CN110323017B - Method for isolating insulated resistor disc through rotation of integral insulating tube and resistor unit - Google Patents
Method for isolating insulated resistor disc through rotation of integral insulating tube and resistor unit Download PDFInfo
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- CN110323017B CN110323017B CN201910523117.0A CN201910523117A CN110323017B CN 110323017 B CN110323017 B CN 110323017B CN 201910523117 A CN201910523117 A CN 201910523117A CN 110323017 B CN110323017 B CN 110323017B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
- H01C1/014—Mounting; Supporting the resistor being suspended between and being supported by two supporting sections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
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- H01C1/16—Resistor networks not otherwise provided for
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C13/00—Resistors not provided for elsewhere
- H01C13/02—Structural combinations of resistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/02—Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing
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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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Abstract
A method for isolating insulation resistance cards through rotation of an integral insulating tube and a resistance unit are characterized in that the integral insulating tube penetrates through resistance tapes or resistance cards which are combined and arranged together, after the integral insulating tube penetrates through the resistance tapes or the resistance cards, a clamping groove in the integral insulating tube clamps the resistance tapes or the resistance cards through rotation, and the integral insulating tube is used for isolating, insulating and positioning the resistance tapes or the resistance cards. The clamping grooves are formed in the integral insulating tube, the integral insulating tube penetrates through all the resistance bands or resistance discs and then is rotated, so that the resistance bands or the resistance discs are clamped by the clamping grooves in the integral insulating tube, and isolation insulation and positioning are formed between the resistance bands or the resistance discs through the clamping grooves. The resistor band or the resistor disc is clamped by the integral insulating tube rotating in the mounting hole of the resistor disc or the resistor disc, so that the resistor band or the resistor disc can be effectively positioned, the insulation isolation between the resistor band or the resistor disc can be effectively realized, the creepage distance of the resistor band or the resistor disc is increased, and the insulation performance of the resistor 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 isolating the insulated resistance cards through rotating the integral insulating tube, the integral insulating tube penetrates through the resistance tapes or the resistance cards which are combined and arranged together, after the integral insulating tube penetrates through the resistor tapes or the resistance cards, the clamping grooves on the integral insulating tube clamp the resistance tapes or the resistance cards through rotation, and the integral insulating tube is used for isolating, insulating and positioning the resistance tapes or the resistance cards.
Furthermore, the step of isolating and insulating the resistance bands or the resistance cards through the integral insulating tube is to form clamping grooves on the integral insulating tube, and the integral insulating tube penetrates through all the resistance bands or the resistance cards and then rotates the integral insulating tube, so that the clamping grooves on the integral insulating tube clamp the resistance bands or the resistance cards, and the resistor bands or the resistance cards are isolated, insulated and positioned through the clamping grooves.
Furthermore, the clamping groove is formed in the integral insulating tube, the porcelain material for isolating the resistance bands or the resistance discs is made into a strip-shaped insulating tube, and the clamping groove is 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 oval or rhombic, and the clamping grooves are arranged at two ends of the long axis of the oval or rhombic insulating tube and extend into the insulating tube from the tops of the two ends of the long axis.
Furthermore, the depth of the clamping groove is smaller than the length of the two ends of the short shaft by the distance formed between the groove bottoms of the clamping grooves at the two ends, so that the clamping groove and the resistance band or the resistance card cannot interfere when the insulating tube rotates.
Furthermore, the insulating tube is made of a ceramic tube or a high-temperature-resistant composite draft molecular material.
Furthermore, the isolation insulation and positioning between the resistance bands or the resistance cards through the clamping grooves are realized by forming oval or rhombic holes at the upper end and the lower end of each resistance band or each resistance card, manufacturing the integral insulating tube into an oval or rhombic shape matched with the resistance bands or the resistance cards, and respectively inwards forming the clamping grooves at the opposite angles of the long axis on the outer surface of the oval or rhombic 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 resistor, when the resistor reaches a required position, the clamping grooves on the elliptic or rhombic insulating tube are all 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 a buckle 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 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 holes; 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 fixing of the integral insulating tube is to arrange a fixing device at the end of the integral insulating tube, and connect and fix the integral insulating tube and other components of the whole resistor unit through the fixing device to form a stable connection.
