WO2024069924A1

WO2024069924A1 - Module for configuring plant and method for constructing plant

Info

Publication number: WO2024069924A1
Application number: PCT/JP2022/036680
Authority: WO
Inventors: 宏樹高橋; 亮太池谷
Original assignee: 日揮グローバル株式会社
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2024-04-04

Abstract

A module for configuring a plant according to the present disclosure serves as a first module in a plant configured such that the first module, which is provided with first piping and a first cable rack provided to a first structure, and a second module, which is provided with second piping and a second cable rack provided to a second structure, are connected to one another, wherein the module for configuring a plant comprises: the first structure; the first piping, which extends forward and rearward and which is provided in a plurality of steps at a rear end of the first structure such that the second piping is connected to the first piping from the rear; and the first cable rack, which is at a different lateral position than the first piping and which is provided to the rear end of the first structure such that the second cable rack is connected to the first cable rack from the rear.

Description

Module for plant configuration and plant construction method

The present invention relates to technology for constructing plants.

When constructing a plant, a method known as modular construction is sometimes used to reduce the amount of work at the construction site. In summary, this method involves assembling the multiple blocks that make up the plant individually as modules at a location called a module yard, which is separate from the plant construction site. In modular construction, each module is transported to the plant construction site by transport ship or other means, installed, and then connected to each other to complete the plant. The work of connecting modules at the construction site includes connecting piping between modules and laying instrumentation cables across multiple modules. Patent Document 1 shows a natural gas (NG) plant constructed using the modular construction method.

Patent Publication No. WO2019/008725

The present invention provides technology that can shorten the construction time required for plant construction.

The plant configuration module of the present invention (first invention) comprises:
A module for plant configuration, which is the first module of a plant configured by connecting a first module having a first piping and a first cable rack provided on a first frame and a second module having a second piping and a second cable rack provided on a second frame,
The first frame;
The first pipes are provided in a plurality of stages at a rear end of the first frame so that the second pipes are connected from the rear, and each of the first pipes extends forward and backward;
the first cable rack is provided at a rear end of the first frame so that the second cable rack is connected from the rear, and the first cable rack is positioned at different left and right positions with respect to each of the first pipes;
Equipped with.

A second invention is a module for plant configuration according to the first invention, in which the first piping is not provided in a position overlapping vertically with the first cable rack.
In a third aspect of the present invention, a plurality of the first cable racks are provided,
Each of the first pipes is a module for plant configuration of the first invention, the left and right positions of which differ with respect to each of the plurality of first cable racks.
In a fourth aspect of the present invention, the first piping is provided on each of the left and right sides of the first cable rack,
This is a module for plant configuration of the third invention in which the first piping is not provided between the first cable rack located on the left and right furthest side and the first cable rack located on the other furthest side.

A fifth invention is a module for a plant configuration of the third invention, in which a first cable rack located on one side of the first cable rack on the left or right is located on the other side of a first piping located on the other side of the first piping on the left or right.
The sixth aspect of the present invention is a pipe rack in which the second module extends to the left and right,
The plant includes a plurality of equipment modules arranged along an extension direction of the pipe rack, each of the equipment modules including equipment constituting the plant;
The first module is a module for configuring a plant according to the first invention, which is an equipment module.
The seventh invention is a plant comprising: a pipe rack extending left and right;
a plurality of equipment modules arranged along an extension direction of the pipe rack, each of the equipment modules including equipment constituting the plant;
The first module and the second module are modules for forming a plant according to the first invention, which are arranged side by side to form the pipe rack.

The plant construction method of the present invention (8th invention) comprises the steps of:
1. A method for constructing a plant including a first module having a first piping and a first cable rack provided on a first frame, and a second module having a second piping and a second cable rack provided on a second frame and connected to the second module, comprising:
At the rear end of the first frame, the first pipes are provided in a plurality of stages, each extending forward and backward, and a plurality of the first cable racks are provided so that the left and right positions of the first pipes are different from each other.
a step of installing the first frame and the second frame on a construction site of the plant such that the first frame and the second frame are arranged in front and behind each other and a first cable rack located on one side in the left and right directions among the first cable racks is located on the other side of a first piping located on the other side in the left and right directions among the first pipings;
Next, a step of disposing a crane on one of the left and right sides of the first frame;
Subsequently, a step of connecting the first pipe and the second pipe located behind the first pipe by the crane;
connecting the first cable rack to the second cable rack located behind the first cable rack;
Equipped with.

The present invention can shorten the construction time required for plant construction.

