TW202138709A - Method of attaching and detaching heat insulation structure - Google Patents

Abstract

Provided is a method of attaching a heat insulation structure, which is capable of well insulating an object to be insulated and facilitating the work of attaching a heat insulation member. A recessed slot part (8), which is recessed in a circumferential direction from an end surface of a heat insulation member (P) facing another heat insulation member (P) adjacent to an object to be insulated (1) in a circumferential direction, is previously formed in the facing end surface. A connection member (7), which is elongated along the longitudinal direction of the heat insulation member (P), is previously formed while including a pair of engagement parts (7a) along the circumferential direction. The engagement parts (7a) are engaged with the respective recessed slot parts (8) of the heat insulation members (P) adjacent in the circumferential direction. When the heat insulation member (P) is attached to the object to be insulated (1), an arrangement step for arranging the heat insulation members (P) adjacent in the circumferential direction to an outer peripheral part of the object to be insulated (1) in a state which the facing end surfaces are butted with each other, and an insertion step for inserting the connection member (7) into the respective recessed slot parts (8) of the adjacent heat insulation members (P) are performed.

Description

Installation method and disassembly method of thermal insulation structure

The present invention relates to an installation method of a heat-insulating structure and a method of disassembling the heat-insulating structure. The heat-insulating structure is arranged side by side in the circumferential direction of a cylindrical or hollow spherical heat-insulated object cooled by a low-temperature fluid The heat insulation member insulates the heat insulation object in a state where the outer periphery of the heat insulation object is covered with the plurality of heat insulation members.

The heat-insulating structure uses a hollow spherical storage tank for storing low-temperature fluid such as LNG or a cylindrical pipe (cylindrical pipe) in which low-temperature fluid such as LNG flows as the heat-insulating object to cover the heat-insulating object Heat insulating members are arranged side by side in the state of the outer periphery of the object to insulate the heat-insulated object. That is, the outer periphery of the heat-insulating object cooled by allowing the low-temperature fluid to exist inside is insulated.

As a previous example of this heat-insulating structure, the outer circumference of a cylindrical pipe as an object to be insulated is covered with a pair of semi-cylindrical heat-insulating members, and the joint part of the pair of semi-cylindrical heat-insulating members is filled with polyurethane foam The foaming agent is foamed and solidified to join semi-cylindrical heat insulating members (for example, refer to Patent Document 1). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] JP 2002-295729 A

[The problem to be solved by the invention]

In the heat insulation structure of Patent Document 1, when the semi-cylindrical heat insulation member is installed (assembled) in the pipe, the joint portion of the pair of semi-cylindrical heat insulation members is filled with urethane foam foaming agent to join the semi-cylindrical shape Insulation members each other. In addition, when removing the semi-cylindrical heat insulation member from the pipe, it is necessary to cut appropriate portions of the pair of semi-cylindrical heat insulation members in a state of being joined with a polyurethane foam foaming agent to remove the semi-cylindrical heat insulation member from the pipe.

Therefore, it is necessary to perform the troublesome filling operation of polyurethane foam foaming agent to install the semi-cylindrical heat insulation member. Therefore, the installation work of the semi-cylindrical heat insulation member becomes a time-consuming and troublesome operation. Since the heat insulation becomes a thick semi-cylindrical heat insulating member, the disassembly operation of the semi-cylindrical heat insulating member becomes a troublesome work that takes time. Furthermore, since the semi-cylindrical heat insulating member is cut and removed, it is difficult to reuse the semi-cylindrical heat insulating member.

In addition, in order to facilitate the installation and removal of the semi-cylindrical heat insulation member, and to enable the reuse of the semi-cylindrical heat insulation member after disassembly, it is considered not to join a pair of semicircles with a polyurethane foam foaming agent. In the connection part of the cylindrical heat insulating member, in this case, a gap is formed between a pair of semi-cylindrical heat insulating members, so there is a problem that the pipe cannot be well insulated in the gap part.

The present invention was completed in view of the above-mentioned facts, and its object is to provide a method for installing a heat insulating member, which can well insulate the heat-insulated object, and can achieve the installation work of the heat-insulating member Easy. In addition, another object of the present invention is to provide a method for disassembling the heat insulating member, which facilitates the disassembling operation of the heat insulating member, and allows the heat insulating member to be reused. [Technical means to solve the problem]

The method of installing a heat-insulating structure of the present invention is that a plurality of heat-insulating members are arranged side by side in the circumferential direction of a cylindrical or hollow spherical heat-insulating object cooled by a low-temperature fluid. A plurality of heat-insulating members insulate the heat-insulated object in a state in which the outer periphery of the heat-insulated object is covered, and the characteristic structure is: The end face of the heat insulating member facing the other heat insulating member adjacent in the circumferential direction is previously formed with a recessed groove portion that is recessed from the opposite end face in the circumferential direction, which is along the long side of the heat insulating member And the width of the opening in the thickness direction of the heat-insulating member is provided on the inner side along the circumferential direction in a wider portion in the thickness direction than the opening width of the entrance portion along the thickness direction of the heat insulating member, The elongated connecting member along the longitudinal direction of the heat insulating member is formed in advance so that a pair of engaging portions are provided along the circumferential direction, and the engaging portions are engaged to be adjacent to the circumferential direction The aforementioned recessed grooves of each of the aforementioned heat insulating members, When the heat insulating member is attached to the heat-insulated object, it is carried out sequentially: the heat-insulating member adjacent to the circumferential direction is arranged on the heat-insulated object in a state where the opposing end faces abut against each other The arrangement process of the outer peripheral part and the insertion process of inserting the connecting member into the respective concave grooves of the adjacent heat insulating members.

That is, the end face of the heat-insulated object facing the heat-insulating member adjacent in the circumferential direction is previously formed with a recessed groove portion that is recessed from the opposed end face in the circumferential direction of the heat-insulated object, which is along the partition The thermal element has a groove shape in the longitudinal direction, and the opening width in the thickness direction of the heat insulating member is provided on the inner side along the circumferential direction in a wider part in the thickness direction than the opening width of the entrance part in the thickness direction. In addition, the elongated connecting member along the longitudinal direction of the heat-insulating member is formed in advance so that a pair of engaging parts are provided along the circumferential direction, and the engaging parts are engaged with adjacent to the heat-insulated object Each recessed groove of the heat insulating member in the circumferential direction of the object.

In addition, when the heat insulating member is installed on the heat-insulated object, it is performed sequentially: the heat-insulating member adjacent to the heat-insulated object in the circumferential direction is arranged on the heat-insulated object in a state where the opposing end faces abut against each other. The arrangement process of the outer periphery of the object, and the insertion process of the connection member into the respective recessed grooves of the adjacent heat insulation members.

In the state where the heat insulation member is installed on the outer periphery of the heat insulation object, the heat insulation member adjacent to the circumference of the heat insulation object is connected by the connection member, and the connection member is located in the adjacent heat insulation member It is possible to avoid the situation where a gap is formed between the adjacent heat insulating members between the opposed end surfaces of the heat insulating member, and it is possible to insulate the heat-insulated object well.

In addition, the installation of the heat insulation member on the heat insulation object is performed by inserting the connecting member into the recessed groove of the heat insulation member arranged on the outer periphery of the heat insulation object, so that the installation work of the heat insulation member can be achieved. Easy.

