JP7441470B2 - Fireproof version, rocket launch pad, and fireproof brick replacement method in fireproof version - Google Patents

Description

The present invention relates to a fireproof version, a rocket launch pad, and a fireproof brick replacement method in a fireproof version, and more particularly, to a fireproof version that can be used for ground equipment for spacecraft, a rocket launch pad, and a fireproof brick replacement method in a fireproof version. .

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

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

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

Japanese Unexamined Patent Publication No. 197998/1983

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

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

The present invention has been made in view of this point, and an object of the present invention is to provide a fireproof plate, a rocket launch pad, and a method for replacing firebricks in a fireproof plate, in which the firebricks can be partially replaced.

The present invention solves the above problems by using the following fireproof plate, rocket launch pad, and method for replacing firebricks in the fireproof plate.

That is, a first aspect of the fireproof version according to the present invention includes a bottom plate, a plurality of firebricks laid out on the bottom plate, and a regulation that restricts movement of the firebricks on the bottom plate. The regulating member has a shaft portion that penetrates the bottom plate from a surface of the bottom plate opposite to the firebrick arrangement side and projects toward the firebrick side, and A part of the protruding shaft portion is inserted into the fireproof brick from the bottom surface of the fireproof brick facing the bottom plate, thereby regulating the movement of the position of the firebrick on the bottom plate, and the bottom plate includes: This fireproof version is characterized in that it is provided with a through hole that can press the bottom surface of the firebrick.

In the present invention, a plurality of fireproof bricks are laid out and arranged on a bottom plate to constitute a fireproof plate, and each surface of the individual firebricks constituting the fireproof plate corresponds to a side surface, a bottom surface, or a top surface. Whether this is the case shall be determined based on the state in which the fireproof plate is placed on a horizontal surface so that the bottom plate of the fireproof plate faces downward. Furthermore, in the fireproof version of the present invention, when interpreting words that refer to directions such as up and down, the interpretation is based on the state where the fireproof version is placed on a horizontal surface with the bottom plate facing downward. shall be taken as a thing. The same applies to other parts of the present application.

In addition, "laying firebricks together" does not include adhering adjacent firebricks with grout, etc., but it also means that the sides of the firebricks are in contact with each other, or the sides are placed in such a way that combustion gas cannot pass through. It refers to things that are arranged closely together with some gaps. The same shall apply to descriptions in other parts of this application.

Furthermore, "regulating the movement of the refractory bricks on the bottom plate" includes, as a subordinate concept, the concept of fixing the firebrick so that it does not move at all with respect to the bottom plate, and is included in the present invention. This does not preclude the possibility that the refractory bricks may move to some extent with respect to the bottom plate within the range in which the effect is achieved. In other words, the "regulating member that restricts the movement of the refractory bricks on the bottom plate" allows the refractory bricks to move from the position on the bottom plate more easily than when the refractory bricks are placed without using the restricting member. (Movement in at least one direction parallel to the bottom surface of the bottom plate or away from the bottom plate), and is limited only to members that prevent movement at all from the relevant placement position. isn't it.

Further, the regulating member may include a holding portion provided on the shaft portion, and the holding portion may further restrict movement of the refractory brick in a direction away from the bottom plate.

Next, a second aspect of the fireproof version according to the present invention includes a bottom plate, a plurality of firebricks laid out on the bottom plate, and movement of the firebricks on the bottom plate is regulated. a regulating member, the regulating member having a shaft portion that penetrates the bottom plate from a surface of the bottom plate opposite to the firebrick arrangement side and protrudes toward the firebrick side, and By inserting a part of the shaft protruding into the fireproof brick from the bottom surface of the fireproof brick facing the bottom plate, movement of the position of the firebrick on the bottom plate is restricted, and the adjacent fireproof brick Among the bricks, one side surface of one fireproof brick and one side surface of the other fireproof brick are controlled by regulating the movement of the one fireproof brick on the bottom plate with the regulating member. The other refractory brick is also arranged in an overlapping manner so as to be restricted from moving away from the bottom plate via the one refractory brick, and the bottom surface of the one refractory brick can be pressed against the bottom plate. This fireproof version is characterized by having through holes.

In the second aspect of the fireproof version according to the present invention, the one side surface of the one firebrick is formed such that the side farther from the bottom surface protrudes toward the other firebrick side than the side closer to the bottom surface. The one side surface of the other refractory brick is an inclined surface formed such that a side closer to the bottom surface projects toward the one refractory brick side than a side farther from the bottom surface. Good too.