FIG. 1 is a schematic plan view of a NG plant according to an embodiment of the present invention. FIG. 2 is a side view in the X direction of the pipe rack forming module and the equipment module before connection that constitute the NG plant. FIG. 2 is a perspective view of an end of the pipe rack forming module and the equipment module. FIG. 13 is a plan view of the NG plant during the connection work of the equipment modules. FIG. 13 is a plan view of the NG plant during the connection work of the equipment modules. FIG. 4 is a side view of the equipment module in the Y direction. FIG. 4 is a side view of the equipment module in the Y direction. FIG. 4 is a side view of the equipment module in the Y direction. FIG. 4 is a side view of the equipment module in the Y direction.

An NG plant 1, which is one embodiment of the present invention, will be described with reference to the schematic plan view of Figure 1. The NG plant 1 is a plant constructed by a modular construction method, which cools and liquefies natural gas (NG) produced from gas wells, and stores it as liquefied natural gas (LNG: Liquefied Natural Gas). Each module in this embodiment is composed of a structure, equipment (dynamic equipment and/or static equipment), piping, and a cable rack that supports cables. The structure is formed, for example, by joining steel beams, and the piping and cable rack are housed within this structure.

In this specification, the horizontal direction is indicated as the X direction and the Y direction, and the vertical direction is indicated as the Z direction. Therefore, the X direction and the Y direction are lateral directions. The X, Y, and Z directions are perpendicular to each other. Furthermore, one end side and the other end side in the X direction will be described as the +X side and the -X side, respectively, and one end side and the other end side in the Y direction will be described as the +Y side and the -Y side, respectively. Note that the directions shown in the explanation of each module that constitutes the NG plant 1 are the directions when the modules are installed at the construction site of the NG plant 1. In other words, even when explaining modules being assembled in the module yard, the directions shown in the explanation are the directions when the modules are installed at the construction site to form the NG plant 1.

In order to avoid complicating the explanation, the following explanation shows a simplified plant configuration compared to the actual configuration. Specifically, the number of modules and cables that make up the plant has been reduced, and the structure of the framework of the modules has been simplified.

NG plant 1 includes multiple pipe rack forming modules and multiple equipment modules. Pipe rack forming modules 11 to 13 are aligned in the X direction, and are arranged in the order of pipe

rack forming modules

11, 12, 13 from the +X side to the -X side. Adjacent pipe rack forming modules 11 to 13 are connected to each other to form a pipe rack 14 that extends in the X direction.

Then, for example, three equipment modules 21 are provided on each of the +Y side and -Y side of the pipe rack 14. The three equipment modules 21 on the +Y side and the three equipment modules 21 on the -Y side are spaced apart along the X direction (i.e., along the extension direction of the pipe rack 14). These equipment modules 21 house static equipment and dynamic equipment in a framework. An example of static equipment is a tower tank 52 (not shown in FIG. 1) that causes various reactions such as distillation, desulfurization, and dehydration, and stores reaction products. An example of dynamic equipment is a pump (not shown) that passes fluids (gas or liquid) between modules to perform necessary processing in the plant.

The piping in each equipment module 21 is connected to each other via piping in the pipe rack 14 so that fluids (gas or liquids) required for processing in the NG plant 1 can flow between the equipment modules 21. The pumps in the equipment modules 21 are used to move fluids between the equipment modules 21, and as described below, the pumps also move fluids between the piping 42 of the pipe rack 14 and the piping 53 of the equipment module 21, which are connected to each other. In the NG plant 1, natural gas is transferred in sequence through the tower tanks 52 of each equipment module 21 for processing, and is stored as LNG in the tower tank 52 (storage tank) of the equipment module 52 to which it was last transferred.

The three equipment modules 21 arranged in the X direction as described above may be distinguished from one another and shown as 21A, 21B, and 21C in order toward the -X side. The

equipment modules

21A, 21B, and 21C are adjacent to the pipe

rack forming modules

11, 12, and 13, respectively, and the adjacent pipe rack forming modules and equipment modules are connected to each other.

An instrument room 31 is provided on the +X side of the pipe rack 14. The instrument room 31 is provided with an instrument panel and a control panel that house various devices for performing various measurements, monitoring, and control of static and dynamic equipment. In addition to the instrument room 31, a control room is provided where an operator can operate the equipment of the NG plant 1, but is not shown in the figure.

The above-mentioned equipment module 21 is provided with a junction box (JB) 22 and instrumentation equipment 23. Many instrumentation equipment 23 are provided in each equipment module 21, but only two are shown for convenience. Each instrumentation equipment 23 is a thermometer, flow meter, pressure gauge, liquid level gauge, vibration meter, etc. In each equipment module 21, the JB 22 and each instrumentation equipment 23 are connected to each other by a single-core cable 24. The above-mentioned instrument room 31 and the JB 22 of each equipment module 21 are connected by a cable 32, which is a multi-core cable. Therefore, the

cables

24 and 32 are cables for instrumentation.

