KR101771993B1 - A moving frame of a membrane panel carrying system - Google Patents

A moving frame of a membrane panel carrying system Download PDF

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Publication number
KR101771993B1
KR101771993B1 KR1020150161561A KR20150161561A KR101771993B1 KR 101771993 B1 KR101771993 B1 KR 101771993B1 KR 1020150161561 A KR1020150161561 A KR 1020150161561A KR 20150161561 A KR20150161561 A KR 20150161561A KR 101771993 B1 KR101771993 B1 KR 101771993B1
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KR
South Korea
Prior art keywords
storage tank
liquefied gas
gas storage
membrane
moving frame
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Application number
KR1020150161561A
Other languages
Korean (ko)
Other versions
KR20170057984A (en
Inventor
진교국
윤인수
이영범
양영철
한해철
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한국가스공사
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Priority to KR1020150161561A priority Critical patent/KR101771993B1/en
Publication of KR20170057984A publication Critical patent/KR20170057984A/en
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Publication of KR101771993B1 publication Critical patent/KR101771993B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
    • B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
    • B63B25/08—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid
    • B63B25/12—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed
    • B63B25/16—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods fluid closed heat-insulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B9/00—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0146—Two-phase
    • F17C2225/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/013—Reducing manufacturing time or effort
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0102—Applications for fluid transport or storage on or in the water
    • F17C2270/0105—Ships
    • F17C2270/0107—Wall panels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The moving frame of the membrane panel transportation system according to the present invention includes a moving rail provided in the circumferential direction of the liquefied gas storage tank so as to guide the carrier roller formed on the membrane carrier, A rack gear provided in a circumferential direction of the liquefied gas storage tank, and a main frame supporting the moving rail and the rack gear, wherein the membrane carrier holding the membrane panel to be installed on the inner wall of the liquefied gas storage tank is stored in a liquefied gas storage The present invention makes it possible to efficiently transport the membrane panel to be installed on the inner wall of the liquefied natural gas storage tank to the installation position by guiding the gas to be moved along the circumferential direction of the tank.

Description

A MOVING FRAME OF A MEMBRANE PANEL CARRYING SYSTEM

The present invention relates to a membrane panel carrying system, and more particularly to a moving frame of a membrane panel carrying system installed in a liquefied gas storage tank.

Liquefied gas such as LNG (Liquefied Natural Gas) or LPG (Liquefied Petroleum Gas) is obtained by cooling natural gas or petroleum gas at a very low temperature (about -163 ° C. in the case of LNG), and its volume is considerably larger It is very suitable for long distance transportation through the sea.

LNG carriers and other liquefied gas carriers are used to transport liquefied gas to the sea for unloading the liquefied gas to the onshore site and include a liquefied gas storage tank capable of withstanding the extremely low temperature of the liquefied gas.

Liquefied gas storage tanks can be classified into independent tanks and membrane types depending on whether the load of the cargo directly acts on the insulation. Membrane-type storage tanks are divided into GTT NO 96 type and Mark III type. Independent tank type storage tanks are divided into MOSS type and IHI-SPB type.

GTT NO 96 and GTT Mark III were formerly called GT type and TGZ type. In 1995, the names of GT (GT) and Technigaz (TGZ) were changed to GTT (Gaztransport & Technigaz) 96 type, and the TGZ type is replaced with the GTT Mark III type.

The storage tank of the GT NO 96 type consists of a secondary insulation wall, a secondary sealing wall, a primary insulation wall and a primary sealing wall laminated on the inner surface of the hull from below. The primary and secondary sealing walls consist of a 0.5 to 0.7 mm thick Invar steel (36% Ni) membrane, and the primary and secondary walls are plywood boxes And perlite.

In the case of GT NO 96, the primary sealing wall and the secondary sealing wall have almost the same level of liquid tightness and strength, so that the secondary sealing wall can safely support the cargo for a considerable period of time when the primary sealing wall is leaked. In addition, since the GT NO 96 sealing wall is straight, it is easier to weld than the TGZ Mark Ⅲ type corrugated membrane, and the automation rate is higher. However, the overall welding length is longer than that of the TGZ Mark Ⅲ type.