A resistance unit for realizing a method for rotationally isolating an insulating resistance card by an integral insulating tube comprises a resistance band or a resistance card, an insulating part between the resistance bands or the resistance cards and a supporting rod, wherein the resistance unit is formed by combining the supporting rod, the insulating part between the resistance bands or the resistance cards and the resistance bands or the resistance cards; the resistor band or the resistor disc is characterized in that the insulating part is an integral insulating pipe, the integral insulating pipe penetrates through the mounting holes formed in the two ends of the resistor band or the resistor disc, and then the mounting holes in the two ends rotate to enable the resistor band or the resistor disc to be mutually isolated and positioned.
Furthermore, the outer surface of the integral insulating tube is provided with a clamping groove; the resistor belt or the resistor disc are mutually isolated and positioned by rotating the mounting holes at the two ends, namely, the two ends of the resistor belt or the resistor disc are grooved on the oval or rhombus long axis of the resistor belt or the resistor disc, the integral insulating tube penetrates through all the resistor belts or the resistor disc and then is rotated, so that the resistor belt or the resistor disc is clamped by the clamping grooves on the integral insulating tube, and isolation insulation and positioning are formed between the resistor belts or the resistor disc through the clamping grooves.
The invention has the advantages that:
the resistor band or the resistor disc is clamped by the integral insulating tube rotating in the mounting hole of the resistor disc or the resistor disc, so that the resistor band or the resistor disc can be effectively positioned, the insulation isolation between the resistor band or the resistor disc can be effectively realized, the creepage distance of the resistor band or the resistor disc is greatly increased, the phenomenon that the insulation performance is influenced due to the problems of humidity and the like can be avoided, and the insulation performance of the resistor is improved.
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 the assembly of the entire insulating tube of 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. 2 taken in the direction of K;
FIG. 6 is a schematic view of the construction of the entire insulating tube of the present invention;
FIG. 7 is a schematic top view of the structure of FIG. 6;
FIG. 8 is a schematic cross-sectional view of FIG. 6;
FIG. 9 is a schematic structural view of an entire insulating tube according to another embodiment;
FIG. 10 is a schematic top view of the structure of FIG. 9;
FIG. 11 is a schematic cross-sectional view of FIG. 9;
FIG. 12 is a schematic view of the structure of an entire insulating tube according to another embodiment;
FIG. 13 is a schematic top view of the structure of FIG. 12;
fig. 14 is a schematic cross-sectional structure of fig. 12.
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 2-8, 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 (as shown in figure 8), 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 mounting holes 9 at the upper end and the lower end of the resistance band can pass through; 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 made of porcelain material; 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, but the structure is slightly different, and different parts are shown in the attached fig. 9-11, the resistance unit of the resistance band combined structure comprises a support rod, a resistance card, an integral insulating tube and a conductor, the support rod, the resistance card and the integral insulating tube are combined to form the resistance unit, and the two ends of the resistance card are isolated and positioned through the integral insulating tube during isolation and positioning; the integral insulating tube is a composite polymer insulating tube made of polymer composite materials.
The two support rods 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 card and penetrate through the central hole on the composite polymer insulating tube, two ends of the first support rod piece and the second support rod piece extend out of the composite polymer insulating tube, the two extended ends are fixedly positioned by a fastener, and the first support rod piece and the second support rod piece and the resistance card form a frame structure; the first support bar and the second support bar are fixed in parallel and separately in a frame, which also holds other resistor rows, which together constitute the resistor units of a resistor system.
The resistance band is a resistance element which is arranged between the first support rod piece and the second support rod piece and is combined in a continuous mode, namely the resistance band is formed by combining a band-shaped, sheet-shaped or strip-shaped resistance alloy without joints back and forth up and down, and 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. And mounting holes for the donor insulating tubes to pass through are formed in the upper end and the lower end of the resistance band respectively, and the mounting holes are diamond-shaped so as to ensure that the whole porcelain tube can pass through the mounting holes of the resistance band.
The mounting holes are rhombic holes, the directions of the rhombuses of the upper mounting hole and the lower mounting hole are consistent, the directions of the connecting lines of the upper mounting hole and the lower mounting hole of the resistance band and the two mounting holes can be consistent, or the long axes of the upper mounting hole and the lower mounting hole of the resistance band are parallel to each other.