Moreover, in the first and second aspects of the fireproof plate according to the present invention, the through hole is a hole through which the shaft portion of the regulating member passes, and the firebrick is connected to the bottom plate through the through hole. may be configured so that it can be pressed in the opposite direction.

Moreover, in the first and second aspects of the fireproof plate according to the present invention, the through hole is provided at a location different from the hole through which the shaft portion of the regulating member passes. You can.

Furthermore, a third aspect of the fireproof version according to the present invention includes a bottom plate and a plurality of rectangular parallelepiped-shaped firebricks arranged on the bottom plate, and the plurality of firebricks include one a first group of refractory bricks arranged in parallel in a direction; and a second group of refractory bricks adjacent to the first group of refractory bricks in a direction perpendicular to the first direction and arranged in parallel in the first direction. The positions of adjacent side surfaces of the firebricks constituting the first firebrick group, including the brick group, and the positions of the adjacent side surfaces of the firebricks constituting the second firebrick group are as follows: The fireproof plates are arranged so as to be staggered when viewed in a direction perpendicular to the direction, and the bottom plate is provided with through holes so that the bottom surface of the firebricks can be pressed. .

Further, in the first to third aspects of the fireproof plate according to the present invention, a reinforcing member is attached to a surface of the bottom plate opposite to a surface on which the firebricks are arranged. may be configured.

A first aspect of the rocket launch pad according to the present invention is a rocket launch pad equipped with any of the fireproof versions of the first to third aspects.

A second aspect of the rocket launch pad according to the present invention is a rocket launch pad equipped with a deflection plate formed by disposing the fireproof plate of the third aspect obliquely around an axis in the one direction with respect to a horizontal surface. be.

A first aspect of the refractory brick replacement method according to the present invention is a method for exchanging the refractory bricks of the fireproof version according to the first aspect, which comprises replacing the refractory bricks on the bottom plate of the refractory bricks to be replaced among the refractory bricks. A regulating member removal step in which the regulating member that regulates the movement of the position is removed; and the through hole provided in the bottom plate of the refractory brick whose movement was regulated by the regulating member removed in the regulating member removing step. The firebrick replacement method is characterized by comprising the step of removing the firebrick by applying a pressing force through the hole to push out the firebrick in a direction opposite to the bottom plate.

A second aspect of the refractory brick replacement method according to the present invention is a method for exchanging the refractory bricks of the fireproof version of the first aspect, comprising: applying a pressing force to the refractory bricks via the shaft portion; The firebrick replacement method is characterized by comprising a firebrick removal step of pushing out the firebrick in a direction opposite to the bottom plate and removing it.

A third aspect of the refractory brick replacement method according to the present invention is a method for exchanging the refractory bricks of the fireproof version according to the second aspect, wherein the refractory brick to be replaced among the refractory bricks is the other refractory brick. a regulating member removal step of removing the regulating member that regulates the movement of the one fireproof brick on the bottom plate that is holding down the other fireproof brick to be replaced; and a regulating member removal step. A pressing force is applied from the through hole provided in the bottom plate to the one refractory brick whose movement was regulated by the regulating member removed in the process, and the one refractory brick is moved in the opposite direction from the bottom plate. a first refractory brick removal step of pushing out and removing; a second refractory brick removal step of removing the other refractory brick to be replaced after removing the one refractory brick in the first refractory brick removal step; A firebrick replacement method is characterized by comprising:

A fourth aspect of the refractory brick replacement method according to the present invention is a method for exchanging the refractory bricks of the fireproof version provided as a deflection version on the rocket launch pad of the second aspect, a refractory brick removal step of applying a pressing force to the refractory brick to be replaced through the through hole provided in the bottom plate to push out the refractory brick to be replaced in a direction opposite to the bottom plate, and removing the refractory brick; The firebrick replacement method is characterized in that even if the firebrick to be replaced is pushed out and removed from the bottom plate in the removal step, the positions of the other firebrick do not change.

According to the present invention, it is possible to provide a fireproof plate, a rocket launch pad, and a method for replacing firebricks in a fireproof plate, in which the firebricks can be partially replaced.

A plan view of the fireproof plate 10 according to the first embodiment of the present invention viewed from above Vertical end view of the fireproof plate 10 according to the first embodiment of the present invention (end view taken along the line II-II in FIG. 1) A plan view of the fireproof version 10 with the firebricks 14 removed (only the bottom plate 12 and reinforcing member 18 are left), viewed from below. A plan view of a fireproof plate 20 according to a second embodiment of the present invention viewed from above A plan view from above of a fireproof plate 30 according to a third embodiment of the present invention Vertical end view of fireproof plate 30 according to the third embodiment of the present invention (VI-VI line end view in FIG. 5)

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

(1) First embodiment (1-1) Structure and effects of the first embodiment FIG. 1 is a plan view of a fireproof plate 10 according to the first embodiment of the present invention viewed from above, and FIG. , is a vertical end view (end view taken along the line II-II in FIG. 1) of the fireproof plate 10. FIG. 3 is a plan view of the fireproof plate 10 with the firebricks 14 removed (only the bottom plate 12 and the reinforcing member 18 are left), as viewed from below. Note that in FIG. 1, for convenience of illustration, the reinforcing member 18 attached to the lower surface of the bottom plate 12 is not shown.

