A supporting device for a vertical low-temperature storage tank

Abstract

The present invention provides a support device for a vertical cryogenic storage tank, comprising: an outer cylinder, a top support frame and an inner cylinder. An inner cylinder is arranged inside the outer cylinder, and a top support frame is fixed to the top of the inner cylinder. One side of the top support frame away from the inner cylinder is fixedly connected to the inner wall of the top of the outer cylinder. Side fixing mechanisms for connecting the top of the inner cylinder and the outer cylinder are symmetrically arranged on both sides of the top of the inner cylinder. For such a support device of a vertical cryogenic storage tank, under the combined action of the side fixing mechanism and the base fixing mechanism, stable connection and fixation of the inner cylinder and the outer cylinder are achieved. Under the action of the suspension mechanism, the side effects caused by the thermal expansion and contraction of the inner cylinder are reduced, and a certain buffering effect is achieved. Under the action of the anti-sinking mechanism, there is a certain supporting effect on the inner cylinder to prevent it from sinking and damaging the fixing mechanism. Compared with the existing devices, the force is evenly distributed, the heat conduction is effectively reduced, the thermal expansion and contraction of the inner tank are solved, and energy is saved and consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical cryogenic storage tanks, and particularly to a support device for a vertical cryogenic storage tank. Background Art

[0002] For cryogenic liquid storage tanks and the structures and types of cryogenic liquid storage tanks, in recent years, the cryogenic liquid market has been booming. The sales of liquid oxygen, liquid argon, liquid nitrogen, liquid carbon dioxide, and LNG natural gas have increased significantly. Therefore, the profit from the by-products of oxygen generators is quite considerable, becoming an important part of the non-steel product income of steel enterprises. The production, storage, and transportation of cryogenic liquids are inseparable from adiabatic storage tanks. A large number of them are installed and used. Adiabatic storage tanks are divided into vacuum powder adiabatic type and normal pressure powder adiabatic type. Powder adiabatic uses low-thermal-conductivity powders, fibers, or foam materials to reduce heat transfer.

[0003] For existing vertical cryogenic double-tank storage tanks, generally, the inner tank is suspended in the outer tank by slings or fixed in a coordinated manner by a combination of side supports and bottom supports. However, the following problems exist in the actual use of such a support structure: the slings are easily unevenly stressed, and the slings cannot well meet the requirements of the thermal expansion and contraction of the inner tank. It is difficult to ensure the telescopic lengths of the slings during the manufacturing process, which easily causes uneven stress on the slings. Therefore, it is necessary to provide a new support device for a vertical cryogenic storage tank to solve the above technical problems. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a support device for a vertical cryogenic storage tank that stably fixes the inner cylinder and has a certain buffering effect on its thermal expansion and contraction effect.

[0005] The support device for a vertical cryogenic storage tank provided by the present invention includes: an outer cylinder, a top support frame, and an inner cylinder. The inner cylinder is arranged inside the outer cylinder, and a top support frame is fixed to the top of the inner cylinder. The side of the top support frame away from the inner cylinder is fixedly connected to the inner wall of the top of the outer cylinder. Symmetrically arranged on both sides of the top of the inner cylinder are side fixing mechanisms connecting the inner cylinder and the top of the outer cylinder. Symmetrically arranged on the surface of the inner cylinder at the bottom of the side fixing mechanisms are suspension fixing mechanisms that can relieve the deformation caused by the thermal expansion and contraction of the inner cylinder. Symmetrically arranged at the lower ends of the suspension fixing mechanisms on both sides of the bottom of the inner cylinder are base fixing mechanisms that can connect and fix the inner cylinder and the bottom of the outer cylinder. The inner wall of the bottom of the outer cylinder is provided with an anti-sinking mechanism that can buffer the descent of the inner cylinder.

[0006] Preferably, the suspension fixing mechanism includes a reinforcing ring, a fixing plate, a first spring and a connecting rod. The two ends of the reinforcing ring are respectively fixedly connected to the inner walls of the inner cylinder and the outer cylinder. The fixing plate is fixed to the inner wall of the outer cylinder at the bottom of the reinforcing ring. One side of the fixing plate away from the outer cylinder is rotatably connected to the connecting rod through a rotating shaft. One end of the connecting rod away from the fixing plate is rotatably connected to the outer wall of the inner cylinder through a rotating shaft. One end of the first spring is fixed to the bottom of the reinforcing ring, and the other end of the first spring is fixedly connected to the connecting rod.

