CN110289144B - Method for improving insulating property of chip resistor unit - Google Patents
Method for improving insulating property of chip resistor unit Download PDFInfo
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- CN110289144B CN110289144B CN201910522175.1A CN201910522175A CN110289144B CN 110289144 B CN110289144 B CN 110289144B CN 201910522175 A CN201910522175 A CN 201910522175A CN 110289144 B CN110289144 B CN 110289144B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/10—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element having zig-zag or sinusoidal configuration
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/10—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element having zig-zag or sinusoidal configuration
- H01C3/12—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element having zig-zag or sinusoidal configuration lying in one plane
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Abstract
A method for improving the insulating performance of chip resistor units includes arranging resistor bands or resistor chips together, isolating adjacent resistor bands or resistor chips by insulating materials, isolating adjacent resistor bands or resistor chips by using integral insulating tubes, and isolating, insulating and positioning adjacent resistor bands or resistor chips by using the integral insulating tubes. And (3) opening clamping grooves on the whole insulating pipe, clamping all the resistance bands or resistance discs into the clamping grooves of the whole insulating pipe, and forming isolation insulation and positioning between the resistance bands or the resistance discs through the clamping grooves. The resistance band or the resistance card is clamped by the whole insulating tube, so that the resistance band or the resistance card can be effectively positioned, the insulation isolation between the resistance band or the resistance card can be effectively realized, the creepage distance of the resistance band or the resistance card is greatly increased, the insulation performance is not influenced due to the problems of moisture and the like, and the insulation performance of the resistance unit is improved.
Description
Technical Field
The invention relates to a structure of a resistor and an insulation method thereof, in particular to a method for improving the insulation performance between resistance bands or resistance sheets of a chip resistor, which can improve the insulation performance between the resistance bands or resistance sheets in a resistor unit and increase the creepage distance and the withstand voltage value of the resistance bands or resistance sheets; belonging to the technical field of chip resistor manufacture.
Background
The chip resistor is a resistor widely used in the present electric locomotive, for example, in order to enable a motor car or a high-speed rail running at a high speed to brake at a proper speed, the electric energy generated by converting kinetic energy and potential energy into heat energy through the brake resistor is required to be quickly converted into heat energy and dissipated into air, so that the vehicle is quickly and reliably decelerated, and the brake resistor used in the high-speed rail is the chip resistor. The existing brake sheet type resistor is generally formed by arranging resistors one by one in parallel to form a resistor bank, and then clamping the resistor bank by a supporting member to form a resistor unit, and an insulating spacer is required to be used between each resistor belt or each resistor sheet to insulate and separate the resistor element from the supporting member. The existing isolation mode is that one resistance band or one resistance sheet and one porcelain insulator are used for isolating the resistance bands or the resistance sheets by one porcelain insulator, and the isolation mode is still available for installing the brake resistor at the bottom of a vehicle body in the past, but the brake resistor is already installed at the top of the vehicle body in many high-speed rails or motor cars at present, so that the brake resistor is completely exposed in the sun and rain environment; in the independent isolation mode of one resistor band or one resistor disc and one ceramic insulator, gaps exist between the ceramic insulator and the ceramic insulator, and the gaps are easily soaked in rainwater, so that the creepage distance from the resistor band or the resistor disc to a clamping screw rod connected through the resistor band or the resistor disc is too short through rainwater soaking, the insulating property of the whole resistor in a rain environment is influenced, and the high-voltage requirement in the rain environment cannot be met, so that the improvement is needed.
Patent documents in which the same technology as that of the present invention is not found through patent search are reported, and the following patents which have a certain relationship with the present invention are mainly included:
1. the patent number is CN0081696, the name is "resistor bank", the applicant is: patent of the invention by kresall limited, which discloses a resistor bank having first and second support members, a resistor element made of a strip of resistor material bent in a zigzag, and holding means consisting of a plurality of clips, each for holding the resistor element at a bend of the resistor element to a respective support member, characterized in that each clip has at least one fastening lug for insertion into at least one fastening hole of a corresponding bend of the resistor element.
2. Patent No. CN201621167383.2 entitled "a belt grounding resistor", filed by applicant: the utility model discloses a Guangdong ford electronics limited company's utility model patent, this patent disclose a belt earthing resistor, arrange the unit including resistance, resistance row unit includes the resistance area, insulating part, boom and a plurality of support, a plurality of supports all are connected with the boom and arrange along the length direction of boom, keep apart and fix through the insulating part between two adjacent supports, the resistance area is integrated into one piece and continuous bending structure, a plurality of bends and a plurality of supports of resistance area are arranged correspondingly, each bend of resistance area respectively with the support welded fastening that corresponds.
