Thin film type LNG storage tank insulation board gap filling structure

Abstract

The invention discloses a thin film type LNG storage tank heat preservation plate gap filling structure, and belongs to the field of LNG storage tanks. The structure comprises a tank body, a filling structure, a supporting unit, a bottom plate and a positioning unit, the filling structure is located in the tank body. According to the gap filling structure for the insulation board of the film type LNG storage tank, the first glass wool board and the second glass wool board are arranged in the cloth bag body from the opening after being attached, then the opening is sealed through the sealing adhesive tape, in this way, sealing of glass wool cloth is completed, the first glass wool board is made of glass wool felt with the density being 35 KG / m < 3 >, and the second glass wool board is made of glass wool felt with the density being 35 KG / m < 3 >; the second glass wool board adopts glass wool felt with the density of 22 KG / m < 3 >, the glass wool cloth, the first glass wool board, the second glass wool board, the vertical adhesive tape, the transverse adhesive tape and other components jointly form a filling structure, and the filling structure is low in heat conductivity coefficient, high in strength, convenient to install and good in rebound resilience so that gap filling can be tighter, and heat conduction can be reduced.

Description

Technical Field

[0001] The invention relates to the field of LNG storage tanks, and in particular to a film-type LNG storage tank insulation board gap filling structure. Background Art

[0002] The membrane storage tank uses a stainless steel plate with a thickness of about 1-2 mm, and an expansion joint is pressed out, which is anchored with a cold-insulating polyurethane module, and the polyurethane is bonded to the concrete outer tank. In this way, the inner and outer tanks are integrated, with better seismic performance. In addition, the inner tank film shrinks and expands in situ, changing with temperature like a flat spring, which can meet the needs of rapid reheating and rapid precooling of LNG storage tanks.

[0003] Insulation boards are installed between the inner tank and the outer tank in the LNG storage tank. After the insulation boards are filled between the inner tank and the outer tank, the gaps between the insulation boards need to be filled. Currently, the materials used to fill the gaps between the insulation boards and the tank body are usually: a single glass wool felt product wrapped with kraft paper material on the outside. Such gap-filling materials are difficult to assemble during construction, and it is not easy to feed kraft paper and glass felt into the gap between the insulation board and the tank body, and the cold-keeping performance is not ideal. Therefore, the present application proposes a thin-film LNG storage tank insulation board gap-filling structure. Summary of the invention

[0004] The invention provides a film-type LNG storage tank insulation board gap filling structure, which can solve the problems existing in the prior art.

[0005] A film-type LNG storage tank insulation board gap filling structure, comprising a tank body, a filling structure, a supporting unit, a bottom plate, and a positioning unit;

[0006] The filling structure is located inside the tank body, and the filling structure includes a first glass wool board, a second glass wool board, a glass cloth, a vertical adhesive tape, and a horizontal adhesive tape, and the first glass wool board is bonded to the second glass wool board;

[0007] The first glass wool board and the second glass wool board are received in the glass wool cloth, and the vertical adhesive tape and the horizontal adhesive tape are respectively vertically and horizontally wound around the outside of the glass wool cloth;

[0008] The support unit is used to support the filling structure;

[0009] At least two positioning units are provided, and the positioning units are used to clamp and release the filling structure.

[0010] According to a further technical solution, a plurality of grooves are arranged on the first glass wool board, and a plurality of protrusions are arranged in the second glass wool board, and the protrusions cooperate with the grooves.

[0011] According to a further technical solution, at least two groups of vertical tapes are wound around the outside of the glass fiber cloth, wherein the two groups of vertical tapes are respectively arranged at the left and right ends of the glass fiber cloth.

[0012] According to a further technical solution, at least two groups of transverse tapes are wrapped around the outside of the glass fiber cloth, wherein the two groups of transverse tapes are respectively arranged at the upper and lower ends of the glass fiber cloth.

[0013] According to a further technical solution, the glass fiber cloth comprises a bag body, one end of the bag body is provided with an opening, and a sealing tape is pasted on the opening.

[0014] A further technical solution is that the support unit includes a top plate, a lifting unit, a vertical pipe, and a guide frame. The support unit is arranged on the bottom plate, the top plate is connected to the output end of the lifting unit, the lifting unit is arranged on the bottom plate, the top plate is connected to the vertical pipe, a guide hole is arranged in the guide frame, and the vertical pipe is slidably connected to the guide hole.

