KR100643088B1 - An apparatus working insulation for Membrane LNG Ship - Google Patents

Abstract

The present invention relates to a device for insulated work of liquefied natural gas carriers, and in particular, in order to be able to store and transport liquefied natural gas (Membrane LNG Ship) in the cargo tank, Insulation material is mounted and moved at a certain angle so that the epoxy resin can be easily attached to the ceiling and the wall without damaging the epoxy resin. It relates to a device for adiabatic operation of a liquefied natural gas carrier consisting of a pedestal formed radially to protect the elevating portion, the lifting portion for transferring the heat insulator in the vertical direction, the left and right conveying portion and the front and rear conveying portion.

According to the present invention, the lifting unit comprises a lifting platform which is vertically transported along the installed lifting frame; A plurality of pedestals installed on the elevating frame and each having wheels; A front and rear transfer part including an adjustment boom inserted into and out of the master boom installed in the platform; A left and right transfer unit which is easily detached from the adjustment boom and includes a turntable installed to be moved left and right; A tilting part easily detachable from the turntable and configured to include a tilt plate installed to rotate; Easily detached from the tilt plate, the fixing portion comprising a fixing stand is fixed to the heat insulating material; is provided with a device for thermal insulation work of the liquefied natural gas carrier.

LNG, LNG, Insulation, Cargo Tank

Description

An apparatus working insulation for Membrane LNG Ship             

1 is an overall perspective view of the present invention

2 is an overall plan view of the present invention.

Figure 3 is a detailed exploded perspective view of the insulation inventory of the present invention

Figure 4 is a side view of the insulation inventory of the present invention

5 is a detailed cross-sectional view of the portion “A” of FIG. 4.

6 is a detailed cross-sectional view of the tilting unit

7 is a detailed cross-sectional view of the left and right transfer unit;

8 is an operating state diagram of the lifting unit of the present invention

Figure 9 is an illustration of a state of attaching a heat insulating material using the present invention

10 is an exemplary view of a state in which the heat insulator is fixed to the holder of the present invention

※ Explanation of codes for main parts of drawing

1: lifting frame 2: lifting platform

3: brake 4: wheels

5: master boom 6: adjustment boom

7a, 7b, 7c: turntable 8: tilt plate

9 Insulation 10: Fixture

11a, 11b: Worm gear 12a, 12b: Worm wheel

13: Boom adjusting screw 14: Left and right feeding screw

15: fixing nut 16: support

17: tilting shaft 18: tilting screw

19: fastener 20: sliding disc

21: center axis 22: tilting Hendle

23: left and right transfer handles 24: post-war transfer handles

25: drive device 50: lifting unit

60: pedestal 70: front and rear transfer unit

80: left and right transfer unit 90: tilting unit

100: fixed part

The present invention relates to a device for insulated work of liquefied natural gas carriers, and in particular, in order to be able to store and transport liquefied natural gas (Membrane LNG Ship) in the cargo tank, Insulation material is mounted and moved at a certain angle so that the epoxy resin can be easily attached to the ceiling and the wall without damaging the epoxy resin. It relates to a device for adiabatic operation of a liquefied natural gas carrier consisting of a pedestal formed radially to protect the elevating portion, the lifting portion for transferring the heat insulator in the vertical direction, the left and right conveying portion and the front and rear conveying portion.

Membership type LNG carrier ships, which store and transport liquefied natural gas, are brittle due to the low temperature of LNG. In order to prevent the cargo tank in which the LNG is stored is insulated with a thick insulation to ensure a reliable insulation.

The heat insulating material used for this is thickly formed in the shape of a plate-shaped or bent at a certain angle so as to be attached to fit the shape of the cargo tank, one weight is 170 ~ 300Kg weight.

This weight insulation should be mounted on the ceiling or wall without damaging the epoxy resin applied for filling and waterproofing the cargo tank's inner wall. Working from above, the device must be manufactured at ultralight weight.

Therefore, good waterproofing and insulation are achieved, and special machinery is required to work with heavy-chain insulation materials at the position and posture to fit the shape of the cargo tank. There is also a need to protect the bottom of the cargo tank itself.