In short, according to the installation method of the heat-insulating structure of the present invention, the heat-insulated object can be well insulated, and the installation work of the heat-insulating member can be facilitated.

A further characteristic structure of the installation method of the heat-insulating structure of the present invention, wherein the heat-insulated object is a cylindrical tube in which the low-temperature fluid circulates, The heat insulating member is in the shape of a plate extending along the axial direction of the cylindrical tube and has an arc-shaped curved plate when viewed in the axial direction.

That is, a plurality of heat-insulating members in the shape of a plate extending along the axial direction of the cylindrical tube and arc-shaped curved plates when viewed in the axial direction are arranged in the cylindrical tube as the heat-insulating object The outer periphery of the cylindrical tube can be appropriately covered with a plurality of heat insulating members. Therefore, since the entire outer peripheral portion of the cylindrical pipe can be appropriately covered with a plurality of heat insulating members, the cylindrical pipe can be well insulated.

In short, according to the further characteristic structure of the installation method of the heat insulation structure of the present invention, the cylindrical pipe as the heat insulation object can be well insulated.

A further characteristic structure of the installation method of the heat-insulating structure of the present invention, wherein the heat-insulating member is installed in a state of three or more side by side along the circumferential direction, Before installing the heat insulating member on the cylindrical pipe, a pre-assembly process is performed on a part of the heat insulating member among the plurality of heat insulating members so that the heat insulating member adjacent to the circumferential direction is positioned in the aforementioned pair of heat insulating members. The end faces are abutted to each other, the connecting member is inserted into the recessed groove of each of the adjacent heat insulating members, and the assembly of the heat insulating member assembled in the pre-assembly process is arranged in the arrangement process.

That is, when the cylindrical pipe has a large diameter, etc., the heat insulating member is installed in a state of three or more side by side along the circumferential direction. Moreover, when such a heat-insulating member is installed in a state where three or more are arranged side by side along the circumferential direction, before the heat-insulating member is installed on the cylindrical pipe, the heat-insulation of a part of the plurality of heat-insulating members The component undergoes a pre-assembly process in which the insulating members adjacent in the circumferential direction are positioned in a state where the opposed end faces are abutted with each other, and the connecting member is inserted into the aforementioned recessed groove of each of the adjacent insulating members.

That is, the pre-assembly process, for example, is to place the insulating members adjacent to the circumferential direction in a posture that stands on a placement surface such as the ground, and connect the members to the recessed grooves of the insulating members. Inserting from above, etc., can be performed as a simple operation.

Therefore, among the thermal insulation members arranged in a state where three or more are arranged side by side in the circumferential direction, there are components of thermal insulation members that are connected in advance by connecting members by a pre-assembly process, so the components of the thermal insulation member In the arrangement process described above, it is arranged on the outer circumference of the cylindrical pipe, and the heat insulating member can be installed in a state where three or more of the heat insulating members are arranged side by side in the circumferential direction, so that the installation work can be facilitated.

In other words, since there are components of heat insulation members that are connected by connecting members in advance by a pre-assembly process, the components are arranged on the outer circumference of the cylindrical tube and will be arranged in a state of three or more side by side along the circumferential direction. The installed heat-insulating member is attached to the outer peripheral part of the cylindrical pipe, thereby facilitating the installation work of installing the heat-insulating member in a state where three or more heat-insulating members are arranged side by side in the circumferential direction.

In short, according to the further characteristic structure of the installation method of the heat-insulating structure of the present invention, the installation work of installing the heat-insulating member in a state where three or more heat-insulating members are arranged side by side in the circumferential direction can be facilitated.

A further characteristic structure of the installation method of the heat-insulating structure of the present invention, wherein, as the heat-insulating member, plural kinds of heat-insulating members with different radii of curvature are provided, and these are the heat-insulating members that have been installed previously The outer peripheral part of the above-mentioned heat-insulating member is installed to form a plurality of heat-insulating layers in the radial direction of the cylindrical pipe, When attaching the heat insulation member to the heat insulation object, a plurality of types of the heat insulation members are installed in a form in which the heat insulation member with the smaller radius of curvature among the heat insulation members is installed first.

That is, as the heat-insulating member, plural kinds of heat-insulating members with different radii of curvature are provided, and these are in the form of installing other heat-insulating members on the outer periphery of the heat-insulating member that was installed first, and then the cylindrical tube A plurality of heat insulating layers are formed in the radial direction.

In addition, when installing the heat-insulating member to the heat-insulated object, a plurality of types of heat-insulating members are installed in a form in which the smaller the radius of curvature of the heat-insulating members is, the earlier the heat-insulating members are installed, thereby forming a plurality of A thermal insulation layer. Therefore, the cylindrical pipe can be covered with a plurality of heat insulating layers, so that the cylindrical pipe can be more appropriately insulated.

In short, according to the further characteristic structure of the installation method of the heat-insulating structure of the present invention, the cylindrical pipe can be more appropriately insulated.

A further characteristic structure of the installation method of the heat-insulating structure of the present invention, wherein, for at least a part of the heat-insulating layer on the inner side among the plurality of heat-insulating layers, the concave groove portion is not formed, and the concave groove is not formed. The aforementioned connecting member is inserted into the groove portion to configure the aforementioned heat-insulating member.

That is, when the cylindrical pipe is covered with a plurality of heat insulating layers, for at least a part of the heat insulating layer on the inner side among the plurality of heat insulating layers, no recessed groove is formed, and no recessed groove is formed. The heat insulating member is arranged by inserting the connecting member. In other words, in view of the fact that the insulating layer on the inner side among the plurality of insulating layers is covered by the insulating layer on the outer side and is maintained in an appropriate posture, the At least a part of the heat insulating layer on the inner side is not formed with a recessed groove, and the heat insulating member is arranged without inserting a connecting member in the recessed groove.

Therefore, since at least a part of the heat insulating layer on the inner side among the plurality of heat insulating layers has no recessed grooves formed, and no connecting member is inserted into the recessed grooves, the time for forming the recessed grooves is saved, and, The amount of connecting members used can be reduced, and the simplification and cost reduction of the heat insulation structure can be achieved.

In short, according to the further characteristic structure of the installation method of the thermal insulation structure of the present invention, the simplification and cost reduction of the thermal insulation structure can be achieved.

A further characteristic structure of the installation method of the thermal insulation structure of the present invention, wherein the thermal insulation member is arranged such that the opposing end surfaces of the thermal insulation member adjacent to the circumferential direction are positioned opposite to each other in a state of butting The part is that the phase in the circumferential direction is different from that of the heat-insulating layer adjacent to the radial direction among the plurality of heat-insulating layers.

That is, in the case of covering the cylindrical pipe with a plurality of heat insulating layers, the heat insulating member is arranged such that the opposed end surfaces of the heat insulating member adjacent to the circumferential direction are located at the opposing part of the state in which they abut against each other. Among the plurality of heat-insulating layers, the phase in the circumferential direction is different from that of the heat-insulating layer adjacent to the radial direction.

