CN117410043A - Asphalt coating device for high-voltage cable and coating method thereof - Google Patents
Asphalt coating device for high-voltage cable and coating method thereof Download PDFInfo
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- CN117410043A CN117410043A CN202311326382.2A CN202311326382A CN117410043A CN 117410043 A CN117410043 A CN 117410043A CN 202311326382 A CN202311326382 A CN 202311326382A CN 117410043 A CN117410043 A CN 117410043A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 215
- 238000000576 coating method Methods 0.000 title claims abstract description 137
- 239000011248 coating agent Substances 0.000 title claims abstract description 126
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000002844 melting Methods 0.000 claims abstract description 41
- 230000008018 melting Effects 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000005507 spraying Methods 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 16
- 238000005070 sampling Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000009829 pitch coating Methods 0.000 claims description 3
- 230000006872 improvement Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 229910052802 copper Inorganic materials 0.000 description 11
- 239000010949 copper Substances 0.000 description 11
- 238000001816 cooling Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 239000008213 purified water Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0036—Details
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Road Paving Machines (AREA)
Abstract
The invention relates to the field of high-voltage cable production, in particular to an asphalt coating device for a high-voltage cable and a coating method thereof, wherein the device comprises the following components: a melting module connected with the box body and used for heating and melting the solid asphalt material to output the asphalt material in a molten state; the asphalt conveying module is partially arranged above the melting module and is used for conveying the asphalt in the molten state to the position corresponding to the position to be poured; the pouring module is arranged at the output end of the asphalt conveying module and used for pouring the asphalt material in the molten state onto the surface of the high-voltage cable; the control module is respectively connected with the melting module, the asphalt conveying module and the material spraying module and is used for carrying out primary adjustment on the rotating speed of the power motor when the uniformity of asphalt coating of the high-voltage cable is judged to be lower than an allowable range according to the variance of the asphalt coating thickness of the high-voltage cable; the invention realizes the improvement of the asphalt coating precision and stability of the high-voltage cable.
Description
Technical Field
The invention relates to the technical field of asphalt coating, in particular to an asphalt coating device for a high-voltage cable and a coating method thereof.
Background
In the process of the outer sheath of the high-voltage cable, an important process is carried out before the high-voltage cable enters the outer sheath extruder, namely asphalt is coated, and asphalt is filled between the metal aluminum sheath and the outer sheath in the high-voltage cable structure, so that the metal aluminum sheath and the outer sheath cannot slide relatively, and the waterproofness and the corrosion resistance of the high-voltage cable are further improved. The asphalt is heated and melted by adopting electric heating and heating oil modes in high-voltage cable manufacturers, and some asphalt is even heated and melted by using open fire, so that the safety, energy consumption, efficiency, quality and utilization rate of the asphalt coating are very headache for the high-voltage cable manufacturers.
Chinese patent publication No.: CN101728033B discloses a high-voltage cable asphalt coating machine, including box, support frame, roller, all be equipped with the circular opening that supplies the cable to penetrate on the both ends lateral wall of box, be equipped with on the support frame of cable entry side and connect the charging tray to and drive arrangement, its characterized in that: the asphalt paint coating machine comprises a box body, wherein a container for containing asphalt paint is arranged at the upper end part of the box body, a liquid outlet pipe is connected to the lower part of the container, a liquid outlet of the liquid outlet pipe is arranged above a cable inlet side charging tray, the asphalt paint coating machine further comprises a roller device and a coating device, the coating device is arranged at the inlet side of the cable, a material receiving bin is arranged below the coating device, and the roller device is connected with a driving device through a transmission component. Compared with the existing coating machine, the invention omits a melting device and a tail gas treatment device by adopting asphalt paint with the same performance as the massive asphalt as the raw material of the coating, reduces the volume of the coating machine and improves the working environment; the turntable moves circularly in the coating process, so that the asphalt paint sprayed on the outer surface of the aluminum pipe is uniformly coated on the outer surface of the aluminum pipe by the coating belt. It can be seen that the high voltage cable asphalt coating machine has problems that the asphalt is transported at too high a rate and the heating mode has an influence on the stability of the asphalt coating process.
Disclosure of Invention
Therefore, the invention provides an asphalt coating device for a high-voltage cable and a coating method thereof, which are used for solving the problems that the conveying speed of asphalt is too high and the heating mode has an influence on the stability of an asphalt coating process in the prior art.
To achieve the above object, the present invention provides an asphalt coating apparatus for a high voltage cable, comprising a case, further comprising: a melting module connected with the box body and used for heating and melting the solid asphalt material to output the asphalt material in a molten state; the asphalt conveying module is partially arranged above the melting module and used for conveying the asphalt in the molten state to the position corresponding to the position to be poured, and comprises a power motor arranged below the melting module and used for providing asphalt conveying power; the pouring module is arranged at the output end of the asphalt conveying module and used for pouring the asphalt in the molten state onto the surface of the high-voltage cable, and comprises a pouring groove connected with the inner wall of the box body and used for pouring the asphalt in the molten state to a position to be coated, a vertical telescopic component connected with the pouring groove and used for adjusting the vertical height of the pouring groove, and a visual detector arranged below the pouring groove and used for detecting the horizontal inclination angle of the high-voltage cable; the control module is respectively connected with the melting module, the asphalt conveying module and the material spraying module, and is used for carrying out primary adjustment on the rotating speed of the power motor when the uniformity of asphalt coating of the high-voltage cable is judged to be lower than an allowable range according to the variance of the asphalt coating thickness of the high-voltage cable, or carrying out primary adjustment on the vertical height of the material spraying groove according to the horizontal inclination angle of the high-voltage cable arranged in the bottom covering tray below the material spraying groove, carrying out secondary adjustment on the rotating speed of the power motor according to the weight increasing speed of the high-voltage cable detected and calculated by the weight sensor connected with the bottom covering tray, and carrying out secondary adjustment on the vertical height of the material spraying groove according to the vibration intensity of the box body detected by the vibration sensor connected with the box body.
