CN112289662A - Novel reversible thermosensitive ABB fuse early warning insulating sheath material and preparation method thereof - Google Patents
Novel reversible thermosensitive ABB fuse early warning insulating sheath material and preparation method thereof Download PDFInfo
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- CN112289662A CN112289662A CN202011288250.1A CN202011288250A CN112289662A CN 112289662 A CN112289662 A CN 112289662A CN 202011288250 A CN202011288250 A CN 202011288250A CN 112289662 A CN112289662 A CN 112289662A
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- insulating sheath
- thermosensitive color
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/47—Means for cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/34—Distinguishing marks, e.g. colour coding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H2085/0233—Details with common casing for fusible elements inserted in more than one phase or more than one circuit
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- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a novel reversible thermosensitive ABB fuse early warning insulating sheath material and a preparation method thereof, the novel reversible thermosensitive ABB fuse early warning insulating sheath material comprises an insulating sheath, a fuse is arranged in the insulating sheath, the fuse is fixedly connected with the insulating sheath through a binding post, the insulating sheath is composed of a front sheath and a rear sheath, a plurality of heat dissipation plates are uniformly and fixedly connected on the front side surface of the front sheath, a plurality of thermosensitive color changing columns are arranged between the heat dissipation plates, heat dissipation grooves are respectively arranged on the side surfaces of the front sheath and the rear sheath, the insulating sheath is formed by processing the insulating sheath material through a blow molding machine, a plurality of thermosensitive color changing columns are fixedly connected on the front sheath, the thermosensitive color changing columns can play a thermal early warning function by increasing the thermosensitive color changing function, an inspector is effectively reminded of the color change of the thermosensitive color changing columns on the sheath, a fault is, the maintenance is convenient.
Description
Technical Field
The invention relates to a novel reversible thermosensitive ABB fuse early warning insulating sheath material and a preparation method thereof, and belongs to the field of electric power protection sleeves.
Background
The rubber material is a high polymer material capable of rapidly recovering deformation under large deformation, in recent years, rapid development of the rubber industry puts forward higher requirements on rubber products, the rubber material must develop towards functionalization, refinement and diversification, the traditional single rubber material cannot completely meet the rapidly-developed use requirements, and the technical problem can be solved by selecting and mixing multiple materials. The insulating protective cover is made of high polymer materials and silicon rubber materials with strong ageing resistance, has the advantages of good toughness, strong hydrophobicity, ultraviolet resistance and the like, is suitable for insulating safety protective equipment of terminal ends of power equipment, distribution transformers, lightning rods, outdoor switches and the like, and can effectively prevent accidents such as power failure, power equipment damage, electric shock and the like caused by interphase paragraphs or grounding of various exposed terminals due to various reasons, thereby ensuring the safe operation of the power equipment; the common protective sleeve is made of silicon rubber which can be phase-split and is formed by mixing common silicon rubber through an HTV solid high-temperature vulcanization process. Although it has certain hydrophobic property; the corrosion of acid rain to the joint can be eliminated; the fault caused by foreign matter collision can be avoided. However, the electrical contacts of the common insulating sheath are not easy to dissipate heat, faults of the electrical contacts are difficult to find, the troubleshooting is time-consuming and labor-consuming, and the instrument detection and troubleshooting are inconvenient. Therefore, the early-warning insulating and protective sheath material for the reversible thermosensitive color-changing fuse and the preparation method thereof, which can be used for early warning and have good insulating effect, are technical problems to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to overcome the technical problems of the prior art and provide a novel reversible thermosensitive ABB fuse early warning insulating sheath material and a preparation method thereof, wherein a plurality of heat dissipation plates are arranged on a front sheath, the heat dissipation plates are triangular pyramid-shaped and protrude outwards from the surface of the front sheath, so that the heat exchange efficiency of the fuse with the outside in the use process can be effectively improved, the heat dissipation efficiency is improved, the heat dissipation effect of the fuse in the use process can be further improved by utilizing heat dissipation grooves arranged on the front sheath and a rear sheath, heat exchange with the outside is carried out in a larger area, a plurality of thermosensitive color-changing columns are fixedly connected on the front sheath, the thermosensitive color-changing columns can play a thermal early warning function by increasing the thermosensitive color-changing function, effectively remind a worker through the color change of the thermosensitive color-changing columns on the sheath, find faults in time and take measures to quickly eliminate hidden troubles in time, through establishing the insulating lag of one deck at the outside cover of fuse, can effectually prevent that external environment is direct to contact with the fuse, not only can prevent the fuse because external factors causes the fusing, can improve the external environment contact change temperature of fuse through the thermal-insulated effect of lag simultaneously, improve the fuse to external environment tolerance quality, can effectively solve the problem in the background art.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a novel reversible heat-sensitive ABB fuse early warning insulating sheath material, includes insulating sheath, the inside fuse that is provided with of insulating sheath, the fuse passes through terminal fixed connection insulating sheath, insulating sheath comprises preceding sheath, back sheath, even fixedly connected with a plurality of heating panel on the preceding sheath leading flank, be provided with a plurality of heat-sensitive discoloration post between the heating panel, the radiating groove has all been seted up to preceding sheath, back sheath side, insulating sheath is formed through the processing of blowing machine by insulating sheath material.
