CN111751590A - Shunt with heat dissipation teeth - Google Patents
Shunt with heat dissipation teeth Download PDFInfo
- Publication number
- CN111751590A CN111751590A CN202010640835.9A CN202010640835A CN111751590A CN 111751590 A CN111751590 A CN 111751590A CN 202010640835 A CN202010640835 A CN 202010640835A CN 111751590 A CN111751590 A CN 111751590A
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- heat dissipation
- shunt
- teeth
- copper
- alloy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/146—Measuring arrangements for current not covered by other subgroups of G01R15/14, e.g. using current dividers, shunts, or measuring a voltage drop
Abstract
The invention relates to a flow divider with heat dissipation teeth, which comprises a manganese-copper alloy belt and two copper bars. The manganese-copper alloy strip comprises resistance alloy, and the end parts of two ends of the resistance alloy are respectively welded with the two copper bars. The front side and the rear side of the resistance alloy are respectively provided with a heat dissipation rack in an integrated forming way. The heat dissipation rack comprises a plurality of heat dissipation teeth which are closely and uniformly distributed. Because the manganese-copper alloy that adopts shunt resistance element assists the shunt heat dissipation as the heat dissipation tooth, when the resistance alloy at shunt circular telegram shunt middle part produced a large amount of heats, a plurality of heat dissipation teeth have great area of contact with the resistance alloy that generates heat, and, a plurality of heat dissipation teeth are almost by indiscriminate way not heat production, the heat dissipation tooth in the middle of the resistance alloy that is close to the shunt can conduct the heat to the copper bar department at surrounding environment and both ends rapidly, for prior art, it can reduce the rising of shunt temperature, the effect of promotion resistance stability has been reached.
Description
Technical Field
The invention relates to the technical field of high-speed rails and motor trains, in particular to a flow divider with radiating teeth.
Background
A shunt is an instrument for measuring direct current and is made according to the principle that when direct current passes through a resistor, voltage is generated across the resistor.
At present, the majority shunt is behind the loading current, because it itself has certain resistance, under the condition of joule effect, the manganese-copper alloy on the shunt can produce a large amount of heats, and current piece formula shunt mostly helps the shunt radiating through both ends welded copper bar, and the heat is partly by manganese-copper alloy surface diffusion to the surrounding environment, and partly through the welding department transmit to the copper bar at both ends on, give off to the surrounding environment through the copper bar again.
Therefore, a shunt with good heat dissipation effect and self-provided heat dissipation teeth is needed.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a shunt with heat dissipation teeth, which solves the technical problem of poor heat dissipation effect caused by the large amount of heat generated by the current shunt, and achieves the purposes of reducing the temperature rise of the shunt and improving the resistance stability of the shunt.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the shunt with the heat dissipation teeth provided by the embodiment of the invention comprises a manganese-copper alloy belt and two copper bars.
The manganese-copper alloy strip comprises resistance alloy, and the end parts of two ends of the resistance alloy are respectively welded with the two copper bars. The front side and the rear side of the resistance alloy are respectively provided with a heat dissipation rack in an integrated forming way.
The heat dissipation rack comprises a plurality of heat dissipation teeth which are closely and uniformly distributed.
Optionally, the device further comprises a support, wherein the support comprises a bottom bracket, an adjusting device and a base plate.
The bottom bracket is a U-shaped bracket. The center of the upper surface of the bottom support is provided with an adjusting cavity. The adjusting device is clamped in the adjusting cavity. The adjusting device can adjust the direction of the base plate on the plane of the support.
The upper part of the base plate is fixedly connected with the two copper bars.
Optionally, the top of the adjustment chamber has a connecting through hole. The connecting through hole is used for providing a channel connected with the substrate.
Optionally, the adjusting device comprises a connecting block, a connecting rod, a hinge fulcrum, an elastic sheet and two hinge rods.
The one end terminal surface and the base plate fixed connection of connecting block, the other end terminal surface of connecting block passes the one end fixed connection of connect hole and connecting rod, and the connecting rod is located and adjusts intracavity portion, and the other end fixedly connected with of connecting rod articulates the fulcrum, and the one end of articulated fulcrum and two articulated levers is articulated mutually, and the other end of two articulated levers articulates the inboard of flexure strip respectively, is used for adjusting opening and closing of flexure strip.
Optionally, the elastic piece comprises a fixed end, two clamping ends and an adjusting end.
The fixed end is positioned right below the hinge pivot. The both ends of stiff end set up the one end of two regulation ends respectively integrated into one piece, the other end of two regulation ends all with the one end fixed connection of two joint ends. The other end of each of the two clamping ends is clamped with a clamping groove, and the clamping grooves are formed in the inner side wall of the adjusting cavity in a circle.
