High-temperature-resistant fireproof cable

Abstract

The invention discloses a high-temperature-resistant fireproof cable, and relates to the technical field of cables, the inner side of a silicone rubber insulation sleeve is equidistantly provided with a plurality of fixed wire cores, the outer side ends of the fixed wire cores are sleeved with a cross-linked insulation sleeve, the outer side end of the cross-linked insulation sleeve is equidistantly provided with a plurality of expansion surface-increasing grooves, and the outer side end of the cross-linked insulation sleeve is equidistantly wound with soft pressure heat exchange strips; and a plurality of hollow double-pressure bags are adhered to the outer side ends of the plurality of soft-pressure heat exchange strips at equal intervals, and a plurality of positioning exchange strips are laid at the outer side ends of the plurality of hollow double-pressure bags at equal intervals. According to the utility model, the influence of the separation and the cavity on the operation of the cable caused by the influence of the production and the bending of the cable is avoided, and meanwhile, the compaction treatment and the heat homogenization treatment are performed on each part of the cable, thereby reducing the occurrence of single-point excessive heating, and effectively improving the service life and the operation stability of the cable.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a high temperature resistant and fireproof cable. Background Art

[0002] Cables are usually rope-like cables made of several or several groups of wires twisted together. Each group of wires are insulated from each other and are often twisted around a center. The entire outside is covered with a highly insulating covering. The cable has the characteristics of internal power supply and external insulation. High-temperature resistant and fire-resistant cables are special cables designed for high-temperature environments and occasions with strict fire protection requirements. They have excellent high-temperature resistance, flame retardancy and the ability to continue to supply power in fire situations.

[0003] However, because the cable is relatively fixed as a whole and cannot be adjusted during use, its internal components are easily separated when bent and squeezed, resulting in gaps, which affect the efficiency and effectiveness of heat conduction. At the same time, gaps are easily generated between the cable core and the insulating heat-conducting components due to transportation and cable bending, which leads to skin effect and proximity effect in the cable, causing excessive heat generation in the internal core, which greatly affects the stability of cable operation and service life. Summary of the invention

[0004] The present invention provides a high-temperature resistant and fireproof cable, which can effectively solve the problem proposed in the above background technology that the cable is relatively fixed as a whole inside and cannot be adjusted when in use, which leads to the separation of its internal components during bending and squeezing, resulting in gaps, affecting the efficiency and effect of heat conduction, and at the same time, gaps are easily generated between the cable core and the insulating heat-conducting components due to transportation and cable bending, resulting in skin effect and proximity effect in the cable, causing excessive heat generation of the internal core, which greatly affects the stability of cable operation and the service life.

[0005] To achieve the above object, the present invention provides the following technical solution: a high temperature resistant fireproof cable, comprising a silicone rubber insulation sleeve, wherein an internal pressure multi-protection assembly is arranged inside the silicone rubber insulation sleeve; The internal pressure multi-protection assembly includes a fixed wire core; A plurality of fixed wire cores are arranged at equal intervals on the inner side of the silicone rubber insulation sleeve, a cross-linked insulation sleeve is sleeved on the outer side of the fixed wire core, a plurality of expansion surface increasing grooves are arranged at equal intervals on the outer side of the cross-linked insulation sleeve, and a heat exchange drainage strip is embedded and installed inside the expansion surface increasing groove; The outer end of the cross-linked insulating sleeve is equidistantly wound with soft pressure heat exchange strips, the outer ends of multiple soft pressure heat exchange strips are equidistantly bonded with a number of hollow double pressure bags, and the outer ends of multiple hollow double pressure bags are equidistantly laid with a number of positioning exchange strips.

[0006] According to the above technical solution, the side ends of the plurality of positioning exchange strips are clamped with bottom hollow corrugated sleeves, the top of the inner side of the bottom hollow corrugated sleeve is equidistantly bonded with a plurality of contact heat exchange sheets, a telescopic elastic pad is installed at the inner side of the bottom hollow corrugated sleeve at the position corresponding to the contact heat exchange sheet, and a hollow filling bag is sleeved at one end of the inner side of the telescopic elastic pad; The inner ends of the telescopic elastic pad and the hollow filling bag are fitted with the outer ends of a plurality of positioning exchange strips, the inner diameter of the telescopic elastic pad is equal to the outer diameter of the positioning exchange strip, and there are four bottom hollow corrugated sleeves.

[0007] According to the above technical solution, a plurality of adhesive limiting stickers are equidistantly bonded to the outer ends of the plurality of bottom hollow corrugated sleeves, a plurality of adhesive limiting stickers are equidistantly bonded to the outer ends of the plurality of adhesive limiting stickers, a plurality of engaging limiting grooves are equidistantly opened at the outer ends of the engaging flame retardant strips, and an arc-shaped buckle is engaged with the inner side of the engaging limiting groove; The cross section of the adhesive limiting sticker is a corrugated type, the two arc-shaped buckles are sleeved and connected, and one end of the arc-shaped buckle is inserted and installed on the inner side of the bonding flame-retardant strip.