The shape of the integral composite polymer tube 202 is rhombic, the integral composite polymer tube is matched with the rhombic shape of the mounting holes at the upper end and the lower end of the resistance band and is smaller than the mounting holes at the upper end and the lower end of the resistance band so as to ensure that the integral composite polymer tube can penetrate through the mounting holes at the upper end and the lower end of the resistance band, and the rhombic diamond corners 215 are in fillet transition; clamping grooves 210 are formed in the outer surface of the integral composite polymer tube according to the distance between the upper end and the lower end of the resistance band, are used for clamping the two ends of the resistance band, fix the resistance band and form insulation isolation between the two ends of the resistance band; the clamping grooves 210 are arranged at two ends of the diamond-shaped integral composite polymer tube in the major axis direction, and the depth of each clamping groove is set to ensure that the diameter of the bottom of each clamping groove is smaller than that of the diamond-shaped minor axis of the integral composite polymer tube; a through hole for penetrating a support rod is formed in the center of the section of the integral composite polymer tube, and the first support rod piece and the second support rod piece respectively penetrate through the through holes of the upper integral composite polymer tube and the lower integral composite polymer tube; the two ends of the integral composite polymer pipe are respectively provided with a groove or a boss for fixing the integral composite polymer pipe, and the integral composite polymer pipe is fixedly connected with the resistance band or the support rod through the groove or the boss after passing through the mounting holes at the upper end and the lower end of the resistance band, so that the integral composite polymer pipe is positioned.
The embodiment is characterized in that: the isolation and the positioning of the two ends of the resistance card are also carried out through the integral composite polymer tube; different from the first embodiment, however, the integral insulating tube is not made of a polymer material, and is of a diamond structure, and the integral insulating tube made of a polymer composite material of the integral diamond structure passes through the mounting holes at the two ends of the resistor disc, and the resistor disc is clamped into the clamping groove of the integral composite polymer tube by rotating the integral composite polymer tube; after the integral composite polymer pipe is clamped in place, the integral composite polymer pipe is locked and fixed by the fastener through the grooves or the lugs at the two ends of the integral composite polymer pipe, so that the integral composite polymer pipe is prevented from loosening and sliding out.
EXAMPLE III
The principle of the second embodiment is the same as that of the first embodiment, but the structure is slightly different, and different parts are shown in the attached fig. 12-14, the resistance unit of the resistance band combined structure comprises a support rod, a resistance card, an integral insulating tube and a conductor, the support rod, the resistance card and the integral insulating tube are combined to form the resistance unit, and the two ends of the resistance card are isolated and positioned by the integral insulating tube during isolation and positioning; the integral insulating tube is made of ceramic materials.
The cross section of the whole ceramic insulating tube 302 is in a multi-tooth shape with the upper end and the lower end protruding; a plurality of clamping teeth 316 arranged along the length of the whole ceramic tube are respectively arranged on the upper surface and the lower surface of the whole ceramic insulating tube 302, and clamping grooves 310 are formed between the clamping teeth in the length direction of the whole ceramic insulating tube; and mounting holes are formed in the two ends of the resistance card, are the same as the cross section of the whole ceramic insulating tube and are larger than the cross section of the whole ceramic insulating tube, so that the whole ceramic tube can penetrate through the mounting holes of the resistance band.
During installation, the whole ceramic insulation pipe penetrates through the installation hole of the resistor disc and then rotates for 90 degrees, so that the resistor disc is clamped into the clamping groove of the whole ceramic insulation pipe, and the resistor disc is isolated and positioned through the whole ceramic insulation pipe.
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.
From the above description of the embodiments, it can be seen that the present invention also relates to a method for isolating and insulating resistance cards by rotating an integral insulating tube and a resistance unit, wherein resistance tapes or resistance cards are assembled together by a plurality of parallel arrangement, and adjacent resistance tapes or resistance cards are isolated by a ceramic material.
Furthermore, the step of isolating and insulating the resistance bands or the resistance cards through the integral insulating tube is to form clamping grooves on the integral insulating tube, clamp all the resistance bands or the resistance cards into the clamping grooves of the integral insulating tube, and form isolation insulation and positioning between the resistance bands or the resistance cards through the clamping grooves.
Furthermore, the clamping groove is formed in the integral insulating tube, the porcelain material for isolating the resistance bands or the resistance discs is made into a strip-shaped insulating tube, and the clamping groove is 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 insulating tube is in a round, oval, rhombic or multi-tooth structure in shape, and a clamping groove is formed in the round, oval, rhombic or multi-tooth outer surface.
Furthermore, the clamping groove of the insulating tube with the oval structure is arranged on the opposite angle of the long axis direction, and the 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 not less 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 integral insulating tube is to form elliptical holes at the upper end and the lower end of each resistance tape or resistance card, the integral insulating tube is also made into an elliptical shape matched with the resistance tapes or resistance cards, and the clamping grooves are formed inwards at the opposite angles of the long axis on the outer surface of the elliptical insulating tube respectively; respectively penetrating the whole elliptic insulating tube through the resistance belt or the elliptic holes at the upper end and the lower end of the resistance sheet; after the resistance band or the resistance card passes through the oval insulation tube, when the resistance band or the resistance card reaches a required position, the clamping grooves in the oval insulation tube are all corresponding to the oval holes matched with the resistance band or the resistance card, then the oval insulation tube is rotated, the clamping grooves in the oval insulation tube are clamped on the resistance band or the resistance card to form clamping buckles for 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 formed, and then the whole insulation tube is fixed to form a resistance band or a resistance card unit.
