CN218094783U - Vacuum flange for liquid hydrogen vacuum tube - Google Patents
Vacuum flange for liquid hydrogen vacuum tube Download PDFInfo
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- CN218094783U CN218094783U CN202221046612.0U CN202221046612U CN218094783U CN 218094783 U CN218094783 U CN 218094783U CN 202221046612 U CN202221046612 U CN 202221046612U CN 218094783 U CN218094783 U CN 218094783U
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Abstract
The utility model discloses a vacuum flange for liquid hydrogen vacuum tube, which comprises a groove surface vacuum joint and a tenon surface vacuum joint, which are respectively arranged on the opposite end surfaces of two vacuum tubes to be connected, wherein the groove surface vacuum joint comprises a groove surface outer joint ring and a groove surface inner joint ring, the tenon surface vacuum joint comprises a tenon surface flange, a tenon surface outer joint ring and a tenon surface inner joint ring, and the groove surface outer joint ring is connected with the tenon surface outer joint ring in a laminating way; the groove surface inner joint ring and the tenon surface inner joint ring are oppositely arranged and are in adaptive connection, the vacuum flange is further provided with a heat bridge pipeline, an O-shaped sealing ring is arranged on the tenon surface outer joint ring, and an inner sealing ring is arranged in a groove of the groove surface inner joint ring. The utility model discloses when realizing inner seal and external seal, reduced the influence of inside and outside difference in temperature heat exchange to the transport medium.
Description
Technical Field
The utility model relates to a vacuum flange device technical field for liquid hydrogen vacuum tube, in particular to vacuum flange for liquid hydrogen vacuum tube.
Background
Liquid hydrogen is used as the currently important high-energy low-temperature liquid clean fuel, has high energy conversion rate and good fuel economy, so that the liquid hydrogen is widely applied to various fields as the clean energy along with the aggravation of energy and environmental problems.
The liquid hydrogen is obtained by liquefying hydrogen through high pressure and temperature reduction, has high requirements on storage and transportation, needs to be kept in a low-temperature state, and is generally transported through a vacuum tube.
Because heat exchange can not be avoided in the conveying process, in the prior art, the heat exchange between the inner pipe and the outer pipe in the conveying process is reduced through the design on the vacuum pipeline in the conveying process, and further the loss of a hydrogen energy source in the conveying process is avoided.
In the prior art, generally, a structure of a vacuum flange is designed, so that a vacuum layer space still exists between an inner pipe and an outer pipe at a joint to reduce heat transfer, for example, patent application document 201220228259.8, a vacuum cavity formed by a left vacuum sleeve, a left flange vacuum sleeve and a left through pipe and a vacuum cavity formed by a right vacuum sleeve, a right flange vacuum sleeve and a right through pipe are used for carrying out heat insulation and heat preservation on low-temperature liquid in a pipeline, and the structure mainly reduces a non-vacuum contact area caused by connection, and has requirements on the end face of a liquid hydrogen vacuum pipe conveying pipeline and safety problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a vacuum flange for liquid hydrogen vacuum tube, by groove face vacuum joint and tenon face vacuum joint component, be used for the tip position of two sections liquid hydrogen vacuum tubes respectively, tenon face flange is the loop formula, convenient on-the-spot installation adjustment, outer (hot) seal adopts radial static seal mode, the inner seal circle adopts axial static seal examination, after groove face vacuum joint and tenon face vacuum joint of vacuum flange for liquid hydrogen vacuum tube connect the assembly, seal and use axial seal as the owner, radial seal is assisted, prevent the leakage of transport medium, and the heat conduction of air; the liquid hydrogen conveying pipeline has the advantages that the influence of internal and external temperature difference heat exchange on a conveying medium and the space limitation of field installation are reduced while internal (cold) sealing and external (hot) sealing are realized, a heat conducting path can be lengthened, heat leakage is reduced, the gasification of liquid hydrogen is reduced, and the problems of various requirements on the end face of the liquid hydrogen conveying pipeline and safety and reliability are effectively solved.