The invention is further improved in that the blow molding machine is composed of an extruder, a heating box, a feeding hopper, a molding die, a detection mechanism, a blowing mechanism and a discharge hole, wherein the feeding hopper is arranged at the top of the heating box, the detection mechanism is provided with a control panel, the blowing mechanism is arranged on one side of the detection mechanism, and the extruder is connected with the molding die through a die head.
The invention is further improved in that the forming die is composed of a die cavity, a heat dissipation plate forming partition plate and a thermosensitive color-changing column forming hole, and a sealing column for sealing is arranged on the thermosensitive color-changing column forming hole.
The invention is further improved in that the detection mechanism consists of a detection chamber, a CCD camera and a conveying conveyor belt, a heating device is arranged in the detection mechanism, the insulation sheath is subjected to high-temperature detection through the detection mechanism after being subjected to blow molding, and the insulation sheath is discharged through a discharge hole after being qualified.
The invention has the further improvement that the thermosensitive color-changing column comprises the following raw materials in parts by weight: 5-15 parts of epoxy resin, 5-10 parts of cobalt chloride hexahydrate, 1-3 parts of hexamethylenetetramine, 2-5 parts of sodium dodecyl benzene sulfonate, 3-7 parts of diphenylmethane diisocyanate, 2-5 parts of a dispersing agent, 1-5 parts of a gas phase corrosion inhibitor and 10-15 parts of nano calcium carbonate.
The preparation method of the thermosensitive color-changing column material of the reversible thermosensitive color-changing fuse is characterized by comprising the following steps:
(1) weighing the raw materials according to the components;
(2) putting weighed cobalt chloride hexahydrate and hexamethylenetetramine into a reaction kettle, adding water to dissolve, stirring and mixing uniformly, standing for 2-5 hours, adding sodium dodecyl benzene sulfonate, stirring uniformly, dropwise adding diphenylmethane diisocyanate into the reaction kettle, heating to 60-80 ℃, and keeping constant temperature for reaction for 2-4 hours to obtain a base material A;
(3) adding epoxy resin, a dispersing agent and a vapor phase corrosion inhibitor into ethanol, performing ultrasonic dispersion for 15-30 minutes, adding nano calcium carbonate, and continuing ultrasonic dispersion for 15-30 minutes to obtain a base material B;
(4) and mixing and uniformly stirring the base material A and the base material B, putting the mixture into a 120-plus 160 ℃ oven for drying for 10-18h, then putting the mixture into a ball mill for ball milling, and vulcanizing the mixture to obtain the reversible thermosensitive color-changing fuse thermosensitive color-changing column material.