3. The patent number is CN201720020841.8, entitled "a modular resistor for grounding resistance cabinet", applicant is: the utility model discloses a wuhan's marine electric propulsion means institute (the seventh two institute of china ship reworking group company), this patent discloses a modular resistor for ground resistance cabinet, including two curb plates that the symmetry set up and set up the many boom between two curb plates, the boom on the cover be equipped with the mica pipe, the mica pipe on the cover be equipped with multiunit resistor module, the resistor module include a plurality of resistance bands or resistance card and porcelain that the interval set up, the positive and negative two-sided symmetry of resistance band or resistance card be provided with many hard golden mica strips, hard golden mica strip and resistance band or resistance card between be provided with soft golden mica strip, curb plate and resistor module between and between two adjacent resistor modules all be provided with the insulator that the cover was established on the mica pipe.
Through careful analysis of the above patents, although the patents relate to the structure of the chip resistor, some improved technical solutions are proposed, but through careful analysis, the improvements do not relate to a way of isolating and insulating a chip of the resistor strip or the resistor chip by using a plurality of porcelain pieces or insulating pieces, so that the insulation is achieved, and therefore, the patents do not solve the problem that the creepage distance between the resistor strips or the resistor chips of the sub-prisons and the fasteners penetrating through the porcelain pieces is shortened due to rainwater infiltration between the porcelain pieces or the insulating pieces, the insulation performance of the resistor unit in a rain environment is affected, and the high-voltage requirement in the rain environment cannot be met, so that further research and improvement are needed.
Disclosure of Invention
The invention aims to provide a novel insulation mode isolated by a resistance band or a resistance card, aiming at solving the problems that the creepage distance is shortened in a rain environment due to the fact that a single ceramic piece is adopted for insulation isolation between a ceramic piece and the resistance band or the resistance card in the conventional chip resistor, the insulation performance of a resistance unit in the rain environment is influenced, and the high-voltage requirement in the rain environment cannot be met.
In order to achieve the purpose, the invention provides a method for improving the insulating property of a chip resistor unit, which comprises the steps of arranging resistor bands or resistor chips together in a combined mode, isolating adjacent resistor bands or resistor chips through insulating materials, isolating adjacent resistor bands or resistor chips through an integral insulating tube, and isolating, insulating and positioning adjacent resistor bands or resistor chips through the integral insulating tube.
Furthermore, the whole insulating tube is provided with clamping grooves, all the resistance bands or resistance discs are clamped into the clamping grooves of the whole insulating tube, and the resistor bands or the resistance discs are isolated, insulated and positioned through the clamping grooves.
Furthermore, the whole insulating tube is provided with the clamping grooves, the whole insulating tube is made of a ceramic material for isolating the resistance bands or the resistance cards into a strip shape, and the clamping grooves are formed in the outer surface of the whole insulating tube according to the spacing distance of the resistance bands or the resistance cards so as to ensure that the resistance bands or the resistance cards can be completely clamped in the corresponding insulating tube clamping grooves after being combined.
Furthermore, the whole insulating tube is in a round, oval, rhombic, any polygonal or multi-tooth structure, and a clamping groove is formed in the round, oval, rhombic, any polygonal or multi-tooth appearance.
Furthermore, the clamping groove of the insulating tube with the oval or diamond structure is arranged on the opposite angle of the long axis direction, and two sides of the insulating tube are provided with grooves; the depth of the clamping groove is based on the length of the reserved porcelain material and the distance of the reserved porcelain material is not less than the length of the short shaft, and the bottom diameter of the clamping groove is smaller than the size of the short shaft.
Furthermore, the step of clamping all the resistance tapes or resistance cards into the clamping grooves of the whole insulating tube is to form oval or diamond-shaped holes at the upper end and the lower end of each resistance tape or resistance card, the whole insulating tube is also made into an oval or diamond shape matched with the resistance tapes or resistance cards, and the clamping grooves are respectively formed inwards at the opposite angles of the long axis on the outer surface of the oval or diamond-shaped insulating tube; respectively penetrating the whole elliptic or rhombic insulating tube through the elliptic or rhombic holes at the upper end and the lower end of the resistance strip or the resistance sheet; after the resistance band or the resistance card passes through the resistance band or the resistance card, when the resistance band or the resistance card reaches a required position, the clamping grooves on the elliptic or rhombic insulating tube are completely corresponding to the elliptic or rhombic holes matched with the resistance band or the resistance card, then the elliptic or rhombic insulating tube is rotated, the clamping grooves on the elliptic or rhombic insulating tube are clamped on the resistance band or the resistance card to form clamping buckles of the resistance band or the resistance card, the resistance band or the resistance card is fixed, porcelain insulation among the resistance bands or the resistance card is also formed, and then the whole insulating tube is fixed to form a resistance band or a resistance card unit.
