CN117028827A

CN117028827A - Fixing module of low-temperature film storage container and low-temperature film storage container

Info

Publication number: CN117028827A
Application number: CN202311295429.3A
Authority: CN
Inventors: 魏颖; 何炜
Original assignee: Zhongtaihai Carbon Shanghai Environmental Protection Technology Co ltd
Current assignee: Zhongtaihai Carbon Shanghai Environmental Protection Technology Co ltd
Priority date: 2023-10-09
Filing date: 2023-10-09
Publication date: 2023-11-10

Abstract

The application provides a fixing module of a low-temperature film storage container and the low-temperature film storage container, wherein the fixing module can compensate the downward deformation of an insulation box, so that the damage risk of a film shielding layer is reduced, and the installation stability of the insulation box and the film shielding layer can be ensured; the fixing module can also compensate for the difference of cold shrinkage deformation of the fixing module and the insulating filling piece, so that the risk of collapse of the insulating filling piece is reduced; the bottom nut of the fixed module can be quickly replaced and axially inclined, so that the installation difficulty is reduced, and the installation efficiency is improved; the lateral force and the torsion of the upper structure of the low-temperature film storage container can be transmitted downwards through the insulating filling piece, so that the shearing force born by the screw rod of the fixed module is reduced, and the screw rod is not easy to break.

Description

Fixing module of low-temperature film storage container and low-temperature film storage container

Technical Field

The application relates to the field of ship and ocean engineering equipment, in particular to a fixing module of a low-temperature film storage container and the low-temperature film storage container.

Background

Liquefied Natural Gas (LNG), liquid hydrogen and other frozen liquefied gases are always used as the first choice energy source for petroleum substitution with the advantages of green, environment protection and high efficiency. The frozen liquefied gas is stored in a low temperature film storage container. The cryogenic film storage vessel may be used for land storage tanks and liquid cargo carriers (e.g., LNG carriers or liquid hydrogen carriers).

The wall of the low-temperature film storage container is of a multi-layer structure and comprises an insulating layer, a film shielding layer and the like. At present, the low-temperature film storage container has the following defects: when the low-temperature film storage container is subjected to a large external force, the film shielding layer is easy to damage; when the low-temperature film storage container suffers low-temperature cold shrinkage, the insulating layer is easy to collapse; the installation is difficult and the installation efficiency is low; the screw for fixing the insulating layer is easily broken. Especially for transport vessels, the external environment is more complex and unstable than that of land tanks, and the requirements for mechanical properties of the walls are higher.

The method avoids the defects partially or totally, improves the performance of the low-temperature film storage container, and is a technical problem to be solved by the technicians in the field.

Disclosure of Invention

In order to solve the above problems, the present application provides a fixing module of a low-temperature thin film storage container, where the fixing module includes an upper connecting member, a lower connecting member, a first elastic member and a limiting member, the upper connecting member can float up and down relative to the lower connecting member, and the first elastic member is disposed between the upper connecting member and the lower connecting member;

the limiting piece is rigidly connected with the upper connecting piece and can limit the floating limit of the upper connecting piece by rigidly abutting against the lower connecting piece;

or, the limiting piece is rigidly connected with the lower connecting piece and can limit the floating limit of the upper connecting piece by rigidly abutting against the upper connecting piece.

One embodiment of the fixing module of the low-temperature film storage container, the limiting piece comprises a guide shaft and a supporting contact, the upper connecting piece or the lower connecting piece is provided with a guide hole, the guide hole and the guide shaft are matched to guide the upper connecting piece to float up and down, the radial dimension of the supporting head is larger than the aperture of the guide hole, and the supporting head rigidly supports the lower connecting piece or the upper connecting piece to limit the floating limit of the upper connecting piece.

In one embodiment of the fixing module of the low-temperature film storage container, the upper connecting piece comprises an upper guide cylinder, the lower connecting piece comprises a lower guide cylinder, and the upper guide cylinder and the lower guide cylinder are matched with each other to guide the upper connecting piece to float up and down.

