CN210595275U

CN210595275U - Connecting structure of outer liner and inner liner for liquid helium dewar

Info

Publication number: CN210595275U
Application number: CN201921548733.3U
Authority: CN
Inventors: 朱海龙; 郑洁斌; 甄沛权; 刘稳果
Original assignee: Sinoscience Fullcryo Zhongshan Low Temperature Equipment Manufacturing Co Ltd
Current assignee: Sinoscience Fullcryo Zhongshan Low Temperature Equipment Manufacturing Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-05-22
Anticipated expiration: 2029-09-17

Abstract

The application discloses connection structure of outer courage and inner bag for liquid helium dewar includes: the outer container is internally provided with a first inner cavity, the top of the outer container is protruded upwards to form a convex cavity, and the center of the top surface of the convex cavity is provided with an outer container connecting hole; the inner container is internally provided with a second inner cavity for storing liquid helium, the center of the top of the inner container is provided with an inner container neck pipe communicated with the second inner cavity, and the inner container neck pipe passes through the outer container connecting hole and is fixedly connected with the outer container at the outer container connecting hole so as to support the inner container to be suspended and contained in the first inner cavity; and the connecting assembly is internally connected with the liner neck pipe above the convex cavity to be fixed at the connecting hole of the outer liner, so that the first inner cavity can be detachably sealed, the connecting assembly is provided with a neck cavity communicated with the second inner cavity and a helium conveying pipeline capable of inserting into the liner neck pipe to convey liquid helium to the second inner cavity, and the side wall of the neck cavity is communicated with a plurality of connecting pipelines provided with control valves. This application realizes the high-efficient effect of liquid helium pipeline or test piece simple and convenient insertion liquid helium storage tank, and consumption when effectively reducing liquid helium distribution improves liquid helium and stores and transport efficiency.

Description

Connecting structure of outer liner and inner liner for liquid helium dewar

Technical Field

The utility model relates to a technical field in the aspect of the liquid helium dewar especially relates to a connection structure of outer courage and inner bag for liquid helium dewar.

Background

Helium on earth is generated by the decay of α which is basically from radioactive elements, the generated helium is mined from underground rare gas ores, the mass of helium atoms is small, the helium atoms are easy to escape from the gravity of the earth to escape to the space of the universe, so that the storage capacity of the helium on earth is not high, and the helium is an expensive and scarce nonrenewable resource.

The traditional liquid helium dewar has the defects of poor thermal shock elimination effect, small volume and heavy tank body quality, a liquid helium pipeline or a test piece is inserted into a liquid helium storage tank, the structure is complicated, and the reactive power consumption of liquid helium during distribution is high, so that the liquid helium is not beneficial to storage and transportation.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

The utility model aims at providing a connection structure of outer courage and inner bag for liquid helium dewar has solved traditional liquid helium dewar thermal shock and has swung the defect that the elimination effect is poor, the volume is little, jar body quality is heavy, eliminates the thermal shock and swings, realizes the high-efficient effect that liquid helium pipeline or test piece simply conveniently inserted the liquid helium storage tank, effectively reduces the consumption of liquid helium when the distribution, improves the storage and the conveying efficiency of liquid helium.

(II) technical scheme

In order to achieve the above object, the utility model discloses a following technical scheme is in order to provide a connection structure of outer courage and inner bag for liquid helium dewar, include:

the inner container is internally provided with a first inner cavity, the top of the inner container is protruded upwards to form a convex cavity, and the center of the top surface of the convex cavity is provided with an inner container connecting hole;

the inner container is internally provided with a second inner cavity for storing liquid helium, the center of the top of the inner container is provided with an inner container neck pipe communicated with the second inner cavity, and the inner container neck pipe passes through the outer container connecting hole and is fixedly connected with the outer container at the outer container connecting hole so as to support the inner container to be contained in the first inner cavity in a hanging manner;

the connecting assembly is internally connected with the inner container neck pipe above the convex cavity to be fixed at the connecting hole of the outer container, so that the first inner cavity is detachably sealed, the connecting assembly is provided with a neck cavity communicated with the second inner cavity and a helium conveying pipeline capable of being inserted into the inner container neck pipe to convey liquid helium to the second inner cavity, and the side wall of the neck cavity is communicated with a plurality of connecting pipelines provided with control valves.

Further, the connection assembly includes:

the outer liner neck tube is fixedly connected above the convex cavity to hermetically isolate the first inner cavity, and the neck cavity which can be internally connected with the inner liner neck tube is arranged in the outer liner neck tube;

and the blind plugging assembly is provided with the helium conveying pipeline and is detachably arranged on the outer container neck pipe, so that the helium conveying pipeline penetrates through the neck cavity and is inserted into the inner container neck pipe to seal the neck cavity.