In the NG plant 1, the installation area 33 in which the above-mentioned cable 32 is laid extends from the instrument room 31 toward the -X side of the pipe rack 14. This installation area 33 is formed by a cable rack that supports the cable 32. The installation area 33 branches midway as it extends toward the -X side, and heads toward both the +Y and -Y directions in the pipe rack 14. In the following explanation, the portion of the installation area 33 that extends in the X direction will be referred to as the trunk line, and the portion that branches off from the trunk line will be referred to as the branch line.

A large number of cables 32 extend from the instrument room 31 along the trunk of the installation area 33 toward the -X side of the pipe rack 14. Each cable 32 is bent at a position corresponding to the position of the equipment module 21 to which it is connected, pulled out to a branch in the installation area 33, and connected to the JB 22 of the equipment module 21 described above. The large number of instrumentation cables 32 extending from the instrument room 31 in this way include power supply cables (i.e., AC cables) that supply power to the instrumentation equipment 23, and signal cables (i.e., DC cables) that transmit signals from the instrumentation equipment 23 to the instrument room 31.

In FIG. 1, one installation area 33 is shown, and one branch of the installation area 33 is shown as being connected to a JB 22 provided in an equipment module 21. However, in reality, multiple JBs 22 are provided in the installation area 33 and one equipment module 21. Therefore, multiple branch lines in the installation area 33 extend toward one equipment module 21, and the cable 32 is connected to multiple JBs 22 of the equipment module 21 via each branch line. In order to prevent noise from being generated in the signals, at least the DC cable and the AC cable are provided in different installation areas 33 so as to be located away from each other.

Figure 2 is a side view of the pipe rack forming module 11 and the equipment module 21A as viewed in the X direction, showing the state after installation at the construction site of the NG plant 1 and before they are connected to each other. The pipe rack forming module 11 has a frame 41. The columns and beams that make up the frame 41 form piping arrangement areas at different positions in the Z direction on the frame 41. At each of the +Y side end and -Y side end of the frame 41, the ends of the piping 42 extend in the Y direction and are arranged in multiple stages. Note that Figure 2 only shows the end of the piping 42 on the +Y side. This piping 42 is the piping that is connected to the piping 53 described below in the equipment module 21A.

Furthermore, at the +Y end and -Y end of the frame 41, a cable tray 43, which is a tray-type cable rack, is provided as a cable rack for forming a branch line of the installation area 33. Note that only the cable tray 43 on the +Y side is shown in FIG. 2. The cable tray 43 is formed into a recess by bending both ends in the width direction of a long plate so that they face in the same direction. After connection with the cable tray 54 of the equipment module 21A described later, the cable 32 is laid in the recess along the length of the cable tray 43. This cable tray 43 is positioned so that it extends in the Y direction toward the equipment module 21A.

Next, the equipment module 21A will be described. The equipment module 21A has a frame 51, and a tower tank 52 is housed in the frame 51. The columns and beams that make up the frame 51 form piping arrangement areas at different positions in the Z direction on the frame 51. That is, the piping is arranged in multiple stages, as with the frame 41. At the end of the frame 51 facing the pipe rack forming module 11, the end of the piping 53 extends in the Y direction and is arranged in multiple stages. The end of the piping 53 faces the end of the piping 42 so as to be connected to the piping 42 of the pipe rack forming module 11.

A cable tray 54 is also provided on the frame 51. This cable tray 54 is configured in the same manner as the cable tray 43 in the pipe rack forming module 11, and forms a branch line of the installation area 33. The cable tray 54 extends in the Y direction toward the pipe rack forming module 11 and faces the cable tray 43. After being connected to the cable tray 43, the cable 32 is laid along the extension direction of the cable tray 54.

The pipe

rack forming modules

12 and 13 have the same configuration as the pipe rack forming module 11, except that the ends of the piping 42 and the cable trays 43 extend toward the

equipment modules

21B and 21C, respectively. The

equipment modules

21B and 21C have the same configuration as the equipment module 21A, except that the ends of the piping 53 and the cable trays 54 extend toward the pipe

rack forming modules

12 and 13, respectively.

The equipment module 21 is the first module, the frame 51 in the equipment module 21 is the first frame, the piping 53 is the first piping, and the cable tray 54 is the first cable rack. The pipe rack forming modules 11-13 are the second modules, the frame 41 in the pipe rack forming modules 11-13 is the second frame, the piping 42 is the second piping, and the cable tray 43 is the second cable rack. When viewed with respect to the connection between the equipment module 21 and the pipe rack 14, the X direction is the left-right direction, and the Y direction is the front-rear direction. When viewing the equipment module 21 and the pipe rack forming modules 11-13 connected to each other in this front-rear direction, the side where the equipment module 21 is located is the front side, and the side where the pipe rack forming modules 11-13 are located is the rear side.

