CN115775654A - Ablation-resistant cable network for ground measurement and control - Google Patents
Ablation-resistant cable network for ground measurement and control Download PDFInfo
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- CN115775654A CN115775654A CN202211471662.8A CN202211471662A CN115775654A CN 115775654 A CN115775654 A CN 115775654A CN 202211471662 A CN202211471662 A CN 202211471662A CN 115775654 A CN115775654 A CN 115775654A
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Abstract
The ground testing, launching and controlling ablation-resistant cable net comprises a JF2 rectangular separation and falling electric connector, a J599 high-reliability sealing connector, a multi-core high-temperature fire-resistant control flexible cable, a combined high-temperature-resistant protective layer and polyimide tape connector tail cover high-temperature-resistant packaging; each cable core at one end of the multi-core high-temperature fire-resistant control flexible cable is connected with the JF2 rectangular separation and shedding electric connector through a combined high-temperature-resistant protective layer, and a polyimide tape connector tail cover high-temperature-resistant package is arranged at the connecting end of the JF2 rectangular separation and shedding electric connector; the other end is connected with a J599 high-reliability sealing connector, and a combined high-temperature-resistant protective layer and polyimide tape connector tail cover high-temperature-resistant packaging are arranged at the joint. According to the ablation-resistant cable net for ground test, launch and control, the connecting section of the cable and the connector adopts the combined high-temperature-resistant protective layer, and the connecting part of the cable and the connector adopts the polyimide tape connector tail cover for high-temperature-resistant packaging, so that the cable net integrally meets the use requirements of resisting high temperature of 1500 ℃ and resisting at least 3S.
Description
Technical Field
The invention relates to the field of wires and cables, in particular to a ground measurement, launch and control ablation-resistant cable net.
Background
At present, the high-temperature-resistant cable nets produced in domestic and the same lines mainly adopt hot-melt insulating materials, and asbestos and glass fiber tapes (glass fiber tapes for short) are used as fire-resistant protective layers, however, the structure has the defects of several aspects, on one hand, the asbestos and the glass fiber tapes are easy to damage and drop wires, and the asbestos and the glass fiber tapes are easy to produce toxic damage to operators and production personnel; on the other hand, the cable has poor temperature resistance effect in certain working occasions, for example, the use requirement of a heat-resistant environment of a cable net matched with a ground rocket launching control system cannot be met, the highest temperature of the environment can reach 1500 ℃, and the cable is required to be subjected to 3s without being damaged. Moreover, the thickness of the fireproof protective layer of domestic manufacturers is 4.0-5.0 mm, the outer diameter of the product is large, the whole cable is hard, and the installation is difficult.
With the increase of rocket launching projects, the requirements for detecting, launching and controlling ablation-resistant cable nets on the ground are gradually increased, the product quality is enhanced, and meanwhile, the high-temperature-resistant requirement is provided for high-temperature-resistant packaging of the contact part of the tail cover of the cable net connector and the cable. The common cable net product in China adopts a polyvinyl chloride belt assembly mode, the heat resistance can only reach 105 ℃ working environment at most, and the requirement of the heat-resistant environment of a space launching site cannot be met.
Disclosure of Invention
In view of the above, there is a need to provide an ablation-resistant cable network for ground measurement and control, which addresses at least one of the above-mentioned problems.
The invention provides a ground test, launch and control ablation-resistant cable net which comprises a JF2 rectangular separation and shedding electric connector, a J599 high-reliability sealing connector, a multi-core high-temperature fire-resistant control flexible cable, a combined high-temperature-resistant protective layer and polyimide tape connector tail cover high-temperature-resistant packaging;
each cable core at one end of the multi-core high-temperature fire-resistant control flexible cable is connected with the JF2 rectangular separation and shedding electric connector through the combined high-temperature-resistant protective layer, and the tail cover of the polyimide sub-adhesive tape connector is arranged at the connecting end of the JF2 rectangular separation and shedding electric connector for high-temperature-resistant packaging; the other end of the multi-core high-temperature fire-resistant control flexible cable is connected with the J599 high-reliability sealing connector, and the combined high-temperature-resistant protective layer and the polyimide tape connector tail cover are arranged at the joint from inside to outside in a high-temperature-resistant packaging mode.