Further, the connection assembly further includes:

the middle piece is arranged at the outer liner connecting hole and fixedly connected with the inner liner neck pipe and the outer liner neck pipe, and is internally connected with the inner liner neck pipe and abutted to the bottom of the outer liner neck pipe, so that the first inner cavity is sealed and isolated.

Furthermore, the middle piece is connected with the outer liner, the inner liner neck tube and the outer liner neck tube in a welding mode.

Further, the blind plug assembly comprises:

the top cover is detachably arranged at the top of the blind plugging component to cover the helium conveying pipeline;

and the sealing connecting piece is arranged below the top cover, sleeved outside the helium conveying pipeline and clamped on the top surface of the neck pipe of the outer liner to seal the neck cavity.

Further, the blind plugging assembly further comprises:

an on-off valve disposed between the top cover and the seal connection.

Furthermore, reinforcing parts are attached to the periphery of the outer container connecting hole and the periphery of the connecting part of the inner container and the inner container neck tube.

Furthermore, each connecting pipeline is provided with at least one control valve, and each control valve is provided with at least one handle.

Further, the distance from the outer container connecting hole to the joint of the inner container and the inner container neck tube is 510 mm.

Further, the diameter interval between the outer wall of the first inner cavity and the inner wall of the second inner cavity is 100 mm.

(III) advantageous effects

The above technical scheme of the utility model has following profitable technological effect: the inner container and the outer container are arranged in the outer container, the inner container is internally provided with a second inner cavity for storing liquid helium, the center of the top of the inner container is provided with an inner container neck tube communicated with the second inner cavity, the inner container neck tube penetrates through an outer container connecting hole and is fixedly connected with the outer container at the outer container connecting hole to support the inner container to be suspended and accommodated in the first inner cavity, so that an inner container and outer container arrangement structure capable of eliminating thermal shock is realized, a larger helium storage volume is realized under the same surface area, and the defects of poor thermal shock eliminating effect, small volume and heavy tank body quality of the traditional liquid helium Dewar are overcome; adopt coupling assembling inscription inner bag neck pipe in protruding chamber top in order to fix outer courage connecting hole department, thereby the sealed first inner chamber of detachably, coupling assembling is equipped with the neck chamber of intercommunication second inner chamber and can inserts the defeated helium pipeline that carries out liquid helium to the second inner chamber in the inner bag neck pipe, neck chamber lateral wall intercommunication is equipped with a plurality of connecting tubes of control valve, realize the high-efficient effect of liquid helium pipeline or test piece simple and convenient insertion liquid helium storage tank, effectively reduce the consumption of liquid helium when the distribution, improve the storage and the conveying efficiency of liquid helium. The novel multifunctional electric heating cooker has the characteristics of simple structure, ingenious design, stability, reliability, environmental protection, high efficiency, economy, practicality and simplicity in use.

Drawings

Fig. 1 is a schematic structural view of a connection structure of an outer liner and an inner liner for a liquid helium dewar according to an embodiment of the present invention;

FIG. 2 is an interior perspective view of FIG. 1;

FIG. 3 is a schematic view of the exploded structure of FIG. 1;

fig. 4 is a schematic structural diagram of a connecting assembly according to an embodiment of the present invention;

fig. 5 is a schematic view of an installation structure of the connection assembly in an embodiment of the present invention;

fig. 6 is another exploded view of the connecting assembly according to an embodiment of the present invention;

fig. 7 is a schematic structural view of an outer liner neck tube according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a blind plug assembly in an embodiment of the present invention.

Reference numerals:

outer courage 1, first inner chamber 11, protruding chamber 12, outer courage connecting hole 13, inner bag 2, second inner chamber 21, inner bag neck pipe 22, coupling assembling 3, outer courage neck pipe 31, neck chamber 311, connecting tube 312, blind stifled subassembly 32, defeated helium pipeline 321, top cap 322, sealing connection 323, ooff valve 324, intermediate part 33, control valve 4, reinforcement 5, clamp 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation and the positional relationship are based on the orientation or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not to be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The technical solution and the advantages of the present invention will be more clear and clear by further describing the embodiments of the present invention with reference to the drawings of the specification. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.

