a rotation step of rotating the second fire-resistant member so that it is horizontal, with the lowest position of the second fire-resistant member as the center of rotation, and a removal step of removing the second fire-resistant member that has been horizontalized in the rotation step.

[0025] A third aspect of the method for replacing a deflection fire-resistant plate for rocket launch according to the present invention is a method for replacing a deflection fire-resistant plate for rocket launch according to the first or fourth aspect, characterized in that it includes a rotation step of rotating the second fire-resistant member so that it is horizontal, with the highest part of the member as the center of rotation, and a removal step of removing the second fire-resistant member that has been horizontalized in the rotation step.

[0026] A fourth aspect of the method for replacing a deflection fireproof plate for rocket launch according to the present invention is a method for replacing a deflection fireproof plate for rocket launch according to the first or sixth aspect, characterized in that the second fireproof member is removed by pulling it diagonally upward while maintaining the inclination angle. Effect of the Invention

[0027] According to the present invention, it is possible to provide a deflection fireproof plate for rocket launch, which is configured to be divided into upper and lower halves, but which suppresses the adverse effects of the downward flow of combustion gas, and which allows the fireproof plate to be replaced easily and at low cost, and a method for replacing the deflection fireproof plate for rocket launch. [Brief description of the drawings]

[0028] [Figure 1] 1 is a side view of a deflection fireproof plate 10 for rocket launch according to a first embodiment of the present invention; [Diagram 2] FIG. 1 is a view of the upper fireproof block 12 and the lower fireproof block 14 of the rocket launch deflection fireproof block 10 according to the first embodiment, viewed from above in the vertical direction (from the direction of the arrow II in FIG. 1). [Diagram 3] FIG. 1 is an enlarged side view showing the adjacent area between the upper fireproof block 12 and the lower fireproof block 14 and the surrounding area. [Figure 4] Side view of lower fireproof block 14 [Diagram 5] FIG. 1 is a side view showing a schematic diagram of a state in which a lower fireproof block 14 of a deflection fireproof plate 10 for rocket launch according to a first embodiment of the present invention is removed. [Figure 6]2 is a side view of a deflection fireproof plate 20 for rocket launch according to a second embodiment of the present invention; [Figure 7] FIG. 1 is an enlarged side view showing the adjacent area between the upper fireproof block 12 and the lower fireproof block 24 and the surrounding area. [Figure 8] FIG. 11 is a side view showing a schematic diagram of a state in which 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. [Figure 9] 3 is a side view of a deflection fireproof plate 30 for rocket launch according to a third embodiment of the present invention; [Figure 10] FIG. 1 is an enlarged side view showing the adjacent area between the upper fireproof block 12 and the lower fireproof block 34 and the surrounding area. [Figure 11] FIG. 11 is a side view showing a schematic diagram of a state in which the lower fireproof plate block 34 of the deflection fireproof plate 30 for rocket launch according to the third embodiment of the present invention is removed. [Figure 12] 4 is a side view of a deflection fireproof plate 40 for rocket launch according to a fourth embodiment of the present invention. [Figure 13] FIG. 1 is an enlarged side view showing the adjacent area between the upper fireproof block 12 and the lower fireproof block 44 and the surrounding area. [Figure 14] FIG. 11 is a side view showing a schematic diagram of a state in which a lower fireproof plate block 44 of a deflection fireproof plate 40 for rocket launch according to a fourth embodiment of the present invention is removed. [Figure 15] FIG. 1 shows the prior art described in Patent Document 1. [Figure 16] A side cross-sectional view of a flame deflector of a rocket launcher 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 and lower deflection plates are engaged in a flame deflector of a rocket launcher according to an embodiment of the invention described in Patent Document 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0030] (1) First embodiment FIG. 1 is a side view of the deflection fireproof plate 10 for rocket launch according to the first embodiment of the present invention, FIG. 2 is a view of the upper fireproof plate block 12 and the lower fireproof plate block 14 of the deflection fireproof plate 10 for rocket launch according to the first embodiment of the present invention from above in the vertical direction (from the direction of arrow II in FIG. 1), FIG. 3 is an enlarged side view showing the adjacent portions of the upper fireproof plate block 12 and the lower fireproof plate block 14 and their surrounding areas, FIG. 4 is a side view of the lower fireproof plate block 14, and FIG. 5 is a side view showing a schematic diagram of the situation when removing the lower fireproof plate block 14 of the deflection fireproof plate 10 for rocket launch according to the first embodiment of the present invention.

[0031] The deflection fireproof plate 10 for rocket launch 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 board block 12 and a support beam 16, and the support beam 16 is attached to the underside of the upper fire-resistant board block 12, so that the upper fire-resistant board block 12 and the support beam 16 are integrated.

[0033] The lower fire-resistant member 13 is composed of a lower fire-resistant board block 14 and a support beam 18, and the support beam 18 is attached to the underside of the lower fire-resistant board block 14, so that the lower fire-resistant board block 14 and the support beam 18 are integrated.

[0034] The upper fireproof block 12 and the lower fireproof block 14 have the role of receiving the combustion gases generated when the rocket is launched and directing the combustion gases in a specified direction (in the direction of the flue).