[0015] According to a further technical solution, the positioning unit includes a positioning bracket, a positioning plate, a guide plate, a first support plate, a second support plate, a mounting seat, a movable plate, a telescopic rod, and a cross plate. The positioning bracket is connected to a movable device, and the movable device is used to adjust the distance between the positioning bracket and the filling structure.

[0016] According to a further technical solution, the moving device includes a slider, a guide rail, and a power device. The guide rail is movably connected to the slider. Two groups of guide rails and sliders are provided, and the two groups of guide rails and sliders are distributed in parallel.

[0017] A further technical solution is that two positioning plates are provided, and the two positioning plates are respectively located on the upper and lower sides of the filling structure, vertically distributed guide plates are inserted into the two positioning plates, and the positioning plates are movably connected to the guide plates, one of the positioning plates is movably connected to the first support plate, and the other positioning plate is movably connected to the second support plate, and the other ends of the first support plate and the second support plate are movably connected to the mounting seat.

[0018] A further technical solution is that the mounting seat is arranged on a movable plate, the movable plate is received in the positioning bracket, and the movable plate is slidably connected to the positioning bracket, the movable plate is connected to the output end of the telescopic rod, and two cross plates are respectively installed at both ends of the movable plate, and the cross plates are slidably connected to the positioning bracket.

[0019] Beneficial effects:

[0020] The present invention provides a film-type LNG storage tank insulation board gap filling structure. After the first glass wool board and the second glass wool board are attached, they are loaded into the bag body from the opening, and then the opening is sealed with a sealing tape, so that the sealing of the glass wool cloth is completed. The first glass wool board adopts 35KG / m 3 Density glass wool felt, the second glass wool board uses 22KG / m3 High-density glass wool felt, glass cloth, first glass wool board, second glass wool board, vertical tape, horizontal tape and other components together constitute the filling structure. The filling structure has low thermal conductivity, high strength, easy installation, and good resilience, which can make the gap filling more tightly to reduce heat conduction.

[0021] The present invention provides a film-type LNG storage tank insulation board gap filling structure, the internal telescopic rod can push the movable plate to move, and then push the mounting seat to move, the mounting seat can push the positioning plate to move along the vertically distributed guide plate through the first support plate and the second support plate, so that the two positioning plates can approach each other or move away from each other, and the positioning plates can approach each other to clamp the filling structure in the middle, fix the position between the glass fiber cloth and the first glass wool board and the second glass wool board, at this time, when the tape is wound, the glass fiber cloth is not easy to move, the winding of the tape is more convenient, and the winding work of the horizontal tape and the vertical tape can be accelerated, thereby accelerating the forming speed of the filling structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of the gap filling structure of the insulation board of the film-type LNG storage tank provided by the present invention;

[0023] Figure 2 A schematic diagram of the internal structure of the gap filling structure of the membrane-type LNG storage tank insulation board provided by the present invention.

[0024] Figure 3 It is a structural schematic diagram of the filling structure in the present invention.

[0025] Figure 4 This is one of the structural schematic diagrams of the filling structure and the positioning unit in the present invention.

[0026] Figure 5 This is the second structural schematic diagram of the filling structure and the positioning unit in the present invention.

[0027] Figure 6 This is the third structural schematic diagram of the filling structure and positioning unit in the present invention.

[0028] Figure 7 This is the fourth structural schematic diagram of the filling structure and the positioning unit in the present invention.

[0029] Description of reference numerals:

[0030] 1. tank body; 2. filling structure; 201. first glass wool board; 2011. groove; 202. second glass wool board; 2021. bump; 203. glass wool cloth; 2031. bag body; 2032. opening; 204. vertical tape; 205. horizontal tape; 206. sealing tape;

[0031] 3. Support unit; 301. Top plate; 302. Lifting unit; 303. Vertical pipe; 304. Guide frame; 4. Bottom plate;