[0008] According to the above technical solution, a plurality of fitting wrapping tapes are evenly laid on the inner end of the silicone rubber insulating sleeve, the inner ends of the plurality of fitting wrapping tapes are connected to a fluoroplastic insulating sleeve, and a plurality of limiting shielding strips are evenly laid on the inner side of the fluoroplastic insulating sleeve; The outer ends of the fitted flame-retardant strip and the outer ends of the arc-shaped buckle are sleeved with flame-retardant insulating sleeves, and a plurality of flame-retardant insulating sleeves are sleeved with special-shaped elastic strips. One end of the special-shaped elastic strip is provided with a plurality of compression positioning holes at equal distances, and the side ends of the special-shaped elastic strip are provided with through-fitting holes at the positions corresponding to the compression positioning holes.

[0009] According to the above technical solution, a plurality of relay limit strips are equidistantly sleeved at the outer end of the special-shaped elastic strip, a special-shaped double-stick block is laid at the outer end of the relay limit strip corresponding to the position of the flame-retardant insulating sleeve, a plurality of combined exchange slots are equidistantly opened at the outer end of the special-shaped double-stick block, a connection exchange strip is embedded and installed inside the combined exchange slot, and a reinforced positioning column is equidistantly inserted and installed at one end of the special-shaped double-stick block; The inner end of the limiting shielding strip is respectively fitted with the outer end of the special-shaped double-stick block and the outer end of the connecting exchange strip, the side end of the heat exchange drainage strip is fitted with the side end of the soft pressure heat exchange strip, and the contact heat exchange plate is embedded and installed on the outside of the telescopic elastic pad.

[0010] According to the above technical solution, the longitudinal section of the special-shaped double-stick block is T-shaped, the inner end of the special-shaped double-stick block is fitted with the outer ends of two flame-retardant insulating sleeves, and the longitudinal section of the special-shaped elastic strip is Y-shaped.

[0011] According to the above technical solution, the longitudinal sections of the fitting wrapping tape, limiting shielding strip, soft pressure heat exchange strip, hollow double pressure bag, positioning exchange strip, contact heat exchange plate, hollow filling bag and arc buckle are all arc-shaped, and the longitudinal section of the combined exchange slot is U-shaped.

[0012] According to the above technical solution, a bending and fitting component is provided at the outer end of the silicone rubber insulating sleeve; The bending and fitting assembly includes a threaded arc block; A plurality of threaded arc blocks are symmetrically bonded to the outer end of the silicone rubber insulating sleeve, the outer end of the threaded arc block is connected to a combined bevel block through a thread, the outer end of the threaded arc block is connected to a clamping bevel block through a thread at a position corresponding to the combined bevel block, one end of the combined bevel block is welded with an inserting semicircular sleeve, and one end of the clamping bevel block is welded with a combined semicircular sleeve; The longitudinal sections of the inserted semicircular sleeve and the combined semicircular sleeve are L-shaped, and there are four of each of the combined oblique engagement block, the engaging oblique engagement block, the inserted semicircular sleeve and the combined semicircular sleeve.

[0013] According to the above technical solution, a plurality of positioning protection sheets are bonded equidistantly at the outer end of the silicone rubber insulating sleeve at the position corresponding to the threaded arc block; The inner and outer ends of the positioning protective sheet are both provided with insertion combination grooves, one end of the engaging bevel block is symmetrically provided with a combination limit groove, both ends of the combination bevel block are welded with porous combination blocks, one end of the combination bevel block and the engaging bevel block are both installed with heat insulation insertion sheets, and the outer ends of the multiple engaging semicircular sleeves and the combined semicircular sleeves are bonded with integrated protective stickers.