The traditional liquid helium dewar has the defects of poor thermal shock elimination effect, small volume and heavy tank body quality, a liquid helium pipeline or a test piece is inserted into a liquid helium storage tank, the structure is complicated, and the reactive power consumption of liquid helium during distribution is high, so that the liquid helium is not beneficial to storage and transportation. Therefore, the utility model provides a connection structure of outer courage and inner bag for liquid helium dewar to solved traditional liquid helium dewar thermal shock and swung the defect that the elimination effect is poor, the volume is little, jar body quality is heavy, eliminated the thermal shock and swung, realized the high-efficient effect that liquid helium pipeline or test piece simply conveniently inserted the liquid helium storage tank, effectively reduced the consumption of liquid helium when the distribution, improved the storage and the conveying efficiency of liquid helium.

As shown in fig. 1-8, the present invention discloses a connection structure of an outer liner and an inner liner for a liquid helium dewar, which comprises an outer liner 1, an inner liner 2 and a connection assembly 3, specifically, a first inner chamber 11 is arranged in the outer liner 1, the first inner chamber 11 is used for accommodating the inner liner 2, a convex cavity 12 is formed at the top of the outer liner 1, and an outer liner connection hole 13 is formed at the center of the top surface of the convex cavity 12; a second inner cavity 21 used for storing liquid helium is arranged in the inner container 2, an inner container neck tube 22 communicated with the second inner cavity 21 is arranged at the center of the top of the inner container 2, the inner container neck tube 22 penetrates through the outer container connecting hole 13 and is fixedly connected to the outer container 1 at the outer container connecting hole 13 to support the inner container 2 to be suspended and accommodated in the first inner cavity 11, wherein the outer container 1 and the inner container 2 are made of 304 stainless steel, the size of the neck of the Dewar is larger by arranging the convex cavity 12, the heat oscillation elimination effect is realized while the standard liquid helium pipeline is allowed to be inserted, and the superconducting electrode test and the test needing to insert a test piece or immerse liquid helium are facilitated; a connecting assembly 3 detachably sets up and connects outer courage 1 and inner bag 2 in protruding chamber 12 top, it is concrete, as shown in fig. 1, 2, 3, 5, 6, connecting assembly 3 fixes and inscribes inner bag neck pipe 22 in outer courage connecting hole 13 department, thereby detachably seals first inner chamber 11, as shown in fig. 4, connecting assembly 3 is equipped with the neck chamber 311 of intercommunication second inner chamber 21 and can inserts the defeated helium pipeline 321 that carries out liquid helium transport to second inner chamber 21 in the inner bag neck pipe 22, the intercommunication has a plurality of connecting tube 312 on the neck chamber 311 lateral wall, the multi-manifold design is easily dismantled and is changed, can set up control valve 4 on each connecting tube 312 and carry out the control and the control of corresponding function to the dewar stock solution, eliminate liquid nitrogen intermediate layer helium circulation pipeline in order to realize making this product need not conventional maintenance, greatly reduced the maintenance cost.

As shown in fig. 4, in some embodiments, the coupling assembly of the present invention includes an outer bladder neck 31 and a blind assembly 32. Specifically, as shown in fig. 2, 3, 5 and 6, an outer liner neck tube 31 is fixedly connected above the convex cavity 12 to hermetically isolate the first inner cavity 11, and a neck cavity 311 capable of internally connecting the inner liner neck tube 22 is arranged in the outer liner neck tube 31; a blind plug assembly 32 is provided with a pair of helium pipelines 321, the blind plug assembly 32 is detachably mounted on the top of the outer liner neck tube 31, so that the insertion and sealing of a liquid helium pipeline are facilitated, the helium pipelines 321 penetrate through the neck cavity 311 to be inserted into the inner liner neck tube 22, and the neck cavity 311 is closed, so that the loss of liquid helium during storage, transportation and distribution is reduced to the maximum extent, and the storage and transportation efficiency of the liquid helium is improved.

As shown in fig. 4, preferably, in some optional embodiments, the connection assembly 3 of the present invention further includes an intermediate member 33, specifically, as shown in fig. 3, 5 and 6, the intermediate member 33 is disposed at the liner connection hole 13 and fixedly connected to the liner neck 22 and the outer liner neck 31, so as to connect the liner neck 22 to the bottom of the outer liner neck 31, thereby sealing and isolating the first inner cavity 11.

Preferably, in an optional embodiment of the present invention, the middle part 33 is welded to the outer liner 1, the inner liner neck tube 22, and the outer liner neck tube 31. In other embodiments, the connection between the intermediate piece 33 and the outer bladder 1, the inner bladder neck 22 and the outer bladder neck 31 may be other connection methods besides welding.