Further, in order to ensure that the whole elliptic or rhombic insulating tube can pass through the elliptic or rhombic holes matched with the resistance bands or the resistance sheets, the direction of the long and short axes of the ellipse of the elliptic or rhombic insulating tube is consistent with the direction of the long and short axes of the elliptic or rhombic holes matched with the resistance bands or the resistance sheets when the elliptic or rhombic insulating tube passes through the hole; and after the elliptic or rhombic insulating tube passes through the matched elliptic or rhombic hole of the resistance band or the resistance card in place, the elliptic or rhombic insulating tube is rotated by 90 degrees, so that the clamping groove of the elliptic or rhombic insulating tube is inserted into the short-axis side of the elliptic or rhombic hole of the resistance band or the resistance card to form a clamping structure.
Furthermore, the whole insulating tube is fixed by arranging a fixing device at the end part of the whole insulating tube, and the whole insulating tube is connected and fixed with other parts of the whole resistor unit through the fixing device to form stable connection.
Furthermore, the step of clamping all the resistance bands or resistance discs into the clamping grooves of the whole insulating tube is to form semicircular openings at the upper and lower ends of the resistance bands or resistance discs, the whole insulating tube is also made into a round shape or a multi-tooth shape, the clamping grooves are formed in the outer surface of the round shape or the multi-tooth shape insulating tube, and each clamping groove corresponds to one resistance band or resistance disc; continuously arranging the resistance bands or the resistance cards, clamping the whole insulating tube into the semicircular openings at the upper end and the lower end of the resistance bands or the resistance cards by using each clamping groove corresponding to one resistance band or resistance card from the semicircular openings at the upper end and the lower end of the resistance bands or the resistance cards, fixing ports of the resistance bands or the resistance cards, and isolating and insulating the resistance bands or the resistance cards through the whole insulating tube; and after the whole insulating tube is clamped into the electric resistance band or the resistance sheet assembly, the whole insulating tube is fixed to form a resistance band or a resistance sheet unit.
Furthermore, the whole insulating tube is clamped into the electric resistance band or the resistor disc assembly and then fixed, namely the support piece is inserted into the central hole of the whole insulating tube, the whole insulating tube with the support piece inserted into the electric resistance band or the semicircular opening at the upper end and the lower end of the resistor disc is clamped into the semicircular opening at the lower end of the resistor disc from the upper end and the lower end of the resistor band or the resistor disc, so that each port of the resistor disc is clamped into the clamping groove of the whole insulating tube, and then the whole insulating tube and the support piece are relatively fixed together to form a complete resistor unit.
The invention has the advantages that:
the invention changes the existing mode of isolating and insulating the resistance band or the resistance card by using the porcelain or the insulator respectively into the mode of insulating and isolating the resistance band or the resistance card by using the whole insulating tube, thereby not only simplifying the isolation mode, but also improving the overall insulating property of the resistance unit, effectively solving the problem that the creepage distance is easy to shorten in the rain environment due to the isolation and insulation between the resistance band or the resistance card, effectively improving the insulating property of the resistance unit in the rain environment, and meeting the high-voltage resistant requirement of the resistance unit in the rain environment.
Drawings
FIG. 1 is a schematic view of an explosion structure for installing a conventional resistor unit;
FIG. 2 is a schematic diagram of a resistor unit according to an embodiment of the present invention;
FIG. 3 is a schematic view of an assembly of a whole insulating tube according to the present invention;
FIG. 4 is an enlarged view of the end of the entire insulating tube of FIG. 2;
FIG. 5 is a schematic view of FIG. 4 taken in the direction of K;
FIG. 6 is a schematic diagram of an assembled resistor unit according to another embodiment of the invention;
FIG. 7 is a K-direction schematic view of FIG. 6;
FIG. 8 is a perspective view of the entire insulator structure of the present invention;
fig. 9 is a schematic view of several cross-sectional shapes of the entire insulating tube of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and specific examples.