[0032] 5. Positioning unit; 501. Positioning bracket; 502. Positioning plate; 503. Guide plate; 504. First support plate; 505. Second support plate; 506. Mounting seat; 507. Moving plate; 508. Telescopic rod; 509. Horizontal plate; 6. Insulation plate. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0034] like Figures 1 to 7 As shown, A film-type LNG storage tank insulation board gap filling structure provided in an embodiment of the present invention comprises a tank body 1, a filling structure 2, a support unit 3, a bottom plate 4, a positioning unit 5, and an insulation board 6;

[0035] The filling structure 2 is located between the tank body 1 and the insulation board 6; LNG (liquefied natural gas) storage tanks are containers specifically used to store LNG at low temperatures, usually about -162°C (-260°F) to keep it in liquid form. These tanks are a key component of the LNG supply chain, enabling efficient storage and transportation of natural gas in a compact form. Studies have shown that the global LNG storage tank market size will reach approximately US$5.71 billion in 2023. Driven by the growing demand for liquefied natural gas as a cleaner and more efficient energy source, the market is expected to grow at an annual rate of 4.6% between 2024 and 2032, reaching nearly US$8.57 billion by 2032;

[0036] The film storage tank uses a stainless steel plate with a thickness of about 1-2 mm, and an expansion joint is pressed out, which is anchored with the cold insulation polyurethane module, and the polyurethane is bonded to the concrete outer tank. In this way, the inner and outer tanks are integrated, and the seismic performance is better. In addition, the film of the inner tank shrinks and expands in situ, and changes with temperature like a flat spring, which can meet the needs of rapid reheating and rapid precooling of LNG storage tanks. The tank body 1 can be either the inner tank or the outer tank, and the filling structure 2 is used to fill the gap between the insulation board 6 and the tank body 1 to prevent heat loss.

[0037] Please refer to Figure 2 , Figure 3The filling structure 2 includes a first glass wool board 201, a second glass wool board 202, a glass fiber cloth 203, a vertical tape 204, and a horizontal tape 205. The first glass wool board 201 is bonded to the second glass wool board 202. In order to make the first glass wool board 201 and the second glass wool board 202 connected more tightly, a plurality of grooves 2011 are provided on the first glass wool board 201, and a plurality of protrusions 2021 are provided in the second glass wool board 202, and the protrusions 2021 cooperate with the grooves 2011.

[0038] Specifically, the first glass wool board 201 and the second glass wool board 202 are received into the glass fiber cloth 203, and at least two groups of vertical tapes 204 are wrapped around the outside of the glass fiber cloth 203, wherein the two groups of vertical tapes 204 are respectively arranged at the left and right ends of the glass fiber cloth 203, and at least two groups of horizontal tapes 205 are wrapped around the outside of the glass fiber cloth 203, wherein the two groups of horizontal tapes 205 are respectively arranged at the upper and lower ends of the glass fiber cloth 203. It can be summarized as the vertical tapes 204 and the horizontal tapes 205 are respectively wrapped around the outside of the glass fiber cloth 203 vertically and horizontally.

[0039] More specifically, the glass cloth 203 includes a bag body 2031, one end of which is provided with an opening 2032, and a sealing tape 206 is attached to the opening 2032. After the first glass wool board 201 and the second glass wool board 202 are attached, they are loaded into the bag body 2031 from the opening 2032, and then the opening 2032 is sealed by the sealing tape 206, thus completing the sealing of the glass cloth 203. The first glass wool board 201 is made of 35KG / m 3 Density glass wool felt, the second glass wool board 202 uses 22KG / m 3 High-density glass wool felt, glass cloth 203, first glass wool board 201, second glass wool board 202, vertical tape 204, horizontal tape 205 and other components together constitute a filling structure 2. The filling structure 2 has a low thermal conductivity, high strength, and is easy to install. It has good resilience and can fill the gaps more tightly to reduce heat conduction.

[0040] Please refer to Figure 4-Figure 7 The supporting unit 3 is used to support the filling structure 2, specifically, to support the structure formed after the first glass wool board 201 and the second glass wool board 202 are put into the glass fiber cloth 203, and then to wrap the vertical tape 204 and the horizontal tape 205.

