Plant module installation and maintenance system using mobile jack-up and method therefor

Abstract

The present invention relates to a plant module installation and maintenance system using a mobile jack-up, wherein, during the construction of a plant module in a non-traditional oil production area where there is a high risk of irregular subsidence caused by an extreme temperature difference and the amount of precipitation, when subsidence occurs, the height of each module support unit can be adjusted via a mobile jack-up without concrete pouring work, to ensure that the level remains uniform.

Description

Mobile jack-up type plant module installation and maintenance system and method thereof

[0001] The present invention relates to a mobile jack-up type plant module installation and maintenance system and method thereof, and more particularly, to a technology applicable to the construction of plant modules in unconventional oil production areas where irregular subsidence is highly likely to occur due to extreme temperature differences and rainfall. The present invention can maintain the same level by adjusting the height of each module support section through a mobile jack-up when subsidence occurs, without the need for concrete pouring work.

[0002] The recent rise in oil prices and the war in Ukraine have re-emerged the need for oil, and unconventional oils, such as those produced in extreme environmental conditions, are receiving renewed attention.

[0003] The oil sands region, centered around Canada, is largely located in extreme conditions, requiring rapid construction of oil production plants in modular form, transported on-site for installation and assembly. In Canada, construction typically takes place during the summer, with construction reportedly only possible in as little as two months.

[0004] Safely installing plant modules in such harsh environments requires rapid construction of the supporting foundation and key technologies for maintaining the horizontal balance of the modules. Especially due to the nature of construction in extreme regions, which is limited to the summer months, site accessibility, unlike conventional construction methods, restricts free material transport. Therefore, technologies that ensure modularization and the resulting speed and accuracy in installation and construction are crucial.

[0005] Furthermore, most oil sands regions have short summers, and the extreme temperature differences between winter and summer can cause geological changes ranging from tens of centimeters to several meters, leading to subsidence of modular foundations. Because subsidence inevitably accelerates due to vibrations generated by plant operation, it's crucial to develop optimal foundation design and installation technologies that take into account the characteristics of frozen ground.

[0006] The present invention was created in response to the above-mentioned needs, and the purpose of the present invention is to provide a mobile jack-up type plant module installation and maintenance system and method that can be applied when constructing a plant module in an unconventional oil production area where irregular subsidence is highly likely to occur due to extreme temperature differences and rainfall, and that can maintain the same level by adjusting the height of each module support part through a mobile jack-up when subsidence occurs without concrete pouring work.

[0007] For the above purpose, the present invention relates to a mobile jack-up type plant module installation and maintenance system, comprising: a pile inserted into a hole formed by excavating the ground in an area where a plant module is to be installed and having an inner surface of a predetermined diameter; a fixed structure formed with a through hole communicating with the inner surface of the pile and mounted on the upper end of the pile; a leg formed with a clutch rail having alternating protrusions and grooves formed longitudinally on the outer surface thereof, the leg being inserted into the interior of the fixed structure and the pile and having a plant module mounted on the exposed upper end thereof; and an elevation unit having a lower end supported by the fixed structure, the upper end positioned corresponding to the upper end of the leg, the upper end and the lower end connected by an actuator so as to be driven up and down, and a clutch selectively insertable into the protrusions of the clutch rail so as to be engaged with the rail.

[0008] And the said lifting and lowering unit is configured to include a lower support body supported by the said fixed structure and having a lower yoke through which the leg passes through the center, a lower clutch insertable into the said groove, and a lower clutch cylinder moving the lower clutch to insert or remove the lower clutch into the groove, and a lower clutch block in the form of wrapping the clutch rail are combined; an upper support body positioned spaced apart from the upper side of the lower support body and having an upper yoke through which the leg passes through the center, an upper clutch insertable into the groove, and an upper clutch cylinder moving the upper clutch to insert or remove the upper clutch into the groove, and an upper clutch block in the form of wrapping the clutch rail are combined; and a plurality of actuators, both ends of which are respectively connected to the lower support body and the upper support body and whose lengths are adjusted through hydraulic pressure.

[0009] In addition, the above-mentioned fixed structure is configured to include a fixed support body mounted on the top of the file so that the leg penetrates the center, a fixed clutch block having a fixed clutch insertable into the groove, and a fixed clutch cylinder that moves the fixed clutch and inserts or removes it from the groove, and a fixed yoke combined therewith.