Further, the control module calculates the variance of the asphalt coating thickness according to the asphalt coating thickness of the high-voltage cable at a plurality of sampling points detected by the visual detector,
if the variance of the asphalt coating thickness triggers a preset first variance condition or triggers a preset second variance condition, the control module determines that the uniformity of asphalt coating of the high-voltage cable is lower than the allowable range, wherein,
the control module preliminarily judges that the roughness of the bottom-covered tray exceeds an allowable range when the variance of the asphalt coating thickness triggers a preset first variance condition independently, and secondarily judges the roughness of the bottom-covered tray according to the horizontal inclination angle of the high-voltage cable;
the control module judges that the rotating speed of the power motor is regulated when the variance of the asphalt coating thickness triggers a preset second variance condition independently;
the preset first variance condition is that the variance of the asphalt coating thickness is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance is that the variance of the asphalt coating thickness is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
Further, the control module is provided with a plurality of adjustment modes for increasing the rotating speed of the power motor according to the difference value between the variance of the asphalt coating thickness and the preset second variance when the variance of the asphalt coating thickness triggers the preset second variance condition independently, wherein the adjustment amplitude of each rotating speed adjustment mode for increasing the rotating speed of the power motor is different.
Further, the control module performs secondary judgment on the roughness of the covered tray according to the horizontal inclination angle of the high-voltage cable when the variance of the asphalt coating thickness triggers a preset first variance condition independently,
if the horizontal inclination angle of the high-voltage cable triggers a preset inclination angle condition, the control module secondarily judges that the roughness of the bottom covering tray exceeds an allowable range, and adjusts the vertical height of the material spraying groove;
the preset inclination angle condition is that the horizontal inclination angle of the high-voltage cable is larger than the preset inclination angle.
Further, the control module is provided with a plurality of adjusting modes for increasing the vertical height of the shower groove according to the difference value between the horizontal inclination angle of the high-voltage cable and the preset inclination angle under the condition of the preset inclination angle, wherein the adjusting amplitude of each height adjusting mode for increasing the vertical height of the shower groove is different.
Further, the control module determines the effectiveness of asphalt delivery according to the rate of weight increase of the covered pallet in the first operational state,
if the weight increasing speed of the bottom-covered tray triggers a preset increasing speed condition, the control module judges that the effectiveness of asphalt conveying is lower than an allowable range, and secondarily adjusts the rotating speed of the power motor;
the preset increasing speed condition is that the weight increasing speed of the bottom covering tray is smaller than the preset increasing speed; the first running state is that the control module completes primary adjustment of the rotating speed of the power motor.
Further, the control module is provided with a plurality of secondary adjustment modes for reducing the rotating speed of the power motor according to the difference value between the preset increasing speed and the weight increasing speed of the cover tray when the first running state is met and the weight increasing speed of the cover tray triggers the preset increasing speed condition, wherein the adjustment range for reducing the rotating speed of the power motor by each secondary adjustment mode of the rotating speed is different.
Further, the control module determines whether the stability of the overall structure is within an allowable range according to the vibration intensity of the tank body in the second operation state,
if the vibration intensity of the box body triggers a preset vibration intensity condition, the control module judges that the stability of the whole structure is lower than an allowable range, and the vertical height of the shower groove is secondarily adjusted;
the preset vibration intensity condition is that the vibration intensity of the box body is larger than the preset vibration intensity; and the second running state is that the control module completes the primary adjustment of the shower groove.
Further, the control module is provided with a plurality of secondary adjustment modes for reducing the vertical height of the shower tank according to the difference value between the vibration intensity of the box and the preset vibration intensity when the vibration intensity of the box triggers the preset vibration intensity condition, wherein the adjustment amplitude of each secondary adjustment mode for reducing the vertical height of the shower tank is different.
The invention also provides an asphalt coating method for the high-voltage cable, which comprises the following steps:
step S1, conveying solid asphalt into a melting module, and heating and melting the solid asphalt by a heating assembly arranged in the melting module to output asphalt in a molten state;
s2, conveying the asphalt material in the molten state to a position to be poured through an asphalt conveying module, and controlling the pouring module to perform pouring coating on the high-voltage cable;
step S3, the control module judges the uniformity of asphalt coating of the high-voltage cable according to the variance of the coating thickness of the high-voltage cable at a plurality of sampling points after pouring coating, and carries out primary adjustment on the rotating speed of the power motor when judging that the uniformity of asphalt coating of the high-voltage cable is lower than an allowable range, or carries out primary adjustment on the vertical height of the pouring chute according to the horizontal inclination angle of the high-voltage cable;
step S4, the control module controls a weight sensor to detect the weight of the high-voltage cable and secondarily adjusts the power motor according to the weight increasing speed of the high-voltage cable when the primary adjustment of the power motor is completed;
and S5, controlling the vibration sensor to detect the vibration intensity of the box body when the control module completes the adjustment of the vertical height of the shower groove, and secondarily adjusting the vertical height of the shower groove according to the vibration intensity of the box body.