Therefore, in the heat-insulating layer adjacent to the radial direction among the plurality of heat-insulating layers, since the opposing end faces of the heat-insulating members adjacent to the circumferential direction are located in the opposing parts of the state in which they abut, the phases in the circumferential direction are It is different. Therefore, the opposite part of the insulating member adjacent to the circumferential direction will be located in the part of the non-opposing part of the insulating member of the other insulating layer, so the insulating member adjacent to the circumferential direction can be properly secured The heat insulation of the opposite part.

That is to say, among the plurality of heat insulating layers, in the heat insulating layer adjacent to the radial direction, if the opposed end faces of the heat insulating members adjacent to the circumferential direction are located at the opposing parts in the state of butting, the If the phases are the same, there is a risk that the thermal insulation properties will decrease at the opposing part of the thermal insulation member adjacent to the circumferential direction. However, among the plurality of thermal insulation layers, the thermal insulation layer adjacent to the radial direction may The opposing end faces of the circumferential heat insulating member are located at the opposing parts in a state of butting each other, and the phases in the circumferential direction are different, so that the heat insulation of the opposing parts of the heat insulating member adjacent to the circumferential direction can be appropriately ensured .

In short, according to the further characteristic structure of the installation method of the thermal insulation structure of the present invention, the thermal insulation of the opposing portion of the thermal insulation member adjacent to the circumferential direction can be appropriately ensured.

In a further characteristic structure of the method of installing the heat insulating structure of the present invention, the recessed groove portion has a form including: a circumferential recessed portion recessed from the entrance portion along the circumferential direction, and from the circumferential direction The end of the recessed portion is recessed toward the outside in the aforementioned radial direction, which is the radial recessed portion of the aforementioned wide portion, When the connecting member is not inserted, the portion of the recessed groove portion of the end face that is located on the inner side in the radial direction is cut out, and the cut portion is formed on the outer side in the radial direction to the outer side in the radial direction. The square recessed locking recess, The elongated connecting member along the longitudinal direction of the heat insulating member is formed in advance in a state in which a pair of locking protrusions are provided along the circumferential direction, and the locking protrusions engage adjacent to the aforementioned The aforementioned locking recesses of each of the aforementioned heat insulating members in the circumferential direction, When the heat insulating members adjacent to the circumferential direction are arranged in a state where the opposed end faces are butted against each other, the locking recessed portion is engaged with the connecting member arranged in advance.

That is, the recessed groove portion is formed with the following portions: a circumferential recessed portion recessed in the circumferential direction from the entrance portion, and a recessed portion from the end of the circumferential recessed portion toward the radially outward direction A recessed portion in the radial direction as a wide portion.

In addition, it has a flange connecting the cylindrical tube, so that when the connecting member is not inserted, in other words, when the connecting member cannot be inserted, the portion of the concave groove of the end face that is located on the inner side in the radial direction is cut off. On the radially outer side of the cutout, a locking recess that is recessed radially outward is formed. In addition, the elongated connecting member along the longitudinal direction of the heat insulating member is formed in advance such that a pair of locking protrusions are provided along the circumferential direction, and the locking protrusions are engaged adjacent to the circumference The aforementioned locking recesses of the heat insulating members in the direction.

Therefore, when the connecting member is not inserted, in order to install the insulating member adjacent to the circumferential direction with the opposed end faces abutting each other, the connecting member arranged in advance is engaged with the locking recess of the insulating member. In addition, the heat insulating members adjacent to the circumferential direction are installed in a state where the opposed end faces abut against each other. In other words, it has a flange for connecting the cylindrical tube, so that even when the connecting member cannot be inserted, the heat insulating member formed with the locking recess is attached to the outer peripheral part of the cylindrical tube, and the cylindrical tube can be installed. Be insulated.

In short, according to the further characteristic structure of the installation method of the thermal insulation structure of the present invention, even when the connecting member cannot be inserted, the thermal insulation member formed with the recessed groove can be used to install the thermal insulation member on the circle. The outer circumference of the bobbin can heat the cylindrical tube.

A further characteristic structure of the installation method of the heat-insulating structure of the present invention, wherein the shaping process is performed before the insertion process, and the shaping process is to insert the connecting member into the concave groove of each of the adjacent heat-insulating members Or the aforementioned plastic surgery jig, The jig for shaping has the same shape as the connecting member in cross-section and longer than the connecting member, and at least the surface is configured to be harder than the surface of the connecting member.

That is, before performing the insertion process of inserting the connecting member into the respective concave grooves of the adjacent heat insulating members, the shaping process of inserting the connecting member or the shaping jig into the respective concave grooves of the adjacent heat insulating members is carried out, Thereby, the connecting member can be inserted well into the recessed grooves of the adjacent heat insulating members. The plastic jig has the same shape as the connecting member in cross-section, and is longer than the connecting member, and at least the surface is configured to be harder than the surface of the connecting member.

In other words, the shape of the recessed groove is slightly different from the normal shape due to manufacturing errors, etc., and it may be difficult to insert the connecting member into the recessed groove of each adjacent heat insulating member, but by The shaping process is performed, and the connecting member can be inserted into the recessed grooves of the adjacent heat insulating members well.

In addition, the shaping work must be carried out before the insertion work. However, when it is difficult to insert the connecting member into the recessed groove of the adjacent heat insulation member during the insertion work, the order of the shaping work may be carried out. .

In short, according to the further characteristic structure of the installation method of the heat-insulating structure of the present invention, the connecting member can be inserted into the recessed groove of the adjacent heat-insulating member well.

The method of disassembling a heat-insulating structure of the present invention, wherein the heat-insulating structure is arranged in the circumferential direction of a cylindrical or hollow spherical heat-insulated object cooled by a low-temperature fluid, and a plurality of heat-insulating members are arranged side by side. A plurality of heat-insulating members insulate the heat-insulated object in a state in which the outer periphery of the heat-insulated object is covered, and the characteristic structure is: The end face of the heat insulating member facing the other heat insulating member adjacent in the circumferential direction is formed with a recessed groove portion that is recessed from the opposite end face to the circumferential direction, which is along the longitudinal direction of the heat insulating member In the shape of a groove, and the opening width of the heat insulating member along the thickness direction of the entrance portion is provided with a wider portion that is wider in the thickness direction on the inner side along the circumferential direction, A connecting member is provided, which is elongated along the longitudinal direction of the heat insulating member, and is formed in a state in which a pair of engaging portions are provided along the circumferential direction, and the engaging portions are engaged with the adjacent Each of the recessed grooves of the heat insulating members in the circumferential direction, The heat-insulating members adjacent to the circumferential direction are mounted so as to be arranged on the outer periphery of the heat-insulated object in a state where the opposing end faces are abutted with each other, and for each of the recessed grooves of the adjacent heat-insulating members The form in which the aforementioned connecting member is inserted, When removing the heat insulation member from the heat insulation object, the following steps are performed in order: a cutting process of cutting the portion of the connecting member that connects the pair of engagement portions along the opposing end surface, and making the Detachment process in which the heat insulating member is detached from the aforementioned heat-insulated object.

That is, the end surface of the heat insulation member facing the other heat insulation member adjacent in the circumferential direction is formed with a recessed groove portion that is recessed in the circumferential direction of the heat insulation object from the opposite end surface, which is along the heat insulation member. The member has a groove shape in the longitudinal direction, and is provided with a wider portion wider in the thickness direction than the opening width of the entrance portion along the thickness direction of the heat insulating member on the inner side along the circumferential direction. In addition, the elongated connecting member along the longitudinal direction of the heat insulating member is formed in a state in which a pair of engaging portions are provided along the circumferential direction, and the engaging portion is engaged with the object adjacent to the heat-insulated object The respective recessed grooves of the thermal insulation members in the circumferential direction.