[0014] According to the above technical solution, the cross-sections of the combined oblique block and the engaging oblique block are trapezoidal, the porous combined block is embedded and installed inside the combined limiting groove, and one end of the combined oblique block is in contact with one end of the engaging oblique block; Two adjacent positioning protection sheets are connected by inserting into the combined groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. An internal pressure multi-protection component is provided, which conducts heat outward through the fixed wire core and the cross-linked insulating sleeve. The heat-expanding graphite in the hollow double-pressure bag expands at low temperature when heated, pushing the hollow double-pressure bag to extrude the inside and outside. The hollow double-pressure bag pushes the soft pressure heat exchange strip, the heat exchange drainage strip and the cross-linked insulating sleeve to push the fixed wire core inward, increasing the pressure on the surface of the fixed wire core, squeezing multiple wires against each other, and making them fit more tightly with the cross-linked insulating sleeve, reducing the skin effect and proximity effect caused by the gap, realizing the correction of the cable in the environment of its normal operating temperature, and when overheated, the thermal expansion can be used to The expanded graphite pushes the hollow double-pressure bags to squeeze each other, increasing the contact heat conduction area of ​​the single-point heat, improving the heat conduction effect, cooperating with the heat-expanded graphite in the hollow filling bag to squeeze the bottom hollow corrugated sleeve and the positioning exchange strip, and using the fitted flame-retardant strip and the arc buckle to fix the interior to achieve steady internal compression processing, using the heat extrusion to gradually discharge the air inside the cable, reducing the formation of air chambers due to residual air inside, affecting the heat exchange, improving the compactness of the cable during operation, so that the cable is still in an elastic state when laid and used, ensuring the convenience of laying and the stability of operation, and extending the service life; By expanding the surface-increasing grooves and heat exchange drainage strips to increase the internal heat exchange area, the wound soft pressure heat exchange strips are in contact with the hollow double pressure bags, cross-linked insulation sleeves and heat exchange drainage strips to achieve multi-point heat exchange and balance the internal heat. The bottom hollow corrugated sleeve, glued limit stickers and laminated flame retardant strips are used to increase the heat conduction area in the middle, and the extrusion is used to make the fit tighter to ensure the maximum heat exchange area, improve the heat exchange efficiency, and achieve uniform heat treatment and steady heat dissipation treatment inside the cable. Special-shaped elastic strips, special-shaped double stickers, compression positioning holes and penetrations are used. The matching holes provide elastic support to the cable center, so that it can be twisted when bent to achieve balanced force. During operation, the cable can be isolated through the middle air intake and the side ends to avoid being affected by the air chamber while achieving external air cooling and heat exchange, further improving the heat dissipation effect. By fitting the wrapping tape, fluoroplastic insulation sleeve, flame-retardant insulation sleeve, hollow double-pressure bag, hollow filling bag and soft-pressure heat exchange strip, a multi-section flame-retardant fireproof belt is formed from the outside to the inside, which improves the fire-retardant effect of the cable and further ensures the stability and safety of the cable operation. Through the expansion and extrusion of internal components due to heat, the extrusion of the wire core inside the cable and the external protective components is restricted, the skin effect and proximity effect are reduced, and the influence of air on the heat dissipation of the cable is reduced. With the cooperation of multi-segment heat conduction and contact heat balancing components, the center is isolated and the solid air flow is used for heat conduction to achieve multi-position heat exchange treatment, which effectively solves the problem in the prior art that the cable is fixed as a whole and cannot be filled by itself, resulting in separation and cavity caused by production and bending of the cable, which affects the cable operation. At the same time, the various components of the cable are compacted and heat-evenly treated to reduce the occurrence of excessive heating at a single point, effectively improving the service life and stability of the cable.

[0016] 2. A bending and fitting component is provided, and the threaded arc block and the positioning protection sheet are both bonded to the outer end of the silicone rubber insulating sleeve, and the positioning protection sheet is connected by inserting the combined groove to realize the protection treatment of the outer insulation layer of the cable, and the expansion and contraction combination treatment between multiple positioning protection sheets and the inserted combined grooves is realized to realize the simultaneous treatment of bending stretching and bending contraction, so as to realize full protection of the outer side of the cable, and isolate the insulation layer at the bending position of the cable, and the threaded arc block, the combined bevel block and the engaging bevel block are connected by the thread through the multi-porous combination block and the combined limit groove, so that the plug-in semicircular sleeve and the combined semicircular sleeve are fitted together, and multiple heat-insulating insert sheets are fitted together, and the plug-in semicircular sleeve and the combined semicircular sleeve are bonded and limited by the integrated protective sticker, and the soft plug-in semicircular sleeve, the combined semicircular sleeve, the heat-insulating insert sheet and the integrated protective sticker are elastically deformed, and the synchronous elastic deformation and the outer four-stage protection treatment are used to reduce the stretching and folding deformation of the silicone rubber insulating sleeve on the outside of the cable caused by bending, which makes the bending part easy to be damaged by external erosion, thereby affecting the service life of the cable.