One embodiment of the fixing module of the low-temperature film storage container, the upper connecting piece comprises an upper connecting plate, the upper connecting plate adopts a flat plate, and the flat plate supports a film shielding layer of the low-temperature film storage container;

or, the upper connecting piece comprises an upper connecting plate, the middle part of the upper connecting plate is convex upwards, the periphery of the upper connecting plate is concave downwards, the convex part of the middle part of the upper connecting plate is used for supporting the film shielding layer of the low-temperature film storage container, the periphery of the upper connecting plate is concave downwards, and the elastic part is used for supporting the film shielding layer of the low-temperature film storage container.

One embodiment of the fixing module of the low-temperature film storage container, the lower connecting piece comprises a lower connecting plate, and the lower connecting plate is used as an upper insulating plate of an insulating filling piece of the low-temperature film storage container;

alternatively, the lower connection member includes a lower connection plate supported on an upper insulation plate of an insulation filling member of the low temperature thin film storage container.

An embodiment of a fixing module of a low-temperature film storage container comprises a screw, a bottom nut, a second elastic piece and a self-locking nut, wherein the upper end of the screw penetrates through the lower connecting piece and is connected with the self-locking nut above the lower connecting piece, the second elastic piece is arranged between the self-locking nut and the lower connecting piece, and the lower end of the screw is connected with the bottom nut.

An embodiment of the fixing module of the low-temperature film storage container comprises a nut seat, wherein the bottom nut is installed in a seat cabin of the nut seat and can axially incline and radially deviate in the seat cabin, an upper limiting wall for limiting the bottom nut is arranged above the seat cabin of the nut seat, and side limiting walls for limiting the bottom nut are arranged around the seat cabin of the nut seat.

In one embodiment of the fixing module of the low-temperature film storage container, at least one side of the nut seat is provided with a side opening for taking and placing the bottom nut.

In addition, the application also provides a low-temperature film storage container, the wall of the low-temperature film storage container comprises a base layer, an insulating layer, a film shielding layer and an upper layer structure which are sequentially arranged from bottom to top, the insulating layer comprises an insulating box and insulating filling pieces arranged in a splicing gap of the insulating box, the wall also comprises a fixed pressing plate, a pressing module and any one of the fixed modules, the upper connecting piece of the fixed module supports the film shielding layer and the upper layer structure, the pressing module is connected with the upper connecting piece of the fixed module, the lower connecting piece of the fixed module is connected with the insulating filling pieces or is used as a part of the insulating filling pieces, the pressing module downwards presses the fixed pressing plate, and the fixed pressing plate presses the upper layer structure, the film shielding layer and the insulating box on the base layer.

In one embodiment of the low-temperature thin film storage container, the insulating filler comprises an upper insulating plate, an insulating main body and a side insulating plate, wherein the upper insulating plate, the insulating main body and the side insulating plate are fixed together, the material rigidity of the upper insulating plate and the material rigidity of the side insulating plate are both larger than those of the insulating main body, the side insulating plate is arranged on the side surface of the insulating main body, and the upper insulating plate is pressed downwards to press the side insulating plate.

The application has the following advantages:

(1) The first fixed component of the fixed module can compensate the downward deformation of the insulation box caused by downward movement of the upper structure, and the damage risk of the thin film shielding layer is reduced.

(2) The second fixing component of the fixing module can compensate the cold shrinkage deformation difference of the fixing module and the insulating filling piece, and the collapse risk of the insulating filling piece is reduced.

(3) The first fixing component of the fixing module is elastic when bearing pressure, thereby having the compensation function, and is rigid when bearing tension, thereby ensuring reliable fixing and stable installation.

(4) The first fixed component and the second fixed component of the fixed module can elastically deform downwards when bearing pressure, the lower pressure of the upper layer structure is mainly borne by the insulation box, and the fixed module only bears small lower pressure, so that the fixed module is not easy to damage, and the requirement on the fixed module is reduced, for example, the total cross-sectional area of the screw rods of the fixed module can be designed to be smaller (for example, one fixed module is provided with double screw rods in the past, and one fixed module can be provided with only a single screw rod at present), and the reduction of the total cross-sectional area of the screw rods of the fixed module can reduce cold leakage.