In one embodiment, the JF2 rectangular separation and shedding electrical connector and the J599 high-reliability sealing connector both have housings made of high-temperature-resistant alloy; the multi-core high-temperature fire-resistant control flexible cable is a finished cable made of a tinned copper conductor, an F46/PI/F46 composite insulating tape, a combined high-temperature-resistant protective layer and a TPU sheath.
In one embodiment, the F46/PI/F46 composite insulating tape is wrapped on the tin-plated copper conductor to form an F46/PI/F46 insulating wire core.
In one embodiment, the combined high-temperature-resistant protective layer covers a plurality of F46/PI/F46 insulated wire cores.
In one embodiment, the multi-core high-temperature fire-resistant control flexible cable is formed by stranding a plurality of F46/PI/F46 insulated wire cores into a cable, wherein the inner layer is not more than 20 times of the stranding diameter of each layer in the cable pitch, and the outer layer is not more than 16 times of the stranding diameter.
In one embodiment, a tinned copper wire braided sleeve and a high-temperature-resistant polyolefin heat-shrinkable tube with glue are further arranged outside the high-temperature-resistant protective combination layer;
the tinned copper wire braid coats the combined high-temperature-resistant protective layer, the weaving density is not lower than 85%, and the high-temperature-resistant polyolefin adhesive heat-shrinkable tube coats the tinned copper wire braid.
In one embodiment, the combined high temperature resistant protective layer comprises a polyimide tape, a mica tape, a glass fiber cloth and a low smoke zero halogen flame retardant tape.
The technical scheme provided by the embodiment of the invention has the following beneficial technical effects:
the ground testing, launching and controlling ablation-resistant cable net provided by the invention adopts a high-temperature-resistant multi-core high-temperature-resistant fire-resistant control flexible cable, the connecting section of the cable and the connector adopts a combined high-temperature-resistant protective layer, and the connecting part of the cable and the connectors at two ends adopts polyimide tape connector tail cover high-temperature-resistant packaging, so that the whole cable net can reach the high-temperature resistance of 1500 ℃ and can resist the use requirement of at least 3S.
Additional aspects and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a ground-based ablation-resistant cable network according to an embodiment of the present invention.
Description of reference numerals:
the high-reliability high-temperature-resistant electric connector comprises a 100-JF2 rectangular separation and shedding electric connector, a 200-J599 high-reliability sealing connector, a 300-polyimide tape connector tail cover high-temperature-resistant packaging layer, a 400-combined high-temperature-resistant protective layer, a 500-multi-core high-temperature-resistant control flexible cable and a 600-F46/PI/F46 insulated wire core.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Possible embodiments of the invention are given in the figures. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. The embodiments described by way of example with reference to the figures are intended to provide a more complete understanding of the disclosure of the present invention and are not to be construed as limiting the invention. Furthermore, if a detailed description of known technologies is not necessary for illustrating the features of the present invention, such technical details may be omitted.
It will be understood by those skilled in the relevant art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.
The technical solution of the present invention and how to solve the above technical problems will be described in detail with specific examples.
The invention provides a ground testing, launching and controlling ablation-resistant cable net, which comprises a JF2 rectangular separation and falling electric connector, a J599 high-reliability sealing connector, a multi-core high-temperature fire-resistant control flexible cable, a combined high-temperature-resistant protective layer and polyimide tape connector tail cover high-temperature-resistant packaging as shown in figure 1. Specifically, in terms of structure, each cable core at one end of the multi-core high-temperature fire-resistant control flexible cable is connected with the JF2 rectangular separation and shedding electric connector through the combined high-temperature-resistant protection layer, and polyimide tape connector tail cover high-temperature-resistant packaging is arranged at the connection end of the JF2 rectangular separation and shedding electric connector; the other end of the multi-core high-temperature fire-resistant control flexible cable is connected with a J599 high-reliability sealing connector, and a combined high-temperature-resistant protective layer and polyimide tape connector tail cover high-temperature-resistant packaging are respectively arranged at the joint from inside to outside.