Comparative example
As shown in fig. 1, in the conventional chip or strip resistor unit, resistor strips or resistor discs 101 are arranged in parallel from top to bottom; mounting holes (shown in the figure) for mounting porcelain pieces are formed at the upper end and the lower end of the resistance band or the resistance sheet 101, and non-adjacent parts of the upper end and the lower end of the resistance band or the resistance sheet 101 are separated by the porcelain pieces 102 to form an insulating state; the ceramic member 102 is connected to the support rod 103 through the support rod mounting hole in the center of the ceramic member to form a whole, and the upper and lower support rods 103 and the resistance band or chip 101 are integrally formed into a frame-type resistance unit.
Example one
As can be seen from the attached figures 2-5, the invention relates to a resistance unit with a resistance belt combined structure, which comprises a support rod 3, a resistance belt 1 and a whole insulating pipe 2, wherein the support rod 3, the resistance belt 1 and the whole insulating pipe 2 are combined to form the resistance unit, and the two ends 4 of the resistance belt 1 which are roundabout up and down are isolated and positioned through the whole insulating pipe.
The support rods 3 are cylindrical metal rods commonly called tie rods, and the number of the support rods 3 is two, namely a first support rod piece 5 and a second support rod piece 6; the first support rod piece 5 and the second support rod piece 6 are respectively positioned at the two ends 4 of the resistance band 1 which are vertically circuitous and penetrate through a central hole 7 on the whole insulating tube 2, two ends of the whole insulating tube 2 extend out of the whole insulating tube 2, the two extended ends are fixedly positioned by a fastener 8 and combined with the resistance band 1 to form a frame structure, and conductors 12 connected with the outside are arranged at the head end and the tail end of the resistance band 1 of the frame; the first support bar 5 and the second support bar 6 are fixed in parallel and separately in a frame (not shown in the figures) to which are fixed further resistance units (not shown in the figures) which together constitute a resistor system.
The resistance band 1 is a resistance element which is arranged between the first support rod 5 and the second support rod 6 and is combined in a continuous mode, namely the resistance band 1 is formed by combining a belt-shaped, sheet-shaped or strip-shaped resistance alloy without joints back and forth up and down, and the belt-shaped, sheet-shaped or strip-shaped resistance alloy is connected in series between the first support rod 5 and the second support rod 6 back and forth to form the resistance element. Mounting holes 9 for the whole insulating tube 2 to pass through are respectively formed at the upper end 4 and the lower end 4 of the resistor belt in a roundabout mode, and the mounting holes 9 are in an oval shape so as to ensure that the whole insulating tube 2 can pass through the mounting holes 9 of the resistor belt 1.
Further, the mounting holes 9 are elliptical, and the major axis directions of the ellipses of the upper and lower mounting holes 9 are identical, and the connecting direction of the mounting holes 9 at the upper and lower ends of the resistive strip 1 and the two mounting holes may be identical, or the major axes of the mounting holes 9 at the upper and lower ends of the resistive strip 1 may be parallel to each other.
The whole insulating tube 2 is an elliptical hollow tube, is matched with the elliptical shape of the mounting holes 9 at the upper end and the lower end of the resistance band 1, and is smaller than the mounting holes 9 at the upper end and the lower end of the resistance band 1 so as to ensure that the whole insulating tube can penetrate through the mounting holes 9 at the upper end and the lower end of the resistance band; clamping grooves 10 are formed in the outer surface of the whole insulating tube 2 according to the distance between the upper end and the lower end of the resistance band and used for clamping the two ends of the resistance band 1, fixing the resistance band 1 and forming insulation isolation between the two ends of the resistance band 1; the clamping grooves 10 are arranged at two ends of the oval whole insulating tube in the major axis direction, and the depth of each clamping groove 10 is set to ensure that the diameter of the bottom of each clamping groove is smaller than that of the oval minor axis of the whole insulating tube; a central hole 7 for penetrating a support rod is formed in the center of the section of the whole insulating tube 2, and the central hole 7 is a through hole; the first support rod piece 5 and the second support rod piece 6 respectively penetrate through the central holes 7 of the upper and lower whole insulating pipes; the two ends of the whole insulating tube 2 are respectively provided with a groove or a boss 11 for fixing the whole insulating tube 2, and after the whole insulating tube passes through the mounting holes 9 at the upper end and the lower end of the resistance band, the whole insulating tube 2 is fixedly connected with the resistance band 1 or the support rod 3 through the groove or the boss 11 by an insulating tube fastener 13, so that the whole insulating tube 2 is positioned.