(5) The bottom nut of the fixed module can be axially inclined and radially offset to adapt to certain construction and installation errors, so that the installation difficulty of the screw is reduced, and the installation efficiency is improved.

(6) The bottom nut of the fixed module can be replaced quickly.

(7) The lateral force and the torsion of the upper structure can be transmitted downwards through the insulating filling piece, so that the shearing force born by the screw rod of the fixed module is reduced, and the screw rod is not easy to break.

Drawings

FIG. 1 is a partial cross-sectional view of a first embodiment of a cryogenic film storage vessel provided by the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a perspective view of the securing module and insulating filler of FIG. 1;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a partial cross-sectional view of a second embodiment of a cryogenic film storage vessel provided by the application;

FIG. 6 is a perspective view of the securing module and insulating filler of FIG. 5;

FIG. 7 is an exploded view of FIG. 6;

FIG. 8 is a perspective view of one embodiment of a nut seat;

fig. 9 is a perspective view of one embodiment of a base nut.

The reference numerals are explained as follows:

1, fixing a module;

11 a first fixing component, 111 an upper connecting piece, 1111 an upper connecting plate, 1112 an upper guide cylinder, 112 a lower connecting piece, 1121 a lower connecting plate, 1122 a lower guide cylinder, 113 a first elastic piece, 114 a limiting piece, 1141 a guide shaft, 1142 a contact and 115 an elastic part;

the second fixing component, 121 screw, 122 bottom nut, 1221 arc surface, 123 second elastic piece, 124 self-locking nut, 125 mounting seat, 126 nut seat, 1261 upper limit wall, 1262 side limit wall, 1263 side opening;

2 a base layer;

3 insulating layers, 31 insulating boxes, 311 upper box plates, 312 box bodies, 32 insulating filling pieces, 321 upper insulating plates, 322 insulating bodies and 323 side insulating plates;

4, a thin film shielding layer;

5, fixing a pressing plate;

6, a superstructure;

and 7, compacting the module.

Detailed Description

The application provides a fixing module of a low-temperature film storage container and the low-temperature film storage container, and in order to enable a person skilled in the art to better understand the technical scheme of the application, the technical scheme of the application is further described in detail below with reference to the accompanying drawings and the specific embodiments.

First, the low temperature film storage container provided by the present application will be described.

As shown in fig. 1, the wall of the low-temperature film storage container provided by the application is of a multi-layer structure, and comprises a base layer 2, an insulating layer 3, a film shielding layer 4, a fixed pressing plate 5 and an upper layer structure 6 which are sequentially arranged from bottom to top, and further comprises a fixed module 1 and a pressing module 7. It should be noted that the position relatively close to the content in the container is referred to herein as "up", and the position relatively far from the content in the container is referred to herein as "down".

Wherein the insulating layer 3 comprises an insulating box 31 and an insulating filler 32. The insulating layer 3 is mainly formed by splicing insulating boxes 31, and insulating fillers 32 are provided in the splice gaps of the insulating boxes 31.

Wherein the fixing modules 1 are arranged in the splice gap of the insulation boxes 31.

Wherein, the film shielding layer 4 is arranged above the insulating box 31 and the fixed module 1, the upper layer structure 6 is arranged above the film shielding layer 4, and the film shielding layer 4 and the upper layer structure 6 are jointly supported by the insulating box 31 and the fixed module 1.

Wherein the compression module 7 is connected with the upper connection 111 of the fixation module 1. The pressing module 7 presses the fixed pressing plate 5 downward, and the fixed pressing plate 5 presses the upper layer structure 6, the film shielding layer 4 and the insulation box 31 onto the base layer 2. Specifically, the fixing module 1 may be disposed between adjacent sides of the two insulation boxes 31, so that the same fixing module 1 is used for fixing the two insulation boxes 31 at the same time, or the fixing module 1 may be disposed at a splicing angle position of the four insulation boxes 31, so that the same fixing module 1 is used for fixing the four insulation boxes 31 at the same time.

As shown in fig. 2, the insulating case 31 includes an upper case plate 311 and a case body 312 fixed together, and the upper case plate 311 is fixed to an upper end surface of the case body 312. The rigidity of the upper case plate 311 is greater than that of the case body 312, and specifically, the upper case plate 311 may be made of plywood, and the case body 312 may be made of reinforced polyurethane heat insulating material.