Compared with the prior art, the system has the beneficial effects that through the arranged melting module, the asphalt conveying module, the pouring module and the control module, the system can judge that the uniformity of asphalt coating of the high-voltage cable is lower than an allowable range according to the variance of the asphalt coating thickness of the high-voltage cable, and then perform primary adjustment on the rotating speed of the power motor, or perform primary adjustment on the vertical height of the pouring chute according to the horizontal inclination angle of the high-voltage cable in the bottom tray arranged below the pouring chute, so that the influence on the asphalt coating accuracy caused by poor judgment on the asphalt coating uniformity and poor flow property of asphalt in a molten state due to the excessively low height of the pouring chute is reduced; the rotating speed of the power motor is secondarily adjusted according to the weight increasing speed of the high-voltage cable detected and calculated by the weight sensor connected with the bottom covering tray, so that the influence of asphalt conveying effectiveness reduction caused by overhigh adjustment of the power motor is reduced, and the influence of inaccuracy in secondary adjustment of the pouring chute on the structural stability of the whole coating device is reduced by secondarily adjusting the vertical height of the pouring chute according to the vibration intensity of the box body detected by the vibration sensor connected with the box body; an improvement in the accuracy and stability of asphalt coating for high voltage cables is achieved.
Further, the device provided by the invention has the advantages that the preset first variance and the preset second variance are set, the variance of the asphalt coating thickness is calculated according to the asphalt coating thickness of the high-voltage cable at a plurality of sampling points detected by the visual detector, the uniformity of the asphalt coating is judged, the roughness of the bottom-covered tray is primarily judged to exceed the allowable range or the power rotating speed is regulated, the influence on the asphalt coating accuracy caused by inaccurate judgment on the generation reason of the uniformity of the asphalt coating is reduced, and the improvement on the accuracy and the stability of the asphalt coating of the high-voltage cable is further realized.
Further, according to the device, through the preset increasing speed, the effectiveness of asphalt conveying is judged according to the increasing speed of the weight of the covered tray in the first running state, and the rotating speed of the power motor is secondarily regulated, so that the influence of the rotating speed of the power motor on the effect of centrifugal throwing of asphalt is reduced, and the improvement of the accuracy and stability of asphalt coating of a high-voltage cable is further realized.
Further, by setting the preset vibration intensity, the device provided by the invention judges whether the stability of the overall structure is within the allowable range according to the vibration intensity of the box body in the second running state, and secondarily adjusts the vertical height of the material spraying groove, so that the influence of the gravity center on the stability of the overall structure caused by the overhigh height of the material spraying groove is reduced, and the improvement of the accuracy and the stability of asphalt coating of a high-voltage cable is further realized.
Drawings
FIG. 1 is a view showing the construction of the inside of a case of an asphalt coating apparatus for a high voltage cable according to an embodiment of the present invention;
FIG. 2 is a control panel diagram of an asphalt coating apparatus for a high voltage cable according to an embodiment of the present invention;
FIG. 3 is a diagram of a coil of hot plate copper only for an asphalt coating apparatus for high voltage cables according to an embodiment of the present invention;
FIG. 4 is a cooling flow chart of a cooling module of an asphalt coating apparatus for a high voltage cable according to an embodiment of the present invention;
fig. 5 is an overall flow chart of a pitch coating method for a high voltage cable according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, which are respectively an internal structure diagram of a box body of an asphalt coating apparatus for a high voltage cable, a control panel diagram, a heating plate pure copper pipe coil diagram, a cooling flow diagram of a cooling module, and an overall flow diagram of an asphalt coating method for a high voltage cable according to an embodiment of the present invention; the invention relates to an asphalt coating device for a high-voltage cable, which comprises a box body 1 and further comprises:
a melting module connected to the tank 1 for melting the solid asphalt by heating to output asphalt in a molten state;
the asphalt conveying module is partially arranged above the melting module and is used for conveying the asphalt in the molten state to a position corresponding to the position to be poured, and comprises a power motor 6 arranged below the melting module and used for providing asphalt conveying power;
the pouring module is arranged at the output end of the asphalt conveying module and used for pouring the asphalt in the molten state onto the surface of the high-voltage cable, and comprises a pouring groove 12 connected with the inner wall of the box body 1 and used for pouring the asphalt in the molten state to a position to be coated, a vertical telescopic component 25 connected with the pouring groove 12 and used for adjusting the vertical height of the pouring groove 12, and a visual detector (not shown in the figure) arranged below the pouring groove 12 and used for detecting the horizontal inclination angle of the high-voltage cable;
the control module is respectively connected with the melting module, the asphalt conveying module and the material spraying module, and is used for carrying out primary adjustment on the rotating speed of the power motor when the uniformity of asphalt coating of the high-voltage cable is judged to be lower than an allowable range according to the variance of the asphalt coating thickness of the high-voltage cable, or carrying out primary adjustment on the vertical height of the material spraying groove 12 according to the horizontal inclination angle of the high-voltage cable in the covered bottom tray 10 arranged below the material spraying groove 12, carrying out secondary adjustment on the rotating speed of the power motor according to the weight increasing speed of the high-voltage cable obtained by detection and calculation of a weight sensor (not shown in the figure) connected with the covered bottom tray 10, and carrying out secondary adjustment on the vertical height of the material spraying groove 12 according to the vibration intensity of the box body 1 detected by the vibration sensor 29 connected with the box body 1.