[0041] Specifically, the support unit 3 includes a top plate 301, a lifting unit 302, a vertical pipe 303, and a guide frame 304. The support unit 3 is arranged on the bottom plate 4. The top plate 301 is connected to the output end of the lifting unit 302. The lifting unit 302 is arranged on the bottom plate 4. The top plate 301 is connected to the vertical pipe 303. A guide hole is arranged in the guide frame 304, and the vertical pipe 303 is slidably connected to the guide hole.

[0042] More specifically, at least two positioning units 5 are provided, and the positioning units 5 are used to clamp and release the filling structure 2. After the filling structure 2 is clamped, the tape is pasted. In this way, it can be ensured that the filling structure 2 remains stable when the tape is pasted. After the tape is pasted, the filling structure 2 is released through the positioning units 5.

[0043] Reference Figure 4 , Figure 5 The positioning unit 5 includes a positioning bracket 501, a positioning plate 502, a guide plate 503, a first support plate 504, a second support plate 505, a mounting seat 506, a moving plate 507, a telescopic rod 508, and a horizontal plate 509;

[0044] Specifically, the positioning bracket 501 is connected to a moving device, and the moving device is used to adjust the distance between the positioning bracket 501 and the filling structure 2, specifically to send the positioning bracket 501 to the position of the filling structure 2 or move it away from the position of the filling structure 2.

[0045] It should be noted that the moving device includes a slider, a guide rail, and a power device. The guide rail is movably connected to the slider. There are two groups of guide rails and sliders, and the two groups of guide rails and sliders are distributed in parallel. The power device is used to drive the positioning bracket 501 to move.

[0046] More specifically, two positioning plates 502 are provided, and the two positioning plates 502 are respectively located on the upper and lower sides of the filling structure 2, and vertically distributed guide plates 503 are inserted into the two positioning plates 502. The positioning plates 502 are movably connected to the guide plates 503, one of the positioning plates 502 is movably connected to the first support plate 504, and the other positioning plate 502 is movably connected to the second support plate 505. The other ends of the first support plate 504 and the second support plate 505 are movably connected to the mounting seat 506, and the mounting seat 506 is set on the movable plate 507. The movable plate 507 is received into the positioning bracket 501, and the movable plate 507 is slidably connected to the positioning bracket 501. The movable plate 507 is connected to the output end of the telescopic rod 508, and two cross plates 509 are respectively installed at both ends of the movable plate 507, and the cross plate 509 is slidably connected to the positioning bracket 501.

[0047] The telescopic rod 508 can push the movable plate 507 to move, and then push the mounting seat 506 to move. The mounting seat 506 can push the positioning plate 502 to move along the vertically distributed guide plate 503 through the first support plate 504 and the second support plate 505, so that the two positioning plates 502 can approach each other or move away from each other. The positioning plates 502 are close to each other and can clamp the filling structure 2 in the middle, fix the position between the glass fiber cloth 203 and the first glass wool board 201 and the second glass wool board 202. At this time, when the tape is wrapped, the glass fiber cloth 203 is not easy to move, and the winding of the tape is more convenient, which can speed up the winding work of the horizontal tape 205 and the vertical tape 204, and speed up the forming speed of the filling structure 2.

[0048] In summary, in the embodiment of the present invention, a film-type LNG tank insulation board gap filling structure is provided. After the first glass wool board 201 and the second glass wool board 202 are attached, they are loaded into the bag body 2031 from the opening 2032, and then the opening 2032 is sealed by the sealing tape 206, so that the sealing of the glass wool cloth 203 is completed. The first glass wool board 201 adopts 35KG / m 3 Density glass wool felt, the second glass wool board 202 uses 22KG / m 3 High-density glass wool felt, glass cloth 203, first glass wool board 201, second glass wool board 202, vertical tape 204, horizontal tape 205 and other components together constitute a filling structure 2. The filling structure 2 has a low thermal conductivity, high strength, and is easy to install. It has good resilience and can fill the gaps more tightly to reduce heat conduction.

[0049] The telescopic rod 508 can push the movable plate 507 to move, and then push the mounting seat 506 to move. The mounting seat 506 can push the positioning plate 502 to move along the vertically distributed guide plate 503 through the first support plate 504 and the second support plate 505, so that the two positioning plates 502 can approach each other or move away from each other. The positioning plates 502 are close to each other and can clamp the filling structure 2 in the middle, fix the position between the glass fiber cloth 203 and the first glass wool board 201 and the second glass wool board 202. At this time, when the tape is wrapped, the glass fiber cloth 203 is not easy to move, and the winding of the tape is more convenient, which can speed up the winding work of the horizontal tape 205 and the vertical tape 204, and speed up the forming speed of the filling structure 2.