The fireproof version 10 according to the first embodiment includes a bottom plate 12, a rectangular parallelepiped-shaped firebrick 14, a regulating member 16, and a reinforcing member 18. Bricks 14 are laid out so that their sides are in contact with each other, and are arranged in four rows parallel to the long side direction (hereinafter referred to as the X direction) of the fireproof plate 10. They are arranged in six rows parallel to the direction (hereinafter sometimes referred to as the Y direction), and the overall shape of the fireproof plate 10 is formed into a flat plate, as shown in FIGS. 1 and 2. . The refractory bricks 14 laid out on one side of the bottom plate 12 are fixed to the bottom plate by a regulating member 16 whose one end is inserted into the fixing hole 14A of the refractory brick 14 through the fixing through hole 12A of the bottom plate 12. 12, movement in the direction parallel to the bottom plate 12 and in the direction away from the bottom plate 12 is restricted (in FIG. 1, the fixing through hole 12A of the bottom plate 12 and the fixing hole 14A are displayed overlapping each other.) Reinforcing members 18 are attached vertically and horizontally to the other surface of the bottom plate 12, reinforcing the bottom plate 12, and stably maintaining the overall shape of the fireproof plate 10.

The bottom plate 12 is a rectangular steel plate member that serves as a backing material to fix the position of a plurality of firebricks 14 that are laid out in a flat plate shape and arranged so that their sides are in contact with each other, and has a standard thickness of 3. A steel plate of ~6mm is used. By laying and arranging the refractory bricks 14 so that the side surfaces of adjacent refractory bricks 14 are in contact with each other, the combustion gas exposed to the rocket during launch and landing is prevented from passing between the side surfaces of the adjacent refractory bricks 14. can do. Further, the bottom plate 12 is provided with a fixing through hole 12A and an extrusion through hole 12B.

The regulating member 16 is a member that regulates the position of the firebrick 14 on the bottom plate 12, and includes a shaft portion 16A and a holding portion 16B. The shaft portion 16A of the regulating member 16 is inserted through the fixing through hole 12A of the bottom plate 12, and one end thereof is inserted into the fixing hole 14A of the refractory brick 14, thereby regulating the position of the refractory brick 14 on the bottom plate 12. . Further, the holding portion 16B of the regulating member 16 further regulates the movement of the refractory brick 14 in the direction away from the bottom plate 12.

The fixing through hole 12A of the bottom plate 12 is a through hole through which the shaft portion 16A of the regulating member 16 is inserted, and the shaft portion 16A of the regulating member 16 inserted through the fixing through hole 12A is provided on the bottom surface of the refractory brick 14. It is inserted into the fixing hole 14A and fixed to the firebrick 14. Further, the holding portion 16B of the regulating member 16 is pressed against the lower surface of the bottom plate 12 to maintain the position of the shaft portion 16A with respect to the bottom plate 12. In this way, the regulating member 16 fixes the position of the refractory brick 14 on the bottom plate 12. As the regulating member 16, for example, a bolt whose shaft portion is threaded can be used, and in this case, the head of the bolt becomes the holding portion 16B. Further, for example, a threaded rod-like member may be used as the shaft portion 16A, and a nut screwed onto this may be used as the holding portion 16B.

When the fireproof version 10 is used as a deflection version of a launch pad, it will be used at an angle of about 45 degrees from the horizontal plane, but since the firebricks 14 are fixed to the bottom plate 12 by the regulating member 16, the fireproof version 10 cannot be launched. Even when used as a deflection plate of a stand, it is possible to replace the firebrick 14 without shifting the position of the firebrick 14 that is not to be replaced. Note that when the fireproof plate 10 is used as a landing pad, the fireproof plate 10 is used in a horizontal state, so fixing with the regulating member 16 can be omitted, but it may be exposed to the combustion gas of the rocket landing pad. Since the portion is not only exposed to high heat but also exposed to high-velocity combustion gas, it is preferable not to omit fixing with the regulating member 16 even when the fireproof plate 10 is used as a landing pad.