The whole insulating tube 2 is made of ceramic material or polymer composite insulating material, so as to ensure the high-temperature insulating property of the resistor unit as a standard.
The embodiment is characterized in that: the isolation and the positioning of the two ends of the resistance band are carried out by the whole insulating tube; firstly, an oval whole insulating tube with a clamping groove penetrates through a mounting hole in a resistance band according to the direction of an oval mounting hole in the resistance band; after the whole insulating tube passes through the oval mounting hole on the resistance band to reach the position, the whole insulating tube is rotated, so that the resistance band is clamped into the clamping groove on the oval shape of the whole insulating tube to form positioning and isolation; after the whole insulating tube rotates to the position, the whole insulating tube is locked and fixed by the fastener through the grooves or the convex blocks at the two ends of the whole insulating tube, and the whole insulating tube is prevented from rotating again.
Example two
The principle of the second embodiment is the same as that of the first embodiment, except that the structure is slightly different, as shown in fig. 6-7, the resistance unit of the resistance strip combined structure comprises a support rod 203, a resistance strip 201, an entire insulating tube 202 and a conductor 213, and the support rod 203, the resistance strip 201 and the entire insulating tube 202 are combined to form the resistance unit; the isolation and positioning of the two ends of the resistive strip 202 is performed by the entire insulating tube 202.
The two support rods 203 are respectively a first support rod piece and a second support rod piece; the first support rod piece and the second support rod piece are respectively positioned at two ends of the resistance band 201 and penetrate through the central hole on the whole insulating tube 202, two ends of the first support rod piece and the second support rod piece extend out of the whole insulating tube 202, the two extended ends are fixedly positioned by a fastening piece 208, and the first support rod piece and the second support rod piece and the resistance band 201 form a frame structure; the first support bar and the second support bar are fixed in parallel and separately in a frame (not shown in the figures) to which are fixed further resistance units (not shown in the figures) which together constitute a resistor system.
The resistance band 201 is a resistance element which is arranged between a first support rod piece and a second support rod piece and is combined in a continuous mode, namely the resistance band 201 is formed by combining a band-shaped, sheet-shaped or strip-shaped resistance alloy back and forth up and down without joints, the band-shaped, sheet-shaped or strip-shaped resistance alloy is connected in series between the first support rod piece and the second support rod piece back and forth to form the resistance element. The upper end and the lower end of the resistance band 201 are respectively provided with a half-opening installation groove 209 for clamping the whole insulating tube, and the half-opening installation groove 209 is in a C-shaped half-opening shape so as to ensure that the resistance band can be integrally clamped into the half-opening installation groove 209 of the whole insulating tube 202.
Further, the half-open mounting groove 209 has a "C" shape and a half-open shape, and the opening direction of the upper and lower half-open mounting grooves is any one of the top surface and the side surface of the end portion of the two ends of the resistance band, and the opening directions of the upper and lower half-open mounting grooves of the two ends of the resistance band may be the same or the two half-open mounting grooves may be opposite.
The whole insulating tube 202 is circular or any polygon; the outer surface of the whole insulating tube is longitudinally provided with clamping grooves 210 according to the distance between the end heads 204 at the upper end and the lower end of the resistance band 201, the clamping grooves are used for clamping the two end heads of the resistance band 201, fixing the resistance band and forming insulation isolation between the two end heads of the resistance band 201; the depth of the clamping groove 210 is set to ensure that the diameter 214 of the bottom of the clamping groove is smaller than the width of the two half-open mounting grooves 209 at the upper and lower ends of the resistance band, so that the whole insulating tube 202 can be completely clamped into the end 204 of the resistance band 201; a through hole for penetrating a support rod is formed in the center of the cross section of the whole insulating tube 202, and the first support rod piece and the second support rod piece respectively penetrate through the through holes of the whole insulating tube up and down; grooves or bosses 213 for fixing the whole insulating tube are respectively arranged at two ends of the whole insulating tube 202, and the whole insulating tube 202 is fixedly connected with the resistance band or the support rod through the grooves or bosses 202 by fasteners after passing through the mounting holes at the upper end and the lower end of the resistance band, so that the whole insulating tube is positioned.
The whole insulating tube 202 is made of a ceramic material or a polymer composite insulating material, so as to ensure the high-temperature insulating performance of the resistor unit as a standard.