Specifically, the melting module includes:
the heating component is arranged at the bottom of the box body 1 and is used for heating the solid asphalt material;
and the exhaust emission treatment component is arranged above the box body 1 and is used for discharging exhaust generated in the heating process.
Specifically, the heating mode of the heating component is frequency heating.
Specifically, the heating assembly comprises a heating plate 4 for transferring heat and a copper tube coil arranged below the heating plate 4 for heating the heating plate 4.
Specifically, the asphalt delivery module further comprises:
a belt driving wheel 15 connected with the belt 7 for driving the belt 7 to run;
a driven pulley 9 connected to the belt 7 for transmitting a rotation moment of the belt 7;
an asphalt wheel 8 connected to the driven wheel 9 for pouring asphalt in a molten state onto a shower tank 12.
Specifically, the bottom covering tray 10 receives asphalt overflowed from the shower tank 12 to perform secondary asphalt shower on the high-voltage cable.
Specifically, the melting module includes:
the heating component is arranged at the bottom of the box body 1 and is used for heating the solid asphalt material;
and the exhaust emission treatment component is arranged above the box body 1 and is used for discharging exhaust generated in the heating process.
Specifically, the heating mode of the heating component is frequency heating.
Specifically, the heating assembly comprises a heating plate 4 for transferring heat and a copper tube coil arranged below the heating plate 4 for heating the heating plate 4.
Preferably, the number of the asphalt wheels 8 is two.
Preferably, the inclination angle of the bottom covering tray 10 is 15 degrees, and the outlet is the melting tank 5.
Preferably, the number of grooves of the shower groove 12 is five.
Preferably, the smoke port 2 is communicated with a special gas device, namely a gas extracting pipe and a gas extracting pump, and gas generated by asphalt melting is collected and treated by the gas extracting pump and the pipe, so that the environment-friendly requirement is met, and the environment pollution is reduced.
Preferably, the invention provides a novel heating and melting asphalt coating integrated device, which also comprises a cooling module, wherein the cooling module comprises a water storage tank, a tap water inlet pipeline, a tap water outlet pipeline and a radiator.
Preferably, the purified water is stored in the water storage tank, and the purified water flows in a sealing way in the copper pipe coil, the radiator and the water storage tank, so that the production of scale is reduced, and the problem of maintaining high temperature of the copper pipe coil and reducing the service life of the device is avoided.
According to the system, through the arranged melting module, the asphalt conveying module, the pouring module and the control module, the power motor rotation speed is primarily adjusted when the asphalt coating uniformity of the high-voltage cable is judged to be lower than an allowable range according to the variance of the asphalt coating thickness of the high-voltage cable, or the vertical height of the pouring tank 12 is primarily adjusted according to the horizontal inclination angle of the high-voltage cable in the bottom covering tray 10 arranged below the pouring tank 12, so that the influence on the asphalt coating accuracy caused by the fact that the asphalt coating uniformity is not accurately judged and the flow property of asphalt in a molten state is deteriorated due to the fact that the height of the pouring tank 12 is too low is reduced; the influence of the reduction of the asphalt conveying effectiveness caused by the overhigh adjustment of the power motor 6 is reduced by secondarily adjusting the rotating speed of the power motor according to the weight increasing speed of the high-voltage cable detected and calculated by the weight sensor connected with the cover tray 10, and the influence of the inaccuracy of the secondary adjustment of the shower 12 on the structural stability of the whole coating device is reduced by secondarily adjusting the vertical height of the shower 12 according to the vibration intensity of the box 1 detected by the vibration sensor 29 connected with the box 1; an improvement in the accuracy and stability of asphalt coating for high voltage cables is achieved.
With continued reference to fig. 1, the control module calculates a variance of the asphalt coating thickness from the high voltage cable asphalt coating thickness at the plurality of sampling points detected by the vision detector,
if the variance of the asphalt coating thickness triggers a preset first variance condition or triggers a preset second variance condition, the control module determines that the uniformity of asphalt coating of the high-voltage cable is lower than the allowable range, wherein,
the control module preliminarily judges that the roughness of the bottom covering tray 10 exceeds an allowable range when the variance of the asphalt coating thickness triggers a preset first variance condition independently, and secondarily judges the roughness of the bottom covering tray 10 according to the horizontal inclination angle of the high-voltage cable;
the control module judges that the rotating speed of the power motor is regulated when the variance of the asphalt coating thickness triggers a preset second variance condition independently;
the preset first variance condition is that the variance of the asphalt coating thickness is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance is that the variance of the asphalt coating thickness is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
Specifically, the variance of the asphalt coating thickness is denoted as Q, the preset first variance is denoted as Q1, and the preset second variance is denoted as Q2, where Q1 < Q2.