A preparation method of a novel reversible thermosensitive ABB fuse early warning insulating sheath material comprises the following steps:
firstly, weighing a certain amount of butyl rubber and toluene, adding the butyl rubber and the toluene into a reaction kettle, heating to 80-90 ℃, and stirring for dissolving;
secondly, continuously introducing nitrogen into the reaction kettle for 30min, then adding stearic acid monoglyceride and benzoyl peroxide into the reaction kettle, stirring and mixing for 3-5min, then adding a thermotropic modifier into the mixture, stirring and reacting for 40-50min, then heating to 120-130 ℃, carrying out reflux reaction for 5-6h, and then evaporating the obtained product to remove the solvent in the product, thus obtaining the thermochromic butyl rubber;
thirdly, simultaneously adding the thermochromic butyl rubber, the diglycol, the zinc oxide and the paraffin oil into a plasticator for mixing for 2-3min, then adding the white carbon black into the plasticator for mixing for 2-3min, and then adding the obtained product into a blow molding machine through a charging hopper for extrusion molding to obtain a semi-finished product of the insulating protective sleeve;
and fourthly, mixing the thermosensitive color-changing column material and ethanol according to the mass ratio of 1: 0.2-0.5, injecting the mixture into a mold, heating and connecting the thermosensitive color-changing column material and the semi-finished product of the insulating protective sleeve in the third step through a mold cavity through a thermosensitive color-changing column forming hole, and cooling and forming to form the insulating protective sleeve.
The invention has the beneficial effects that: a novel reversible thermosensitive ABB fuse early warning insulating sheath material and a preparation method thereof are provided, a plurality of heat dissipation plates are arranged on a front sheath, the heat dissipation plates are in a triangular pyramid shape and protrude outwards from the surface of the front sheath, so that the heat exchange efficiency of a fuse with the outside in the use process can be effectively improved, the heat dissipation efficiency can be improved, the heat dissipation effect of the fuse in the use process can be further improved by utilizing heat dissipation grooves arranged on the front sheath and a rear sheath, heat exchange with the outside is carried out on a larger area, a plurality of thermosensitive color-changing columns are fixedly connected on the front sheath, the thermosensitive color-changing columns can play a thermal early warning function by increasing the thermosensitive color-changing function, inspectors can be effectively reminded by the color change of the thermosensitive color-changing columns on the sheath, faults can be found in time, measures can be taken in time to quickly eliminate hidden dangers, and a layer, the fuse protector can effectively prevent the external environment from directly contacting with the fuse, not only can prevent the fuse from fusing due to external factors, but also can improve the external environment contact change temperature of the fuse through the heat insulation effect of the protective sleeve and improve the tolerance performance of the fuse protector to the external environment;
the method is divided into two parts in the processing of the insulating sheath material, one part is the processing of the column material of the thermosensitive color-changing column, the other part is the processing of the insulating sheath material, in the processing process of the column material of the thermosensitive color-changing column, the thermosensitive color-changing column obtained by the processing method can timely react to the external temperature environment to realize the color change, so that the insulating sheath can realize the color change when the temperature is raised to 57 ℃, further effectively realize warning, prevent the fuse from fault fusing caused by higher external environment temperature, and facilitate the replacement of a new fuse, the insulating sheath material prepared by the method disclosed by the invention has better flame retardant effect, the insulating effect and the color reversible effect of the insulating sheath material can be improved by adding the methyl vinyl silicone rubber while ball milling, when the insulating sheath material is subjected to higher temperature, the color can be changed, and is compared with the reaction of the thermosensitive color-changing column, the system can remind inspection personnel of faults in time, and is convenient to overhaul.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a structural diagram of a blow molding machine for processing a novel reversible thermosensitive ABB fuse early warning insulating sheath material.
FIG. 2 is an internal structure diagram of the fuse with the early warning insulating sheath material of the novel reversible thermosensitive ABB fuse.
FIG. 3 is an external structure diagram of the early warning insulating sheath material of the novel reversible thermosensitive ABB fuse.
Fig. 4 is a structural diagram of a forming die for the early warning insulating sheath material of the novel reversible thermosensitive ABB fuse.
Reference numbers in the figures: 1. a blow molding machine; 2. an extruder; 3. a heating box; 4. feeding a hopper; 5. forming a mold; 6. a detection mechanism; 7. a control panel; 8. a blowing mechanism; 9. a discharge port; 10. an insulating sheath; 11. a front sheath; 12. a rear sheath; 13. a heat dissipation plate; 14. a heat-sensitive color-changing column; 15. a heat sink; 16. a fuse; 17. a binding post; 18. a mold cavity; 19. the heat dissipation plate is formed with a partition plate; 20. and forming holes of the thermosensitive color-changing columns.