Additional explanation of directions. In each figure, the +Y side, -Y side, +X side, and -X side of the plant are shown as the front side, rear side, left side, and right side, respectively. Later, the connection between modules will be explained, focusing on the connection between the equipment module 21 (first module) arranged on the +Y side (front side) and the module (second module) forming the pipe rack 14 arranged on the -Y side (rear side). However, the directions of front, back, left, and right shown in the figure are for convenience, and when connecting the first module and the second module, the side where the first module is located is the front in the claims, and the side where the second module is located is the rear in the claims. In other words, when considering the connection between the equipment module 21 (first module) arranged on the -Y side and the module (second module) forming the pipe rack 14, the -Y side is the front side and the +Y side is the rear side.

The construction process of the NG plant 1 described above will now be described. The pipe rack forming modules 11-13 and the equipment module 21 are assembled in the module yard. The assembly work for each module includes forming the framework that constitutes the module, installing various pipes, dynamic equipment, static equipment, JB 22, and instrumentation equipment 23, etc., on the framework, connecting the JB 22 and the instrumentation equipment 23 with cables 24, and installing a cable rack to form the installation area 33. During this assembly, temporary scaffolding is set up around each module and used. However, due to differences in standards and regulations regarding scaffolding between the module yard and the construction site of the NG plant 1, the temporary scaffolding is dismantled and removed after the assembly of the modules is completed.

The pipe rack forming modules 11-13 are transported to the plant construction site and installed. Then, the piping and cable racks are connected between adjacent modules among the pipe rack forming modules 11-13, thereby connecting adjacent modules to form the pipe rack 14. Note that connecting the cable racks between the pipe rack forming modules 11-13 is the work of forming the trunk line of the laying area 33 described in Figure 1.

Then, the equipment modules 21 are transported to the construction site of the NG plant 1 and installed. In FIG. 1, the space between the equipment modules 21 lined up in the X direction is shown as being relatively large, but in reality, this space is relatively small. Therefore, in order to prevent interference between the equipment modules 21 lined up in the X direction, the equipment modules 21 are transported and installed in order from one side in the X direction to the other side on each of the +Y side and -Y side of the pipe rack 14. Specifically, for example, the

equipment modules

21A, 21B, and 21C are transported to the construction site and installed in this order.

As shown in FIG. 2, the equipment module 21 and pipe rack 14 thus installed are arranged such that the end of the pipe 42 faces the end of the pipe 53 with a gap therebetween, and the cable tray 43 faces the cable tray 54 with a gap therebetween. The equipment module 21 and pipe rack 14 are connected by connecting the opposing

pipes

42, 53 and the

cable trays

43, 54 in this manner.

The work of connecting the piping between the equipment module 21A and the pipe rack forming module 11 and the work of connecting the cable trays will be described with reference to FIG. 3, which is a perspective view of these modules. A temporary scaffolding 61 is set up between the pipe rack forming module 11 and the equipment module 21A. Then, a crane 62 (not shown in FIG. 3) is used to hoist a pipe (referred to as a connecting pipe 63) and insert it between the pipe 42 of the pipe rack forming module 11 and the pipe 53 of the equipment module 21A. Then, a worker uses the scaffolding 61 to weld the connecting pipe 63 to each of the

pipes

42 and 53. In other words, the

pipes

42 and 53 are connected via the connecting pipe 63.

The worker also uses the scaffolding 61 to insert a cable tray (referred to as the connecting cable tray 64) between the

cable trays

43 and 54 and connects it to the

cable trays

43 and 54 in a predetermined manner. The connecting cable tray 64 has the same configuration as the

cable trays

43 and 54, and is connected to extend in the Y direction like the

cable trays

43 and 54. Therefore, the

cable trays

43 and 54 are connected so that a continuous cable tray is formed from the

cable trays

43 and 54 and the connecting cable tray 64. The connection of the

cable trays

43 and 54 is a task for forming a branch line of the installation area 33 shown in FIG. 1. The connecting cable tray 64 is lighter than the connecting pipe 63, and the

cable trays

43 and 54 are inserted between them manually by the worker without using the crane 62.

After connecting the

cable trays

43 and 54, the worker lays the tip of the cable 32, which has been laid from the instrument room 31 along the trunk line of the laying area 33, along the branch line of the laying area 33, and connects the tip of the cable 32 to the JB 22 of the equipment module 21A. The connection of the equipment module 21A to the pipe rack forming module 11 has been described as a representative example, but each of the

equipment modules

21B and 21C is also connected to the pipe

rack forming modules

12 and 13 in the same manner as the equipment module 21A. In order to connect the modules to each other, temporary scaffolding is set up in various places in addition to the scaffolding 61, but after the connection work is completed, these temporary scaffoldings, including the scaffolding 61, are dismantled and removed, and operation of the NG plant 1 begins.

