WO2021024354A1

WO2021024354A1 - Method for manufacturing frame structure, and frame structure

Info

Publication number: WO2021024354A1
Application number: PCT/JP2019/030730
Authority: WO
Inventors: 洋岸本; 安田　直弘
Original assignee: 日揮グローバル株式会社
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2021-02-11

Abstract

[Problem] When manufacturing a frame structure that supports piping, to lay out the piping in a desired direction at a desired position inside the frame structure. [Solution] A frame structure 3 in which a plurality of piping 5 is laid out, wherein a piping transport mechanism 4 is provided having a moving body 42 that moves along a rail 41 provided along the ceiling surface 32 of the frame structure 3, the moving body 42 being provided with a holding part 44 that is suspended and held so as to be able to rotate about a vertical axis in a state in which piping members 50 constituting the piping 5 are laterally oriented. It is thereby possible to transport the piping members 50 brought into the frame structure 3 to a desired setting position, and to lay out the piping members 50 in the desired direction.

Description

Manufacturing method of frame structure and frame structure

The present invention relates to a technique for manufacturing a frame structure for holding a pipe.

Plants that process fluid include natural gas plants that liquefy natural gas, separate and recover natural gas liquid, petroleum refining plants that distill and desulfurize crude oil and various intermediate products, petroleum chemical products and intermediate chemicals. There are chemical plants that produce products and polymers.
As described in Patent Document 1, these plants include, for example, static equipment such as tower tanks and heat exchangers, dynamic equipment such as pumps, and a large number of equipment such as piping provided between these static equipment and dynamic equipment. It has a structure in which groups are arranged. A pipe rack, which is a frame structure for supporting a large number of pipes for transferring and receiving fluids between the devices, is provided between these devices.

The pipe rack has, for example, an elongated planar shape and is composed of a frame having a plurality of hierarchical structures, and pipes are laid side by side in each of these layers. The main parts of each pipe are arranged side by side mainly along the long side direction of the pipe rack, but in some areas, the pipe is bent in the direction intersecting the long side direction. Have been placed.

When constructing (manufacturing) such a pipe rack, after assembling the frame that supports the pipes, the pipe members that form a part of the pipes are carried into the frame using a transport construction machine such as a crane. Will be done. The carried-in piping members are transported to the installation location, arranged in a preset direction, and then the adjacent piping members are connected to complete the laying of the piping.

However, in the construction of the plant, not only the construction of the pipe rack but also the construction of other frames and the installation of equipment are carried out in parallel on the limited site. In this respect, since the pipe rack is arranged so as to cross the site, it is necessary to arrange the construction machine for transportation and perform the transportation work of the piping member while avoiding interference with the construction machine related to other construction work. Must be. In this way, in order to construct a pipe rack under conditions where the arrangement of construction machines for transporting piping members is restricted, a large amount of piping members are transported to a predetermined position in the frame, and if necessary. Efficient implementation of work to adjust the placement direction has been required.

International Publication No. 2014/028961

The present invention has been made under such a background, and in manufacturing a frame structure for holding a pipe, a technique for laying a pipe at a desired position in the frame structure in a desired direction is provided. To provide.

The method for manufacturing a frame structure of the present invention is provided in a plant that processes a fluid, and transfers the fluid to and from the arrangement space between the support surface for supporting the piping and the ceiling surface on the upper side thereof. It is a manufacturing method of a frame structure in which multiple pipes are laid.
A rail provided in the arrangement space and extending along the ceiling surface, a moving body moving along the rail, and a piping member provided in the moving body and constituting the piping are oriented sideways. It is characterized by including a step of transporting and laying the piping member to a laying position by using a piping transport mechanism provided with a holding portion that rotatably suspends and holds the pipe member around a vertical axis in a state.