According to the device, the preset first variance and the preset second variance are set, the variance of the asphalt coating thickness is calculated according to the asphalt coating thickness of the high-voltage cable at a plurality of sampling points detected by the visual detector, the uniformity of the asphalt coating is judged, the roughness of the bottom-coated tray 10 is primarily judged to be beyond the allowable range or the power rotating speed is regulated, the influence on the asphalt coating accuracy caused by inaccurate judgment on the generation reason of the uniformity of the asphalt coating is reduced, and the improvement on the accuracy and the stability of the asphalt coating of the high-voltage cable is further realized.
With continued reference to fig. 1, the control module is provided with a plurality of adjustment modes for increasing the rotation speed of the power motor according to a difference Δq between the variance of the asphalt coating thickness and the preset second variance when the variance of the asphalt coating thickness triggers the preset second variance condition, where each rotation speed adjustment mode has different adjustment ranges for increasing the rotation speed of the power motor.
Specifically, in the first rotation speed adjusting mode, when Δq is less than or equal to Δq0, the control module adjusts the rotation speed of the power motor to a first rotation speed by using a preset first rotation speed adjusting coefficient alpha 1;
the second adjusting mode is that the control module adjusts the rotating speed of the power motor to a second rotating speed by using a preset second rotating speed adjusting coefficient alpha 2 when delta Q > -delta Q0;
wherein Δq0 is a preset variance difference, Δq=q-Q2, the motor rotational speed is denoted as V,1 < α1 < α2, the adjusted motor rotational speed is denoted as V ', V' =v×αi is set, where αi is a preset ith rotational speed adjustment coefficient, and i=1, 2 is set.
With continued reference to fig. 1, the control module performs a secondary determination of the roughness of the bottom-coated tray 10 according to the horizontal inclination angle of the high voltage cable when the variance of the asphalt coating thickness separately triggers a preset first variance condition,
if the horizontal inclination angle of the high-voltage cable triggers a preset inclination angle condition, the control module secondarily judges that the roughness of the bottom covering tray 10 exceeds the allowable range, and adjusts the vertical height of the shower groove 12;
the preset inclination angle condition is that the horizontal inclination angle of the high-voltage cable is larger than the preset inclination angle.
Specifically, the horizontal inclination angle of the high-voltage cable is denoted as W, and the preset inclination angle is denoted as W0.
With continued reference to fig. 1, the control module is provided with a plurality of adjustment modes for increasing the vertical height of the shower tank 12 according to the difference Δw between the horizontal inclination angle and the preset inclination angle of the high-voltage cable under the preset inclination angle condition, where each of the adjustment modes has a different adjustment range for increasing the vertical height of the shower tank 12.
Specifically, in the first height adjustment mode, when Δw is less than or equal to Δw0, the control module adjusts the vertical height of the shower tank 12 to a first height by using a preset first height adjustment coefficient β1;
the second height adjustment mode is that the control module adjusts the vertical height of the shower tank 12 to a second height by using a preset second height adjustment coefficient β2 when Δw > - Δw0;
wherein Δw0 is a preset inclination angle difference, Δw=w-W0, the vertical height of the shower tank 12 is denoted as H,1 < β1 < β2, the adjusted vertical height of the shower tank 12 is denoted as H ', H' =h× (1+βj)/2 is set, where βj is a preset j-th height adjustment coefficient, and i=1, 2 is set.
With continued reference to fig. 1, the control module determines the effectiveness of asphalt delivery based on the rate of weight increase of the underwire pallet 10 in the first operating condition,
if the weight increasing speed of the bottom covering tray 10 triggers a preset increasing speed condition, the control module judges that the effectiveness of asphalt conveying is lower than an allowable range, and secondarily adjusts the rotating speed of the power motor;
wherein the preset growth rate condition is that the weight growth rate of the cover bottom tray 10 is smaller than the preset growth rate; the first running state is that the control module completes primary adjustment of the rotating speed of the power motor.
Specifically, the weight increase rate of the cover pallet 10 is denoted as S, and the preset increase rate is denoted as S0.
With continued reference to fig. 1, the control module is provided with a plurality of secondary adjustment modes for reducing the rotation speed of the power motor according to the difference Δs between the preset growth speed and the weight growth speed of the cover tray 10 when the first running state is satisfied and the weight growth speed of the cover tray 10 triggers the preset growth speed condition, where each of the secondary adjustment modes for reducing the rotation speed of the power motor has different adjustment ranges.
Specifically, the first rotational speed secondary regulation mode is that the control module regulates the rotational speed of the power motor to a first rotational speed by using a preset fourth rotational speed regulation coefficient alpha 4 when delta S is less than or equal to delta S0;
the second rotation speed secondary regulation mode is that the control module regulates the rotation speed of the power motor to a second rotation speed by using a preset third rotation speed regulation coefficient alpha 3 when delta S > -delta S0;
wherein Δs0 is a preset growth speed, Δs=s-S0, 0 < α3 < α4 < 1, the power motor rotation speed after secondary adjustment is denoted by V ", V" =v' ×αg is set, where αg is a preset g-th rotation speed adjustment coefficient, and i=3, 4 is set.
