CN105114803A - Vertical low-temperature storage tank with sliding lantern ring supporting mechanism - Google Patents

Abstract

The present invention discloses a vertical low-temperature storage tank with a sliding collar support mechanism, including a tank body and a support leg, the support leg is arranged at the lower part of the tank body, the tank body includes an outer container, an inner container, a reinforcement ring, a support tube and a sliding collar support mechanism, the inner container is arranged inside the outer container, and a closed interlayer space is formed between the outer container and the inner container, the reinforcement ring and the sliding collar support mechanism are both arranged in the interlayer space; the support tube is arranged at the lower part of the interlayer space, the sliding collar support mechanism is arranged at the upper part of the interlayer space, and the outside of the sliding collar support mechanism is connected to the reinforcement ring. The present invention has a safe and reliable structure, is easy to manufacture and install, and is simple and convenient; the force is uniform, the number of transverse tie bands used is reduced, the heat leakage is reduced, and the thermal insulation performance of the low-temperature storage tank is improved. When the temperature of the inner container decreases and shrinks, it will not be restricted by the sliding collar, eliminating the thermal stress caused by temperature changes, improving the safety of the storage tank, and extending the service life of the storage tank.

Description

Vertical Cryogenic Storage Tank with Sliding Collar Support Mechanism

technical field

The invention relates to a vertical cryogenic storage tank, in particular to a vertical cryogenic storage tank adopting a sliding collar support structure, belonging to the technical field of cryogenic engineering.

Background technique

Liquids such as liquid oxygen, nitrogen, argon, and LNG are at extremely low temperatures, and there is a large temperature difference of more than 200°C from the ambient temperature. When storing these low-temperature liquids, it is necessary to reduce the intrusion of external heat as much as possible, which will cause the evaporation loss of the low-temperature liquid. Liquid equipment places extremely high demands. In engineering, double-layer tanks are usually used to store cryogenic liquids. Double-layer tanks are composed of inner and outer double-layer containers, and the interlayer space between the inner and outer containers is filled with thermal insulation materials. The support structure between the interlayers is the core component of the low-temperature storage tank. The support structure connecting the inner and outer containers not only bears the weight of the inner container itself and the liquid medium contained in it, but also resists the impact from external loads; at the same time, the heat transfer through the support structure It cannot be too large to ensure that the overall heat leakage of the cryogenic storage tank meets the insulation requirements.

For the sandwich support structure of vertical low-temperature storage tanks, in addition to setting support pipes or slings at the lower part of the storage tank to bear the weight of the inner container, it is also necessary to set up supports at the upper part of the storage tank to meet the needs of transportation and resist wind or earthquake loads. Inner container effects. At present, there are mainly two types of support structures on the upper part of vertical storage tanks: horizontally pulled belt type and radially supported tube type. Horizontal tie-belt support structure refers to placing horizontal tie-belts at a suitable position in the upper half of the interlayer space of the storage tank. In general, the number of horizontal pull belts is generally three to four. This structure can ensure the safety of storage tanks during transportation, and also has a certain ability to resist wind loads and earthquake loads. However, due to the direct welding method between the horizontal tension belt and the inner and outer containers, the flexibility is insufficient. The low-temperature liquid shrinks when it is cold, and when the inner container shrinks and deforms, it will generate a lot of thermal stress when pulling the horizontal tie belt, and the connection is easily damaged. The higher the storage tank, the greater the shrinkage of the inner container, and the greater the possibility of the transverse tie belt being broken. There have been many accidents in which the horizontal tension belt was broken in the project. For the support structure of the horizontal tension belt, due to the large number of horizontal tension belts, the heat leakage is also relatively large. The radial support tube support structure is to install a radial support tube made of low thermal conductivity material (glass fiber reinforced plastic, etc.) on the upper part of the interlayer space. One end of the radial support tube is in the slot of the outer container, and the other end is directly in contact with the inner container. . This support structure does not limit the axial displacement and radial contraction of the inner container, so there is no thermal stress and less heat leakage. This support structure also has significant disadvantages: on the one hand, when installing the radial support tube, it is necessary to open holes in the outer container, and special tooling equipment is required to complete the installation, which increases the time and difficulty of manufacturing; on the other hand, the radial support tube The support tube is expensive and the product quality is unstable.

