High and low temperature resistant transmission cable for instrument

Abstract

The utility model relates to the technical field of transmission cables, and discloses a high and low temperature resistant transmission cable for an instrument, which comprises a power line, a 1553B data bus for aerospace, a shielding pair twisting group, a single core group, a single-sided aluminum foil wrapping layer, a silver-plated braided shielding layer and a raw material belt wrapping sintering layer, the single-face aluminum foil wrapping layer wraps the power line, the 1553B data bus for aerospace, the shielding twisted-pair group and the single-core group, fluoroplastic insulating materials are adopted to serve as a cable sheath, it is ensured that the cable can still work stably and is not prone to aging or cracking in severe high and low temperature environments, a multi-layer shielding structure is arranged in the cable, external electromagnetic interference can be effectively reduced, and the service life of the cable is prolonged. The signal transmission stability is protected, meanwhile, the double-layer raw material belt wrapping sintering layer is adopted, so that the cable can withstand frequent bending without being broken and is higher in durability, the power line, the 1553B data bus for aerospace, the shielding pair twisting group, the single-core group and other assemblies all adopt high-quality silver-plated copper conductors, and efficient and stable transmission of signals is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission cable technical field, concretely is a kind of transmission cable for high and low temperature resistant instrument. BACKGROUND

[0002] Transmission cable is an important component of telecommunication system, which conducts electromagnetic wave (including low frequency electromagnetic wave and high frequency signal) to load in guided mode. According to different transmission contents, transmission cable can be divided into various types, such as power cable and signal cable. When selecting transmission cable, factors such as transmission content, transmission distance, transmission rate, anti-interference ability, cost and installation complexity need to be considered. For application scenarios requiring long-distance transmission and high bandwidth, optical fiber cable is a better choice. For application scenarios with limited cost and short transmission distance, twisted pair cable is more suitable.

[0003] The signal transmitted by the conventional transmission cable for instrument is small and sensitive, so it is easily disturbed by external factors. At the same time, transmission cable is often used in narrow cabinet interior, frequently bent mechanical equipment or other complex working environment. The cable is easily eroded by external environment, such as temperature, humidity and chemical corrosion, etc., which leads to accelerated aging of the insulation layer. Frequent bending can easily cause the cable sheath to relax or even break, thereby affecting the service life of the cable. Therefore, a transmission cable for high and low temperature resistant instrument is proposed to solve the above problems. SUMMARY

[0004] The utility model aims at least to solve one of the technical problems existing in prior art, and therefore, the utility model provides a transmission cable for high and low temperature resistant instrument, which comprises a power line, an aerospace 1553B data bus, a shielded twisted pair group, a single-core group, a single-sided aluminum foil wrapping layer, a silver-plated woven shielding layer and a green tape wrapping sintering layer. The single-sided aluminum foil wrapping layer is wrapped on the outer side of the power line, the aerospace 1553B data bus, the shielded twisted pair group and the single-core group. The silver-plated woven shielding layer is wrapped on the single-sided aluminum foil wrapping layer. The green tape wrapping sintering layer is wrapped on the outermost layer of the silver-plated woven shielding layer.

[0005] Further, the power line comprises a first conductor and a power line insulation layer. The power line insulation layer is wrapped on the outer side of the first conductor and forms a first insulated core wire. A first shielding layer is arranged on the outer side of the three insulated core wires. A wrapping layer is arranged on the outer side of the first shielding layer.

[0006] Further, the aerospace 1553B data bus comprises a second conductor and a filler core. The second conductor is wrapped with a data bus insulation layer on the outer side and forms a second insulated core wire. A second shielding layer is wrapped on the outer side of the second insulated core wire and the filler core. A sheath layer is arranged on the outer side of the second shielding layer.

[0007] Further, the shielding twisted pair group comprises a third conductor and a shielding twisted pair group insulating layer, the shielding twisted pair group insulating layer is wrapped outside the third conductor to form a third insulated core wire, and the two third insulated core wires are twisted to each other, and the two third insulated core wires are wrapped with a third shielding layer outside.

[0008] Further, the single-core group comprises a fourth conductor, and the fourth conductor is wrapped with a single-core group insulating layer outside.

[0009] Further, the first conductor, the second conductor, the third conductor and the fourth conductor are silver-plated copper conductors.

[0010] Further, the wrapping layer and the raw material belt wrapping sintering layer are both wrapped and sintered by a tetrafluoroethylene film, and the raw material belt wrapping sintering layer adopts a double-layer wrapping structure and has a covering rate of 54%.

[0011] Further, the shielding woven density of the silver-plated woven shielding layer is greater than 90%.