The embodiment is characterized in that: the isolation and the positioning of the two ends of the resistance band are also carried out by the whole insulating tube; different from the first embodiment, however, the whole insulating tube is not inserted through the mounting holes at the two ends of the resistance band, and the resistance band is clamped into the clamp grooves of the whole insulating tube by rotating the whole insulating tube, but the whole insulating tube with the clamp grooves is directly clamped into the C-shaped opening of the resistance band from the open grooves at the two ends of the resistance band to form positioning and isolation; after the whole insulating tube is clamped in place, the whole insulating tube is locked and fixed by the fastener through the grooves or the convex blocks at the two ends of the whole insulating tube, and the whole insulating tube is prevented from loosening and sliding out.
The above listed embodiments are only for clear and complete description of the technical solution of the present invention with reference to the accompanying drawings; it is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Through the description of the above embodiments, it can be seen that the present invention also relates to a method for improving the insulation performance of a chip resistor unit, in which resistor tapes or resistor discs are combined together in parallel, and adjacent resistor tapes or resistor discs are isolated from each other by a ceramic material, and the method is characterized in that the resistor tapes or resistor discs are isolated from each other by using an entire insulating tube, and the resistor tapes or resistor discs are isolated and insulated from each other by using the entire insulating tube.
Furthermore, the insulation of the resistor bands or the resistor discs through the whole insulating tube is realized by forming clamping grooves on the whole insulating tube, clamping all the resistor bands or the resistor discs into the clamping grooves of the whole insulating tube, and forming insulation and positioning between the resistor bands or the resistor discs through the clamping grooves.
Furthermore, the whole insulating tube is provided with the clamping grooves, the porcelain material for isolating the resistance bands or the resistance discs is made into a strip-shaped insulating tube, and the clamping grooves are formed in the outer surface of the insulating tube according to the spacing distance of the resistance bands or the resistance discs so as to ensure that the resistance bands or the resistance discs can be completely clamped in the corresponding clamping grooves of the insulating tube after being combined.
Furthermore, the shape of the insulating tube is a round, oval, rhombic, any polygonal or multi-tooth structure, and a clamping groove is formed in the round, oval, rhombic, any polygonal or multi-tooth outer surface.
Furthermore, the clamping groove of the insulating tube with the oval or diamond structure is arranged on the opposite angle of the long axis direction, and two sides of the insulating tube are provided with grooves; the depth of the clamping groove is based on the length of the reserved porcelain material and the distance of the reserved porcelain material is not less than the length of the short shaft, and the bottom diameter of the clamping groove is smaller than the size of the short shaft.
Furthermore, the step of clamping all the resistance tapes or resistance cards into the clamping grooves of the whole insulating tube is to form oval or diamond-shaped holes at the upper end and the lower end of each resistance tape or resistance card, the whole insulating tube is also made into an oval or diamond shape matched with the resistance tapes or resistance cards, and the clamping grooves are respectively formed inwards at the opposite angles of the long axis on the outer surface of the oval or diamond-shaped insulating tube; respectively penetrating the whole elliptic or rhombic insulating tube through the elliptic or rhombic holes at the upper end and the lower end of the resistance strip or the resistance sheet; after the resistance band or the resistance card passes through the resistance band or the resistance card, when the resistance band or the resistance card reaches a required position, the clamping grooves on the elliptic or rhombic insulating tube are completely corresponding to the elliptic or rhombic holes matched with the resistance band or the resistance card, then the elliptic or rhombic insulating tube is rotated, the clamping grooves on the elliptic or rhombic insulating tube are clamped on the resistance band or the resistance card to form clamping buckles of the resistance band or the resistance card, the resistance band or the resistance card is fixed, porcelain insulation among the resistance bands or the resistance card is also formed, and then the whole insulating tube is fixed to form a resistance band or a resistance card unit.
Further, in order to ensure that the whole elliptic or rhombic insulating tube can pass through the elliptic or rhombic holes matched with the resistance bands or the resistance sheets, the direction of the long and short axes of the ellipse of the elliptic or rhombic insulating tube is consistent with the direction of the long and short axes of the elliptic or rhombic holes matched with the resistance bands or the resistance sheets when the elliptic or rhombic insulating tube passes through the hole; and after the elliptic or rhombic insulating tube passes through the matched elliptic or rhombic hole of the resistance band or the resistance card in place, the elliptic or rhombic insulating tube is rotated by 90 degrees, so that the clamping groove of the elliptic or rhombic insulating tube is inserted into the short-axis side of the elliptic or rhombic hole of the resistance band or the resistance card to form a clamping structure.
Furthermore, the whole insulating tube is fixed by arranging a fixing device at the end part of the whole insulating tube, and the whole insulating tube is connected and fixed with other parts of the whole resistor unit through the fixing device to form stable connection.
