CN112722586A

CN112722586A - Vacuum tank

Info

Publication number: CN112722586A
Application number: CN202110045700.2A
Authority: CN
Inventors: 高峰; 刘在祥; 陈艳凤; 蔡园丰; 王兵; 牛争艳
Original assignee: Shanghai Xingye Material Technology Co Ltd
Current assignee: Shanghai Xingye Material Technology Co Ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-04-30
Anticipated expiration: 2041-01-14
Also published as: CN112722586B

Abstract

The application relates to a vacuum tank, including: the shell is arranged in the inner container in the shell, and the vacuum heat insulation cavity is formed between the shell and the inner container; and a support ring supported on the inner periphery of the shell is arranged in the vacuum heat insulation cavity. The vacuum tank that this application provided can flourishing water of large capacity to stable heat preservation performance has.

Description

Vacuum tank

Technical Field

The application relates to a tank, in particular to a vacuum tank with heat insulation and heat preservation.

Background

The vacuum tank mainly comprises a shell, an inner container and a vacuum heat insulation cavity formed between the shell and the inner container, and has excellent heat insulation performance. However, the volume of the traditional vacuum tank is generally smaller because the shell of the large-volume vacuum tank is very large in size, and when the shell is too large in size, the shell is very easy to inwards recess and deform after being stressed, so that the shell is attached to and contacted with the inner container, and the heat preservation capacity of the tank is reduced.

Disclosure of Invention

The technical problem that this application will solve is: in view of the above problems, a vacuum tank is proposed, which can hold water in a large capacity and has a stable heat-insulating property.

The technical scheme of the application is as follows:

a vacuum canister, comprising:

the outer shell is provided with a plurality of grooves,

an inner container disposed within the outer shell, an

A vacuum heat insulation cavity formed between the shell and the inner container;

and a support ring supported on the inner periphery of the shell is arranged in the vacuum heat insulation cavity.

On the basis of the technical scheme, the application also comprises the following preferable scheme:

the shell is a revolving body, and the supporting ring is a circular ring arranged coaxially with the revolving body.

The supporting ring is integrally provided with an annular supporting ring reinforcing rib which is positioned on the inner periphery of the supporting ring and is coaxially arranged with the supporting ring.

The bracing ring reinforcing rib is through right the extrusion that the bracing ring extrusion process formed is protruding, the bellied periphery of extrusion is formed with the extrusion annular.

The supporting ring and the supporting ring reinforcing ribs are integrally formed by die casting.

The support rings are at least three, and each support ring is arranged from the inner bottom of the shell to the inner top of the shell in sequence and closely along the axis direction of the shell.

The support rings are at least two and are arranged at intervals along the axial direction of the shell.

Extrusion processing has on the conch wall of shell with the body of revolution is coaxial to be arranged, and the extrusion bulge loop of radial evagination, the inner periphery of extrusion bulge loop is formed with the extrusion annular, prop the ring inlay in the extrusion annular.

The vacuum tank is characterized in that a ring sleeve is arranged in a tank opening in the top of the vacuum tank, flanging holes which are turned upwards are respectively formed in the top of the shell and the top of the inner container, and the flanging of the flanging hole in the shell and the flanging of the flanging hole in the inner container are respectively welded and fixed with the ring sleeve.

The top of the shell and the top of the inner container are respectively provided with flanging holes turned upwards, and the flanging of the flanging hole in the shell and the flanging of the flanging hole in the inner container are respectively welded and fixed with the ring sleeve.

The beneficial effect of this application:

1. this application has arranged the support in the interior circumference of shell in the thermal-insulated chamber of vacuum to prop the shell when shell radial indent, promoted the anti deformability of shell, make shell and inner bag remain certain interval throughout, avoid the two to contact each other and quick heat conduction, and then make the vacuum tank have permanent stable thermal insulation performance, the thickness of shell need not great moreover.

2. The shell adopts a revolving body structure, and the supporting ring is a circular ring structure coaxially arranged with the shell, so that the shell and the supporting ring are convenient to manufacture and install, and the pressure born by each part of the shell and the supporting ring is ensured to be as uniform and consistent as possible.

3. The support ring is made of heat-treated spring steel and has strong pressure-bearing and deformation-resisting capabilities.