The form of attaching the heat insulation member to the heat insulation object is to make the heat insulation members adjacent to the circumferential direction be arranged on the outer periphery of the heat insulation object in a state where the opposing end faces are abutted with each other, and the distance between adjacent ones A form in which the recessed groove of the heating member allows the connecting member to be inserted. That is, the heat insulation member is installed in a state where the opposed end faces are butted against each other on the outer periphery of the heat insulation object, and the connecting member is inserted into the recessed groove of the adjacent heat insulation member, and The heat-insulated object is insulated.

In addition, when removing the heat-insulating member from the heat-insulated object, a cutting process of cutting the part of the connecting member that connects the pair of engaging parts along the opposite end surface and removing the heat-insulating member from Detachment process for detachment of heat-insulated objects.

As a cutting process, a cutter can be inserted between the opposite end surfaces of the heat insulation member adjacent to the circumferential direction, and the cutter can be moved along the opposite end surface, thereby moving the part of the connecting member that connects the pair of engaging parts along In the process of cutting the opposite end surface, the connecting member whose thickness is thinner than the heat insulation member is easily cut by the tool, and the opposite end surface can be used to guide the tool, etc., so that the tool can move well along the opposite end surface , So it can be easily cut off.

Moreover, if the part of the connecting member that connects the pair of engaging parts is cut along the opposite end surface, the connecting member will be divided into two, and the connecting member will be connected to the insulating member adjacent to the circumferential direction. Since it is released, it is possible to easily perform the detachment process for removing the heat insulation member from the heat insulation object.

In the heat insulation member separated from the heat-insulated object, the cut connecting member remains, but the remaining of the connecting member is, for example, inserted into the recessed groove through the entrance of the recessed groove. It can be easily removed from the heat-insulating member without damaging the heat-insulating member. As a result, the heat-insulating member can be reused.

In short, according to the method of disassembling the heat-insulating structure of the present invention, the disassembling operation of the heat-insulating member can be facilitated, and the heat-insulating member can be reused.

[Implementation form]

Hereinafter, an embodiment of the present invention will be described based on the drawings. (Overall structure of heat insulation structure) As shown in Figures 1 and 2, a cylindrical tube 1 (an example of a heat-insulating object) through which low-temperature fluid such as LNG or LPG flows and cools is provided, so that the urethane resin is developed. A plurality of heat insulating members P made of the foamed polyurethane foam are attached to the outer peripheral portion of the cylindrical tube 1 in a state of being aligned in the circumferential direction and the axial direction of the cylindrical tube 1.

The plurality of heat insulating members P are in the shape of a plate having a predetermined length extending along the axial direction of the cylindrical tube 1 and have an arc-shaped curved plate when viewed in the axial direction of the cylindrical tube 1. In other words, the heat insulating member P is formed in an arc shape (a semicircular shape in the present embodiment) along the circumferential direction of the cylindrical tube 1 with a certain thickness in the radial direction of the cylindrical tube 1. The cylindrical tube 1 has a long strip shape in the axial direction, and the base material formed into this shape is cut into a predetermined length in the axial direction of the cylindrical tube 1.

As shown in Fig. 5, in the following description, the surface on the outer side in the radial direction of the heat insulating member P is designated as the outer surface 3, and the surface on the inner side in the radial direction is designated as the inner surface 4. The end surface is designated as the opposite end surface 5, and the surfaces on both sides in the axial direction are designated as side surfaces 6. In addition, the reason why the surfaces at both ends in the circumferential direction are called the opposite end surfaces 5 is because the surfaces at both ends in the circumferential direction of a pair of heat insulating members P adjacent to each other in the circumferential direction of the cylindrical pipe 1 are arranged in abutting state. Thermal component P.

In this embodiment, as the heat-insulating member P, plural types of heat-insulating members P with different radii of curvature are provided, and these are in a form in which other heat-insulating members P are attached to the outer periphery of the heat-insulating member P that was installed earlier. To form a plurality of (three layers in this embodiment) heat insulation layers in the radial direction of the cylindrical tube 1. In addition, the heat insulating member P is installed so as to form a three-layer heat insulating layer along the radial direction of the cylindrical pipe 1. In other words, as a plurality of types (three in this embodiment) of heat insulating members P with different radii of curvature, the longest diameter heat insulating member PL, the middle diameter middle diameter heat insulating member PM, and the shortest heat insulating member P are provided Diameter short-diameter heat insulating material PS (refer to FIGS. 3 and 4).

In addition, in the state of the laminated thermal insulation member P, the outer surface 3 of the long-diameter thermal insulation member PL is located on the outermost side, and the inner surface 4 of the long-diameter thermal insulation member PL and the outer surface 3 of the intermediate-diameter thermal insulation member PM are parallel. Arranged in the same diameter, the inner surface 4 of the intermediate diameter heat insulation member PM and the outer surface 3 of the short diameter heat insulation member PS are arranged side by side in the same diameter shape, and the inner surface 4 of the short diameter heat insulation member PS is the same as the cylindrical tube The outer peripheral surfaces of 1 are arranged side by side in the same diameter.

As shown in FIG. 1, flanges F are provided at both ends of the cylindrical tube 1, and the flanges F of the adjacent cylindrical tube 1 are connected with bolts, thereby forming a flow path through which the low-temperature fluid flows. The plurality of heat insulating members P are installed in sequence from one end (left end in FIG. 1) of the cylindrical tube 1 to the other end (right end in FIG. 1), and are installed adjacent to the circle The part of one end of the bobbin 1, the part adjacent to the other end of the cylindrical tube 1, and the part corresponding to these.

The form in which the heat insulating members P are arranged in the axial direction of the cylindrical tube 1 is a form in which the shortest diameter heat insulating members PS are arranged in parallel and the longest diameter heat insulating member PL is arranged in parallel. In the same way, there is a difference in the form in which the middle diameter heat insulating members PM of the middle diameter are arranged side by side. That is, the short-diameter heat-insulating member PS, the middle-diameter heat-insulating member PM, and the long-diameter heat-insulating member PL are formed so that the length along the axial direction of the cylindrical tube 1 is the basic length (for example, 1 m).

Furthermore, regarding the short-diameter heat-insulating member PS and the long-diameter heat-insulating member PL, the basic-length heat-insulating member P is arranged from one end of the cylindrical tube 1 toward the other end. PM means that a half of the basic length (for example, 0.5 m) of the heat insulating member P is arranged side by side at one end of the cylindrical tube 1, and then the basic length of the heat insulating member P is arranged side by side toward the other end of the cylindrical tube 1. (Refer to Figure 1).

At the position adjacent to the other end of the cylindrical tube 1, the axial lengths of the short-diameter heat insulating member PS, the intermediate-diameter heat insulating member PM, and the long-diameter heat insulating member PL are matched to the axis of the cylindrical pipe 1 The length of the direction is appropriately determined. However, the length in the axial direction of the short-diameter heat insulating member PS, the intermediate-diameter heat insulating member PM, and the long-diameter heat insulating member PL that are installed adjacent to the other end of the cylindrical tube 1 is described later in order to form The length of the space of the connecting member 7 is configured to ensure a length of 1 m or more between the flanges F.