The utility model discloses a technical scheme be: the vacuum flange comprises a groove surface vacuum joint and a tenon surface vacuum joint, the groove surface vacuum joint and the tenon surface vacuum joint are respectively arranged on the opposite end surfaces of two vacuum pipes to be connected, the groove surface vacuum joint comprises a groove surface outer joint ring and a groove surface inner joint ring, and the tenon surface vacuum joint comprises a tenon surface flange, a tenon surface outer joint ring and a tenon surface inner joint ring;
the outer joint ring of the groove surface is connected with the outer joint ring of the tenon surface in an attaching mode, the joint is of a staggered right-angle structure, and the tenon surface flange is arranged on the outer side of the outer joint ring of the tenon surface and is opposite to the outer joint ring of the groove surface;
the groove surface inner joint ring is arranged opposite to the tenon surface inner joint ring, a groove is formed in one side of the groove surface inner joint ring, which is opposite to the tenon surface inner joint ring, and a bulge matched with the shape structure of the groove is formed in the tenon surface inner joint ring;
thermal bridge pipelines are arranged between the tenon surface inner joint ring and the tenon surface outer joint ring of the tenon surface vacuum joint and between the groove surface inner joint ring and the groove surface outer joint ring of the groove surface vacuum joint.
Furthermore, tenon face vacuum joint still includes O type sealing washer, O type sealing washer sets up in the slot of tenon face outer joint ring, with the slot face outer joint ring carries out radial seal.
Further, the groove surface vacuum joint further comprises an inner sealing ring, and the inner sealing ring is arranged in the groove of the groove surface inner connecting ring.
Furthermore, the end of the thermal bridge pipeline is provided with a thermal bridge connecting ring.
Further, the groove and the protrusion are of a right-angle structure.
Furthermore, a plurality of bolt holes which are arranged oppositely are respectively arranged on the tenon surface flange and the outer ring of the groove surface, and the groove surface vacuum joint and the tenon surface vacuum joint are fixedly connected through bolts.
The utility model has the advantages that:
1. the vacuum flange for the liquid hydrogen vacuum tube consists of a groove surface vacuum joint and a tenon surface vacuum joint, and is respectively used for the end positions of two sections of liquid hydrogen vacuum tubes, the groove surface inner connecting ring, the groove surface outer connecting ring and the tenon surface outer connecting ring are butted to form a sealing structure, a plurality of bolt holes which are arranged oppositely are respectively arranged on the tenon surface flange and the groove surface outer connecting ring, the vacuum flange is fixedly connected onto the liquid hydrogen vacuum tube through bolts, the vacuum flange is also provided with a heat bridge pipeline, the heat bridge component is not needed to be used through the vacuum flange to reduce heat energy transmission, the requirement limitation of using the heat bridge component on the end surface of the vacuum tube is met, the tenon surface flange is of a movable sleeve type, the structure is simple and exquisite, the field installation and adjustment are convenient, and the stability of the vacuum flange structure is ensured while the installation and the disassembly are convenient.
2. An O-shaped sealing ring is arranged on the outer joint ring of the tenon surface, an inner sealing ring is arranged on the inner joint ring of the groove surface, the O-shaped sealing ring is placed in a groove of the outer joint ring of the tenon surface to carry out radial sealing with the outer joint ring of the groove surface, and the inner sealing ring is placed in a groove of the inner joint ring of the groove surface to carry out axial sealing with the inner joint ring of the tenon surface. When the liquid hydrogen vacuum tube is connected and assembled by the groove surface vacuum joint and the tenon surface vacuum joint of the vacuum flange, the axial sealing is used as the main sealing, the radial sealing is used as the auxiliary sealing, and a closed air sealing space is formed between the O-shaped sealing ring and the inner sealing ring, so that the heat conduction after air heat exchange is reduced, and the heat exchange of materials realizes the balance of cold and heat exchange through a heat bridge structure when media are conveyed.
Drawings
FIG. 1 is a schematic view of the overall structure of a vacuum flange according to the present invention;
FIG. 2 is a schematic view of a tenon vacuum joint of the present invention;
fig. 3 is a schematic view of the structure of the groove vacuum joint of the present invention.