Contents of the invention

The technical problem to be solved by the present invention is to provide a vertical cryogenic storage tank with a sliding collar support mechanism in view of the above-mentioned deficiencies in the prior art. The low-temperature storage tank adopts a support mechanism with a support tube and a sliding collar, which not only meets the strength requirements of the storage tank during transportation, but also allows the inner container of the storage tank to shrink freely without restriction at low temperature without generating additional heat. stress.

The technical scheme adopted by the vertical low-temperature storage tank with the sliding collar support mechanism of the present invention is as follows:

The vertical low-temperature storage tank with a sliding collar support mechanism of the present invention includes a tank body and outriggers, and the outriggers are arranged at the lower part of the tank body, and is characterized in that the tank body includes an outer container, an inner container, a reinforcing ring, and a support tube and a sliding collar support mechanism, the inner container is arranged inside the outer container, and a closed interlayer space is formed between the outer container and the inner container, the reinforcing ring and the sliding collar support mechanism are both arranged in the interlayer space; the support pipe is arranged at the lower part of the interlayer space, The sliding collar supporting mechanism is arranged on the upper part of the interlayer space, the outside of the sliding collar supporting mechanism is connected with the reinforcing ring, the inside of the sliding collar supporting mechanism is attached to the outer surface of the inner container, and the reinforcing ring is connected with the outer container. The outriggers are used to support and fix the tank body. By setting the tank body into a structural form including an outer container, an inner container, a reinforcement ring and a supporting mechanism, the inner container is used to store the solution, and the outer container is used to insulate the inner container Protection, the sliding collar supporting mechanism cooperates with the reinforcing ring to fix the inner container in the outer container. The support tube is used to bear the weight of the inner container and the liquid medium stored in the inner container, and the sliding collar support mechanism can bear the weight of the inner container when the storage tank is transported horizontally.

As a preferred solution of the present invention, the number of the support tubes is three, and the three support tubes are annularly arranged in the interlayer space, and the upper part of the support tubes is fixedly connected to the outer wall of the inner container, and the lower end of the support tubes is fixed to the bottom of the outer container connect. Three support pipes are arranged outside the inner container in a triangular layout, which ensures the support stability of the inner container.

As a preferred solution of the present invention, the reinforcement rings are arranged at intervals up and down in the interlayer space, and the outer side of each reinforcement ring is fixedly connected with the inner wall of the outer container; a set of sliding collar support mechanisms is provided inside the uppermost reinforcement ring. By setting up a set of sliding collar support mechanisms, on the one hand, it can play a very good supporting role, and on the other hand, it can try to avoid heat transfer from the inner container to the outer container through the sliding collar support mechanism and the reinforcement ring, thus ensuring the tank body insulation effect.

As a preferred solution of the present invention, the sliding collar support mechanism includes a sliding collar and at least two horizontal tension belts, the sliding collar is sleeved on the outer wall of the inner container, the middle part of the horizontal tension belt is fixedly connected with the sliding collar, and the horizontal tension belt Both ends of the belt are fixedly connected with the reinforcing ring. The transverse tension belt connects the reinforcing ring and the sliding collar as a whole, so that the connection between the inner container and the outer cylinder is stable.

As a preferred solution of the present invention, the sliding collar includes a semicircular snap ring and a fastening bolt. The ports of the two semicircular snap rings are connected and fixed by fastening bolts. The two semicircular clasps are respectively clamped on the outer wall of the inner container in the form of hoops, and are connected by fastening bolts, thereby forming a circular sliding collar set on the outer wall of the inner container. Since the sliding collar is It is sleeved on the outer wall of the inner container, so that it will not affect the shape change of the inner container when it is affected by temperature.

As a preferred solution of the present invention, the semicircular snap ring is composed of a ring piece and connecting lugs arranged at both ends of the ring piece, and fastening bolt mounting holes are arranged on the connecting lugs, and the fastening bolts are inserted into the fastening bolts for installation. The oppositely arranged connecting lugs are locked and fixed in the holes. Because the ring piece has a certain width, on the one hand, it has good contact with the outer wall of the inner container, and on the other hand, it has a good supporting and protecting effect on the inner container. The connecting ear piece and the ring piece are integrally formed, and the connecting ear piece is arranged on the opposite outer side of the ring piece. By setting the connecting ear piece, the two ring pieces can be stably locked and connected to prevent the ring piece from loosening.