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

[0036] Furthermore, as shown in FIG. 3, the upper fire-resistant board block 12 and the lower fire-resistant board block 14 are attached to the frame structure 72 and arranged so that a surface 12A1, which is an imaginary parallel extension of the upper surface 12A of the upper fire-resistant board block 12, intersects with the upper surface 14A of the lower fire-resistant board 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 board block 14 is located below the lower end portion of the upper fire-resistant board block 12, and when viewed from above in the vertical direction, there is no gap between the upper fire-resistant board block 12 and the lower fire-resistant board block 14 (hereinafter, this may be referred to as arrangement configuration 1-3).

[0038] Therefore, the combustion gas during rocket launch smoothly flows down along the upper surface 12A of the upper fireproof block 12 and the upper surface 14A of the lower fireproof block 14, changes its flow direction to the smoke path, and proceeds into the smoke path. Conventionally, as shown in Figs. 15 to 17, the lower part of the deflection fireproof plate for rocket launch (flame deflection plate in Figs. 15 to 17) is curved in an arc shape with gradually gradual inclination angles and finally becomes close to a horizontal plane, so that the direction of the combustion gas during rocket launch is smoothly changed to the direction along the smoke path, but in the deflection fireproof plate for rocket launch 10 according to the first embodiment, by adopting the above-mentioned arrangement configurations 1-1, 1-2, and 1-3, the direction of the combustion gas during rocket launch can be smoothly changed to the direction along the smoke path even with only the flat fireproof plate (upper fireproof block 12 and lower fireproof block 14).

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

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

[0041] 1, the frame structure 72 is a steel structure having bottom horizontal steel members 72A, vertical steel members 72B, diagonal steel members 72C, and intermediate horizontal steel members 72D, and serves to support the upper fire-resistant board block 12 and the lower fire-resistant board block 14 at a predetermined inclination angle. The diagonal steel members 72C have an inclination angle corresponding to the inclination angle required for the upper fire-resistant board block 12. For each of the members 72A, 72B, 72C, and 72D of the frame structure 72, for example, steel members having an H-shaped cross section can be used.

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

[0043] The support beam 18 attached to the underside of the lower fire-resistant board block 14 is supported by the frame structure 72 at the lower support portion 72C1 of the diagonal steel material 72C and the abutment portion 72A1 with the bottom horizontal steel material 72A, and the lower fire-resistant board block 14 is arranged so that the angle of inclination of the lower fire-resistant board block 14 with respect to the horizontal plane is smaller than the angle of inclination of the upper fire-resistant board block 12 with respect to the horizontal plane (see arrangement configuration 1-1, Figure 1), and so that the surface 12A1, which is an imaginary parallel extension of the top surface 12A of the upper fire-resistant board block 12, intersects with the top surface 14A of the lower fire-resistant board block 14 located diagonally downward (see arrangement configuration 1-2, Figure 3). The upper end 14A1 of the upper surface 14A of the lower fireproof block 14 is located below the lower end of the upper fireproof block 12, and there is no gap between the upper fireproof block 12 and the lower fireproof block 14 when viewed from above in the vertical direction (see the above-mentioned arrangement configuration 1-3, Figures 2 and 3). In the support portion 72C1, the upper end of the lower surface of the support beam 18 attached to the lower surface of the lower fireproof block 14 is detachably connected to the diagonal steel material 72C by a bolt via a specified jig. It is preferable that the specified jig has a long hole through which the bolt is inserted so that the fixing position can be finely adjusted. In the abutment portion 72A1, the lower end of the lower surface of the support beam 18 abuts on the upper surface of the bottom horizontal steel material 72A, and a stopper 72A2 is provided near the upper surface of the bottom horizontal steel material 72A to prevent the lower fireproof block 14 from sliding in a direction in which the inclination relative to the horizontal plane becomes smaller.

[0044] As shown in Fig. 3 and Fig. 4, the lower fireproof board block 14 has a substantially rectangular parallelepiped shape with the upper surface 14A side of the rectangular parallelepiped cut out in a portion adjacent to the upper fireproof board block 12 directly above, and the shape of the lower fireproof board block 14 seen from the side is a trapezoid with (width x1 of the upper surface 14A of the lower fireproof board block 14) < (width x2 of the lower surface 14B of the lower fireproof board block 14), and the surface adjacent to the upper fireproof board block 12 directly above is an inclined surface 14C, and a gap z is provided between the upper fireproof board block 12 and the lower fireproof board block 14. The size of the gap z is determined so that the lower fireproof board block 14 does not come into contact with the upper fireproof board block 12 located directly above it when the lower fireproof board block 14 is rotated upward or downward around the abutment portion 72A1 between the support beam 18 attached to the lower surface of the lower fireproof board block 14 and the bottom horizontal steel material 72A of the frame structure 72.

[0045] 5, the lower fire-resistant board block 14 does not come into contact with the upper fire-resistant board block 12 located directly above it whether it is rotated upward or downward about the abutment part 72A1 with the bottom horizontal steel material 72A of the framework structure 72, so that when replacing the lower fire-resistant board block 14, it can be rotated upward about the abutment part 72A1 to stand it up and then lifted up for removal, or rotated downward about the abutment part 72A1 to lay it horizontally and then pulled out horizontally for removal. The lower part of the diagonal steel material 72C of the framework structure 72 is configured to be detachable, and the lower part of the diagonal steel material 72C is removed from the framework structure 72 when the lower fire-resistant board block 14 is rotated downward to lay it horizontally.