On the other hand, the storage tank of the TGZ Mark III type, like the storage tank of the GT NO 96 type, is stacked from the bottom on the inner surface of the hull with a secondary insulating wall, a secondary sealing wall, a primary insulating wall and a primary sealing wall . However, the primary sealing wall of the TGZ Mark III type storage tank is made of a stainless steel membrane having a thickness of 1.2 mm, the secondary sealing wall is made of a triplex membrane, and the primary insulating wall and the secondary insulating wall Is made of polyurethane foam or the like.

In the case of the TGZ Mark III type, the membrane forming the sealing wall has a corrugated wrinkle portion, and the contraction due to the liquefied gas at a cryogenic temperature is absorbed by the wrinkled corrugation portion, so that no large stress is generated in the membrane. The TGZ Mark Ⅲ type heat dissipation system is not easy to reinforce due to its internal structure. Due to the nature of the secondary sealing wall, it has a weak function to prevent leakage of liquefied gas compared to the secondary sealing wall of GT NO 96 type.

The membrane having a liquefied gas sealing function is made of a metal material resistant to low temperature brittleness so that the liquefied gas can be expanded or shrunk in response to a change in temperature and load generated when the liquefied gas is injected into or removed from the storage tank Design and manufacture.

In the membrane provided on the inner wall of the liquefied gas storage tank, the TECHNIGAZ system in which a corrugated portion is formed as a countermeasure against thermal expansion and heat shrinkage, and the GAZTRANSPORT system employing a flat membrane using the INVAR characteristic are widely known.

The membrane is formed by horizontally connecting a plurality of plate-shaped membrane panels. Since the conventional membrane panel of GTT has a size of about 3000 mm × 1000 mm × 1.5 tons and weighs about 40 kg and the membrane panel must be installed on all the inner walls including the ceiling and floor of the liquefied gas storage tank, Which was difficult to carry.

In this manner, the manual transfer of the membrane panel required a manpower to move the membrane panel to the place where the membrane panel was installed, in addition to the manpower for installing the membrane panel.

In addition, it takes a long time to transport the membrane, and the process of installing the membrane in the liquefied gas storage tank is inefficient.

In order to carry the membrane panel manually, it must be of a human weight. Therefore, the membrane panel has to be made small and the membrane panel needs to be made smaller, which requires more membrane panels than the membrane panel. There was also a problem that it took more time to install the panel.

1. Korean Patent Publication No. 10-2007-0090709 2. Korean Patent Publication No. 10-2007-0090710 3. Korean Patent Publication No. 10-2007-0090711

It is an object of the present invention to provide a moving frame in a system for efficiently transporting a membrane panel to be installed on the inner wall of a liquefied natural gas storage tank to a mounting position.

The moving frame of the membrane panel transportation system according to an embodiment of the present invention includes a moving rail provided in a circumferential direction of a liquefied gas storage tank so as to guide a carrier roller formed on a membrane carrier, And a main frame for supporting the moving rail and the rack gear so as to engage with the gears, and a membrane carrier for holding a membrane panel to be installed on the inner wall of the liquefied gas storage tank, To be moved along the circumferential direction of the liquefied gas storage tank.

Here, the rack gear has a structure in which a part of the rack gear is folded by hinge coupling, and the main frame is slid in a longitudinal direction in a state where a part of the rack gear is folded.

In addition, the main frames are individually provided on the circumferential surfaces of the liquefied gas storage tanks, and are independently slidable in the longitudinal direction.

The main frame may be formed of a rectangular frame, and a supporting frame for supporting the moving rail and the rack gear may be formed on both sides.

Alternatively, the moving rail and the rack gear are coupled to a side surface of the main frame.

Further, the moving rail has a round cross-sectional shape, and the end portion has a shape in which the diameter of the cross-section is narrowed.