The ground testing, launching and controlling ablation-resistant cable net provided by the invention adopts a high-temperature-resistant multi-core high-temperature-resistant fire-resistant control flexible cable, the connecting section of the cable and the connector adopts a combined high-temperature-resistant protective layer, and the connecting part of the cable and the connectors at two ends adopts polyimide tape connector tail cover high-temperature-resistant packaging, so that the whole cable net can reach the high-temperature resistance of 1500 ℃ and can resist the use requirement of at least 3S.
Optionally, in an embodiment of the present application, the housings of the JF2 rectangular separation-and-drop electrical connector and the J599 high-reliability sealing connector are both made of high-temperature-resistant alloy; the multi-core high-temperature fire-resistant control flexible cable is a finished cable made of a tinned copper conductor, an F46/PI/F46 composite insulating tape, a combined high-temperature-resistant protective layer and a TPU sheath.
Optionally, in an embodiment of the present application, the F46/PI/F46 composite insulating tape is wrapped on the tin-plated copper conductor to form an F46/PI/F46 insulated wire core. The outermost layer of the tin-plated copper conductor is coated with an F46/PI/F46 composite insulating tape, and the two layers form a wire core.
Optionally, in a specific implementation manner of an embodiment of the present application, the combined high temperature-resistant protective layer covers the plurality of F46/PI/F46 insulated wire cores. A plurality of insulating wire cores are twisted to form an integral cable core, and a combined high-temperature-resistant protective layer is arranged on the outermost layer of the integral cable core. Particularly, the combined high-temperature-resistant protective layer comprises a polyimide tape, a mica tape, glass fiber cloth and a low-smoke halogen-free flame-retardant tape.
Optionally, in a further implementation manner of an embodiment of the present application, a tinned copper wire braided sleeve and a high-temperature resistant polyolefin glued heat-shrinkable tube are further arranged outside the high-temperature resistant protective combination layer; the tinned copper wire braid layer is coated with the combined high-temperature-resistant protective layer, the weaving density is not lower than 85%, and the high-temperature-resistant polyolefin adhesive heat-shrinkable tube is coated with the tinned copper wire braid layer.
Optionally, in another implementation of an embodiment of the present application, the multi-core high temperature fire-resistant control flexible cable is formed by stranding a plurality of F46/PI/F46 insulated cores into a cable, wherein the inner layer is not more than 20 times the stranding diameter of each layer and the outer layer is not more than 16 times the stranding diameter in the cable pitch.
In the ground test, launch and control ablation-resistant cable network provided by the invention, the end of a finished cable at the connecting end of the connector separated and fallen from the JF2 rectangle is treated as follows: stripping the outer sheath and the protective layer of the end of the high-temperature fire-resistant control flexible cable by using a proper cutter, wherein the length of the outer sheath and the protective layer is about 300mm, high-temperature wire harnesses in the cable are divided into 3 groups according to the positions of 3 wire outlets of a JF2 connector tail cover and the number of welded wire cores, the front ends of the 3 groups of wire harnesses are respectively reserved with 100mm, the 3 wire outlets of the JF2 connector tail cover respectively penetrate through the 3 wire outlets of the JF2 connector tail cover and are connected with an electric connector in a welding mode, the part of the 3 groups of wire harnesses between the 3 wire outlets of the JF2 connector and a finished product cable sheath in a length of 200mm is sheathed in a combined high-temperature-resistant protective layer mode, and then tinning is carried out after the tinning of tinning copper wire braided sleeves and high-temperature-resistant rubber-carrying heat-shrinkable sleeves which are sheathed with the shielding layer and the protective layer of the finished product cable in an overlapping mode; and finally, performing high-temperature-resistant packaging on the gap part, which is connected with the cable bundle after high-temperature protection, of the 3 wire outlets at the tail part of the connector by using a polyimide film and a polyimide adhesive tape.