The extrusion through hole 12B is a through hole used when replacing the fire brick 14, and after removing the regulating member 16 that fixed the fire brick 14 to be replaced, the bottom plate is attached to the bottom of the fire brick 14 to be replaced. This is a through hole through which the refractory brick 14 to be replaced can be pushed out and removed by applying a pressing force from the 12 side. When applying a pressing force from the bottom plate 12 side to the bottom surface of the refractory brick 14 to be replaced through the extrusion through hole 12B, for example, a small hydraulic jack or the like can be used.

At the ends (four sides of the rectangle) of the bottom plate 12, side walls 12C having a height slightly lower than the thickness of the firebrick 14 are provided upward. When placing the refractory bricks 14 on the top surface of the bottom plate 12, by placing the refractory bricks 14 while applying force in the direction of the side wall 12C (arranging them while pressing against the side wall 12C), the side surfaces of the adjacent refractory bricks 14 are aligned. This makes it easier to arrange them so that they are in contact with each other without any gaps. Further, since the portion of the rocket launch pad or landing pad exposed to combustion gas is not only exposed to high heat but also exposed to large wind pressure, the side wall 12C also has the role of ensuring the fixation of the refractory bricks 14 of the refractory plate 10. As with the bottom plate, the side wall 12C is typically made of a steel plate with a thickness of about 3 to 6 mm.

The firebrick 14 is a member that directly takes charge of the fireproof performance of the fireproof version 10 according to the first embodiment. The thickness of the firebrick 14 is typically about 200 mm. The refractory bricks 14 are rectangular parallelepipeds, all have the same shape, and are laid out on one surface (upper surface) of the bottom plate 12, and adjacent refractory bricks 14 are arranged so that their sides are in contact with each other. The refractory bricks 14 are arranged so that combustion gas cannot pass between the side surfaces of the adjacent refractory bricks 14. Although the refractory bricks 14 of the refractory version 10 according to the first embodiment have a rectangular parallelepiped shape, the shape of the refractory bricks of the refractory version according to the present invention is not necessarily limited thereto. It may be a non-rectangular parallelepiped shape with trapezoidal sides like the refractory bricks of the fireproof version 30 (downward refractory bricks 34, 34X and upward refractory bricks 36, 36X), or other shapes.

Further, the material of the firebrick 14 is not particularly limited as long as it can exhibit the necessary fireproof performance, etc., and specifically, for example, alumina, magnesia, chromium oxide, zirconia, etc. etc. can be used.

Reinforcing members 18 are attached vertically and horizontally to the lower surface of the bottom plate 12 (the surface opposite to the surface on which the refractory bricks 14 are laid out). The reinforcing member 18 has the role of reinforcing the bottom plate 12 so that the overall shape of the fireproof version 10 is maintained stably. In the fireproof version 10 according to the first embodiment, a steel material with an H-shaped cross section is used as the reinforcing member 18, but as long as it has the necessary mechanical properties (including mechanical properties at high temperatures). , the material and shape are not particularly limited.

As explained above, in the fireproof version 10 according to the first embodiment, the firebricks 14 are laid out on one surface (upper surface) of the bottom plate 12, and the side surfaces of the adjacent firebricks 14 are in contact with each other. In this state, the refractory brick 14 is fixed to the bottom plate 12 by a regulating member 16 inserted through the fixing through hole 12A of the bottom plate 12, so that movement of the firebrick 14 on the bottom plate 12 is regulated, and adhesion with grout or the like is not possible. I haven't.

In addition, since the bottom plate 12 is provided with a through hole 12B for extrusion, after removing the regulating member 16 that fixed the refractory brick 14 to be replaced, the extrusion hole 12B is inserted into the bottom surface of the refractory brick 14 to be replaced. By applying a pressing force through the hole 12B, the refractory brick 14 to be replaced can be pushed out and easily removed.

Therefore, in the fireproof version 10 according to the first embodiment, only the damaged firebricks 14 can be removed and replaced with new firebricks 14 easily.

In addition, since the shapes of the refractory bricks 14 constituting the refractory plate 10 according to the first embodiment are all the same, the refractory bricks 14 can be manufactured easily, and they can be kept in stock for replacement. Only one type of refractory brick 14 may be used.

