CN110136902B - High-voltage non-inductive resistor and manufacturing method thereof - Google Patents
High-voltage non-inductive resistor and manufacturing method thereof Download PDFInfo
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- CN110136902B CN110136902B CN201910378322.2A CN201910378322A CN110136902B CN 110136902 B CN110136902 B CN 110136902B CN 201910378322 A CN201910378322 A CN 201910378322A CN 110136902 B CN110136902 B CN 110136902B
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- 230000001939 inductive effect Effects 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000010935 stainless steel Substances 0.000 claims abstract description 72
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 72
- 238000005452 bending Methods 0.000 claims abstract description 18
- 229910001120 nichrome Inorganic materials 0.000 claims abstract description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 229910052786 argon Inorganic materials 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 13
- 230000032683 aging Effects 0.000 claims description 10
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 229910001566 austenite Inorganic materials 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000006104 solid solution Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 3
- 230000005520 electrodynamics Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 13
- 230000017525 heat dissipation Effects 0.000 description 6
- 239000011295 pitch Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
- H01C1/144—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals or tapping points being welded or soldered
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/04—Apparatus or processes specially adapted for manufacturing resistors adapted for winding the resistive element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/28—Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
-
- 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
- H01C3/02—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids arranged or constructed for reducing self-induction, capacitance or variation with frequency
-
- 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
-
- 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
The high-voltage non-inductive resistor comprises a plurality of S-shaped resistor pieces which are combined in series and parallel and are formed by bending hollow nichrome tubes made of Ni20Cr80, stainless steel connecting pieces are wrapped at the upper ends and the lower ends of the two sides of the resistor pieces and are welded at the joint of the stainless steel connecting pieces through argon arc welding, stainless steel frames are arranged at the two sides of the resistor pieces, the stainless steel connecting pieces are connected with the corresponding stainless steel frames, the resistor pieces are connected in series and parallel until at least two upper and lower adjacent resistor modules are formed, electric connection is realized between the resistor modules through copper bars or aluminum bars arranged on the stainless steel frames, and insulating supports are arranged between the upper and lower adjacent resistor modules and at the bottom surface of a bottom resistor module. The high-power high-voltage non-inductive resistor has the advantages of simple structure, small volume, low cost and excellent electrodynamic resistance, and can better meet the requirements of users on the high-power high-voltage non-inductive resistor.
Description
Technical Field
The invention relates to a novel high-voltage non-inductive resistor and a manufacturing method thereof.
Background
High voltage non-inductive resistors are the most commonly used power devices in the power transmission and distribution arts. The filter resistor for the extra-high voltage direct current transmission project, the filter resistor for SVC, the charging resistor for SVG, the starting resistor for the flexible direct current transmission project, the neutral point grounding resistor and the like provide wide market space for the high voltage noninductive resistor.
Along with upgrading and reforming of transmission and distribution networks, the power of the high-voltage non-inductive resistor is continuously increased. Conventional high-power noninductive resistors are classified into cast iron resistors, grid resistors, plate-strip resistors, mesh resistors, and the like. The resistance of the cast iron resistor is extremely difficult to control in the production process, and the cast iron resistor has low resistivity and heavy weight; the grid resistor forms the resistance element by processing the resistance alloy plate, so that the waste of raw materials is large during processing, the cost is high, and the resistance element is complex to process; the plate-band type and net-shaped resistor has the problems of weak short-time current impact resistance, low temperature resistance, large product volume and the like.
Disclosure of Invention
The invention aims to solve the technical problems of complex structure, high cost, large volume and poor short-time impact current resistance of the traditional high-power high-voltage non-inductive resistor, and provides a novel high-voltage non-inductive resistor and a manufacturing method thereof.