[0017] In summary, through the cooperation of the internal pressure multi-protection components and the bending and fitting components, the internal multi-segment limiting extrusion is used to reduce the occurrence of excessive internal heating, and the multi-point heat exchange treatment and the contact of multiple groups of components are combined to achieve internal insulation and fire prevention treatment, thereby improving the high temperature resistance of the cable and its fire resistance. The external wrapping components are used to isolate and protect the insulation layer at the bending position, reducing the influence of the external environment on the bending position, which may cause the bending position to be easily damaged, thereby improving the stability of the cable operation and the life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] In the attached picture: Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2It is a schematic structural diagram of the internal pressure multi-protection assembly of the present invention; Figure 3 It is a schematic diagram of the installation structure of the bottom hollow corrugated sleeve of the present invention; Figure 4 It is a schematic diagram of the installation structure of the fluoroplastic insulating sleeve of the present invention; Figure 5 It is a schematic diagram of the installation structure of the flame-retardant insulating sleeve of the present invention; Figure 6 is a schematic structural diagram of the bending and laminating assembly of the present invention; Figure 7 It is a schematic diagram of the installation structure of the combined semicircular sleeve of the present invention; Figure 8 It is a schematic diagram of the installation structure of the heat insulation insert of the present invention; Numbers in the figure: 1, silicone rubber insulation sleeve; 2. Internal pressure multi-protection assembly; 201. Fixed core; 202. Fitting winding tape; 203. Fluoroplastic insulation sleeve; 204. Restricted shielding strip; 205. Cross-linked insulation sleeve; 206. Extended surface increasing groove; 207. Heat exchange drainage strip; 208. Soft pressure heat exchange strip; 209. Hollow double pressure bag; 210. Positioning exchange strip; 211. Bottom empty corrugated sleeve; 212. Contact heat exchange sheet; 213. Telescopic elastic pad; 214, hollow filling bag; 215, gluing restriction sticker; 216, laminating flame retardant strip; 217, clamping limit groove; 218, arc buckle; 219, flame retardant insulating sleeve; 220, special-shaped elastic strip; 221, compression positioning hole; 222, through-fitting hole; 223, relay limit strip; 224, special-shaped double sticker block; 225, combined exchange slot; 226, connecting exchange strip; 227, strengthening positioning column; 3. Bending and fitting components; 301. Threaded arc block; 302. Combined oblique fitting block; 303. Engaging oblique fitting block; 304. Inserting semicircular sleeve; 305. Combined semicircular sleeve; 306. Positioning protective sheet; 307. Inserting combined groove; 308. Combined limiting groove; 309. Porous combined block; 310. Heat-insulating insert sheet; 311. Integrated protective sticker. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Example: Figure 1-8 As shown, the present invention provides a technical solution, a high temperature resistant fireproof cable, comprising a silicone rubber insulating sleeve 1, an internal pressure multi-protection component 2 is arranged inside the silicone rubber insulating sleeve 1; The internal pressure multi-protection component 2 includes a fixed wire core 201, a fitting winding tape 202, a fluoroplastic insulating sleeve 203, a limiting shielding strip 204, a cross-linked insulating sleeve 205, an extended surface increasing groove 206, a heat exchange drainage strip 207, a soft pressure heat exchange strip 208, a hollow double pressure bag 209, a positioning exchange strip 210, a bottom hollow corrugated sleeve 211, a contact heat exchange sheet 212, a telescopic elastic pad 213, a hollow filling bag 214, a glued limiting sticker 215, a fitting flame retardant strip 216, a clamping limiting groove 217, an arc buckle 218, a flame retardant insulating sleeve 219, a special-shaped elastic strip 220, a compression positioning hole 221, a through-matching hole 222, a relay limiting strip 223, a special-shaped double sticker block 224, a combined exchange slot 225, a connecting exchange strip 226 and a reinforced positioning column 227; Several fixed wire cores 201 are equidistantly arranged on the inner side of the silicone rubber insulating sleeve 1, and several fitting wrapping tapes 202 are equidistantly laid on the inner side end of the silicone rubber insulating sleeve 1. The fitting wrapping tapes 202 are made of mica, and the inner side ends of the multiple fitting wrapping tapes 202 are connected to fluoroplastic insulating sleeves 203. Several limiting shielding strips 204 are equidistantly laid on the inner side of the fluoroplastic insulating sleeve 203, and the inner side ends of the limiting shielding strips 204 are respectively fitted with the outer side ends of the special-shaped double-sticking blocks 224 and the outer side ends of the connecting exchange strips 226 to achieve alignment and fit, thereby ensuring the stability of the overall limit and support; The outer end of the fixed wire core 201 is sleeved with a cross-linked insulating sleeve 205, and a plurality of expansion surface increasing grooves 206 are equidistantly provided at the outer end of the cross-linked insulating sleeve 205. A heat exchange drainage strip 207 is embedded and installed inside the expansion surface increasing groove 206. The side end of the heat exchange drainage strip 207 is fitted with the side end of the soft pressure heat exchange strip 208 to achieve internal hot pressing treatment, which is beneficial to the outward heat conduction and the heat absorption of the components, and realizes the pressing positioning and sealing treatment. The outer end of the cross-linked insulating sleeve 205 is equidistantly wrapped with a soft pressure heat exchange strip 208, and the material of the soft pressure heat exchange strip 208 is mica. A plurality of hollow double pressure bags 209 are equidistantly bonded to the outer ends of the plurality of soft pressure heat exchange strips 208, and a plurality of positioning exchange strips 210 are equidistantly laid at the outer ends of the plurality of hollow double pressure bags 209; The side ends of multiple positioning exchange strips 210 are clamped with bottom hollow corrugated sleeves 211, and there are four bottom hollow corrugated sleeves 211 to ensure the stability of the sleeve sealing and sleeve restriction. Several contact heat exchange sheets 212 are equidistantly bonded to the top of the inner side of the bottom hollow corrugated sleeve 211, and a telescopic elastic pad 213 is installed on the inner side of the bottom hollow corrugated sleeve 211 at the position corresponding to the contact heat exchange sheet 212. A hollow filling bag 214 is sleeved on one end of the inner side of the telescopic elastic pad 213, and the contact heat exchange sheet 212 is embedded and installed on the outer side of the telescopic elastic pad 213. The inner ends of the telescopic elastic pad 213 and the hollow filling bag 214 are fitted with the outer ends of multiple positioning exchange strips 210, and the inner diameter of the telescopic elastic pad 213 is equal to the outer diameter of the positioning exchange strip 210, so as to realize multi-segment clamping support and clamping limit, so that the tightness of the internal combination restriction and the outer sides of multiple bottom hollow corrugated sleeves 211 are greatly improved. A plurality of adhesive limiting stickers 215 are equidistantly bonded to the side ends, and a bonding flame retardant strip 216 is equidistantly bonded to the outer ends of the plurality of adhesive limiting stickers 215. A plurality of engaging limiting grooves 217 are equidistantly provided at the outer ends of the bonding flame retardant strip 216, and an arc-shaped buckle 218 is engaged with the inner side of the engaging limiting groove 217. The longitudinal sections of the bonding wrapping tape 202, the limiting shielding strip 204, the soft pressure heat exchange strip 208, the hollow double pressure bag 209, the positioning exchange strip 210, the contact heat exchange sheet 212, the hollow filling bag 214 and the arc-shaped buckle 218 are all arc-shaped, so as to ensure the steady processing of the alignment and bonding. The cross section of the adhesive limiting sticker 215 is a corrugated type, and the two arc-shaped buckles 218 are sleeved and connected, and one end of the arc-shaped buckle 218 is inserted and installed on the inner side of the bonding flame retardant strip 216, so as to realize the internal side card positioning and side card restriction, so as to ensure the tightness of the connection. The outer ends of the flame retardant strip 216 and the arc buckle 218 are sleeved with a flame retardant insulating sleeve 219, and a plurality of flame retardant insulating sleeves 219 are sleeved with a special-shaped elastic strip 220. One end of the special-shaped elastic strip 220 is provided with a plurality of compression positioning holes 221 at equal intervals, and a through-matching hole 222 is provided at the side end of the special-shaped elastic strip 220 corresponding to the position of the compression positioning hole 221. The outer end of the special-shaped elastic strip 220 is sleeved with a plurality of relay limiting strips 223 at equal intervals, and a special-shaped double-sticking block 224 is laid at the outer end of the relay limiting strip 223 corresponding to the position of the flame retardant insulating sleeve 219. The longitudinal section of the special-shaped double-sticking block 224 is T-shaped. The inner end of the patch 224 is fitted with the outer ends of the two flame-retardant insulating sleeves 219, and the longitudinal section of the special-shaped elastic strip 220 is Y-shaped, which can achieve isolation and extrusion restrictions on multiple flame-retardant insulating sleeves 219, so that they can be stably elastically limited during bending and twisting, and achieve snap-fit ​​support and snap-fit ​​positioning. A number of combined exchange grooves 225 are equidistantly provided at the outer end of the special-shaped double patch 224, and the longitudinal section of the combined exchange groove 225 is U-shaped, which achieves the stability of positioning snap fit and positioning support. A connecting exchange strip 226 is embedded and installed on the inner side of the combined exchange groove 225, and a reinforcing positioning column 227 is equidistantly inserted and installed at one end of the special-shaped double patch 224.