In addition, regarding the intermediate diameter heat insulating member PM, the intermediate diameter heat insulating member PM having a length of half of the basic length (for example, 0.5 m) is provided at a position adjacent to one end of the cylindrical tube 1, so that it is adjacent to the cylindrical tube In the other end portion of 1, the length in the axial direction of the intermediate diameter heat insulation member PM is different from the length in the axial direction of the short diameter heat insulation member PS and the long diameter heat insulation member PL. In this embodiment, the length in the axial direction of the intermediate diameter heat insulation member PM is made to be half of the basic length (for example, 0.5 m) Length of length.

In addition, in the middle part except the part adjacent to one end of the cylindrical tube 1 and the part adjacent to the other end of the cylindrical tube 1, the heat insulating member P is installed side by side in the circumferential direction of the cylindrical tube 1. The structure (hereinafter referred to as the basic installation structure) is the same, but in the part adjacent to the other end of the cylindrical pipe 1, the heat insulating member P is installed side by side in the circumferential direction of the cylindrical pipe 1 (hereinafter referred to as The end mounting structure) is a structure different from the basic mounting structure.

That is, in a section separated by 1 m or more from one end of the cylindrical tube 1, that is, the flange F described above, the heat insulating member P is installed in a basic installation structure using the connecting member 7 described later, and is adjacent to the cylindrical tube In the location of the other end of 1, the heat insulating member P is attached with the end attachment structure using the connecting member B described later. Next, the basic mounting structure and the end mounting structure will be described in order.

In addition, the area between the flange F of the cylindrical tube 1 and the heat insulating member P is filled with a heat insulating material D such as glass wool, and at a position corresponding to the upper part of the flange F of the cylindrical tube 1, In the same structure as the basic mounting structure, two layers of arc-shaped flange heat insulating members Q are provided.

(Basic installation structure) As shown in FIG. 6, the end face of the heat insulating member P facing the other heat insulating member P adjacent to the circumferential direction of the cylindrical tube 1 is previously formed with a recess that is recessed in the circumferential direction from the opposed end face 5 The groove 8 has a groove shape along the longitudinal direction of the insulating member P, and is wider than the opening width Hn of the entrance portion 8n along the thickness direction of the insulating member P in the thickness direction. The portion 8w has a state of being on the inner side along the circumferential direction. That is, the thickness direction of the heat insulating member P corresponds to the radial direction of the cylindrical pipe 1, and hereafter, the thickness direction is called a radial direction. In addition, the longitudinal direction of the heat insulating member P is a direction corresponding to the axial center direction of the cylindrical tube 1.

In this embodiment, the recessed groove portion 8 is formed to include the following portions: a circumferential recessed portion 8u that is linearly recessed from the entrance portion 8n along the circumferential direction, and a portion from the circumferential direction to form a wide portion 8w. The end portion of the recessed portion 8u is linearly recessed toward the radial direction outward of the radial recessed portion 8a. That is, in this embodiment, the recessed groove 8 is formed in an L-shape. In addition, in the above description, the circumferential direction of the cylindrical pipe 1 accurately refers to the tangential direction of the opposing end surface 5 of the heat insulating member P, and the following description is the same.

In addition, as the shape of the recessed groove 8, instead of the L shape, the circumferential recessed portion 8u and the radial recessed portion 8a are formed in a C-shaped form that is curved as a whole, and various shapes can be considered. In addition, other forms of the recessed groove 8 will be described later.

As shown in Figs. 5 and 7, the elongated connecting member 7 along the longitudinal direction of the heat insulating member P is formed in advance so that the main body portion 7A and the pair of engaging portions 7a extending in the circumferential direction extend along In the state provided in the circumferential direction, the engaging portion 7a is engaged with the recessed groove portion 8 of each of the heat insulating members P adjacent to the circumferential direction. In addition, the length of the connecting member 7 is formed to be the same length as the length in the axial direction of the heat insulating member P, and the connecting member 7 is made of urethane resin like the heat insulating member P.

Therefore, in the basic mounting structure, as shown in FIG. 4, a circular arc-shaped (semi-circular shape in the present embodiment) is divided in the circumferential direction of the cylindrical tube 1 by plural numbers (two in this embodiment). The member P is arranged in a state where the opposing end faces 5 abut each other, and each of the plural (two in this embodiment) opposing parts of the opposing end faces 5 in the circumferential direction of the cylindrical tube 1 , The long connecting member 7 along the axial direction of the cylindrical pipe 1 connects the opposing ends of a pair of adjacent heat insulating members P to each other, thereby installing the heat insulating member P on the cylindrical pipe The outer periphery of 1.

That is, in the basic mounting structure, when the heat insulating member P is mounted on the outer peripheral portion of the cylindrical pipe 1, as shown in FIG. The arrangement process of arranging the outer peripheral part of the cylindrical pipe 1 in a state where the opposed end faces are abutted with each other, and the insertion process of inserting the connecting member 7 into the respective recessed grooves 8 of the adjacent heat insulating members P. In addition, when installing the heat insulating member P on the outer peripheral portion of the cylindrical pipe 1, a plurality of types of heat insulating members are installed in a form in which the smaller the radius of curvature of the heat insulating member P is, the earlier the insulating member P is installed. P.

In detail, first, the short-diameter heat insulating member PS is installed on the outer peripheral surface of the cylindrical pipe 1, and then the intermediate-diameter heat insulating member PM is installed on the outer peripheral surface of the short-diameter heat insulating member PS, and finally, the long diameter The heat insulating member PL is attached to the outer peripheral surface of the intermediate diameter heat insulating member PM. As described above, in the state where the short diameter heat insulation member PS, the intermediate diameter heat insulation member PM, and the long diameter heat insulation member PL are installed, the outer peripheral portion of the cylindrical tube 1 is formed with a plurality of connecting members 7 connected Arc-shaped (two semicircular) heat-insulating members P, and using the heat-insulating member P to form plural (three) heat-insulating layers in a cylindrical shape with different diameters.

In addition, the opposing portion of the short-diameter heat insulation member PS in the state where the opposing end surfaces are butted against each other, and the opposing portion of the intermediate diameter heat insulation member PM in the state where the opposing end surfaces are butted against each other are on the circumference of the cylindrical pipe 1 The direction is shifted by 90 degrees. Similarly, the opposite part of the middle-diameter heat insulation member PM with the opposite end faces butting against each other, and the opposite part of the long-diameter heat insulation member PL with the opposite end faces butting against each other, The phase is shifted by 90 degrees in the circumferential direction of the cylindrical tube 1, and the short-diameter heat insulation member PS, the middle-diameter heat insulation member PM, and the long-diameter heat insulation member PL are mounted in this form.

In other words, when installing the heat insulating member P on the outer peripheral portion of the cylindrical pipe 1, the heat insulating member P is arranged so that the opposite end surfaces of the insulating member P adjacent to the circumferential direction are positioned in abutting state. The opposing part of the heat-insulating layer has a different phase in the circumferential direction from the heat-insulating layer adjacent to the radial direction among the plurality of (three) heat-insulating layers.