As shown in fig. 3, the insulation filler 32 includes an upper insulation plate 321 and an insulation body 322 fixed together, and the upper insulation plate 321 is fixed on an upper end surface of the insulation body 322. The upper insulating plate 321 has a material stiffness greater than that of the insulating body 322, and in particular, the upper insulating plate 321 may be a metal plate and the insulating body 322 may be a reinforced polyurethane insulating material.

The structure of the fixing module 1 provided by the present application is described below.

As shown in fig. 2, the fixing module 1 provided by the present application includes a first fixing assembly 11, where the first fixing assembly 11 includes an upper connecting member 111, a lower connecting member 112, a first elastic member 113 and a limiting member 114. In the applied state, the upper connecting piece 111 supports the film shielding layer 4, the fixed pressing plate 5 and the upper layer structure 6 upwards, the upper connecting piece 111 is connected with the pressing module 7, and the lower connecting piece 112 is connected with the insulating filling piece 32 or is a part of the insulating filling piece 32.

The upper link 111 can float up and down with respect to the lower link 112. The first elastic member 113 is disposed between the upper and lower connection members 111 and 112. The first elastic member 113 may employ a spring, such as a low temperature compression spring.

As shown in fig. 2-4, the stop 114 is rigidly connected, such as rigidly threaded, to the lower connector 112. In addition, the limiting member 114 can rigidly abut against the upper connecting member 111 to limit the floating limit of the upper connecting member 111, that is, when the upper connecting member 111 floats upward to the limit position relative to the lower connecting member 112, the limiting member 114 rigidly abuts against the upper connecting member 111, so that the upper connecting member 111 cannot further float upward relative to the lower connecting member 112.

Alternatively, the stopper 114 may be rigidly connected to the upper connector 111 as shown in fig. 5 to 7. In addition, the limiting member 114 can rigidly abut against the lower connecting member 112 to limit the floating limit of the upper connecting member 111, that is, when the upper connecting member 111 floats upward to the limit position relative to the lower connecting member 112, the limiting member 114 rigidly abuts against the lower connecting member 112, so that the upper connecting member 111 cannot further float upward relative to the lower connecting member 112.

The fixing module 1 provided by the application can compensate the downward deformation of the insulation box 31, specifically, when the upper layer structure 6 moves downwards due to external force or other reasons, the insulation box 31 is pressed to deform downwards, and the upper connecting piece 111 floats downwards relative to the lower connecting piece 112, so that the first elastic piece 113 is compressed, and the downward deformation of the insulation box 31 is elastically compensated. If the downward deformation amount of the insulation box 31 is not compensated, the thin film shielding layer 4 may be crushed or broken by the upper connector 111, so that leakage occurs. The present application provides a fixed module 1 that solves this problem.

Furthermore, the fixing module 1 provided by the application is elastic when bearing pressure, but can be rigid when bearing tensile force, because the fixing module 1 is provided with the limiting piece 114, the limiting piece 114 is rigidly connected with the upper connecting piece 111 or the lower connecting piece 112, when the upper connecting piece 111 is pulled to float upwards to a limit position relative to the lower connecting piece 112, the limiting piece 114 can rigidly abut against the lower connecting piece 112 or the upper connecting piece 111, and after abutting, the upper connecting piece 111 can not float upwards relative to the lower connecting piece 112 any more, so that rigidity is presented. This ensures that the compression module 7 connected to the upper connector 111 presses the fixed platen 5 firmly downwards, thereby ensuring a stable installation of the insulating layer 3, the film shielding layer 4 and the superstructure 6.

In short, the first fixing component 11 of the fixing module 1 provided by the application compensates the downward deformation of the insulation box 31 through elastic bearing, reduces the damage risk of the thin film shielding layer 4, and ensures the installation stability of the insulation layer 3, the thin film shielding layer 4 and the upper structure 6 through rigid pull.