Furthermore, the step of clamping all the resistance bands or resistance discs into the clamping grooves of the whole insulating tube is to form semicircular openings at the upper and lower ends of the resistance bands or resistance discs, the whole insulating tube is also made into a round shape or a multi-tooth shape, the clamping grooves are formed in the outer surface of the round shape or the multi-tooth shape insulating tube, and each clamping groove corresponds to one resistance band or resistance disc; continuously arranging the resistance bands or the resistance cards, clamping the whole insulating tube into the semicircular openings at the upper end and the lower end of the resistance bands or the resistance cards by using each clamping groove corresponding to one resistance band or resistance card from the semicircular openings at the upper end and the lower end of the resistance bands or the resistance cards, fixing ports of the resistance bands or the resistance cards, and isolating and insulating the resistance bands or the resistance cards through the whole insulating tube; and after the whole insulating tube is clamped into the electric resistance band or the resistance sheet assembly, the whole insulating tube is fixed to form a resistance band or a resistance sheet unit.
Furthermore, the whole insulating tube is clamped into the electric resistance band or the resistor disc assembly and then fixed, namely the support piece is inserted into the central hole of the whole insulating tube, the whole insulating tube with the support piece inserted into the electric resistance band or the semicircular opening at the upper end and the lower end of the resistor disc is clamped into the semicircular opening at the lower end of the resistor disc from the upper end and the lower end of the resistor band or the resistor disc, so that each port of the resistor disc is clamped into the clamping groove of the whole insulating tube, and then the whole insulating tube and the support piece are relatively fixed together to form a complete resistor unit.
The invention has the advantages that:
the invention changes the existing mode of isolating and insulating the resistance band or the resistance card by using the porcelain or the insulator respectively into the mode of insulating and isolating the resistance band or the resistance card by using the whole insulating tube, thereby not only simplifying the isolation mode, but also improving the overall insulating property of the resistance unit, effectively solving the problem that the creepage distance is easy to shorten in the rain environment due to the isolation and insulation between the resistance band or the resistance card, effectively improving the insulating property of the resistance unit in the rain environment, and meeting the high-voltage resistant requirement of the resistance unit in the rain environment.
Through adopting whole root insulating tube, between original porcelain spare and the resistance area has been eliminated completely, and the clearance between porcelain spare and the porcelain spare, make can not appear between resistance area and the bracing piece because the environment of drenching with the rain makes between porcelain spare and the resistance area, and the clearance between porcelain spare and the porcelain spare is soaked, lead to electrically conductive, thereby make the phenomenon that creepage distance between resistance area and the bracing piece dwindled greatly appear, the withstand voltage performance who adopts whole root insulating tube can not influenced by the environment of drenching with the rain again through experimental proof, and withstand voltage performance has improved greatly, with traditional porcelain spare isolation mode contrast test effect as follows:
| serial number | Name (R) | Pressure resistance under dry conditions | Pressure resistance value under |
| 1 | Insulating tube unit | 20000 VAC | 7000 |
| 2 | Legacy cell | 12000 VAC | 3000 VAC |
The test result clearly shows that the improved pressure resistance is obviously improved, and the performance requirements of various environments such as high-speed rails, motor cars and the like can be completely met.
Claims (5)
1. A method for improving the insulating property of a chip resistor unit is characterized in that resistor bands or resistor chips are arranged together in a combined mode, and adjacent resistor bands or resistor chips are isolated through insulating materials; the insulation and positioning of the resistor bands or the resistor discs through the whole insulating tube is realized by forming clamping grooves on the whole insulating tube, clamping all the resistor bands or the resistor discs into the clamping grooves of the whole insulating tube and forming insulation and positioning of the resistor bands or the resistor discs through the clamping grooves; all the resistance strips or resistance cards are clamped into the clamping grooves of the whole insulating tube, oval or rhombic holes are formed in the upper end and the lower end of each resistance strip or resistance card, the whole insulating tube is also made into an oval or rhombic shape matched with the resistance strips or resistance cards, and the clamping grooves are formed inwards in opposite corners of a long shaft on the outer surface of the oval or rhombic insulating tube respectively; respectively penetrating the whole elliptic or rhombic insulating tube through the elliptic or rhombic holes at the upper end and the lower end of the resistance strip or the resistance sheet; after the resistance band or the resistance card passes through the resistance band or the resistance card, when the resistance band or the resistance card reaches a required position, the clamping grooves on the elliptic or rhombic insulating tube are completely corresponding to the elliptic or rhombic holes matched with the resistance band or the resistance card, then the elliptic or rhombic insulating tube is rotated, the clamping grooves on the elliptic or rhombic insulating tube are clamped on the resistance band or the resistance card to form clamping buckles of the resistance band or the resistance card, the resistance band or the resistance card is fixed, porcelain insulation among the resistance bands or the resistance card is also formed, and then the whole insulating tube is fixed to form a resistance band or a resistance card unit.