As a preferred solution of the present invention, the horizontal tension belt includes a first connecting section, a second connecting section and a third connecting section, the first connecting section is twistedly connected with the second connecting section and the third connecting section, and the first connecting section The torsion angle between the second connecting section, the second connecting section and the third connecting section is 90 degrees; the first connecting section and the third connecting section are fixedly connected to the upper surface of the reinforcement ring, and the second connecting section is connected to the outside of the ring piece Fixed connection. The horizontal tension belt is used to connect the reinforcement ring and the sliding collar, and the horizontal tension belt can be increased by setting the horizontal tension belt in a twisted connection mode from the first connection section, the second connection section and the third connection section. The welding area of the reinforcement ring and the sliding collar makes the connection more stable.

As a preferred solution of the present invention, the outer container is composed of a first straight section, a first upper head and a first lower head, and the first upper head and the first lower head are respectively arranged above and below the first straight section. Both ends are sealed and connected with the first straight section; the inner container is composed of a second straight section, a second upper head and a second lower head, and the second upper head and the second lower head are respectively arranged on the second The upper and lower ends of the straight section are sealed and connected with the second straight section; the ring piece is closely attached to the outer wall of the second straight section, and the reinforcement ring is welded to the inner wall of the first straight section; the inner side of the upper part of the support tube is welded to the outer wall of the second straight section , the lower end of the support tube is welded to the inner wall of the first lower head; the first and third connecting sections of the transverse tension belt are welded to the upper surface of the reinforcement ring, and the second connecting section is welded to the outer wall of the ring piece.

As a preferred solution of the present invention, the ring piece, the connecting lug and the horizontal pull belt are made of stainless steel, the connecting ear piece made of stainless steel and the horizontal pull belt made of stainless steel. Stainless steel has good corrosion resistance, toughness and weldability.

As a preferred solution of the present invention, a heat insulating layer is provided between the outer container and the inner container, and the heat insulating layer is a heat insulating layer of perlite material. By arranging an insulating layer between the outer container and the inner container, the intrusion of external heat into the inner container can be further reduced, thus avoiding the loss caused by the evaporation of the cryogenic liquid.

To sum up, the advantages of the vertical low-temperature storage tank with supporting mechanism of the present invention are: safe and reliable structure, less difficulty in manufacture and installation, simple and convenient;

Due to the adoption of the support mechanism with the support tube and the sliding collar assembly, the force is uniform, the number of horizontal tension belts is reduced, the leakage of heat is reduced, and the heat insulation performance of the cryogenic storage tank is improved. The sliding collar structure is simple and quick to manufacture, stable and reliable, which reduces the production cycle of the storage tank and improves the production efficiency;

When the temperature of the inner container shrinks, it will not be restricted by the sliding collar, which eliminates the thermal stress caused by temperature changes, improves the safety of the storage tank, and prolongs the service life of the storage tank.

Description of drawings

Fig. 1 is an overall schematic diagram of a vertical cryogenic storage tank with a sliding collar support mechanism according to the present invention.

Fig. 2 is a schematic perspective view of a vertical cryogenic storage tank with a sliding collar support mechanism according to the present invention.

Fig. 3 is a schematic diagram of a sliding collar support mechanism of a vertical cryogenic storage tank with a sliding collar support mechanism according to the present invention.

Fig. 4 is a structural schematic diagram of the horizontal tension belt of the vertical cryogenic storage tank with a sliding collar support mechanism according to the present invention.

Detailed ways

As shown in Figures 1 to 4, the vertical cryogenic storage tank with a sliding collar support mechanism of the present invention includes a tank body and a leg 1, and the leg 1 is arranged at the lower part of the tank body. The tank body includes an outer container 2, an inner container 3, a reinforcing ring 4, a support tube 5 and a sliding collar support mechanism, the inner container 3 is arranged inside the outer container 2, and a closed interlayer space is formed between the outer container 2 and the inner container 3 , the reinforcing ring 4 and the sliding collar supporting mechanism are all set in the interlayer space.

The outrigger 1 is used to support and fix the tank body. By setting the tank body into a structural form including an outer container 2, an inner container 3, a reinforcement ring 4 and a supporting mechanism, the inner container 3 is used to store the solution, and the outer container 2 Used for thermal insulation protection of the inner container 3, the sliding collar supporting mechanism cooperates with the reinforcement ring 4 to fix the inner container 3 in the outer container 2, and the reinforcement ring 4 has the function of improving the external pressure resistance of the outer container 2.