4. Compared with the outer wall of a large-size vacuum tank, the support ring with small axial size is easy to process, and can obtain high roundness even after heat treatment, so that the support ring has outstanding pressure bearing capacity.

5. The supporting ring is integrally provided with an annular reinforcing rib, so that the pressure bearing capacity of the supporting ring is further improved.

6. The support ring is provided with a plurality of support rings, the support rings are sequentially arranged from the inner bottom of the shell to the inner top of the shell along the axis direction of the shell, the peripheral shell mainly plays a role in positioning and sealing, and the support ring on the inner side is a main bearing part, so that the shell can be very thin and the shell can be conveniently machined and molded.

7. The extrusion convex ring that radial evagination was processed in the extrusion on the conch wall of vacuum tank shell, prop the ring and inlay in the extrusion annular of extrusion convex ring internal periphery to utilize this extrusion annular to inject the position of propping the ring, when preventing to prop the ring activity, the extrusion annular structure has still further promoted the radial pressure-bearing capacity of shell.

8. The top of the shell and the top of the inner container are respectively provided with flanging holes which are turned upwards, and the flanging of the flanging hole on the shell and the flanging of the flanging hole on the inner container are respectively welded and fixed with the ring sleeve at the position of the tank opening, so that the implementation is convenient.

9. The heat insulation support piece which is supported between the shell and the inner container and is positioned at the outer bottom of the inner container is arranged in the vacuum heat insulation cavity, so that the heat insulation capacity of the tank cannot be obviously weakened, the weight of the inner container and the water stored in the inner container is mainly applied to the bottom of the shell, the bottom of the shell is usually prevented from being arranged on supports such as the ground in practical application, and the risk of collapse and deformation of the top of the shell due to overlarge stress is eliminated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description only relate to some embodiments of the present application and are not limiting on the present application.

Fig. 1 is a front view of a vacuum tank according to a first embodiment of the present disclosure.

FIG. 2 is a cross-sectional view of a vacuum tank according to an embodiment of the present invention.

Fig. 3 is an enlarged view of the X1 portion of fig. 2.

Fig. 4 is an enlarged view of the X2 portion of fig. 2.

Fig. 5 is an enlarged view of the X3 portion of fig. 2.

FIG. 6 is a front view of a vacuum vessel according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a vacuum vessel according to a second embodiment of the present invention.

Fig. 8 is an enlarged view of the X4 portion of fig. 7.

FIG. 9 is a sectional view of a vacuum vessel according to a third embodiment of the present invention.

Fig. 10 is an enlarged view of the X5 portion of fig. 9.

Fig. 11 is a schematic perspective view of a third support ring according to an embodiment of the present application.

Fig. 12 is a schematic perspective view of a hoop in the third embodiment of the present application.

Fig. 13 is a sectional view of a vacuum tank in the fourth embodiment of the present application.

Fig. 14 is an enlarged view of the X6 portion of fig. 13.

Fig. 15 is a schematic perspective view of a support ring in the fourth embodiment of the present application.

FIG. 16 is a perspective view of a hoop in accordance with an embodiment of the present invention.

Wherein:

1-outer shell, 2-inner container, 3-vacuum heat insulation cavity, 4-hoop, 5-heat insulation support, 6-tank opening, 7-ring sleeve, 8-support ring, 401-hoop reinforcing rib, 801-support ring reinforcing rib and 802-extrusion ring groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of the present application do not denote a limitation of quantity, but rather denote the presence of at least one.

In the description of the present specification and claims, the terms "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

Specific embodiments of the present application will now be described with reference to the accompanying drawings.

The first embodiment is as follows:

fig. 1-5 illustrate one specific embodiment of the vacuum canister of the present application, including some of the conventional vacuum canisters: the vacuum heat insulation device comprises a shell 1, an inner container 2 arranged in the shell, and a vacuum heat insulation cavity 3 formed between the shell and the inner container. The top of the vacuum tank is provided with a tank opening 6 with a small diameter, and the shell 1 and the inner container 2 are made of stainless steel.