(1-2) Method for manufacturing the fireproof version 10 according to the first embodiment When manufacturing the fireproof version 10 according to the first embodiment, the refractory brick 14 is placed on one surface (upper surface) of the bottom plate 12 on the side wall 12C. By arranging the refractory bricks 14 while applying force in the direction (arranging them while pressing against the side wall 12C), it is possible to arrange the firebricks 14 so that the side surfaces of adjacent firebricks 14 are in contact with each other without any gaps. Once the refractory brick 14 is placed in a predetermined position, the shaft portion 16A of the regulating member 16 is inserted through the fixing through hole 12A of the bottom plate 12, and one end of the shaft portion 16A is fixed to the fixing hole 14A of the fire brick 14. , the holding portion 16B of the regulating member 16 is pressed against the lower surface of the bottom plate 12 to maintain the position of the shaft portion 16A with respect to the bottom plate 12. In this way, the fireproof brick 14 is fixed to the bottom plate 12 by the regulating member 16, and the fireproof version 10 is produced.

(2) Second Embodiment FIG. 4 is a plan view showing a fireproof version 20 according to a second embodiment of the present invention. In FIG. 4, the fixing through hole 22A of the bottom plate 22 and the fixing hole 26A of the refractory brick 26 are shown overlapping each other.

The fireproof bricks 14 constituting the fireproof version 10 according to the first embodiment all had the same rectangular parallelepiped shape, but the firebricks constituting the fireproof version 20 according to the second embodiment have a long fireproof There are two types: bricks 24 and short refractory bricks 26. Other than this point and related matters, the fireproof version 20 according to the second embodiment is the same as the fireproof version 10 according to the first embodiment, so the following points regarding the fireproof version 10 according to the first embodiment The description of the fireproof plate 20 according to the second embodiment will be replaced with the corresponding description.

As shown in FIG. 4, the fireproof version 20 according to the second embodiment has firebricks 24 and 26 laid out on a bottom plate 22 so that their sides are in contact with each other, and Firebricks 24 and 26 are arranged in six rows parallel to the side direction (hereinafter sometimes referred to as the Y direction). Three refractory bricks 24 and one refractory brick 26 are arranged in each row.

Therefore, as shown in FIG. 4, the side surfaces of the firebricks 24 and 26 are continuous in the short side direction (Y direction) of the fireproof plate 20, but ), the refractory bricks 24, 26 are arranged so that the side surfaces of the refractory bricks 24, 26 are not continuous, that is, the positions of the side surfaces of the refractory bricks 24, 26 are staggered when viewed in the X direction. can be placed.

Further, as shown in FIG. 4, the extrusion through holes 22B of the bottom plate 22 are also arranged alternately when viewed in the X direction.

When using the fireproof plate 20 with fireproof bricks arranged as a deflection plate of a launch pad, the fireproof plate 20 is tilted at an angle of about 45 degrees around the Y axis with respect to the horizontal plane. When used at an angle such that the angle between the direction and the horizontal plane is about 45 degrees, even if either of the firebricks 24, 26 needs to be replaced and is removed, the firebricks 24, 26 will not be present in the X direction. Since the side surfaces of 26 are not continuous, the refractory bricks 24 (longer refractory bricks) located above them will not fall off even if they are not fixed by the regulating member 16. For this reason, in the fireproof version 20 according to the second embodiment, only the fireproof bricks 26 with short lengths are fixed by the regulating member 16 that restricts the movement of the position on the bottom plate, and the fireproof bricks 26 with long lengths are fixed. 24 is not fixed by the regulating member 16, and the number of locations fixed by the regulating member 16 is significantly smaller than that of the fireproof plate 10 of the first embodiment. Moreover, the fixing through holes 22A provided in the bottom plate 22 are also provided only at locations corresponding to the positions where the short refractory bricks 26 are arranged.

(3) Third Embodiment FIG. 5 is a plan view showing a fireproof plate 30 according to a third embodiment of the present invention, and FIG. 6 is an end view taken along the line VI-VI in FIG. Note that in FIG. 5, for convenience of illustration, the reinforcing member 18 attached to the lower surface of the bottom plate 32 is not shown. Moreover, in FIG. 5, the fixing through-hole 32A of the bottom plate 32 and the fixing hole 34B of the downward facing refractory bricks 34 and 34X are shown overlapping each other.

The fireproof bricks 14 used in the fireproof version 10 of the first embodiment and the firebricks 24 and 26 used in the fireproof version 20 of the second embodiment were both rectangular parallelepiped shapes, but As shown in FIG. 6, the refractory bricks (downward refractory bricks 34, 34X and upward refractory bricks 36, 36X) used in the version 30 have a trapezoidal vertical cross section in the X direction (longitudinal direction of the refractory version 30). ing. Other than this point and related matters, the fireproof version 30 according to the third embodiment is the same as the fireproof version 10 according to the first embodiment, so the following points regarding the fireproof version 10 according to the first embodiment The description of the fireproof plate 30 according to the third embodiment will be replaced with the corresponding description.