[0012] The cable of the utility model has the advantages that the fluoroplastic insulating material is used as the cable outer skin, the cable can still work stably under a severe high-low temperature environment, is not prone to aging or rupture, a plurality of shielding structures are arranged in the cable, external electromagnetic interference can be effectively reduced, the stability of signal transmission is protected, the double-layer raw material belt wrapping sintering layer is adopted, the cable can withstand frequent bending without rupture, and the durability is stronger, the power line, the spaceflight 1553B data bus, the shielding twisted pair group and the single-core group and other components all adopt high-quality silver-plated copper conductors, and efficient and stable signal transmission is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole schematic view of the utility model.

[0014] 1, power line; 11, first conductor; 12, power line insulating layer; 13, first shielding layer; 14, wrapping layer; 2, spaceflight 1553B data bus; 21, second conductor; 22, filling core; 23, data bus insulating layer; 24, second shielding layer; 25, sheath layer; 3, shielding twisted pair group; 31, third conductor; 32, shielding twisted pair group insulating layer; 33, third shielding layer; 4, single-core group; 41, fourth conductor; 42, single-core group insulating layer; 5, single-sided aluminum foil wrapping layer; 6, silver-plated woven shielding layer; 7, raw material belt wrapping sintering layer. DETAILED DESCRIPTION

[0015] The embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0016] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0017] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0018] In the embodiments, Figure 1 A kind of high and low temperature resistant instrument transmission cable is given, including power line 1, space flight 1553B data bus 2, shielded twisted pair group 3, single-core group 4, single-sided aluminum foil wrapping layer 5, silver-plated woven shielding layer 6 and green tape wrapping sintering layer 7;The single-sided aluminum foil wrapping layer 5 is coated on the outer side of power line 1, space flight 1553B data bus 2, shielded twisted pair group 3 and single-core group 4, the silver-plated woven shielding layer 6 is coated on the single-sided aluminum foil wrapping layer 5, the green tape wrapping sintering layer 7 is coated on the outermost layer of silver-plated woven shielding layer 6, and the cable is sequentially power line 1, space flight 1553B data bus 2, shielded twisted pair group 3, single-core group 4, wrapped by single-sided aluminum foil wrapping layer 5, then sequentially coated by silver-plated woven shielding layer 6 and green tape wrapping sintering layer 7, multiple settings can provide multiple protection, ensure the stable transmission of signal and data under extreme temperature conditions.

[0019] Referring to Figure 1 Wherein, the power line 1 includes a first conductor 11 and a power line insulating layer 12, the power line insulating layer 12 is coated on the outer side of the first conductor 11 and forms a first insulated core wire, three insulated core wires are provided with a first shielding layer 13 on the outer side, and the first shielding layer 13 is provided with a wrapping layer 14 on the outer side;

[0020] Through the above structural arrangement, the first conductor 11 serves as the core of the power line and is responsible for power transmission, the power line insulating layer 12 tightly covers the outside of the first conductor 11 to form a first insulated core wire, ensuring that the current does not leak or short circuit during transmission, three such insulated core wires are combined together to form a whole structure to support multi-path power transmission or as a power supply line for different circuits, the first shielding layer 13 is arranged outside the three insulated core wires to shield external electromagnetic interference and protect the stability and accuracy of internal current transmission, and the wrapping layer 14 further wraps the outside of the first shielding layer 13 to provide additional mechanical protection and insulation performance, enhancing the durability and safety of the entire power line.

[0021] Referring to Figure 1 , wherein the aerospace 1553B data bus 2 includes a second conductor 21 and a filler core 22, the second conductor 21 is covered with a data bus insulating layer 23 outside to form a second insulated core wire, and a second shielding layer 24 is covered outside the second insulated core wire and the filler core 22, and a sheath layer 25 is arranged outside the second shielding layer 24;

[0022] Through the above structural arrangement, high-speed data transmission is realized through the second conductor 21, structural support and insulation performance are provided by the filler core 22 and the data bus insulating layer 23, electromagnetic shielding is realized by the second shielding layer 24, and finally the sheath layer 25 provides outer protection, ensuring the stable and reliable transmission of data in the aerospace environment. The sheath layer 25 is made of fluoroplastic material, and the product has the characteristics of high and low temperature resistance, waterproof and moistureproof, acid and alkali resistance, corrosion resistance, mildew resistance, and softness and bending resistance. The use temperature is -65~+250℃.