Here, the moving rail and the rack gear are spaced apart from each other to prevent interference with each other due to the carrier roller and the pinion gear engaged with the moving rail and the rack gear.

It is further characterized in that the moving frame is equipped with a horizontal roller and the horizontal roller is slidable in the longitudinal direction of the liquefied gas storage tank by being guided by a longitudinal rail provided on the circumferential surface of the liquefied gas storage tank.

Here, the horizontal rollers are provided on the upper side and the lower side of the main frame, respectively.

Separately, it may further comprise longitudinal control means for controlling that the main frame is operated in the longitudinal direction of the liquefied gas storage tank.

The longitudinal direction control means prevents the horizontal roller from rotating in the circumferential direction of the membrane carrier, and rotates the horizontal roller in the longitudinal direction of the main frame.

The moving frame is equipped with a horizontal roller, and the longitudinal direction control means controls the longitudinal movement by controlling the friction between the longitudinal rail provided on the circumferential surface of the liquefied gas storage tank and the horizontal roller. do.

Wherein the horizontal roller is paired to be opposed to the longitudinal rail and the longitudinal control means causes the horizontal roller to be engaged to move in a direction away from the center of the longitudinal rail, Is slidable on the longitudinal rails.

The moving frame of the membrane panel transportation system according to another embodiment of the present invention guides the membrane carrier holding the membrane panel to be installed on the inner wall of the liquefied gas storage tank so as to be moved along the circumferential direction of the liquefied gas storage tank , A horizontal roller is mounted on the main frame, and the horizontal roller is guided by a longitudinal rail provided on the circumferential surface of the liquefied gas storage tank, thereby being slidable in the longitudinal direction of the liquefied gas storage tank.

The moving frame of the membrane panel transportation system according to another embodiment of the present invention includes a moving rail provided in the circumferential direction of the liquefied gas storage tank so as to guide the carrier roller formed on the membrane carrier, A rack gear provided in the circumferential direction of the liquefied gas storage tank so as to engage with the pinion gear formed in the rack, a main frame supporting the moving rail and the rack gear, and a longitudinal rail provided on the circumferential surface of the liquefied gas storage tank A horizontal roller guided, and longitudinal control means for controlling that the main frame is operated in the longitudinal direction of the liquefied gas storage tank.

According to the membrane panel transportation system having the moving frame of the present invention, it is possible to utilize the manpower required for carrying the membrane panel for other operations and to increase the transport speed of the membrane panel, so that the process of installing the membrane in the liquefied gas storage tank It is efficient.

In addition, according to the membrane panel transportation system of the present invention, since the membrane panel can be made larger than when the membrane panel is manually transported, the time for installing the membrane in the liquefied gas storage tank can be shortened.

According to the moving frame of such a membrane panel carrying system, by employing the breaking means in carrying the carrier in the longitudinal direction of the liquefied gas storage tank, the operator can perform the work more easily, and when not moving in the longitudinal direction So that the membrane panel can be moved more stably in the circumferential direction.

Also, when the membrane panel is transported in the circumferential direction, it can be smoothly moved even when the bent circumferential surface is moved due to the chamfer configuration.

1 schematically illustrates a membrane panel transport system according to the present invention.
FIG. 2 is a schematic view showing a membrane panel transportation system according to the present invention in a stereoscopic view.
Figure 3 schematically illustrates the operation of a membrane panel transport system according to the present invention.
4 and 5 show the moving frame of the membrane panel transportation system according to the present invention in more detail.
6 schematically shows a longitudinal transporting means for moving the moving frame according to the present invention.
7 schematically shows an example of the construction of the moving frame according to the present invention.
8 illustrates the operation of one embodiment of the moving frame of the membrane panel transportation system according to the present invention.
Fig. 9 schematically shows an example of the construction of the moving frame according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the constituents of the drawings, it is to be noted that the same constituents are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 schematically illustrates a membrane panel transport system according to the present invention.

1, the membrane panel P is introduced into the liquefied gas storage tank through an opening on one side of the liquefied gas storage tank T, and is moved to the bottom surface of the liquefied gas storage tank T and waits .