Among the refractory bricks used in the fireproof version 30 according to the third embodiment, the downwardly facing refractory bricks 34 and 34X have a downwardly inclined side surface 34A facing the direction of the bottom plate 32, and the upwardly facing refractory bricks 36 and 36X have a bottom plate. It has an upwardly inclined side surface 36A that faces upward rather than in the direction of 32. The slope of the downwardly inclined side surface 34A corresponds to the slope of the upwardly inclined side surface 36A, and when the downwardly inclined refractory bricks 34, 34X and the upwardly directed refractory bricks 36, 36X are laid out on the bottom plate 32, the downwardly inclined side surface 34A and the upwardly inclined side surface 34A correspond to each other. It has a shape that makes contact with the inclined side surface 36A without a gap. For this reason, even if the downwardly facing refractory bricks 34, 34X having the downwardly inclined side surface 34A and the upwardly facing refractory bricks 36, 36X having the upwardly inclined side surface 36A are used, the combustion gases that are exposed to the rocket during launch and landing will not reach the downwardly inclined side surface 34A. It is possible to prevent it from passing between the upwardly inclined side surface 36A.

Note that the downward refractory bricks 34X and the upward refractory bricks 36X are refractory bricks located at the ends of the fireproof plate 30 in the X direction, one side surface in the X direction is in contact with the side wall 12C, and the side surface is in contact with the top surface and the bottom surface. is orthogonal to

In addition, in the fireproof version 30 according to the third embodiment, the downwardly inclined side surfaces 34A of the downwardly directed firebricks 34, 34X and the upwardly inclined side surfaces 36A of the upwardly directed firebricks 36, 36X are in contact with each other without a gap, and the upwardly directed refractory bricks 36 , 36X have a configuration in which they partially overlap with the downward facing firebricks 34, 34X, so movement in the direction away from the bottom plate 32 is restricted, and if only the downward facing firebricks 34, 34X are fixed with the regulating member 16, , the upwardly facing refractory bricks 36, 36X are also restricted from moving on the bottom plate 32.

Therefore, in the fireproof version 30 according to the third embodiment, only the downward facing firebricks 34 and 34X are fixed by the regulating member 16, and the upward facing firebricks 36 and 36X are not fixed by the regulating member 16. First, the number of fixing locations by the regulating member 16 is significantly smaller than that of the fireproof version 10 according to the first embodiment.

When replacing the upward refractory bricks 36, 36X, the regulations that fix the downward refractory bricks 34, 34X include the downwardly inclined side surfaces 34A that press down the upwardly inclined side surfaces 36A of the upwardly directed refractory bricks 36, 36X to be replaced. After removing the member 16, a pressing force is applied to the downward refractory bricks 34, 34X from the extrusion through hole 32B to push them out and remove them, and then the upward refractory bricks 36, 36X to be replaced are removed.

Therefore, in the fireproof version 30 according to the third embodiment, among the extrusion through holes 32B of the bottom plate 32, only the extrusion through holes 32B for applying a pressing force to the bottom surfaces of the downward facing firebricks 34, 34X are provided at least. Alternatively, the extrusion through hole 32B for applying a pressing force to the bottom surface of the upward refractory bricks 36, 36X may not be provided. However, since it is more convenient to remove the upward refractory bricks 36, 36X by providing an extrusion through hole 32B for applying a pressing force to the bottom surface of the upward refractory bricks 36, 36X, this third embodiment In the fireproof version 30 according to the above, extrusion through holes 32B are also provided for applying a pressing force to the bottom surfaces of the upward facing firebricks 36, 36X.

Note that the downwardly inclined side surfaces 34A of the downwardly directed firebricks 34, 34X are inclined surfaces formed such that the side farther from the bottom surface protrudes toward the upwardly directed refractory bricks 36, 36X than the side closer to the bottom surface; The upwardly inclined side surface 36A can also be expressed as an inclined surface formed so that the side closer to the bottom projects toward the downward firebricks 34, 34X than the side farther from the bottom.

In addition, although the refractory bricks 34, 34X, 36, and 36X constituting the fireproof plate 30 according to the third embodiment use inclined side surfaces for the side surfaces extending in the Y direction, it is also possible to use inclined side surfaces for the side surfaces extending in the X direction. Also, if the side surfaces are in contact with each other, the inclined side surface may be replaced with a side surface having a step that can be fitted together, or a side surface having unevenness that can be fitted together.

(4) Supplement The fireproof version 10 according to the first embodiment is constructed by laying a plurality of firebricks 14 on one side of the bottom plate 12 so that their sides are in contact with each other. It is not essential that the sides be in contact with each other, and they may be arranged closely together with a slight gap that prevents combustion gas from passing through. The same applies to the fireproof plates 20 and 30 according to the second and third embodiments.