Further, the method for manufacturing the frame structure may have the following features.
(A) The arrangement space includes a parallel arrangement member which is a piping member arranged in parallel along the rail and an intersection arrangement member which is a piping member which is cross-arranged in a direction intersecting the rail. Bent piping should be placed.
(B) The parallel arrangement member laid on the support surface and the parallel arrangement member laid on the support surface and at a height position on the upper side of other pipes arranged in parallel along the rail. Including the cross-arranged member.
(C) A plurality of the bent pipes are laid in the arrangement space, and
The cross-arranged members included in each of the plurality of bent pipes are laid at a height position that interferes with the pipe members that are suspended and held by the holding portion and transported.
In the step of transporting and laying the piping member to the laying position, the cross-arranged member laid on the back side is directed to the cross-arranged member laid on the front side when viewed from the transport start position of the piping member. In order, these cross-arranged members shall be sequentially transported and laid.
(D) The arrangement space opens toward the side surface of the frame, and the rail reaches a position where the piping member carried in from the outside through the opening can be received and held by the holding portion. It must be provided so that it can be extended.
(E) A step of using a crane to carry the piping member to be laid into the arrangement space from the outside through the opening and holding the piping member in the holding portion.
(F) The frame structure has an elongated planar shape along the direction in which the rail extends when viewed in a plan view, the opening is opened toward one end side surface of the elongated planar shape, and the crane is The piping member to be laid shall be arranged at a position where it can be carried in toward the opening.
(G) The frame structure is provided with a plurality of air-cooled heat exchangers (ACHE) on the upper surface thereof.
It includes a step of transporting and installing the ACHE by the ACHE transport mechanism using the ACHE transport mechanism that transports the ACHE along the upper surface of the frame structure.
(H) Using a crane, a pipe member carried in from the outside toward the pipe transport mechanism and an ACHE carried in from the outside toward the ACHE transport mechanism are carried in.

The frame structure of the present invention is a frame structure provided in a plant that processes a fluid and has an arrangement space between a support surface for supporting a pipe and a ceiling surface on the upper side thereof.
A plurality of pipes laid in the arrangement space for transferring fluid between devices, and
In the arrangement space, a rail provided so as to extend along the ceiling surface, a moving body moving along the rail, and a holding portion provided on the moving body to suspend and hold an object to be transported. It is characterized by having a transport mechanism having a.

INDUSTRIAL APPLICABILITY In the manufacture of a frame structure in which a plurality of pipes for exchanging and receiving fluids are laid, the present invention includes a holding portion for rotatably suspending and holding a pipe member around a vertical axis in a horizontal state, and the rail. Since the pipe transport mechanism configured to be movable in the frame structure is used along the rail, the pipes can be efficiently transported and the orientation can be adjusted.

It is a top view which shows a part of a plant. It is an enlarged plan view which shows a part area of the hierarchy in a pipe rack. It is a vertical sectional front view of a pipe rack. It is a front view of a pipe transport mechanism. It is a side view of a pipe transport mechanism. It is a 1st explanatory view (plan view) which concerns on the laying process of a pipe. It is a 1st explanatory view (front view) which concerns on the laying process of a pipe. It is a 2nd explanatory view (plan view) which concerns on the laying process of a pipe. It is a 2nd explanatory view (front view) which concerns on the laying process of a pipe. It is a 3rd explanatory view (plan view) which concerns on the laying process of a pipe. It is a 3rd explanatory view (front view) which concerns on the laying process of a pipe. It is a perspective view which shows the whole structure of the ACHE transport mechanism. It is a 1st explanatory view which shows the installation process of ACHE. It is a 2nd explanatory drawing which shows the installation process of ACHE. It is a 3rd explanatory diagram which shows the installation process of ACHE.

FIG. 1 is a plan view showing a plant provided with a pipe rack which is a frame structure of the present invention. The plant shown in FIG. 1 is, for example, a processing plant for liquefied natural gas (LNG), which is a fluid, and is provided with a large number of devices 2 for performing pre-liquefaction treatment and liquefaction of natural gas after pretreatment. Further, a pipe rack 3 is provided so as to be surrounded by these devices 2 and support a pipe 5 for transferring various fluids handled in the LNG plant between the devices 2.

2 and 3 are a plan view and a side view showing the arrangement of pipes in the pipe rack 3. The pipe rack 3 has an elongated planar shape extending in the Y-axis direction in FIG. 1 when viewed in a plan view. As shown in FIG. 3, in the pipe rack 3, for example, a large number of sets of two columns 33 arranged to face each other are arranged along the longitudinal direction, and between the columns 33 arranged to face each other and adjacent to each other. It has a frame structure in which beams 30 are laid horizontally so as to connect the arranged columns 33. These beams 30 are arranged in a plurality of stages in the vertical direction to form a hierarchical structure of the pipe rack 3.