2. The method for improving the insulation performance of the chip resistor unit as claimed in claim 1, wherein: the whole insulating tube is provided with the clamping grooves, the whole insulating tube is made of porcelain materials for isolating the resistance bands or the resistance discs into a long strip shape, and the clamping grooves are formed in the outer surface of the whole insulating tube according to the spacing distance of the resistance bands or the resistance discs so as to ensure that the resistance bands or the resistance discs can be completely clamped in the corresponding insulating tube clamping grooves after being combined.
3. The method for improving the insulation performance of the chip resistor unit as claimed in claim 1, wherein: the clamping grooves of the insulating tube with the oval or diamond structure are formed in opposite angles in the long axis direction, and grooves are formed in two sides of the insulating tube; the depth of the clamping groove is based on the length of the reserved porcelain material and the distance of the reserved porcelain material is not less than the length of the short shaft, and the bottom diameter of the clamping groove is smaller than the size of the short shaft.
4. The method for improving the insulation performance of the chip resistor unit as claimed in claim 1, wherein: in order to ensure that the whole elliptic or rhombic insulating tube can pass through the elliptic or rhombic holes matched with the resistance bands or the resistance discs, the direction of the long and short axes of the ellipse of the rhombic insulating tube is consistent with the direction of the long and short axes of the elliptic or rhombic holes matched with the resistance bands or the resistance discs when the elliptic or rhombic insulating tube passes through the hole; and after the elliptic or rhombic insulating tube passes through the matched elliptic or rhombic hole of the resistance band or the resistance card in place, the elliptic or rhombic insulating tube is rotated by 90 degrees, so that the clamping groove of the elliptic or rhombic insulating tube is inserted into the short-axis side of the elliptic or rhombic hole of the resistance band or the resistance card to form a clamping structure.
5. The method for improving the insulation performance of the chip resistor unit as claimed in claim 1, wherein: the whole insulating tube is fixed by arranging a fixing device at the end part of the whole insulating tube, and the whole insulating tube is connected and fixed with other parts of the whole resistance unit through the fixing device to form stable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910522175.1A CN110289144B (en) | 2019-06-17 | 2019-06-17 | Method for improving insulating property of chip resistor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910522175.1A CN110289144B (en) | 2019-06-17 | 2019-06-17 | Method for improving insulating property of chip resistor unit |
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| CN110289144A CN110289144A (en) | 2019-09-27 |
| CN110289144B true CN110289144B (en) | 2021-09-24 |
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| CN201910522175.1A Active CN110289144B (en) | 2019-06-17 | 2019-06-17 | Method for improving insulating property of chip resistor unit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202196630U (en) * | 2011-08-03 | 2012-04-18 | 四川永星电子有限公司 | Mica clamping bar of stainless steel chip resistor |
| CN204332572U (en) * | 2015-01-22 | 2015-05-13 | 河南中科起重电气有限公司 | A kind of resistor of mesh resistive component composition |
| CN204360867U (en) * | 2015-01-22 | 2015-05-27 | 河南中科起重电气有限公司 | A kind of frame-type stainless steel resistor |
| CN208061754U (en) * | 2018-03-19 | 2018-11-06 | 广东福德电子有限公司 | A kind of current-limiting resistor |
-
2019
- 2019-06-17 CN CN201910522175.1A patent/CN110289144B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202196630U (en) * | 2011-08-03 | 2012-04-18 | 四川永星电子有限公司 | Mica clamping bar of stainless steel chip resistor |
| CN204332572U (en) * | 2015-01-22 | 2015-05-13 | 河南中科起重电气有限公司 | A kind of resistor of mesh resistive component composition |
| CN204360867U (en) * | 2015-01-22 | 2015-05-27 | 河南中科起重电气有限公司 | A kind of frame-type stainless steel resistor |
| CN208061754U (en) * | 2018-03-19 | 2018-11-06 | 广东福德电子有限公司 | A kind of current-limiting resistor |
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| Publication number | Publication date |
|---|---|
| CN110289144A (en) | 2019-09-27 |
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