[0010] And the clutch rail is formed in three rows at 120-degree intervals from the center of the leg cross-section, and the lower support, upper support, and fixed support each have three pairs of clutch blocks, and the actuators are installed in pairs on the side of the clutch blocks.

[0011] In addition, it may further include a control module having a hydraulic power pack and a valve control station and individually controlling the clutch and actuator.

[0012] Meanwhile, for the above purpose, the present invention relates to a method for installing and maintaining a plant module using a mobile jack-up method, comprising: an excavation step of excavating the ground in an area where a plant module is to be installed to form a hole; an insertion step of inserting a pile having an inner surface of a predetermined diameter into the excavated hole; a step of mounting a fixed structure having a through-hole formed therein to communicate with the inner surface of the pile on the top of the pile; a step of inserting a leg having a clutch rail formed with alternating longitudinal protrusions and grooves on the outer surface thereof into the fixed structure and the pile so that a portion of the upper end is exposed; a step of arranging a lower end of an elevating unit, the upper end of which is connected to the lower end by an actuator, the lower end of which is supported by the fixed structure and the upper end of which is positioned corresponding to the upper end of the leg; a step of settling the plant module on the upper end of the leg; And it comprises a step of determining the position of the plant module by moving the upper end of the raising / lowering unit up and down together with the leg by driving the actuator while the upper end of the raising / lowering unit is inserted into the protruding portion of the clutch rail.

[0013] And in the position determination step, when raising the plant module, the step of detaching the fixed clutch driven by the fixed-clutch cylinder in the fixed structure from the uneven part at the corresponding position, and detaching the lower clutch driven by the lower-clutch cylinder at the lower end of the actuator from the uneven part at the corresponding position; the step of raising the upper end together with the leg based on the lower end of the raising / lowering unit by driving the actuator; and the step of inserting the fixed clutch driven by the fixed-clutch cylinder in the fixed structure into the uneven part at the corresponding position when the plant module reaches the set height, and the step of inserting the lower clutch driven by the lower-clutch cylinder at the lower end of the actuator into the uneven part at the corresponding position.

[0014] In addition, in the position determination step, when lowering the plant module, the step of detaching the fixed clutch driven by the fixed-clutch cylinder in the fixed structure from the uneven part at the corresponding position, and detaching the lower clutch driven by the lower-clutch cylinder at the lower end of the actuator from the uneven part at the corresponding position; the step of driving the actuator to lower the upper end together with the legs based on the lower end of the raising / lowering unit; and the step of inserting the fixed clutch driven by the fixed-clutch cylinder in the fixed structure into the uneven part at the corresponding position when the plant module reaches the set height, and the step of inserting the lower clutch driven by the lower-clutch cylinder at the lower end of the actuator into the uneven part at the corresponding position.

[0015] In addition, when the position of the plant module is determined, the step of dismantling the lifting / lowering unit may further include a step of detaching the lower clutch driven by the lower clutch cylinder at the lower end of the actuator from the uneven portion at the corresponding position, and detaching the upper clutch driven by the upper clutch cylinder at the upper end of the actuator from the uneven portion at the corresponding position.

[0016] At this time, in the step of dismantling the lifting / lowering unit, the lifting / lowering unit can be dismantled by lowering the upper end of the lifting / lowering unit by driving the actuator to contract in the longitudinal direction.

[0017] According to the present invention, when constructing plant modules in unconventional oil production areas where irregular subsidence is highly likely due to extreme temperature differences and rainfall, the level can be maintained by adjusting the height of each module support section using a mobile jack-up without concrete pouring. Therefore, not only is concrete pouring unnecessary, but the plant module can be installed only on the parts that are subject to stress, thereby drastically reducing construction time and costs. Furthermore, the mobile jack-up can be detached and applied to other plant modules, thereby reducing installation and maintenance costs. In addition, since the dismantling and restoration of the plant module is simple, the overall time and cost for maintenance, dismantling, restoration, and reinstallation are reduced, and it has the advantage of being a relatively more environmentally friendly construction method.

[0018] Figure 1 is a perspective view of a plant module according to one embodiment of the present invention;

[0019] Figure 2 is a perspective view of a leg according to one embodiment of the present invention;

[0020] Figure 3 is a cross-sectional view showing the arrangement relationship of a file, a fixed structure, and a leg according to one embodiment of the present invention.