In one embodiment, as shown in FIG. 4, stop 114 includes a interference head 1142 and a guide shaft 1141. The interference head 1142 rigidly interferes with the upper connector 111 to limit the floating limit of the upper connector 111. The upper connector 111 is provided with a guide hole. The radial dimension of the abutment 1142 is greater than the aperture of the pilot hole. The guide shaft 1141 is rigidly connected to the lower web 1121 of the lower link 112. The guide shaft 1141 is inserted into the guide hole, and the guide shaft 1141 cooperates with the guide hole to guide the upper connector 111 to float up and down. Specifically, in fig. 4, a bolt is provided, a threaded rod of the bolt passes through a guide hole on the upper connecting piece 111 and is in threaded connection with the lower connecting plate 1121 of the lower connecting piece 112, the threaded rod of the bolt forms the guide shaft 1141, and the head of the bolt forms the abutting head 1142.

Alternatively, as shown in fig. 7, a guide hole may be provided in the lower link 112. The guide shaft 1141 is rigidly connected to the upper limiter 114. The abutment 1142 rigidly abuts the lower link 112 to limit the float limit of the upper link 111. Specifically, in fig. 7, another simple way of forming the guide shaft 1141 and the interference head 1142 is illustrated in fig. 9: the upper nut is fixed on the upper connecting piece 111, the lower nut is connected with the lower end of the stud, the upper end of the stud passes through a guide hole on the lower connecting piece 112 and then is connected with the upper nut, the stud forms the guide shaft 1141, and the lower nut forms the abutting head 1142.

The guide shaft 1141 cooperates with the guide hole to guide the upper connector 111 to float up and down, so that the possibility of tilting the upper connector 111 during floating up and down can be reduced.

In one embodiment, as shown in fig. 7, the upper connector 111 includes an upper guide cylinder 1112, the lower connector 112 includes a lower guide cylinder 1122, and the upper guide cylinder 1112 and the lower guide cylinder 1122 cooperate to guide the upper connector 111 to float up and down.

The upper guide cylinder 1112 and the lower guide cylinder 1122 cooperate to guide the upper connector 111 to float up and down, so that the possibility of tilting of the upper connector 111 during floating up and down can be reduced. In addition, the upper guide cylinder 1112 and the lower guide cylinder 1122 also function to increase the shear capacity of the fixing module 1 and transfer lateral force and torsion force, and can transfer the lateral force or torsion force applied to the upper connection member 111 downward, thereby reducing the probability of lateral deflection and circumferential rotation of the upper connection member 111. In addition, the upper guide cylinder 1112 and the lower guide cylinder 1122 may also serve as mounting seats for the first elastic member 113.

Specifically, the walls of the upper guide cylinder 1112 and the lower guide cylinder 1122 may be full cylindrical walls around the entire circumference, or may be partial cylindrical walls formed by a plurality of arcuate walls arranged at intervals in the circumferential direction (this form is shown in fig. 7).

In one embodiment, as shown in fig. 4, the upper connector 111 includes an upper connector 1111, where the middle of the upper connector 1111 is convex and the periphery is concave, and the periphery is concave and provided with an elastic portion 115. As shown in fig. 2, in use, the intermediate raised portion of the upper connection plate 1111 and the elastic portion 115 contact the thin film shielding layer 4, and support the thin film shielding layer 4. Providing the elastic portion 115 can reduce the risk of breakage of the thin film shielding layer 4 to a greater extent. In addition, the middle upward protruding portion of the upper connection plate 1111 may also serve as a mounting seat for the first elastic member 113.

Alternatively, it is also possible to provide the upper connection plate 1111 as shown in fig. 7 as a flat plate structure. As shown in fig. 5, in use, the upper connection plate 1111 contacts the thin film shielding layer 4 and supports the thin film shielding layer 4. In this way, the contact area between the upper connection plate 1111 and the thin film shielding layer 4 is large, and the supporting property of the thin film shielding layer 4 is good.

In one embodiment, as shown in fig. 4, the lower connection member 112 includes a lower connection plate 1121, and the lower connection plate 1121 serves as an upper insulating plate 321 of the insulating filler 32. In this way, lateral and torsional forces transmitted from the guide shaft 1141 can be transmitted to the insulating filler 32 and further down by the insulating filler 32.