In some alternative embodiments, as shown in fig. 8, the blind plug assembly 32 includes a cap 322 and a sealing connector 323, and in particular, as shown in fig. 5, a cap 322 is detachably disposed on the top of the blind plug assembly 32 to cover the helium pipeline 321, so as to facilitate the insertion and sealing of the liquid helium pipeline; a sealing connector 323 is arranged below the top cover 322, sleeved outside the helium conveying pipeline 321 and hooped on the top surface of the outer gallbladder neck pipe 31 through a hoop 6 to seal the neck cavity 311. Further, in some embodiments, the blind assembly 32 further comprises an on-off valve 324, the on-off valve 324 being disposed between the top cover 322 and the sealing connector 323, the on-off valve 324 being provided with a handle 325 for easy pulling and securing.

As shown in fig. 3 and 5, in some embodiments, a reinforcing member 5 is disposed at the connection hole 13 of the outer liner and at the connection between the inner liner 2 and the neck tube 22 of the inner liner, and the reinforcing member 5 can effectively improve the fixing structure of the outer liner 1 and the inner liner 2. Specifically, the top of the outer liner 1 is covered with a reinforcement 5 around the outer liner connecting hole 13, and the periphery of the connecting part of the inner liner 2 and the inner liner neck tube 22 is also covered with a reinforcement 5.

As shown in fig. 7, in some optional embodiments of the present invention, at least one control valve 4 is disposed on each connection pipe 312, a handle may be disposed on each control valve 4 for pulling and fixing, and the control valve 4 includes a liquid guiding valve, a gas releasing valve, an isolation valve, a safety valve, or a pressure control valve.

In some optional embodiments of the present invention, the distance from the outer liner connecting hole 13 to the joint of the inner liner 2 and the inner liner neck tube 22 is 510 mm. In these embodiments, it is preferred that the diametrical separation between the outer wall of the first lumen and the inner wall of the second lumen is 100 mm. The utility model discloses an outer courage and inner bag connection structure are equipped with the many cold shielding structure of vapor cooling in through the inner bag, combine outer courage to adopt super insulation material, realize the low liquid helium evaporation rate of liquid helium dewar, effectively avoid the liquid nitrogen precooling, and the cooling is faster, efficiency is higher.

To sum up, the utility model discloses an above-mentioned embodiment aims at protecting the connection structure of outer courage and inner bag for liquid helium dewar, the setting can be eliminated the thermal shock and swing the interior outer courage structure, realize bigger helium storage volume under the same surface area, it swings the elimination effect poor to have solved traditional liquid helium dewar thermal shock, the volume is little, the heavy defect of jar body quality, eliminate making this product of liquid nitrogen intermediate layer helium circulation pipeline need not conventional maintenance, realize the high-efficient effect of liquid helium pipeline or test piece simple and convenient insertion liquid helium storage tank, effectively reduce the consumption of liquid helium when the distribution, improve the storage and the conveying efficiency of liquid helium. The novel multifunctional electric heating cooker has the characteristics of simple structure, ingenious design, stability, reliability, environmental protection, high efficiency, economy, practicality and simplicity in use.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A connection structure of outer container and inner container for liquid helium dewar, characterized by includes:

2. The structure for connecting an outer tank and an inner tank for a liquid helium dewar according to claim 1, wherein the connecting assembly comprises:

3. The structure for connecting an outer tank and an inner tank for a liquid helium dewar according to claim 2, wherein the connecting assembly further comprises:

4. The structure for connecting an outer tank and an inner tank for a liquid helium dewar according to claim 3, wherein: the middle piece is connected with the outer liner, the inner liner neck tube and the outer liner neck tube in a welding manner.

5. The connection structure of an outer liner and an inner liner of a liquid helium dewar according to claim 2, 3 or 4, wherein the blind plugging assembly comprises:

6. The structure for connecting an outer liner and an inner liner of a liquid helium dewar according to claim 5, wherein the blind plugging assembly further comprises:

an on-off valve disposed between the top cover and the seal connection.

7. The structure for connecting an outer tank and an inner tank of a liquid helium dewar as claimed in any one of claims 1 to 4 and 6, wherein: the periphery of the outer container connecting hole and the periphery of the connecting part of the inner container and the inner container neck tube are respectively coated with a reinforcing piece in a fitting manner.

8. The structure for connecting an outer tank and an inner tank for a liquid helium dewar according to claim 7, wherein: each connecting pipeline is provided with at least one control valve, and each control valve is provided with at least one handle.

9. The structure for connecting an outer tank and an inner tank for a liquid helium dewar according to claim 8, wherein: the distance from the outer container connecting hole to the joint of the inner container and the inner container neck tube is 510 mm.

10. The structure for connecting an outer tank and an inner tank for a liquid helium dewar according to claim 9, wherein: the diameter interval between the outer wall of the first inner cavity and the inner wall of the second inner cavity is 100 mm.