Description of reference numerals: 1-inner pipe, 2-groove surface vacuum joint, 3-tenon surface vacuum joint, 4-outer pipe, 5-O-shaped sealing ring, 6-tenon surface flange, 7-tenon surface outer joint ring, 8-tenon surface inner joint ring, 9-heat bridge pipeline, 10-heat bridge joint ring, 11-groove surface outer joint ring, 12-groove surface inner joint ring and 13-inner sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Embodiment 1 of the utility model provides a vacuum flange for liquid hydrogen vacuum tube, as shown in fig. 1, the tip position at two sections liquid hydrogen vacuum tubes of the same structure is established to vacuum flange, connects, seals fixedly to liquid hydrogen vacuum tube, and liquid hydrogen vacuum tube includes that inner tube and outer tube, inner tube and outer tube are coaxial, is equipped with the vacuum intermediate layer between and.
Specifically, the vacuum flange for the liquid hydrogen vacuum tube consists of a groove surface vacuum joint and a tenon surface vacuum joint;
as shown in fig. 2, the vacuum joint includes a tenon flange, a tenon outer joint ring, a thermal bridge pipe, a thermal bridge joint ring, and a tenon inner joint ring;
as shown in fig. 3, the vacuum connection includes an external connection ring, a thermal bridge pipe, a thermal bridge connection ring, and an internal connection ring.
After the groove surface vacuum joint and the tenon surface vacuum joint are assembled on the liquid hydrogen vacuum tube, the tenon surface flange and the groove surface outer connecting ring are respectively provided with a plurality of bolt holes which are oppositely arranged on the part outside the tube, and the groove surface vacuum joint and the tenon surface vacuum joint are fixedly connected through bolts.
The tenon face flange is a loop type and is arranged on the outer side of the tenon face outer connecting ring and is opposite to the groove face outer connecting ring, so that the tenon face flange is convenient to install and adjust on site.
The vacuum flange adopts an outer (heat) sealing mode and a radial static sealing mode.
The groove face outer joint ring with the joint laminating of the outer joint ring of tenon face is connected, and crisscross right angle structure about the junction is, in this embodiment promptly, in the junction, groove face outer joint ring is convex right angle structure, tenon outer joint ring is the right angle structure of indent, the structure of junction, the outer joint ring of groove face is outside, including tenon outer joint ring, in this embodiment, this laminating junction, horizontal laminating department with the outer tube is in same horizontal plane.
The groove surface inner joint ring and the tenon surface inner joint ring are arranged oppositely, one side of the groove surface inner joint ring, which is opposite to the tenon surface inner joint ring, is provided with a groove, the tenon surface inner joint ring is provided with a bulge matched with the shape structure of the groove, and when the vacuum flange is assembled and connected, butt joint sealing is realized through the bulge and the groove; in the embodiment, during assembly, the tenon surface inner joint ring and the groove surface inner joint ring are positioned outside an inner pipe of the liquid hydrogen vacuum pipe;
in this embodiment, the recess with the arch is the right angle structure, promptly recess and arch are quadrangle right angle framework, and the butt joint laminating of being convenient for strengthens the leakproofness.
The thermal bridge pipelines are arranged between the tenon surface inner joint ring and the tenon surface outer joint ring of the tenon surface vacuum joint and between the groove surface inner joint ring and the groove surface outer joint ring of the groove surface vacuum joint;
the thermal bridge pipelines are oppositely arranged and positioned on the same horizontal plane, the heat conduction path is prolonged through the thermal bridge pipelines, the generation of heat leakage and liquid hydrogen gasification is reduced, namely after the vacuum flange is assembled, the tenon inner joint ring is in butt joint with the groove surface inner joint ring, the tenon outer joint ring is in butt joint with the groove surface outer joint ring, and the thermal bridge pipelines positioned on the same horizontal plane are formed between the connecting structures formed by the butt joint of the two parts;
in this embodiment, a thermal bridge connecting ring is arranged at the end of the thermal bridge pipeline.
Example 2
As shown in fig. 2, in this embodiment, the tenon vacuum joint further includes an O-ring, and the O-ring is disposed in the groove of the tenon outer ring, and radially seals the groove outer ring.
Example 3
Embodiment 3 of the utility model provides a vacuum flange for liquid hydrogen vacuum tube, the specific structure of vacuum flange is shown based on above-mentioned embodiment 2, and repeated the repeated description is no longer repeated here.
In this embodiment, as shown in fig. 3, the vacuum coupling further includes an inner sealing ring disposed in the groove of the groove face inner joint ring.