[0046] Regarding the integration of the upper fireproof board block 12 and the support beam 16, and the integration of the lower fireproof board block 14 and the support beam 18, for example, when the upper fireproof board block 12 and the lower fireproof board block 14 are made of castable refractory material (details will be described later), a stopper may be provided on the upper surfaces of the support beams 16, 18, and the blocks may be integrated when the upper fireproof board block 12 and the lower fireproof board block 14 are formed, respectively. Also, after the upper fireproof board block 12 and the lower fireproof board block 14 are formed, the support beam 16 may be attached to the upper fireproof board block 12 and the support beam 18 may be attached to the lower fireproof board block 14 by anchor bolts or the like.

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

[0048] The material of the upper fireproof block 12 and the lower fireproof block 14 is not particularly limited as long as it can exhibit the necessary fireproof performance and mechanical performance, and specifically, for example, alumina, magnesia, chromium oxide, zirconia, etc. can be used for the upper fireproof block 12 and the lower fireproof block 14 depending on the necessary fireproof performance and mechanical performance. A castable refractory (alumina cement mixed with lightweight aggregate with high fire resistance) can be suitably used for the upper fireproof block 12 and the lower fireproof block 14 because it is easy to handle when manufacturing the upper fireproof block 12 and the lower fireproof block 14, easy to work at the time of repair, and is cost-effective.

[0049] The upper fireproof block 12 and the lower fireproof block 14 are each made of a single material. The term "single material" used here means that each part of the upper fireproof block 12 and the lower fireproof block 14 is made of a material of the same composition, and does not mean to exclude materials made of a mixture of multiple types of fireproof materials. Since the upper fireproof block 12 and the lower fireproof block 14 are made of a single material, repairs when damaged can be made using that single material, and can be easily made without the need to use multiple materials or parts. For example, if the upper fireproof block 12 and the lower fireproof block 14 are made of castable refractory, damaged areas (for example, areas scraped off by combustion gas during rocket launch) can be repaired with the castable refractory. In repairs using castable refractory, the damaged areas (such as scraped off areas) can be filled with castable refractory and the scraped off areas can be filled with castable refractory. If safety can be confirmed, it is also possible to repair the upper and lower fire-resistant block 12 and 14 with fire-resistant materials different from those used to initially form the block and the lower fire-resistant block, respectively.

[0050] The thickness of the upper fireproof block 12 and the lower fireproof block 14 is typically about 150 to 250 mm from the viewpoint of safely receiving the combustion gases during rocket launch. Also, from the viewpoints of ease of handling and fabrication, the size of the upper fireproof block 12 and the lower fireproof block 14 in the in-plane direction is typically about 800 to 4000 mm.

[0051] When the upper fireproof block 12 and the lower fireproof block 14 are made of castable refractory material, the upper fireproof block 12 and the lower fireproof block 14 can be formed by assembling a formwork in a predetermined shape and pouring a castable refractory material into the formwork, and can be produced at low cost. A bottom steel plate (not shown) may be attached to the bottom surface of each of the upper fireproof block 12 and the lower fireproof block 14, and when the upper fireproof block 12 and the lower fireproof block 14 are formed by pouring a castable refractory material into the formwork, the bottom steel plate can also be used as part of the formwork. In this case, a slip-prevention member (not shown) may be attached to the upper surface of the bottom steel plate, and by embedding and installing the slip-prevention member inside the upper fire-resistant board block 12 and the lower fire-resistant board block 14, respectively, the degree of integration between the upper fire-resistant board block 12 and the lower fire-resistant board block 14 and the bottom steel plate can be improved, and the load-bearing capacity of the upper fire-resistant board block 12 and the lower fire-resistant board block 14 can be improved.

[0052] If the upper and lower fire-resistant block 12 and 14 are made of castable refractory material, the damaged areas can be repaired with castable refractory material as described above. However, if the level of damage exceeds the level that can be repaired, either one or both of the upper and lower fire-resistant block 12 and 14 will need to be replaced as necessary.

[0053] As described above, there is nothing interfering above the upper fire-resistant board block 12, so when replacing the upper fire-resistant board block 12, the bolt connections to the diagonal steel members 72C of the support beams 16 are released, and then the upper fire-resistant board block 12 can be lifted and removed. When lifting the upper fire-resistant board block 12, the hook of a lifting device is engaged with a through-hole (not shown) provided in the web portion of the support beams 16, so that the upper fire-resistant board block 12 and the support beams 16 are removed in a state of being integrated together.