[0050] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A film-type LNG storage tank insulation board gap filling structure, characterized in that: It comprises a tank body (1), a filling structure (2), a support unit (3), a bottom plate (4), a positioning unit (5), and a heat insulation plate (6); The filling structure (2) is located between the tank body (1) and the insulation board (6), and the filling structure (2) comprises a first glass wool board (201), a second glass wool board (202), a glass cloth (203), a vertical adhesive tape (204), and a horizontal adhesive tape (205), and the first glass wool board (201) and the second glass wool board (202) are bonded together; The first glass wool board (201) and the second glass wool board (202) are stored in the glass wool cloth (203), and the vertical adhesive tape (204) and the horizontal adhesive tape (205) are respectively vertically and horizontally wound around the outside of the glass wool cloth (203); The support unit (3) is used to support the filling structure (2); At least two positioning units (5) are provided, and the positioning units (5) are used to clamp and release the filling structure (2).

2. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 1, characterized in that: The first glass wool board (201) is provided with a plurality of grooves (2011), and the second glass wool board (202) is provided with a plurality of protrusions (2021), and the protrusions (2021) cooperate with the grooves (2011).

3. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 1, characterized in that: At least two groups of vertical adhesive tapes (204) are wound around the outside of the glass fiber cloth (203), wherein the two groups of vertical adhesive tapes (204) are respectively arranged at the left and right ends of the glass fiber cloth (203).

4. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 3, characterized in that: At least two groups of transverse adhesive tapes (205) are wound around the glass fiber cloth (203), wherein the two groups of transverse adhesive tapes (205) are respectively arranged at the upper and lower ends of the glass fiber cloth (203).

5. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 4, characterized in that: The glass fiber cloth (203) comprises a cloth bag body (2031), one end of the cloth bag body (2031) is provided with an opening (2032), and a sealing tape (206) is attached to the opening (2032).

6. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 1, characterized in that: The support unit (3) comprises a top plate (301), a lifting unit (302), a vertical pipe (303), and a guide frame (304); the support unit (3) is arranged on the bottom plate (4); the top plate (301) is connected to an output end of the lifting unit (302); the lifting unit (302) is arranged on the bottom plate (4); the top plate (301) is connected to the vertical pipe (303); a guide hole is arranged in the guide frame (304); and the vertical pipe (303) is slidably connected to the guide hole.

7. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 1, characterized in that: The positioning unit (5) comprises a positioning bracket (501), a positioning plate (502), a guide plate (503), a first support plate (504), a second support plate (505), a mounting seat (506), a movable plate (507), a telescopic rod (508), and a transverse plate (509); the positioning bracket (501) is connected to a moving device, and the moving device is used to adjust the distance between the positioning bracket (501) and the filling structure (2).

8. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 7, characterized in that: The moving device comprises a slider, a guide rail and a power device. The guide rail is movably connected to the slider. Two groups of the guide rail and the slider are provided, and the two groups of the guide rail and the slider are distributed in parallel.

9. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 8, characterized in that: Two positioning plates (502) are provided, and the two positioning plates (502) are respectively located on the upper and lower sides of the filling structure (2), and vertically distributed guide plates (503) are inserted into the two positioning plates (502). The positioning plates (502) and the guide plates (503) are movably connected, one of the positioning plates (502) is movably connected to the first support plate (504), and the other positioning plate (502) is movably connected to the second support plate (505), and the other ends of the first support plate (504) and the second support plate (505) are movably connected to the mounting seat (506).

10. A film-type LNG storage tank insulation board gap filling structure as claimed in claim 9, characterized in that: The mounting seat (506) is arranged on the movable plate (507), the movable plate (507) is received in the positioning bracket (501), and the movable plate (507) is slidably connected to the positioning bracket (501), the movable plate (507) is connected to the output end of the telescopic rod (508), and two transverse plates (509) are respectively installed at both ends of the movable plate (507), and the transverse plates (509) are slidably connected to the positioning bracket (501).

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