Hereinafter, the surface connecting the upper surface of the beam 30 along the longitudinal direction of the pipe rack 3 is referred to as the support surface 31 of the hierarchy, and the surface connecting the lower surface of the beam 30 located above the support surface 31 is referred to as the ceiling surface 32 of the hierarchy. Call. In the pipe rack 3, a plurality of pipes 5 are arranged in the arrangement space 300 between the opposite support surfaces 31 and the ceiling surface 32 of each layer.
It is not necessary that the beams 30 forming the support surface 31 and the ceiling surface 32 of each layer are physically connected by a grating material or a plate material, and the upper surface / lower surface of the adjacent beams 30 is virtually connected. It may be a surface connecting to.

Further, air-cooled heat exchangers (ACHE) 6 are arranged side by side on the upper surface of the pipe rack 3. Reference numeral 60 denotes a bay in which a plurality of units, for example, three ACHE6 units, are arranged side by side in the short side direction of the pipe rack 3. The ACHE 6 may not be arranged on the upper surface of the pipe rack 3.

The pipe rack 3 having the above configuration is not provided with a side wall portion, and the arrangement space 300 of each layer is open toward the side surface. In this example, the piping member 50 is carried in from the opening on the side surface of the pipe rack 3 on one end side (right end side when facing FIG. 1) in the long side direction. On the site where the plant is installed, on the side of one end side of the pipe rack 3 in the long side direction, a crane member, which is a construction machine for transportation, is placed at a position where the piping member 50 to be laid can be carried toward the opening. 100 is set.

As described above, the pipe 5 is configured by connecting a plurality of pipe members 50. For example, as shown in FIG. 2, the pipe 5 includes a parallel arrangement member 51, which is a pipe member 50 laid along the long side direction of the pipe rack 3 (the direction in which the rail of the pipe transport mechanism 4 described later extends), and a pipe. It includes a crossing arrangement member 52 which is a piping member 50 which is cross-arranged in a direction intersecting the long side direction of the rack 3. By combining these parallel arrangement members 51 and the cross arrangement member 52, a bent pipe can be formed.

As shown in FIGS. 2 and 3, a plurality of pipes 5 are arranged in parallel in the pipe rack 3 along the long side direction of the pipe rack 3, and the parallel arrangement member 51 included in each pipe 5 is a support surface 31. It is placed on top. On the other hand, the cross-arranged member 52 may be arranged so as to cross the upper side of the other pipe 5 toward the short side of the pipe rack 3. Further, the intersecting arrangement members 52 of the pipes 5 are arranged so as to be displaced from each other in the long side direction of the pipe rack 3 so as not to interfere with each other (FIG. 2).

Further, as shown in FIG. 3, each arrangement space 300 of the pipe rack 3 of this example is provided with a pipe transport mechanism 4 for transporting the pipe member 50. As shown in FIGS. 4 and 5, the pipe transport mechanism 4 is provided along the ceiling surface 32 of the arrangement space 300 so as to extend from one end to the other end in the long side direction of the pipe rack 3. It has. The end of the rail 41 extends to a position where the pipe transfer mechanism 4 can receive and hold the pipe member 50 carried in from the outside through the opening on the side surface of the crane arrangement area 100 side.

A moving body 42 is provided on the rail 41, and the moving body 42 is configured to be movable along the rail 41 on the lower side thereof. The moving body 42 is provided with a ring 43 provided so as to project downward. A holding portion 44 for holding the piping member 50 is provided below the moving body 42. The holding portion 44 includes, for example, a chain block 45 provided with a hook 45a, and the hook 45a is hung on a ring 43 on the moving body 42 side and held. Further, on the lower surface of the chain block 45, for example, two chains 46 for holding the piping member 50 are provided.

The two chains 46 are formed in an annular shape having substantially the same length, and are hung downward from substantially the same position on the lower surface of the chain block 45, respectively.
A method of holding the piping member 50 in the holding portion 44 having the above configuration will be described. First, the piping member 50 is inserted into the annular portion on one side of the two chains 46, and one chain 46 is fixed at a position closer to one end of the piping member 50 by, for example, a band. Next, the piping member 50 is also inserted into the annular portion of the other chain 46, and the other chain 46 is fixed at a position near the other end of the piping member 5.