[0054] On the other hand, since the upper fireproof block 12 is present diagonally above the lower fireproof block 14, when replacing only the lower fireproof block 14 without replacing the upper fireproof block 12, it is necessary to remove the lower fireproof block 14 by avoiding the upper fireproof block 12. Therefore, when replacing the lower fireproof block 14, after releasing the bolt connection at the support part 72C1, as shown in Fig. 5, the lower fireproof block 14 is rotated upward around the abutment part 72A1 to stand up and then lifted up for removal, or rotated downward around the abutment part 72A1 to lay horizontally and then pulled out horizontally for removal. As described above, the lower part of the diagonal steel material 72C of the frame structure 72 is configured to be detachable, and when the lower fireproof block 14 is rotated downward to lay horizontally, the lower part of the diagonal steel material 72C is removed from the frame structure 72. Since the support beam 18 is attached to the lower surface of the lower fireproof board block 14, even if the lower fireproof board block 14 is laid horizontally, a gap is formed between the lower surface of the lower fireproof board block 14 and the floor surface of the flue by the height of the support beam 18. Therefore, when pulling out the lower fireproof board block 14 horizontally to remove it, this gap can be used to remove it with a forklift or the like. When rotating the lower fireproof board block 14 upward around the abutment portion 72A1 as the center and then lifting it up for removal, the hook of a lifting device is engaged with a through hole (not shown) provided in the web portion of the support beam 18 and lifted up. In both cases where the lower fireproof board block 14 is lifted up after being lifted up and removed after being raised up, and where the lower fireproof board block 14 is pulled out horizontally to remove it, the lower fireproof board block 14 and the support beam 18 are removed in a state of being integrated together.

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

[0056] As described above, with respect to the deflection fireproof plate 10 for rocket launch according to the first embodiment, replacement of only one of the upper fireproof plate block 12 and the lower fireproof plate block 14 or replacement of both can be easily performed.

[0057] In addition, in the deflection fireproof plate 10 for rocket launch according to the first embodiment, by adopting the above-mentioned arrangement configurations 1-1, 1-2, and 1-3, the direction of the combustion gas during rocket launch can be smoothly changed to the direction along the flue even with only the flat fireproof plate (upper fireproof plate block 12 and lower fireproof plate block 14), and the deflection fireproof plate 10 for rocket launch according to the first embodiment is composed of only 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 framework structure 72 by bolting, and no special attachment method is used.

[0058] Therefore, the deflection fireproof plate 10 for rocket launch according to the first embodiment has low costs for both new installation and replacement.

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

[0060] As described above with reference to Figs. 3 and 4, the lower fireproof plate block 14 of the rocket launch deflection fireproof plate 10 according to the first embodiment has a substantially rectangular parallelepiped shape with the upper surface 14A side cut out from the rectangular parallelepiped at a portion adjacent to the upper fireproof plate block 12 directly above. In the rocket launch deflection fireproof plate 10 according to the first embodiment, the lower fireproof plate block 14 is configured so as not to come into contact with the upper fireproof plate block 12 located directly above even when rotated upward or downward about the abutment portion 72A1. In the rocket launch deflection fireproof plate 20 according to the second embodiment, however, the lower fireproof plate block 24 has a rectangular parallelepiped shape as shown in Figs. 6 to 8, and the upper end 24A1 of the upper surface 24A of the lower fireproof plate block 24 abuts against the abutment portion 12B1 near the center of the lower end surface 12B of the upper fireproof plate block 12 located directly above. As for the rest of the configuration, the deflection fireproof plate for rocket launch 20 according to the second embodiment is similar to the deflection fireproof plate for rocket launch 10 according to the first embodiment, so in principle the same reference numerals are used for corresponding members and parts, and explanations are omitted in principle. Also, the lower fireproof plate block 24 is similar to the lower fireproof plate block 14 of the deflection fireproof plate for rocket launch 10 according to the first embodiment, except for the point that it has a rectangular parallelepiped shape, so explanations of the lower fireproof plate block 24 will be omitted as appropriate, and the omitted points will be replaced with the explanations of the lower fireproof plate block 14 in "(1) First embodiment" above.

[0061] The deflection fireproof plate 20 for rocket launch according to the 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 board block 24 and a support beam 18, and the support beam 18 is attached to the underside of the lower fire-resistant board block 24, so that the lower fire-resistant board block 24 and the support beam 18 are integrated.

[0063] The lower fireproof block 24 cooperates with the upper fireproof block 12 to receive the combustion gases generated when the rocket is launched and direct the combustion gases in a predetermined direction (in the direction of the flue).

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

[0065] Also, as shown in FIG. 7, the upper fire-resistant board block 12 and the lower fire-resistant board block 24 are attached to the frame structure 72 and arranged so that a surface 12A1, which is an imaginary parallel extension of the upper surface 12A of the upper fire-resistant board block 12, intersects with the upper surface 24A of the lower fire-resistant board block 24 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 fire-resistant board block 24 is located below the lower end portion of the upper fire-resistant board block 12, and when viewed from above in the vertical direction, there is no gap between the upper fire-resistant board block 12 and the lower fire-resistant board block 24 (hereinafter, this may be referred to as arrangement configuration 2-3).

[0067] Therefore, the combustion gas during rocket launch smoothly flows 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, changes its flow direction toward the flue, and proceeds into the flue. In the deflection fireproof plate for rocket launch 20 according to the second embodiment, by adopting the above-mentioned arrangement configurations 2-1, 2-2, and 2-3, the direction of the combustion gas during rocket launch can be smoothly changed to the direction along the flue even with only the flat fireproof plate (upper fireproof plate block 12 and lower fireproof plate block 24).

