CN115841892B - High-temperature-resistant silica gel cable and production process thereof - Google Patents
High-temperature-resistant silica gel cable and production process thereof Download PDFInfo
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- CN115841892B CN115841892B CN202310132351.7A CN202310132351A CN115841892B CN 115841892 B CN115841892 B CN 115841892B CN 202310132351 A CN202310132351 A CN 202310132351A CN 115841892 B CN115841892 B CN 115841892B
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 156
- 239000000741 silica gel Substances 0.000 title claims abstract description 156
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 156
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 129
- 230000008018 melting Effects 0.000 claims abstract description 129
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 238000001746 injection moulding Methods 0.000 claims abstract description 17
- 230000009471 action Effects 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000007790 scraping Methods 0.000 claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 43
- 230000007246 mechanism Effects 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 30
- 230000008569 process Effects 0.000 claims description 29
- 239000002671 adjuvant Substances 0.000 claims description 24
- 238000010298 pulverizing process Methods 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 7
- 238000010257 thawing Methods 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000003712 anti-aging effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000012745 toughening agent Substances 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 238000010309 melting process Methods 0.000 claims description 2
- 239000011164 primary particle Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The invention discloses a high-temperature-resistant silica gel cable and a production process thereof, comprising the following steps: mixing and dissolving the silica gel and the auxiliary agent in the raw material formula, and then adding the mixture to an injection molding machine to obtain a silica gel material; respectively adding silica gel and auxiliary agents into different crushing pipes, starting a driving motor to work, and driving crushing paddles in a plurality of crushing pipes to rotate under the meshing action of a driving gear and a driven gear; the crushed silica gel and auxiliary agent automatically flow into a material homogenizing plate of a melting pipe along the crushing pipe under the action of gravity, and the crushed material can more uniformly enter a heating pipe under the action of the rotation of a scraping plate driven by a rotating motor, then melt under the action of heat of the heating pipe and enter a stirring box from a material collecting head; wrapping the obtained silica gel material on a conductor inner core to obtain the high-temperature-resistant silica gel cable; the invention can correspondingly increase the crushing and heating time, so that the material treatment is more qualified.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a high-temperature-resistant silica gel cable and a production process thereof.
Background
Chinese patent CN110504073a discloses a method for preparing silica gel cable and production line; the preparation method of the silica gel cable comprises the following steps: s1, forming a prefabricated layer outside a wire core; the prefabricated layer comprises silica gel; s2, carrying out oil treatment on the prefabricated layer to color the prefabricated layer; here, the pre-fabricated layer is subjected to an oil treatment to attach the silicone resin outside the pre-fabricated layer; s3, vulcanizing the colored prefabricated layer to fix the color of the prefabricated layer; then, wrapping the prefabricated layer with fixed color to form a silicone resin layer, thereby obtaining a silica gel cable;
in the prior art, the silica gel insulating layer on the surface of the high-temperature-resistant silica gel cable is usually formed by mixing and melting all raw materials and then adding the mixture into an injection molding machine, and in this way, the melting conditions of the mixture are different due to the properties among different materials, so that when injection molding is caused, part of particles are not melted to affect the quality of the silica gel insulating layer prepared by the mixture, and the problem that the preparation time of the high-temperature-resistant silica gel cable is prolonged due to the fact that the mixture can be melted as much as possible is solved.
Disclosure of Invention
The invention aims to solve the problems of the background technology and provides a high-temperature-resistant silica gel cable and a production process thereof.
The aim of the invention can be achieved by the following technical scheme:
a production process of a high-temperature-resistant silica gel cable wire comprises the following steps:
step 1: mixing and dissolving silica gel and an auxiliary agent, and then adding the mixture to an injection molding machine to obtain a silica gel material;
step 2: wrapping the obtained silica gel material on a conductor inner core to obtain the high-temperature-resistant silica gel cable;
the specific working process of the step 1 is as follows:
step 11: respectively adding silica gel and auxiliary agents into different crushing pipes, starting a driving motor to work, and driving crushing paddles in a plurality of crushing pipes to rotate under the meshing action of a driving gear and a driven gear;
step 12: the crushed silica gel and the auxiliary agent automatically flow into the material homogenizing plate of the melting pipe along the crushing pipe under the action of gravity, and the crushed material can more uniformly enter the heating pipe under the action of the rotation of the scraping plate driven by the rotating motor and then melt under the action of the heat of the heating pipe and enter the stirring box from the material collecting head.