[0007] Preferably, the side fixing mechanism includes a cover plate and a fixing pipe. The two ends of the fixing pipe are respectively fixedly connected to the inner walls of the inner cylinder and the outer cylinder. The cover plates are symmetrically fixed to the inner walls of the inner cylinder and the outer cylinder on both sides of the fixing pipe.

[0008] Preferably, the base fixing mechanism includes a first ear plate, a second ear plate, a connecting block, a fixing block and a cold insulation pad. The fixing blocks are symmetrically fixed to both sides of the bottom of the inner cylinder. The connecting block is slidably connected inside the fixing block. One end of the connecting block away from the fixing block is fixed with the first ear plate. The second ear plate is fixed to the bottom of the first ear plate and is fixedly connected to the inner wall of the outer cylinder. A cold insulation pad is fixed at the connection between the first ear plate and the second ear plate. Sliders are symmetrically fixed to both sides of the connecting block, and chutes are provided in the fixing block corresponding to the moving paths of the sliders. The sliders are slidably connected to the chutes.

[0009] Preferably, the anti-settlement mechanism includes a support plate, a telescopic rod, a connecting plate and a second spring. The support plate is in sliding contact with the bottom of the inner cylinder. The telescopic rods are symmetrically fixed to the bottom of the support plate. The bottom of the telescopic rod is fixedly connected to the inner wall of the outer cylinder. The connecting plates are symmetrically fixed to the inner wall of the outer cylinder corresponding to the position of the support plate. One end of the second spring is fixed to the bottom of the connecting plate, and the other end of the second spring is fixedly connected to the support plate.

[0010] Preferably, an aluminum foil heat insulation paper is fixed on the surface of the top support frame.

[0011] Compared with the related art, the support device of the vertical low-temperature storage tank provided by the present invention has the following beneficial effects:

[0012] The present invention provides a support device for a vertical low-temperature storage tank: when the inner cylinder wall deforms due to thermal expansion and contraction, the connecting rod will move along with the inner cylinder under the action of the rotating shaft. At the same time, the first spring restrains the rotation of the connecting rod, thereby realizing a buffering effect on the deformation of the inner cylinder. The fixed pipe cooperates with the top support frame to make the connection between the top of the inner cylinder and the outer cylinder body more stable. When the distance between the inner cylinder and the inner wall of the outer cylinder body changes due to deformation, it moves under the action of the slider and the chute, so that the first ear plate and the second ear plate can still be stably fixed to support the inner cylinder. When the inside of the inner cylinder is overweight, there will be a downward acting force under the action of gravity. To prevent the fixing mechanism from being damaged, when the inner cylinder descends, the support plate, under the action of the second spring, plays a certain inhibitory role in the descent of the inner cylinder. Such a support device for a vertical low-temperature storage tank, under the combined action of the side fixing mechanism and the base fixing mechanism, realizes the stable connection and fixation of the inner cylinder and the outer cylinder body. Under the action of the suspension mechanism, the side effects caused by the thermal expansion and contraction of the inner cylinder are reduced, and a certain buffering is achieved. Under the action of the anti-sinking mechanism, there is a certain supporting effect on the inner cylinder to prevent it from sinking and damaging the fixing mechanism. Compared with the existing devices, the force is evenly distributed, the heat conduction is effectively reduced, the thermal expansion and contraction of the inner tank are solved, and energy is saved and consumption is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure provided by the present invention;

[0014] Figure 2 is a schematic diagram of the structure of the side fixing mechanism provided by the present invention;

[0015] Figure 3 is a schematic diagram of the structure of the suspension fixing mechanism provided by the present invention;

[0016] Figure 4 is a schematic diagram of the structure of the anti-sinking mechanism provided by the present invention;

[0017] Figure 5 is a schematic diagram of the connection between the outer cylinder body and the inner cylinder provided by the present invention;

[0018] Figure 6 is a schematic diagram of the structure of the base fixing mechanism provided by the present invention;

[0019] Figure 7 is the connection between the top of the outer cylinder body and the inner cylinder provided by the present invention.