[0022] A bending and fitting component 3 is provided at the outer end of the silicone rubber insulating sleeve 1; The bending and fitting assembly 3 includes a threaded arc block 301, a combined oblique block 302, a clamping oblique block 303, an inserting semicircular sleeve 304, a combined semicircular sleeve 305, a positioning protective sheet 306, an inserting combined groove 307, a combined limiting groove 308, a porous combined block 309, a heat-insulating insert sheet 310 and an integrated protective sheet 311; A plurality of threaded arc blocks 301 are symmetrically bonded to the outer end of the silicone rubber insulating sleeve 1 at equal distances, and a combined oblique block 302 is threadedly connected to the outer end of the threaded arc block 301, and a clamping oblique block 303 is threadedly connected to the outer end of the threaded arc block 301 at a position corresponding to the combined oblique block 302, and an inserting semicircular sleeve 304 is welded to one end of the combined oblique block 302, and a combined semicircular sleeve 305 is welded to one end of the clamping oblique block 303, and the longitudinal sections of the inserting semicircular sleeve 304 and the combined semicircular sleeve 305 are L-shaped, and there are four combined oblique blocks 302, four clamping oblique blocks 303, four inserting semicircular sleeves 304 and four combined semicircular sleeves 305, so as to achieve the stability of multiple groups of combined limiting and combined fixing; A plurality of positioning protective sheets 306 are bonded equidistantly at the outer end of the silicone rubber insulating sleeve 1 at the position of the threaded arc block 301. The inner and outer ends of the positioning protective sheets 306 are provided with insertion combination grooves 307. Two adjacent positioning protective sheets 306 are connected by inserting the combination grooves 307 to achieve elastic support and limit, thereby ensuring the stability of the clamping fixation and the clamping seal. One end of the clamping oblique block 303 is symmetrically provided with a combination limit groove 308. Both ends of the combined oblique block 302 are welded with porous combination blocks 309. The cross-sections of the bevel block 302 and the snap-fit ​​bevel block 303 are trapezoidal. The porous combination block 309 is embedded and installed on the inner side of the combination limit groove 308. One end of the combination bevel block 302 is fitted with one end of the snap-fit ​​bevel block 303 to achieve multiple sets of snap-fit ​​alignment and snap-fit ​​restriction. In conjunction with the threaded positioning support, the connection of the components is restricted. One end of the combination bevel block 302 and the snap-fit ​​bevel block 303 are both installed with a heat insulation insert 310, and the outer ends of multiple inserted semicircular sleeves 304 and the combination semicircular sleeves 305 are bonded with integrated protective stickers 311.