As a further scheme of the invention: step 1 further comprises the steps of:
the obtained fluid of the silica gel and the auxiliary agent is stirred and mixed in a stirring box and then enters an injection molding machine.
As a further scheme of the invention: the bottom of smashing the pipe and melt the top swing joint of pipe, and smash the pipe and melt the pipe intercommunication each other, smash the top of pipe and be provided with the charge door, melt the discharge gate and the flexible pipe intercommunication of pipe, flexible pipe and agitator tank inner chamber connection.
As a further scheme of the invention: the pulverizing pipe and the melting pipe are arranged in an annular array.
As a further scheme of the invention: the crushing pipe is internally provided with a crushing mechanism, the crushing mechanism comprises a driving motor and crushing paddles, each crushing pipe is internally provided with a crushing paddle, the crushing paddles are connected with a driven gear through a telescopic coupling, the driven gear is meshed with a driving gear, and the driving gear is connected with the output end of the driving motor.
As a further scheme of the invention: the heating mechanism is arranged in the melting pipe, the heating pipe of the heating mechanism is arranged in the melting pipe in an annular mode, the top of the heating pipe is provided with a material homogenizing plate, the top of the material homogenizing plate is provided with a scraping plate, and the scraping plate is rotationally arranged on the material homogenizing plate.
As a further scheme of the invention: the bottom of the heating pipe is provided with a collecting head which is of a hemispherical structure.
As a further scheme of the invention: the top of the stay tube of flexible pipe slides and is provided with the lifter, and the bottom of stay tube is connected in the agitator tank, is provided with the baffle in the stay tube, and the top of baffle is provided with the cylinder, and the output and the lifter connection of cylinder, the bottom of baffle are provided with the mixer, and the mixer extends to in the agitator tank.
A high temperature resistant silica gel cable line comprises a conductor inner core, wherein a silica gel insulating layer is arranged outside the conductor inner core;
wherein, the silica gel insulating layer comprises the following raw materials in parts by weight: 90 parts of silica gel and 30 parts of auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 15 parts of aluminum nitride micro powder, 10 parts of toughening agent, 3 parts of vulcanization accelerator and 2 parts of anti-aging agent.
The invention has the beneficial effects that:
according to the production process, the lifting tube is driven to move up and down by controlling the cylinder to work, when the lifting tube moves downwards, the included angle between the crushing tube and the melting tube is reduced, the crushing tube and the melting tube are closer to the horizontal degree, so that the time for the silica gel material to flow into the stirring box is increased, and the problems of larger crushed particle size and incomplete dissolution during heating and dissolving when the material is crushed can be solved, and the corresponding crushing and heating time is increased by controlling the lifting tube to move downwards, so that the material treatment is more qualified;
according to the invention, the crushing and melting are integrated through the melting mechanism consisting of the crushing pipe and the melting pipe, so that the transferring time between the crushing pipe and the melting pipe is effectively shortened, and the crushed materials can be directly melted, thereby further improving the crushing efficiency of the silica gel raw materials.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic view of a cable production device according to the present invention;
FIG. 2 is a schematic view of the melting mechanism of the present invention;
FIG. 3 is a schematic view of the pulverizing mechanism of the present invention;
FIG. 4 is a schematic view of the heating mechanism of the present invention;
FIG. 5 is a schematic structural view of the connection relationship between the material homogenizing plate and the heating pipe;
fig. 6 is a system block diagram of the monitoring system of the present invention.