The invention is realized in the following way:
the high-voltage noninductive resistor comprises a plurality of S-shaped resistor pieces which are combined in series-parallel, and is characterized in that: the resistor disc is formed by bending a hollow nichrome tube made of Ni20Cr80, stainless steel connecting pieces are wrapped at the upper end and the lower end of two sides of the resistor disc and are welded at the joint of the stainless steel connecting pieces in an argon arc mode, stainless steel frames are arranged at the two sides of the resistor disc, the stainless steel connecting pieces are connected with the corresponding stainless steel frames, the resistor disc is connected in series and in parallel until at least two resistor modules adjacent to each other up and down are formed, electric connection is achieved between the adjacent resistor modules through copper bars or aluminum bars arranged on the stainless steel frames, and insulating supports are arranged between the upper resistor modules adjacent to each other and the bottom surface of the resistor module at the bottom layer.
Further preferably, the sheet spacing of the resistor sheets is more than or equal to 20mm, and the S-shaped corrugated pitch of the resistor sheets is more than or equal to 30mm, so that the requirements of air insulation, natural air cooling and heat dissipation and internal insulation of the resistor sheets are met.
Further preferably, a connecting plate frame is fixedly arranged on the stainless steel frame, and the connecting plate frame is connected with the stainless steel connecting piece.
Further preferably, the connecting plate frame and the stainless steel connecting piece are provided with mounting holes corresponding to each other, and the mounting holes are connected through bolts and nuts.
Further preferably, the insulating support is provided on a stainless steel frame adjacent thereto.
A method for manufacturing a high-voltage non-inductive resistor comprises the following steps:
1. adopting a hollow nickel-chromium alloy tube made of Ni20Cr80, and bending an S-shaped resistor according to the micro-inductance requirement;
2. The whole resistance sheet after bending forming is subjected to solid solution treatment at 980-1150 ℃, heat preservation is carried out for 10-20 min, water cooling treatment is carried out, carbide in the nickel-chromium alloy is dissolved, single-phase austenite is obtained, and aging treatment is carried out for 2.5-3.5 h at 900-950 ℃;
3. The upper end and the lower end of the two sides of the resistor piece after heat treatment are welded with stainless steel connecting pieces wrapped on the two sides of the resistor piece in an argon arc mode, the stainless steel connecting pieces are connected with stainless steel frames arranged on the two sides of the resistor piece, the resistor piece is combined in series-parallel to form at least two upper and lower adjacent resistor modules according to different powers and different resistance values, electric connection is achieved between the two adjacent resistor modules through copper bars or aluminum bars, insulating supports are arranged between the upper and lower adjacent resistor modules and on the bottom surfaces of the bottom resistor modules, and the insulating supports are connected with the adjacent stainless steel frames.
Further preferably, the sheet spacing of the resistor sheets is more than or equal to 20mm, and the S-shaped corrugated pitch of the resistor sheets is more than or equal to 30mm, so that the requirements of air insulation, natural air cooling and heat dissipation among the resistor sheets and insulation inside the resistor sheets are met.
Further preferably, a connecting plate frame is fixedly arranged on the stainless steel frame, and the connecting plate frame is connected with the stainless steel connecting piece.
Further preferably, the hollow nichrome tube has a resistivity of 1.10X10 -6Ω·m～1.14×10-6. OMEGA.m, thereby improving the mechanical strength of the hollow structural tube body.
The beneficial effects of the invention are as follows:
1. the resistor adopts a modularized design, and the resistor sheets are combined in series and parallel according to the design requirement to prepare resistor modules with different powers and different resistance values.
2. The resistor sheets in the resistor are bent in an S shape, wherein magnetic fields with opposite current directions of adjacent resistance wires are mutually offset, and the residual inductance on any resistance section of the resistor is extremely small and can reach uH level.