Further, in order to ensure that the whole elliptical insulation tube can penetrate through the elliptical hole matched with the resistance tape or the resistance card, the direction of the major axis and the minor axis of the ellipse of the elliptical insulation tube is consistent with the direction of the major axis and the minor axis of the elliptical hole matched with the resistance tape or the resistance card when the elliptical insulation tube penetrates through the elliptical hole; and the elliptic insulating tube is rotated by 90 degrees after penetrating through the elliptic holes matched with the resistance bands or the resistance discs in place, so that the clamping grooves of the elliptic insulating tube are inserted into the short shaft edges of the elliptic holes of the resistance bands or the resistance discs to form a clamping structure.
Furthermore, the fixing of the integral insulating tube is to arrange a fixing device at the end of the integral insulating tube, and connect and fix the integral insulating tube and other components of the whole resistor unit through the fixing device to form a stable connection.
Furthermore, the step of clamping all the resistance bands or resistance discs into the clamping grooves of the integral insulating tube is to form semicircular openings at the upper and lower ends of the resistance bands or resistance discs, the integral insulating tube is also made into a round shape or a multi-tooth shape, the outer surface of the round shape or the multi-tooth shape insulating tube is provided with the clamping grooves, 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 clamping 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 integral insulating tube is clamped into the electric resistance band or the resistance sheet assembly, the integral insulating tube is fixed to form a resistance band or a resistance sheet unit.
Furthermore, the whole insulating tube is fixed after the whole insulating tube is clamped into the electric resistance band or the resistance card assembly, the support piece is inserted into a central hole of the whole insulating tube, the whole insulating tube inserted with the support piece is clamped into the electric resistance band or the semicircular openings at the upper end and the lower end of the resistance card from the upper end and the lower end of the resistance band or the resistance card, each port of the resistance card 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 resistance 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 integral insulating tube, thereby not only simplifying the isolation mode, but also improving the integral 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 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 the creepage distance between resistance area and the bracing piece reduces greatly appear, the withstand voltage performance who adopts whole insulating tube can not influenced by the environment of drenching with the rain again through experimental proof, and withstand voltage performance has had very big improvement, 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 (8)
1. A method for isolating insulation resistance cards through rotation of an integral insulating tube is characterized in that the integral insulating tube penetrates through resistance tapes or resistance cards which are arranged together in a combined mode, after the integral insulating tube penetrates through the resistance tapes or the resistance cards, a clamping groove in the integral insulating tube clamps the resistance tapes or the resistance cards through rotation, and the integral insulating tube is used for isolating, insulating and positioning the resistance tapes or the resistance cards; the method is characterized in that: the isolation and insulation of the resistor bands or the resistor discs through the integral insulating tube is realized by opening clamping grooves on the integral insulating tube, penetrating the integral insulating tube through all the resistor bands or the resistor discs and then rotating the integral insulating tube, so that the clamping grooves on the integral insulating tube clamp the resistor bands or the resistor discs, and the isolation and insulation and positioning of the resistor bands or the resistor discs are realized through the clamping grooves; the insulation and positioning of the resistor strips or the resistor discs through the clamping grooves are realized by forming oval or rhombic holes at the upper end and the lower end of the resistor strips or the resistor discs, manufacturing the integral insulating tube into an oval or rhombic shape matched with the resistor strips or the resistor discs, and respectively inwards forming the clamping grooves at the opposite angles of the long axis on the outer surface of the oval or rhombic 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 resistor, when the resistor reaches a required position, the clamping grooves on the elliptic or rhombic insulating tube are all 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 a buckle 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 of claim 1 for rotationally isolating insulation resistor discs through integral insulation tubes, wherein: the clamping groove is formed in the integral insulating tube, the porcelain material for isolating the resistance bands or the resistance discs is made into a strip-shaped insulating tube, and the clamping groove is 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.
3. The method of isolating insulation resistor discs by rotating an integral insulation tube as claimed in claim 2, wherein: the shape of the insulating tube is oval or rhombic, and the clamping grooves are arranged at two ends of the long shaft of the oval or rhombic insulating tube and extend into the insulating tube from the tops of the two ends of the long shaft.
