CN117877805A - Butt joint structure of armored cable and double-layer shielding low-noise cable - Google Patents
Butt joint structure of armored cable and double-layer shielding low-noise cable Download PDFInfo
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- CN117877805A CN117877805A CN202311846512.5A CN202311846512A CN117877805A CN 117877805 A CN117877805 A CN 117877805A CN 202311846512 A CN202311846512 A CN 202311846512A CN 117877805 A CN117877805 A CN 117877805A
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- Prior art keywords
- cable
- low
- shielding
- noise
- end cover
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- 210000001503 joint Anatomy 0.000 title claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 210000000078 claw Anatomy 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 4
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 238000009954 braiding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Abstract
The invention relates to a butt joint structure of an armored cable and a double-layer shielding low-noise cable, which comprises a connecting pipe, a shielding sleeve and a shielding sleeve, wherein two ends of the connecting pipe are respectively provided with a mounting disc and an end cover in a sealing manner; the shielding sleeve is hermetically arranged on the side surface of the end cover, which is far away from the mounting disc, and is used for the low-noise cable, the claw is arranged on the side surface of the end cover, which is close to the mounting disc, one end of the low-noise cable stretches into the end cover and leaves a second stretching section, the inner layer metal woven shielding layer of the second stretching section is wound on the claw, and the electric core of the second stretching section is wound on the first stretching section, so that the assembly efficiency of the two types of cables is improved.
Description
Technical Field
The invention relates to the technical field of cable installation structures, in particular to a butt joint structure of an armored cable and a double-layer shielding low-noise cable.
Background
The turbine inlet temperature is greatly increased due to the development of high-temperature alloys of aeroengines and the progress of air cooling and coating technologies. In general, the aero-engine or the auxiliary power device thereof is matched with a temperature measuring sensor such as a thermocouple, and the use requirements of temperature resistance and insulation above 870 ℃ can be met. The use temperature of vibration sensors such as high-temperature piezoelectric vibration sensors of the casing and accessories reaches 482 ℃, and the application environment requirements of the vibration sensors enable the use temperature of the vibration sensors to be not more than 260 ℃ to be difficult to adapt to the harsh working environment under the high-temperature vibration. The armored cable which can reach the temperature resistant environment above 260 ℃ is generally used, the high-temperature alloy shell and the magnesia powder are filled for good high-temperature resistant performance, but the armored cable is hard, is easily limited by the bending radius of the cable when the cable is installed on a machine, cannot be installed on the complex casing wall conveniently, and sometimes needs to be bent in advance before leaving a factory. The flexible cable of nonmetal insulating sheath type has the advantages of low temperature resistance, no more than 260 ℃ installation, wiring installation and wiring convenience with the butt connector of the upper computer, and is widely applied. Particularly, the wiring with a long distance of more than 1.5m can be used for conveniently wiring and has relatively low cost.
Disclosure of Invention
In view of the above, the butt joint structure of the armored cable and the double-layer shielding low-noise cable provided by the invention not only meets the wiring requirement of the sensor in the high-temperature area on the aircraft, but also can meet the wiring convenience in the relatively low-temperature area and the butt joint of the cable and an upper computer, combines the armored cable and the cable with the metal braided shielding layer to form a soft and hard cable, has very important engineering application value and significance for improving the high-temperature to low-temperature large-temperature-difference cable wiring of the airborne sensor, and solves the technical problem that the use function of the existing product is lower.
The butt joint structure of the armored cable and the double-layer shielding low-noise cable is suitable for butt joint installation of the armored cable in a high-temperature area and the low-noise cable in a low-temperature area of a casing, and comprises a connecting pipe, a shielding sleeve and a shielding sleeve, wherein the two ends of the connecting pipe are respectively provided with a mounting disc and an end cover in a sealing way,
the side surface, far away from the end cover, of the mounting disc is provided with a mounting bushing which is arranged in a gradual change structure, a small port of the mounting bushing is communicated with the shielding sleeve in a sealing way, the shielding sleeve is used for assembling an armored cable, and a battery core of the armored cable penetrates through the mounting disc and is provided with a first extending section;
the side surface, far away from the mounting disc, of the end cover is provided with a shielding sleeve in a sealing manner, the shielding sleeve is used for a low-noise cable, the side surface, close to the mounting disc, of the end cover is provided with a claw, one end of the low-noise cable stretches into the end cover and a second stretching section is reserved, an inner layer metal woven shielding layer of the second stretching section is wound on the claw, and a battery core of the second stretching section is wound on the first stretching section;
and the sealing area formed by the connecting pipe, the mounting disc and the end cover is filled with epoxy resin or polyimide.