According to the device, through the preset increasing speed, the effectiveness of asphalt conveying is judged according to the increasing speed of the weight of the covered tray 10 and the rotating speed of the power motor is secondarily regulated in the first running state, so that the influence of the rotating speed of the power motor on the effect of centrifugal throwing of asphalt is reduced, and the improvement of the accuracy and stability of asphalt coating of a high-voltage cable is further realized.
With continued reference to fig. 1, in the second operating state, the control module determines whether the stability of the overall structure is within an allowable range according to the vibration intensity of the case 1,
if the vibration intensity of the box body 1 triggers a preset vibration intensity condition, the control module judges that the stability of the whole structure is lower than an allowable range, and the vertical height of the shower groove 12 is secondarily adjusted;
the preset vibration intensity condition is that the vibration intensity of the box body 1 is larger than the preset vibration intensity; the second operating state is where the control module completes the initial adjustment of the shower recess 12.
Specifically, the vibration intensity of the case 1 is denoted as T, and the preset vibration intensity is denoted as T0.
With continued reference to fig. 1, the control module is provided with a plurality of secondary adjustment modes for reducing the vertical height of the shower tank 12 according to a difference Δt between the vibration intensity of the tank 1 and the preset vibration intensity when the vibration intensity of the tank 1 triggers the preset vibration intensity condition, wherein each secondary adjustment mode has different adjustment amplitudes for reducing the vertical height of the shower tank 12.
Specifically, the first secondary height adjustment mode is that the control module adjusts the vertical height of the shower tank 12 to a third height by using a preset fourth height adjustment coefficient beta 4 when DeltaT is less than or equal to DeltaT 0;
the second secondary height adjustment mode is that the control module adjusts the vertical height of the shower tank 12 to a fourth height by using a preset third height adjustment coefficient beta 3 when DeltaT > DeltaT0;
wherein Δt0 is a preset vibration intensity difference, Δt=t-T0, 0 < β3 < β4 < 1, the vertical height of the secondarily adjusted shower tank 12 is noted as H ", H" =h' × (1+βk)/2 is set, where βk is a preset kth height adjustment coefficient, and i=3, 4 is set.
According to the device, by setting the preset vibration intensity, in the second running state, whether the stability of the overall structure is within the allowable range or not is judged according to the vibration intensity of the box body 1, and the vertical height of the shower groove 12 is secondarily adjusted, so that the influence on the stability of the overall structure caused by the fact that the gravity center is over high due to the fact that the height of the shower groove 12 is over high is reduced, and the improvement of the accuracy and the stability of asphalt coating of a high-voltage cable is further realized.
The invention relates to an asphalt coating method of an asphalt coating device for a high-voltage cable, which comprises the following steps:
step S1, conveying solid asphalt into a melting module, and heating and melting the solid asphalt by a heating assembly arranged in the melting module to output asphalt in a molten state;
s2, conveying the asphalt material in the molten state to a position to be poured through an asphalt conveying module, and controlling the pouring module to perform pouring coating on the high-voltage cable;
step S3, the control module judges the uniformity of asphalt coating of the high-voltage cable according to the variance of the coating thickness of the high-voltage cable at a plurality of sampling points after pouring coating, and carries out primary adjustment on the rotating speed of the power motor when judging that the uniformity of asphalt coating of the high-voltage cable is lower than an allowable range, or carries out primary adjustment on the vertical height of the pouring chute 12 according to the horizontal inclination angle of the high-voltage cable;
step S4, the control module controls a weight sensor to detect the weight of the high-voltage cable and secondarily adjusts the power motor 6 according to the weight increasing speed of the high-voltage cable when the primary adjustment of the power motor 6 is completed;
in step S5, the control module controls the vibration sensor 29 to detect the vibration intensity of the tank 1 when the adjustment of the vertical height of the shower tank 12 is completed, and secondarily adjusts the vertical height of the shower tank 12 according to the vibration intensity of the tank 1.
Example 1
In this embodiment 1, the control module is provided with a plurality of means for adjusting the rotation speed of the power motor according to the difference Δq between the variance of the asphalt coating thickness and the preset second variance when the variance of the asphalt coating thickness triggers the preset second variance condition alone, Δq0=3 mm, Δq=q-Q2, the rotation speed of the power motor is recorded as v=960 r/min,1 < α1 < α2, α1=1.1, α2=1.2, the adjusted rotation speed of the power motor is recorded as V',
in this embodiment 1, Δq=4mm, the control module determines Δq > - Δq0 to adjust the rotation speed of the power motor to the second rotation speed V 'using the preset second rotation speed adjustment coefficient α2, and calculates V' =960 r/min×1.2=1152r/min.
Embodiment 2 as shown in fig. 1 to 5, the present embodiment provides an asphalt coating device for a high voltage cable, comprising a box 1, a melting tank 5 and a feeding port 3 separated by an elastic isolation plate 13 in the box 1, a main shaft 9, an asphalt wheel 8, a covering tray 10, a shower groove 12, a wire outlet and a sealing ring 14 in the melting tank 5.
Setting a specified heating temperature on a first temperature setting monitoring table 16 and a second temperature setting monitoring table 17 by a power switch 22 on a control panel shown in fig. 2, starting a device, setting an automatic/manual switch 23 to manual operation, adjusting input power by a power knob 24, waiting for the heating plate 4 in the box 1 to reach the set temperature, automatically cutting off a heating loop, and starting pouring; the ammeter 19 on the control panel is used for monitoring the running current, the voltmeter 20 is used for monitoring the voltage, the power meter 21 is used for monitoring the actual running power, the energizing indicator lamp 26 is used for being lighted when being energized, and the water valve control switch 27 is used for controlling the running water flow of the cooling system.