Detailed Description
In order to make the technical means, the original characteristics, the achieved objects and the functions of the present invention easy to understand, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or the positional relationship based on the orientation or the positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, wherein certain elements may be omitted, enlarged or reduced in size, and are not intended to represent the actual dimensions of the product, so as to better illustrate the detailed description of the invention.
Example 1
As shown in fig. 1-4, a novel reversible thermosensitive ABB fuse early warning insulating sheath material, including insulating sheath 10, the inside fuse 16 that is provided with of insulating sheath 10, fuse 16 passes through terminal 17 fixed connection insulating sheath 10, insulating sheath 10 comprises preceding sheath 11, back sheath 12, even fixedly connected with a plurality of heating panel 13 on the preceding sheath 11 leading flank, be provided with a plurality of heat-sensitive discoloration post 14 between the heating panel 13, radiating groove 15 has all been seted up to preceding sheath 11, back sheath 12 side, insulating sheath 10 is formed through blowing machine 1 processing by insulating sheath material.
The fuse 15 is an ABB fuse, when the fuse 15 is fused in an overload manner due to overlarge current, violent heat release or even spark generation can be carried out in the fuse 15, and if heat generated in a short time cannot be dissipated in time, explosion or fire can be easily caused, the invention can effectively prevent the external environment from directly contacting with the fuse by sleeving the insulating protective sleeve 10 on the outer part of the fuse, not only can prevent the fuse from being fused due to external factors, but also can improve the external environment contact change temperature of the fuse by the heat insulation effect of the protective sleeve and improve the tolerance of the fuse to the external environment, the heat dissipation plates 13 are arranged on the front protective sleeve 11, the shape of the heat dissipation plates 13 is triangular pyramid, the front protective sleeve protrudes outwards from the surface of the front protective sleeve 11, and the heat exchange efficiency of the fuse with the external environment in the use process can be effectively improved, thereby improve the radiating efficiency, the radiating effect of fuse in the use can further be improved to the radiating groove 15 that sets up on utilizing preceding sheath 11, back sheath 12, and the heat exchange is carried out with the external world in bigger area, and the timely quick heat dissipation that produces in the fuse fusing process goes out, reduces the risk of explosion or conflagration.
In this embodiment, the blow molding machine 1 is composed of an extruder 2, a heating box 3, a feeding hopper 4, a forming mold 5, a detection mechanism 6, a blowing mechanism 8 and a discharge port 9, wherein the feeding hopper 4 is arranged at the top of the heating box 3, the detection mechanism 6 is provided with a control panel 7, the blowing mechanism 8 is arranged at one side of the detection mechanism 6, and the extruder 2 is connected with the forming mold 5 through a die head.
The raw materials gets into heating cabinet 3 by feeding funnel 4, flows into extruder 2 after the heating of heating cabinet 3 and carries out moulding extrusion, and extruder 2 transports the raw materials after moulding to forming die 5 inside through the die head, cools off moulding in forming die 5 department, accomplishes the back when processing and detects through detection mechanism 6, if detect qualified, then discharge through discharge gate 9.
The difference between the blow molding machine 1 of the invention and the blow molding machine with the common structure is that the blow molding machine 1 is also provided with a detection mechanism 6, the detection mechanism 6 is composed of a detection chamber, a CCD camera and a transportation conveyor belt, after the insulating sheath 10 is subjected to blow molding by the blow molding machine 1, the insulating sheath 10 is transported to the detection chamber of the detection mechanism 6 through the transportation conveyor belt, a heating device and the CCD camera are arranged in the detection chamber, the color change of the insulating sheath 10 in the temperature rising process can be photographed and recorded, and when the thermosensitive color changing column 14 on the insulating sheath 10 is determined to be the same as the preset condition, the insulating sheath material is judged to be qualified in production and is discharged through a discharge port 9.