The present invention has been invented for the above purpose, by fixing the heat insulating material of the heavy weight body in a necessary posture to be attached to the ceiling and the wall of the cargo tank, etc., which is rotated and transported in multiple directions, heavy The present invention provides a device for thermal insulation of a liquefied natural gas carrier including a pedestal extending radially so as not to damage the lower surface of the cargo tank and the scaffold by dispersing the force of the weight.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

The present invention includes a lifting unit (50) comprising a lifting platform (2) to be moved up and down along the installed lifting frame (1); A plurality of pedestals (60) installed on the elevating frame (1), each having wheels (4) provided with brakes (3); A front and rear conveying part 70 including an adjusting boom 6 inserted into and out of the master boom 5 installed in the lifting platform 2; A left and right transport unit 80 including a turntable 7b which is easily detached from the adjustment boom 6 and installed to be transported from side to side; A tilting unit 90 including a tilt plate 8 that is easily detached from the turntable 7b and is installed to rotate; Easily detachable to the tilt plate (8), the fixing portion 100 comprising a fixing base 10 is fixed to the heat insulating material (9); characterized in that it comprises a.

The pedestal 60 is installed to extend radially to the lifting frame 1 in order to distribute the load to reduce the working pressure.

The front and rear conveying part 70 is rotated by the worm wheel 12a is engaged with the worm gear (11a) to be rotated, the boom adjusting screw 13 engaged through the center of the worm wheel (12a) is conveyed in the front and rear direction, The adjusting boom 6 fixed to one side end of the boom adjusting screw 13 is inserted and transported in the front-rear direction.

The left and right conveying unit 80 is engaged with the fixed nut 15 fixed to the turntable 7b by rotating the left and right conveying screw 14, and the turntable 7b is conveyed to the left and right by the rotation of the left and right conveying screw 14. It has a structure.

The tilting unit 90 includes a support 16 easily detachable from the turntable 7b, a tilt plate 8 pivoted on the support 16 by a tilting shaft 17, and the tilt plate ( And a worm gear 11b fixed to the tilting shaft 17 engaged and rotated by the worm wheel 12b, which is supported at the end of the worm wheel 12b and pierced through the center of the worm wheel 12b. , The tilt plate 8 is rotated by the rotation of the tilting shaft 17.

The fixture 10 has a structure in which the bent portion is bent twice at an obtuse angle to form a top angle and a side surface at right angles, thereby tightly fixing the heat insulating material 9 formed by bending at various angles at right angles or obtuse angles.

And, each of the components have a structure that is rotated to the appropriate position to be fastened, the fixing portion 100 and the tilting portion 90, the tilting portion 90 and the left and right transfer unit 80, the left and right transfer unit 80 and This is the case back and forth transfer unit 70.

That is, a plurality of fastening holes are formed at equal intervals on the lower surface of the fixing part 100 at equal intervals, and a turntable 7a having a plurality of fastening holes at equal intervals is installed on the upper portion of the tilt plate 8. In the state in which the fixing part 100 is rotated to a desired position, the fastener 19 is inserted into the fastening hole formed in the lower surface of the fixing part 100 and the fastening hole of the turntable 7a.

A circular recess groove is formed in the turntable 7a, and a sliding disc 20 having a plurality of fastening holes formed at equal intervals concentrically in the recess groove is installed in place of the bearings, and the lower surface of the fixing part 100 The sliding disc 20 and the turntable 7a may be implemented in a structure in which the sliding plate 20 is fixed integrally by the fastener 19. Of course, the central axis 21 may be fastened to the lower portion of the fixing part 100 and the rotation center of the sliding disc 20 and the turntable 7a.

In addition, the tilting part 90 supports the support plate 16 formed with a plurality of fastening holes at equal intervals on the lower surface of the tilting plate 8, and pivots the tilt plate 8 in a concentric manner on the turntable 7b of the left and right transfer part 80. A plurality of fastening holes are formed at equal intervals, and the fastener 19 is inserted into the fastening hole formed on the lower surface of the support 16 and the fastening hole of the turntable 7b while the tilting unit 90 is rotated to a desired position. Is fastened.

