CN217978333U - Dewar flask with novel bearing structure - Google Patents

Abstract

The utility model discloses a dewar bottle with novel bearing structure, including the outer container, locate the inside inner container of outer container, be located between outer container and the inner container and be used for being connected inner neck between them to and locate the buffering bearing structure between outer container and the inner neck, the utility model discloses a set up buffering bearing structure between outer container and inner neck, make the dewar bottle make inner neck obtain supporting and buffering in the transportation, neck structure in the protection, prevent to damage and take place to reveal.

Description

Dewar flask with novel bearing structure

[ technical field ] A method for producing a semiconductor device

The utility model relates to a dewar technical field especially relates to a dewar bottle with novel bearing structure.

[ background ] A method for producing a semiconductor device

Helium is a strategic national resource and has irreplaceable effects in the fields of national defense, high-tech industry, low-temperature refrigeration and the like, and liquid helium storage, transportation and split charging equipment is mainly in the form of a liquid helium dewar. The liquid helium dewar is widely used for storing, transporting and using liquid helium in the industries of scientific research, medical treatment, equipment manufacturing and the like, and is matched with a helium liquefier, a helium refrigerator, a BOG helium extraction and other large-scale engineering systems for use.

However, liquid helium is lost during storage, transportation and distribution of the liquid helium dewar, and particularly, the liquid helium dewar bears the bending force and the self weight of the liner due to shaking in the transportation process and the weight of full-load liquid helium in the standing process, so that the neck of the liquid helium dewar is very easy to damage and leak, and the liquid helium is lost.

[ Utility model ] content

In order to solve the problem that the neck supporting structure is easy to damage and reveal in the process of transporting the Dewar bottle, the utility model provides a Dewar bottle with a novel supporting structure.

The utility model discloses realized by following technical scheme:

a Dewar flask with novel support structure comprises an outer container, an inner container arranged inside the outer container, an inner neck part positioned between the outer container and the inner container and used for connecting the outer container and the inner neck part, and a buffer support structure arranged between the outer container and the inner neck part.

The Dewar flask with the novel supporting structure comprises a top cover plate and a corrugated pipe, wherein the top cover plate is sleeved on the outer side wall of the inner neck, and the corrugated pipe is sleeved on the outer side of the top cover plate and connected with the outer container.

The dewar bottle with the novel supporting structure comprises a retaining ring sleeved on the outer side of the inner neck and connected with the outer container, and a movable supporting piece sleeved on the outer side of the inner neck and supported between the top cover plate and the retaining ring.

According to the Dewar flask with the novel supporting structure, a multidirectional moving mechanism for enabling the inner container to swing in a multidirectional mode relative to the outer container is arranged between the movable supporting piece and the retaining ring.

The Dewar flask with the novel supporting structure is characterized in that the multidirectional moving mechanism comprises a convex arc surface arranged on the movable supporting piece and a concave arc surface arranged on the guard ring and tightly attached to the convex arc surface in a matched mode.

According to the Dewar flask with the novel supporting structure, the inner side wall of the retaining ring is provided with the slope surface which is inclined from top to bottom gradually towards the direction away from the inner neck.

The Dewar flask with the novel supporting structure is characterized in that an outer neck is arranged on the outer container and comprises a bottom cover, a top cover and an outer protective layer arranged between the bottom cover and the top cover and used for connecting the bottom cover and the top cover.

The Dewar flask with the novel supporting structure is characterized in that a vacuum cavity is formed by enclosing the bottom cover, the top cover, the outer protective layer and the inner neck, and the buffering supporting structure is located in the vacuum cavity.

According to the Dewar flask with the novel supporting structure, the upper end and the lower end of the corrugated pipe are annularly provided with the connecting fixing pieces.

The Dewar flask with the novel supporting structure comprises an upper fixing piece and a lower fixing piece, wherein the upper fixing piece is located at the upper end of the corrugated pipe and fixedly connected with the top cover plate, and the lower fixing piece is located at the lower end of the corrugated pipe and fixedly connected with the outer container.

Compared with the prior art, the utility model discloses there is following advantage:

the utility model provides a dewar bottle with novel bearing structure through set up buffering bearing structure between outer container and interior neck, makes the dewar bottle make in the transportation neck obtain supporting and buffering, neck structure in the protection, prevents to damage and takes place to reveal.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic sectional view of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

FIG. 3 is a schematic sectional view of the present invention;

FIG. 4 is an enlarged view of B in FIG. 3;

fig. 5 is a first exploded sectional structural view of the present invention;

FIG. 6 is an enlarged view of C in FIG. 5;

FIG. 7 is a schematic diagram of the exploded cross-sectional structure of the present invention;

fig. 8 is an enlarged view of D in fig. 7.