In the present embodiment, the molding die 5 is composed of a die cavity 18, a heat dissipation plate molding partition plate 19, and a thermosensitive color-changing pillar molding hole 20, and a sealing pillar for sealing is provided in the thermosensitive color-changing pillar molding hole 20.
A plurality of heat dissipation plate forming partition plates 19 are uniformly arranged on the forming die 5, when the melted jacking flows into a space formed between the heat dissipation plate forming partition plates 19 and the die cavity 18, the jacking is finally solidified into a heat dissipation plate 13, at the beginning, the thermosensitive discoloration column forming holes 20 are sealed by sealing columns, when the heat dissipation plate 13 is basically solidified and formed, the sealing columns are taken down, and the thermosensitive discoloration column material of the reversible thermosensitive discoloration fuse is poured to realize solidification and forming of the thermosensitive discoloration column 14 and fixed connection with the insulating sheath 10.
In this embodiment, the detection mechanism 6 is composed of a detection chamber, a CCD camera, and a transport conveyor belt, a heating device is disposed inside the detection mechanism 6, the insulation sheath 10 is subjected to high temperature detection by the detection mechanism 6 after being blow molded, and is discharged through the discharge port 9 after passing the detection.
After the thermosensitive color-changing column 14 is solidified and formed and is fixedly connected with the insulating sheath 10, the insulating sheath 10 is conveyed to the interior of a detection chamber of the detection mechanism 6 through a conveying conveyor belt, a heating device is arranged in the detection chamber, and a CCD camera is arranged at the same time, so that the color change of the insulating sheath 10 in the temperature rising process can be photographed and recorded, when the thermosensitive color-changing column 14 on the insulating sheath 10 is determined to be the same as the preset condition, the qualified production of the insulating sheath material is judged, meanwhile, an observation window is arranged on the detection mechanism 6, so that whether the thermosensitive color-changing column 14 changes color or not can be directly observed, and whether the finally formed insulating sheath is qualified or not is.
In this embodiment, the thermochromic column 14 comprises the following raw materials in parts by weight: 5-15 parts of epoxy resin, 5-10 parts of cobalt chloride hexahydrate, 1-3 parts of hexamethylenetetramine, 2-5 parts of sodium dodecyl benzene sulfonate, 3-7 parts of diphenylmethane diisocyanate, 2-5 parts of a dispersing agent, 1-5 parts of a gas phase corrosion inhibitor and 10-15 parts of nano calcium carbonate.
The preparation method of the thermosensitive color-changing column material of the reversible thermosensitive color-changing fuse is characterized by comprising the following steps:
(1) weighing the raw materials according to the components;
(2) putting weighed cobalt chloride hexahydrate and hexamethylenetetramine into a reaction kettle, adding water to dissolve, stirring and mixing uniformly, standing for 2-5 hours, adding sodium dodecyl benzene sulfonate, stirring uniformly, dropwise adding diphenylmethane diisocyanate into the reaction kettle, heating to 60-80 ℃, and keeping constant temperature for reaction for 2-4 hours to obtain a base material A;
(3) adding epoxy resin, a dispersing agent and a vapor phase corrosion inhibitor into ethanol, performing ultrasonic dispersion for 15-30 minutes, adding nano calcium carbonate, and continuing ultrasonic dispersion for 15-30 minutes to obtain a base material B;
(4) and mixing and uniformly stirring the base material A and the base material B, putting the mixture into a 120-plus 160 ℃ oven for drying for 10-18h, then putting the mixture into a ball mill for ball milling, and vulcanizing the mixture to obtain the reversible thermosensitive color-changing fuse thermosensitive color-changing column material.