In the figure: 1. a melting mechanism; 2. a stirring tank; 3. an injection molding machine; 11. crushing a pipe; 12. a melting tube; 13. a support tube; 14. a lifting tube; 15. a driving motor; 16. crushing paddles; 110. a collecting head; 111. a material homogenizing plate; 112. a scraping plate; 113. and (5) heating the pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention relates to a high-temperature-resistant silica gel cable wire, which comprises a conductor inner core, wherein a silica gel insulating layer is arranged outside the conductor inner core;
wherein, the silica gel insulating layer comprises the following raw materials in parts by weight: 90 parts of silica gel and 30 parts of auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 15 parts of aluminum nitride micro powder, 10 parts of toughening agent, 3 parts of vulcanization accelerator and 2 parts of anti-aging agent.
Example 2
Based on the above embodiment 1, the production process of the high temperature resistant silica gel cable according to the invention comprises the following steps:
step 1: mixing and dissolving the silica gel and the auxiliary agent in the raw material formula, and then adding the mixture to an injection molding machine to obtain a silica gel material;
step 2: and wrapping the obtained silica gel material on the conductor inner core to obtain the high-temperature-resistant silica gel cable.
The specific working process of the step 1 is as follows:
step 11: the silica gel and the auxiliary agent are respectively added into different crushing pipes 11, the driving motor 15 is started to work, and the crushing paddles 16 in the crushing pipes 11 are driven to rotate through the meshing action of the driving gear and the driven gear, so that the silica gel and the auxiliary agent are crushed into smaller particles, and the silica gel and the auxiliary agent raw materials can be heated and melted more quickly;
step 12: the crushed silica gel and auxiliary agent automatically flow into the material homogenizing plate 111 of the melting pipe 12 along the crushing pipe 11 under the action of gravity, and the crushed material can more uniformly enter the heating pipe 113 under the action of the rotation of the scraping plate 112 driven by the rotating motor, then melt under the action of the heat of the heating pipe 113 and enter the stirring tank 2 from the material collecting head 110;
step 13: the obtained fluid of the silica gel and the auxiliary agent is stirred and mixed in a stirring box 2, and then enters an injection molding machine 3 for injection molding and is extruded from a die head to obtain a silica gel material;
example 3
Referring to fig. 1 to 5, based on the above example 2, the silica gel material prepared in the step 1 is completed by the following equipment: the device specifically comprises a melting mechanism 1, a stirring box 2 and an injection molding machine 3;
the output end of the melting mechanism 1 is connected with a stirring box 2, and the discharge end of the stirring box 2 is connected with an injection molding machine 3; in the preparation process, the rubber raw material of the cable is added into a melting mechanism 1 to be melted into liquid, then flows into a stirring box 2 to be mixed, then enters an injection molding machine 3, is injection molded, and is extruded from a die head to be wrapped on the surface of the cable, so that the cable is obtained;
wherein the melting mechanism 1 comprises a crushing pipe 11 and a melting pipe 12; the top annular array of the telescopic pipe is provided with a plurality of crushing pipes 11, the bottom annular array of the telescopic pipe is provided with a plurality of melting pipes 12, the bottom of the crushing pipe 11 is movably connected with the top of the melting pipe 12, the crushing pipe 11 and the melting pipe 12 are mutually communicated, the top of the crushing pipe 11 is provided with a charging hole, the discharging hole of the melting pipe 12 is communicated with the telescopic pipe, and the telescopic pipe is connected with the inner cavity of the stirring tank 2;
preferably, a crushing mechanism is arranged in each crushing pipe 11, the crushing mechanism comprises a driving motor 15 and crushing paddles 16, each crushing pipe 11 is internally provided with each crushing paddle 16, each crushing paddle 16 is connected with a driven gear through a telescopic coupling, the driven gears are in meshed connection with driving gears, and the driving gears are connected with the output end of the driving motor 15; the crushing mechanism can enable the crushing paddles 16 to rotate simultaneously in a gear transmission mode, so that the efficiency of crushing the silica gel raw materials is improved;
wherein, the driving motor 15, the driving gear and the driven gear are all arranged at the top of the telescopic pipe;
