High-flame-retardant B1-class cable integrated production device with intelligent induction

Abstract

The integrated production device for highly flame-retardant Class B cables with intelligent induction includes the first mineral isolation layer extruder, high-temperature drying device, glue coating device, radio frequency label pasting machine, second mineral isolation layer extruder and constant temperature baking oven through which the flame-retardant cable passes in sequence, and the end of the flame-retardant cable is towed by a traction machine. The RFID radio frequency electronic tag is embedded in the isolation layer through the segmented construction of the mineral isolation layer, and the radio frequency label pasting machine and the front and rear end equipment ensure that the radio frequency electronic tag is evenly distributed in the axial and radial directions and is in close contact with the mineral layer to prevent the generation of air gaps that affect the flame retardant effect. This device can produce intelligent induction cables in an automated production line.

Description

Technical Field

[0001] The present invention relates to the technical field of cable manufacturing equipment, and particularly relates to a high-flame-retardant B1-level cable integrated production device with intelligent induction. Background Art

[0002] With the development of society, the progress of technology, and the continuous improvement of people's living standards, the construction in the fields of architecture and engineering has advanced rapidly. This has led to the development of current transportation road bridges, civil buildings, office buildings, etc. towards the large-scale and intelligent fields, resulting in the continuous improvement of the power distribution technology for large buildings. The safety standard levels of large buildings are generally stricter than those of ordinary small and medium-sized buildings. In the power distribution and transmission, B1-level flame-retardant cables are widely used due to their excellent safety performance in fire scenarios. Although B1-level flame-retardant cables can play a role in flame retardancy and preventing the spread of fire in case of a fire, they are not completely non-combustible. Their values such as flame spread, peak heat release rate, total heat release within 1200S, and combustion growth rate index are significantly better than those of ordinary cables. The power transmission function of cables is their fundamental mission. In high-rise and super-high-rise buildings, their power is completely transmitted from the bottom upwards. Although these buildings are equipped with emergency power supplies in case of a fire, they cannot meet all requirements. However, if many high-power devices such as elevators, lighting systems, fire pumps, and building automation systems BAS can be normally powered by the building power cables, it can improve the evacuation efficiency of people in case of a fire. However, the general power handling measure in case of a fire is to cut off the power. This seemingly irreconcilable contradiction between the two measures. If the normal power supply can be ensured as much as possible under the condition of ensuring safety, it can greatly improve the safety and intelligence level of super-high-rise buildings.

[0003] In terms of flame-retardant power cables, if the safety situation inside the cable during a fire can be monitored to control whether to cut off the power, the above contradiction can be well solved, that is, ensuring safety and maximizing the normal power supply.

[0004] There are also similar cables in the prior art. For example, Chinese Patent Document CN 109461531A discloses an intelligent early warning type fireproof, waterproof, and flame-retardant cable. By arranging a monitoring core outside the cable, when a fire occurs, the monitoring core is burned out while burning out the outer sheath, and a detection device is used to cut off the power supply of the cable. However, flame-retardant cables generally have multiple fire prevention measures. The monitoring core arranged outside cannot directly represent the true situation of the power cable at the inner core. Often, after the detection core is burned out, the inner core is still very safe due to the effects of fireproof mud, armor, mica winding layer, and flame-retardant filler. At this time, cutting off the power supply cannot provide power under safe conditions to the maximum extent.

[0005] By integrating RFID electronic tags and temperature sensing circuits in cables, and then reading the information of the electronic tags through a reader outside the cable to sense the current temperature in the cable, a more scientific fire prevention strategy can be specified to maximize the safety of power supply and power supply. This is a feasible solution. There is currently no ready-made technology for the integration of RFID electronic tags and cables, let alone corresponding production equipment. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a highly flame-retardant B1-level cable integrated production device with intelligent sensing, which can produce flame-retardant cables with intelligent sensing.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] The integrated production device of high-flame-retardant Class B cables with intelligent sensing includes a first mineral isolation layer extruder, a high-temperature drying device, a gluing device, a radio frequency label pasting machine, a second mineral isolation layer extruder and a constant temperature baking oven through which the flame-retardant cable passes in sequence, and the end of the flame-retardant cable is towed by a traction machine.