In addition, the turntable is formed on the lower surface of the left and right conveying portion 80 in a plurality of fastening holes in the same interval, and a plurality of fastening holes in the same space on the upper portion of the adjustment boom 6 of the front and rear conveying portion 70 at equal intervals. (7c) is installed, the fastener 19 is inserted into the fastening hole formed in the lower surface of the left and right transport portion 80 and the fastening hole of the turntable (7c) in a state that the left and right transfer portion 80 is rotated to a desired position Is fastened.

The present invention having the structure as described above is to be constructed in ultra-lightweight because it is working on the scaffold installed in the cargo tank of the LNG carrier, and the structure is adjusted at various angles to attach the heat insulator (9) to the shape of various bends, such as ceiling and wall surface. It must have a distributed load structure to protect the inside of the scaffolding and cargo tanks.

In order to have a structure in which the load is distributed as described above, in the present invention, as shown in FIGS. 1 and 2, the pedestal 60 is radially installed at the bottom of the elevating unit 50 to fix the heat insulating material 9. By distributing the load of the whole device to a wide surface, it protects the lower surface of the cargo tank or the plywood of the scaffold installed thereon. The method of fixing the heat insulating material 9 to the holder 10 can be used in various ways, such as bolts, pins, and the structure for attaching the heat insulating material 9 to the holder 10 is not a technical configuration of the present invention, detailed description thereof will be omitted. do.

First, an example of the operation of attaching the heat insulator 9 using this apparatus is shown in FIG. 9, and the state of the fastener 10 of the fixing part 100 in which the heat insulator 9 of various shapes is fixed is shown in FIG. 10. Is shown.

Thus, in order to attach the heat insulating material 9 of 170-300Kg heavy weight to the inner wall surface or ceiling of a cargo tank, the fixing part 100 is attached to the turntable 7a of the tilting part 90 at a suitable angle required for an operation. The fastener 19 is inserted into the fastening hole and fixed by the rotation. And as shown in Figures 3 and 5 so that the fixing portion 100 is fixed to the insulator 9 of the weight body can be flexibly rotated in the tilting portion 90, the role of the bearing This is because it is advantageous to support the weight rather than the bearing, and it is used as a substitute for the bearing because it is not a structure that rotates continuously.

The reason for the fastening by rotating it at various angles is that the shape of the cargo tank is not a flat plane but is made of a curved surface that is made of a pressure vessel that can withstand pressure, and thus the heat insulating material 9 attached thereto is also flat. Various shapes, angular shapes and the like. In order to attach the heat insulator 9, a device capable of changing to various positions is required, and the device of the present invention has a structure capable of performing the above object.

As described above, when the position of the fixing part 100 is determined and fixed, the heat insulating material 9 is fixed to the fixing table 10. The heat insulator 9 has various shapes such as a flat plate, an angle of 90 degrees, an obtuse angle, and the like, as shown in FIG. 10. The present invention has a fixing stand 10 to which it can be fixed. That is, as shown in Figure 3, the bent corner is bent at an obtuse angle twice as shown in FIG. 3 so that the upper surface and the side portion form a right angle.

Therefore, the heat insulating material 9 formed at right angles is fixed to the upper and side surfaces of the holder 10, and the heat insulating material 9 formed at an obtuse angle is fixed to the upper surface and the inclined surface, and the flat type is attached to the upper surface. It may be fixed. And the heat insulating material (9) is fixed to the holder 10 by bolts, pins, etc., the bolts or pins are fastened or plugged into the heat insulating material (9) which is placed on the upper portion from the bottom of the holder 10, the heat insulating material (9) and the holder (10) can be integrated to work, and when the construction of the heat insulator (9) is finished, the bolt, pin or the like may be removed.

Next, the fixing part 100 should be tilted and adjusted to be attached to the inclined surface as shown in FIG. 9, and such tilting is performed by the tilting part 90.