The outer container 2 is composed of a first straight cylinder section 2-1, a first upper head 2-2 and a first lower head 2-3, and the first upper head 2-2 and the first lower head 2-3 are set respectively The upper and lower ends of the first straight cylinder section 2-1 are sealed and connected with the first straight cylinder section 2-1. The material of the first straight barrel section 2-1, the first upper head 2-2 and the first lower head 2-3 is carbon steel. Carbon steel has good strength and hardness, and good wear resistance, and the outer container made of carbon steel can protect the inner container 3 .

The inner container 3 is composed of a second straight section 3-1, a second upper head 3-2 and a second lower head 3-3, and the second upper head 3-2 and the second lower head 3-3 are respectively set At the upper and lower ends of the second straight section 3-1 and sealed with the second straight section 3-1, the second straight section 3-1, the second upper head 3-2 and the second lower head 3-3 The materials are all low-temperature-resistant stainless steel, which has good toughness at low temperatures, so that the inner container 3 has good low-temperature resistance.

A heat insulating layer is arranged between the outer container 2 and the inner container 3, and the heat insulating layer is a heat insulating layer of perlite material. By arranging an insulating layer between the outer container 2 and the inner container 3, the intrusion of external heat into the inner container can be further reduced, thereby avoiding the loss caused by the evaporation of the cryogenic liquid. Perlite is a lightweight and multi-functional new material with light apparent density, low thermal conductivity, good chemical stability, wide temperature range, low moisture absorption capacity, non-toxic, tasteless, fireproof, sound-absorbing and other characteristics, thus Improve the thermal insulation effect of the thermal insulation layer.

The support pipe 5 is arranged at the lower part of the interlayer space, the sliding collar support mechanism is arranged at the upper part of the interlayer space, the outside of the sliding collar support mechanism is connected with the reinforcing ring, the inside of the sliding collar supporting mechanism is connected with the inner container 3, and the reinforcing ring 4 Connected with the outer container 2. When the cryogenic storage tank is placed vertically, the weight of the inner container 3 and the cryogenic liquid medium is entirely borne by the support pipe 5 . In the transportation state, the weight of the inner container of the storage tank is jointly borne by the support pipe 5 and the sliding collar supporting mechanism, wherein the sliding collar supporting mechanism bears about half of the weight.

The number of support tubes 5 is three, and the three support tubes 5 are annularly arranged in the interlayer space, and the upper part of the support tubes 5 is fixedly connected with the outer wall of the inner container 3, and the lower end of the support tubes 5 is fixedly connected with the bottom of the outer container 2. The three support pipes 5 are arranged outside the inner container 3 in a triangular layout to ensure the stability of supporting the inner container 3 . Preferably, the upper inner side of the support pipe 5 is welded to the outer wall of the second straight section 3-1, and the lower end of the support pipe 5 is welded to the inner wall of the first lower head 2-3.

The reinforcement rings are arranged at intervals up and down in the interlayer space, and the outer side of each reinforcement ring 4 is fixedly connected with the inner wall of the outer container 2 by welding. A group of sliding collar support mechanisms are arranged inside the uppermost reinforcing ring 4 , and the sliding collar support mechanisms are connected with the inner container 3 . Since the reinforcement ring 4 can improve the external pressure resistance of the outer container 2, the external pressure resistance is further improved by setting the reinforcement ring 4. By setting up a set of sliding collar support mechanisms, on the one hand, it can play a very good supporting role, and on the other hand, it can try to avoid heat transfer from the inner container to the outer container through the sliding collar support mechanism and the reinforcement ring, thus ensuring the tank body insulation effect.

The sliding collar support mechanism includes a sliding collar 6 and at least two horizontal tension belts 7, the sliding collar 6 is sleeved on the outer wall of the inner container 3, the middle part of the horizontal tension belt 7 is fixedly connected with the sliding collar 6, and the two horizontal tension belts 7 The end is fixedly connected with the reinforcement ring 4. The horizontal tension belt 7 connects the reinforcing ring 4 and the sliding collar 6 as a whole, so that the connection between the inner container 3 and the outer cylinder 2 is stable. Since the sliding collar 6 covers the inner container 3 in its entire circle, the force is very uniform and no stress concentration will occur. When the inner container 3 shrinks when it is cold, the sliding collar 6 is disengaged from the inner container 3 to form a gap, which does not limit the displacement of the inner container and eliminates the thermal stress caused by temperature changes. Specifically, in the working state, the temperature of the inner container 3 decreases to produce radial and axial shrinkage. Since the inner container 3 and the sliding collar 6 are not welded, the deformation will not be limited and restrained, so no additional stress will be generated. . When the cryogenic liquid in the storage tank is drained and rewarmed, the shape of the inner container 3 returns to its original state, and the second straight section 3-1 of the inner container 3 contacts the sliding collar 6 again.