[ detailed description ] embodiments

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In a specific embodiment, as shown in fig. 1 to 8, a dewar with a novel supporting structure includes an outer container 1, an inner container 2 disposed inside the outer container 1, an inner neck portion 3 disposed between the outer container 1 and the inner container 2 and used for connecting the two, and a buffering supporting structure 4 disposed between the outer container 1 and the inner neck portion 3, wherein the buffering supporting structure 4 is used for supporting and buffering the inner neck portion 3 during transportation or standing of the dewar, protecting the structure of the inner neck portion 3, preventing the dewar from being damaged due to bending force and inner container dead weight caused by shaking during transportation, and preventing the dewar from being damaged and further leaking due to the weight of full-load liquid helium in the dewar during standing.

Further, the buffering support structure 4 includes a top cover plate 41 sleeved on the outer side wall of the inner neck portion 3, and a bellows 42 sleeved on the outer side of the top cover plate 41 and connected to the outer container 1, the buffering support structure 4 further includes a retaining ring 5 sleeved on the outer side of the inner neck portion 3 and connected to the outer container 1, and a movable support 43 sleeved on the outer side of the inner neck portion 3 and supported between the top cover plate 41 and the retaining ring 5, the bellows 42 is preferably a stainless steel bellows capable of absorbing bending force generated by shaking during transportation, so as to improve stability, the movable support 43 is preferably glass fiber reinforced plastic, the glass fiber reinforced plastic has a thermal conductivity of 0.4W/m-K, the stainless steel has a thermal conductivity of 11W/m-K, so as to further reduce heat leakage of the structure, the retaining ring 5 is preferably stainless steel and is adapted to movably cooperate with the movable support 43 to absorb pressure generated during transportation, so as to increase the overall strength and rigidity of the structure, the movable support 43 has a large contact area with the inner neck portion 3, so as to reduce the sudden tearing of the inner container 2 or the large deceleration and damage of the structure caused by the sudden generation of the vehicle during transportation.

And the length of the inner neck 3 is lengthened, so that the overall heat leakage of the inner container 2 is reduced; setting the heat conduction as Qcd, the material heat conduction coefficient as lambda, the heat conduction sectional area as F, the heat conduction effective length as L and the total area thermal resistance as sigma Ri, and obtaining a heat conduction formula:

Qcd＝∑λFΔT/L。

specifically, a multidirectional moving mechanism 6 for enabling the inner container 2 to swing in a multidirectional way relative to the outer container 1 is arranged between the movable supporting piece 43 and the retaining ring 5, so that conventional single-point stress is changed into multi-position stress, multi-direction external force of the equipment is further absorbed, and damage caused by excessive external force is prevented.

More specifically, the multidirectional moving mechanism 6 includes a convex arc surface 61 arranged on the moving support 43, and a concave arc surface 62 arranged on the guard ring 5 and tightly attached to the convex arc surface 61 in a matching manner, and the convex arc surface 61 tightly attached to the concave arc surface 62 increases the stress area, can bear multidirectional external force, and improves stability.

In addition, be equipped with from the top down gradually on the inside wall of retaining ring 5 and toward keeping away from the domatic 51 of interior neck 3's direction slope, domatic 51 is kept away from interior neck 3 is used for giving interior neck 3 sufficient displacement buffer space, prevents to collide the friction interior neck 3.

Moreover, an outer neck 7 is arranged on the outer container 1, the outer neck 7 comprises a bottom cover 71, a top cover 72 and an outer protection layer 73 arranged between the bottom cover 71 and the top cover 72 and used for connecting the bottom cover 71 and the top cover 72, and the outer protection layer 73 is preferably made of stainless steel, so that the strength and the rigidity of the whole structure are increased, and the buffer support structure 4 is protected.

Further, a vacuum chamber 74 is defined between the bottom cover 71, the top cover 72, the outer protective layer 73 and the inner neck 3, the buffer support structure 4 is located in the vacuum chamber 74, the vacuum chamber 74 is communicated with the vacuum chamber between the outer container 1 and the inner container 2, and the evaporation rate of the dewar is reduced due to the increased length of the inner neck 3, and the vacuum chamber 74 includes a vacuum inner chamber disposed inside the bellows 42 and a vacuum outer chamber disposed outside the bellows 42.

Furthermore, the upper end and the lower end of the corrugated pipe 42 are annularly provided with connecting and fixing parts 8 for connecting and fixing the corrugated pipe 42, so that the structure is simple, and the stability is improved.