3. The resistor adopts the high-quality hollow nichrome tube as the resistance wire, so that the mechanical strength is high, the corrosion resistance and the oxidation resistance are excellent, and the current skin effect is enhanced. The whole resistance sheet after bending and forming adopts a solution treatment heat-preserving water-cooling heat treatment process, so that carbide in the nickel-chromium alloy is basically dissolved to obtain single-phase austenite, and then aging treatment is carried out, so that alloy carbide is separated out in grain boundary crystals, the linear expansion coefficient is reduced, the grain boundary structure of the high-temperature alloy is improved, the weak links of the grain boundary at high temperature are eliminated, the mechanical strength and the heat deformation resistance of the resistance wire after forming are enhanced, the short-time high-current impact resistance is improved, and the resistance is ensured not to deform when running at the high temperature of 500 ℃, so that a novel structure with fixed two ends and no support in the middle of the resistance sheet can be adopted.
4. Stainless steel connectors are adopted at the upper end and the lower end of the resistor piece, the stainless steel connectors are wrapped at the two ends of the resistor alloy tube and are subjected to argon arc welding, so that the mechanical strength of the wiring terminal is improved, the contact resistance is reduced, and the short-time impact resistance of the resistor is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of a hollow nichrome tube bent into a resistor sheet of the present invention;
FIG. 3 is a schematic view of the connection structure of the stainless steel connector and the resistor disc of the present invention;
FIG. 4 is an enlarged schematic view of the connection of the stainless steel connector and the resistor disc of the present invention;
fig. 5 is an enlarged view of a portion a in fig. 1.
In the figure: 1. the cable comprises a resistor, a hollow nichrome tube, a stainless steel connecting piece, a stainless steel frame, an insulating support, a copper bar or an aluminum bar, a mounting hole, a connecting plate frame and bolts.
Detailed Description
The invention is described in detail below with reference to the attached drawings and examples:
Example 1
As shown in the figure, the high-voltage non-inductive resistor comprises a plurality of S-shaped resistor pieces 1, wherein each resistor piece 1 is formed by bending a hollow nichrome tube 101 with Ni20Cr80 and resistivity of 1.10X10- -6 omega-m, the outer diameter of each hollow nichrome tube 101 is 3.0mm, the inner diameter of each hollow nichrome tube is 1.5mm, stainless steel connecting pieces 2 are wrapped at the upper ends and the lower ends of the two sides of each resistor piece 1, argon arc welding is conducted at the joint of the stainless steel connecting pieces 2, stainless steel frames 3 are arranged at the two sides of each resistor piece 1, connecting plate frames 7 are fixedly arranged on the stainless steel frames 3, mounting holes 6 corresponding to each other are formed in the positions of the stainless steel connecting pieces 2 and the corresponding connecting plate frames 7, the stainless steel connecting pieces 2 are connected with corresponding connecting plate frames 7 through bolts 8 and nuts installed in the mounting holes 6, and at least two resistor modules adjacent up and down are formed through serial and parallel combination according to different powers, the embodiment is two resistor modules adjacent up and down, the adjacent resistor modules are arranged between the adjacent resistor modules and are connected with each other through the stainless steel frames 4, and the adjacent resistor modules are connected through the stainless steel frames 4 through the stainless steel frames, and the adjacent resistor modules are connected through the adjacent resistor modules.
The sheet spacing of the resistor sheet 1 is more than or equal to 20mm, and the S-shaped corrugated pitch of the resistor sheet 1 is more than or equal to 30mm, so that air insulation and natural air cooling heat dissipation are realized, and the insulation strength requirement in the resistor sheet is met.
The manufacturing method of the high-voltage non-inductive resistor is as shown in the figure, and comprises the following steps:
1. Bending the hollow nichrome tube 101 into an S-shaped resistor disc 1 according to the micro-inductance requirement;
2. The whole resistance sheet 1 after bending and forming is subjected to solution treatment at 980 ℃, heat preservation is carried out for 20min, water cooling treatment is carried out, carbide in the nickel-chromium alloy is dissolved, single-phase austenite is obtained, and ageing treatment is carried out for 3h at 900 ℃ respectively; by solution treatment and aging treatment, the expansion coefficient of the material is reduced, thereby reducing the deformation of the resistor sheet.