[0068] The support beams 18 have the role of attaching the lower fire-resistant board block 24 to the framework structure 72 and fixing the position of the lower fire-resistant board block 24. For example, a steel material with an H-shaped cross section can be used for the support beams 18. The support beams 18 can be detachably attached to the framework structure 72 using bolts or the like.

[0069] The support beam 18 attached to the underside of the lower fire-resistant board block 24 is supported by the frame structure 72 at the lower support portion 72C2 of the diagonal steel material 72C and the abutment portion 72A3 with the bottom horizontal steel material 72A, and the lower fire-resistant board block 24 is arranged so that the angle of inclination of the lower fire-resistant board block 24 with respect to the horizontal plane is smaller than the angle of inclination of the upper fire-resistant board block 12 with respect to the horizontal plane (see arrangement configuration 2-1, Figure 6), and so that the surface 12A1, which is an imaginary parallel extension of the top surface 12A of the upper fire-resistant board block 12, intersects with the top surface 24A of the lower fire-resistant board block 24 located diagonally below (see arrangement configuration 2-2, Figure 7). The upper end 24A1 of the upper surface 24A of the lower fireproof block 24 is located below the lower end of the upper fireproof block 12, and there is no gap between the upper fireproof block 12 and the lower fireproof block 24 when viewed from above in the vertical direction (see the above-mentioned arrangement 2-3, FIG. 7). In the support portion 72C2, the upper end of the lower surface of the support beam 18 attached to the lower surface of the lower fireproof block 24 is detachably connected to the diagonal steel material 72C by a bolt via a specified jig. It is preferable that the specified jig has a long hole through which the bolt is inserted so that the fixing position can be finely adjusted. In the abutment portion 72A3, the lower end of the lower surface of the support beam 18 abuts on the upper surface of the bottom horizontal steel material 72A, and a stopper 72A4 is provided on the upper surface of the bottom horizontal steel material 72A in the vicinity of the stopper 72A4 to prevent the lower fireproof block 24 from sliding in a direction in which the inclination with respect to the horizontal plane becomes smaller. Further, an upper end 24A1 of an upper surface 24A of the lower fire-resistant plate block 24 abuts against an abutment portion 12B1 near the center of a lower end surface 12B of the upper fire-resistant plate block 12 located directly above.

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

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

[0072] Therefore, the deflection fireproof plate 20 for rocket launch according to the second embodiment has low costs for both new installation and replacement.

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

[0074] As described above with reference to FIG. 7, the lower fireproof plate block 24 of the rocket launch deflection fireproof plate 20 according to the second embodiment is configured such that the upper end 24A1 of the upper surface 24A of the lower fireproof plate block 24 abuts on the abutment portion 12B1 near the center of the lower end surface 12B of the upper fireproof plate block 12 located directly above, but in the rocket launch deflection fireproof plate 30 according to the third embodiment, the upper end 34A1 of the upper surface 34A of the lower fireproof plate block 34 abuts on the lower end 12B2 (abutment portion 12B3) of the lower end surface 12B of the upper fireproof plate block 12 located directly above. As for the other configurations, the rocket launch deflection fireproof plate 30 according to the third embodiment is similar to the rocket launch deflection fireproof plate 20 according to the second embodiment, so that the same reference numerals are generally used for corresponding members and parts, and the description thereof is generally omitted. In addition, since the lower fire-resistant plate block 34 is similar to the lower fire-resistant plate block 24 of the rocket launch deflection fire-resistant plate 20 according to the second embodiment, the explanation of the lower fire-resistant plate block 34 will be omitted as appropriate, and the omitted explanations will be replaced with the explanation of the lower fire-resistant plate block 24 in the above "(2) Second embodiment."

[0075] The deflection fireproof plate 30 for rocket launch according to the 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 board block 34 and a support beam 18, and the support beam 18 is attached to the underside of the lower fire-resistant board block 34, so that the lower fire-resistant board block 34 and the support beam 18 are integrated.

[0077] The lower fireproof block 34 cooperates with the upper fireproof block 12 to receive the combustion gases generated when the rocket is launched and direct the combustion gases in a predetermined direction (in the direction of the flue).

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

[0079] Furthermore, as shown in FIG. 10, the upper fire-resistant board block 12 and the lower fire-resistant board block 34 are attached to the frame structure 72 and arranged so that a surface 12A1, which is an imaginary parallel extension of the upper surface 12A of the upper fire-resistant board block 12, intersects with the upper surface 34A of the lower fire-resistant board block 34 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 fire-resistant board block 34 is located below the lower end portion of the upper fire-resistant board block 12, and when viewed from above in the vertical direction, there is no gap between the upper fire-resistant board block 12 and the lower fire-resistant board block 34 (hereinafter, this may be referred to as arrangement configuration 3-3).

[0081] Therefore, the combustion gas during rocket launch smoothly flows 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, changes its flow direction toward the flue, and proceeds into the flue. In the deflection fireproof plate for rocket launch 30 according to the third embodiment, by adopting the above-mentioned arrangement configurations 3-1, 3-2, and 3-3, the direction of the combustion gas during rocket launch can be smoothly changed to the direction along the flue even with only the flat fireproof plate (upper fireproof plate block 12 and lower fireproof plate block 34).