A further note on the piping connection work between the pipe rack 14 and the equipment module 21. For equipment modules 21 lined up in the X direction, once one equipment module 21 is installed at the plant construction site, in order to ensure installation space for the crane 62, the piping connection work for that one equipment module 21 is completed before the next equipment module 21 is installed at the construction site. To explain in more detail with reference to Figures 4 and 5, which are schematic plan views showing the construction process of the NG plant 1, for

equipment modules

21A, 21B, and 21C in the same row in the X direction, the piping connection work for 21A is completed before equipment module 21B is installed, and the piping connection work for 21B is completed before 21C is installed.

Then, since the equipment modules 21 are not installed on the +X and -X sides, the work of connecting the piping of the equipment module 21A can be performed by placing cranes 62 on both the +X and -X sides of the equipment module 21A (see FIG. 4). The layout of the piping 42, 53 of the equipment module 21A and the pipe rack 14 is set so that the connection work can be performed by the cranes 62 placed on both the +X and -X sides.

When connecting the piping of the

equipment modules

21B and 21C, the crane 62 is placed only on the -X side because the equipment module 21 is installed on the +X side, and so the work is performed by placing the crane 62 on the -X side (see Figure 5). The layout of the piping 42, 53 of the

equipment modules

21B and 21C and the pipe rack 14 is set so that the connection work can be performed by the crane 62 placed on the -X side.

The layout of the piping 53 and cable tray 54 will be described with reference to Figure 6, which shows a layout of a comparative example. Note that each of the figures from Figure 6 onwards is a side view of the equipment module 21 located on the +Y side (forward side) of the pipe rack 14, looking towards the +Y side (forward side), and shows the end of the equipment module 21 on the -Y side (rear side). The equipment module 21 in each figure is shown as having three levels formed by the framework 51, and is referred to as levels F1, F2, and F3 from the bottom, with multiple ends of the piping 53 installed on each of levels F1 to F3.

Figure 6 shows a comparative layout for the equipment module 21A. In this comparative example, multiple cable trays 54 are arranged on each of the levels F1 and F2. On level F1, in the X direction, the +X side (left side) is the installation area for the cable trays 54, and the center and -X side (right side) are the installation areas for the ends of the piping 53. On level F2, the +X side is the installation area for the ends of the piping 53, and the -X side is the installation area for the cable trays 54. On level F3, the center in the X direction is the installation area for the ends of the piping 53. Therefore, between levels F1 and F2, the layout is such that the ends of the piping 53 and the cable trays 54 overlap in the Z direction.

As shown in FIG. 6, when connecting the piping for the equipment module 21A, a crane 62 is placed on each of the +X and -X sides of the equipment module 21A. The crane 62 placed on the +X side of the equipment module 21A connects the piping 53 located on the +X side, and the crane 62 placed on the -X side of the equipment module 21A connects the piping 53 located on the -X side. In order to shorten the construction period of the NG plant 1, it is effective to perform the connection work between the cable tray 54 and the cable tray 43 of the pipe rack forming module and the installation work of the cable 32 to the

connected cable trays

43, 54 in parallel with the connection work between the piping 53 and the piping 44 of the pipe rack forming module 11.

However, the connection pipe 63 suspended by the crane 62 is relatively heavy. Therefore, in order to ensure the safety of the workers, it is necessary to avoid having workers perform cable tray connection work and cable 32 installation work below the suspended connection pipe 63 and crane 62. Therefore, for the cable tray 54 provided in the area that overlaps with the end of the pipe 53 in the Z direction, connection work and cable 32 installation work cannot be performed until the connection work of the pipe 53 is completed. Specifically, for the cable tray 54 on the +X side of floor F1 and the cable tray 54 on the -X side of floor F2, which overlap with the end of the pipe 53 in the Z direction, connection work and cable 32 installation work cannot be performed.

In addition, when performing connection work on the pipes 53 on the +X side of the center of the X direction of floor F1, the crane 62 is positioned above the cable tray 54 on the +X side of floor F1, as shown by the dashed line in the figure. Therefore, for the cable tray 54 on the +X side of floor F1, in addition to the end of the pipes 53 being installed above, the end of the pipes 53 is located on the -X side of the same floor, so connection work cannot be started immediately, and the connection work for that cable tray 54 will be performed after the connection work for these pipes 53 is completed.

Next, the layout of the piping 53 and the cable tray 54 at the end of the -Y side of the equipment module 21A, which is the first embodiment of the present invention, will be described with reference to FIG. 7, focusing on the differences from the comparative example. In the stories F1 and F2, the ends of the piping 53 are installed at the end of the +X side (left side) and the end of the -X side (right side), respectively, and in the story F3, the end of the piping 53 is installed at the end of the +X side. Then, in the stories F1 and F2, a plurality of cable trays 54 are installed side by side in the X direction in the center in the X direction. Therefore, in each of the stories F1 and F2, each cable tray 54 is sandwiched between the piping 53 from the +X side (left side) and the -X side (right side), and the left and right positions with respect to each piping 53 are different. More specifically, the arrangement area of the piping 53 does not overlap with the cable tray 54 in the Z direction. In other words, the ends of the piping 53 are not provided at positions that overlap with the cable tray 54 vertically. To describe the layout in more detail, the ends of the piping 53 are provided on the +X side and the -X side of each cable tray 54. Furthermore, no end of the piping 53 is provided between the cable tray 54 located furthest on the +X side in the X direction and the cable tray 54 located furthest on the -X side.