3. The upper and lower ends of the two sides of the resistor disc 1 after heat treatment are welded with stainless steel connecting pieces 2 wrapped on the two sides of the resistor disc, stainless steel frames 3 are arranged on the two sides of the resistor disc 1, connecting plate frames 7 are welded on the stainless steel frames 3, mounting holes 6 corresponding to each other are formed in the stainless steel connecting pieces 2 and the connecting plate frames 7, the corresponding stainless steel connecting pieces 2 are connected with the stainless steel frames 3 through bolts 8 and nuts arranged at the mounting holes 6, the resistor disc 1 is combined in series-parallel according to different powers and different resistance values to form at least two resistor modules adjacent up and down, the two adjacent resistor modules are electrically connected through copper bars or aluminum bars 5, insulating supports 4 made of high-temperature resistant insulating materials are arranged between the upper and lower adjacent resistor modules and on the bottom surfaces of the bottom resistor modules, and the insulating supports 4 are connected with the corresponding stainless steel frames 5 through screws.
The spacing between the resistor plates is 20mm, the width H=120 mm, the length L=360 mm of the resistor plates and the number of times of corrugation pitch=30mm×12, so that the requirements of air insulation, natural air cooling heat dissipation and insulation strength in the resistor plates are met.
Example 2
The high-voltage non-inductive resistor, the "S" -shaped resistor sheet 1, is formed by bending a hollow nichrome tube 101 made of Ni20Cr80 and having a resistivity of 1.14X10 -6 Ω·m, and has the same structure as that described in example 1.
The manufacturing method of the high-voltage non-inductive resistor is as shown in the figure, and comprises the following steps:
1. bending the hollow nichrome tube 101 into an S-shaped resistor disc 1 according to the micro-induction requirement;
2. The whole resistance sheet 1 after bending and forming is subjected to solution treatment at 1150 ℃, heat preservation is carried out for 10min, water cooling treatment is carried out, carbide in the nickel-chromium alloy is dissolved, single-phase austenite is obtained, and ageing treatment is carried out for 3h at 950 ℃;
3. The upper and lower ends of the two sides of the resistor disc 1 after heat treatment are welded with stainless steel connecting pieces 2 wrapped on the two sides of the resistor disc, stainless steel frames 3 are arranged on the two sides of the resistor disc 1, connecting plate frames 7 are welded on the stainless steel frames 3, mounting holes 6 corresponding to each other are formed in the stainless steel connecting pieces 2 and the connecting plate frames 7, the corresponding stainless steel connecting pieces 2 are connected with the stainless steel frames 3 through bolts 8 and nuts arranged at the mounting holes 6, the resistor disc 1 is combined in series-parallel according to different powers and different resistance values to form at least two resistor modules adjacent to each other up and down, the two adjacent resistor modules are electrically connected through copper bars or aluminum bars 5, insulating supports 4 made of high-temperature resistant insulating materials are arranged between the upper and lower adjacent resistor modules and on the bottom surface of the bottom resistor module, and the insulating supports 4 are connected with the adjacent stainless steel frames 3 through screws.
The spacing between the resistor plates is 25mm, the width H=120 mm, the length L=420 mm of the resistor plates and the number of times of corrugation pitch=35mm×12, so that the requirements of air insulation, natural air cooling heat dissipation and insulation strength in the resistor plates are met.
Example 3
The high-voltage non-inductive resistor, the "S" -shaped resistor sheet 1, is formed by bending a hollow nichrome tube 101 made of Ni20Cr80 and having a resistivity of 1.12X -6 Ω·m, and has the same structure as that described in example 1.