In the interior of the liquefied gas storage tank, the charged membrane panel P can be moved to the bottom through the scaffold S, which is optionally installed.

The present invention thus moves the membrane panel along the circumferential direction from the inner bottom surface of the liquefied gas storage tank to the mounting position as shown, and the membrane carrier carrying the membrane panel is again retrieved to the bottom and ready to carry the next membrane panel do.

Although one embodiment of the present invention illustrates the membrane panel being transported in a clockwise direction around the liquefied natural gas as shown, it may be in a different direction, and the membrane carriers carrying the membrane panel may be operated simultaneously, To allow the membrane panel to be transported.

FIG. 2 is a schematic perspective view of a membrane panel transportation system according to the present invention, and FIG. 3 is a schematic view illustrating the operation of the membrane panel transportation system according to the present invention.

The membrane panel transportation system according to an embodiment of the present invention includes a membrane carrier 100 on which a membrane panel to be installed on the inner wall of a liquefied gas storage tank is mounted, a membrane carrier 100, And a longitudinal conveying means 300 for conveying the membrane carrier 100 along the longitudinal direction of the liquefied gas storage tank.

The membrane carrier 100 has a membrane panel loaded into the liquefied gas storage tank to be seated and moved to a position where the membrane panel is to be installed by the membrane conveying means.

The membrane panels are fabricated in the form of plates of steel and are joined to the entire liquefied gas storage tank, and the membrane carrier 100 seats and carries such a single membrane panel.

The membrane carrier 100 is provided with means for seating the membrane panel and means for mounting and fixing the membrane panel. The membrane carrier 100 is held in a fixed state to hold the membrane panel, And the like.

Membrane carrier means for moving the membrane carrier 100 is divided into a moving frame 200 and a longitudinal direction conveying means 300. As shown in FIG. 3, the membrane carrier moves along the circumferential direction from the starting point of the bottom surface by the moving frame. , The moving frame is moved in the longitudinal direction by the longitudinal direction conveying means to be conveyed to the corresponding position.

The moving frame 200 carries the membrane carrier 100 along the circumferential direction of the liquefied gas storage tank and the longitudinal transport means 300 is for transporting the membrane carrier 100 along the longitudinal direction of the liquefied gas storage tank The longitudinal direction L of the liquefied gas storage tank T is parallel to the bottom surface of the liquefied gas storage tank and the circumferential direction of the liquefied gas storage tank T is a chamfered configuration, Side direction. The chamfer is a configuration for reducing sloshing of the storage tank.

FIGS. 4 and 5 partially illustrate the moving frame of the membrane panel transportation system according to the present invention in more detail.

4 and 5, the moving frame of the membrane panel transportation system according to an embodiment of the present invention will be described in more detail.

The membrane panel transport system according to an embodiment of the present invention transports a membrane carrier 100 on which a membrane panel is mounted to an installation site determined by the moving frame 200 and the longitudinal transport means 300, Is separated from the membrane carrier (100) to enable installation of the membrane panel.

The moving frame 200 includes a main frame 210 provided in a rectangular shape and a moving rail 220 and a rack gear 230 coupled to both sides of the main frame 210.

The rectangular main frame 210 is fabricated to fit the circumferential side surface shape of the liquefied gas storage tank and has an upper chamfer, a lower chamfer, a vertical surface, and a roof The movable rail 220 and the rack gear 230 are coupled to both sides and a separate support frame 240 for coupling the movable rail 220 and the rack gear 230 is provided on both sides As shown in FIG.

The moving rail 220 is fixed to the side surface of the main frame 210 or the support frame 240 and has a circular cross sectional shape to face and support the carrier roller 120 of the membrane carrier 100, And is formed in the circumferential direction of the gas storage tank.

These moving rails 220 are separated into lengths corresponding to the upper chamfer, the lower chamfer, the vertical, and the roof so as to conform to the lateral shape of the liquefied gas storage tank. .