The connection work for each pipe 53 located at the end on the +X side of the equipment module 21A is performed by a crane 62 (shown by a dashed line in FIG. 7) located on the + side of the equipment module 21A. The connection work for each pipe 53 located at the end on the -X side of the equipment module 21A is performed by a crane 62 (shown by a solid line in FIG. 7) located on the -X side of the equipment module 21A. And because of this layout of the pipes 53 and cable trays 54, the crane 62 located on one of the +X and -X sides does not move from that side to the other side across the cable tray 54 during this connection work.

In this way, in the layout of the equipment module 21A of the first embodiment, when performing the connection work for any of the pipes 53, the crane 62 is prevented from being positioned in a position overlapping the cable tray 54 in the Z direction. Therefore, in parallel with the connection work for each pipe 53, the connection work for each cable tray 54 and the installation work of the cable 32 to the already connected cable tray 54 can be performed. Note that the connection work for either the +X side pipe 53 or the -X side pipe 53 may be performed first, or the connection work may be performed in parallel.

Next, referring to FIG. 8, the layout of the ends of the pipes 53 and the cable trays 54 in the equipment module 21B of the second embodiment will be described, focusing on the differences from the equipment module 21A of the first embodiment. On levels F1 to F3, the ends of the pipes 53 are provided closer to the -X side of the equipment module 21B. On levels F1 and F2, the cable trays 54 are provided on the +X side of the ends of the pipes 53. More specifically, the cable trays 54 that are provided on the furthest -X side are laid out to be on the +X side of the ends of the pipes 53 that are located on the furthest +X side.

Therefore, in this second embodiment, as in the first embodiment, the ends of the pipes 53 and the cable tray 54 are not in a positional relationship in which they overlap in the Z direction. As described in FIG. 5, when connecting the pipes 53, the crane 62 is placed on the -X side of the equipment module 21B, but since the pipes 53 are gathered on the -X side, the crane 62 is not positioned on the +X side beyond the area where the pipes 53 are located. Therefore, in the equipment module 21B of this second embodiment, as in the equipment module 21A of the first embodiment, the crane 62 is not positioned above the cable tray 54 during the connection work of the pipes 53. Therefore, in parallel with the connection work of the pipes 53, the connection work of the cable trays 54 and the laying of the cable 32 to the connected cable trays 54 can be performed.

For the equipment module 21C installed on the +Y side of the pipe rack 14, work is performed using the crane 62 in the same way as for the equipment module 21B shown in FIG. 8, so the layout is the same as for this equipment module 21B. Then, in parallel with the work of connecting the piping 53, the work of connecting the cable tray 54 and the work of laying the cable 32 are performed. Also, for the equipment modules 21A to 21C installed on the -Y side (rear side) of the pipe rack 14, the layout of the ends of the piping 53 and the cable tray 54 is the same as for the equipment modules 21A to 21C on the +Y side (front side) of the pipe rack 14, and the work of connecting the cable tray 54 and the work of laying the cable 32 are performed in parallel with the work of connecting the piping 53.

In the NG plant 1 including the equipment modules 21A to 21C of the above embodiment, the work of connecting each cable tray 54 and the work of laying the cables 32 to the already connected cable trays 54 can be performed in parallel with the work of connecting the piping 53. Therefore, the construction period of the NG plant 1 can be shortened.

As explained in FIG. 2, between the pipe rack 14 and the equipment module 21, the end of the pipe 42 faces the end of the pipe 53, and the cable tray 43 faces the cable tray 54. Therefore, setting the layout of the pipes 53 and cable tray 54 in the equipment module 21 as explained in FIG. 7 and FIG. 8 means setting the layout of the pipes 42 and cable tray 43 in the pipe rack 14 to correspond to that layout. Therefore, although it has been stated that the equipment module 21 is the first module of the present invention, the first module can also be seen as the pipe rack forming modules 11 to 13.

The layout of the piping 53 and cable trays 54 of the equipment module 21A is shown in FIG. 9 as a third embodiment, and the layout of this third embodiment will be described focusing on the differences from the layout of the first embodiment. In this third embodiment, the ends of each piping 53 on levels F1 to F3 are located in the center of the equipment module 21A in the X direction. On level F2, cable trays 54 are provided at the +X side end and the -X side end of the equipment module 21A, and the ends of the piping 53 are not provided at positions that overlap with the cable trays 54 in the Z direction. To describe the layout in more detail, no cable trays 54 are provided between the end of the piping 53 located closest to the +X side and the end of the piping 53 located closest to the -X side.