In the bottom plates 12, 22, 32 of the fireproof plates 10, 20, 30 according to the first to third embodiments, fixing through holes 12A, 22A, 32A and extrusion through holes 12B, 22B, 32B are separately provided. However, after removing the regulating member 16 from the fixing through holes 12A, 22A, 32A without providing the extrusion through holes 12B, 22B, 32B, the refractory bricks 14, 24 are removed from the fixing through holes 12A, 22A, 32A. , the downward refractory bricks 34, 34X may be pressed in a direction opposite to the direction of the bottom plates 12, 22, 32 to remove the refractory bricks 14, 24 and the downward refractory bricks 34, 34X. That is, the fixing through holes 12A, 22A, and 32A may also function as extrusion through holes.

Further, for example, the firebricks 14, 26 and the downward firebricks 34, 34X can be connected using the regulating member 16, which uses a threaded rod member as the shaft portion 16A and a nut screwed thereon as the holding portion 16B. When fixed, simply remove the holding part 16B (nut) from the shaft part 16A, but do not remove the shaft part 16A from the refractory bricks 14, 26 and the downward refractory bricks 34, 34X. , 26. The refractory bricks 14, 26 and the downward refractory bricks 34, 34X may be removed by pressing the downward refractory bricks 34, 34X in a direction opposite to the direction of the bottom plates 12, 22, 32.

Also, without providing the holding part 16B, only a rod-shaped member is used as the shaft part 16A, and the shaft part 16A is passed through the fixing through holes 12A, 22A, 32A, and one end of the shaft part 16A is connected to the firebricks 14, 26, downward facing firebrick. By fixing to the fixing holes 14A, 26A, 34B of 34, 34X, the refractory bricks 14, 26 and the downward refractory bricks 34, 34X move their positions on the bottom plates 12, 22, 32 (here, the bottom plate 12 . ). In this case, since the holding part 16B is not provided, when removing the refractory bricks 14, 26 and the downward refractory bricks 34, 34X, the refractory bricks 14, 26 and the downward refractory bricks 34, 34X are attached to the bottom plate via the shaft part 16A. It can be removed by pressing in the opposite direction to the directions of 12, 22, and 32, and the effort required for removal is reduced.

In addition, the shaft portion 16A has a threaded rod-like structure, and the inner circumferential surfaces of the fixing through holes 12A, 22A, and 32A of the bottom plates 12, 22, and 32 are also threaded accordingly to fix the shaft portion 16A. While screwing into the through holes 12A, 22A, 32A, the bottom plates 12, 22, 32 are penetrated, and fixed by screwing into the fixing holes 14A, 26A, 34B of the refractory bricks 14, 26, downward facing refractory bricks 34, 34X. With this configuration, even if a separate holding part 16B is not provided, movement in the direction away from the bottom plates 12, 22, 32 is also restricted, and the bottom plates 12, 22 of the refractory bricks 14, 26 and the downward refractory bricks 34, 34X , 32 can be stably restricted and fixed, such a configuration may be adopted.

10, 20, 30...Fireproof version 12, 22, 32...Bottom plate 12A, 22A, 32A...Through hole for fixing 12B, 22B, 32B...Through hole for extrusion 12C...Side wall 14, 24, 26...Firebrick 14A, 26A, 34B...Fixing hole 16...Regulation member 16A...Shaft part 16B...Holding part 18...Reinforcement member 34, 34X...Downward inclined firebrick 34A...Downward inclined side surface 36, 36X...Upward inclined firebrick 36A...Upward inclined side surface

Claims (14)