Advantageous effects
The butt joint structure of the armored cable and the double-layer shielding low-noise cable can firmly fix the soft and hard cable in the full-metal closed sleeve, meanwhile, the sealing welding of the armored cable in a high temperature area and the protection of the metal braided sleeve are realized, the soft cable realizes the fixation of the inner and outer double-layer shielding sleeve, the structure is reliable, the electromagnetic shielding effectiveness is higher, and the flexible wiring of a high temperature difference area is crossed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a front cross-sectional view of a butt joint structure of an armored cable and a double-layer shielded low-noise cable;
FIG. 2 is an enlarged view of A;
FIG. 3 is a front cross-sectional view of the mounting plate;
FIG. 4 is a front cross-sectional view of the end cap;
fig. 5 is a left side view of the end cap, wherein:
1. a shielding sleeve; 2. an armored cable; 3. installing a bushing; 4. an outer liner; 5. an inner liner; 6. a mounting plate; 7. a connecting pipe; 8. an end cap; 9. a shielding sleeve; 10. an outer sleeve; 11. a low noise cable; 21. a first extension; 61. a lug; 81. a threaded portion; 82. a cylindrical portion; 83. an arc-shaped portion; 831. arc-shaped bulges; 832. a clamping groove; 111. and a second extension.
Detailed Description
Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
Other advantages and effects of the present disclosure will become readily apparent to those skilled in the art from the following disclosure, which describes embodiments of the present disclosure by way of specific examples. It will be apparent that the described embodiments are merely some, but not all embodiments of the present disclosure. The disclosure may be embodied or practiced in other different specific embodiments, and details within the subject specification may be modified or changed from various points of view and applications without departing from the spirit of the disclosure. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concepts of the disclosure by way of illustration, and only the components related to the disclosure are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that aspects may be practiced without these specific details.
Referring to the butt joint structure of the armored cable and the double-layer shielding low-noise cable shown in fig. 1 to 5, the butt joint structure is suitable for butt joint installation of the armored cable 2 in a high-temperature area and the low-noise cable 11 in a low-temperature area of a casing, and comprises a connecting pipe 7 and a shielding sleeve 1, wherein the metal braiding molding and shielding sleeve 9 are shown in fig. 1, two ends of the connecting pipe 7 are respectively provided with a mounting disc 6 and an end cover 8 in a sealing way,
the side-mounting that keeps away from end cover 8 on the mounting plate 6 has the installation bush 3 that sets up with gradual change structure, the miniport of installation bush 3 and shield sleeve 1 seal intercommunication, shield sleeve 1 is used for assembling armoured cable 2, the electric core of joining in marriage armoured cable 2 passes mounting plate 6 and leaves first stretch 21, the side-mounting that keeps away from mounting plate 6 on the end cover 8 has sealed the cover 9 of installing, cover 9 is used for low noise cable 11, be provided with the jack catch on the side of the close proximity mounting plate 6 on the end cover 8, wherein, the one end of low noise cable 11 stretches into end cover 8 and leaves second stretch 111, the inlayer metal braiding shielding layer of second stretch 111 twines on the jack catch, the electric core wiring of second stretch 111 is on first stretch 21. The sealing area formed by the connection pipe 7, the mounting plate 6 and the end cap 8 is filled with epoxy resin or polyimide, which serves to buffer vibration generated from the outside, reduce the influence on the cable, and fix the battery cell of the second extension 111 and the first extension 21.
As a specific embodiment provided in the present case, for further reinforcement, the vibration-avoiding effect, the present invention further comprises an outer bushing 4 and an inner bushing 5, wherein the large opening end of the part-length installation bushing 3 is fastened and nested by the inner bushing 5, the inner bushing 5 is fastened and nested by the outer bushing 4, and the outer bushing 4 is welded with the installation plate 6 in a sealing manner. The mounting plate 6 is provided in a hollow cylindrical structure for facilitating the assembly of the armored cable 2, and, as shown in fig. 3, a lug 61 provided in an annular structure is mounted at a predetermined position (a position adjacent to the outer bushing 4) in the circumferential direction of the mounting plate 6, and the lug 61 is sealed and welded with the outer bushing 4.