[0020] Reference numerals in the figures: 1, outer cylinder; 11, top support frame; 111, aluminum foil heat insulation paper; 2, inner cylinder; 3, suspension fixing mechanism; 31, reinforcing ring; 32, fixing plate; 33, first spring; 34, connecting rod; 4, base fixing mechanism; 41, first ear plate; 42, second ear plate; 43, connecting block; 431, slider; 44, fixing block; 441, chute; 45, cold insulation pad; 5, anti-sinking mechanism; 51, support plate; 52, telescopic rod; 53, connecting plate; 54, second spring; 6, side fixing mechanism; 61, cover plate; 62, fixing pipe. Detailed implementation mode

[0021] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , wherein, Figure 1 is the overall structure schematic diagram provided by the present invention; Figure 2 is the side fixing mechanism structure schematic diagram provided by the present invention; Figure 3 is the suspension fixing mechanism structure schematic diagram provided by the present invention; Figure 4 is the anti-sinking mechanism structure schematic diagram provided by the present invention; Figure 5 is the connection schematic diagram of the outer cylinder and the inner cylinder provided by the present invention; Figure 6 is the base fixing mechanism 4 structure schematic diagram provided by the present invention; Figure 7 is the connection at the top of the outer cylinder and the inner cylinder provided by the present invention. The support device of the vertical low-temperature storage tank includes: an outer cylinder 1, a top support frame 11 and an inner cylinder 2.

[0023] In the specific implementation process, as Figure 1 and Figure 5 shown, the inner cylinder 2 is arranged inside the outer cylinder 1, and the top support frame 11 is fixed to the top of the inner cylinder 2, and the side of the top support frame 11 away from the inner cylinder 2 is fixedly connected to the inner wall of the top of the outer cylinder 1.

[0024] The vacuum powder storage tank has a double-layer cylindrical structure. The inner cylinder 2 and its piping are made of austenitic stainless steel, and the outer shell is made of carbon steel. The interlayer is filled with expanded perlite (also known as pearlite sand), and at the same time, a specially treated adsorbent is provided and evacuated to a high vacuum degree (0.5 - 6 Pa). The capacity is below 200 m3, and the working pressure is relatively high (the working pressure of the two storage tanks for bottom blowing argon in the ladle of the fourth workshop is 2.0 Mpa). There is a vaporizer outside the tank, which can not only increase the pressure inside the tank for easy filling of the vehicle but also directly send out pressurized gas. According to its use, it can be divided into two types: fixed type and transport type. The fixed type is mainly used for the storage of cryogenic liquids, and it is installed at the production site, use point, or supply station of cryogenic liquids; the transport type transports cryogenic liquids from the production site or supply station to the use point, and there are often forms such as land transportation and water transportation, which are respectively called tank trucks, trailers, and tank ships.

[0025] Reference Figure 1 As shown in the reference, on both sides of the top of the inner cylinder 2, there are symmetrically arranged side fixing mechanisms 6 connecting the top of the inner cylinder 2 and the outer cylinder body 1. On the surface of the inner cylinder 2, symmetrically arranged at the bottom of the side fixing mechanism 6 are suspension fixing mechanisms 3 that can relieve the deformation caused by the thermal expansion and contraction of the inner cylinder 2. On both sides of the bottom of the inner cylinder 2, symmetrically arranged at the lower end of the suspension fixing mechanism 3 are base fixing mechanisms 4 that can connect and fix the bottom of the inner cylinder 2 and the outer cylinder body 1. On the inner wall of the bottom of the outer cylinder body 1, there is an anti-sinking mechanism 5 that can buffer the descent of the inner cylinder 2. Under the combined action of the side fixing mechanism 6 and the base fixing mechanism 4, the stable connection and fixation of the inner cylinder 2 and the outer cylinder body 1 are realized. Under the action of the suspension mechanism, the side effects caused by the thermal expansion and contraction of the inner cylinder 2 are reduced, and a certain buffering effect is achieved. Under the action of the anti-sinking mechanism 5, there is a certain supporting effect on the inner cylinder 2 to prevent it from sinking and damaging the fixing mechanism.

[0026] Reference Figure 3 As shown in the reference, the suspension fixing mechanism 3 includes a reinforcing ring 31, a fixing plate 32, a first spring 33, and a connecting rod 34. Both ends of the reinforcing ring 31 are fixedly connected to the inner walls of the inner cylinder 2 and the outer cylinder body 1 respectively. On the inner wall of the outer cylinder body 1, at the bottom of the reinforcing ring 31, a fixing plate 32 is fixed. And on the side of the fixing plate 32 away from the outer cylinder body 1, a connecting rod 34 is rotatably connected through a rotating shaft. The end of the connecting rod 34 away from the fixing plate 32 is rotatably connected to the outer wall of the inner cylinder 2 through a rotating shaft. One end of the first spring 33 is fixed to the bottom of the reinforcing ring 31, and the other end of the first spring 33 is fixed to the connecting rod 34. When the wall of the inner cylinder 2 deforms due to thermal expansion and contraction, the connecting rod 34 will move along with the inner cylinder 2 under the action of the rotating shaft. At the same time, the first spring 33 restrains the rotation of the connecting rod 34, thereby realizing a buffering effect on the deformation of the inner cylinder 2.