A preparation method of a novel reversible thermosensitive ABB fuse early warning insulating sheath material comprises the following steps:
firstly, weighing a certain amount of butyl rubber and toluene, adding the butyl rubber and the toluene into a reaction kettle, heating to 80-90 ℃, and stirring for dissolving;
secondly, continuously introducing nitrogen into the reaction kettle for 30min, then adding stearic acid monoglyceride and benzoyl peroxide into the reaction kettle, stirring and mixing for 3-5min, then adding a thermotropic modifier into the mixture, stirring and reacting for 40-50min, then heating to 120-130 ℃, carrying out reflux reaction for 5-6h, and then evaporating the obtained product to remove the solvent in the product, thus obtaining the thermochromic butyl rubber;
thirdly, simultaneously adding the thermochromic butyl rubber, the diglycol, the zinc oxide and the paraffin oil into a plasticator for mixing for 2-3min, then adding the white carbon black into the plasticator for mixing for 2-3min, and then adding the obtained product into a blow molding machine 1 through a charging hopper 4 for extrusion molding to obtain a semi-finished product of the insulating protective sleeve;
and fourthly, mixing the thermosensitive color-changing column material and ethanol according to the mass ratio of 1: 0.2-0.5, injecting the mixture into a mould, heating and connecting the thermosensitive color-changing column material and the semi-finished product of the insulating protective sleeve in the third step through a mould cavity 18 through a thermosensitive color-changing column forming hole 20, and cooling and forming to form the insulating protective sleeve 10.
Example 2
As shown in fig. 1-4, a novel reversible thermosensitive ABB fuse early warning insulating sheath material, including insulating sheath 10, the inside fuse 16 that is provided with of insulating sheath 10, fuse 16 passes through terminal 17 fixed connection insulating sheath 10, insulating sheath 10 comprises preceding sheath 11, back sheath 12, even fixedly connected with a plurality of heating panel 13 on the preceding sheath 11 leading flank, be provided with a plurality of heat-sensitive discoloration post 14 between the heating panel 13, radiating groove 15 has all been seted up to preceding sheath 11, back sheath 12 side, insulating sheath 10 is formed through blowing machine 1 processing by insulating sheath material.
In the present embodiment, the molding die 5 is composed of a die cavity 18, a heat dissipation plate molding partition plate 19, and a thermosensitive color-changing pillar molding hole 20, and a sealing pillar for sealing is provided in the thermosensitive color-changing pillar molding hole 20.
In order to further improve the heat dissipation effect of the novel reversible thermosensitive ABB fuse early warning insulating sheath material, the left side surface and the right side surface of the heat dissipation plate forming partition plate 19 are provided with wave-shaped curved surfaces, so that during forming, the surface of the heat dissipation plate 13 can form the wave-shaped curved surfaces, the heat dissipation plate has a larger heat exchange area compared with a triangular pyramid-shaped planar structure, and meanwhile, the inner wall of the heat dissipation groove 15 can also be provided with the wave-shaped curved surfaces, so that the larger heat exchange area is obtained, heat generated by the fuse 15 in the using process is dissipated out in time, and the risk of explosion or fire is reduced.
In order to further reduce the cost of the invention, the processing of the column material of the thermosensitive color-changing column and the processing of the insulating sheath material can be carried out at the same time, and finally the thermosensitive color-changing column 13 and the front sheath 11 are combined and connected, for example, the molding hole 20 of the thermosensitive color-changing column is replaced by a convex groove which is provided with internal threads and protrudes outwards, so that the insulating sheath can be directly processed into a semi-finished product with external threads by using the molding die 5, only a threaded hole matched with the external threads needs to be processed on the original structure when the thermosensitive color-changing column 13 is processed, and the replacement and maintenance can be carried out when a fault or overheating damage occurs.