[0023] The working principle and use process of the present invention are as follows: when laying the cable, when the cable is bent and laid, the staff will adhere the four threaded arc blocks 301 to the outer end of the silicone rubber insulating sleeve 1, adhere the positioning protection sheet 306 to the bending position of the cable, and use the insertion combination groove 307 to fit the positioning protection sheet 306 to achieve the protection treatment of the outer insulation layer of the cable, place the combined oblique block 302 and the engaging oblique block 303 to the inner side of the silicone rubber insulating sleeve 1, and insert the porous combined block 309 at the position of the combined oblique block 302 into the inner side of the combined limiting groove 308 at the side end of the engaging oblique block 303, so that the combined oblique block 302 and the engaging oblique block 303 are connected. The oblique block 303 is sleeved and connected, and the threaded arc block 301, the combined oblique block 302 and the clamping oblique block 303 are assembled together by using threads, so that the combined oblique block 302 and the clamping oblique block 303 are fixed to the outer end of the silicone rubber insulating sleeve 1, and when the combined oblique block 302 and the clamping oblique block 303 are rotated and sleeved with the threaded arc block 301, the inserted semicircular sleeve 304 and the combined semicircular sleeve 305 are gradually moved and sleeved, and at the same time, the four heat insulation inserts 310 are embedded and sleeved together, and the side ends of the heat insulation inserts 310 are fitted with the side ends of the combined oblique block 302 and the clamping oblique block 303 to achieve external isolation protection; After the fixation is completed, the plug-in semicircular sleeve 304 and the combined semicircular sleeve 305 are bonded and combined by integrating the protective sticker 311. After the bonding is completed, the staff bends the cable, and the cable drives the threaded arc block 301, the combined oblique block 302 and the engaging oblique block 303 to be synchronously transposed. At this time, the positioning protective sheet 306 is squeezed against each other, and the insertion combination groove 307 is used to elastically expand and contract the stretching position and the pressing position of the positioning protective sheet 306, and the soft plug-in semicircular sleeve 304, the combined semicircular sleeve 305, the heat-insulating insert sheet 310 and the integrated protective sticker 311 are elastically deformed. The synchronous elastic deformation and the outer four-stage protection treatment are used to reduce the stretching and folding deformation of the silicone rubber insulating sleeve 1 on the outside of the cable caused by bending, which makes the bending part susceptible to external erosion and damage, affecting the service life of the cable; When the cable is running, the fixed core 201 is used for conducting electricity. When the fixed core 201 transmits electricity, the core will generate heat due to its own resistance. The heat generated by the fixed core 201 is transferred to the position of the extended surface groove 206 along the cross-linked insulating sleeve 205. The extended surface groove 206 and the heat exchange drainage strip 207 are used to increase the area of ​​heat conduction from the inside of the cable to the outside. At the same time, the heat exchange drainage strip 207 is used to increase its heat conduction efficiency, thereby improving the internal cooling and controlling the internal operating environment. The heat is transferred to the position of the soft pressure heat exchange strip 208 through the cross-linked insulating sleeve 205 and the heat exchange drainage strip 207, and the heat is transferred to the inside of the hollow double pressure bag 209 by the soft pressure heat exchange strip 208. When the hollow double pressure bag 209 is heated, the heat expansion graphite inside it expands. The heat expansion graphite will expand above 80 degrees Celsius, with a low starting expansion temperature between 80°C and 150°C, and an expansion range of 80°C to 900°C. The operating temperature of the cable is 70℃ to 130℃. Under this temperature environment, the heat-expanding graphite pushes the hollow double-pressure bag 209 to expand and squeeze at both ends inside and outside. The hollow double-pressure bag 209 pushes the soft-pressure heat exchange strip 208, the heat exchange drainage strip 207 and the cross-linked insulation sleeve 205 to squeeze inward so that the side end of the cross-linked insulation sleeve 205 is fully fitted with the outer end of the fixed core 201. At the same time, the fixed core 201 is a twisted cable. Through continuous internal pressure treatment, the conductors between the fixed cores 201 are Mutually fit, reduce the extra heat of the fixed core 201 caused by the skin effect and proximity effect between multiple groups of wires, and improve the temperature control effect. When the cable is overheated for a short time, the overheat temperature of the cable is 160°C to 250°C, and the expansion degree of the thermal expansion graphite increases, pushing the hollow double pressure bag 209 to be further squeezed toward the side end, further compacting the cable, and through the mutual squeezing of multiple hollow double pressure bags 209, a steady fit and alignment is achieved, ensuring the area of ​​single-point heat conduction, and improving the effect and efficiency of heat conduction; By using the heat exchange drainage strip 207, the soft pressure heat exchange strip 208 and the hollow double pressure bag 209, the soft pressure heat exchange strip 208 is wound and obliquely contacted to achieve contact between a single soft pressure heat exchange strip 208 and multiple heat exchange drainage strips 207 and the hollow double pressure bag 209, so as to achieve thermal balance treatment, increase the heat conduction area and the heating position, and the internal heat is transmitted along the positioning exchange strip 210 to the telescopic elastic pad 213 at the position of the bottom hollow corrugated sleeve 211 and the side end of the hollow filling bag 214. At this time, the heat expansion graphite in the hollow filling bag 214 pushes the hollow filling bag 214 to expand and push the hollow filling bag 214 to the inside and outside, and presses the contact heat exchange sheet 212 to the bottom hollow corrugated sleeve 211 to achieve thermal pressing treatment, and increase the heat exchange contact area through the bottom hollow corrugated sleeve 211, so as to improve the efficiency and effect of the counter heat exchange; During thermal expansion, the bottom hollow corrugated sleeve 211 is squeezed outwards, and at this time, the adhesive limiting sticker 215 is clamped to the combination of the laminating flame retardant strip 216 and the bottom hollow corrugated sleeve 211, and the arc buckle 218 on the inner side of the clamping limit groove 217 is used to position and clamp the laminating flame retardant strip 216, the adhesive limiting sticker 215 and the bottom hollow corrugated sleeve 211, so as to achieve steady limiting and fixing, so that the internal expansion can be steadily squeezed and fixed during the outward expansion process, and the flame-retardant insulating sleeve 219 is used for limiting and fixing, so that the internal thermal expansion is achieved, and the multiple components are squeezed against each other, so as to reduce the gaps between the various components of the cable, and the thermal expansion squeezes out the air outwards, so as to reduce the air chamber generated by the combination of the components, and affect the effect of heat conduction to the outside; The special-shaped elastic strip 220 and the special-shaped double sticker 224 are positioned and supported by the relay limit strip 223. When the cable is bent and twisted, the compression positioning hole 221 and the through-matching hole 222 in the middle are used for extrusion treatment, and the air is diverted. The internal twisting and pressing treatment of the cable is realized by air extrusion and three groups of flame-retardant insulating sleeves 219 are used for extrusion treatment. The inside of the cable is heat-conducted through the air flow of the middle hole. The heat dissipation area of ​​the special-shaped double sticker 224 is increased by the combined exchange slot 225. The connection exchange strip 226 and the limiting shielding strip 204 are coordinated to the outside to realize the coordination of multiple groups of heat conduction treatment, so as to ensure the stability of heat conduction from the inside to the outside during daily operation of the cable. The outer side of the cable is insulated and flame-retarded by means of the silicone rubber insulating sleeve 1, the bonding wrapping tape 202 and the fluoroplastic insulating sleeve 203, and its external heat resistance is improved, and the heat resistance effect is improved. The silicone rubber insulating sleeve 1, the fluoroplastic insulating sleeve 203, the cross-linked insulating sleeve 205 and the flame-retardant insulating sleeve 219 are gradually flame-retarded from the outside to the inside, and the bonding wrapping tape 202 and the bonding flame-retardant strip 216 are used for flame-retardant treatment. The heat-expandable graphite in the hollow double-pressure bag 209 and the hollow filling bag 214 is carbonized to form an insulating carbon layer when an external fire occurs, thereby improving the heat insulation and flame-retardant effects, ensuring that the insulation effect of the cable can still be guaranteed in a high temperature environment and a fire environment, improving the stability of the cable operation, and through multiple groups of coordinated treatments, improving the heat exchange and high temperature resistance effects, and extending the service life of the cable.