[0027] Reference Figure 2As shown, the side fixing mechanism 6 includes a cover plate 61 and a fixing pipe 62. Both ends of the fixing pipe 62 are fixedly connected to the inner wall of the inner cylinder 2 and the outer cylinder 1 respectively. Cover plates 61 are symmetrically fixed to the inner walls of the inner cylinder 2 and the outer cylinder 1 on both sides of the fixing pipe 62. Cooperating with the top support frame 11, the connection between the top of the inner cylinder 2 and the outer cylinder 1 is more stable.

[0028] Reference Figure 6 As shown, the base fixing mechanism 4 includes a first ear plate 41, a second ear plate 42, a connecting block 43, a fixing block 44 and a cold insulation pad 45. The fixing blocks 44 are symmetrically fixed to both sides of the bottom of the inner cylinder 2. A connecting block 43 is slidably connected inside the fixing block 44. One end of the connecting block 43 away from the fixing block 44 is fixed with a first ear plate 41, and a second ear plate 42 is fixed to the bottom of the first ear plate 41. The second ear plate 42 is fixedly connected to the inner wall of the outer cylinder 1. A cold insulation pad 45 is fixed at the connection between the first ear plate 41 and the second ear plate 42. Sliders 431 are symmetrically fixed to both sides of the connecting block 43, and chutes 441 are provided in the fixing block 44 corresponding to the moving paths of the sliders 431. The sliders 431 are slidably connected to the chutes 441. The first ear plate 41 and the second ear plate 42 are fixedly connected by screws and nuts. When the distance between the inner cylinder 2 and the inner wall of the outer cylinder 1 changes due to deformation, it moves under the action of the sliders 431 and the chutes 441, so that the first ear plate 41 and the second ear plate 42 can still be stably fixed to support the inner cylinder 2.

[0029] Reference Figure 1 and Figure 4 As shown, the anti-sinking mechanism 5 includes a support plate 51, a telescopic rod 52, a connecting plate 53 and a second spring 54. A support plate 51 is in sliding contact with the bottom of the inner cylinder 2, and telescopic rods 52 are symmetrically fixed to the bottom of the support plate 51. The bottom of the telescopic rods 52 is fixedly connected to the inner wall of the outer cylinder 1. Connecting plates 53 are symmetrically fixed to the inner wall of the outer cylinder 1 corresponding to the position of the support plate 51. One end of a second spring 54 is fixed to the bottom of the connecting plate 53, and the other end of the second spring 54 is fixedly connected to the support plate 51. When the inside of the inner cylinder 2 is overweight, there will be a downward acting force under the action of gravity. To prevent the fixing mechanism from being damaged, when the inner cylinder 2 descends, the support plate 51 plays a certain role in restraining the descent of the inner cylinder 2 under the action of the second spring 54.

[0030] Reference Figure 7 As shown, an aluminum foil heat insulation paper 111 is fixed on the surface of the top support frame 11, which has good heat insulation performance.

[0031] Working principle: When the wall of the inner cylinder 2 deforms due to thermal expansion and contraction, the connecting rod 34 will move together with the inner cylinder 2 under the action of the rotating shaft. At the same time, the first spring 33 inhibits the rotation of the connecting rod 34, thereby realizing a buffering effect on the deformation of the inner cylinder 2. The fixed pipe 62 cooperates with the top support frame 11 to make the connection between the top of the inner cylinder 2 and the outer cylinder body 1 more stable. When the distance between the inner cylinder 2 and the inner wall of the outer cylinder body 1 changes due to deformation, it moves under the action of the slider 431 and the chute 441, so that the first ear plate 41 and the second ear plate 42 can still stably fix and support the inner cylinder 2. When the inside of the inner cylinder 2 is overweight, there will be a downward acting force under the action of gravity. To prevent the fixing mechanism from being damaged, when the inner cylinder 2 descends, the support plate 51 inhibits the descent of the inner cylinder 2 under the action of the second spring 54. For this support device of the vertical low-temperature storage tank, under the combined action of the side fixing mechanism 6 and the base fixing mechanism 4, the stable connection and fixation of the inner cylinder 2 and the outer cylinder body 1 are realized. Under the action of the suspension mechanism, the side effects caused by the thermal expansion and contraction of the inner cylinder 2 are reduced, and a certain buffering effect is achieved. Under the action of the anti-sinking mechanism 5, there is a certain supporting effect on the inner cylinder 2 to prevent it from sinking and damaging the fixing mechanism. Compared with the existing device, the force is evenly distributed, the heat conduction is effectively reduced, the thermal expansion and contraction of the inner tank are solved, and energy is saved and consumption is reduced.