[0021] Figure 4 is a side view showing the configuration of a fixed structure and an up-and-down unit according to one embodiment of the present invention.

[0022] Figure 5 is a perspective view showing the configuration of a lifting / lowering unit according to one embodiment of the present invention.

[0023] Figure 6 is a perspective view showing the configuration of the lower support body of the lifting / lowering unit according to the present invention.

[0024] Figure 7 is a perspective view showing the configuration of the upper support body of the lifting / lowering unit according to the present invention.

[0025] Figure 8 is a separation concept diagram of a lifting / lowering unit according to one embodiment of the present invention.

[0026] Figure 9 is a flowchart illustrating a construction method according to one embodiment of the present invention.

[0027] FIG. 10 is a perspective view showing the rising stage of a plant module according to one embodiment of the present invention;

[0028] Fig. 11 is a perspective view illustrating the operation of a clutch according to one embodiment of the present invention.

[0029] The configuration of the mobile jack-up type plant module installation and maintenance system of the present invention is specifically described with reference to the attached drawings below.

[0030] The mobile jack-up type plant module installation and maintenance system according to the present invention is illustrated in FIGS. 1 to 7. FIG. 1 is a perspective view of a plant module according to an embodiment of the present invention, FIG. 2 is a perspective view of a leg according to an embodiment of the present invention, FIG. 3 is a cross-sectional view showing the arrangement relationship of a pile, a fixed structure, and a leg according to an embodiment of the present invention, and FIG. 4 is a side view showing the configuration of a fixed structure and an elevation unit according to an embodiment of the present invention. In addition, FIG. 5 is a perspective view showing the configuration of an elevation unit according to an embodiment of the present invention, FIG. 6 is a perspective view showing the configuration of an upper support body of an elevation unit according to the present invention, and FIG. 7 is a perspective view showing the configuration of a lower support body of an elevation unit according to the present invention.

[0031] As shown, the plant module installation system according to the present invention is largely composed of a file (10), a fixed structure (20), a leg (30), and an elevating unit (40).

[0032] The pile (10) is inserted into a hole formed by excavating the ground in the area where the plant module (P) is to be installed, and preferably has an inner circumferential surface of a certain diameter. Here, a method well known to those skilled in the art can be used to form the hole. In addition, the hole is preferably formed with a diameter corresponding to the outer circumferential surface of the pile (10), and when formed with a diameter larger than the outer circumferential surface of the pile (10), a filler may be filled between the pile (10) and the hole. At this time, various materials may be utilized as the filler, but in order to minimize damage to nature when dismantling the plant module (P) according to the present invention, a natural material, for example, fine aggregate, may be used.

[0033] The above-mentioned pile (10) is manufactured to have a height, i.e., a length, that can be inserted or installed into an underground rock layer and firmly support a plant module (P) located above ground. While the pile (10) may protrude a certain height above ground, it is preferable to have a height corresponding to the ground so that a fixed structure (20) mounted on top can be supported on the ground.

[0034] The fixed structure (20) is formed with a through hole communicating with the inner surface of the pile (10) and is mounted on the upper end of the pile (10). As shown in Fig. 4, the fixed structure (20) is configured to include a fixed support (21) mounted on the upper end of the pile (10) so that the leg (30) passes through the center, and a fixed yoke (22) to which a fixed clutch block (25) is coupled, which has a fixed clutch that can be inserted into the groove (33) and a fixed clutch cylinder that moves the fixed clutch to insert or remove the fixed clutch from the groove (33).

[0035] This fixed structure (20) is fixedly installed on the top of the above-mentioned file (10) and has a difference in that the actuator (70) is not installed, but the remaining configuration is substantially the same as that of the upper support (60) and lower support (50) of the raising / lowering unit (40) to be described below, so the description of the upper support (60) and lower support (50) may be referred to.

[0036] The leg (30), as illustrated in Fig. 3, is basically formed in a vertical column shape, slides in the height direction within the pile (10), and a plant module (P) is installed on the upper portion. In more detail, the leg (30) is provided with a clutch rail (31) having a longitudinally concave portion (32) and a grooved portion (33) alternately formed on the outer circumference thereof, and is inserted into the fixed structure (20) and the pile (10), and a plant module (P) is installed on the exposed upper portion.