The sliding collar 6 includes a semicircular snap ring 6-1 and a fastening bolt 6-2, the number of the semicircular snap ring 6-1 is two, and the two semicircular snap rings 6-1 are arranged oppositely and The shapes match each other, and the ports of the two semicircular snap rings 6-1 are connected and fixed by fastening bolts 6-2. Two semi-circular snap rings 6-1 are respectively clamped on the outer wall of the inner container 3 in the form of hoops, and are connected by fastening bolts 6-2, thereby forming a circular sliding collar 6 sleeved on the inner container 3 on the outer wall, since the sliding collar 6 is sheathed on the outer wall of the inner container, it will not affect the shape change of the inner container 3 when it is affected by temperature. This two-half structure of the sliding collar solves the problem of fitting the whole ring, and is very convenient to install and disassemble.

The semicircular snap ring 6-1 is composed of a ring piece and connecting lugs arranged at both ends of the ring piece. The ring piece is closely attached to the outer wall of the second straight barrel section, and a fastening bolt mounting hole is arranged on the connecting lug. The fastening bolt 6-2 penetrates into the fastening bolt installation hole to lock and fix the oppositely arranged connecting lugs. Because the ring piece has a certain width, it has good contact with the outer wall of the inner container 3 on the one hand, and has a good supporting and protecting effect on the inner container 3 on the other hand. The connecting ear piece and the ring piece are integrally formed, and the connecting ear piece is arranged on the opposite outer side of the ring piece. By setting the connecting ear piece, the two ring pieces can be stably locked and connected to prevent the ring piece from loosening.

The horizontal tension belt 7 is used to connect the reinforcement ring 4 and the sliding collar 6 together, and the horizontal tension belt 7 includes a first connection section 7-1, a second connection section 7-2 and a third connection section 7-3, The first connecting section 7-1 is twistedly connected with the second connecting section 7-2 and the third connecting section 7-3, and the first connecting section 7-1 is connected with the second connecting section 7-2 and the second connecting section 7-2 The twisted angle with the third connecting section 7-3 is 90 degrees.

The first connection section 7-1 and the third connection section 7-3 are fixedly connected to the upper surface of the reinforcement ring 4, the connection method is welding, and the second connection section 7-2 is fixedly connected to the outside of the ring piece, and the connection method is welding. By arranging the horizontal tension belt to adopt the twisted connection mode from the first connecting section, the second connecting section and the third connecting section, the welding area between the horizontal tension belt 7 and the reinforcement ring 4 and the sliding collar 6 can be increased, so that the connection more stable.

The ring pieces, connecting lugs and horizontal pull belt 7 are preferably ring pieces made of stainless steel, connecting ears made of stainless steel and horizontal pull belts made of stainless steel. Stainless steel has good corrosion resistance, toughness and weldability.

The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and can also be made without departing from the gist of the present invention within the scope of knowledge of those skilled in the art. Variations.

Claims (10)