Alternatively, as shown in fig. 7, the lower connection plate 1121 may be supported on the upper insulation plate 321 of the insulation filler 32.

In one embodiment, as shown in fig. 4 or fig. 7, in order to enable the force to be transmitted downwards, the insulating filler 32 is further provided with a side insulating plate 323, the side insulating plate 323 is tightly attached to the side surface of the insulating main body 322, the upper insulating plate 321 of the insulating filler 32 is tightly pressed on the side insulating plate 323, the material rigidity of the side insulating plate 323 is greater than that of the insulating main body 322, specifically, the side insulating plate 323 can be made of plywood, and the insulating main body 322 can be made of polyurethane. When the side insulating plate 323 is provided, force can be transmitted to the upper insulating plate 321, then transmitted to the side insulating plate 323 by the upper insulating plate 321, and then transmitted downwards by the side insulating plate 323.

As shown in fig. 2, the fixing module 1 provided by the present application further includes a second fixing component 12. The second fixing assembly 12 includes a screw 121, a bottom nut 122, a second elastic member 123, and a self-locking nut 124. The upper end of the screw 121 passes through the lower connector 112 and is connected with a self-locking nut 124 above the lower connector 112. The second elastic member 123 is disposed between the self-locking nut 124 and the lower connecting member 112 and is in a pre-compressed state, and an elastic force of the second elastic member 123 acts on the insulating layer 3, so that the insulating layer 3 is pressed on the base layer 2, and a pre-tightening effect is exerted on the insulating layer 3. The second elastic member 123 may employ a spring such as a belleville spring. The lower end of the screw 121 is connected to a bottom nut 122. In application, the screw 121 is inserted into the through hole penetrating up and down of the insulating filler 32, and the bottom nut 122 is located between the insulating filler 32 and the base layer 2.

When cold shrinkage deformation is caused by the change of the ambient temperature or other reasons, the insulating filling member 32 and the fixing module 1 are both deformed downwards by cold shrinkage, and the cold shrinkage deformation amount of the fixing module 1 is larger than that of the insulating filling member 32 under the influence of materials. Since the lower connection member 112 is a part of the insulation filler 32 or is connected to the insulation filler 32, the difference in cold-shrink deformation of the fixing module 1 and the insulation filler 32 may cause the distance between the self-locking nut 124 (a part of the fixing module 1) and the lower connection member 112 to be reduced, so that the second elastic member 123 is pressed, thereby compensating for the difference in cold-shrink deformation of the fixing module 1 and the insulation filler 32. If the difference in cold shrink deformation of the fixing module 1 and the insulation filler 32 is not compensated, the cold shrink deformed fixing module 1 may collapse the insulation filler 32, causing leakage.

According to the second fixing assembly 12 of the fixing module 1, the elastic bearing compensation is used for compensating the cold shrinkage deformation difference of the fixing module 1 and the insulation filling piece 32, so that the collapse risk of the insulation filling piece 32 is reduced.

In one embodiment, as shown in fig. 4 or 7, the second fixing assembly 12 further includes a nut seat 126, where the nut seat 126 is fixedly mounted on the foundation layer 2, and for a concrete foundation layer, a metal structure may be embedded therein, and the nut seat 126 may be welded on the metal structure.

The bottom nut 122 is mounted in a seat pocket of the nut seat 126 and is capable of axial tilting and radial displacement in the seat pocket. As shown in fig. 8, an upper limiting wall 1261 is provided above the seat chamber of the nut seat 126, and the hole diameter of the hole in the upper limiting wall 1261 of the nut seat 126 for inserting the screw 121 is larger than the inner diameter of the bottom nut 122. Side limiting walls 1262 are arranged around the nut seat 126, and the side limiting walls 1262 limit lateral movement and circumferential rotation of the nut. When assembled, the bottom nut 122 is tightened up against the upper retaining wall 1261 of the nut seat 126 under tension by the screw 121.

In the implementation process, the screw 121 and the bottom nut 122 may be not coaxial due to construction and installation errors, resulting in difficult installation. Let bottom nut 122 take place axial tilt and radial offset in the seat, once the condition of different axiss appears, bottom nut 122 can axial tilt and/or radial offset to coaxial with screw rod 121 to can reduce the installation degree of difficulty, promote installation effectiveness.