The tilting unit 90 is shown in detail in FIGS. 3, 4, and 6, and when the tilting shafts 22 installed at the ends of the tilting shaft 17 are rotated, the worm gear 11b fixed to the tilting shaft 17 is rotated. Is rotated while the worm wheel 12b engaged with it rotates. The worm wheel 12b is installed to rotate in place, and the tilting screw 18 is fastened to the center of rotation of the worm wheel 12b, but one end thereof is held on the tilt plate 8. Accordingly, when the tilting Hens 22 are rotated, the tilting shaft 17 is rotated, and the worm wheel 11b fixed to the tilting shaft 17 is rotated to rotate the worm wheel 12b engaged thereto. And while the tilting screw 18 is fastened to the worm wheel (12b) is transferred to tilt the tilt plate (8) about the tilting axis (17). Naturally, the tiltinghens 22 may be replaced with other devices such as an electric motor.

When tilting at an appropriate angle in the above process, it is transferred to the left and right and front and rear to be attached to the ceiling or wall surface, the post-work relationship of the tilting or horizontal movement or forward and backward movement is not absolute and may be appropriate according to the work situation.

The left and right transport of the heat insulator 9 is made by the left and right transport unit 80. As shown in detail in FIG. 7, when the left and right feed handles 23 are turned counterclockwise or clockwise, the left and right feed screws 14 are rotated, and the fixing nut 15 to which the left and right feed screws 14 are fastened is a turntable. Since it is fixed to 7b, the turntable 7b is conveyed to the left or the right by the left and right conveying screw 14 rotated in place.

The transfer of the turntable 7b transfers the fixing part 100 fastened to the turntable 7b, thereby eventually transferring the heat insulating material 9 to the left or the right.

Here, instead of the left and right transfer handles 23, it may be replaced with another configuration such as an electric motor, and devices for guiding the left and right transfer of the turntable 7b may be added.

In this case, the fixing part 100 may be installed to rotate at a predetermined angle, and the tilting part 90 may also be rotated and fixed at a predetermined angle, so that the insulator 9 tilted at a predetermined angle may be rotated at various angles. It has a structure that can be rotated and attached.

Next, the front and rear conveyance unit 70 is responsible for the forward and backward conveyance, which is also performed by the worm gear 11a and the worm wheel 12a. This is illustrated in FIGS. 3 and 4.

When the front and rear transfer handles 24 fixed to the master boom 5 are turned, the worm gear 11a rotated in place rotates, and the boom adjusting screw 13 fastened to the center of the worm gear 11a in the front and rear directions. Will be transferred. Since one end of the boom adjusting screw 13 is fixed to the adjusting boom 6 inserted into the master boom 5, the forward and backward movement of the boom adjusting screw 13 causes the adjusting boom 6 to be moved forward and backward. .

The front and rear conveyance of the adjusting boom 6 transfers the left and right conveying unit 80, the tilting unit 90, and the fixing unit 100 installed in the front and rear directions, thereby transferring the heat insulating material 9 in the front and rear directions.

And the coupling of the front and rear transfer unit 70 and the left and right transfer unit 80 has a structure that is easily rotated like the coupling of the other components are coupled to the fastener 19.

In the above process, the heat insulating material 9 is fixed and tilted, and is conveyed in the left and right directions and the front and rear directions. In order to match the height of the lifting unit 50 is in charge, the master boom (5) is fixed to the lifting platform (2) is transported up and down along the installed lifting frame (1).

The lifting and lowering of the lifting platform 2 is made by a driving device 25 composed of a hydraulic pump, a hydraulic cylinder, a battery, and the like, and the lifting frame 1 may be configured in two stages to increase the height. And the configuration of the lifting unit 50 has a general lifting structure.

Next, the pedestal 60 is provided as a self-transporting means and a supporting means of the present invention, the wheels provided with the brake (3) at the end of the plurality of pedestals 60 extending radially at the bottom of the elevating portion 50 ( 4) is installed. Therefore, it is possible to reduce the weight compared to the overall structure, it is possible to protect the scaffolding or the cargo tank itself by spreading the overall load widely. And each wheel 4 is equipped with a brake 3 can be fixed and work can be safe.

As described above, the present invention can be tilted and rotated in a number of places, and the left, right, front and rear and top and bottom positions can be adjusted to easily mount and work on the heat insulating material 9.