4. The method of claim 3 for rotationally isolating insulation resistor discs through integral insulation tubes, wherein: the depth of the clamping grooves is smaller than the length of the two ends of the short shaft by the distance formed between the bottoms of the clamping grooves at the two ends, so that the clamping grooves cannot interfere with the resistance band or the resistance card when the insulating tube rotates.
5. The method of claim 1 for rotationally isolating insulation resistor discs through integral insulation tubes, 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 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 discs when the elliptic or rhombic insulating tube passes through the elliptic or rhombic holes; 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.
6. The method of claim 1 for rotationally isolating insulation resistor discs through integral insulation tubes, wherein: the fixing device is arranged at the end part of the integral insulating tube, and the integral insulating tube is connected and fixed with other parts of the whole resistor unit through the fixing device to form stable connection.
7. A resistor unit for realizing the method for insulating the resistor discs by rotating the integral insulating tube according to claim 1, which comprises resistor belts or resistor discs, insulators between the resistor belts or resistor discs and support rods, wherein the resistor unit is formed by combining the support rods, the insulators between the resistor belts or resistor discs and the resistor belts or resistor discs; the resistance band or the resistance card is provided with mounting holes at two ends, the insulating piece is provided with a central hole, the support rod penetrates through the central hole on the insulating piece to isolate and position the resistance band or the resistance card, and the resistance band or the resistance card is characterized in that the insulating piece is an integral insulating tube, penetrates through the mounting holes arranged at two ends of the resistance band or the resistance card through the integral insulating tube, and rotates in the mounting holes at two ends to isolate and position the resistance band or the resistance card; the shape of the insulating tube is oval or rhombic, and the clamping grooves are arranged at two ends of the long shaft of the oval or rhombic insulating tube and extend into the insulating tube from the tops of the two ends of the long shaft.
8. The resistor unit of claim 7, wherein the integral insulating tube has a slot formed in an outer surface thereof; the clamping grooves are formed in the inner portion of the resistor strip or the resistor disc from the top end of the long shaft in the oval or diamond long shaft direction, so that the integral insulating tube penetrates through all the resistor strips or the resistor disc and then is rotated, each clamping groove in the integral insulating tube clamps the corresponding resistor strip or the resistor disc, and the resistor strips or the resistor disc are isolated, insulated and positioned through the clamping grooves.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910523117.0A CN110323017B (en) | 2019-06-17 | 2019-06-17 | Method for isolating insulated resistor disc through rotation of integral insulating tube and resistor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910523117.0A CN110323017B (en) | 2019-06-17 | 2019-06-17 | Method for isolating insulated resistor disc through rotation of integral insulating tube and resistor unit |
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| CN110323017A CN110323017A (en) | 2019-10-11 |
| CN110323017B true CN110323017B (en) | 2021-09-24 |
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| CN201910523117.0A Active CN110323017B (en) | 2019-06-17 | 2019-06-17 | Method for isolating insulated resistor disc through rotation of integral insulating tube and resistor unit |
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| CA1047137A (en) * | 1974-11-05 | 1979-01-23 | Heinz Lammermann | Externally ventilated strip-resistance unit having a high load-carrying capacity |
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| CN204332752U (en) * | 2014-12-26 | 2015-05-13 | 镇江香江云动力科技有限公司 | Mould shell switch machine interlock |
| 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 |
| CN105741991A (en) * | 2016-03-30 | 2016-07-06 | 湖南中车特种电气装备有限公司 | Water-cooling resistance device for frequency conversion system |
| 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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2019
- 2019-06-17 CN CN201910523117.0A patent/CN110323017B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1047137A (en) * | 1974-11-05 | 1979-01-23 | Heinz Lammermann | Externally ventilated strip-resistance unit having a high load-carrying capacity |
| 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 |
| CN104091662A (en) * | 2014-07-04 | 2014-10-08 | 上海鹰峰电子科技有限公司 | Belt type large-power resistor |
| CN204332752U (en) * | 2014-12-26 | 2015-05-13 | 镇江香江云动力科技有限公司 | Mould shell switch machine interlock |
| 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 |
| CN105741991A (en) * | 2016-03-30 | 2016-07-06 | 湖南中车特种电气装备有限公司 | Water-cooling resistance device for frequency conversion system |
| CN208061754U (en) * | 2018-03-19 | 2018-11-06 | 广东福德电子有限公司 | A kind of current-limiting resistor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110323017A (en) | 2019-10-11 |
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