The manufacturing method of the high-voltage non-inductive resistor is as shown in the figure, and comprises the following steps:
1. Bending the hollow nichrome tube 101 into an S-shaped resistor disc 1 according to the micro-inductance requirement;
2. the whole resistance sheet 1 after bending and forming is subjected to solid solution treatment at 1060 ℃, heat preservation is carried out for 15min, water cooling treatment is carried out, carbide in the nickel-chromium alloy is dissolved, single-phase austenite is obtained, and ageing treatment is carried out for 3h at 920 ℃;
3. The upper and lower ends of the two sides of the resistor disc 1 after heat treatment are welded with stainless steel connecting pieces 2 wrapped on the two sides of the resistor disc, stainless steel frames 3 are arranged on the two sides of the resistor disc 1, connecting plate frames 7 are welded on the stainless steel frames 3, mounting holes 6 corresponding to each other are formed in the stainless steel connecting pieces 2 and the connecting plate frames 7, the corresponding stainless steel connecting pieces 2 are connected with the stainless steel frames 3 through bolts 8 and nuts arranged at the mounting holes 6, the resistor disc 1 is combined in series-parallel according to different powers and different resistance values to form at least two resistor modules adjacent up and down, the two adjacent resistor modules are electrically connected through copper bars or aluminum bars 5, insulating supports 4 made of high-temperature resistant insulating materials are arranged between the upper and lower adjacent resistor modules and on the bottom surfaces of the bottom resistor modules, and the insulating supports 4 are connected with the corresponding stainless steel frames 3 through bolts.
The spacing between the resistor plates is 30mm, the width H=120 mm, the length L=480 mm of the resistor plates and the number of corrugation pitches=40 mm×12, so that air insulation and natural air cooling heat dissipation are met, and the insulation strength requirement in the resistor plates is met.
The hardness values, resistivity, and linear expansion coefficients of the resistive sheets corresponding to the above three examples are shown in tables 1,2, and 3, respectively:
TABLE 1 hardness values of resistor discs (HV 0.2)
| Original state | Solution treatment of | Aging treatment | |
| Example 1 | 205 | 203 | 229 |
| Example 2 | 205 | 206 | 235 |
| Example 3 | 205 | 204 | 230 |
Table 2 resistivity of the resistive sheet (mu Ω x m)
TABLE 3 coefficient of expansion of electrothermal wire at different time-effect temperatures
| Original sample | Solution treatment of | Aging treatment | |
| Example 1 (400 ℃ C.) | 14.79 | 12.20 | 10.86 |
| Example 2 (500 ℃ C.) | 15.94 | 13.12 | 11.51 |
| Example 3 (600 ℃ C.) | 16.65 | 13.98 | 12.41 |
When the number of the resistor modules is four, two of the resistor modules are adjacent up and down, the other two resistor modules are arranged in parallel, and the insulation distance between the left and right adjacent resistor modules meets the insulation requirement between the two parallel resistor modules.
The above is only a specific embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-voltage non-inductive resistor comprises a plurality of S-shaped resistor pieces which are combined in series-parallel, and is characterized in that: the resistor disc is formed by bending a hollow nickel-chromium alloy tube made of Ni20Cr80, the whole resistor disc after bending is subjected to solid solution treatment at 980-1150 ℃, heat preservation is carried out for 10-20 min, water cooling treatment is carried out, carbide in the nickel-chromium alloy is basically dissolved, single-phase austenite is obtained, and aging treatment is carried out at 900-950 ℃ for 2.5-3.5 h; stainless steel connectors are wrapped at the upper ends and the lower ends of the two sides of the resistor piece, the stainless steel frames are arranged at the two sides of the resistor piece and are connected with the corresponding stainless steel frames, so that the resistor piece is connected in series and in parallel until at least two upper and lower adjacent resistor modules are formed, the adjacent resistor modules are electrically connected through copper bars or aluminum bars arranged on the stainless steel frames, and insulating supports are arranged between the upper and lower adjacent resistor modules and on the bottom surface of the bottom resistor module.
2. The high voltage non-inductive resistor of claim 1, wherein: the sheet spacing of the resistor sheets is more than or equal to 20mm, and the S-shaped ripple pitch of the resistor sheets is more than or equal to 30mm.
3. The high voltage non-inductive resistor of claim 1, wherein: the stainless steel frame is fixedly provided with a connecting plate frame, and the connecting plate frame is connected with the stainless steel connecting piece.