[0082] The support beams 18 have the role of attaching the lower fire-resistant board block 34 to the framework structure 72 and fixing the position of the lower fire-resistant board block 34. For example, a steel material with an H-shaped cross section can be used for the support beams 18. The support beams 18 can be detachably attached to the framework structure 72 using bolts or the like.

[0083] The support beam 18 attached to the underside of the lower fire-resistant board block 34 is supported by the frame structure 72 at the lower support portion 72C3 of the diagonal steel material 72C and the abutment portion 72A5 with the bottom horizontal steel material 72A, and the lower fire-resistant board block 34 is arranged so that the angle of inclination of the lower fire-resistant board block 34 with respect to the horizontal plane is smaller than the angle of inclination of the upper fire-resistant board block 12 with respect to the horizontal plane (see arrangement configuration 3-1, Figure 9), and so that the surface 12A1, which is an imaginary parallel extension of the top surface 12A of the upper fire-resistant board block 12, intersects with the top surface 34A of the lower fire-resistant board block 34 located diagonally below (see arrangement configuration 3-2, Figure 10). The upper end 34A1 of the upper surface 34A of the lower fireproof block 34 is located below the lower end of the upper fireproof block 12, and there is no gap between the upper fireproof block 12 and the lower fireproof block 34 when viewed from above in the vertical direction (see the above-mentioned arrangement 3-3, FIG. 10). In the support portion 72C3, the upper end of the lower surface of the support beam 18 attached to the lower surface of the lower fireproof block 34 is detachably connected to the diagonal steel material 72C by a bolt via a specified jig. It is preferable that the specified jig has a long hole through which the bolt is inserted so that the fixing position can be finely adjusted. In the abutment portion 72A5, the lower end of the lower surface of the support beam 18 abuts on the upper surface of the bottom horizontal steel material 72A, and a stopper 72A6 is provided on the upper surface of the bottom horizontal steel material 72A in the vicinity of the stopper 72A6 to prevent the lower fireproof block 34 from sliding in a direction in which the inclination with respect to the horizontal plane becomes smaller. Moreover, an upper end 34A1 of an upper surface 34A of the lower fire-resistant plate block 34 abuts against a lower end 12B2 (abutment portion 12B3) of a lower end surface 12B of the upper fire-resistant plate block 12 positioned directly above.

[0084] In the deflection fireproof plate 30 for rocket launch according to the third embodiment, the upper end 34A1 of the upper surface 34A of the lower fireproof plate block 34 abuts against the lower end 12B2 (abutment portion 12B3) of the lower end surface 12B of the upper fireproof plate block 12 located directly above, so that even if the lower fireproof plate block 34 is rotated downward around the abutment portion 72A5, the lower fireproof plate block 34 does not interfere with the upper fireproof plate block 12. Therefore, when replacing the lower fireproof plate block 34 of the deflection fireproof plate 30 for rocket launch according to the third embodiment, after releasing the bolt connection at the support portion 72C3, as shown in FIG. 11, the lower fireproof plate block 34 can be rotated downward around the abutment portion 72A5 to lay it horizontally, and then pulled out horizontally to be removed. The lower fireproof plate block 34 and the support beam 18 are removed in an integrated state. If there is a risk of interference with the support beams 16 attached to the underside of the upper fire-resistant board block 12 when the lower fire-resistant board block 34 is rotated downward around the abutment portion 72A5, the ends of the support beams 16 at risk of interference are cut diagonally in advance to prevent interference. As described above, the lower part of the diagonal steel members 72C of the framework structure 72 is configured to be detachable, and is removed from the framework structure 72 when the lower fire-resistant board block 34 is rotated downward to lay it horizontally.

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

[0086] Therefore, the deflection fireproof plate 30 for rocket launch according to the third embodiment has low costs for both new installation and replacement.

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

[0088] The lower fireproof plate block 24 of the deflection fireproof plate for rocket launch 20 according to the second embodiment is configured so that the upper end 24A1 of the upper surface 24A of the lower fireproof plate block 24 abuts on the abutment part 12B1 near the center of the lower end surface 12B of the upper fireproof plate block 12 located directly above, as described above with reference to Fig. 7, but the deflection fireproof plate for rocket launch 40 according to the fourth embodiment is configured so that the lower end 12B2 of the lower end surface 12B of the upper fireproof plate block 12 located directly above abuts on the abutment part 44A1 on the upper surface 44A of the lower fireproof plate block 44, as shown in Fig. 13. In order to realize this configuration, the lower part of the diagonal steel material 72C of the framework structure 72 is cut to form the diagonal steel material 80C, and a lower auxiliary structure 80E that supports the lower fireproof plate block 44 is newly provided, thereby forming a framework structure 80 that supports the deflection fireproof plate for rocket launch 40 according to the fourth embodiment at a predetermined inclination angle. In addition, the lower end of the support beam 16 was cut diagonally to match the lower end surface of the diagonal steel material 80C, forming a support beam 16A attached to the lower surface of the upper fireproof plate block 12. As for the other configurations, the deflection fireproof plate 40 for rocket launch according to the fourth embodiment is similar to the deflection fireproof plate 20 for rocket launch according to the second embodiment, so that the corresponding members and parts are generally given the same reference numerals and descriptions are generally omitted. In addition, the lower fireproof plate block 44 is similar to the lower fireproof plate block 24 of the deflection fireproof plate 20 for rocket launch according to the second embodiment, so that descriptions of the lower fireproof plate block 44 are appropriately omitted, and the omitted points are replaced with the descriptions of the lower fireproof plate block 24 in the above "(2) Second embodiment".