[0037] In addition, the attached drawing shows a leg (30) having a circular cross-section as a preferred embodiment, but the leg (30) can be configured to have various cross-sections such as a square or pentagon, etc., as needed.

[0038] The clutch rail (31) provided on the leg (30) is a means for fixing the height of the plant module (P) through a clutch to be described later, and the size of the groove portion (33) is formed at a uniform interval so that the clutch can be inserted. In the embodiment of the present invention, the clutch rail (31) is formed in three rows at 120-degree intervals from the center of the cross-section of the leg (30) along the outer circumference of the leg (30) so that the load from the plant module (P) can be applied uniformly.

[0039] The number of clutch rails (31) provided on the leg (30) is related to the stability of the load of the plant module (P), and the more there are, the more stable support can be achieved. However, in a situation where there is a space limitation for installing the corresponding clutch and clutch cylinder, a structure in which three pairs of clutch blocks are provided on the lower yoke (51) and the upper yoke (61) corresponding to the three rows of clutch rails (31) provided on the leg (30) as in the embodiment of the present invention can be said to be the optimal form for stability and installation space.

[0040] In addition, since the plant module (P) typically has a rectangular planar structure, the legs (30) are provided on the border including the corners of the plant module (P), and the plant module (P) is provided with four or more legs (30), and there is no particular limitation on the number thereof.

[0041] The raising / lowering unit (40), as illustrated in Fig. 5, is configured to adjust the height of the plant module (P) mounted on the upper portion of the leg (30) by raising / lowering the leg (30) through the clutch rail (31) provided on the leg (30). In more detail, the raising / lowering unit (40) has its lower portion supported by the fixed structure (20), its upper portion positioned corresponding to the upper portion of the leg (30), and the upper and lower portions are connected by an actuator (70) so as to be able to be raised / lowered, and has a clutch that can be selectively inserted into a recessed portion (32) of the clutch rail (31) so as to be engaged with the rail.

[0042] This ascending and descending unit (40) can be configured in various configurations, and the present invention exemplifies a configuration consisting of a lower support (50), an upper support (60), and an actuator (70).

[0043] The lower support body (50), as shown in FIG. 6, is supported by the fixed structure (20) and has a lower yoke (51) through which the leg (30) passes through the center, a lower clutch (52) that can be inserted into the groove (33), and a lower clutch cylinder (53) that moves the lower clutch (52) to insert or remove it from the groove (33), and a lower clutch block (54) that surrounds the clutch rail (31) is combined therewith.

[0044] And, as shown in Fig. 7, the upper support body (60) is positioned spaced apart from the upper side of the lower support body (50) and has an upper yoke (61) through which the leg (30) passes through the center, an upper clutch (62) that can be inserted into the groove (33), and an upper clutch cylinder (63) that moves the upper clutch (62) to insert or remove it from the groove (33), and an upper clutch block (64) that surrounds the clutch rail (31) is combined.

[0045] In addition, the actuator (70) is connected at both ends to the lower support (50) and upper support (60), and the length is adjusted through hydraulic pressure.

[0046] The lower clutch block (54) of the lower support (50) and the upper clutch (62) block of the upper support (60) have substantially the same configuration, and are configured to surround the clutch rail (31) and guide the clutch rail (31) according to the elevation of the leg (30), but are operated to fix the movement of the leg (30) by engaging the clutch rail (31) according to a control signal. That is, as mentioned above, since three rows of clutch rails (31) are formed on the leg (30), three pairs of clutch blocks are provided on the lower support (50) and the upper support (60), respectively, and the clutch cylinders provided in each clutch block are individually controlled.

[0047] The above actuator (70) can be configured in various ways to allow for longitudinal displacement adjustment. In this embodiment, it is a hydraulic cylinder whose length is adjusted through hydraulic pressure. The two ends are connected to the lower support (50) and the upper support (60), respectively, and a plurality of actuators are installed to adjust the distance between the lower support (50) and the upper support (60) through input hydraulic pressure.