[0032] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A support device for a vertical cryogenic storage tank, comprising: An outer cylinder body (1), a top support frame (11) and an inner cylinder (2), wherein the inner cylinder (2) is arranged inside the outer cylinder body (1), and a top support frame (11) is fixed to the top of the inner cylinder (2). One side of the top support frame (11) away from the inner cylinder (2) is fixedly connected to the inner wall of the top of the outer cylinder body (1). It is characterized in that side fixing mechanisms (6) for connecting the top of the inner cylinder (2) and the top of the outer cylinder body (1) are symmetrically arranged on both sides of the top of the inner cylinder (2). The side fixing mechanism (6) includes a cover plate (61) and a fixing pipe (62). Two ends of the fixing pipe (62) are respectively fixedly connected to the inner walls of the inner cylinder (2) and the outer cylinder body (1), and cover plates (61) are symmetrically fixed to the inner walls of the inner cylinder (2) and the outer cylinder body (1) on both sides of the fixing pipe (62); Suspension fixing mechanisms (3) capable of alleviating the deformation caused by thermal expansion and contraction of the inner cylinder (2) are symmetrically arranged on the surface of the inner cylinder (2) at the bottom of the side fixing mechanism (6). The suspension fixing mechanism (3) includes a reinforcing ring (31), a fixing plate (32), a first spring (33) and a connecting rod (34). Two ends of the reinforcing ring (31) are respectively fixedly connected to the inner walls of the inner cylinder (2) and the outer cylinder body (1). A fixing plate (32) is fixed to the inner wall of the outer cylinder body (1) at the bottom of the reinforcing ring (31), and one side of the fixing plate (32) away from the outer cylinder body (1) is rotatably connected to a connecting rod (34) through a rotating shaft. One end of the connecting rod (34) away from the fixing plate (32) is rotatably connected to the outer wall of the inner cylinder (2) through a rotating shaft. One end of a first spring (33) is fixed to the bottom of the reinforcing ring (31), and the other end of the first spring (33) is fixedly connected to the connecting rod (34); On both sides of the bottom of the inner cylinder (2), there are base fixing mechanisms (4) symmetrically arranged at the lower ends of the suspension fixing mechanisms (3) that can connect and fix the bottom of the inner cylinder (2) and the outer cylinder body (1). The base fixing mechanism (4) includes a first ear plate (41), a second ear plate (42), a connecting block (43), a fixing block (44), and a cold insulation pad (45). The fixing blocks (44) are symmetrically fixed on both sides of the bottom of the inner cylinder (2), and a connecting block (43) is slidably connected inside the fixing block (44). One end of the connecting block (43) away from the fixing block (44) is fixed with a first ear plate (41), and a second ear plate (42) is fixed at the bottom of the first ear plate (41). The second ear plate (42) is fixedly connected to the inner wall of the outer cylinder body (1). A cold insulation pad (45) is fixed at the connection between the first ear plate (41) and the second ear plate (42). Sliders (431) are symmetrically fixed on both sides of the connecting block (43), and the fixing block (44) is provided with a chute (441) corresponding to the moving path of the slider (431). The slider (431) is slidably connected to the chute (441). The first ear plate (41) and the second ear plate (42) are fixedly connected by screws and nuts. When the distance between the inner cylinder (2) and the inner wall of the outer cylinder body (1) changes due to deformation, it moves under the action of the slider (431) and the chute (441), so that the first ear plate (41) and the second ear plate (42) can still be stably fixed to support the inner cylinder (2). On the inner wall of the bottom of the outer cylinder body (1), there is a sinking prevention mechanism (5) that can buffer the descent of the inner cylinder (2). The sinking prevention mechanism (5) includes a support plate (51), a telescopic rod (52), a connecting plate (53), and a second spring (54). The bottom of the inner cylinder (2) is in sliding contact with the support plate (51), and telescopic rods (52) are symmetrically fixed at the bottom of the support plate (51). The bottom of the telescopic rod (52) is fixedly connected to the inner wall of the outer cylinder body (1). Connecting plates (53) are symmetrically fixed on the inner wall of the outer cylinder body (1) corresponding to the position of the support plate (51). One end of a second spring (54) is fixed to the bottom of the connecting plate (53), and the other end of the second spring (54) is fixedly connected to the support plate (51).

2. The supporting device for the vertical low-temperature storage tank according to claim 1, characterized in that, An aluminum foil heat insulation paper (111) is fixed on the surface of the top support frame (11).

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