If the vacuum tank is a large-capacity water tank, the outer case 1 is large in size. Then the shell 1 is extremely easy to be inwards sunken and deformed under the action of external force (the inner side of the shell 1 is in a negative pressure environment) so as to lead the shell 1 to be attached and contacted with the inner container 2 in a large area, thus the heat is rapidly transferred between the inner container and the shell and the heat-insulating property of the tank is reduced. Although the increase in the thickness of the outer shell 1 can solve the above problems well, it brings with it various problems such as a large amount of materials, high manufacturing cost, heavy and difficult movement of the can body, and the like. In addition, when a large-sized housing is manufactured, if the housing is subjected to heat treatment to improve the structural strength, the roundness of the housing is inevitably deteriorated, and the pressure-bearing capacity of the finally molded housing 1 is weakened.

In view of this, the present embodiment abandons the solution of increasing the thickness of the outer shell 1, and arranges a support ring supported on the inner circumference of the outer shell 1 in the vacuum insulation chamber 3 to support the outer shell when the outer shell 1 is radially recessed, so as to improve the deformation resistance of the outer shell.

In order to facilitate the manufacture and installation of the shell 1 and the supporting ring 8 and ensure that the pressure borne by each part of the shell 1 and the supporting ring 8 is as uniform and consistent as possible, the shell 1 in the embodiment adopts a revolving body structure similar to a cylinder, and the supporting ring 8 adopts a circular ring structure coaxially arranged with the revolving body.

If only one support ring 8 is provided, the housing portion remote from the support ring 8 still has the problem of poor pressure-bearing capacity. Based on this, in the present embodiment, a plurality of support rings 8 are provided at the inner periphery of the housing 1, and the support rings 8 are arranged at intervals along the axial direction of the housing 1 (i.e., the height direction of the tank in fig. 2).

The support ring 8 is also a ring made of spring steel, and has extremely strong pressure-bearing and deformation-resistant capabilities. To prevent the hinge ring 8 from being detached from the housing 1, the hinge ring 8 can be adhesively secured to the housing 1 by means of an adhesive.

As shown in fig. 4, in the present embodiment, the inner container 2 is fixedly connected to the outer shell 1 at the tank opening 5 at the top of the vacuum tank. Specifically, a ring sleeve 7 is arranged in a tank opening 6 at the top of the vacuum tank, and the outer shell 1 and the inner container 2 are fixedly connected with the ring sleeve 7 respectively.

Furthermore, flanging holes which are flanged upwards are respectively arranged at the top of the shell 1 and the top of the liner 2, and the flanging of the flanging hole on the shell 1 and the flanging of the flanging hole on the liner 2 are respectively welded and fixed with the ring sleeve 7.

Of course, the ring sleeve 7 can be eliminated, and the outer shell 1 and the inner container 2 can be directly welded and fixed at the tank opening 6.

If the weight of the inner container 2 and the water stored in the inner container is applied to the position of the tank opening at the top of the vacuum tank, the top of the shell 1 is easy to collapse and deform. Based on this, in the present embodiment, the thermal insulation support 5 is disposed in the vacuum thermal insulation cavity 3 and supported between the outer shell 1 and the inner container 2 and located at the outer bottom of the inner container 2, so as to mainly support the inner container 2 and the weight of the water stored inside the inner container by the bottom of the outer shell 1, as shown in fig. 5.

In addition, we can also set up the thermal-insulated support piece that supports between shell 1 and inner bag 2 in the vacuum heat-insulating chamber 3 of inner bag 2 side wall, can promote the water pressure resistance ability of inner bag 2 on the one hand, and on the other hand can avoid inner bag 2 lateral deviation to lean on with the shell internal wall face and contact.

When the temperature of the inner container 2 is higher or the pressure inside the inner container is higher, radial deformation expanding outwards is generated, and the periphery of the inner container 2 is a low-pressure vacuum environment. If the expansion deformation is too large, the inner container 2 is attached to the outer shell 1 in a large area, so that heat is rapidly transferred between the inner container and the outer shell, and the heat insulation performance of the vacuum tank is remarkably reduced. Furthermore, if the inner container 2 is subjected to high internal pressure for a long period of time, there is a risk that the inner container 2 is broken due to fatigue deformation.