[0048] That is, the actuator (70) has a cylinder portion (71) and a piston rod (73), and the length is adjusted by applying and releasing hydraulic pressure, and an upper coupling portion (72) and a lower coupling portion (74) are formed at the upper and lower ends, respectively. In addition, correspondingly, an upper support (67) and a lower support (57) are formed at the upper support body (60) and the lower support body (50), respectively, and installation is performed by coupling the upper support and the upper coupling portion (72), and the lower support and the lower coupling portion (74).

[0049] The elevating unit (40) can be dismantled from the leg (30) as needed and used for elevating another plant module (P). To this end, the elevating unit (40) according to the present embodiment can be configured such that the upper support (60) and the lower support (50) can be installed and detached, respectively.

[0050] To explain in more detail, when the clutch rail (31) is provided in three rows, the upper support body (60) and the lower support body (50) are divided into three based on this, and the lower yoke (51) and the upper yoke (61) can be divided into three lower yoke division bodies (55) and three upper yoke division bodies (65) based on the clutch blocks provided therein, respectively, and the lower yoke joint (56) and the upper yoke joint (66) can be formed so as to be connected to adjacent division bodies using a bolt / nut method.

[0051] Meanwhile, the control module (not shown) is for individually controlling the clutch (23, 52, 62) and actuator (70), and is equipped with four hydraulic power packs including a hydraulic tank and a hydraulic pump so that each of the four legs (30) can be raised and lowered through hydraulic control, and an actuator (70) and clutch cylinder (24, 53, 63) provided for raising and lowering each leg (30), specifically, three pairs (six) of actuators (70) per leg, and three clutch cylinders (24, 53, 63) provided for each leg, and a valve control station capable of individually controlling a total of four valve control stations.

[0052]

[0053] Next, a method for installing and maintaining a mobile jack-up type plant module according to the present invention will be described.

[0054] Figure 9 is a flowchart illustrating a construction method according to one embodiment of the present invention.

[0055] As illustrated, the plant module installation and maintenance method according to the present invention largely includes an excavation step, an introduction step, a fixed structure mounting step, a leg insertion step, an elevating unit placement step, a plant module settling step, and a plant module positioning step. Here, the elevating unit placement step and the plant module settling step may be performed in reverse order.

[0056] In the above excavation step, the ground in the area where the plant module (P) will be installed is excavated to form a hole. Here, a method well known to those skilled in the art can be used to form the hole.

[0057] In the above-mentioned insertion step, a pile (10) having an inner surface of a certain diameter is inserted into the excavated hole. The pile (10) is manufactured to have a height, i.e., a length, that can be inserted or settled into the underground rock layer and firmly support the plant module (P) located above ground. In addition, the pile (10) may protrude above ground by a certain height, but it is preferable to have a height corresponding to the ground so that the fixed structure (20) mounted on top can be supported on the ground.

[0058] In addition, an excavation means such as a screw may be provided at the tip of the pile (10) being introduced, so that the process of introducing the pile (10) may involve excavation, and in this case, the excavation step and the introduction step may be performed simultaneously.

[0059] In the above-described fixed structure mounting step, a fixed structure (20) having a through hole formed to communicate with the inner surface of the pile (10) is mounted on the upper end of the pile (10). It is preferable that the fixed structure (20) be mounted on the upper end of the pile (10) in the through hole while the lower end is supported on the ground.

[0060] In the above leg insertion step, a clutch rail (30) having a longitudinally protruding portion (32) and a grooved portion (33) alternately formed on the outer surface is formed, and the leg (30) is inserted into the interior of the fixed structure (20) and the pile (10) so that the upper portion is exposed.

[0061] In the step of arranging the above-mentioned raising / lowering unit, the lower part of the raising / lowering unit (40) whose upper and lower parts are connected by an actuator (70) is supported by the fixed structure (20) and the upper part is arranged at a position corresponding to the upper part of the leg (30).

[0062] In the above plant module settling step, the plant module is settling on the top of the leg (30).

[0063] In the above plant module position determination step, the upper end of the raising / lowering unit (40) is inserted into the protruding portion (32) of the clutch rail (31) and the upper end of the raising / lowering unit (40) is raised / lowered together with the leg (30) by the driving of the actuator (70), thereby determining the position of the plant module (P).