[0009] The above-mentioned flame retardant cable includes a wire core, a fire-resistant layer wrap, a first flame retardant filling layer, a metal armor, a second flame retardant filling layer, an intelligent sensing device, a third flame retardant filling layer and a flame retardant sheath arranged in sequence from the inside to the outside. The intelligent sensing device is evenly arranged along the axial direction of the flame retardant cable. The intelligent sensing device is provided with an induction coil and a temperature-sensitive fuse connected to the sensing chip. The sensing chip is provided with information data corresponding to the axial position of the cable. The reader outside the cable provides power to the sensing chip through electromagnetic induction, detects the signal of the induction coil, and reads the information data of the sensing chip. When the temperature at the intelligent sensing device exceeds the set temperature, the temperature-sensitive fuse is disconnected due to over-temperature, and the temperature received by the reader changes, thereby sending out an over-temperature alarm signal corresponding to the axial fuse position.

[0010] The above-mentioned RFID label pasting machine includes an annular support plate with a through hole in the middle, a feed guide wheel is provided on the support plate on the threading and discharging side away from the cable end, a guide bracket is provided on the threading and feeding side, a guide groove is provided on the guide bracket, a pasting wheel is provided at the end of the guide bracket, a hot pressing bracket is provided on the threading and discharging side close to the cable end, a hot pressing wheel is provided at the end of the hot pressing bracket, the RFID label tape enters the guide groove after passing through the guide wheel and is pulled by the pasting wheel to contact the outer surface of the second flame retardant filling layer that has been manufactured, a hot pressing wheel is provided on each side edge of the RFID label tape, the RFID label tape is tightly attached to the outer layer of the second flame retardant filling layer, and the guide wheel, pasting wheel and hot pressing wheel are evenly distributed along the axial direction of the support plate.

[0011] The outer ring of the above-mentioned pasting wheel in contact with the radio frequency tag belt is magnetic, and the hot pressing sheet is provided with a thermocouple.

[0012] The above radio frequency tag is provided with an intelligent induction device inside, and the intelligent induction device is wrapped by a strip-shaped plastic encapsulation tape, and the plastic encapsulation tape has adhesiveness under the condition of being heated.

[0013] The above constant temperature baking oven includes a box body, a through hole is provided at the top end of the box body, a wire routing groove is provided at the lower end of the through hole, rollers are evenly distributed along the wire cable traction direction in the wire routing groove, a heating device is provided at the inner top end of the through hole, moisture exhaust pipes are evenly distributed along the traction direction on both sides inside the through hole, the pipe orifices of the moisture exhaust pipes face the traction direction, an outlet humidity detector is provided above the outlet at the end of the box body, and a wire cable humidity detector is provided near the wire cable at the lower part of the outlet at the end of the box body.

[0014] The above high-temperature drying device includes an annular bracket, a power supply line is provided at the top end of the annular bracket, and thermocouples are evenly distributed in a circumferential manner inside the annular bracket.

[0015] The above glue coating device includes an annular glue coating pipe, a glue feeding pipe is provided at the top end of the annular glue coating pipe, and glue coating wheels are evenly distributed in a circumferential manner inside the annular glue coating pipe.

[0016] The set temperature at the above intelligent induction device is obtained by testing the flame-retardant cable. When the set temperature is reached at the intelligent induction device, the temperature threshold for safe operation is reached at the wire core;

[0017] The above intelligent induction device is an RFID radio frequency electronic tag, the reader is an RFID radio frequency reader, the identification code UID stored in the ID area of the RFID radio frequency electronic tag corresponds to the wire cable length code, and the set temperature limit value is stored in the user data area.

[0018] The above reader includes a reader coil, the reader coil is connected to the output end of the non-contact reading and writing chip, and the non-contact reading and writing chip is communicatively connected to the reading controller.