4. A high voltage non-inductive resistor according to claim 3, characterized in that: the connecting plate frame and the stainless steel connecting piece are provided with mounting holes corresponding to each other, and are connected through bolts and nuts.
5. The high voltage non-inductive resistor of claim 1, wherein: the insulating support is arranged on the stainless steel frame adjacent to the insulating support.
6. A manufacturing method of a high-voltage non-inductive resistor is characterized in that: the method comprises the following steps:
1) Bending an S-shaped resistor disc according to the micro-inductance requirement by adopting a hollow nickel-chromium alloy tube made of Ni20Cr 80;
2) The whole resistance sheet after bending and forming is subjected to solid solution treatment at 980-1150 ℃, heat preservation is carried out for 10min-20 min, water cooling treatment is carried out, carbide in the nickel-chromium alloy is basically dissolved, single-phase austenite is obtained, and aging treatment is carried out at 900-950 ℃ for 2.5-3.5 h;
3) And the upper and lower ends of the two sides of the resistor piece after heat treatment are welded with stainless steel connecting pieces wrapped on the two sides of the resistor piece through argon arc, the stainless steel connecting pieces are connected with stainless steel frames arranged on the two sides of the resistor piece, the resistor piece is combined in series and parallel to form at least two upper and lower adjacent resistor modules according to different powers and different resistance values, the two adjacent resistor modules are electrically connected through copper bars or aluminum bars, and insulating supports are arranged between the upper and lower adjacent resistor modules and the bottom surface of the bottom resistor module.
7. The method for manufacturing the high-voltage non-inductive resistor according to claim 6, wherein: the sheet spacing of the resistor sheets is more than or equal to 20mm, and the S-shaped ripple pitch of the resistor sheets is more than or equal to 30mm.
8. The method for manufacturing the high-voltage non-inductive resistor according to claim 6, wherein: the stainless steel frame is fixedly provided with a connecting plate frame, and the connecting plate frame is connected with the stainless steel connecting piece.
9. The method for manufacturing the high-voltage non-inductive resistor according to claim 6, wherein: the resistivity of the hollow nichrome tube was 1.10X10 -6Ω·m ～1.14×10-6. OMEGA.m.
10. The method for manufacturing the high-voltage non-inductive resistor according to claim 6, wherein: the insulating support is arranged on the stainless steel frame adjacent to the insulating support.
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| CN201910378322.2A CN110136902B (en) | 2019-05-08 | 2019-05-08 | High-voltage non-inductive resistor and manufacturing method thereof |
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| CN110136902B true CN110136902B (en) | 2024-08-02 |
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| CN209708734U (en) * | 2019-05-08 | 2019-11-29 | 凌海科诚电气股份公司 | High voltage non-inductance resistor device |
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| JP2000340414A (en) * | 1999-05-27 | 2000-12-08 | Tokyo Koon Denpa Kk | Non-inductive winding fixed resistor |
| CN201247658Y (en) * | 2008-06-03 | 2009-05-27 | 浙江三港起重电器有限公司 | Stainless sheet type resistor |
| DE102010053389A1 (en) * | 2010-12-03 | 2012-06-06 | Vishay Electronic Gmbh | Electrical power resistor |
| CN202487306U (en) * | 2012-01-17 | 2012-10-10 | 深圳市华力特电气股份有限公司 | Flow equilibrating device |
| CN103540803B (en) * | 2013-10-30 | 2016-03-02 | 钢铁研究总院 | A kind of high rigidity is without magnetic nichrome and preparation method thereof |
| CN205723029U (en) * | 2016-04-18 | 2016-11-23 | 上海久能机电制造有限公司 | A kind of resistance of novel suppression DC magnetic bias current |
| CN208335898U (en) * | 2018-05-18 | 2019-01-04 | 上海久能机电制造有限公司 | A kind of high voltage bearing sheet serpentine resistive of novel high-power |
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2019
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209708734U (en) * | 2019-05-08 | 2019-11-29 | 凌海科诚电气股份公司 | High voltage non-inductance resistor device |
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