As described above, the present invention is rotated and transported in multiple directions to fix the heavy weight heat insulating material 9 to a necessary posture and attach it to the ceiling and the wall of the cargo tank, thereby facilitating difficult work, and labor force. Reduction is achieved, and it is possible to work precisely and quickly by fine adjustment, which improves the work efficiency and improves safety and quality by safe insulation construction of cargo tank of liquefied natural gas carrier which has a risk of large accident. There is.

Claims (9)

A lifting unit 50 including a lifting platform 2 which is vertically conveyed along the installed lifting frame 1; A plurality of pedestals (60) installed on the elevating frame (1), each having wheels (4) thereon; A front and rear conveying part 70 including an adjusting boom 6 inserted into and out of the master boom 5 installed in the lifting platform 2; A left and right transport unit 80 including a turntable 7b which is easily detached from the adjustment boom 6 and installed to be transported from side to side; A tilting unit 90 including a tilt plate 8 that is easily detached from the turntable 7b and is installed to rotate; Easily detachable to the tilt plate (8), the fixing portion 100 comprising a fixing stand 10 is fixed to the heat insulating material (9); device for thermal insulation work of a liquefied natural gas carrier. The device of claim 1, wherein the pedestal (60) extends radially on the elevating frame (1) to distribute the load to reduce the working pressure. The boom adjusting screw 13 of claim 1, wherein the worm wheel 12a is engaged with the worm gear 11a that is rotated, and the boom adjusting screw 13 is engaged with the worm wheel 12a. Is transferred to, the boom adjustment screw (13) fixed to one side end of the adjustment boom (6) is inserted into the liquefied natural gas carrier ship for insulated operation is conveyed in the front and rear direction. The left and right conveying unit 80 is engaged with the fixing nut 15 fixed to the turntable 7b, and the turntable 7b is rotated by the left and right conveying screw 14. Apparatus for heat insulation of liquefied natural gas carrier which is conveyed from side to side. The tilting unit (90) of claim 1, wherein the tilting unit (90) is detachably attached to the turntable (7b), the tilting plate (8) pivoted by the tilting shaft (17) on the support (16), Tilt screw 18, which is supported at the end of the tilt plate 8 and engaged through the center of the worm wheel 12b, and a worm gear 11b fixed to the tilting shaft 17 that is engaged and rotated by the worm wheel 12b. And a tilt plate (8) is rotated by the rotation of the tilting shaft (17). The liquefaction according to claim 1, wherein the bent portion of the holder 10 is bent twice at an obtuse angle to form a right angle at an upper surface and a side surface, and is liquefied to firmly fix the heat insulating material 9 formed by bending at various angles at right angles or obtuse angles. Apparatus for thermal insulation of natural gas carriers. The turntable 7a according to claim 1, wherein a plurality of fastening holes are formed at equal intervals on the lower surface of the fixing part 100 at equal intervals, and a plurality of fastening holes are formed at equal intervals on the top of the tilt plate 8 at equal intervals. Is installed, and the fastener 19 is inserted into the fastening hole formed in the lower surface of the fixing part 100 and the fastening hole of the turntable 7a while the fixing part 100 is rotated to a desired position. Apparatus for thermal insulation of gas carriers. According to claim 1, the tilting unit 90 is a support 16 formed with a plurality of fastening holes at equal intervals on the lower surface condenses the tilt plate (8), the turntable (7b) of the left and right transfer unit (80) There is a plurality of fastening holes are formed at equal intervals in the concentric circle, the fastener 19 is fastened to the turntable (7b) formed in the lower surface of the support 16 in the state in which the tilting portion 90 is rotated to a desired position Device for thermal insulation of LNG carriers inserted into a ball. According to claim 1, wherein a plurality of fastening holes are formed concentrically on the lower surface of the left and right conveying portion 80 at equal intervals, a plurality of fastening holes concentrically on the upper portion of the adjusting boom 6 of the front and rear conveying portion 70, etc. The turntables 7c formed at intervals are installed so that the fasteners 19 are fastened to the fastening holes formed on the lower surface of the left and right transfer parts 80 and the fastening holes of the turntable 7c while the left and right transfer parts 80 are rotated to a desired position. Apparatus for insulation work of liquefied natural gas carriers inserted and fastened.

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