[0089] The deflection fireproof plate 40 for rocket launch 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 configured with the upper fire-resistant board block 12 and the support beam 16A, and the support beam 16A is attached to the lower surface of the upper fire-resistant board block 12, and the upper fire-resistant board block 12 and the support beam 16A are integrated. As described above, the support beam 16A is formed by cutting the lower end of the support beam 16 obliquely to match the lower end surface of the diagonal steel material 80C of the frame structure 80.

[0091] The lower fire-resistant member 43 is composed of a lower fire-resistant board block 44 and a support beam 18, and the support beam 18 is attached to the underside of the lower fire-resistant board block 44, so that the lower fire-resistant board block 44 and the support beam 18 are integrated.

[0092] 12, the frame structure 80 is a steel structure having bottom horizontal steel members 80A, vertical steel members 80B, diagonal steel members 80C, intermediate horizontal steel members 80D, and a lower auxiliary structure 80E, and serves to support the upper fire-resistant board block 12 and the lower fire-resistant board block 44 at a predetermined inclination angle. The lower auxiliary structure 80E has diagonal steel members 80E1 having an inclination angle corresponding to the inclination angle required for the lower fire-resistant board block 44. For each of the members 80A, 80B, 80C, 80D, and 80E of the frame structure 80, for example, steel members having an H-shaped cross section can be used.

[0093] The lower fireproof block 44, in cooperation with the upper fireproof block 12, has the role of receiving the combustion gases generated when the rocket is launched and directing the combustion gases in a predetermined direction (in the direction of the flue).

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

[0095] Furthermore, as shown in FIG. 13, the upper fire-resistant board block 12 and the lower fire-resistant board block 44 are attached to the frame structure 80 and arranged so that a surface 12A1, which is an imaginary parallel extension of the upper surface 12A of the upper fire-resistant board block 12, intersects with the upper surface 44A of the lower fire-resistant board block 44 located diagonally below (hereinafter, this may be 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 board block 44 is located below the upper fire-resistant board block 12, and when viewed from above in the vertical direction, there is no gap between the upper fire-resistant board block 12 and the lower fire-resistant board block 44 (hereinafter, this may be referred to as arrangement configuration 4-3).

[0097] Therefore, the combustion gas during rocket launch smoothly flows 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, changes its flow direction toward the flue, and proceeds into the flue. In the deflection fireproof plate for rocket launch 40 according to the fourth embodiment, by adopting the above-mentioned arrangement configurations 4-1, 4-2, and 4-3, the direction of the combustion gas during rocket launch can be smoothly changed to the direction along the flue even with only the flat fireproof plate (upper fireproof plate block 12 and lower fireproof plate block 44).

[0098] The support beams 18 have the role of attaching the lower fire-resistant board blocks 44 to the diagonal steel members 80E1 of the lower auxiliary structure 80E of the frame structure 80, thereby fixing the position of the lower fire-resistant board blocks 44. For example, a steel member with an H-shaped cross section can be used for the support beams 18. The support beams 18 can be detachably attached to the diagonal steel members 80E1 using bolts or the like.

[0099] The support beam 18 attached to the lower surface of the lower fireproof block 44 is attached to and supported by the diagonal steel material 80E1 of the lower auxiliary structure 80E, and the lower fireproof block 44 is arranged so that the inclination angle of the lower fireproof block 44 with respect to the horizontal plane is smaller than the inclination angle of the upper fireproof block 12 with respect to the horizontal plane (see the above-mentioned arrangement 4-1, FIG. 12), and so that the surface 12A1 obtained by virtually extending the upper surface 12A of the upper fireproof block 12 in parallel intersects with the upper surface 44A of the lower fireproof block 44 located diagonally below (see the above-mentioned arrangement 4-2, FIG. 13). Also, the lower end 12B2 of the lower end surface 12B of the upper fireproof block 12 located directly above abuts against the abutment portion 44A1 on the upper surface 44A of the lower fireproof block 44. The upper end 44A2 of the upper surface 44A of the lower fire-resistant board block 44 is located below the upper fire-resistant board block 12, and when viewed from above in the vertical direction, there is no gap between the upper fire-resistant board block 12 and the lower fire-resistant board block 44 (see arrangement configuration 4-3 and Figure 13).