The bottom plate and
a plurality of fireproof bricks laid out and arranged on the bottom plate;
a regulating member that regulates movement of the firebrick on the bottom plate;
Equipped with
The regulating member has a shaft portion that penetrates the bottom plate from a surface of the bottom plate opposite to the firebrick arrangement side and projects toward the firebrick side, and the shaft portion protrudes toward the firebrick side. regulating the movement of the position of the firebrick on the bottom plate by inserting a portion into the firebrick from the bottom surface of the firebrick facing the bottom plate;
A fireproof plate characterized in that the bottom plate is provided with a through hole through which a bottom surface of the firebrick can be pressed. The regulating member includes a holding portion provided on the shaft portion, and the holding portion further restricts movement of the refractory brick in a direction away from the bottom plate. Fireproof version. The bottom plate and
a plurality of refractory bricks laid out and arranged on the bottom plate;
a regulating member that regulates movement of the firebrick on the bottom plate;
Equipped with
The regulating member has a shaft portion that penetrates the bottom plate from a surface of the bottom plate opposite to the firebrick arrangement side and projects toward the firebrick side, and the shaft portion protrudes toward the firebrick side. restricting movement of the position of the firebrick on the bottom plate by inserting a portion into the firebrick from the bottom surface of the firebrick facing the bottom plate;
Among the adjacent refractory bricks, one side surface of one refractory brick and one side surface of the other refractory brick are such that the movement of the one refractory brick on the bottom plate is restricted by the regulating member. In this way, the other refractory bricks are also arranged so as to overlap each other so as to be restricted from moving in a direction away from the bottom plate via the one refractory brick,
A fireproof plate characterized in that the bottom plate is provided with a through hole so that the bottom surface of the one firebrick can be pressed. The one side surface of the one refractory brick is an inclined surface formed such that the side farther from the bottom surface protrudes toward the other refractory brick side than the side closer to the bottom surface, and the one side surface of the other refractory brick 4. The fireproof plate according to claim 3, wherein is an inclined surface formed such that a side closer to the bottom surface projects toward the one refractory brick side than a side farther from the bottom surface. Any one of claims 1 to 4, wherein the through hole is a hole through which the shaft portion of the regulating member passes, and the refractory brick can be pressed in a direction opposite to the bottom plate through the through hole. Fireproof version as described in . The fireproof plate according to any one of claims 1 to 4, wherein the through hole is provided at a location different from a hole through which the shaft portion of the regulating member passes. The bottom plate and
a plurality of rectangular parallelepiped-shaped fireproof bricks laid out on the bottom plate;
Equipped with
The plurality of refractory bricks include a first refractory brick group arranged in a line in one direction, and a first refractory brick group adjacent to the first refractory brick group in a direction perpendicular to the one direction, including a second group of refractory bricks arranged in parallel, the positions of adjacent side surfaces of each refractory brick constituting the first refractory brick group, and the position of each refractory brick constituting the second refractory brick group. The positions of adjacent side surfaces are arranged so as to be staggered when viewed in a direction perpendicular to the first direction,
A fireproof plate characterized in that the bottom plate is provided with a through hole so that the bottom surface of the firebrick can be pressed. 8. The fireproof plate according to claim 1, wherein a reinforcing member is attached to a surface of the bottom plate opposite to the surface on which the firebricks are arranged. A rocket launch pad comprising the fireproof plate according to any one of claims 1 to 8. A rocket launch pad comprising a deflection plate formed by disposing the fireproof plate according to claim 7 obliquely around an axis in the one direction with respect to a horizontal surface. A method for replacing firebricks of a fireproof version according to claim 1 or 2, comprising:
a regulating member removal step of removing the regulating member that regulates the movement of the refractory brick to be replaced on the bottom plate among the refractory bricks;
A pressing force is applied from the through hole provided in the bottom plate to the refractory brick whose movement was regulated by the regulating member removed in the regulating member removal step, and the refractory brick is moved in the opposite direction from the bottom plate. A firebrick removal process in which the firebrick is removed by extrusion;
A firebrick replacement method characterized by comprising: A method for replacing firebricks of a fireproof version according to claim 1, comprising:
A refractory brick replacement method comprising a refractory brick removal step of applying a pressing force to the refractory brick via the shaft portion to push out the refractory brick in a direction opposite to the bottom plate and removing it. A method for replacing firebricks of a fireproof version according to claim 3, comprising:
Among the refractory bricks, the refractory brick to be replaced is the other refractory brick,
a regulating member removal step of removing the regulating member that regulates the movement of the one fireproof brick on the bottom plate that is holding down the other fireproof brick to be replaced;
A pressing force is applied from the through hole provided in the bottom plate to the one refractory brick whose movement was regulated by the regulating member removed in the regulating member removal step, and the one refractory brick is removed from the bottom plate. a first firebrick removal step in which the firebrick is removed by pushing it out in the opposite direction;
After removing the one firebrick in the first firebrick removal step, a second firebrick removal step of removing the other firebrick to be replaced;
A firebrick replacement method characterized by comprising: 11. A method for replacing the refractory bricks of the fireproof version provided as a deflection version on the rocket launch pad according to claim 10,
A refractory brick removal step in which a pressing force is applied to the refractory brick to be replaced among the refractory bricks through the through hole provided in the bottom plate, and the refractory brick to be replaced is pushed out in a direction opposite to the bottom plate and removed. Prepare,
A fireproof brick replacement method characterized in that even if the firebrick to be replaced is pushed out and removed from the bottom plate in the firebrick removal step, the positions of the other firebrick do not change.

Images