[0019] An integrated production device for a high-flame-retardant B-class cable with intelligent induction provided by the present invention embeds the RFID radio frequency electronic tag into the isolation layer through segmented construction of the mineral isolation layer, and ensures that the radio frequency electronic tag is evenly distributed both axially and radially and is in close contact with the mineral layer through the radio frequency tag pasting machine and the front and rear end equipment, preventing the generation of air gaps from affecting the flame-retardant effect. This device can automatically produce the intelligent induction cable in a production line manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the drawings and embodiments:

[0021] Figure 1 It is a production arrangement schematic diagram of the flame-retardant cable integrated production device of the present invention;

[0022] Figure 2 Structural schematic of the radio frequency label pasting machine of the present invention Figure 1 ;

[0023] Figure 3 Structural schematic of the radio frequency label pasting machine of the present invention Figure 2 ;

[0024] Figure 4 Working schematic of the radio frequency label pasting machine of the present invention;

[0025] Figure 5 is Figure 4 Partial enlarged schematic in

[0026] Figure 6 Structural schematic of the high-temperature drying device;

[0027] Figure 7 Structural schematic of the glue coating device;

[0028] Figure 8 Structural schematic of the constant-temperature baking oven;

[0029] Figure 9 is Figure 8 Cross-sectional view taken along A-A in

[0030] Figure 10 Layer splitting schematic of the flame-retardant cable;

[0031] Figure 11 Structural schematic of the intelligent induction device and the reader;

[0032] Figure 12 Communication schematic of the intelligent induction device and the reader.

[0033] Wherein: wire core 1, fire-resistant layer wrapping 2, first flame retardant filling layer 3, metal armor 4, second flame retardant filling layer 5, intelligent sensing device 6, sensing chip 61, induction coil 62, temperature-sensitive fuse 63, third flame retardant filling layer 7, flame retardant sheath 8, reader 9, reader coil 91, contactless read-write chip 10, reading controller 11, reader power supply 12, flame retardant cable 13, first mineral isolation layer extruder 14, high temperature drying device 15, annular bracket 151, power cord 152, thermocouple 153, glue coating device 16, annular coating Rubber hose 161, glue feeding hose 162, glue coating wheel 163, radio frequency label pasting machine 17, support plate 171, feed guide wheel 172, guide bracket 173, pasting bracket 173, guide groove 174, pasting wheel 175, hot pressing bracket 176, hot pressing wheel 177, second mineral isolation layer extruder 18, constant temperature baking oven 19, box body 191, wiring groove 192, roller 193, dehumidification pipe 194, heating device 195, outlet humidity detector 196, cable humidity detector 197, through hole 198, radio frequency label tape 20. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] like Figure 1 As shown in the figure, a high-flame-retardant B1-level cable integrated production device with intelligent sensing includes a first mineral isolation layer extruder 14, a high-temperature drying device 15, a gluing device 16, a radio frequency label pasting machine 17, a second mineral isolation layer extruder 18 and a constant temperature baking oven 19, through which a flame-retardant cable 13 sequentially passes, and the end of the flame-retardant cable 13 is towed by a traction machine.

[0036] like Figure 10 As shown in , the flame retardant cable 13 comprises a wire core 1, a fire-resistant layer wrap 2, a first flame retardant filling layer 3, a metal armor 4, a second flame retardant filling layer 5, an intelligent sensing device 6, a third flame retardant filling layer 7 and a flame retardant sheath 8 which are arranged in sequence from the inside to the outside. The intelligent sensing device 6 is evenly arranged along the axial direction of the flame retardant cable 13. The intelligent sensing device 6 is provided with an induction coil 62 and a temperature-sensitive fuse 63 connected to a sensing chip 61. The sensing chip 61 is provided with information data corresponding to the axial position of the cable. The reader 9 outside the cable provides power to the sensing chip 61 through electromagnetic induction, detects the signal of the induction coil 62, and reads the information data of the sensing chip 61. When the temperature at the intelligent sensing device 6 exceeds the set temperature, the temperature-sensitive fuse 63 is disconnected due to over-temperature, and the temperature received by the reader 9 changes, thereby sending an over-temperature alarm signal corresponding to the axial fuse position.