[0024] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high temperature resistant fireproof cable, comprising a silicone rubber insulating sleeve (1), characterized in that: An internal pressure multi-protection component (2) is arranged inside the silicone rubber insulating sleeve (1); The internal pressure multi-protection component (2) comprises a fixed wire core (201); A plurality of fixed wire cores (201) are arranged at equal intervals on the inner side of the silicone rubber insulating sleeve (1); a cross-linked insulating sleeve (205) is sleeved on the outer side of the fixed wire core (201); a plurality of expansion grooves (206) are arranged at equal intervals on the outer side of the cross-linked insulating sleeve (205); a heat exchange drainage strip (207) is embedded and installed on the inner side of the expansion groove (206); The outer end of the cross-linked insulating sleeve (205) is equidistantly wound with soft pressure heat exchange strips (208), the outer ends of the plurality of soft pressure heat exchange strips (208) are equidistantly bonded with a plurality of hollow double pressure bags (209), and the outer ends of the plurality of hollow double pressure bags (209) are equidistantly laid with a plurality of positioning exchange strips (210).

2. A high temperature resistant fireproof cable according to claim 1, characterized in that: The side ends of the plurality of positioning exchange strips (210) are clamped with bottom hollow corrugated sleeves (211), the top end of the inner side of the bottom hollow corrugated sleeve (211) is equidistantly bonded with a plurality of contact heat exchange sheets (212), a telescopic elastic pad (213) is installed at the position of the inner side of the bottom hollow corrugated sleeve (211) corresponding to the contact heat exchange sheet (212), and one end of the inner side of the telescopic elastic pad (213) is sleeved with a hollow filling bag (214); The inner ends of the telescopic elastic pad (213) and the hollow filling bag (214) are fitted with the outer ends of the plurality of positioning exchange strips (210); the inner diameter of the telescopic elastic pad (213) is equal to the outer diameter of the positioning exchange strips (210); and there are four bottom hollow corrugated sleeves (211).

3. A high temperature resistant fireproof cable according to claim 2, characterized in that: A plurality of adhesive limiting stickers (215) are equidistantly bonded to the outer ends of the plurality of bottom hollow corrugated sleeves (211); a plurality of adhesive flame retardant strips (216) are equidistantly bonded to the outer ends of the plurality of adhesive limiting stickers (215); a plurality of locking limit grooves (217) are equidistantly formed at the outer ends of the locking limit grooves (217); and an arc-shaped buckle (218) is locked inside the locking limit grooves (217); The cross section of the adhesive limiting sticker (215) is corrugated, the two arc-shaped buckles (218) are sleeved and connected, and one end of the arc-shaped buckle (218) is inserted and installed on the inner side of the bonding flame retardant strip (216).