At this time, from the height position for holding one end side of the piping member 50 (height position viewed from the height position of the support surface) and the height position for holding the other side of the piping member 50 (from the height position of the support surface). By aligning with the viewed height position), the piping member 50 can be suspended and held sideways in a substantially horizontal posture as shown in FIGS. 4 and 5.

Also, the two chains 46 are fixed at substantially the same position as the chain block 45. Therefore, the supported piping member 50 can be freely rotated around the vertical axis by rotationally moving the chain 46 extending obliquely downward from the fixed position. By this operation, the direction of the piping member 50 suspended from the holding portion 44 can be adjusted.

Subsequently, the operation of the present invention will be described. 6 to 8 are a plan view (A) and a front view (B) showing a process of transporting and laying the piping member 50 to the laying position. When laying the pipe 5 in the pipe rack 3, the crane arranged in the crane arrangement area 100 shown in FIG. 1 is used to open the pipe rack 3 from one end side (right end side when viewed from the front of FIG. 1). The piping member 50 is carried in. Hereinafter, in the specification, the crane arrangement area 100 side will be referred to as the “front side” of the pipe rack 3, and the opposite side when the pipe rack 3 is viewed from the front side will be referred to as the “back side”.

Even with the same piping member 50, the parallel arrangement member 51 and the cross arrangement member 52 may have a partially different shape, such as a bend being formed at the end of the intersection arrangement member 52. In this regard, in FIGS. 6 to 8, the shapes of the cross-arranged member 52 and the parallel-arranged member 51 are not distinguished, and are shown by a common straight pipe. Further, in FIGS. 6 to 8, in each plan view (A), the right-hand side shows the front side of the pipe rack 3 (direction in which the crane is arranged), and the left-hand side shows the back side of the pipe rack 3, and each front view (B). ) Indicates a state in which the back side is viewed from the front side.

In the examples shown in FIGS. 6 to 8, six pipes 5 are laid in the same layer of the pipe rack 3, but these pipes 5 are laid in parallel at the same time. First, using a crane, the piping member 50 to be laid (for example, the parallel arrangement member 51) is carried into the arrangement space 300 from the outside through the opening on the front side surface of the pipe rack 3. The parallel arrangement member 51 carried in is held in a posture in which the length direction thereof is along the longitudinal direction of the pipe rack 3 by the pipe transport mechanism 4, and is transported to the laying position. After that, the parallel arrangement member 51 is taken down from the pipe transport mechanism 4 and moved to a desired position in the short side direction of the pipe rack 3 for installation.
In this way, the parallel arrangement member 51 is laid by laying the parallel arrangement member 51 by transporting the parallel arrangement member 51 in the direction along the pipe rack 3 and lowering the parallel arrangement member 51 as it is without changing the direction. It can be performed. Then, the parallel arrangement member 51 is repeatedly conveyed and laid in order from the position on the back side in each arrangement space 300 (FIGS. 6A and 6B).

Subsequently, the transportation and laying work of the cross-arranged member 52 will be described. With the piping member 50 laid to the position shown in FIG. 6A, it is assumed that the work of laying the cross-arranged member 52 at the position designated by each of "* 1, * 2" is performed.
At this time, as described with reference to FIG. 3, the intersecting arrangement member 52 is arranged so as to cross the upper side of the other piping member 50 (parallel arrangement member 51), so that the cross arrangement member 52 is arranged from the support surface 31 of the arrangement space 300. If the height up to the ceiling surface 32 cannot be sufficiently increased, the piping member 50 conveyed by the piping transfer mechanism 4 and the already laid cross-arranged member 52 may interfere with each other.

In this case, if the crossing arrangement member 52 is laid from the front side (“* 2” side in the example shown in FIG. 6) close to the carry-in position, the crossing arrangement member 52 is laid on the back side (“* 1” side in the example shown in the figure). There is a risk that the piping member 50 cannot be transported toward the laying position.
Therefore, when laying the parallel arrangement member 51 using the pipe transport mechanism 4, the intersection laid on the back side when viewed from the carry-in position of the pipe member 50 (that is, corresponding to the transport start position of the pipe member 50). The arrangement member 52 is conveyed and laid in this order toward the cross arrangement member laid on the front side.