Furthermore, the J599 connector at the other end of the high-temperature fire-resistant control flexible cable is only provided with one wire outlet, the insulated wire core is connected with the connector in a welding mode, and the wire outlet at the tail part of the connector is subjected to high-temperature-resistant packaging by adopting a polyimide film and a polyimide adhesive tape.
The polyimide film and the polyimide adhesive tape packaging layer are coated on the combined high-temperature-resistant protective layer, or a composite layer consisting of the combined high-temperature-resistant protective layer, the tinned copper wire woven layer and the high-temperature-resistant polyolefin adhesive heat-shrinkable tube is coated outside the cable bundle.
The JF2 rectangular separation and shedding electric connector shell is made of an aluminum alloy material, has the functions of flame resistance, rain resistance, salt mist resistance, electromagnetic interference resistance and the like, and has the performance index meeting the Q/Ag1.031A-2012 standard.
The J599 high-reliability sealing connector is made of stainless steel, a fireproof shell is good in sealing performance, anti-electromagnetic interference is achieved, and performance indexes meet GJB599 AIII series standards.
Polyimide film and polyimide sticky tape encapsulation layer are high temperature resistant material, can prevent that the high temperature air current from getting into inside the connector from connector tail cover outlet, avoid inside pencil to receive the impact of high temperature, and polyimide film and polyimide sticky tape performance index accord with following 1 regulation.
TABLE 1 polyimide film/polyimide tape (or adhesive tape)
| Item | Performance index |
| Width of | Specification +/-0.2 mm |
| Thickness of | 0.051±0.003mm |
| Temperature of | ≥200℃ |
| Peel force | ≥450g |
| Pressure-resistant material | 4KV |
| Appearance of the product | Without wrinkles, scratches, damages, pinholes and the like |
The composite layer comprises a combined high-temperature-resistant protective layer, a tinned copper wire woven layer and a high-temperature-resistant polyolefin adhesive heat-shrinkable tube, wherein the combined high-temperature-resistant protective layer is formed by sequentially wrapping a polyimide tape, a mica tape, glass fiber cloth and a low-smoke halogen-free flame-retardant tape from inside to outside, the high-temperature-resistant materials are all high-temperature-resistant materials, then a tinned copper wire woven sleeve is sleeved in a penetrating manner, the tinned copper wire is required to accord with the regulation of GB/T4910, the mica tape performance accords with the regulation of the following table 2, the glass fiber cloth accords with the regulation of the following table 3, the high-temperature-resistant polyolefin adhesive heat-shrinkable tube is blown and shrunk, and the performance index of the high-temperature-resistant polyolefin adhesive heat-shrinkable tube accords with the regulation of the following table 4.
TABLE 2 Performance index of mica tape
TABLE 3 fiberglass cloth Properties
| Item | Performance index |
| Breaking strength (N/mm) 2 ) | ≥330N/mm 2 |
| Gram weight (g/m) 2 ) | 220±20g/m 2 |
| Dielectric constant (kV/mm) | ＞5kV/mm |
| Oxygen index (%) | ≥70％ |
| Density of smoke | ≤100 |
| Flame retardant properties | Non-combustible |
TABLE 4 high temperature polyolefin glued heat shrink tubing performance index
| Item | Performance index |
| Tensile strength | ≥10.4MPa |
| Elongation at break | ≥300％ |
| Axial rate of change | -8％～+8％ |
| Volume resistivity | ≥10 14 Ω·cm |
| Breakdown strength | ≥15kV/mm |
The multi-core high-temperature fire-resistant control flexible cable is a finished cable, has high-temperature fire resistance, and can reach the requirements of 1500 ℃ and 3S heat-resistant environment. The high-temperature wire harness is a wire core of the high-temperature fire-resistant control flexible cable and is a tinned copper conductor, and the performance index of the conductor conforms to the specification of GJB 1640-1993. The high-temperature wiring harness is a wire core of the high-temperature fire-resistant control flexible cable, is insulated by an F46/PI/F46 composite tape and is a high-temperature-resistant material. The performance index is shown in Table 5.