Specifically, the connecting and fixing member 8 includes an upper fixing member 81 located at the upper end of the bellows 42 and fixedly connected to the top cover plate 41, and a lower fixing member 82 located at the lower end of the bellows 42 and fixedly connected to the outer container 1, and the upper fixing member 81 and the lower fixing member 82 are preferably rings made of stainless steel forging, so that the strength is improved, and the stability is increased.

The utility model also discloses a locate be used for the intercommunication on the retaining ring 5 vacuum cavity 74 with the intercommunicating pore 10 of outer container 1 inner chamber, and locate be used for fixing on the bottom 71 the ring channel 9 of retaining ring 5.

The working principle of the embodiment is as follows:

when the dewar bottle shakes during transportation, the inner container 2 deviates, the inner neck portion 3 extrudes or pulls the top cover plate 41, the top cover plate 41 extrudes or pulls the corrugated pipe 42 and transmits stress to the corrugated pipe 42, buffering is increased, meanwhile, the top cover plate 41 downward pushes the movable support piece 43, the outer side wall of the inner neck portion 3 pushes the movable support piece 43 and transmits the stress to the movable support piece 43, the movable support piece 43 transmits the stress to the guard ring 5 through the multi-direction butting mechanism 6, and the guard ring 5 is transmitted to the bottom cover 71, so that the stress is dispersed, and stability is improved.

The utility model discloses a dewar bottle with novel bearing structure, through outer container 1 with set up between the interior neck 3 buffering bearing structure 4 makes the dewar bottle make in the transportation interior neck 3 obtains supporting and buffering, protection interior neck 3 structure prevents to damage and takes place to reveal.

The above description is provided for an embodiment of the present invention, and the embodiments of the present invention are not limited to the above description, and are not limited to the above nomenclature or the english nomenclature since the trade nomenclature is different. All with the utility model discloses a method, structure etc. are similar, the same, or to the utility model discloses make a plurality of technological deductions or replacement under the design prerequisite, all should regard as the utility model discloses a protection scope.

Claims (10)

1. The utility model provides a dewar flask with novel bearing structure which characterized in that: the container comprises an outer container (1), an inner container (2) arranged inside the outer container (1), an inner neck (3) positioned between the outer container (1) and the inner container (2) and used for connecting the outer container and the inner neck, and a buffer support structure (4) arranged between the outer container (1) and the inner neck (3).

2. Dewar with novel support structure according to claim 1, characterised in that the buffer support structure (4) comprises a top cover plate (41) fitted over the outer side wall of the inner neck (3) and a bellows (42) fitted over the outer side of the top cover plate (41) and connected to the outer container (1).

3. Dewar with novel support structure according to claim 2, characterised in that the buffer support structure (4) further comprises a retaining ring (5) fitted outside the inner neck (3) and connected to the outer container (1), and a mobile support (43) fitted outside the inner neck (3) and supported between the top cover plate (41) and the retaining ring (5).

4. Dewar with new support structure, according to claim 3, characterised in that between the mobile support (43) and the guard ring (5) there is a multidirectional mobile mechanism (6) for the multidirectional oscillation of the inner container (2) with respect to the outer container (1).

5. Dewar flask with new support structure according to claim 4, characterised in that the multidirectional moving mechanism (6) comprises a convex arc surface (61) on the movable support (43) and a concave arc surface (62) on the guard ring (5) and fitted tightly with the convex arc surface (61).

6. The Dewar flask with the novel supporting structure in accordance with claim 3, characterized in that the inner side wall of the guard ring (5) is provided with a slope (51) which gradually slopes from top to bottom in a direction away from the inner neck (3).

7. Dewar with novel support structure according to claim 1, characterised in that an outer neck (7) is provided on the outer container (1), the outer neck (7) comprising a bottom cover (71), a top cover (72) and an outer protective layer (73) provided between the bottom cover (71) and the top cover (72) for connecting the two.

8. Dewar with novel support structure according to claim 7, characterised in that between the bottom cover (71), the top cover (72), the outer protective layer (73), the inner neck (3) is enclosed to form a vacuum chamber (74), the buffer support structure (4) being located inside the vacuum chamber (74).

9. The Dewar flask with the new support structure in claim 2, characterized by the fact that the bellows (42) is provided with connecting fixtures (8) around the upper and lower ends.

10. Dewar with novel support structure according to claim 9, characterised in that the connection fixture (8) comprises an upper fixture (81) located at the upper end of the bellows (42) and fixedly connected to the top cover plate (41), and a lower fixture (82) located at the lower end of the bellows (42) and fixedly connected to the outer container (1).

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