[0037] like Figures 2 - 5As shown in the figure, the above-mentioned RF label pasting machine 17 includes an annular support plate 171 with a through hole in the middle. On the side of the support plate 171 away from the cable end in the threading and discharging direction, there is a feeding guide wheel 172. On the side of the threading and feeding, there is a guide bracket 173. There is a guide groove 174 on the guide bracket 173. At the end of the guide bracket 173, there is a pasting wheel 175. On the side of the support plate 171 close to the cable end in the threading and discharging direction, there is a hot pressing bracket 176. At the end of the hot pressing bracket 176, there is a hot pressing wheel 177. The RF label tape 20 enters the guide groove 174 after passing through the guide wheel 172 and is pulled by the pasting wheel 175 to contact the outer surface of the already fabricated second flame-retardant filling layer 5. One hot pressing wheel 177 is provided on each of the two side edges of the RF label tape 20. The RF label tape 20 presses the RF label tape 20 tightly against the outer layer of the second flame-retardant filling layer 5. The guide wheel 172, the pasting wheel 175, and the hot pressing wheel 177 are evenly distributed along the axial direction of the support plate 171.

[0038] The outer ring of the above-mentioned pasting wheel 175 in contact with the RF label tape 20 is magnetic, and a thermocouple is provided on the hot pressing piece.

[0039] An intelligent induction device 6 is provided inside the above-mentioned RF label tape 20. The intelligent induction device 6 is wrapped with a strip-shaped plastic encapsulation tape, and the plastic encapsulation tape has adhesiveness when heated.

[0040] After the armored construction, the flame-retardant cable 13 has a metal armor 4. The cable first passes through the first mineral insulation layer extruder 14. The first mineral insulation layer extruder 14 extrudes the mineral insulation layer in a solid-liquid mixed state after mixing materials through a double screw, including on the outer side of the metal armor 4. Then, it is preliminarily cured and heated through the heating device at the end of the first mineral insulation layer extruder 14 to form the second flame-retardant filling layer 5. After that, the cable passes through the high-temperature drying device 15 to perform high-temperature drying and curing on the second flame-retardant filling layer 5. Then, the cable passes through the gluing device 16 to apply glue to the place on the outer surface of the second flame-retardant filling layer 5 where the RF label tape 20 needs to be pasted. After that, the cable passes through the support plate 171. The RF label tape 20 contacts the outer side of the second flame-retardant filling layer 5 under the suction and guidance of the magnetic force of the pasting wheel 175 and leaves the pasting wheel 175 under the action of the applied glue adhesion. When the RF label tape 20 passes through the hot pressing wheel 177 under the traction of the cable, the plastic encapsulation tape at the edge of the RF label tape 20 is heated, so that both sides of the RF label tape 20 are tightly attached to the second flame-retardant filling layer 5, preventing detachment during the construction of the third flame-retardant filling layer 7. After that, the cable enters the second mineral insulation layer extruder 18. The second mineral insulation layer extruder 18 extrudes the mineral insulation layer in a solid-liquid mixed state through a double screw, including on the outer side of the second flame-retardant filling layer 5. Then, it is preliminarily cured and heated through the low-temperature heating device at the end of the second mineral insulation layer extruder 18 to form the third flame-retardant filling layer 7. Then, the cable enters the constant-temperature baking oven 19 for constant-temperature curing.