Also, in one embodiment of the present invention, the transport of the membrane carrier 100 in the lower chamber of the liquefied gas storage tank has been shown to begin, which may be configured to start from the bottom or side.

However, in order that the carrier roller 120 of the membrane carrier 100 on the starting line of the membrane carrier 100 can stably engage with the moving rail 220 of the moving frame 200 to start smoothly, One side which is the starting point of the rail 220 may be provided in a sharp, so-called cone shape.

The rack gear 230 is fixed to the side surface of the main frame 210 or the support frame 240 so as to be engaged with the pinion gear 130 of the membrane carrier 100 to be described later, And is formed in the circumferential direction.

The rack gear 230 is divided into lengths corresponding to the upper chamfer, the lower chamfer, the vertical, and the roof so as to conform to the lateral shape of the liquefied gas storage tank. .

The main frame 210, the moving rail 220, and the rack gear 230 are separately manufactured in various stages according to the size, shape, etc. of the liquefied gas storage tank, and are introduced into the liquefied gas storage tank. And the like.

The membrane carrier 100 is provided with a carrier frame 110 having a constant shape and means for seating, fixing, and disengaging the membrane panel and having carrier rollers 120 The pinion gear 130 is rotated along the direction of the rack gear 230 of the moving frame 200 so that the moving rail 220 of the moving frame 200 is rotated with the carrier roller 220, So that the membrane carrier 100 can be carried along the circumferential direction of the liquefied gas storage tank with the lid 120 engaged.

When the rack gear and the pinion gear are combined as described above, a separate motor structure for rotating the pinion gear 130 is required.

Here, the carrier roller 120 may be provided on both sides for stability, and the carrier roller 120 provided on the upper and lower sides of both sides may be provided with two rollers that are engaged with the moving rail 220 And a pair of such rollers are provided in a set so that they can be operated more firmly.

It is further preferred that such a carrier roller 120 is coupled to the membrane carrier 100 by a separate support.

It is preferable that the moving rail 220 and the rack gear 230 of the moving frame are appropriately spaced apart from each other in order to prevent movement interference so that the carrier roller 120 and the pinion gear 130 of the membrane carrier, It is preferable to arrange them so as to be spaced apart from each other.

The city is an example designed not to interfere vertically between the two.

Figure 6 shows in part a longitudinal transport means 300 which allows the moving frame of the membrane panel transport system according to the invention to be moved along the length of the liquefied gas storage tank.

The longitudinal conveying means 300 includes a horizontal plate 310 provided horizontally and longitudinally with respect to the bottom surface of the liquefied gas storage tank and a rail guide 320 and a rail guide 320 coupled to the horizontal plate. (Not shown).

The horizontal plate 310 is provided in the longitudinal direction L horizontally with respect to the bottom surface of the liquefied gas storage tank, and is installed on the inner wall of the liquefied gas storage tank.

The rail guide 320 is fixed to the horizontal plate 310 and fixes the guide fixing plate 330 to the horizontal plate 310 and fixes the rail guide 320 to the guide fixing plate 321 in order to fix the rail guide 320. [ .

The rail guide 320 includes a coupling rod 321 to which the longitudinal rail 340 is inserted and coupled and a guide fixing plate 330 for allowing the coupling rod 321 to be separated from the guide fixing plate 330 And a guide body 322 which is fixed to the guide body 322.

A plurality of rail guides 320 are provided in the longitudinal direction of the horizontal plate 310 so that a plurality of longitudinal rails 340 are partially coupled.

The longitudinal conveying means 300 is constructed in this way and the horizontal roller 250 of the circumferential conveying means 200 is engaged with the longitudinal rail 340 so that the circumferential conveying means 200 is supported on the longitudinal rail 340 To be able to exercise.

Such longitudinal motion may also be operated by rack gears and pinion gears or other motion means, such as the circumferential motion discussed above, or otherwise longitudinal motion may be performed by the operator But also manually.