Further, the end of the armored cable 2 and the mounting bush 3 are fixed in a silver-copper welding mode.
As the embodiment that the present case provided, for the installation and the fixed of convenient flexible cable, still include outer tube 10, outer tube 10 fastening nested shielding cover 9, and the side of keeping away from mounting plate 6 on end cover 8 is installed to the one end of outer tube 10 to, as shown in fig. 4, set up the jack catch on the side of the adjacent mounting plate 6 of end cover 8, the structure of jack catch is as follows:
as shown in fig. 5, the shield sleeve 9 includes a screw portion 81 and a cylindrical portion 82 communicating with the screw portion 81, and the screw portion 81 is screwed to the shield sleeve 9. The cylindrical portion 82 is installed in the central area of the threaded portion 81, one end of the cylindrical portion 82 is connected with an arc portion 83 which is arranged in a semi-cylindrical structure, arc protrusions 831 are arranged on the arc portion 83 at intervals, and a clamping groove 832 which can be used for winding an inner metal braiding shielding layer is formed between any two adjacent arc protrusions 831 on the axial direction of the arc portion 83.
Further, the low noise cable 11 is a flexible cable of nonmetal insulating sheath type, and the battery core of the second extension section 111 is wound on the first extension section 21, as shown in fig. 2, including that the battery core of the second extension section 111 is wound on a non-end position of the first extension section 21, after the winding, the end of the first extension section 21 is turned over, and the battery core of the second extension section 111 is fixed.
The whole effect is as follows:
1) Besides reducing bending stress concentration of the root of the armored cable, the mounting bushing realizes sealing welding of the cable through silver brazing.
2) After the installation bushing and the installation disk are welded and fixed, the inner cavity is filled with epoxy resin or polyimide to realize the moisture absorption prevention of the magnesia powder.
3) The inner and outer liners clamp the metal braided shielding sleeve, so that the armored cable is protected, and the double-layer shielding protection effect is achieved.
4) The soft and hard cable cores are connected in an opposite mode, the soft wire cores are wound around the hard wire cores, then the hard wire cores are bent, welded and fixed, and the connecting structure is firm and stable.
5) The flexible cable adopts a section of bending deformation clamping claw, and the other end of the flexible cable can adopt an end cover structure of an outer sleeve pressing metal braided shielding sleeve. The clamping device is used for winding the inner shielding layer of the low-noise cable, bending and deforming the cable, pressing the metal braided shielding sleeve by the outer sleeve, welding and fixing the cable, and pressing the cable by the hexagonal structure. Therefore, the inner layer of the flexible cable is firmly fixed, and the outer layer of the flexible cable is pressed to be hexagonal, so that the stress concentration of outgoing lines is prevented besides the fixation is reliable.
6) The high-temperature section inorganic mineral filled armored cable and the low-temperature end low-noise cable have the advantages that the whole cable structure is double-shielded, the environmental adaptability is good, and the electromagnetic interference resistance is high.
The assembly method comprises the following steps:
after exposing the metal wire core, the armoured cable 2 is sealed and fixed with the mounting bush 3 by silver brazing at the small opening end of the bush, the mounting plate 6 is welded and fixed with the large opening end of the mounting bush 3, the outer bush 4 and the inner bush 5 are pressed and bonded with the metal woven shielding sleeve 1 by argon arc welding and fixed, and then the outer bush 4 is welded and fixed with the mounting plate 6. At this time, all parts at the high-temperature cable end are welded and fixed, and the high-temperature cable is baked and insulated, and then the inner cavity of the mounting disc 6 is filled with epoxy resin or polyimide resin for sealing, so that the high-temperature cable combination is formed.
The low-noise cable 11 is peeled off a metal wire harness, the low-noise treatment semi-conductive layer is cleaned, the inner metal woven shielding layer is peeled off, the low-noise cable 11 stretches into the end cover 8 and turns up the inner metal woven shielding layer to be wound on the clamping hooks of the end cover 8, the cable is clamped with an insulating skin part and is bent and deformed by tools such as a vice, the low-noise cable 11 and the end cover 8 are relatively fixed, the outer sleeve 10 is pressed into the shielding sleeve 9 and is welded and fixed with the end cover 8, and then the low-temperature cable combination is formed.