[0064] At this time, when it is desired to raise the plant module (P), as illustrated in FIG. 10, in the plant module positioning step, a step is performed in which the fixed clutch driven by the fixed clutch cylinder in the fixed structure (20) is separated from the uneven portion (32) at the corresponding position, and the lower clutch (52) driven by the lower clutch cylinder (53) at the lower end of the actuator (70) is separated from the uneven portion (32) at the corresponding position (see FIG. 11). Thereafter, a step may be performed in which the actuator (70) is driven to raise the upper end together with the leg (30) based on the lower end of the raising / lowering unit (40). Next, when the plant module (P) reaches the set height, a step may be performed in which a fixed clutch driven by a fixed clutch cylinder in the fixed structure (20) is inserted into the uneven portion (32) at the corresponding position, and a lower clutch (52) driven by a lower clutch cylinder (53) at the lower end of the actuator (70) is inserted into the uneven portion (32) at the corresponding position.

[0065] Conversely, in the case where the plant module (P) is to be lowered, in the plant module positioning step, a step may be performed in which the fixed clutch driven by the fixed clutch cylinder in the fixed structure (20) is separated from the uneven portion (32) at the corresponding position, and the lower clutch (52) driven by the lower clutch cylinder (53) at the lower end of the actuator (70) is separated from the uneven portion (32) at the corresponding position. Thereafter, a step may be performed in which the actuator (70) is driven to lower the upper end together with the leg (30) based on the lower end of the raising / lowering unit (40). Next, when the plant module (P) reaches the set height, a step may be performed in which a fixed clutch driven by a fixed clutch cylinder in the fixed structure (20) is inserted into the uneven portion (32) at the corresponding position, and a lower clutch (52) driven by a lower clutch cylinder (53) at the lower end of the actuator (70) is inserted into the uneven portion (32) at the corresponding position.

[0066] In addition, when the position of the plant module (P) is determined, the elevation unit (40) can be dismantled for the elevation of another plant module (P), which is performed by detaching the lower clutch (52) driven by the lower clutch cylinder (53) at the lower end of the actuator (70) from the protruding portion (32) at the corresponding position, and then dismantling the elevation unit (40) while detaching the upper clutch (62) driven by the upper clutch cylinder (63) at the upper end of the actuator (70) from the protruding portion (32) at the corresponding position.

[0067] At this time, the lifting / lowering unit (40) may be subjected to pressure while adjusting the gap between the fixed structure (20) and the plant module (P), so that the actuator (70) may be driven to contract in the longitudinal direction to lower the upper end of the lifting / lowering unit (40) and the lifting / lowering unit (40) may be dismantled for easy dismantling.

[0068] Here, at all times except for the time of raising and lowering, including when dismantling the raising and lowering module, the fixed clutch driven by the fixed clutch cylinder in the fixed structure (20) must be inserted into the protruding portion (32) at the corresponding position to prevent the leg (30) from being raised and lowered, thereby enabling stable support of the plant module (P).

Claims

1. A pile inserted into a hole formed by excavating the ground in the area where the plant module is to be installed and having an inner surface of a certain diameter; A fixed structure formed with a through hole communicating with the inner surface of the above file and mounted on the top of the above file; A clutch rail is formed with grooves and protrusions alternately formed in the longitudinal direction on the outer surface, and is inserted into the interior of the fixed structure and the pile, and a leg on which a plant module is installed on the exposed upper end; and A mobile jack-up type plant module installation and maintenance system characterized by including a lifting and lowering unit having a lower end supported by the fixed structure, an upper end positioned corresponding to the upper end of the leg, the upper and lower ends connected by an actuator so as to be raised and lowered, and a clutch selectively insertable into a recessed portion of the clutch rail so as to be engaged with the rail.

2. In paragraph 1, The above-mentioned ascending and descending unit is, A lower support body having a lower yoke supported by the above fixed structure and having the above leg penetrating through the center, a lower clutch insertable into the above groove, and a lower clutch cylinder moving the lower clutch to insert or remove it from the above groove, and a lower clutch block having a shape that surrounds the clutch rail is combined; An upper support body having an upper yoke positioned spaced apart from the upper side of the lower support body and having the leg penetrating the center thereof, an upper clutch insertable into the grooved portion, and an upper clutch cylinder moving the upper clutch to insert or remove it from the grooved portion, and an upper clutch block having a shape surrounding the clutch rail; and A mobile jack-up type plant module installation and maintenance system, characterized in that it includes a plurality of actuators, each of which is connected to the lower support body and the upper support body at both ends and whose length is adjusted through hydraulic pressure.