a heating mechanism is arranged in the melting pipe 12 and comprises a collecting head 110, a material homogenizing plate 111, a scraping plate 112 and a heating pipe 113; the heating pipe 113 is annularly arranged in the melting pipe 12, a material homogenizing plate 111 is arranged at the top of the heating pipe 113, a scraping plate 112 is arranged at the top of the material homogenizing plate 111, the scraping plate 112 is rotatably arranged on the material homogenizing plate 111 through a rotating motor, a material collecting head 110 is arranged at the bottom of the heating pipe 113, and the material collecting head 110 is of a hemispherical structure; according to the heating mechanism disclosed by the invention, crushed materials can be uniformly distributed, so that each heating pipe 113 can be used for melting the crushed materials, and the heating pipe 113 is used for heating and dissolving silica gel raw materials, so that heating and melting can be completed in the material flow transferring process, and the preparation efficiency of a silica gel cable can be effectively improved;
specifically, the telescopic pipe comprises a supporting pipe 13, a lifting pipe 14, a partition board, a stirrer and a cylinder, wherein the lifting pipe 14 is arranged at the top of the supporting pipe 13 in a sliding manner, the bottom of the supporting pipe 13 is connected in the stirring box 2, the partition board is arranged in the supporting pipe 13, the cylinder is arranged at the top of the partition board, the output end of the cylinder is connected with the lifting pipe 14, the stirrer is arranged at the bottom of the partition board, and the stirrer extends into the stirring box 2;
wherein, the lifting pipe 14 is movably connected with the crushing pipe 11, and the supporting pipe 13 is movably communicated with the melting pipe 12;
according to the telescopic pipe structure, the lifting pipe 14 is driven to move up and down by controlling the cylinder to work, when the lifting pipe 14 moves downwards, the included angle between the crushing pipe 11 and the melting pipe 12 is reduced, the crushing pipe 11 and the melting pipe 12 are closer to the horizontal degree, so that the time for the silica gel material to flow into the stirring box 2 is increased, and the problems of larger crushed particle size and incomplete dissolution during heating and dissolving when the material is crushed can be solved, and the corresponding crushing and heating time is increased by controlling the lifting pipe 14 to move downwards, so that the material treatment is more qualified;
and the invention enables the crushing and melting to be integrated through the melting mechanism 1 formed by the crushing pipe 11 and the melting pipe 12, effectively shortens the transferring time between the crushing pipe 11 and the melting pipe, and enables the crushed materials to be directly melted, thereby further improving the crushing efficiency of the silica gel raw materials.
Example 4
Referring to fig. 6, based on the above embodiment 3, a monitoring system is provided on the thawing mechanism 1, the monitoring system including an acquisition unit;
the acquisition unit acquires the initial particle sizes of the silica gel and the auxiliary agent, and marks the initial particle sizes as Dg and Df; the crushing mechanism respectively crushes the silica gel and the auxiliary agent at a unit time, and marks Vg and Vf respectively; and an included angle Jj between the pulverizing pipe 11 and the thawing pipe 12;
the specific working process of the acquisition unit is as follows:
step 1: obtaining the initial particle diameter Dg of silica gel, the initial particle diameter Df of the auxiliary agent, the crushing rate Vg of silica gel, the crushing rate Vf of the auxiliary agent, and the included angle Jj between the crushing pipe 11 and the melting pipe 12;
step 2: substituting the initial particle diameter Dg of the obtained silica gel, the silica gel crushing rate Vg, and the included angle Jj between the crushing pipe 11 and the melting pipe 12 into the formula
Calculating a silica gel crushing value Fg, wherein a1, a2 and a3 are proportionality coefficients, the value of a1 is 1.56, the value of a2 is 2.47, and the value of a3 is 2.45; jj is in the range of 10-90 °;
substituting the obtained primary particle diameter Df of the adjuvant, the pulverizing rate Vf of the adjuvant, and the included angle Jj between the pulverizing pipe 11 and the thawing pipe 12 into the formula
Calculating to obtain an auxiliary crushing value Ff; wherein b1, b2 and b3 are all proportionality coefficients, b1 takes on a value of 3.45, b2 takes on a value of 5.14, and b3 takes on a value of 7.14; jj is in the range of 10-90 °;
an analysis unit for obtaining a silica gel crushing value Fg and an adjuvant crushing value Ff, and comparing the silica gel crushing value Fg with the adjuvant crushing value Ff to obtain a particle size proportionality coefficient;
the specific working process of the analysis unit is as follows:
step 1: substituting the obtained silica gel crushing value Fg and the adjuvant crushing value Ff into the formula