[0100] In the deflection fireproof plate 40 for rocket launch according to the fourth embodiment, the lower end 12B2 of the lower end surface 12B of the upper fireproof plate block 12 located directly above abuts against the abutment portion 44A1 on the upper surface 44A of the lower fireproof plate block 44, so that the lower fireproof plate block 44 can be pulled out obliquely upward while maintaining the inclination angle, as shown in FIG. 14. Therefore, when replacing the lower fireproof plate block 44 of the deflection fireproof plate 40 for rocket launch according to the fourth embodiment, after releasing the bolt connection to the diagonal steel material 80E1, the lower fireproof plate block 44 is pulled out obliquely upward while maintaining the inclination angle, as shown in FIG. 14. The lower fireproof plate block 44 and the support beam 18 are removed in a state of being integrated.

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

[0102] Therefore, the deflection fireproof plate 40 for rocket launch according to the fourth embodiment has low costs for both new installation and replacement.

[0103] (5) Supplementary Information In the above-described embodiment, the upper fireproof member 11 includes the support beam 16, the upper fireproof member 41 includes the support beam 16A, and the lower fireproof members 13, 23, 33, 43 include the support beam 18, but it is not essential to include the support beams 16, 16A, 18, and the upper fireproof board block 12 and the lower fireproof board blocks 14, 24, 34, 44 may be connected to the frame structures 72, 80 by other means without using the support beams 16, 16A, 18. Also, the upper fireproof board block 12 and the lower fireproof board blocks 14, 24, 34, 44 may be directly connected to the frame structures 72, 80, in which case the upper fireproof members 11, 41 are formed only by the upper fireproof board block 12, and the lower fireproof members 13, 23, 33, 43 are formed only by the lower fireproof board blocks 14, 24, 34, 44. [Explanation of symbols]

[0104] 10, 20, 30, 40... Deflective fireproof plate for rocket launch 11, 41...Upper fireproof member 12…Upper fireproof block 12A: Upper surface of upper fireproof block 12 12A1: A surface that is an imaginary parallel extension of the upper surface 12A 12B: Lower end surface of upper fireproof block 12 12B1: Abutment portion near the center of the lower end surface 12B 12B2: Lower end of lower end surface 12B 12B3: Abutment portion at the lower end of the lower end surface 12B 13, 23, 33, 43...Lower fireproof member 14, 24, 34, 44…Lower fireproof block 14A: Upper surface of lower fireproof block 14 14A1: Upper end of upper surface 14A 14B: Lower surface of lower fireproof block 14 14C: Inclined surface adjacent to upper fireproof block 12 16, 16A, 18...Support beam 24A: Upper surface of lower fireproof block 24 24A1: Upper end of upper surface 24A 34A: Upper surface of lower fireproof block 34 34A1: Upper end of upper surface 34A 44A: Upper surface of lower fireproof block 44 44A1: Contact portion on upper surface 44A 44A2: Upper end of upper 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 material of lower auxiliary structure 80E 100…Rocket launch facility 102...Rocket 104…Launch pad 106…Flute 108, 110...Flame deflection plate 112...Upper deflection plate 112a, 114a...base 112b, 114b... heat insulating material 112c, 114c... stepped portion 114... lower offset plate 116... shaft 118... fixing portion 120... flue z... gap

Claims

1. A location having a plurality of refractory members and a support member that supports the plurality of refractory members at a predetermined angle. A deflection fireproof plate for launching rockets, the plurality of refractory members include a first refractory member having an upper surface, a lower surface, and a side surface, and having a predetermined thickness; and a second refractory member having an upper surface, a lower surface, and a side surface, and having a predetermined thickness, the upper surfaces of the first refractory member and the second refractory member being supported from below by the support member so that the upper surfaces of the first refractory member and the second refractory member are inclined at a predetermined angle with respect to a horizontal plane and are adjacent to each other; a deflection fireproof plate for rocket launch, characterized in that the first refractory member is disposed above the second refractory member and is disposed on the support member so as to have a different inclination angle with respect to a horizontal plane than the second refractory member; the first refractory member is disposed so that an imaginary parallel extension of an upper surface of the first refractory member intersects with an upper surface of the second refractory member; and there is no gap between the first refractory member and the second refractory member when viewed from above in the vertical direction; and the second refractory member is detachable from the support member and is fixed to the support member so that it can be rotated around the highest or lowest position of the second refractory member to be replaced while the first refractory member is fixed to the support member.

2. 2. A method for replacing a deflection refractory plate for a rocket launcher according to claim 1, comprising: a raising step of rotating the second refractory member about the lowest position as a rotation center to raise the second refractory member; a removal step of lifting and removing the second refractory member erected in the erecting step; A method for replacing a deflection fireproof plate for a rocket launch, comprising:

3. 2. A method for replacing a deflection refractory plate for a rocket launcher according to claim 1, comprising: a rotating step of rotating the second refractory member horizontally around the lowest position of the second refractory member as a rotation center; a removing step of removing the second refractory member that has been horizontalized in the rotating step; A method for replacing a deflection fireproof plate for a rocket launch, comprising:

4. 2. A method for replacing a deflection refractory plate for a rocket launcher according to claim 1, comprising: a rotating step of rotating the second refractory member horizontally around the highest position of the second refractory member as a rotation center; a removing step of removing the second refractory member that has been horizontalized in the rotating step; A method for replacing a deflection fireproof plate for a rocket launch, comprising:

Images