Pouring solid asphalt from the pouring opening 3, under the action of gravity, the elastic isolation plate 13 is crashed by the solid asphalt, after the pouring is finished, the elastic isolation plate 13 is automatically closed, after asphalt is melted, the asphalt wheel rotating speed knob 18 is rotated, the rotating speed is set, at the moment, the motor 15 drives the belt driving wheel 6, the belt driving wheel 6 drives the belt 7 to drive the driven wheel 9, the driven wheel 9 drives the asphalt wheel 8, asphalt in a molten state is poured onto the pouring tank 12 from the melting tank 5, overflowed asphalt falls onto the covering tray 10, the high-voltage cable is poured through the asphalt of the pouring tank 12 and the asphalt of the covering tray 10, the metal sheath of the high-voltage cable can be covered on the whole surface, and the problem of high-voltage cable leakage is avoided. Redundant asphalt on the high-voltage cable is scraped and coated by the wire outlet and the rubber sealing ring, so that the aim of uniformly coating the asphalt on the metal sheath of the high-voltage cable is fulfilled, and the waterproofness and the corrosion resistance of the high-voltage cable are improved.
As can be seen from fig. 4, the purified water outlets (not shown) are respectively connected with one ends of the copper pipe coils 28, and heat is taken away from the copper pipe coils, so that the high temperature of the copper pipe coils 28 is prevented from influencing the service life of the device, the heat taken away by the purified water is interacted with tap water through the radiator, and the heat of the copper pipe coils 28 can be normally interacted by the purified water at low temperature.
The solid asphalt is heated to a molten state, the asphalt wheel drives the molten state asphalt to be poured on the material spraying groove, and the high-efficiency and high-quality smearing of the cable and the high utilization rate of the asphalt are realized through the notch of the material spraying groove, the bottom covering tray and the sealing rubber ring. In the engineering, the medium-frequency heating mode is creatively adopted to melt the solid asphalt, so that the effect of reducing the electric energy loss is achieved. And a pure water cooling system is adopted, so that the copper pipe coil is prevented from being overheated and the corrosion of the box body is slowed down, and the service life of the device is prolonged. By adopting the control system, the melting temperature, the rotating speed of the asphalt wheel and the rotating speed of the water pump can be accurately controlled, so that the operation of asphalt melting by operators is simpler and more understandable.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An asphalt coating apparatus for a high voltage cable, comprising a housing, characterized by further comprising:
a melting module connected with the box body and used for heating and melting the solid asphalt material to output the asphalt material in a molten state;
the asphalt conveying module is partially arranged above the melting module and used for conveying the asphalt in the molten state to the position corresponding to the position to be poured, and comprises a power motor arranged below the melting module and used for providing asphalt conveying power;
the pouring module is arranged at the output end of the asphalt conveying module and used for pouring the asphalt in the molten state onto the surface of the high-voltage cable, and comprises a pouring groove connected with the inner wall of the box body and used for pouring the asphalt in the molten state to a position to be coated, a vertical telescopic component connected with the pouring groove and used for adjusting the vertical height of the pouring groove, and a visual detector arranged below the pouring groove and used for detecting the horizontal inclination angle of the high-voltage cable;
the control module is respectively connected with the melting module, the asphalt conveying module and the material spraying module, and is used for carrying out primary adjustment on the rotating speed of the power motor when the uniformity of asphalt coating of the high-voltage cable is judged to be lower than an allowable range according to the variance of the asphalt coating thickness of the high-voltage cable, or carrying out primary adjustment on the vertical height of the material spraying groove according to the horizontal inclination angle of the high-voltage cable arranged in the bottom covering tray below the material spraying groove, carrying out secondary adjustment on the rotating speed of the power motor according to the weight increasing speed of the high-voltage cable detected and calculated by the weight sensor connected with the bottom covering tray, and carrying out secondary adjustment on the vertical height of the material spraying groove according to the vibration intensity of the box body detected by the vibration sensor connected with the box body.
2. The asphalt coating apparatus for a high voltage cable according to claim 1, wherein said control module calculates a variance of asphalt coating thickness from high voltage cable asphalt coating thicknesses of a plurality of sampling points detected by said visual detector,
if the variance of the asphalt coating thickness triggers a preset first variance condition or triggers a preset second variance condition, the control module determines that the uniformity of asphalt coating of the high-voltage cable is lower than the allowable range, wherein,
the control module preliminarily judges that the roughness of the bottom-covered tray exceeds an allowable range when the variance of the asphalt coating thickness triggers a preset first variance condition independently, and secondarily judges the roughness of the bottom-covered tray according to the horizontal inclination angle of the high-voltage cable;
the control module judges that the rotating speed of the power motor is regulated when the variance of the asphalt coating thickness triggers a preset second variance condition independently;
the preset first variance condition is that the variance of the asphalt coating thickness is larger than the preset first variance and smaller than or equal to the preset second variance; the preset second variance is that the variance of the asphalt coating thickness is larger than the preset second variance; the preset first variance is smaller than the preset second variance.