Calculating to obtain a particle size proportionality coefficient XL; />
Step 2: comparing the obtained particle size proportionality coefficient Xl with a particle size proportionality coefficient threshold value:
if the particle size proportionality coefficient XL is smaller than the particle size proportionality coefficient threshold value, the particle size difference between the silica gel and the auxiliary agent is smaller after the silica gel and the auxiliary agent are crushed by a crushing mechanism, so that the process requirements are met, and a crushing qualified signal is produced;
the particle size difference between the two is smaller, so that the silica gel and the auxiliary agent can be effectively ensured to reach the requirement of melting under the same technological requirement in the subsequent melting process, and therefore, the condition that a certain component cannot be effectively melted under the same melting condition due to large crushing particle size, and the particle size of the certain component is not effectively melted, so that the particle size of the certain component is also partially fed into the injection molding machine 3, and the preparation quality of the high-temperature-resistant silica gel is influenced;
if the particle size proportionality coefficient XL is larger than the particle size proportionality coefficient threshold value, the particle size difference between the silica gel and the auxiliary agent is larger after the silica gel and the auxiliary agent are crushed by a crushing mechanism, the process requirement is not met, and a crushing failure signal is produced;
the processing unit receives the crushing qualified signals and the crushing unqualified signals, and when the crushing qualified signals are received, the crushing mechanism and the heating mechanism are controlled to work normally; when receiving the crushing failure signal, analyzing and judging the conditions of the silica gel and the auxiliary agent according to the melting of the heating mechanism;
the specific working process of the processing unit is as follows:
step 1: obtaining the melting rate Lg of the silica gel at the process temperature and the melting rate Lf of the auxiliary agent at the process temperature; and an included angle Jj between the pulverizing pipe 11 and the thawing pipe 12;
step 2: substituting the obtained silica gel crushing value Fg, the melting rate Lg of the silica gel at the process temperature and the included angle Jj between the crushing pipe 11 and the melting pipe 12 into a formula
Calculating to obtain a silica gel melting value Zg; wherein, c1, c2 and c3 are all proportionality coefficients, c1 takes on a value of 0.85, c2 takes on a value of 0.74, c3 takes on a value of 0.83, alpha is an error correction factor, and takes on a value of 1.32;
substituting the obtained adjuvant crushing value Ff, the melting rate Lf of the adjuvant at the process temperature, and the included angle Jj between the crushing pipe 11 and the melting pipe 12 into the formula
Calculating to obtain an auxiliary melting value Zf; wherein d1, d2 and d3 are proportionality coefficients, d1 takes on a value of 0.45, d2 takes on a value of 0.31, d3 takes on a value of 0.61, beta is an error correction factor, and the value of 1.85;
step 3: comparing the obtained silica gel melting value Zg and the auxiliary melting value Zf with corresponding threshold values respectively:
specifically, if the silica gel melting value Zg is greater than the silica gel melting threshold, generating a silica gel melting qualified signal; if the silica gel melting value Zg is smaller than the silica gel melting threshold value, generating a silica gel melting failure signal;
if the adjuvant melting value Zg is larger than the adjuvant melting threshold, generating a qualified adjuvant melting signal; if the adjuvant melting value Zg is smaller than the adjuvant melting threshold, generating a adjuvant melting failure signal;
the regulation and control unit is used for receiving the silica gel melting qualified signal, the silica gel melting unqualified signal, the auxiliary melting qualified signal and the auxiliary melting unqualified signal and carrying out fusion treatment on the signals;
the specific working process of the regulating and controlling unit is as follows:
step 1: when receiving the silica gel melting qualified signal and the auxiliary agent melting qualified signal at the same time, generating a high-temperature-resistant silica gel process qualified signal, and adding materials of the silica gel and the auxiliary agent into the crushing pipe 11 for preparation production;
step 2: when receiving the silica gel melting disqualification signal and the auxiliary melting disqualification signal, generating a high-temperature-resistant silica gel process disqualification signal, and adding the materials of the silica gel and the auxiliary into the crushing pipe 11 for preparation production;