The horizontal rollers 250 are provided on the upper side and the lower side of the main frame 210 of the moving frame 200 and may be provided on both sides of the upper and lower sides for stability, The horizontal rollers 250 provided on both the left and right sides are preferably provided with two rollers that are opposed to the moving rail 340 and a pair of such rollers are provided in a set so as to operate more firmly .

It is more preferable that such a horizontal roller 250 is coupled to the main frame 210 of the moving frame 200 by a separate support.

Meanwhile, the horizontal plates 310 are installed according to the dimensions of the main frame 210 of the moving frame 200, which are installed separately from each other along the circumferential surface of the liquefied gas storage tank.

That is, the moving frame 200, which is manufactured to have a size suitable for the side surface shape of the liquefied gas storage tank composed of the upper chamfer, the lower chamfer, the vertical surface, and the roof, A horizontal roller 250 provided on the upper side and a lower side of the movable frame 300 is disposed between the moving frames 200 so that the horizontal rollers 250 can be engaged with the longitudinal rails 340, A pair of the longitudinal transporting means 300 is provided to guide the upper moving frame and the lower moving frame, respectively.

In general, when the moving frame 200 is manufactured to have a length corresponding to one surface according to the shape of the periphery of the liquefied gas storage tank, the horizontal plate 310 of the longitudinal transportation means 300 is installed at each corner of the circumferential surface Depending on the shape and size of the liquefied gas storage tank, two or more moving frames 200 may be provided on one side. In such a case, the longitudinal transporting means 300 may be provided between the moving frames Respectively.

As described above, the moving frame 200 enables the membrane carrier 100 to be moved along the circumferential direction of the liquefied gas storage tank, and the moving frame 200 carried on the circumferential surface of the corresponding height has the lengthwise transportation means 300 ) Along the longitudinal direction of the liquefied gas storage tank to transport the membrane carrier 100 to the installation position.

The longitudinal transporting means 300 is provided on the circumferential surface of the liquefied gas storage tank, and the lengthwise transporting means 300 provided on each of the surface units are separately moved on a surface basis, 200 in the longitudinal direction.

However, in order to carry the membrane carrier in the circumferential direction by the moving frame 200, alignment of the moving frame 200 is required.

This is for the alignment of the moving rail 220 and the rack gear 230 of the moving frame 200 installed on each side and the membrane carrier moves along the moving rail 220 and the rack gear 230 aligned in the circumferential direction. . For this purpose, a separate alignment means or fixing means may be provided, and means for aligning the respective moving rails 220 and the rack gears 230 may be required.

Fig. 7 shows an example of the structure of the means for fixing and releasing the movable frame 200. Fig.

The moving frame 200 according to the present invention requires alignment when the membrane carrier moves in the circumferential direction and the moving frame 200 is moved along the longitudinal transport means 300 when the membrane carrier reaches a desired height The liquefied gas storage tank must slide in the longitudinal direction.

That is, the moving frame 200 is fixed as an example for aligning the moving frame 200 for the circumferential movement of the membrane carrier.

For this purpose, the moving frame 200 of the present invention is constructed such that the horizontal roller 250 is brought into close contact with the longitudinal rails 340 of the longitudinal transporting means 300 so that the horizontal roller 250 is moved 340). ≪ / RTI >

That is, in the moving frame according to the present invention, when stopping, the horizontal roller 250 opposes the longitudinal rail 340 with respect to the longitudinal rail 340 for the reason that the horizontal roller 250 does not move on the longitudinal rail 340 Thereby maintaining the state of being further pressed on the longitudinal rails 340.

By operating the operation control means such as a lever (not shown) for moving, a wire (not shown) connected to the horizontal roller 250 is pulled from the lever so that the opposing horizontal roller 250 is moved in the longitudinal direction So that the distance between the opposing horizontal rollers 250 is set to a certain distance so that the horizontal roller 250 can be operated on the longitudinal rails 340.