3. The asphalt coating apparatus for high-voltage cables according to claim 2, wherein said control module is provided with a plurality of adjustment modes for increasing the rotation speed of said power motor according to a difference Δq between the variance of asphalt coating thickness and a preset second variance when the variance of asphalt coating thickness triggers a preset second variance condition alone, wherein each of the adjustment modes is different in the adjustment range for increasing the rotation speed of said power motor.
4. The asphalt coating apparatus for high voltage cables according to claim 3, wherein said control module makes a secondary determination of the roughness of the bottom-coated tray according to the horizontal inclination angle of the high voltage cable when the variance of the asphalt coating thickness alone triggers a preset first variance condition,
if the horizontal inclination angle of the high-voltage cable triggers a preset inclination angle condition, the control module secondarily judges that the roughness of the bottom covering tray exceeds an allowable range, and adjusts the vertical height of the material spraying groove;
the preset inclination angle condition is that the horizontal inclination angle of the high-voltage cable is larger than the preset inclination angle.
5. The asphalt coating apparatus for high voltage cables according to claim 4, wherein said control module is provided with a plurality of adjustment modes for increasing the vertical height of said shower tank according to the difference between the horizontal inclination angle of the high voltage cable and the preset inclination angle under the preset inclination angle condition, wherein each of the adjustment modes is different in the adjustment range for increasing the vertical height of said shower tank.
6. The asphalt coating apparatus for a high voltage cable according to claim 5, wherein said control module determines the effectiveness of asphalt delivery based on the rate of weight increase of the underwire tray in a first operational state,
if the weight increasing speed of the bottom-covered tray triggers a preset increasing speed condition, the control module judges that the effectiveness of asphalt conveying is lower than an allowable range, and secondarily adjusts the rotating speed of the power motor;
the preset increasing speed condition is that the weight increasing speed of the bottom covering tray is smaller than the preset increasing speed; the first running state is that the control module completes primary adjustment of the rotating speed of the power motor.
7. The asphalt coating apparatus for high-voltage cables according to claim 6, wherein said control module is provided with a plurality of secondary adjustment modes for reducing the rotation speed of said power motor according to a difference Δs between a preset growth speed and a weight growth speed of a cover tray when a first operation state is satisfied and the weight growth speed of the cover tray triggers a preset growth speed condition, wherein each of the secondary adjustment modes for reducing the rotation speed of said power motor is different in adjustment amplitude.
8. The asphalt coating apparatus for high-voltage cable according to claim 7, wherein said control module determines whether the stability of the overall structure is within an allowable range according to the vibration intensity of the tank in the second operation state,
if the vibration intensity of the box body triggers a preset vibration intensity condition, the control module judges that the stability of the whole structure is lower than an allowable range, and the vertical height of the shower groove is secondarily adjusted;
the preset vibration intensity condition is that the vibration intensity of the box body is larger than the preset vibration intensity; and the second running state is that the control module completes the primary adjustment of the shower groove.
9. The asphalt coating apparatus for high voltage cables according to claim 8, wherein the control module is provided with a plurality of secondary adjustment modes for reducing the vertical height of the shower tank according to a difference Δt between the vibration intensity of the tank and the preset vibration intensity when the vibration intensity of the tank triggers the preset vibration intensity condition, wherein each of the secondary adjustment modes is different in an adjustment range for reducing the vertical height of the shower tank.
10. A pitch coating method using the pitch coating apparatus for a high-voltage cable according to any one of claims 1 to 9, characterized by comprising:
step S1, conveying solid asphalt into a melting module, and heating and melting the solid asphalt by a heating assembly arranged in the melting module to output asphalt in a molten state;
s2, conveying the asphalt material in the molten state to a position to be poured through an asphalt conveying module, and controlling the pouring module to perform pouring coating on the high-voltage cable;
step S3, the control module judges the uniformity of asphalt coating of the high-voltage cable according to the variance of the coating thickness of the high-voltage cable at a plurality of sampling points after pouring coating, and carries out primary adjustment on the rotating speed of the power motor when judging that the uniformity of asphalt coating of the high-voltage cable is lower than an allowable range, or carries out primary adjustment on the vertical height of the pouring chute according to the horizontal inclination angle of the high-voltage cable;
step S4, the control module controls a weight sensor to detect the weight of the high-voltage cable and secondarily adjusts the power motor according to the weight increasing speed of the high-voltage cable when the primary adjustment of the power motor is completed;
and S5, controlling the vibration sensor to detect the vibration intensity of the box body when the control module completes the adjustment of the vertical height of the shower groove, and secondarily adjusting the vertical height of the shower groove according to the vibration intensity of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311326382.2A CN117410043A (en) | 2023-10-13 | 2023-10-13 | Asphalt coating device for high-voltage cable and coating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311326382.2A CN117410043A (en) | 2023-10-13 | 2023-10-13 | Asphalt coating device for high-voltage cable and coating method thereof |
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| CN117410043A true CN117410043A (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311326382.2A Pending CN117410043A (en) | 2023-10-13 | 2023-10-13 | Asphalt coating device for high-voltage cable and coating method thereof |
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| Country | Link |
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| CN (1) | CN117410043A (en) |
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- 2023-10-13 CN CN202311326382.2A patent/CN117410043A/en active Pending
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