step 3: generating an adjusting signal when receiving a silica gel melting qualified signal and an auxiliary melting unqualified signal or the silica gel melting unqualified signal and the auxiliary melting qualified signal at the same time; adding materials of silica gel and auxiliary agents into a crushing pipe 11 for preparation and production;
wherein, the cylinder is controlled to work to drive the lifting pipe 14 to move, and the included angle Jj between the crushing pipe 11 and the melting pipe 12 is adjusted to ensure that the finally obtained silica gel and auxiliary agent are melted to be qualified, and the value of the included angle Jj is calculated;
therefore, the monitoring system of the invention combines the initial particle sizes of the silica gel and the auxiliary agent and the crushing and melting conditions in the melting mechanism 1, so that the silica gel and the auxiliary agent enter the injection molding machine 3 in a qualified melting state, and the quality of a high-temperature-resistant silica gel cable is ensured.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (9)
1. The production process of the high-temperature-resistant silica gel cable is characterized by comprising the following steps of:
step 1: mixing and dissolving silica gel and an auxiliary agent, and then adding the mixture to an injection molding machine to obtain a silica gel material;
step 2: wrapping the obtained silica gel material on a conductor inner core to obtain the high-temperature-resistant silica gel cable;
the specific working process of the step 1 is as follows:
step 11: silica gel and auxiliary agents are respectively added into different crushing pipes (11), a driving motor (15) is started to work, and crushing paddles (16) in a plurality of crushing pipes (11) are driven to rotate under the meshing action of a driving gear and a driven gear;
step 12: the crushed silica gel and auxiliary agent automatically flow into a material homogenizing plate (111) of a melting pipe (12) along a crushing pipe (11) under the action of gravity, and crushed materials enter a heating pipe (113) under the action of a rotating motor driving a scraping plate (112) to rotate, then melt under the action of heat of the heating pipe (113), and enter a stirring box (2) from a material collecting head (110);
the crushing pipe and melting pipe are combined into a melting mechanism, a monitoring system is arranged on the melting mechanism, and the monitoring system comprises an acquisition unit;
the acquisition unit acquires the initial particle sizes of the silica gel and the auxiliary agent, and marks the initial particle sizes as Dg and Df; the crushing mechanism respectively crushes the silica gel and the auxiliary agent at a unit time, and marks Vg and Vf respectively; and an included angle Jj between the pulverizing tube and the thawing tube;
the specific working process of the acquisition unit is as follows:
obtaining the initial particle diameter Dg of silica gel, the initial particle diameter Df of an auxiliary agent, the crushing rate Vg of the silica gel, the crushing rate Vf of the auxiliary agent and an included angle Jj between a crushing pipe and a melting pipe;
substituting the initial particle diameter Dg of the obtained silica gel, the silica gel crushing rate Vg, and the included angle Jj between the crushing pipe and the melting pipe into the formula
Calculating a silica gel crushing value Fg, wherein a1, a2 and a3 are proportionality coefficients, the value of a1 is 1.56, the value of a2 is 2.47, and the value of a3 is 2.45; jj is in the range of 10-90 °;
substituting the obtained primary particle diameter Df of the adjuvant, the pulverizing rate Vf of the adjuvant, and the included angle Jj between the pulverizing pipe and the thawing pipe into the formula
Calculating to obtain an auxiliary crushing value Ff; wherein b1, b2 and b3 are all proportionality coefficients, b1 takes on a value of 3.45, b2 takes on a value of 5.14, and b3 takes on a value of 7.14; jj is in the range of 10-90 °;
an analysis unit for obtaining a silica gel crushing value Fg and an adjuvant crushing value Ff, and comparing the silica gel crushing value Fg with the adjuvant crushing value Ff to obtain a particle size proportionality coefficient;
the specific working process of the analysis unit is as follows:
substituting the obtained silica gel crushing value Fg and the adjuvant crushing value Ff into the formula
Calculating to obtain a particle size proportionality coefficient XL;
comparing the obtained particle size proportionality coefficient Xl with a particle size proportionality coefficient threshold value:
if the particle size proportionality coefficient XL is smaller than the particle size proportionality coefficient threshold value, the particle size difference between the silica gel and the auxiliary agent is smaller after the silica gel and the auxiliary agent are crushed by a crushing mechanism, so that the process requirements are met, and a crushing qualified signal is produced;