When the liquid hydrogen vacuum tube is installed on site by using the vacuum flange, the O-shaped sealing ring and the inner sealing ring are firstly placed in the corresponding sealing groove of the vacuum joint and then are fixedly connected through the fastening piece, and a closed air sealing space is formed between the O-shaped sealing ring and the inner sealing ring, so that the heat conduction after air heat exchange is reduced.
The inner sealing ring adopts axial static sealing test and is axially sealed with the tenon surface inner sealing ring, when the liquid hydrogen vacuum tube is connected and assembled by the groove surface vacuum joint and the tenon surface vacuum joint of the vacuum flange, the axial sealing is used as the main sealing, the radial sealing is used as the auxiliary sealing, and the leakage of a conveying medium and the heat conduction of air are prevented.
When the medium is conveyed, the heat exchange of the material realizes the balance of cold and heat exchange through a thermal bridge structure. The cold energy of the liquid hydrogen is transferred outwards through the inner connecting ring and the hot bridge pipe, the heat energy generated at normal temperature is transferred inwards through the outer connecting ring and the hot bridge pipe, and the cold and heat exchange is balanced at the hot bridge part, so that the conveying is met, and the gasification phenomenon of the liquid hydrogen is reduced.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or direct or indirect applications in other related technical fields, are included in the patent protection scope of the present invention.
Claims (6)
1. The vacuum flange for the liquid hydrogen vacuum tube is characterized by comprising a groove surface vacuum joint and a tenon surface vacuum joint, wherein the groove surface vacuum joint and the tenon surface vacuum joint are respectively arranged on opposite end surfaces of two vacuum tubes to be connected, the groove surface vacuum joint comprises a groove surface outer connecting ring and a groove surface inner connecting ring, and the tenon surface vacuum joint comprises a tenon surface flange, a tenon surface outer connecting ring and a tenon surface inner connecting ring;
the outer joint ring of the rabbet surface is in fit connection with the outer joint ring of the rabbet surface, the joint is in a staggered right-angle structure, and the rabbet surface flange is arranged on the outer side of the outer joint ring of the rabbet surface and is opposite to the outer joint ring of the rabbet surface;
the groove surface inner joint ring and the tenon surface inner joint ring are arranged oppositely, one side of the groove surface inner joint ring, which is opposite to the tenon surface inner joint ring, is provided with a groove, and the tenon surface inner joint ring is provided with a bulge matched with the shape structure of the groove;
thermal bridge pipelines are arranged between the tenon surface inner joint ring and the tenon surface outer joint ring of the tenon surface vacuum joint and between the groove surface inner joint ring and the groove surface outer joint ring of the groove surface vacuum joint.
2. The vacuum flange for a liquid hydrogen vacuum tube of claim 1, wherein the dovetail vacuum joint further comprises an O-ring disposed in a groove of the dovetail outer joint ring for radially sealing with the groove outer joint ring.
3. The vacuum flange for a liquid hydrogen vacuum tube of claim 2, wherein the groove face vacuum connection further comprises an inner sealing ring disposed within the groove of the groove face nipple.
4. The vacuum flange for a liquid hydrogen vacuum tube according to claim 3, wherein the groove and the protrusion have a right-angled structure.
5. The vacuum flange for a liquid hydrogen vacuum pipe according to claim 1, wherein the thermal bridge pipeline is provided with thermal bridge rings at both ends.
6. The vacuum flange for the liquid hydrogen vacuum pipe according to any one of claims 1 to 5, wherein a plurality of bolt holes are respectively formed on the tenon surface flange and the groove surface outer ring, and the groove surface vacuum joint and the tenon surface vacuum joint are fixedly connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221046612.0U CN218094783U (en) | 2022-05-05 | 2022-05-05 | Vacuum flange for liquid hydrogen vacuum tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221046612.0U CN218094783U (en) | 2022-05-05 | 2022-05-05 | Vacuum flange for liquid hydrogen vacuum tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218094783U true CN218094783U (en) | 2022-12-20 |
Family
ID=84460344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221046612.0U Active CN218094783U (en) | 2022-05-05 | 2022-05-05 | Vacuum flange for liquid hydrogen vacuum tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218094783U (en) |
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2022
- 2022-05-05 CN CN202221046612.0U patent/CN218094783U/en active Active
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