Therefore, in the embodiment, the hoop 4 located in the vacuum heat insulation cavity 3 is fixedly sleeved on the periphery of the inner container 2 so as to hoop the inner container 2 when the inner container is radially expanded outwards, so that the pressure resistance of the inner container 2 is improved, and the outward expansion deformation of the inner container 2 is reduced.

In order to make the outward expansion pressure borne by each part of the inner container 2 and the hoop 4 as uniform as possible and further improve the deformation resistance of the inner container, the inner container 2 adopts a revolving body structure similar to a cylinder, and the hoop 4 adopts a circular ring structure coaxially arranged with the revolving body.

If only one hoop 4 is arranged, the part of the liner 2 far away from the hoop 4 still has the problems of poor pressure bearing capacity and easy fatigue deformation. In view of this, a plurality of hoops 4 are provided around the inner container 2, and the hoops 4 are arranged at intervals along the axial direction of the inner container 2 (i.e. the height direction of the can in fig. 2).

The hoop 4 is also a ring made of spring steel and has strong pressure resistance and deformation resistance. During manufacturing, in order to improve the structural strength of the hoop 4 and the supporting ring 8, the hoop 4 and the supporting ring 8 made of spring steel can be subjected to heat treatment.

To prevent the hoop 4 from being detached from the inner container 2, the hoop 4 may be fixed to the inner container 2 by adhesion.

If the outer shell 1 of the vacuum tank is directly exposed to the environment for use, not only is the outer shell 1 vulnerable to the damage of foreign objects, but also (a small amount of) heat radiated from the inner container 2 to the outer shell 1 is rapidly dissipated to the environment. In addition, a protective outer cover which is covered on the periphery of the shell 1 can be arranged, and polyurethane thermal insulation materials are filled between the protective outer cover and the shell.

Although the vacuum heat-insulating structure has excellent heat-insulating performance, the problem of heat radiation loss still exists, so that a heat radiation-proof coating can be coated on the outer surface of the inner container 2 or/and the inner surface of the shell 1. Since it is difficult to apply the thermal radiation protection coating on the outer surface of the inner container or the inner surface of the outer shell, we can also apply the thermal radiation protection coating on the inner surface of the inner container or the outer surface of the outer shell.

Example two:

fig. 6 to 8 show a second embodiment of the vacuum tank of the present application, which has substantially the same structure as the first embodiment, with two main differences:

in the present embodiment, a first pressing convex ring 101 is pressed on the wall of the housing 1, and is coaxially arranged with the rotor housing and protrudes radially outward. The first extrusion protrusion ring 101 is formed by mechanically extruding the housing 1, and after the first extrusion protrusion ring 101 is extruded, an extrusion ring groove is naturally formed in the inner periphery of the first extrusion protrusion ring 101, and the bail 8 is inserted into the extrusion ring groove, so that the position of the bail 8 is defined by the extrusion ring groove.

In this embodiment, a second extrusion convex ring 201 which is coaxially arranged with the revolving body shell and is inwardly protruded in the radial direction is extruded on the liner wall of the liner 2, an extrusion ring groove is also formed on the periphery of the second extrusion convex ring 201, and the hoop 4 is embedded in the extrusion ring groove on the periphery of the second extrusion convex ring, so that the position of the hoop 4 is defined by using the extrusion ring groove.

And the extrusion convex rings arranged on the shell 1 and the inner container 2 can improve the radial pressure bearing capacity of the shell 1 and the inner container 2.

Example three:

fig. 9 shows a third embodiment of the vacuum tank of the present application, which has substantially the same structure as the first embodiment, with the main differences:

in this embodiment, the brace ring 8 is integrally provided with a brace ring rib 801 located on the inner periphery of the brace ring and coaxially arranged with the brace ring, as shown in fig. 10 and 11. Compared with the bracing ring in the first embodiment, the bracing ring 8 with the bracing ring reinforcing ribs 801 on the inner periphery has higher pressure bearing capacity.

In this embodiment, the hoop reinforcement 801 is a pressing projection formed by pressing the hoop 8, and a pressing ring groove 802 is formed on the outer periphery of the pressing projection. In order to fix the supporting ring 8 in the housing 1, an extruding convex ring protruding inward in the radial direction may be extruded on the wall of the housing 1, and after the assembling is completed, the extruding convex ring is embedded in the extruding ring groove 802 to fix the position of the supporting ring 8.