4. A high temperature resistant fireproof cable according to claim 3, characterized in that: A plurality of evenly spaced fitting wrapping tapes (202) are laid on the inner end of the silicone rubber insulation sleeve (1); a plurality of evenly spaced fitting wrapping tapes (202) are connected to the inner ends of the plurality of evenly spaced fitting wrapping tapes (202) to form a fluoroplastic insulation sleeve (203); and a plurality of evenly spaced limiting shielding strips (204) are laid on the inner side of the fluoroplastic insulation sleeve (203); The outer ends of the fitted flame-retardant strip (216) and the outer ends of the arc-shaped buckle (218) are sleeved with flame-retardant insulating sleeves (219), and a plurality of flame-retardant insulating sleeves (219) are sleeved with special-shaped elastic strips (220), one end of the special-shaped elastic strip (220) is provided with a plurality of compression positioning holes (221) at equal intervals, and a through-fitting hole (222) is provided at the side end of the special-shaped elastic strip (220) at a position corresponding to the compression positioning hole (221).

5. A high temperature resistant fireproof cable according to claim 4, characterized in that: The outer end of the special-shaped elastic strip (220) is sleeved with a plurality of relay limit strips (223) at equal distances, the outer end of the relay limit strip (223) is provided with a special-shaped double-stick block (224) at a position corresponding to the flame-retardant insulating sleeve (219), the outer end of the special-shaped double-stick block (224) is provided with a plurality of combination exchange slots (225) at equal distances, the inner side of the combination exchange slot (225) is embedded with a connection exchange strip (226), and one end of the special-shaped double-stick block (224) is inserted with a reinforcement positioning column (227) at equal distances; The inner ends of the limiting shielding strip (204) are respectively fitted with the outer ends of the special-shaped double-sticking block (224) and the outer ends of the connecting exchange strip (226); the side ends of the heat exchange drainage strip (207) are fitted with the side ends of the soft pressure heat exchange strip (208); and the contact heat exchange sheet (212) is embedded and installed on the outer side of the telescopic elastic pad (213).

6. A high temperature resistant fireproof cable according to claim 5, characterized in that: The longitudinal section of the special-shaped double-stick block (224) is T-shaped, the inner end of the special-shaped double-stick block (224) is in contact with the outer ends of the two flame-retardant insulating sleeves (219), and the longitudinal section of the special-shaped elastic strip (220) is Y-shaped.

7. A high temperature resistant fireproof cable according to claim 5, characterized in that: The longitudinal cross-sections of the fitting wrapping tape (202), the limiting shielding strip (204), the soft pressure heat exchange strip (208), the hollow double pressure bag (209), the positioning exchange strip (210), the contact heat exchange sheet (212), the hollow filling bag (214) and the arc buckle (218) are all arc-shaped, and the longitudinal cross-section of the combined exchange slot (225) is U-shaped.

8. A high temperature resistant fireproof cable according to claim 1, characterized in that: The outer end of the silicone rubber insulating sleeve (1) is provided with a bending and fitting component (3); The bending and laminating component (3) comprises a threaded arc block (301); The outer end of the silicone rubber insulating sleeve (1) is symmetrically bonded with a plurality of threaded arc blocks (301), the outer end of the threaded arc block (301) is threadedly connected to a combined bevel block (302), the outer end of the threaded arc block (301) is threadedly connected to a clamping bevel block (303) at a position corresponding to the combined bevel block (302), one end of the combined bevel block (302) is welded with an inserting semicircular sleeve (304), and one end of the clamping bevel block (303) is welded with a combined semicircular sleeve (305); The longitudinal sections of the inserted semicircular sleeve (304) and the combined semicircular sleeve (305) are L-shaped, and there are four of each of the combined oblique engagement block (302), the engaging oblique engagement block (303), the inserted semicircular sleeve (304) and the combined semicircular sleeve (305).

9. A high temperature resistant fireproof cable according to claim 8, characterized in that: A plurality of positioning protection sheets (306) are bonded at equal distances to the outer end of the silicone rubber insulating sleeve (1) at positions corresponding to the threaded arc block (301); The inner and outer ends of the positioning protective sheet (306) are both provided with insertion combination grooves (307); one end of the engaging bevel block (303) is symmetrically provided with combination limit grooves (308); both ends of the combined bevel block (302) are welded with multi-hole combination blocks (309); one end of the combined bevel block (302) and the engaging bevel block (303) are both provided with heat insulation insertion sheets (310); and the outer ends of the plurality of engaging semicircular sleeves (304) and the combined semicircular sleeves (305) are bonded with integrated protective stickers (311).

10. A high temperature resistant fireproof cable according to claim 8, characterized in that: The cross-sections of the combined oblique engagement block (302) and the engaging oblique engagement block (303) are trapezoidal, the porous combined block (309) is embedded and installed inside the combined limiting groove (308), and one end of the combined oblique engagement block (302) is in contact with one end of the engaging oblique engagement block (303); Two adjacent positioning protection sheets (306) are connected by being inserted into the combination groove (307).

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