the particle size difference between the two is smaller, so that the silica gel and the auxiliary agent can be effectively ensured to reach the requirement of melting under the same technological requirement in the subsequent melting process, and therefore, the condition that a certain component cannot be effectively melted under the same melting condition due to large crushing particle size, and the particle size of the certain component is not effectively melted, so that the particle size of the certain component is also partially fed into an injection molding machine, and the preparation quality of the high-temperature-resistant silica gel is influenced;
if the particle size proportionality coefficient XL is larger than the particle size proportionality coefficient threshold value, the particle size difference between the silica gel and the auxiliary agent is larger after the silica gel and the auxiliary agent are crushed by a crushing mechanism, the process requirement is not met, and a crushing failure signal is produced;
the processing unit receives the crushing qualified signals and the crushing unqualified signals, and when the crushing qualified signals are received, the crushing mechanism and the heating mechanism are controlled to work normally; when receiving the crushing failure signal, analyzing and judging the conditions of the silica gel and the auxiliary agent according to the melting of the heating mechanism;
the specific working process of the processing unit is as follows:
obtaining the melting rate Lg of the silica gel at the process temperature and the melting rate Lf of the auxiliary agent at the process temperature; and an included angle Jj between the pulverizing tube and the thawing tube;
substituting the obtained silica gel crushing value Fg, the melting rate Lg of the silica gel at the process temperature and the included angle Jj between the crushing pipe and the melting pipe into a formula
Calculating to obtain a silica gel melting value Zg; wherein, c1, c2 and c3 are all proportionality coefficients, c1 takes on a value of 0.85, c2 takes on a value of 0.74, c3 takes on a value of 0.83, alpha is an error correction factor, and takes on a value of 1.32;
substituting the obtained pulverizing value Ff of the auxiliary agent, the melting rate Lf of the auxiliary agent at the process temperature and the included angle Jj between the pulverizing pipe and the melting pipe into a formula
Calculating to obtain an auxiliary melting value Zf; wherein d1, d2 and d3 are proportionality coefficients, d1 takes on a value of 0.45, d2 takes on a value of 0.31, d3 takes on a value of 0.61, beta is an error correction factor, and the value of 1.85;
comparing the obtained silica gel melting value Zg and the auxiliary melting value Zf with corresponding threshold values respectively:
if the silica gel melting value Zg is larger than the silica gel melting threshold, generating a silica gel melting qualified signal; if the silica gel melting value Zg is smaller than the silica gel melting threshold value, generating a silica gel melting failure signal;
if the adjuvant melting value Zg is larger than the adjuvant melting threshold, generating a qualified adjuvant melting signal; if the adjuvant melting value Zg is smaller than the adjuvant melting threshold, generating a adjuvant melting failure signal;
the regulation and control unit is used for receiving the silica gel melting qualified signal, the silica gel melting unqualified signal, the auxiliary melting qualified signal and the auxiliary melting unqualified signal and carrying out fusion treatment on the signals;
the specific working process of the regulating and controlling unit is as follows:
when receiving the silica gel melting qualified signal and the auxiliary agent melting qualified signal at the same time, generating a high-temperature-resistant silica gel process qualified signal, and adding materials of the silica gel and the auxiliary agent into a crushing pipe for preparation production;
when receiving the silica gel melting disqualification signal and the auxiliary melting disqualification signal, generating a high-temperature-resistant silica gel process disqualification signal, and adding the materials of the silica gel and the auxiliary into a crushing pipe for preparation production;
generating an adjusting signal when receiving a silica gel melting qualified signal and an auxiliary melting unqualified signal or the silica gel melting unqualified signal and the auxiliary melting qualified signal at the same time; adding materials of silica gel and auxiliary agents into a crushing pipe for preparation and production;
wherein, through control cylinder work, drive the lifting tube and remove, adjust crushing pipe and melt the contained angle Jj between the pipe for finally obtained silica gel and auxiliary agent melt qualified, and calculate and obtain contained angle Jj numerical value.