1. A vertical low-temperature storage tank with a sliding collar support mechanism, comprising a tank body and outriggers (1), and the outriggers (1) are arranged at the lower part of the tank body, characterized in that the tank body includes an outer container ( 2), the inner container (3), the reinforcing ring (4), the support tube (5) and the sliding collar support mechanism, the inner container (3) is arranged inside the outer container (2), and the outer container (2) and the inner container (3) ) to form a closed interlayer space, the reinforcing ring (4) and the sliding collar support mechanism are both arranged in the interlayer space; the support tube (5) is arranged in the lower part of the interlayer space, and the sliding collar support mechanism is arranged in the upper part of the interlayer space The outside of the collar supporting mechanism is connected with the reinforcing ring (4), the inside of the sliding collar supporting mechanism is attached to the outer surface of the inner container (3), and the reinforcing ring (4) is connected with the outer container (2). 2. The vertical cryogenic storage tank with a sliding collar support mechanism according to claim 1, characterized in that: the number of the support tubes (5) is three, and the three support tubes (5) are arranged in a ring shape In the interlayer space, the upper part of the support tube (5) is fixedly connected to the outer wall of the inner container (3), and the lower end of the support tube (5) is fixedly connected to the bottom of the outer container (2). 3. The vertical low-temperature storage tank with a sliding collar support mechanism according to claim 1, characterized in that: the reinforcement rings (4) are arranged at intervals up and down in the interlayer space, and the outer sides of each reinforcement ring (4) Both are fixedly connected with the inner wall of the outer container (2); a set of sliding collar support mechanisms are arranged inside the uppermost reinforcing ring (4), and the sliding collar support mechanisms are connected with the inner container (3). 4. The vertical cryogenic storage tank with a sliding collar support mechanism according to claim 3, characterized in that: the sliding collar support mechanism comprises a sliding collar (6) and at least two horizontal tension belts (7) , the sliding collar (6) is nested on the outer wall of the inner container (3), the middle part of the horizontal tension belt (7) is fixedly connected with the sliding collar (6), and the two ends of the horizontal tension belt (7) are fixed with the reinforcement ring (4) connect. 5. The vertical cryogenic storage tank with a sliding collar support mechanism according to claim 4, characterized in that: the sliding collar (6) includes a semicircular snap ring (6-1) and fastening bolts ( 6-2), the number of semicircular snap rings (6-1) is two, and the two semicircular snap rings (6-1) are set opposite to each other and their shapes match each other. When the two semicircular snap rings (6-1) -1) The port is connected and fixed by fastening bolts (6-2). 6. The vertical cryogenic storage tank with a sliding collar support mechanism according to claim 5, characterized in that: the semicircular snap ring (6-1) consists of a ring piece and connecting ears arranged at both ends of the ring piece The connecting lugs are composed of fastening bolt mounting holes, and the fastening bolts (6-2) penetrate into the fastening bolt mounting holes to lock and fix the opposite connecting lugs. 7. The vertical cryogenic storage tank with a sliding collar support mechanism according to claim 6, characterized in that: the horizontal tension belt (7) includes a first connecting section (7-1), a second connecting section ( 7-2) and the third connecting section (7-3), the first connecting section (7-1) is connected with the second connecting section (7-2) and the third connecting section (7-3) in a twisted manner, the first The torsion angle between the connection section (7-1) and the second connection section (7-2), the second connection section (7-2) and the third connection section (7-3) is 90 degrees; the first connection The segment (7-1) and the third connecting segment (7-3) are fixedly connected to the upper surface of the reinforcement ring (4), and the second connecting segment (7-2) is fixedly connected to the outside of the ring piece. 8. The vertical cryogenic storage tank with a sliding collar support mechanism according to claim 7, characterized in that: the outer container (2) consists of a first straight cylinder section (2-1), a first upper head ( 2-2) and the first lower head (2-3), the first upper head (2-2) and the first lower head (2-3) are respectively set in the straight cylinder section (2-1) The upper and lower ends of the upper and lower ends are welded to the first straight section (2-1); the inner container (3) is composed of the second straight section (3-1), the second upper head (3-2) and the second lower The head (3-3) is composed of the second upper head (3-2) and the second lower head (3-3) respectively arranged at the upper and lower ends of the second straight section (3-1) and connected with the second The straight section (3-1) is welded and connected; the ring piece is tightly attached to the outer wall of the second straight section (3-1), and the reinforcement ring (4) is welded to the inner wall of the first straight section (2-1); the support pipe (5 ) The inner side of the upper part is welded to the outer wall of the second straight section (3-1), and the lower end of the support pipe (5) is welded to the inner wall of the first lower head (2-3); the first connecting section of the horizontal tension belt (7-1 ) and the third connecting section (7-3) are welded to the upper surface of the reinforcement ring (4), and the second connecting section (7-2) is welded to the outer wall of the ring piece. 9. The vertical low-temperature storage tank with a sliding collar support mechanism according to claim 7, characterized in that: the ring piece, the connecting ear piece, and the horizontal pull belt (7) are stainless steel ring pieces, stainless steel connecting pieces Lugs and stainless steel cross straps. 10. The vertical cryogenic storage tank with sliding collar support mechanism according to claim 1, characterized in that: an insulation layer is provided between the outer container (2) and the inner container (3), and the insulation layer is pearl Rock material insulation layer.