[0023] Referring to Figure 1 , wherein the shielding twisted pair group 3 includes a third conductor 31 and a shielding twisted pair group insulating layer 32, the shielding twisted pair group insulating layer 32 covers the outside of the third conductor 31 to form a third insulated core wire, and the two third insulated core wires are twisted and twisted with each other, and the two third insulated core wires are covered with a third shielding layer 33 outside;

[0024] Referring to Figure 1 , wherein the single-core group 4 includes a fourth conductor 41, and the fourth conductor 41 is covered with a single-core group insulating layer 42 outside;

[0025] Through the above structural arrangement, the single-core group 4 transmits current through the fourth conductor, and at the same time uses the single-core group insulating layer to provide electrical insulation and structural support, ensuring the stability and safety of the current during transmission.

[0026] Referring to Figure 1 , wherein the first conductor 11, the second conductor 21, the third conductor 31 and the fourth conductor 41 are all silver-plated copper conductors;

[0027] Through the above structural arrangement, in high-frequency signal transmission, due to the skin effect, the current is mainly concentrated on the surface of the conductor, and since the conductivity of silver is higher than that of copper, this makes the silver-plated copper conductor perform well in high-frequency applications, and at the same time, the corrosion resistance, high-temperature stability and excellent welding performance of silver make the silver-plated copper conductor have stronger product stability and production efficiency.

[0028] With reference to Figure 1 The wrapping layer 14 and the raw material belt wrapping sintering layer 7 are both wrapped and sintered by a polytetrafluoroethylene film, and the raw material belt wrapping sintering layer 7 adopts a double-layer wrapping structure, and the coverage rate is 54%.

[0029] Through the above structural arrangement, the wrapping layer 14 and the raw material belt wrapping sintering layer 7 provide effective insulation, protection and electromagnetic shielding for the internal conductor and signal through the close wrapping structure and the excellent performance of the polytetrafluoroethylene film.

[0030] With reference to Figure 1 The shielding woven density of the silver-plated woven shielding layer 6 is greater than 90%.

[0031] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0032] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high and low temperature resistant transmission cable for instruments, characterized in that: It includes power line (1), aerospace 1553B data bus (2), shielded twisted pair group (3), single-core group (4), single-sided aluminum foil wrapping layer (5), silver-plated woven shielding layer (6) and green tape wrapping sintering layer (7); the single-sided aluminum foil wrapping layer (5) is coated on the outer side of the power line (1), the aerospace 1553B data bus (2), the shielded twisted pair group (3) and the single-core group (4), the silver-plated woven shielding layer (6) is coated on the single-sided aluminum foil wrapping layer (5), and the green tape wrapping sintering layer (7) is coated on the outermost layer of the silver-plated woven shielding layer (6).

2. The high and low temperature resistant transmission cable for instrument according to claim 1, characterized in that: The power line (1) includes a first conductor (11) and a power line insulating layer (12), the power line insulating layer (12) is coated on the outer side of the first conductor (11) and forms a first insulated core wire, a first shielding layer (13) is arranged on the outer side of the three insulated core wires, and a wrapping layer (14) is arranged on the outer side of the first shielding layer (13).

3. The high and low temperature resistant transmission cable for instrument according to claim 2, characterized in that: The aerospace 1553B data bus (2) includes a second conductor (21) and a filling core (22), the second conductor (21) is coated with a data bus insulating layer (23) on the outer side and forms a second insulated core wire, a second shielding layer (24) is coated on the outer side of the second insulated core wire and the filling core (22), and a sheath layer (25) is arranged on the outer side of the second shielding layer (24).

4. The high and low temperature resistant transmission cable for instrument according to claim 3, characterized in that: The shielded twisted pair group (3) includes a third conductor (31) and a shielded twisted pair group insulating layer (32), the shielded twisted pair group insulating layer (32) is coated on the outer side of the third conductor (31) to form a third insulated core wire, and the two third insulated core wires are twisted and twisted with each other, and the outer side of the two third insulated core wires is coated with a third shielding layer (33).

5. The high and low temperature resistant transmission cable for instrument according to claim 4, characterized in that: The single-core group (4) includes a fourth conductor (41), and the fourth conductor (41) is coated with a single-core group insulating layer (42) on the outer side.

6. The high and low temperature resistant transmission cable for instrument as claimed in claim 5, wherein: The first conductor (11), the second conductor (21), the third conductor (31) and the fourth conductor (41) are all silver-plated copper conductors.

7. The high and low temperature resistant transmission cable for instrument according to claim 2, characterized in that: The wrapping layer (14) and the green tape wrapping sintering layer (7) are both sintered by wrapping with a tetrafluoroethylene film, and the green tape wrapping sintering layer (7) adopts a double-layer wrapping structure, and the coverage rate is 54%.

8. The high and low temperature resistant transmission cable for instrument according to claim 1, characterized in that: The shielding weaving density of the silver-plated woven shielding layer (6) is greater than 90%.

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