2. The process for producing a high temperature resistant silica gel cable according to claim 1, wherein step 1 further comprises the steps of:
the obtained fluid of silica gel and auxiliary agent is stirred and mixed in a stirring tank (2), and then enters an injection molding machine (3).
3. The production process of the high-temperature-resistant silica gel cable line according to claim 2, wherein the bottom of the crushing pipe (11) is movably connected with the top of the melting pipe (12), the crushing pipe (11) is mutually communicated with the melting pipe (12), a charging port is arranged at the top of the crushing pipe (11), the discharging port of the melting pipe (12) is communicated with a telescopic pipe, and the telescopic pipe is connected with the inner cavity of the stirring box (2).
4. A production process of a high-temperature-resistant silica gel cable according to claim 3, wherein a plurality of pulverizing pipes (11) and melting pipes (12) are provided in a ring-shaped array.
5. The production process of the high-temperature-resistant silica gel cable line according to claim 4, wherein a crushing mechanism is arranged in each crushing pipe (11), the crushing mechanism comprises a driving motor (15) and crushing paddles (16), each crushing pipe (11) is internally provided with each crushing paddle (16), each crushing paddle (16) is connected with a driven gear through a telescopic coupling, the driven gears are meshed with driving gears, and the driving gears are connected with the output end of the driving motor (15).
6. The production process of the high-temperature-resistant silica gel cable line according to claim 5, wherein a heating mechanism is arranged in the melting pipe (12), a heating pipe (113) of the heating mechanism is annularly arranged in the melting pipe (12), a material homogenizing plate (111) is arranged at the top of the heating pipe (113), a scraping plate (112) is arranged at the top of the material homogenizing plate (111), and the scraping plate (112) is rotatably arranged on the material homogenizing plate (111).
7. The production process of the high-temperature-resistant silica gel cable line according to claim 6, wherein a collecting head (110) is arranged at the bottom of the heating pipe (113), and the collecting head (110) is of a hemispherical structure.
8. The production process of the high-temperature-resistant silica gel cable line according to claim 7, wherein a lifting tube (14) is slidably arranged at the top of a supporting tube (13) of the telescopic tube, the bottom of the supporting tube (13) is connected in the stirring box (2), a partition plate is arranged in the supporting tube (13), an air cylinder is arranged at the top of the partition plate, the output end of the air cylinder is connected with the lifting tube (14), a stirrer is arranged at the bottom of the partition plate, and the stirrer extends into the stirring box (2).
9. The high-temperature-resistant silica gel cable prepared by the production process according to claim 8, which is characterized by comprising a conductor inner core, wherein a silica gel insulating layer is arranged outside the conductor inner core;
wherein, the silica gel insulating layer comprises the following raw materials in parts by weight: 90 parts of silica gel and 30 parts of auxiliary agent;
the auxiliary agent comprises the following raw materials in parts by weight: 15 parts of aluminum nitride micro powder, 10 parts of toughening agent, 3 parts of vulcanization accelerator and 2 parts of anti-aging agent.
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| CN103608731A (en) * | 2011-06-13 | 2014-02-26 | 佳能株式会社 | Heat treating apparatus for powder particles and method of producing toner |
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| CN101836265A (en) * | 2007-10-22 | 2010-09-15 | 日本化学工业株式会社 | Coated conductive powder and conductive adhesive using the same |
| CN103608731A (en) * | 2011-06-13 | 2014-02-26 | 佳能株式会社 | Heat treating apparatus for powder particles and method of producing toner |
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Denomination of invention: A high-temperature resistant silicone cable and its production process Effective date of registration: 20231213 Granted publication date: 20230425 Pledgee: Jiangyin branch of Bank of China Ltd. Pledgor: Jiangyin Haosheng electrical cable manufacturing Co.,Ltd. Registration number: Y2023980070328 |
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