Compared with the prior art, the invention is improved in that:
1. a novel reversible thermosensitive ABB fuse early warning insulating sheath material and a preparation method thereof are provided, a plurality of heat dissipation plates 13 are arranged on a front sheath 11, the heat dissipation plates 13 are triangular pyramid-shaped and protrude outwards from the surface of the front sheath 11, so that the heat exchange efficiency of a fuse with the outside in the use process can be effectively improved, the heat dissipation efficiency is improved, the heat dissipation effect of the fuse in the use process can be further improved by utilizing heat dissipation grooves 15 arranged on the front sheath 11 and a rear sheath 12, heat exchange with the outside is carried out in a larger area, a plurality of thermosensitive color-changing columns 14 are fixedly connected on the front sheath 11, the thermosensitive color-changing columns 14 can play a thermal early warning function by increasing the thermosensitive color-changing function, an inspector can be effectively reminded through the color change of the thermosensitive color-changing columns 14 on the sheath, faults can be found in time, measures can be taken in time to quickly eliminate hidden dangers, a layer of insulating protective sheath, the fuse protector can effectively prevent the external environment from directly contacting with the fuse, not only can prevent the fuse from fusing due to external factors, but also can improve the external environment contact change temperature of the fuse through the heat insulation effect of the protective sleeve and improve the tolerance performance of the fuse protector to the external environment;
2. the method is divided into two parts in the processing of the insulating sheath material, one part is the processing of the column material of the thermosensitive color-changing column, the other part is the processing of the insulating sheath material, in the processing process of the column material of the thermosensitive color-changing column, the thermosensitive color-changing column obtained by the processing method can timely react to the external temperature environment to realize the color change, so that the insulating sheath can realize the color change when the temperature rises to 57 ℃, further effectively realize warning, prevent the fuse from fault fusing caused by higher external environment temperature, and facilitate the replacement of a new fuse, the insulating sheath material prepared by the method disclosed by the invention has better flame retardant effect, the insulating effect and the color reversible effect of the protecting sheath material can be improved by adding the methyl vinyl silicone rubber while ball milling, when the insulating protecting sheath material is subjected to higher temperature, the color can change, the reaction with the heat-sensitive color-changing column is compared, so that the patrol personnel can be reminded of having faults in time, and the overhaul is convenient.
3. In the process of processing the thermosensitive color-changing column 14, the thermosensitive color-changing column material and ethanol are mixed and injected into a mold according to the mass ratio of 1: 0.2-0.5, the thermosensitive color-changing column material and a semi-finished product of an insulating protective sleeve are heated and connected through a mold cavity 18 through a thermosensitive color-changing column forming hole 20, an insulating protective sleeve is formed after cooling and forming, the thermosensitive color-changing column 14 and the insulating protective sleeve are fixedly connected into a whole under the heating state, high-temperature detection is carried out through a detection mechanism 6 after the insulating protective sleeve 10 is blow-molded, a heating device is arranged inside the detection mechanism 6, the temperature inside the detection mechanism 6 can be raised to a rated test temperature, whether the thermosensitive color-changing column 14 changes through an observation window arranged on the detection mechanism 6, whether the finally-molded insulating protective sleeve is qualified or not is judged, and qualified products are discharged through a discharge hole 9.
While there have been shown and described what are at present considered the preferred embodiments of the invention, the fundamental principles and essential features of the invention and advantages thereof, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are included to illustrate the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (7)
1. The utility model provides a novel reversible temperature sensing ABB fuse early warning insulating sheath material, includes insulating sheath (10), its characterized in that: insulating sheath (10) inside is provided with fuse (16), fuse (16) are through terminal (17) fixed connection insulating sheath (10), insulating sheath (10) comprise preceding sheath (11), after-sheath (12), even fixedly connected with a plurality of heating panel (13) on preceding sheath (11) leading flank, be provided with a plurality of heat-sensitive discoloration post (14) between heating panel (13), radiating groove (15) have all been seted up to preceding sheath (11), after-sheath (12) side, insulating sheath (10) are formed through blowing machine (1) processing by insulating sheath material.
2. The novel reversible thermosensitive ABB fuse early warning insulating sheath material as claimed in claim 1, wherein: the blow molding machine (1) is composed of an extruder (2), a heating box (3), a feeding hopper (4), a forming mold (5), a detection mechanism (6), a blowing mechanism (8) and a discharge port (9), wherein the feeding hopper (4) is arranged at the top of the heating box (3), the detection mechanism (6) is provided with a control panel (7), the blowing mechanism (8) is arranged on one side of the detection mechanism (6), and the extruder (2) is connected with the forming mold (5) through a die head.
3. The novel reversible thermosensitive ABB fuse early warning insulating sheath material as claimed in claim 2, wherein: the forming die (5) is composed of a die cavity (18), a heat dissipation plate forming partition plate (19) and a thermosensitive color-changing column forming hole (20), and a sealing column for sealing is arranged on the thermosensitive color-changing column forming hole (20).