3. In paragraph 2, The above fixed structure is, A fixed support mounted on the top of the file so that the leg penetrates through the center, A mobile jack-up type plant module installation and maintenance system characterized by including a fixed yoke combined with a fixed clutch block having a fixed clutch insertable into the above-mentioned recess and a fixed clutch cylinder moving the fixed clutch to insert or remove it from the above-mentioned recess.

4. In paragraph 3, The above clutch rails are formed in three rows at 120-degree intervals from the center of the leg section, A mobile jack-up type plant module installation and maintenance system, characterized in that the lower support, upper support, and fixed support each have three pairs of clutch blocks, and the actuators are installed in pairs on the side of the clutch blocks.

5. In paragraph 1, A mobile jack-up type plant module installation and maintenance system characterized by further including a control module having a hydraulic power pack and a valve control station and individually controlling the clutch and actuator.

6. Excavation step of excavating the ground in the area where the plant module will be installed to form a hole; A driving step of driving a pile having an inner surface of a certain diameter into the excavated hole; A step of mounting a fixed structure having a through hole formed to communicate with the inner surface of the above file on the top of the above file; A step of inserting a leg, in which a clutch rail having grooves and protrusions alternately formed in the longitudinal direction on the outer surface, into the interior of the fixed structure and the pile so that the upper part is exposed; A step of placing the lower part of the raising / lowering unit, the upper and lower parts of which are connected by an actuator, at a position corresponding to the upper part of the leg, while being supported by the fixed structure; a step of mounting the plant module on the top of the leg; and A method for installing and maintaining a plant module using a mobile jack-up method, characterized in that it comprises a step of determining the position of the plant module by raising and lowering the upper part of the raising and lowering unit together with the leg by driving the actuator while the upper part of the raising and lowering unit is inserted into the protruding part of the clutch rail.

7. In paragraph 6, In the above positioning step, When raising the above plant module, A step of detaching a fixed clutch driven by a fixed clutch cylinder in the above fixed structure from the uneven portion at the corresponding position, and detaching a lower clutch driven by a lower clutch cylinder at the lower end of the actuator from the uneven portion at the corresponding position; A step of driving the actuator to raise the upper part of the lifting / lowering unit together with the legs based on the lower part of the lifting / lowering unit; and A method for installing and maintaining a mobile jack-up type plant module, characterized by comprising the steps of: inserting a fixed clutch driven by a fixed clutch cylinder in the fixed structure into a recessed portion at the corresponding position when the plant module reaches a set height; and inserting a bottom clutch driven by a bottom clutch cylinder at the bottom of the actuator into the recessed portion at the corresponding position.

8. In paragraph 6, In the above positioning step, When lowering the above plant module, A step of detaching a fixed clutch driven by a fixed clutch cylinder in the above fixed structure from the uneven portion at the corresponding position, and detaching a lower clutch driven by a lower clutch cylinder at the lower end of the actuator from the uneven portion at the corresponding position; A step of driving the actuator to lower the upper part together with the legs based on the lower part of the lifting / lowering unit; and A method for installing and maintaining a mobile jack-up type plant module, characterized by comprising the steps of: inserting a fixed clutch driven by a fixed clutch cylinder in the fixed structure into a recessed portion at the corresponding position when the plant module reaches a set height; and inserting a bottom clutch driven by a bottom clutch cylinder at the bottom of the actuator into the recessed portion at the corresponding position.

9. In paragraph 6, A method for installing and maintaining a plant module in a mobile jack-up manner, characterized in that it further includes a step of dismantling the lifting / lowering unit while the lower clutch driven by the lower clutch cylinder at the bottom of the actuator is separated from the uneven portion at the corresponding position when the position of the plant module is determined, and the upper clutch driven by the upper clutch cylinder at the top of the actuator is separated from the uneven portion at the corresponding position.

10. In paragraph 9, In the dismantling step of the above-mentioned ascending and descending unit, A method for installing and maintaining a plant module using a mobile jack-up method, characterized in that the actuator is driven to contract in the longitudinal direction to lower the upper part of the lifting / lowering unit and the lifting / lowering unit is then dismantled.

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