In addition, although illustration is omitted, a sheet covering the outer periphery of the laminated heat insulating member P is attached, and the reinforcement of the laminated heat insulating member P or the improvement of the heat insulating properties are sought.

(End mounting structure) In the end mounting structure, as shown in FIG. 8, the above-mentioned semicircular heat insulating member P, which is divided into two in the circumferential direction of the cylindrical pipe 1, is regarded as being divided into two in the circumferential direction of the cylindrical pipe 1. The end of the heat-insulating member PA is used. That is, as shown in FIG. 9, when the connecting member 7 is not inserted, the portion of the recessed groove 8 of the end face of the heat insulating member P located on the inward side of the radial direction is cut out, and the cut portion J The outer side in the radial direction is formed with a locking recess V that is recessed outward in the radial direction. That is, the radially concave portion 8a of the concave groove 8 is used to form the locking concave portion V that is concave outward in the radial direction.

As shown in FIG. 10, the elongated connecting member B along the longitudinal direction of the heat insulating member P is set in advance so that a pair of locking protrusions Ba are provided along the circumferential direction, and the locking The convex part Ba is engaged with the recessed part V for locking of each heat insulation member P adjacent to the circumferential direction. In addition, the length of the connecting member B is formed to be the same length as the length in the axial direction of the heat insulating member P, and the connecting member B is made of urethane resin like the heat insulating member P.

In addition, when the heat insulating member P (end heat insulating member PA) adjacent to the circumferential direction is arranged so that the opposed end faces 5 abut against each other, the heat insulating member P( The heat-insulating material PA) for an end part elastically deforms slightly, and it engages with the recessed part V for locking.

In detail, first, the coupling member B arranged on the outer peripheral surface of the cylindrical pipe 1 is engaged with the locking recess V to attach the short-diameter heat insulation member PS (end heat insulation member PA) to the cylinder The outer peripheral surface of the tube 1 is then engaged with the connecting member B arranged on the outer surface 3 of the short-diameter heat insulation member PS by engaging the locking recess V to engage the intermediate diameter heat-insulating member PM (end-use heat insulating material PA) It is installed on the outer surface 3 of the short-diameter heat insulating member PS, and finally, the locking recess V is engaged with the connecting member B arranged on the outer surface 3 of the intermediate-diameter heat insulating member PM, and the long-diameter heat insulating member PL (end It is installed on the outer surface 3 of the middle diameter heat insulation member PM with the heat insulation member PA).

In addition, when the connecting member B is arranged on the outer peripheral surface of the cylindrical pipe 1 or the outer surface 3 of the heat-insulating member P to be laminated first, the connecting member B is connected to the outer peripheral surface of the cylindrical pipe 1 or to the heat-insulating member P. The bottom surface in contact with the outer surface 3 is cut into a shape along the outer peripheral surface of the cylindrical pipe 1 or the outer surface 3 of the heat insulating member P. Moreover, when the connecting member B is arranged on the outer peripheral surface of the cylindrical tube 1 or the outer surface 3 of the heat insulating member P that is laminated first, if the connecting member B is arranged on the outer peripheral surface of the cylindrical tube 1 or laminated first In the case of the lateral position or the lower position of the outer surface 3 of the heat insulating member P, an adhesive may be used to temporarily fix the connecting member B.

As described above, in the state where the short-diameter heat-insulating member PS, the intermediate-diameter heat-insulating member PM, and the long-diameter heat-insulating member PL as the end heat-insulating member PA are installed, the outer circumference of the cylindrical tube 1 is formed There are a plurality of arc-shaped (two semicircular) heat-insulating members P connected by a connecting member 7, and the heat-insulating member P is used to form a plurality of (three) heat-insulating layers in a cylindrical shape with different diameters. Status to set.

In addition, although illustration is omitted, a sheet covering the outer periphery of the laminated heat insulating member P is attached, and the reinforcement of the laminated heat insulating member P or the improvement of the heat insulating properties are sought.

(About jigs for plastic surgery) As shown in FIG. 11, a shaping jig R is provided. The cross-sectional shape of the jig R is the same as that of the connecting member 7, longer than the connecting member 7, and at least the surface is harder than the surface of the connecting member 7. In this embodiment, a rigid urethane resin that is more rigid than the urethane resin used to make the connecting member 7 or the heat insulating member P is used to form the plastic jig R, The overall structure of the plastic jig R is harder than the connecting member 7.

Then, before performing the insertion process of inserting the connecting member 7 into the respective concave grooves 8 of the adjacent heat insulating members P, as shown in FIG. 11, insert and connect the respective concave grooves 8 of the adjacent heat insulating members P The shaping process of the component 7 or the shaping jig R.

In addition, this shaping process may be performed before the insertion process of inserting the connection member 7, but when it is difficult to insert the connection member 7 during the insertion process, the order of the shaping process may be performed.

(About the disassembly of the thermal insulation member) The heat insulating members P adjacent to the circumferential direction are arranged on the outer circumference of the cylindrical pipe 1 in a state where the opposed end faces abut against each other, and the connecting member 7 is inserted into the recessed grooves 8 of the adjacent heat insulating members P When detaching the heat insulating member P from the cylindrical pipe 1 in the state of being attached in the form, the following is performed in order.

That is, as shown in FIG. 12, the following steps are performed in sequence: a cutting process (shown by a solid line in the figure) of cutting the portion of the connecting member 7 that connects the pair of engaging portions 7a along the opposite end surface, and using The separation process of the heat insulating member P from the cylindrical pipe 1 (indicated by a broken line in the figure). Specifically, the cutter 10 is inserted between the opposing end surfaces 5 of the adjacent heat insulation member P, and the cutter 10 is moved toward the axis of the cylindrical tube 1 through the gap between the opposing end surfaces 5 of the adjacent heat insulation member P. By moving, a cutting process is performed, and a detachment process is performed, which detaches the heat insulating member P after the connection by the connection member 7 is released from the cylindrical pipe 1 by the cutting process.

In this embodiment, since the short-diameter heat insulation member PS, the middle-diameter heat insulation member PM, and the long-diameter heat insulation member PL are installed, first, as shown in FIG. The two connecting members 7 are cut along the opposite end surface 5, and the long-diameter heat insulating member PL is removed. Next, although the illustration is omitted, the two connecting members 7 about the intermediate diameter heat insulating member PM are moved along the opposite end surface. 5 to cut and remove the intermediate diameter heat insulation member PM. Finally, although the illustration is omitted, the two connecting members 7 of the short diameter heat insulation member PS are cut along the opposing end surface 5, and the short diameter is removed Insulation member PS.

In addition, in each of the thermal insulation members P after disassembly, there is a remaining part Z corresponding to half of the connecting member 7 after cutting. To move 8n to remove the remaining part Z, etc., it is only necessary to process the remaining part Z through the entrance portion 8n of the recessed groove 8 and remove the remaining part Z.

In addition, when excluding the remaining part, the part of the recessed groove 8 of the end face of the heat insulating member P located on the inward side in the radial direction may be cut off. In this case, as described above, the cut part J A locking recess V recessed outward in the radial direction is formed on the outer side in the radial direction, so the heat-insulating member P is used as the heat-insulating member PA for the end.