To give a specific example, first, a portion to be arranged below the cross-arrangement member 52 arranged at the position of "* 1" shown in FIG. 6 is laid. The cross-arranged member 52 carried in by the crane is suspended and held by the pipe transport mechanism 4 with its length direction toward the longitudinal direction of the pipe rack 3, and is transported to the laying position ((FIGS. 7A, 7B). 1)).

After that, for example, an operator pushes both ends of the cross-arranged member 52 suspended from the holding portion 44 by the chain 46 in the opposite direction. By this operation, the cross-arranged member 52 rotates around the vertical axis and its direction is directed to the laying direction ((2) in FIGS. 7A and 7B).
After that, the cross-arranged member 52 is lowered from the pipe transport mechanism 4 and transported to the laying position, and is connected to the pipe member 50 at a desired position that has already been laid ((3) in FIGS. 7A and 7B). At this time, the end portion of the cross-arranged member 52 shown in FIG. 7B is actually bent so as to receive it at the height position where the parallel-arranged member 51 is arranged and extend downward. As a result, when the cross-arrangement member 52 is connected to the end of the parallel arrangement member 51, the cross-arrangement member 52 is arranged on the upper side of the piping member 50 laid next to the parallel arrangement member 51.

Subsequently, a short parallel arrangement member 51 is connected to the cross arrangement member 52 laid at the above-mentioned "* 1" position, a cross arrangement member 52 is further connected to the end thereof, and then the parallel arrangement member 52 is again connected. Connect 51. By this laying work, the U-shaped bent pipe shown in FIG. 8A can be arranged.

When the laying of the cross-arrangement member 52 on the back side is completed, the cross-arrangement member 52 on the front side to be arranged at the position "* 2" in FIG. 6A is laid. When the portion formed by the cross-arranged members 52 is long, a plurality of cross-arranged members 52 may be connected.
As described above, in this example, the piping 5 to be arranged in the arrangement space 300 is a piping member laid on the front side from the piping member 50 laid on the back side when viewed from the transport start position of the piping member 50. Piping members 50 are laid in the order toward 50. Further, when laying the portion formed by the cross-arrangement member 52, the cross-arrangement member 52 on the inner side is laid in order.

According to the above-described embodiment, in the construction (manufacturing) of the pipe rack 3 in which the plurality of pipes 5 are laid, the holding portion 44 that rotatably suspends and holds the pipe member 50 around the vertical axis in a horizontal state is provided. The pipe member 50 is transported by using the pipe transport mechanism 4 which is configured to be movable in the pipe rack 3 along the rail 41. As a result, a large number of piping members 50 can be efficiently transported to a desired set position.

Further, since the direction of the piping member 50 can be adjusted by the piping transfer mechanism 4, it is necessary to arrange a crane in the vicinity of the laying position in order to adjust the direction of the piping member 50 at the laying position of the piping member 50. Absent. As a result, it is possible to reduce the number of installations of the crane arrangement area 100 for the purpose of carrying in or changing the direction of the piping member 50, and to reduce interference with construction machinery used for other construction work.

Further, in the step of transporting and laying the piping member 50 to the laying position, the present invention is laid on the front side from the crossing arrangement member 52 laid on the back side when viewed from the transport start position of the piping member 50. These cross-arranged members 52 are sequentially conveyed and laid in the order of being directed toward the cross-arranged members 52. By laying in this procedure, even if the height of the transport path of the piping member 50 conveyed by the piping transfer mechanism 4 and the arrangement height of the intersection arrangement member 52 interfere with each other, a plurality of intersection arrangement members 52 Can be placed at the same height position.
Further, since the height of the transport path of the piping member 50 and the arrangement height of the cross arrangement member 52 can interfere with each other, the height dimension of the arrangement space 300 can be reduced, and the height of the pipe rack 3 can be suppressed. Can be done. As a result, the steel material required for the construction of the pipe rack 3 can be suppressed.

Further, in the present invention, the side surface of the elongated flat pipe rack 3 on one end side in the long side direction is opened to provide an opening for carrying in the piping member 50. The rail 41 of the pipe transport mechanism 4 is provided from the position of the opening to the position on the other end side of the pipe rack 3 in the long side direction. Therefore, the arrangement area 100 of the crane that carries in the piping member 50 can be limited to the position on the side of the pipe rack 3 on one end side in the long side direction.
It should be noted that openings for carrying the piping member 50 are provided on the one end side side surface and the other end side side surface in the long side direction of the pipe rack 3, and rails 41 extending from the positions of the openings to the center of the pipe rack 3 are provided on each rail. The pipe transfer mechanism 4 may be provided in 41.