[0041] AsFigure 8 and 9 As shown in 9 , the above-mentioned constant-temperature baking oven 19 includes a box body 191. A through hole 198 is provided at the top of the box body 191. A wire routing groove 192 is provided at the lower end of the through hole 198. Rollers 193 are evenly distributed along the wire cable traction direction in the wire routing groove 192. A heating device 195 is provided at the inner top end of the through hole 198. Moisture exhaust pipes 194 are evenly distributed along the traction direction on both sides inside the through hole 198. The pipe orifices of the moisture exhaust pipes 194 face the traction direction. An outlet humidity detector 196 is provided above the outlet at the end of the box body 191. A wire cable humidity detector 197 is provided near the wire cable at the lower part of the outlet at the end of the box body 191.

[0042] The third flame-retardant filling layer 7 on the outer layer of the wire cable is heated and cured by the heating device 195. The applied colloid solidifies or vaporizes after heating. At this time, the curing temperature should not be too high to avoid damaging the inner intelligent induction device 6. Therefore, the heating temperature is controlled by the heating device 195. During the heating process, the moisture exhaust pipes 194 conduct air flow guidance to discharge the moisture generated during heating towards the tail. The discharged humidity is detected by the outlet humidity detector 196 to judge the curing process state of the third flame-retardant filling layer 7. The surface humidity of the wire cable is detected by the wire cable humidity detector 197 near the bottom of the wire cable to judge whether the curing is complete. After the wire cable is cured, it has the third flame-retardant filling layer 7, and then the construction of the flame-retardant sheath 8 is carried out.

[0043] As Figure 6 As shown in Figure 6 , the above-mentioned high-temperature drying device 15 includes an annular bracket 151. A power cord 152 is provided at the top of the annular bracket 151. Thermocouples 153 are evenly distributed in a circle inside the annular bracket 151.

[0044] As Figure 7 As shown in Figure 7 , the above-mentioned glue coating device 16 includes an annular glue coating pipe 161. A glue feeding pipe 162 is provided at the top of the annular glue coating pipe 161. Glue coating wheels 163 are evenly distributed in a circle inside the annular glue coating pipe 161.

[0045] The set temperature at the above-mentioned intelligent induction device 6 is obtained through tests on the flame-retardant wire cable 13. When the set temperature is reached at the intelligent induction device 6, the temperature threshold for safe operation is reached at the wire core 1;

[0046] The above-mentioned intelligent induction device 6 is an RFID radio frequency electronic tag, and the reader 9 is an RFID radio frequency reader. The identification code UID stored in the ID area of the RFID radio frequency electronic tag corresponds to the wire cable length code, and the set temperature limit value is stored in the user data area.

[0047] As Figure 11 and 12As shown in the figure, the above-mentioned reader 9 includes a reader coil 91. The reader coil 91 is connected to the output end of the non-contact read-write chip 10, and the non-contact read-write chip 10 is communicatively connected to the reading controller 11.

Claims

1. High-flame-retardant B1-level cable integrated production device with intelligent induction, characterized in that, It includes a first mineral isolation layer extruder (14), a high-temperature drying device (15), a glue coating device (16), a radio frequency label pasting machine (17), a second mineral isolation layer extruder (18) and a constant-temperature baking oven (19). The end of the flame-retardant cable (13) is pulled by a tractor; The flame-retardant cable (13) includes a wire core (1), a refractory layer wrapping (2), a first flame-retardant filling layer (3), a metal armor (4), a second flame-retardant filling layer (5), an intelligent sensing device (6), a third flame-retardant filling layer (7) and a flame-retardant sheath (8) arranged in sequence from inside to outside. The intelligent sensing devices (6) are uniformly arranged along the axial direction of the flame-retardant cable (13). An induction coil (62) and a temperature-sensitive fuse (63) connected to an induction chip (61) are provided inside the intelligent sensing device (6). Information data corresponding to the axial position of the cable is provided inside the induction chip (61). A reader (9) outside the cable supplies power to the induction chip (61) through electromagnetic induction, detects the signal of the induction coil (62), and reads the information data of the induction chip (61). When the temperature at the intelligent sensing device (6) exceeds the set temperature, the temperature-sensitive fuse (63) disconnects due to overheating, and the temperature received by the reader (9) changes, thereby sending an over-temperature alarm signal corresponding to the position of the axial fuse; The radio frequency label pasting machine (17) includes an annular support plate (171) with a through hole in the middle. On the side away from the cable end on the wire-passing and discharging side of the support plate (171), there is a feeding guide wheel (172). On the wire-passing and feeding side, there is a guiding bracket (173). A guiding groove (174) is provided on the guiding bracket (173). A pasting wheel (175) is provided at the end of the guiding bracket (173). On the side close to the cable end on the wire-passing and discharging side of the support plate (171), there is a hot pressing bracket (176). A hot pressing wheel (177) is provided at the end of the hot pressing bracket (176). The radio frequency label tape (20) enters the guiding groove (174) after passing through the guiding wheel (172) and is pulled by the pasting wheel (175) to contact the outer surface of the already made second flame-retardant filling layer (5). One hot pressing wheel (177) is provided on each of the two side edges of the radio frequency label tape (20). The radio frequency label tape (20) presses the radio frequency label tape (20) tightly against the outer layer of the second flame-retardant filling layer (5). The guiding wheel (172), the pasting wheel (175) and the hot pressing wheel (177) are uniformly distributed along the axial direction of the support plate (171); The radio frequency label tape (20) is provided with an intelligent sensing device (6) inside. The intelligent sensing device (6) is wrapped with a strip-shaped plastic encapsulation tape, and the plastic encapsulation tape has adhesiveness when heated.