(Other embodiments) In the above-mentioned embodiment, when forming a three-layer heat insulation layer, it is comprised so that the connection member 7 may be inserted into the heat insulation member P which comprises each heat insulation layer adjacent to each other, and the adjacent heat insulation member P may be connected. This may be replaced, and as shown in FIG. 13, when forming a three-layer heat-insulating layer, for example, in the innermost heat-insulating layer, the connecting member 7 is not inserted into the adjacent short-diameter heat-insulating member PS, and It is configured in a form in which adjacent short-diameter heat insulating members PS are not connected.

That is, for at least a part of the heat insulating layer on the inner side among the plurality of heat insulating layers, the recessed groove 8 is not formed, and the heat insulating member P is arranged without inserting the connecting member 7 into the recessed groove 8.

(Other embodiments) In the above-mentioned embodiment, when forming a three-layer heat-insulating layer, the case where the heat-insulating member P which comprises each heat-insulating layer is formed in a semicircle shape in the circumferential direction is exemplified. As an alternative to this, in the case where the cylindrical pipe 1 has a long diameter, etc., as shown in FIG. In a structure in which the connecting member 7 is inserted into the insulating member P adjacent to the circumferential direction to connect the adjacent insulating members P, the insulating member P is installed in a state where three or more of the insulating members P are arranged side by side along the circumferential direction.

That is, in the above-mentioned embodiment, for example, the outer diameter of the cylindrical tube 1 is about 30 mm, while in this other embodiment, for example, the outer diameter of the cylindrical tube 1 is about 300 mm in the long diameter. Therefore, the heat insulating member P is formed in a 90-degree arc shape.

As described above, in the case where three or more heat insulating members P are arranged side by side in the circumferential direction, before the heat insulating member P is attached to the cylindrical pipe 1, it may be used for a plurality of heat insulating members P A part of the heat insulation member P is pre-assembled. The heat insulation member P adjacent to the circumferential direction is placed in a state where the opposed end faces are abutted with each other, and the respective recessed grooves 8 of the adjacent heat insulation members P are inserted Connecting member 7.

That is to say, for example, as shown in FIG. 14, when four heat insulation members P are arranged in the circumferential direction, the four heat insulation members P are assembled into two sets in advance by the pre-assembly process, and then sequentially Perform: the arrangement process of arranging the two sets of heat insulating members P assembled in advance on the outer circumference of the cylindrical pipe 1 and the insertion process of inserting the connecting member 7 may also be used.

In the case of such a pre-assembly process, as shown in FIG. 15, when the end mounting structure is arranged in the form of four end heat insulating members PA arranged in the circumferential direction, the four end parts are used The heat insulating members PA are assembled into two groups, and then the heat insulating members PA for the ends of the two groups assembled in advance can be assembled to the connecting member B.

(Other forms of recessed grooves and other forms) The recessed groove 8 has a groove shape along the longitudinal direction of the heat insulating member P, and becomes wider in the thickness direction than the opening width Hn of the entrance part 8n along the thickness direction of the heat insulating member P When the wide portion 8w is configured in a form along the circumferential direction, it may be configured in another form shown in Fig. 16 or another form shown in Fig. 17.

In the other form shown in FIG. 16 or another form shown in FIG. 17, the recessed groove 8 is formed to have the following parts: a circumferential recessed portion 8u that is recessed in the circumferential direction from the entrance portion 8n, In order to form the wide portion 8w, two radially concave portions 8a are recessed from the end of the circumferentially concave portion 8u toward the radially outer side and the radially inner side.

However, in the other form shown in FIG. 16, the two radial direction recessed parts 8a are triangular, and in the other form shown in FIG. 17, the two radial direction recessed parts 8a are circular. In addition, in the other form shown in FIG. 16 or another form shown in FIG. 17, the recessed groove 8 is provided with a radial recessed portion 8a that is recessed outwardly in the radial direction in order to form a wide portion 8w. When the connecting member 7 is not inserted, the portion of the recessed groove 8 of the end face of the heat insulating member P that is located on the inner side in the radial direction is cut out to form the radially outer side of the cutout J A locking recess V that is recessed on the outside.

(Other forms of connecting member) When the connecting member 7 is formed with a body portion 7A extending in the circumferential direction and a pair of engaging portions 7a engaged with the radially concave portion 8a, as shown in FIG. 18, the concave groove portion 8 is formed as In the case of other forms, the radially recessed portion 8a becomes a triangular shape, and in the case of another form, the radially recessed portion 8a becomes a circular shape.

In addition, FIG. 18, when installed in a state in which two insulating layers are formed by using a semicircular insulating member P, it is shown as follows: for the inner layer, another form is applied, and for the outer layer , Applicable to other forms of state.

[Other embodiments] Below, other embodiments are listed. (1) In the above-mentioned embodiment, although the case where the heat-insulating member P is divided into two semicircles along the circumferential direction of the cylindrical pipe 1 or the case where the heat-insulating member P is divided into four is exemplified, it is not limited to this. P may be divided into 3 or 5 or more parts along the circumferential direction of the cylindrical tube 1.

(2) In the above embodiment, although the heat insulating member P and the connecting member 7 and the connecting member B are formed of the same material, they are not limited to this. The connecting member B and the connecting member 7 are made of different materials from the heat insulating member P. It can also be formed.

(3) In the above embodiment, the material of the heat insulating member P is urethane resin, but the material of the heat insulating member P is not limited to this. For example, the material of the heat insulating member P may be polyethylene resin, polyisocyanurate (PIR), or the like.

(4) In the above-mentioned embodiment, although the case where three heat-insulating layers are formed as plural heat-insulating layers is exemplified on the outer peripheral portion of the cylindrical tube 1, it is also possible to form two heat-insulating layers. Yes, in addition, four or more heat insulating layers may be formed.

(5) In the above-mentioned embodiment, the heat-insulating object is the cylindrical tube 1, but the heat-insulating object is not limited to this. For example, the heat-insulated object may be configured as a hollow spherical storage tank in which low-temperature fluid W such as LNG is stored.

In addition, the structure disclosed in the above embodiment (including other embodiments, the same below) can be applied in combination with the structure disclosed in other embodiments as long as there is no contradiction, and the embodiment disclosed in this specification is an example. The embodiment of the present invention is not limited to this, and may be appropriately changed within a range that does not deviate from the purpose of the present invention.

1: Cylindrical pipe (object of heat insulation) 5: Opposite end face 7: Connecting components 7a: Snap part 8: Recessed groove 8a: Concave part in radial direction 8n: entrance 8u: Concave part in the circumferential direction B: connecting member Ba: Locking convex part Hn: opening width Hw: Broad Department J: Resection P: Thermal insulation V: Recess for locking

[Fig. 1] A longitudinal sectional side view showing the installation state of the heat insulating member. [Fig. 2] A cutaway perspective view showing the installed state of the heat insulating member and the end heat insulating member. [Fig. 3] A cutaway perspective view showing the installation state of the heat insulating member. [Fig. 4] The arrow view of the IV-IV line in Fig. 1. [Fig. 5] An exploded perspective view showing the relationship between the connecting member and the heat insulating member. [Fig. 6] A front view showing the recessed groove of the heat insulating member. [Fig. 7] A front view showing the connecting member. [Fig. 8] The arrow view along the line VIII-VIII in Fig. 1. [Fig. 9] A front view showing the installation procedure of the end heat insulating member. [Fig. 10] An enlarged perspective view of a part of the connecting member. [Fig. 11] A perspective view showing the relationship between the connecting member and the plastic jig. [Fig. 12] A front view showing the disassembly procedure of the heat insulating member. [Fig. 13] A front view showing an installed state of a heat insulating member of another embodiment. [Fig. 14] A front view showing an installed state of a heat insulating member of another embodiment. [Fig. 15] A front view showing the installed state of the heat insulating member for the end portion of still another embodiment. [Fig. 16] A front view showing another form of the recessed groove. [Fig. 17] A front view showing another form of the recessed groove. [Fig. 18] A front view showing another form of the connecting member.