After trimming the metal wire cores of the high-temperature cable combination and the low-temperature cable combination to a proper length, winding the metal wire cores of the armored cable after winding the metal wire cores according to the illustrated structure, bending and welding the metal wire cores, sleeving the connecting pipe 7 on the low-noise cable 11 end of the low-temperature cable combination, and fixedly connecting the high-temperature cable combination and the low-temperature cable combination by welding to form a butt joint structure.
The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the disclosure are intended to be covered by the protection scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (9)
1. The butt joint structure of the armored cable and the double-layer shielding low-noise cable is suitable for butt joint installation of the armored cable in a high-temperature area and the low-noise cable in a low-temperature area of a casing, and is characterized by comprising a connecting pipe, a shielding sleeve and a shielding sleeve, wherein the two ends of the connecting pipe are respectively provided with a mounting disc and an end cover in a sealing way,
the side surface, far away from the end cover, of the mounting disc is provided with a mounting bushing which is arranged in a gradual change structure, a small port of the mounting bushing is communicated with the shielding sleeve in a sealing way, the shielding sleeve is used for assembling an armored cable, and a battery core of the armored cable penetrates through the mounting disc and is provided with a first extending section;
the side surface, far away from the mounting disc, of the end cover is provided with a shielding sleeve in a sealing manner, the shielding sleeve is used for a low-noise cable, the side surface, close to the mounting disc, of the end cover is provided with a claw, one end of the low-noise cable stretches into the end cover and a second stretching section is reserved, an inner layer metal woven shielding layer of the second stretching section is wound on the claw, and a battery core of the second stretching section is wound on the first stretching section;
and the sealing area formed by the connecting pipe, the mounting disc and the end cover is filled with epoxy resin or polyimide.
2. The shielded electrical cable interface structure of claim 1, further comprising an outer liner and an inner liner, wherein,
the part of the length of the large opening end of the mounting bush is fastened and nested by the inner bush, the inner bush is fastened and nested by the outer bush, and the outer bush is welded with the mounting disc in a sealing way.
3. The shielded cable interface structure of claim 2, wherein the mounting plate is disposed in a hollow cylindrical configuration.
4. The butt joint structure of an armored cable and a double-layer shielding low-noise cable according to claim 3, wherein lugs arranged in an annular structure are arranged at preset positions in the circumferential direction of the mounting disc, and the lugs are welded with the outer lining in a sealing mode.
5. The butt joint structure of the armored cable and the double-layer shielding low-noise cable according to claim 4, wherein the armored cable end and the mounting bushing are fixed in a silver-copper welding mode.
6. The shielded cable interface structure of claim 1, further comprising an outer sleeve that securely nests the shield, and wherein one end of the outer sleeve is mounted to a side of the end cap remote from the mounting plate.
7. The butt joint structure of an armored cable and a double-layer shielding low-noise cable according to claim 1, wherein the end cover is adjacent to the side surface of the mounting plate and is provided with a claw, the claw comprises a threaded part and a cylindrical part communicated with the threaded part, the cylindrical part is installed in the central area of the threaded part, one end of the cylindrical part is connected with an arc-shaped part arranged in a hollow semi-cylindrical structure, arc-shaped protrusions are arranged on the arc-shaped part at intervals, and a clamping groove capable of winding the inner metal braided shielding layer is formed between any two adjacent arc-shaped protrusions in the axial direction of the arc-shaped part.
8. The armored cable and double-shielded low-noise cable interface structure of claim 1, wherein the low-noise cable is a flexible cable of the nonmetallic insulating sheath type.
9. The butt joint structure of the armored cable and the double-layer shielding low-noise cable according to claim 1, wherein the electric core of the second extension section is wound at a non-end position of the first extension section, and after the winding, the end of the first extension section is turned over to fix the electric core of the second extension section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311846512.5A CN117877805A (en) | 2023-12-29 | 2023-12-29 | Butt joint structure of armored cable and double-layer shielding low-noise cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311846512.5A CN117877805A (en) | 2023-12-29 | 2023-12-29 | Butt joint structure of armored cable and double-layer shielding low-noise cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117877805A true CN117877805A (en) | 2024-04-12 |
Family
ID=90591374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311846512.5A Pending CN117877805A (en) | 2023-12-29 | 2023-12-29 | Butt joint structure of armored cable and double-layer shielding low-noise cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117877805A (en) |
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2023
- 2023-12-29 CN CN202311846512.5A patent/CN117877805A/en active Pending
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