4. The novel reversible thermosensitive ABB fuse early warning insulating sheath material as claimed in claim 2, wherein: detection mechanism (6) comprise detection room, CCD camera, transportation conveyer belt, detection mechanism (6) inside is provided with heating device, insulating sheath (10) blow molding back carries out high temperature detection through detection mechanism (6), discharges through discharge gate (9) after detecting qualified.
5. The novel reversible thermosensitive ABB fuse early warning insulating sheath material as claimed in claim 1, wherein: the thermosensitive color-changing column (14) comprises the following raw materials in parts by weight: 5-15 parts of epoxy resin, 5-10 parts of cobalt chloride hexahydrate, 1-3 parts of hexamethylenetetramine, 2-5 parts of sodium dodecyl benzene sulfonate, 3-7 parts of diphenylmethane diisocyanate, 2-5 parts of a dispersing agent, 1-5 parts of a gas phase corrosion inhibitor and 10-15 parts of nano calcium carbonate.
6. The preparation method of the thermosensitive color-changing column material of the reversible thermosensitive color-changing fuse is characterized by comprising the following steps:
(1) weighing the raw materials of the early warning insulating protective sleeve of the reversible thermosensitive color-changing fuse according to the material of the early warning insulating protective sleeve of the reversible thermosensitive color-changing fuse in claim 5;
(2) putting weighed cobalt chloride hexahydrate and hexamethylenetetramine into a reaction kettle, adding water to dissolve, stirring and mixing uniformly, standing for 2-5 hours, adding sodium dodecyl benzene sulfonate, stirring uniformly, dropwise adding diphenylmethane diisocyanate into the reaction kettle, heating to 60-80 ℃, and keeping constant temperature for reaction for 2-4 hours to obtain a base material A;
(3) adding epoxy resin, a dispersing agent and a vapor phase corrosion inhibitor into ethanol, performing ultrasonic dispersion for 15-30 minutes, adding nano calcium carbonate, and continuing ultrasonic dispersion for 15-30 minutes to obtain a base material B;
(4) and mixing and uniformly stirring the base material A and the base material B, putting the mixture into a 120-plus 160 ℃ oven for drying for 10-18h, then putting the mixture into a ball mill for ball milling, and vulcanizing the mixture to obtain the reversible thermosensitive color-changing fuse thermosensitive color-changing column material.
7. The preparation method of the novel reversible thermosensitive ABB fuse early warning insulating sheath material as claimed in claim 1, is characterized in that: the method comprises the following steps:
firstly, weighing a certain amount of butyl rubber and toluene, adding the butyl rubber and the toluene into a reaction kettle, heating to 80-90 ℃, and stirring for dissolving;
secondly, continuously introducing nitrogen into the reaction kettle for 30min, then adding stearic acid monoglyceride and benzoyl peroxide into the reaction kettle, stirring and mixing for 3-5min, then adding a thermotropic modifier into the mixture, stirring and reacting for 40-50min, then heating to 120-130 ℃, carrying out reflux reaction for 5-6h, and then evaporating the obtained product to remove the solvent in the product, thus obtaining the thermochromic butyl rubber;
thirdly, simultaneously adding the thermochromic butyl rubber, the diglycol, the zinc oxide and the paraffin oil into a plasticator for mixing for 2-3min, then adding the white carbon black into the plasticator for mixing for 2-3min, and then adding the obtained product into a blow molding machine (1) through a charging hopper (4) for extrusion molding to obtain a semi-finished product of the insulating protective sleeve;
and fourthly, mixing the thermosensitive color-changing column material and ethanol according to the mass ratio of 1: 0.2-0.5, injecting the mixture into a mould, heating and connecting the thermosensitive color-changing column material and the semi-finished product of the insulating protective sleeve in the third step through a mould cavity (18) through a thermosensitive color-changing column forming hole (20), and cooling and forming to form the insulating protective sleeve (10).
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| CN202011288250.1A CN112289662A (en) | 2020-11-17 | 2020-11-17 | Novel reversible thermosensitive ABB fuse early warning insulating sheath material and preparation method thereof |
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| CN202011288250.1A CN112289662A (en) | 2020-11-17 | 2020-11-17 | Novel reversible thermosensitive ABB fuse early warning insulating sheath material and preparation method thereof |
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