In one embodiment, as shown in fig. 8, a side opening 1263 is provided on one side of the nut seat 126 to allow the bottom nut 122 to be placed through the side opening 1263 so that quick replacement can be achieved once the bottom nut 122 is damaged.

In one embodiment, as shown in fig. 9, the upper end surface of the bottom nut 122 is an arc surface 1221, so that if a different axis occurs during the connection of the nut and the screw 121, the nut can automatically tilt axially under the guiding action of the arc surface 1221.

The above embodiments may be combined with each other without conflict.

Overall, the application has the following advantages:

(1) The first fixing assembly 11 of the fixing module 1 can compensate the downward deformation of the insulation box 31 caused by the downward movement of the upper structure 6, and the damage risk of the thin film shielding layer 4 is reduced.

(2) The second fixing assembly 12 of the fixing module 1 can compensate for the difference in cold shrinkage deformation of the fixing module 1 and the insulation filler 32, and the risk of collapse of the insulation filler 32 is reduced.

(3) The first fixing member 11 of the fixing module 1 exhibits elasticity when receiving a compressive force, thereby having the above-mentioned compensation function, and exhibits rigidity when receiving a tensile force, thereby enabling to secure the installation stability of the insulation layer 3, the film shielding layer 4 and the upper structure 5.

(4) The first fixing component 11 and the second fixing component 12 of the fixing module 1 can elastically deform downwards when bearing pressure, the lower pressure of the upper structure 6 is mainly borne by the insulation box 31, and the fixing module 1 only bears small lower pressure, so that the fixing module 1 is not easy to damage, and the requirement on the fixing module 1 is reduced, for example, the total cross-sectional area of the screw 121 of the fixing module 1 can be designed to be smaller (for example, one fixing module is provided with double screws, and one fixing module can be provided with only a single screw at present), and the reduction of the total cross-sectional area of the screw 121 of the fixing module 1 can reduce cold leakage.

(5) The bottom nut 122 of the fixed module 1 can be axially inclined and radially offset to adapt to certain construction and installation errors, so that the installation difficulty of the screw 121 is reduced, and the installation efficiency is improved.

(6) The bottom nut 122 of the fixed module 1 can be quickly replaced.

(7) The lateral and torsional forces of the superstructure 6 can be transmitted downwards through the insulating filler 32, so that the shearing force applied to the screws 121 of the fixing module 1 is reduced, and breakage is not easy.

The foregoing has outlined rather broadly the principles and embodiments of the present application in order that the detailed description of the application may be better understood, and in order that the present application may be better understood. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.

Claims

1. The fixing module of the low-temperature film storage container is characterized in that the fixing module (1) comprises an upper connecting piece (111), a lower connecting piece (112), a first elastic piece (113) and a limiting piece (114), wherein the upper connecting piece (111) can float up and down relative to the lower connecting piece (112), and the first elastic piece (113) is arranged between the upper connecting piece (111) and the lower connecting piece (112);

the limiting piece (114) is rigidly connected with the upper connecting piece (111) and can limit the floating limit of the upper connecting piece (111) by rigidly abutting against the lower connecting piece (112);

or, the limiting piece (114) is rigidly connected with the lower connecting piece (112) and can limit the floating limit of the upper connecting piece (111) by rigidly abutting the upper connecting piece (111);

under the application state, fixed module (1) is arranged in the tiling clearance of insulating case (31) of insulating layer (3) of low temperature film storage container, go up connecting piece (111) support film shielding layer (4) and superstructure (6) of low temperature film storage container, go up connecting piece (111) with low temperature film storage container's compress tightly module (7) and be connected, make compress tightly module (7) will superstructure (6), film shielding layer (4) and insulating case (31) are compressed tightly in proper order from top to bottom on low temperature film storage container's foundation layer (2).