TABLE 5F46/PI/F46 composite tape Performance index
The ground testing, launching and controlling ablation-resistant cable net is provided with a multilayer composite high-temperature protection structure, and adopts a JF2 rectangular separation falling electric connector, a J599 high-reliability sealing connector, a combined high-temperature-resistant protection layer and polyimide film + polyimide tape high-temperature packaging. The cable network integrally meets the requirements of 1500 ℃ and 3S heat-resistant environment.
Those of skill in the art will understand that the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (7)
1. A ground testing, launching and control ablation-resistant cable net is characterized by comprising a JF2 rectangular separation and shedding electric connector, a J599 high-reliability sealing connector, a multi-core high-temperature fire-resistant control flexible cable, a combined high-temperature-resistant protective layer and polyimide tape connector tail cover high-temperature-resistant packaging;
each cable core at one end of the multi-core high-temperature fire-resistant control flexible cable is connected with the JF2 rectangular separation and shedding electric connector through the combined high-temperature-resistant protective layer, and the tail cover high-temperature-resistant packaging of the polyimide adhesive tape connector is arranged at the connecting end of the JF2 rectangular separation and shedding electric connector; the other end of the multi-core high-temperature fire-resistant control flexible cable is connected with the J599 high-reliability sealing connector, and the combined high-temperature-resistant protective layer and the polyimide tape connector tail cover are arranged at the joint from inside to outside in a high-temperature-resistant packaging mode.
2. The ablation-resistant cable network for ground measurement, launch and control according to claim 1, wherein the housings of the JF2 rectangular separation-and-drop electrical connector and the J599 high-reliability sealing connector are both made of high-temperature-resistant alloy; the multi-core high-temperature fire-resistant control flexible cable is a finished cable made of a tinned copper conductor, an F46/PI/F46 composite insulating tape, a combined high-temperature-resistant protective layer and a TPU sheath.
3. The ablation-resistant cable net for ground measurement, development and control as claimed in claim 2, wherein the F46/PI/F46 composite insulating tape is wrapped on the tinned copper conductor to form an F46/PI/F46 insulated wire core.
4. The ground emission-control ablation-resistant cable net according to claim 3, wherein the high-temperature-resistant protection combination layer coats a plurality of F46/PI/F46 insulated wire cores.
5. The ground survey, development and control ablation-resistant cable net according to claim 3, wherein the multi-core high-temperature fire-resistant control flexible cable is formed by stranding a plurality of F46/PI/F46 insulated wire cores, wherein the inner layer is not more than 20 times of the stranding diameter of each layer in the stranding pitch, and the outer layer is not more than 16 times of the stranding diameter.
6. The ablation-resistant cable mesh for ground emission measurement and control according to claim 1, wherein a tinned copper wire braided sleeve and a high-temperature-resistant polyolefin adhesive heat-shrinkable tube are further arranged outside the high-temperature-resistant protective combination layer;
the tinned copper wire braid coats the combined high-temperature-resistant protective layer, the weaving density is not lower than 85%, and the high-temperature-resistant polyolefin adhesive heat-shrinkable tube coats the tinned copper wire braid.
7. The ablation-resistant cable mesh for ground test, development and control according to claim 1, wherein the combined high-temperature-resistant protective layer comprises a polyimide tape, a mica tape, a glass fiber cloth and a low-smoke halogen-free flame-retardant tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211471662.8A CN115775654A (en) | 2022-11-23 | 2022-11-23 | Ablation-resistant cable network for ground measurement and control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211471662.8A CN115775654A (en) | 2022-11-23 | 2022-11-23 | Ablation-resistant cable network for ground measurement and control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115775654A true CN115775654A (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211471662.8A Pending CN115775654A (en) | 2022-11-23 | 2022-11-23 | Ablation-resistant cable network for ground measurement and control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115775654A (en) |
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- 2022-11-23 CN CN202211471662.8A patent/CN115775654A/en active Pending
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