Hereinafter, a technique for transporting the ACHE 6 onto the pipe rack 3 using the ACHE transport mechanism (trolley) 7 will be described with reference to FIGS. 9 to 12. For example, in the pipe rack 3, as shown in FIG. 1, a plurality of ACHE6s are arranged side by side over the entire upper surface thereof. When installing the ACHE6, for example, it is lifted above the pipe rack 3 by a crane and installed, but the range in which the ACHE6 can be delivered by the crane is limited to a very narrow range around the arrangement area 100 of the crane. Therefore, in order to install the ACHE 6 on the entire upper surface of the pipe rack 3, it is necessary to set a large number of crane arrangement areas 100 around the pipe rack 3, and there is a problem that a wide area is required.

Therefore, in the embodiment of the present invention, the arrangement area 100 of the crane is limited to the side of one end side in the long side direction of the pipe rack 3, and the ACHE carried in by the crane is in the long side direction along the upper surface of the pipe rack 3. A trolley 7 that conveys from one end side to the other end side is used.

The trolley 7 is provided with a base 70, and a trapezoidal ACHE mounting portion 71 on which the ACHE 6 is mounted is provided above the base 70. Further, the base 70 is provided with an elevating mechanism 72 for raising and lowering the ACHE mounting portion 71 with respect to the base 70. Rails 73 extending in the long side direction of the pipe rack 3 are provided on the upper surface of the pipe rack 3 and both ends in the short side direction of the pipe rack 3, and the trolley 7 is arranged so as to straddle the two rails 73. , It is configured to be movable along the rail 73.
In the present embodiment, as shown in FIG. 10, three ACHE6s installed in the pipe rack 3 are installed side by side in the long side direction of the rectangular bay 60, for example. Further, support portions 61 for supporting the bay 60 and the ACHE 6 are provided on the lower surfaces of both ends of the bay 60 in the long side direction.

Then, the crane arranged in the crane arrangement area 100 shown in FIG. 1 raises the ACHE 6 installed in the bay 60 and conveys it above the trolley 7. The jig 101 in FIG. 10 is a jig for dispersing the weight of the bay 60 when the bay 60 is raised. At this time, the trolley 7 stands by at the end of the upper surface of the pipe rack 3 on the crane arrangement area 100 side as described above, with the ACHE mounting portion 71 raised as shown in FIG.

In the ACHE 6, the long side direction of the bay 60 is held in the direction along the short side direction of the pipe rack 3, and as shown in FIG. 11, two support portions 61 are arranged so as to sandwich the trolley 7, and the ACHE 6 is placed. It is placed in the part 71. At this time, the support portion 61 is held in a state of floating from the upper surface of the pipe rack. Then, the trolley 7 holding the ACHE 6 moves the upper surface of the pipe rack 3 from the crane placement area 100 side (front side) to, for example, the back end side. Then, as shown in FIG. 12, when the ACHE mounting portion 71 is lowered at the installation position of the ACHE 6, the support portion 61 is arranged on the upper surface of the pipe rack 3, and the support portion 61 is fixed to the upper surface of the pipe rack 3. ACHE6 is installed.
In this way, the trolley 7 receives the ACHE 6 on the crane arrangement area 100 side (front side), conveys it to the back side of the pipe rack 3, and installs the trolley 7 in order from the ACHE 6 installed on the back side.

According to the above-described embodiment, when a plurality of ACHE 6s are installed in the pipe rack 3, the ACHE 6 is transported and installed by using a trolley 7 that transports the ACHE 6 along the upper surface of the pipe rack 3. Since the trolley 7 that can move on the upper surface of the pipe rack 3 is used, the crane arrangement area 100 needs to be set only at the position where the ACHE 6 can be delivered.