2. The fixing module of a low-temperature film storage container according to claim 1, wherein the limiting member (114) comprises a guide shaft (1141) and a collision head (1142), the upper connecting member (111) or the lower connecting member (112) is provided with a guide hole, the guide hole cooperates with the guide shaft (1141) to guide the upper connecting member (111) to float up and down, the radial dimension of the collision head (1142) is larger than the aperture of the guide hole, and the collision head (1142) rigidly collides with the lower connecting member (112) or the upper connecting member (111) to limit the floating limit of the upper connecting member (111).

3. The module according to claim 2, wherein the upper connector (111) comprises an upper guide cylinder (1112), the lower connector (112) comprises a lower guide cylinder (1122), and the upper guide cylinder (1112) and the lower guide cylinder (1122) cooperate to guide the upper connector (111) to float up and down.

4. A fixing module of a low temperature film storage container according to claim 3, wherein the upper connector (111) comprises an upper connector board (1111), the upper connector board (1111) adopts a flat plate, and the flat plate supports a film shielding layer (4) of the low temperature film storage container;

or, the upper connecting piece (111) comprises an upper connecting plate (1111), the middle part of the upper connecting plate (1111) is convex upwards, the periphery of the upper connecting plate is concave downwards, the convex part of the middle part of the upper connecting plate (1111) is used for supporting the film shielding layer (4) of the low-temperature film storage container, the concave part of the periphery of the upper connecting plate (1111) is provided with an elastic part (115), and the elastic part (115) is used for supporting the film shielding layer (4) of the low-temperature film storage container.

5. The fixing module of a low temperature thin film storage container according to claim 4, wherein the lower connection member (112) comprises a lower connection plate (1121), the lower connection plate (1121) serving as an upper insulation plate (321) of an insulation filler (32) of the low temperature thin film storage container;

alternatively, the lower connection member (112) includes a lower connection plate (1121), and the lower connection plate (1121) is supported on an upper insulation plate (321) of an insulation filler (32) of the low-temperature thin film storage container.

6. The fixing module of a low temperature film storage container according to any one of claims 1 to 5, wherein the fixing module (1) comprises a screw (121), a bottom nut (122), a second elastic member (123) and a self-locking nut (124), an upper end of the screw (121) passes through the lower connecting member (112) and is connected with the self-locking nut (124) above the lower connecting member (112), the second elastic member (123) is disposed between the self-locking nut (124) and the lower connecting member (112), and a lower end of the screw (121) is connected with the bottom nut (122).

7. The fixing module of a low-temperature film storage container according to claim 6, wherein the fixing module (1) comprises a nut seat (126), the bottom nut (122) is installed in a seat cabin of the nut seat (126) and can be axially inclined and radially offset in the seat cabin, an upper limiting wall (1261) for limiting the bottom nut (122) is arranged above the seat cabin of the nut seat (126), and side limiting walls (1262) for limiting the bottom nut (122) are arranged around the seat cabin of the nut seat (126).

8. The securing module of a cryogenic film storage vessel as recited in claim 7, characterized in that at least one side of the nut seat (126) is provided with a side opening (1263) for taking and placing the bottom nut (122).

9. A low temperature film storage container, characterized in that the low temperature film storage container comprises a fixing module (1) according to any one of claims 1-8, a lower connecting piece (112) of the fixing module (1) is connected with an insulating filling piece (32) in a splicing gap of an insulating box (31) of an insulating layer (3) of the low temperature film storage container or is used as a part of the insulating filling piece (32), the low temperature film storage container further comprises a fixing pressing plate (5), a pressing module (7) of the low temperature film storage container presses the fixing pressing plate (5) downwards, and the fixing pressing plate (5) presses a superstructure (6), a film shielding layer (4) and the insulating box (31) of the low temperature film storage container on a base layer (2) of the low temperature film storage container sequentially from top to bottom.

10. The low-temperature thin film storage container according to claim 9, wherein the insulation filler (32) comprises an upper insulation plate (321), an insulation body (322) and a side insulation plate (323) fixed together, the material rigidity of the upper insulation plate (321) and the material rigidity of the side insulation plate (323) are both greater than the material rigidity of the insulation body (322), the side insulation plate (323) is disposed at the side of the insulation body (322), and the upper insulation plate (321) is pressed down against the side insulation plate (323).