In the third embodiment, the crane 62 is placed on one side of the +X side (left side) and the -X side (right side) of the equipment module 21A in order to connect each pipe 53. Then, in parallel with the connection work of the pipes 53, the connection work for the cable tray 54 and the laying work of the cable 32 are performed. To explain this in detail, assuming that one side is the +X side and the other side is the -X side, first, the crane 62 is placed on the +X side (one side) as shown by the dashed line in the figure, and the connection work of each pipe 53 near the +X side of the center of the X direction of the equipment module 21A is performed. At this time, since the cable tray 54 placed on the +X side of the equipment module 21A is located below the crane 62, the connection work and the laying work of the cable 32 cannot be performed on each cable tray 54 on the +X side. However, since the crane 62 is not located above each cable tray 54 placed on the -X side of the equipment module 21A, the connection work and the laying work of the cable 32 are performed on the cable tray 54 on the -X side in parallel with the connection work of the pipes 53.

Then, when the connection work for the pipes 53 on the +X side of the center in the X direction is completed, the crane 62 is moved to the -X side (the other side) of the equipment module 21A as shown by the solid line in the figure, and the connection work for each pipe 53 on the -X side of the center in the X direction of the equipment module 21A is performed. After the crane 62 is moved to the -X side, while the connection work for the pipes 53 on the -X side is being performed, the crane 62 is not positioned above each cable tray 54 arranged on the +X side of the equipment module 21A. Therefore, in parallel with the movement of the crane 62 to the -X side of the module and the connection work for the pipes 53 on the -X side, the connection work for the cable tray 54 on the +X side and the laying of the cable 32 are performed.

In this third embodiment, the work of connecting the pipes 53, the work of connecting the cable trays 54, and the work of laying the cables 32 can be performed in parallel, so the construction period of the NG plant 1 can be shortened. However, as described above, the work on some of the cable trays 54 is restricted by the work of connecting the pipes 53, so the layout of the first embodiment is preferable as it can more reliably shorten the construction period.

In the first to third embodiments, the layout is such that the piping 53 does not overlap any of the cable trays 54 in the Z direction, but the layout may be such that the piping 53 does not overlap only some of the cable trays 54 in the Z direction. As a specific example, the piping 53 is provided at the +X side end of the stories F1 and F3 of the third embodiment in FIG. 9 so as to overlap the cable tray 54. Then, when performing the connection work in the order of the piping 53 on the +X side of the equipment module 21A and the piping 53 on the -X side as described above, when the crane 62 is placed on the +X side of the equipment module 21A, in addition to the piping 53 near the +X side of the center of the module, the connection work is also performed on the piping 53 on the +X side end of the stories F1 and F3. In parallel with the connection work of these piping 53, the connection work to the cable tray 54 is performed on the -X side of the module as described above. Since each work can be performed in parallel in this way, the construction period of the NG plant 1 can be shortened. However, as in the first to third embodiments, it is preferable to arrange the ends of the pipes 53 so that they do not overlap with all of the cable trays 54 in the Z direction, so that work on each cable tray 54 is not affected by the work to connect the pipes 53, in order to more reliably shorten the construction period of the NG plant 1.

So far, we have explained the connection between the equipment module 21 and the pipe rack 14, but the connection between the pipe rack forming modules 11 to 13 may also be performed in a similar manner. In other words, the layout of the piping and cable trays at the ends of adjacent pipe rack forming modules may be the same as in each of the previously described embodiments, and the piping connection work, the cable tray connection work, and the cable 32 laying work may be performed in parallel. This also shortens the construction period of the NG plant 1. In this case, the first module and the second module that are connected to each other are adjacent modules among the pipe rack forming modules 11 to 13, and the Y direction is the left-right direction and the X direction is the front-back direction.

However, in the pipe rack 14, the pipes are arranged relatively densely, and the length of each pipe is relatively short so as not to interfere with processing. Due to this constraint, there is more design freedom in the pipes that extend in the Y direction to be drawn out to the equipment module 21 than in the X direction between adjacent pipe rack forming modules 11-13. In other words, it is advantageous and less difficult to design the plant to set up the layout of the pipes and cable trays by using one of the pipe rack forming modules 11-13 and the equipment module 21 as the first module and the other as the second module (the module connected to the first module).

As described above, the equipment module 21 is installed at the construction site after the pipe rack forming modules 11 to 13 are installed at the construction site. Therefore, even if the cable tray connection work is delayed with respect to the piping connection work between the pipe rack forming modules 11 to 13, the cable tray connection work and laying work can be performed in parallel with the installation work of the equipment module 21, so the impact on the construction period of the NG plant 1 is suppressed. However, since the equipment module 21 is installed after the pipe rack forming modules 11 to 13, if the cable tray connection work is delayed with respect to the piping connection work, the delay will have a relatively large impact on the construction period of the plant. Therefore, applying the present invention to the connection between the equipment module 21 and the pipe rack forming modules 11 to 13 is advantageous from the viewpoint of more reliably shortening the construction period of the plant.