Moreover, the hinge rings 8 of the present embodiment are provided in plural, each hinge ring 8 having a larger axial dimension than that of the first embodiment, and the hinge rings 8 are arranged next to each other in the axial direction of the housing 1 from the inner bottom of the housing toward the inner top of the housing. The supporting rings 8 which are arranged close to each other are wrapped and positioned by the shell 1, the peripheral shell 1 mainly plays a role in sealing and positioning the supporting rings, and the supporting ring 8 on the inner side is a main bearing part, so that the shell 1 can be very thin and is convenient to machine and form.

In order to improve the pressure bearing capacity of the outer hoop 4 of the liner 2, in the embodiment, an annular hoop reinforcing rib 401 which is located on the outer periphery of the hoop and is coaxially arranged with the hoop is integrally arranged on the hoop 4, as shown in fig. 10 and 12. The hoop reinforcement 401 is a pressing protrusion formed by pressing the hoop 4, and a pressing ring groove is formed on the inner circumference of the pressing protrusion.

Example four:

fig. 13 shows a fourth embodiment of the vacuum tank of the present application, which has substantially the same structure as the third embodiment, with the main differences:

in this embodiment, the hoop reinforcement 801 of the hoop 8 is not an extrusion protrusion with a ring groove on the back side, but a ring rib directly formed on the inner periphery of the hoop 8 when the hoop is die-cast, as shown in fig. 14 and 15.

The hoop reinforcement 401 on the hoop 4 is no longer a rear-side extruded projection with a circumferential groove, but rather a circumferential rib formed directly on the outer circumference of the hoop 4 during the injection molding thereof, as shown in fig. 14 and 16.

Claims

1. A vacuum canister, comprising:

a shell (1) is arranged on the outer side of the shell,

an inner container (2) arranged in the outer casing, and

a vacuum heat insulation cavity (3) formed between the shell and the inner container;

characterized in that a support ring (8) supported on the inner periphery of the shell (1) is arranged in the vacuum heat insulation cavity (3).

2. Vacuum tank, according to claim 1, characterized in that said housing (1) is a body of revolution and said brace ring (8) is a circular ring arranged coaxially with said body of revolution.

3. Vacuum tank, according to claim 2, characterized in that the brace ring (8) is provided integrally with a brace ring stiffener (801) located on the inner circumference of the brace ring and arranged coaxially with the brace ring.

4. The vacuum tank as claimed in claim 3, wherein the stay ring rib (801) is an extrusion protrusion formed by extrusion processing of the stay ring (8), and an extrusion ring groove (802) is formed on an outer periphery of the extrusion protrusion.

5. Vacuum tank, according to claim 3, characterized in that the brace ring (8) and the brace ring stiffener (801) are integrally die cast.

6. Vacuum tank according to claim 2, characterized in that the rings (8) are provided in at least three and that the rings (8) are arranged next to each other in the axial direction of the housing (1) from the inner bottom of the housing (1) to the inner top of the housing (1).

7. Vacuum tank, according to claim 2, characterized in that said brace rings (8) are provided in at least two and are arranged at intervals along the axial direction of said shell (1).

8. The vacuum tank as claimed in claim 2, characterized in that the wall of the housing (1) is extruded with an extrusion collar (101) which is arranged coaxially with the rotor and protrudes radially outward, the inner periphery of the extrusion collar (101) is formed with an extrusion ring groove, and the brace ring (8) is embedded in the extrusion ring groove.

9. Vacuum tank, according to claim 1, characterized in that in said vacuum insulation chamber (3) there is arranged an insulation support (5) supported between said outer shell (1) and said inner container (2).

10. The vacuum tank as claimed in claim 1, wherein a ring sleeve (7) is arranged in the tank opening (6) at the top of the vacuum tank, the top of the outer shell (1) and the top of the inner container (2) are respectively provided with flanging holes which are flanged upwards, and the flanging holes of the outer shell (1) and the flanging holes of the inner container (2) are respectively welded and fixed with the ring sleeve (7).