2. The high-flame-retardant B1-level cable integrated production device with intelligent induction according to claim 1, characterized in that, The outer ring of the pasting wheel (175) in contact with the radio frequency label tape (20) is magnetic, and a thermocouple is provided on the hot pressing piece.

3. The high-flame-retardant B1-level cable integrated production device with intelligent induction according to claim 2, characterized in that, The described constant-temperature drying oven (19) includes a box body (191). A through hole (198) is provided at the top of the box body (191). A wire routing groove (192) is provided at the lower end of the through hole (198). Rollers (193) are evenly distributed along the wire cable traction direction in the wire routing groove (192). A heating device (195) is provided at the inner top end of the through hole (198). Moisture exhaust pipes (194) evenly distributed along the traction direction are provided on both sides inside the through hole (198). The pipe orifices of the moisture exhaust pipes (194) face the traction direction. An outlet humidity detector (196) is provided above the outlet at the end of the box body (191). A wire cable humidity detector (197) is provided near the wire cable at the lower part of the outlet at the end of the box body (191).

4. The high-flame-retardant B1-level cable integrated production device with intelligent induction according to claim 3, characterized in that, The described high-temperature drying device (15) includes an annular bracket (151). A power cord (152) is provided at the top of the annular bracket (151). Thermocouples (153) evenly distributed in a circle are provided inside the annular bracket (151).

5. The high-flame-retardant B1-level cable integrated production device with intelligent induction according to claim 4, characterized in that, The described glue coating device (16) includes an annular glue coating pipe (161). A glue feeding pipe (162) is provided at the top of the annular glue coating pipe (161). Glue coating wheels (163) evenly distributed in a circle are provided inside the annular glue coating pipe (161).

6. The high-flame-retardant B1-level cable integrated production device with intelligent induction according to claim 5, characterized in that, The set temperature at the described intelligent induction device (6) is obtained through testing the flame-retardant wire cable (13). When the set temperature is reached at the intelligent induction device (6), the temperature threshold for safe operation is reached at the wire core (1). The described intelligent induction device (6) is an RFID radio frequency electronic tag, and the reader (9) is an RFID radio frequency reader. The identification code UID stored in the ID area of the RFID radio frequency electronic tag corresponds to the wire cable length code, and the set temperature limit value is stored in the user data area.

7. The high-flame-retardant B1-level cable integrated production device with intelligent induction according to claim 1, characterized in that, The described reader (9) includes a reader coil (91). The reader coil (91) is connected to the output end of a non-contact reading and writing chip (10). The non-contact reading and writing chip (10) is communicatively connected to a reading controller (11).

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