To this end, the wire may be configured to pull each of the opposing horizontal rollers, and a pair of horizontal rollers, which are affixed to one side of the longitudinal rail 340 as shown in FIG. 7, And the wire can be connected to the roller fixed support 251. [

In this case, the roller deformable support 252 supporting the opposing horizontal rollers is elastically supported in a state of being bent by the hinge engagement, so that the horizontal rollers are pulled so that the horizontal rollers are moved a certain distance with respect to the longitudinal rails Lt; / RTI >

In order to transport the moving frame 200 in the longitudinal direction on each circumferential surface, the moving rail 220 and the rack gear 230 of each of the moving frames are coupled with the other moving rack 220 and the other rack gear 230 Should be released.

8, in the embodiment of the present invention, the rack gear 230 can be partially folded by the hinge, so that when the moving frame 200 is operated in the longitudinal direction, the rack gear 230 is folded So that they can be moved in the longitudinal direction without interference, and can be engaged at the coupling portion between the rack gears 230 when aligned.

Instead, each of the moving rails 220 can be moved longitudinally in a segmented state, and even if a slight distance is generated between the moving rails 200, there is no problem that the carrier roller 120 is moved thereon to be.

9, the end of each of the moving rails 220 is formed in a cone shape or the like so that the carrier roller of the membrane carrier moves from one moving rail 220-1 to the next moving rail 220-1, It may be a structure that permits the gap to be more natural in transiting to.

4, the circumferential surface of the liquefied gas storage tank is formed by continuous chambers due to a chamfer or the like, so that the membrane carrier can be more smoothly moved between the surface and the surface, The carrier roller support 121 and the pinion gear can be rotated with respect to the hinge shaft 122 so as to relatively rotate with the carrier frame 110 so that even when moving the peripheral edge surface as shown in FIG. The carrier roller 120 can be implemented to smoothly guide the carrier frame 110 in the circumferential direction.

As described above, the membrane panel transportation system according to the present invention has a configuration in which the membrane panel transportation system is carried by rollers and rails, so that when the liquefied gas storage tank is transported from the sea, it can be flexibly operated,

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be apparent to those skilled in the art that various modifications and changes may be made.

S: Liquefied gas storage tank
P: Membrane panel
S: Scaffolding
100: Membrane carrier
110: carrier frame
120: carrier roller
121: carrier roller support 122: hinge shaft
130: Pinion gear
200: Moving frame
210: main frame
220: Moving rail
230: Racks
240: Support frame
250: Horizontal roller
251: roller fixing supporter 252: roller deforming supporter
300: longitudinal direction conveying means
310: Horizontal plate
320: Rail guide
321: coupling rod 322: guide body
330: Guide fixing plate
340: longitudinal rail

Claims (15)