1: Cylindrical pipe (object of heat insulation)

7: Connecting components

7A: Body part

7a: Snap part

8: Recessed groove

8a: Concave part in radial direction

P: Thermal insulation

PL: Long diameter insulation

PM: Intermediate diameter insulation

PS: Short diameter insulation

Claims (9)

A method of installing a heat-insulating structure in which a plurality of heat-insulating members are arranged side by side in the circumferential direction of a cylindrical or hollow spherical heat-insulated object cooled by a low-temperature fluid, and the aforementioned plural pieces The heat insulating member insulates the heat-insulated object in a state in which the outer periphery of the heat-insulated object is covered, and is characterized by: The end face of the heat insulating member facing the other heat insulating member adjacent in the circumferential direction is previously formed with a recessed groove portion that is recessed from the opposite end face in the circumferential direction, which is along the long side of the heat insulating member And the width of the opening in the thickness direction of the heat-insulating member is provided on the inner side along the circumferential direction in a wider portion in the thickness direction than the opening width of the entrance portion along the thickness direction of the heat insulating member, The elongated connecting member along the longitudinal direction of the heat insulating member is formed in advance so that a pair of engaging portions are provided along the circumferential direction, and the engaging portions are engaged to be adjacent to the circumferential direction The aforementioned recessed grooves of each of the aforementioned heat insulating members, When the heat insulating member is attached to the heat-insulated object, it is carried out sequentially: the heat-insulating member adjacent to the circumferential direction is arranged on the heat-insulated object in a state where the opposing end faces abut against each other The arrangement process of the outer peripheral part and the insertion process of inserting the connecting member into the respective concave grooves of the adjacent heat insulating members. The installation method of the thermal insulation structure according to claim 1, wherein: The heat-insulated object is a cylindrical tube in which the low-temperature fluid circulates, The heat insulating member is in the shape of a plate extending along the axial direction of the cylindrical tube and has an arc-shaped curved plate when viewed in the axial direction. The installation method of the thermal insulation structure according to claim 2, wherein: The aforementioned heat insulating member is arranged in a state of three or more side by side along the aforementioned circumferential direction, Before installing the heat insulating member on the cylindrical pipe, a pre-assembly process is performed on a part of the heat insulating member among the plurality of heat insulating members so that the heat insulating member adjacent to the circumferential direction is positioned in the aforementioned pair of heat insulating members. The end faces are abutted to each other, the connecting member is inserted into the recessed groove of each of the adjacent heat insulating members, and the assembly of the heat insulating member assembled in the pre-assembly process is arranged in the arrangement process. The installation method of the thermal insulation structure according to claim 2 or 3, wherein: As the aforementioned heat-insulating member, a plurality of types of heat-insulating members with different radii of curvature are provided. These are in the form of installing other heat-insulating members on the outer periphery of the heat-insulating member that has been installed first, and then attaching the other heat-insulating members to the cylindrical tube A plurality of heat insulation layers are formed in the radial direction, When attaching the heat insulation member to the heat insulation object, a plurality of types of the heat insulation members are installed in a form in which the heat insulation member with the smaller radius of curvature among the heat insulation members is installed first. The method of installing a heat-insulating structure according to claim 4, wherein, for at least a part of the heat-insulating layer on the inner side among the plurality of heat-insulating layers, the concave groove portion is not formed, and the concave groove is not formed in the concave portion. The aforementioned connecting member is inserted into the groove to configure the aforementioned heat-insulating member. The method for installing a heat-insulating structure according to claim 4 or 5, wherein the heat-insulating member is arranged such that the opposing end surfaces of the heat-insulating member adjacent to the circumferential direction are positioned in abutting state. The phase in the circumferential direction is different from that of the heat-insulating layer adjacent to the radial direction among the plurality of heat-insulating layers. The installation method of the thermal insulation structure according to any one of claims 2 to 6, wherein The recessed groove portion is in the form of a circumferential recessed portion recessed in the circumferential direction from the entrance portion, and recessed from the end of the circumferential recessed portion toward the outer side in the radial direction as the wide portion The concave part of the radial direction, When the connecting member is not inserted, the portion of the recessed groove portion of the end face that is located on the inner side in the radial direction is cut out, and the cut portion is formed on the outer side in the radial direction to the outer side in the radial direction. The square recessed locking recess, The elongated connecting member along the longitudinal direction of the heat insulating member is formed in advance in a state in which a pair of locking protrusions are provided along the circumferential direction, and the locking protrusions engage adjacent to the aforementioned The aforementioned locking recesses of each of the aforementioned heat insulating members in the circumferential direction, When the heat insulating members adjacent to the circumferential direction are arranged in a state where the opposed end faces are butted against each other, the locking recessed portion is engaged with the connecting member arranged in advance. The method of installing a heat insulating structure according to any one of claims 1 to 7, wherein Carry out the shaping work before the insertion work. The shaping work is to insert the connecting member or the shaping jig into the concave groove of each of the adjacent heat insulating members, The jig for shaping has the same shape as the connecting member in cross-section and longer than the connecting member, and at least the surface is configured to be harder than the surface of the connecting member. A method for disassembling a heat-insulating structure in which a plurality of heat-insulating members are arranged side by side in the circumferential direction of a cylindrical or hollow spherical heat-insulated object cooled by a low-temperature fluid, and the aforementioned plural pieces The heat insulating member insulates the heat-insulated object in a state in which the outer periphery of the heat-insulated object is covered, and is characterized by: The end face of the heat insulating member facing the other heat insulating member adjacent in the circumferential direction is formed with a recessed groove portion that is recessed from the opposite end face to the circumferential direction, which is along the longitudinal direction of the heat insulating member In the shape of a groove, and the opening width of the heat insulating member along the thickness direction of the entrance portion is provided with a wider portion that is wider in the thickness direction on the inner side along the circumferential direction, A connecting member is provided, which is elongated along the longitudinal direction of the heat insulating member, and is formed in a state in which a pair of engaging portions are provided along the circumferential direction, and the engaging portions are engaged with the adjacent Each of the recessed grooves of the heat insulating members in the circumferential direction, The heat-insulating members adjacent to the circumferential direction are mounted so as to be arranged on the outer periphery of the heat-insulated object in a state where the opposing end faces are abutted with each other, and for each of the recessed grooves of the adjacent heat-insulating members The form in which the aforementioned connecting member is inserted, When removing the heat insulation member from the heat insulation object, the following steps are performed in order: a cutting process of cutting the portion of the connecting member that connects the pair of engagement portions along the opposing end surface, and making the Detachment process in which the heat insulating member is detached from the aforementioned heat-insulated object.

Images