Further, the crane for carrying in the piping member 50 carried in from the outside toward the pipe transfer mechanism 4 and the crane for lifting the ACHE 6 carried in from the outside toward the trolley 7 may be different, and both cranes may be different. The arrangement area 100 may be a different place or the same place. Further, the piping member 50 and the ACHE 6 may be carried in by using a common crane. In this case, it is not necessary to separately provide the arrangement area 100 of the crane for carrying in the piping member 50 and the arrangement area 100 of the crane for carrying in ACHE6, and the arrangement area 100 of the crane can be further limited. ..
In the above example, after the ACHE is delivered to the trolley using, for example, a crane, the piping member is transported using the crane until the ACHE 6 is transported to the installation position, installed, and the trolley 7 is returned to the delivery position of the ACHE 6. You may bring in 50.

The pipe rack 3 constructed by the above method is a natural gas plant that liquefies natural gas, separates and recovers natural gas liquid, an oil refining plant that distills and desulfurizes crude oil and various intermediate products, and petroleum. It may be installed in various plants such as a chemical plant that produces chemical products, intermediate chemicals, polymers, and the like.

3 Pipe rack 4 Piping transfer mechanism 5 Piping 31 Support surface 32 Ceiling surface 41 Rail 42 Moving body 43 Holding part 50 Piping member 300 Arrangement space

Claims

A frame structure provided in a plant that processes fluids, in which multiple pipes for transferring and receiving fluids are laid in the arrangement space between the support surface for supporting the pipes and the ceiling surface on the upper side thereof. It is a manufacturing method of
A rail provided in the arrangement space and extending along the ceiling surface, a moving body moving along the rail, and a piping member provided in the moving body and constituting the piping are oriented sideways. A frame structure comprising a step of transporting and laying the piping member to a laying position by using a piping transport mechanism provided with a holding portion that rotatably suspends and holds the pipe member around a vertical axis in a state. Production method.
In the arrangement space, a bent pipe including a parallel arrangement member which is a piping member arranged in parallel along the rail and an intersection arrangement member which is a piping member which is cross-arranged in a direction intersecting the rail. The method for manufacturing a frame structure according to claim 1, wherein the frame structure is arranged.
The bent pipe is laid at a height position on the upper side of the parallel arrangement member laid on the support surface and other pipes laid on the support surface and arranged in parallel along the rail. The method for manufacturing a frame structure according to claim 2, wherein the cross-arranged member is included.
A plurality of the bent pipes are laid in the arrangement space, and
The cross-arranged members included in each of the plurality of bent pipes are laid at a height position that interferes with the pipe members that are suspended and held by the holding portion and transported.
In the step of transporting and laying the piping member to the laying position, the cross-arranged member laid on the back side is directed to the cross-arranged member laid on the front side when viewed from the transport start position of the piping member. The method for manufacturing a frame structure according to claim 3, wherein these cross-arranged members are sequentially transported and laid in order.
The arrangement space opens toward the side surface of the frame, and the rail extends to a position where the piping member carried in from the outside through the opening can be received and held by the holding portion. The method for manufacturing a frame structure according to claim 1, wherein the frame structure is provided.
The frame structure according to claim 5, further comprising a step of carrying the piping member to be laid into the arrangement space from the outside through the opening and holding the piping member in the holding portion by using a crane. Production method.
When viewed in a plan view, the frame structure has an elongated planar shape along the direction in which the rail extends, the opening opens toward one end side surface of the elongated planar shape, and the crane reaches the opening. The method for manufacturing a frame structure according to claim 6, wherein the piping member to be laid is arranged at a position where it can be carried in.
The frame structure is provided with a plurality of air-cooled heat exchangers (ACHE) on the upper surface thereof.
The frame structure according to claim 1, further comprising a step of transporting and installing the ACHE by the ACHE transport mechanism using the ACHE transport mechanism that transports the ACHE along the upper surface of the frame structure. Production method.
The frame according to claim 8, wherein the piping member carried in from the outside toward the pipe transport mechanism and the ACHE carried in from the outside toward the ACHE transport mechanism are carried in by using a crane. Manufacturing method of structure.
A frame structure provided in a plant that processes fluid and having an arrangement space between a support surface for supporting piping and a ceiling surface on the upper side thereof.
A plurality of pipes laid in the arrangement space for transferring fluid between devices, and
In the arrangement space, a rail provided so as to extend along the ceiling surface, a moving body moving along the rail, and a holding portion provided on the moving body to suspend and hold an object to be transported. A frame structure comprising, and a transport mechanism having.