Note that although a cable tray has been used as an example of a cable rack, the shape of the cable rack is not limited to this example. As a cable rack other than a tray type, for example, a ladder type can be used.

In the NG plant 1, only the instrumentation cables 32 are laid in the installation area 33, and the power supply cables for supplying power to various moving equipment such as pumps are laid in an area different from the installation area 33. However, the power supply cables for these moving equipment may also be laid in the installation area 33. Therefore, the cable laying work described above is not limited to the laying work of the instrumentation cables 32.

Although an example in which one equipment module 21 is connected to each of the +Y side and -Y side of one pipe rack forming module has been shown, the number of equipment modules 21 connected to each of the +Y side and -Y side is arbitrary. In addition, the present technology is not limited to application to NG plants that produce LNG. For example, it can be applied to various plants such as oil refining plants that perform distillation and desulfurization of crude oil and various intermediate products, chemical plants that produce petrochemical products, intermediate chemicals, polymers, etc., and plants that manufacture pharmaceuticals and foods. Therefore, the tower tank 52 included in the equipment module 21 may be, for example, a distillation tower, a rectification tower, an extraction tower, an absorption tower, a washing tower, a desulfurization tower, a regeneration tower, a reaction tower, a mixing tank, a fermentation tank, a culture tank, etc. that perform various reactions. Note that the equipment module 21 may be, for example, assembled in a module yard in a state in which it is divided into several parts, and connected to each other after installation at the construction site to form the equipment module 21.

The embodiments disclosed herein should be considered in all respects as illustrative and not restrictive. The above embodiments may be omitted, substituted, modified, combined, etc. in various forms without departing from the scope and spirit of the appended claims.

11 to 13 Pipe rack forming module 21 Equipment module 41 Frame 42 Piping 43 Cable tray 51 Frame 53 Piping 54 Cable tray

Claims

A module for plant configuration, which is the first module of a plant configured by connecting a first module having a first piping and a first cable rack provided on a first frame and a second module having a second piping and a second cable rack provided on a second frame,
The first frame;
The first pipes are provided in a plurality of stages at a rear end of the first frame so that the second pipes are connected from the rear, and each of the first pipes extends forward and backward;
the first cable rack is provided at a rear end of the first frame so that the second cable rack is connected from the rear, and the first cable rack is positioned at different left and right positions with respect to each of the first pipes;
A module for configuring a plant comprising:
A module for plant configuration according to claim 1, in which the first piping is not provided in a position that overlaps vertically with the first cable rack.
The first cable rack is provided in plurality,
The module for constructing a plant according to claim 1 , wherein each of the first pipes is positioned differently on the left and right sides with respect to each of the plurality of first cable racks.
The first piping is provided on each of the left and right sides of the first cable rack,
4. The module for plant configuration according to claim 3, wherein the first piping is not provided between the first cable rack located on the left and right most side and the first cable rack located on the other most side.
The first cable rack located on the left or right most side of the first cable rack is
4. The module for constituting a plant according to claim 3, which is located on the other side of a first pipe that is located on the other side on the left and right among said first pipes.
The second module constitutes a pipe rack extending to the left and right,
The plant includes a plurality of equipment modules arranged along an extension direction of the pipe rack, each of the equipment modules including equipment constituting the plant;
2. The module for plant configuration according to claim 1, wherein the first module is an equipment module.
The plant includes a pipe rack extending to the left and right,
a plurality of equipment modules arranged along an extension direction of the pipe rack, each of the equipment modules including equipment constituting the plant;
2. The module for constructing a plant according to claim 1, wherein the first module and the second module are arranged side by side to form the pipe rack.
1. A method for constructing a plant including a first module having a first piping and a first cable rack provided on a first frame, and a second module having a second piping and a second cable rack provided on a second frame and connected to the second module, comprising:
At the rear end of the first frame, the first pipes are provided in a plurality of stages, each extending forward and backward, and a plurality of the first cable racks are provided so that the left and right positions of the first pipes are different from each other.
a step of installing the first frame and the second frame on a construction site of the plant such that the first frame and the second frame are arranged in front and behind each other and a first cable rack located on one side in the left and right directions among the first cable racks is located on the other side of a first piping located on the other side in the left and right directions among the first pipings;
Next, a step of disposing a crane on one of the left and right sides of the first frame;
Subsequently, a step of connecting the first pipe and the second pipe located behind the first pipe by the crane;
connecting the first cable rack to the second cable rack located behind the first cable rack;
A method for constructing a plant comprising: