CN214946957U - Multichannel inner tube bearing structure - Google Patents
Multichannel inner tube bearing structure Download PDFInfo
- Publication number
- CN214946957U CN214946957U CN202120594256.5U CN202120594256U CN214946957U CN 214946957 U CN214946957 U CN 214946957U CN 202120594256 U CN202120594256 U CN 202120594256U CN 214946957 U CN214946957 U CN 214946957U
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- plate
- supporting plate
- pipe
- holes
- inner tube
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- 230000008093 supporting effect Effects 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/22—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals
Abstract
The utility model discloses a multi-channel inner tube supporting structure, which comprises a supporting plate and a connecting piece; the supporting plate is of a similar circular structure with a line passing through the center as a symmetrical line and two notches symmetrically arranged at two ends respectively; the supporting plate vertically penetrates through main pipe through holes with axes on four notch symmetrical lines; two first secondary pipe holes which are communicated up and down are also formed in the supporting plate; the two first secondary pipe holes are symmetrical relative to the symmetrical line of the four notches; and the first secondary pipe hole is positioned at one end of the support plate; two second auxiliary pipe holes are formed in the supporting plate; the two second secondary orifices are symmetrical about the line of symmetry of the four notches; the second auxiliary pipes are respectively adjacent to the first auxiliary pipe holes and arranged outside the two first auxiliary pipe holes; the other end of the supporting plate is provided with a cooling pipe avoidance position; a connecting piece for connecting the cold screen is fixed at the edge of the notch of the supporting plate; the utility model discloses, it is effectual to support, reduces the system and leaks heat.
Description
Technical Field
The utility model relates to a pipeline supports technical field, specifically is a multichannel inner tube bearing structure.
Background
The large scientific apparatus relates to the field of low temperature superconduction, and is used as a key device for low temperature superconduction low temperature fluid medium transmission, namely a multi-channel low temperature transmission pipeline: the vacuum outer tube forms a plurality of temperature zones/the transmission of different fluid media and has the advantages of low heat leakage: similar to the cable resistance, the greater the power transmission loss, in other words, the greater the heat leakage of the multi-channel itself, and the lower the effective transmission efficiency of the pipeline. The heat leakage of the multi-channel pipeline is about 20 percent of that of a common single channel, and the multi-channel pipeline has obvious cryogenic fluid conveying advantages. The same cold transmission is higher than the space utilization rate of a single pipeline, the occupied space of equipment is greatly saved, and the external layout is more compact through national-road integrated processing.
The inner pipe assembly is a general name for integrating low-temperature processes of different temperature zones and different media. The inner tube is fixed through an inner tube support machine type, and meanwhile, the inner tube support supporting points are arranged on the inner wall of the multi-channel cold screen and finally transmit load to the vacuum outer tube through the cold screen support. The multi-channel inner pipe is generally low-temperature fluid, the temperature of a cold screen of a channel with more temperature is much lower, and the physical properties of fluid media transmitted in different channels of the multi-channel are different, so that the inner pipe is fixed at the same time for reducing the heat leakage of the system, and the general multi-channel inner pipe has the characteristics of bottom heat transfer performance, high strength and bottom cold shrinkage coefficient. Because of the final equipment with the cold screen of multichannel inner tube, cold screen self need have the cooling tube to cool down, this has the position tolerance requirement just requiring between inner tube pipeline and the cold screen cooling tube. Conventionally, the end part of the cold shield assembly and the inner pipe are fixed, and the action tolerance between the cold shield cooling pipe and the inner pipe assembly pipeline is controlled within the range required by a drawing.
But has the following disadvantages: the fixed point moment arm is too long, easily causes the system unstability: the fixed point is over-large in torsion, so that the fixed point is easy to be unstable; and (3) increasing heat leakage of the system: the connection and fixation among different temperature areas will increase the heat leakage of the system; the structure is complicated: the fixed structure between the cold shield and the inner pipe is increased, the complexity of a pipeline system is caused, the assembly work is increased, and the requirement on the assembly tolerance of the system is improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: the multi-channel inner pipe supporting structure with poor supporting effect is provided.
In order to solve the technical problem, the utility model provides a following technical scheme: a multi-channel inner tube supporting structure comprises a supporting plate and a connecting piece; the supporting plate is of a similar circular structure with a line passing through the center as a symmetrical line and two notches symmetrically arranged at two ends respectively; the supporting plate vertically penetrates through main pipe through holes with axes on four notch symmetrical lines; two first secondary pipe holes which are communicated up and down are also formed in the supporting plate; the two first secondary pipe holes are symmetrical relative to the symmetrical line of the four notches; and the first secondary pipe hole is positioned at one end of the support plate; two second auxiliary pipe holes are formed in the supporting plate; the two second secondary orifices are symmetrical about the line of symmetry of the four notches; the second auxiliary pipes are respectively adjacent to the first auxiliary pipe holes and arranged outside the two first auxiliary pipe holes; the other end of the supporting plate is provided with a cooling pipe avoidance position; and a connecting piece for connecting the cold screen is fixed at the edge of the notch of the supporting plate.
After the integral position of the supporting plate is positioned, the main pipe, the first auxiliary pipe and the second auxiliary pipe respectively correspondingly penetrate through the main pipe through hole, the first auxiliary pipe hole and the second auxiliary pipe hole in the supporting plate; the position of the end part of the cooling pipe of the cold shield is not required to be fixed with the position of each pipeline, so that the cantilever stress of the fixed point between the cold shield and each pipeline is effectively avoided; all pipelines are connected by using a multi-channel inner pipe supporting structure, and the cold shield and each pipeline do not need to be independently fixed, so that the supporting effect is good; the heat leakage of the system is reduced, the system structure is simpler, the assembly difficulty is reduced, and the assembly time is saved.
Preferably, the connecting piece comprises a C-shaped clamp, a locking piece, a base plate assembly and a universal ball; the C-shaped clamp is clamped on the edge of the notch of the supporting plate; a base plate assembly is arranged between the upper end and the lower end of the C-shaped clamp and the upper end surface and the lower end surface of the edge of the notch of the supporting plate; the upper end and the lower end of the C-shaped clamp are respectively fixed on the supporting plate through locking pieces; and a universal ball is fixed on the outward side of the C-shaped clamp.
Preferably, the C-shaped clamp comprises a side plate, a top plate and a bottom plate; the top plate and the bottom plate are respectively arranged above and below the supporting plate; the top plate and the bottom plate are arranged in parallel, and the starting ends of the top plate and the bottom plate are positioned on the same vertical line; the base plate assembly comprises an upper gasket and a lower gasket; an upper gasket is arranged between the top plate and the top surface of the supporting plate; and a lower gasket is arranged between the bottom plate and the bottom surface of the supporting plate.
Preferably, the locking member comprises an upper lock cylinder and a lower lock cylinder; the upper lock column penetrates through the top plate, and the bottom of the upper lock column is abutted to the upper gasket; the upper lock column is matched with the top plate through threads; the lower lock cylinder penetrates through the bottom plate, and the top end of the lower lock cylinder is abutted against the lower gasket; the lower lock cylinder is matched with the bottom plate through threads.
Preferably, the universal ball comprises a connecting column and a semicircular bulge; the connecting column is fixed at the center of the outward side of the side plate; a semicircular bulge is integrally formed on the vertical surface of the connecting column; the distance between the semicircular bulge and the center of the support plate is larger than the distance between the farthest edge of the support plate and the center of the support plate.
Preferably, the supporting plate is further provided with a plurality of first lightening holes, second lightening holes and third lightening holes; the first lightening holes are distributed in an annular band shape around the periphery of the main pipe through hole; the second lightening holes are distributed in an annular band shape around the periphery of the first secondary pipe hole; and the third lightening holes are distributed in an annular band shape around the periphery of the second secondary pipe hole.
Preferably, the inner wall of the main pipe through hole extends towards the center of the main pipe through hole to form a first bulge; the inner wall of the first secondary pipe hole extends towards the center to form a second bulge; the inner wall of the second secondary pipe hole extends towards the center to form a third bulge.
Preferably, the center of the main pipe through hole is offset to the connecting member compared to the center of the support plate.
Firstly, welding a cooling pipe and a cold shield (not shown), aligning the avoiding position of the cooling pipe with the position of the cooling pipe, pushing a support plate downwards to enable a semicircular bulge to slide on the cold shield, removing the pushing force after the support plate reaches a preset position, and firmly propping against the inner wall of the cold shield under the elastic action of the semicircular bulge; the installation mode of the channel inner pipe supporting structure is quick and convenient; then after the integral position of the supporting plate is positioned, the main pipe, the first auxiliary pipe and the second auxiliary pipe correspondingly penetrate through the main pipe through hole, the first auxiliary pipe hole and the second auxiliary pipe hole in the supporting plate respectively; the position of the end part of the cooling pipe of the cold shield is not required to be fixed with the position of each pipeline, so that the cantilever stress of the fixed point between the cold shield and each pipeline is effectively avoided; all pipelines are connected by using a multi-channel inner pipe supporting structure, and the cold shield and each pipeline do not need to be independently fixed, so that the supporting effect is good; the heat leakage of the system is reduced, the system structure is simpler, the assembly difficulty is reduced, and the assembly time is saved; after the pipes are installed, an external vacuum pipe (not shown) is sleeved outside the cold shield.
Compared with the prior art, the beneficial effects of the utility model are that:
A. the position of the end part of the cooling pipe of the cold shield is not required to be fixed with the position of each pipeline, so that the cantilever stress of the fixed point between the cold shield and each pipeline is effectively avoided; all pipelines are connected by using a multi-channel inner pipe supporting structure, and the cold shield and each pipeline do not need to be independently fixed, so that the supporting effect is good; the heat leakage of the system is reduced, the system structure is simpler, the assembly difficulty is reduced, and the assembly time is saved;
B. support the cold shield inner wall through the semicircle arch, come the position of location backup pad, the operation is convenient fast.
Drawings
FIG. 1 is a schematic axial view of the multi-channel inner tube support structure of the present invention;
FIG. 2 is an enlarged view of the area A of FIG. 1 according to the present invention;
FIG. 3 is a top view of the multi-channel inner tube support structure of the present invention;
FIG. 4 is a view of the multi-channel inner tube support structure of the present invention;
fig. 5 is an enlarged view of the area B in fig. 4 according to the present invention.
Reference numerals: 1. a support plate; 2. a main pipe through hole; 21. a first lightening hole; 22. a first protrusion; 2a, a main pipe; 3. a first secondary tube aperture; 31. a second lightening hole; 32. a second protrusion; 3a, a first auxiliary pipe; 4. a second secondary tube hole; 41. a third lightening hole; 42. a third protrusion; 4a, a second auxiliary pipe; 5. a connecting member; 51. a C-shaped clamp; 511. a side plate; 512. a top plate; 513. a base plate; 52. a locking member; 521. locking the column; 522. a lower lock cylinder; 53. a backing plate assembly; 531. an upper gasket; 532. a lower gasket; 54. a universal ball; 541. connecting columns; 542. a semicircular bulge; 6. the cooling pipe avoids the position.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention by those skilled in the art, the technical solutions of the present invention will now be further described with reference to the drawings attached to the specification.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1 and 3, the present embodiment discloses a multi-channel inner tube supporting structure, which includes a supporting plate 1 and a connecting member 5. The supporting plate 1 is of a similar circular structure with a line passing through the center as a symmetrical line and two notches symmetrically arranged at two ends respectively. The supporting plate 1 penetrates through a main pipe through hole 2 with the axis on four notch symmetry lines up and down. The center of the main pipe through hole 2 is offset to the connecting member 5 compared to the center of the support plate 1. Two first secondary pipe holes 3 which are vertically communicated are also formed in the supporting plate 1. The two first secondary duct apertures 3 are symmetrical with respect to the line of symmetry of the four recesses. And the first secondary duct aperture 3 is located at one end of the support plate 1. Two second auxiliary pipe holes 4 are further formed in the supporting plate 1. The two second secondary duct apertures 4 are symmetrical about the line of symmetry of the four recesses. The second secondary pipes 4a are respectively adjacent to the first secondary pipe holes 3 and are arranged outside the two first secondary pipe holes 3. And a cooling pipe avoiding position 6 is arranged at the end part of the other end of the supporting plate 1.
Referring to fig. 4 and 5, a main pipe 2a is installed in the main pipe through hole 2; a first auxiliary pipe 3a is arranged in the first auxiliary pipe hole 3; a second auxiliary pipe 4a is arranged in the second auxiliary pipe hole 4; the cooling pipe avoiding position 6 passes through a cooling pipe (not shown).
Referring to fig. 1 and 2, the multi-channel inner tube support structure further includes a connecting member 5. The connector 5 includes a C-clip 51, a locking member 52, a shim plate assembly 53, and a universal ball 54.
The C-shaped clamp 51 comprises side plates 511, a top plate 512 and a bottom plate 513. The top plate 512 and the bottom plate 513 are respectively disposed above and below the support plate 1. The top plate 512 and the bottom plate 513 are arranged in parallel, and the starting ends of the top plate 512 and the bottom plate 513 are located on the same vertical line. The shim plate assembly 53 includes an upper shim 531 and a lower shim 532. An upper gasket 531 is arranged between the top plate 512 and the top surface of the support plate 1. A lower gasket 532 is arranged between the bottom plate 513 and the bottom surface of the support plate 1.
The locking member 52 includes an upper lock cylinder 521 and a lower lock cylinder 522. The upper lock cylinder 521 passes through the top plate 512 and bottom abuts the upper washer 531. The upper lock column 521 is matched with the top plate 512 through threads. The lower lock cylinder 522 passes through the bottom plate 513 and the top end abuts against the lower washer 532. The lower lock cylinder 522 is threadedly engaged with the bottom plate 513.
The universal ball 54 includes a connection post 541 and a semicircular projection 542. The connection post 541 is fixed at the center of the outward side of the side plate 511. A semicircular bulge 542 is integrally formed on the vertical surface of the connecting column 541. The semicircular projection 542 is spaced from the center of the support plate 1 by a distance greater than the distance from the outermost edge of the support plate 1 to the center.
The support plate 1 is further provided with a plurality of first lightening holes 21, second lightening holes 31 and third lightening holes 41. The first lightening holes 21 are distributed in a ring belt shape around the periphery of the main pipe through hole 2. The second lightening holes 31 are distributed in a ring belt shape around the periphery of the first secondary pipe hole 3. The third lightening holes 41 are distributed in a ring belt shape around the periphery of the second secondary pipe hole 4.
The inner wall of the main pipe through hole 2 extends towards the center of the main pipe through hole 2 to form a first bulge 22. The inner wall of the first secondary pipe hole 3 extends towards the center to form a second protrusion 32. The inner wall of the second secondary pipe hole 4 extends towards the center to form a third bulge 42.
The working principle of the embodiment is as follows: firstly, welding a cooling pipe and a cold shield (not shown), aligning a cooling pipe avoiding position 6 to the position of the cooling pipe, pushing a support plate 1 downwards to enable a semicircular bulge 542 to slide on the cold shield, removing the pushing force after the support plate 1 reaches a preset position, and firmly propping against the inner wall of the cold shield under the elastic action of the semicircular bulge 542; the installation mode of the channel inner pipe supporting structure is quick and convenient; then, after the integral position of the support plate 1 is positioned, the main pipe 2a, the first auxiliary pipe 3a and the second auxiliary pipe 4a correspondingly penetrate through the main pipe through hole 2, the first auxiliary pipe hole 3 and the second auxiliary pipe hole 4 in the support plate 1 respectively; the position of the end part of the cooling pipe of the cold shield is not required to be fixed with the position of each pipeline, so that the cantilever stress of the fixed point between the cold shield and each pipeline is effectively avoided; all pipelines are connected by using a multi-channel inner pipe supporting structure, and the cold shield and each pipeline do not need to be independently fixed, so that the supporting effect is good; the heat leakage of the system is reduced, the system structure is simpler, the assembly difficulty is reduced, and the assembly time is saved; after the pipes are installed, an external vacuum pipe (not shown) is sleeved outside the cold shield.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The above embodiments only show the embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.
Claims (7)
1. A multichannel inner tube bearing structure which characterized in that: comprises a supporting plate and a connecting piece; the supporting plate is of a similar circular structure with a line passing through the center as a symmetrical line and two notches symmetrically arranged at two ends respectively; the supporting plate vertically penetrates through main pipe through holes with axes on four notch symmetrical lines; two first secondary pipe holes which are communicated up and down are also formed in the supporting plate; the two first secondary pipe holes are symmetrical relative to the symmetrical line of the four notches; and the first secondary pipe hole is positioned at one end of the support plate; two second auxiliary pipe holes are formed in the supporting plate; the two second secondary orifices are symmetrical about the line of symmetry of the four notches; the second auxiliary pipes are respectively adjacent to the first auxiliary pipe holes and arranged outside the two first auxiliary pipe holes; the other end of the supporting plate is provided with a cooling pipe avoidance position; and a connecting piece for connecting the cold screen is fixed at the edge of the notch of the supporting plate.
2. The multi-channel inner tube support structure of claim 1, wherein: the connecting piece comprises a C-shaped clamp, a locking piece, a base plate assembly and a universal ball; the C-shaped clamp is clamped on the edge of the notch of the supporting plate; a base plate assembly is arranged between the upper end and the lower end of the C-shaped clamp and the upper end surface and the lower end surface of the edge of the notch of the supporting plate; the upper end and the lower end of the C-shaped clamp are respectively fixed on the supporting plate through locking pieces; and a universal ball is fixed on the outward side of the C-shaped clamp.
3. A multi-channel inner tube support structure according to claim 2, wherein: the C-shaped clamp comprises a side plate, a top plate and a bottom plate; the top plate and the bottom plate are respectively arranged above and below the supporting plate; the top plate and the bottom plate are arranged in parallel, and the starting ends of the top plate and the bottom plate are positioned on the same vertical line; the base plate assembly comprises an upper gasket and a lower gasket; an upper gasket is arranged between the top plate and the top surface of the supporting plate; and a lower gasket is arranged between the bottom plate and the bottom surface of the supporting plate.
4. A multi-channel inner tube support structure according to claim 3, wherein: the locking piece comprises an upper locking column and a lower locking column; the upper lock column penetrates through the top plate, and the bottom of the upper lock column is abutted to the upper gasket; the upper lock column is matched with the top plate through threads; the lower lock cylinder penetrates through the bottom plate, and the top end of the lower lock cylinder is abutted against the lower gasket; the lower lock cylinder is matched with the bottom plate through threads.
5. A multi-channel inner tube support structure according to claim 3, wherein: the universal ball comprises a connecting column and a semicircular bulge; the connecting column is fixed at the center of the outward side of the side plate; a semicircular bulge is integrally formed on the vertical surface of the connecting column; the distance between the semicircular bulge and the center of the support plate is larger than the distance between the farthest edge of the support plate and the center of the support plate.
6. The multi-channel inner tube support structure of claim 1, wherein: the supporting plate is also provided with a plurality of first lightening holes, second lightening holes and third lightening holes; the first lightening holes are distributed in an annular band shape around the periphery of the main pipe through hole; the second lightening holes are distributed in an annular band shape around the periphery of the first secondary pipe hole; and the third lightening holes are distributed in an annular band shape around the periphery of the second secondary pipe hole.
7. The multi-channel inner tube support structure of claim 1, wherein: the center of the main pipe through hole is deviated from the center of the support plate to the connecting piece.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021332194 | 2020-07-09 | ||
| CN2020213321942 | 2020-07-09 |
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| CN214946957U true CN214946957U (en) | 2021-11-30 |
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| CN202120594256.5U Active CN214946957U (en) | 2020-07-09 | 2021-03-19 | Multichannel inner tube bearing structure |
| CN202110296612.XA Active CN113063036B (en) | 2020-07-09 | 2021-03-19 | Multichannel inner tube bearing structure |
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| CN202110296612.XA Active CN113063036B (en) | 2020-07-09 | 2021-03-19 | Multichannel inner tube bearing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063036A (en) * | 2020-07-09 | 2021-07-02 | 安徽万瑞冷电科技有限公司 | Multichannel inner tube bearing structure |
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| AU1834383A (en) * | 1982-08-31 | 1984-03-08 | Australian Plastic Mouldings Pty. Ltd. | Conduit |
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| JP2004100821A (en) * | 2002-09-10 | 2004-04-02 | Hitachi Plant Eng & Constr Co Ltd | Support for piping |
| CA2411500A1 (en) * | 2002-11-07 | 2004-05-07 | Serge Lussier | Para-seismic support for pipes |
| AT500191B1 (en) * | 2004-03-12 | 2006-11-15 | Wien Kanal Abwassertech Gmbh | Arrangement for laying cables comprises a cable that can be positioned in a stationary manner created and ensured by the force of gravity and the friction fit produced |
| PL2048375T3 (en) * | 2007-10-05 | 2011-11-30 | Buresuto Kogyo Co Ltd | Supporting bracket and nut holder |
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| CN103903830B (en) * | 2014-03-10 | 2016-05-18 | 中国科学院等离子体物理研究所 | Cold supporting construction in superconducting magnet feeder system |
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| CN205283020U (en) * | 2015-12-18 | 2016-06-01 | 江西扬帆实业有限公司 | Antiwind cable protection pipe |
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| CN209182758U (en) * | 2019-01-29 | 2019-07-30 | 郑州云海信息技术有限公司 | A kind of support device for storage server |
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| CN214946957U (en) * | 2020-07-09 | 2021-11-30 | 安徽万瑞冷电科技有限公司 | Multichannel inner tube bearing structure |
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2021
- 2021-03-19 CN CN202120594256.5U patent/CN214946957U/en active Active
- 2021-03-19 CN CN202110296612.XA patent/CN113063036B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063036A (en) * | 2020-07-09 | 2021-07-02 | 安徽万瑞冷电科技有限公司 | Multichannel inner tube bearing structure |
| CN113063036B (en) * | 2020-07-09 | 2023-12-19 | 安徽万瑞冷电科技有限公司 | Multichannel inner tube bearing structure |
Also Published As
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| CN113063036A (en) | 2021-07-02 |
| CN113063036B (en) | 2023-12-19 |
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