A moving rail provided in a circumferential direction of the liquefied gas storage tank so as to guide a carrier roller formed in the membrane carrier;
A rack gear provided in a circumferential direction of the liquefied gas storage tank so as to be engaged with a pinion gear formed on the membrane carrier; And
And a main frame on which the moving rail and the rack gear are supported,
The membrane carrier holding the membrane panel to be installed on the inner wall of the liquefied gas storage tank is guided so as to be moved along the circumferential direction of the liquefied gas storage tank,
Characterized in that the rack gear is folded at one portion by a hinge engagement so that the main frame slides in the longitudinal direction with a portion of the rack gear folded.
Moving frame of membrane panel conveying system. A membrane carrier on which the membrane panel is mounted;
A moving frame for carrying the membrane carrier in a circumferential direction of the liquefied gas storage tank; And
And longitudinal direction control means for restricting longitudinal movement of the moving frame when the moving frame is carried along the circumferential direction of the liquefied gas storage tank,
Wherein the moving frame includes a moving rail provided along a circumferential direction of the liquefied gas storage tank,
Wherein the longitudinal direction control means comprises:
A pair of roller fixed supports for connecting between a pair of horizontal rollers neighboring in the longitudinal direction from above and below the longitudinal rails, respectively; And
And a pair of roller deformable supports each for supporting between the horizontal rollers vertically opposed to each other with the longitudinal rails therebetween,
Wherein a carrier roller formed on the membrane carrier is guided along the moving rail such that the membrane carrier is carried in a liquefied gas storage tank in a circumferential direction,
A horizontal roller provided on the moving frame is guided along a longitudinal rail provided on a circumferential surface of the liquefied gas storage tank so that the moving frame is transported in a longitudinal direction in the liquefied gas storage tank,
Wherein the horizontal rollers are provided in pairs on upper and lower sides of the moving frame, and the opposing horizontal rollers are guided by being engaged with the longitudinal rails,
Wherein when the moving frame is carried along the circumferential direction of the liquefied gas storage tank, the horizontal roller is fixed to the longitudinal rail so as to prevent the moving frame from moving in the longitudinal direction by frictional force,
The roller deformable support has a structure in which two supports are hinged at the center,
And the pair of roller deformable supports are elastically connected to each other so as to elastically support between the vertically opposed horizontal rollers.
Moving frame of membrane panel conveying system. The method according to claim 1,
Wherein the main frame is provided separately for each circumferential surface of the liquefied gas storage tank and is independently slidable in the longitudinal direction.
Moving frame of membrane panel conveying system. The method of claim 3,
Wherein the main frame is constituted by a rectangular frame and a supporting frame for supporting the moving rail and the rack gear is formed on both sides thereof.
Moving frame of membrane panel conveying system. The method of claim 4,
Wherein the moving rail and the rack gear are coupled to a side surface of the main frame.
Moving frame of membrane panel conveying system. The method of claim 5,
Characterized in that the moving rail has a round cross-section and the end has a narrowed cross-section.
Moving frame of membrane panel conveying system. The method of claim 5,
Characterized in that the moving rail and the rack gear are spaced apart so that they do not interfere with each other due to the carrier roller and the pinion gear engaged therewith.
Moving frame of membrane panel conveying system. The method according to claim 1,
A horizontal roller is mounted on the moving frame,
Characterized in that the horizontal roller is guided by a longitudinal rail provided on the circumferential surface of the liquefied gas storage tank so that it can slide in the longitudinal direction of the liquefied gas storage tank.
Moving frame of membrane panel conveying system. The method of claim 8,
Wherein the horizontal rollers are provided on upper and lower sides of the main frame, respectively.
Moving frame of membrane panel conveying system. delete The method of claim 2,
Wherein the longitudinal direction control means comprises:
Wherein the horizontal roller is not rotated for the circumferential conveyance of the membrane carrier and the horizontal roller is rotated for the longitudinal direction of the moving frame.
Moving frame of membrane panel conveying system. The method of claim 11,
Characterized in that said longitudinal direction control means controls said longitudinal motion by controlling the friction of said longitudinal rollers and said horizontal rollers provided on the circumferential surface of the liquefied gas storage tank,
Moving frame of membrane panel conveying system. The method of claim 12,
The horizontal rollers are paired and mated opposite to the longitudinal rails,
Characterized in that said longitudinal direction control means causes said horizontal roller to be moved in a direction away from the center of said longitudinal rail so that said horizontal roller is slidable on said longitudinal rail,
Moving frame of membrane panel conveying system. delete A moving rail provided in a circumferential direction of the liquefied gas storage tank so as to guide a carrier roller formed in the membrane carrier;
A rack gear provided in a circumferential direction of the liquefied gas storage tank so as to be engaged with a pinion gear formed on the membrane carrier;
A main frame supporting the moving rail and the rack gear;
A horizontal roller guided by a longitudinal rail provided on a circumferential surface of the liquefied gas storage tank; And
And longitudinal control means for controlling that the main frame is operated in the longitudinal direction of the liquefied gas storage tank,
Characterized in that the rack gear is folded at one portion by a hinge engagement so that the main frame slides in the longitudinal direction with a portion of the rack gear folded.
Moving frame of membrane panel conveying system.
KR1020150161561A 2015-11-18 2015-11-18 A moving frame of a membrane panel carrying system KR101771993B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150161561A KR101771993B1 (en) 2015-11-18 2015-11-18 A moving frame of a membrane panel carrying system

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