Optionally, the upper surface of the bottom bracket is tightly attached with a rubber gasket.
Optionally, the heights of both ends of the U-shaped bracket protrude out of the height of the copper bar.
Optionally, a groove is formed in the position, located at the connection position of the copper bar and the heat dissipation teeth, of the substrate. A water pipe is arranged in the groove.
Optionally, the distance between every two adjacent heat dissipation teeth is 0.01mm-0.05 mm.
Optionally, the copper bar is a copper bar.
(III) advantageous effects
The invention has the beneficial effects that: according to the current divider with the heat dissipation teeth, the manganese-copper alloy of the resistance element of the current divider is used as the heat dissipation teeth to assist the current divider in heat dissipation, when the resistance alloy in the middle of the current divider is electrified to generate a large amount of heat, the heat dissipation teeth and the heating resistance alloy have a large contact area, the heat dissipation teeth are almost disorderly and do not generate heat, the heat dissipation teeth in the middle of the resistance alloy close to the current divider can rapidly conduct the heat to the surrounding environment and copper bars at two ends, and compared with the prior art, the current divider with the heat dissipation teeth can reduce the temperature rise of the current divider, and achieves the effect of improving the stability of resistance.
Drawings
FIG. 1 is a perspective view of a diverter with heat dissipating teeth according to the present invention;
FIG. 2 is a cross-sectional view of a diverter support with heat dissipating teeth according to the present invention.
[ description of reference ]
1: a manganese-copper alloy strip; 11: a resistive alloy; 12: a heat dissipating tooth;
2: copper bars;
3: a support; 31: a bottom bracket; 32: an adjustment device; 321: connecting blocks; 322: a connecting rod; 323: a hinged fulcrum; 324: an elastic sheet; 324-1: a fixed end; 324-2: a clamping end; 324-3: an adjustment end; 324-4: a card slot; 325: a hinged lever; 33: a substrate; 34: an adjustment chamber; 35: a connecting through hole; 36: a rubber gasket; 37: 3, grooves; 8: a water pipe.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. In which the terms "upper", "lower", etc. are used herein with reference to the orientation of fig. 1.
The shunt with the heat dissipation teeth provided by the embodiment of the invention comprises a manganese-copper alloy belt 1 and two copper bars 2. The manganese-copper alloy strip 1 comprises a resistance alloy 11, and the end parts of the two ends of the resistance alloy 11 are respectively welded with the two copper bars 2. The front and rear sides of the resistance alloy 11 are respectively provided with a heat dissipation rack in an integrated molding manner. The heat dissipation rack comprises a plurality of heat dissipation teeth 12 which are closely and uniformly arranged. Because the manganese-copper alloy that adopts shunt resistance element assists the shunt heat dissipation as heat dissipation tooth 12, when the resistance alloy 11 at shunt circular telegram shunt middle part produced a large amount of heats, a plurality of heat dissipation teeth 12 have great area of contact with the resistance alloy 11 that generates heat, and, a plurality of heat dissipation teeth 12 are almost by indiscriminate way not produced heat, the heat dissipation tooth 12 in the middle of the resistance alloy 11 that is close to the shunt can conduct the heat to 2 departments of copper bar at surrounding environment and both ends rapidly, for prior art, it can reduce the rising of shunt temperature, the effect of promoting resistance stability has been reached.
A flow divider with heat dissipation teeth comprises a manganese-copper alloy belt 1 and two copper bars 2. And welding the copper bars 2 at two ends with the manganese-copper alloy 1 by using electron beam welding. The manganese-copper alloy strip 1 comprises a resistance alloy 11, and the end parts of the two ends of the resistance alloy 11 are respectively welded with the two copper bars 2. The front and rear sides of the resistance alloy 11 are respectively provided with a heat dissipation rack in an integrated molding manner. The heat dissipation rack comprises a plurality of heat dissipation teeth 12 which are closely and uniformly arranged.
The forming of the resistance alloy 11 and the heat dissipation teeth is to punch and form the manganese-copper alloy 1 by using a punch, and the resistance alloy 11 and the plurality of heat dissipation teeth 12 which improve the resistance value of the current divider are punched on the manganese-copper alloy 1 mutually welded with the copper bar 2. The plurality of heat dissipation teeth 12 and the resistance alloy 11 which represents the resistance value of the resistor are made of manganese-copper alloy materials and are integrally formed. Then, the resistance alloy 11 representing the resistance value of the shunt is processed by using a mechanical grinding method, and the resistance value of the shunt is adjusted to meet the standard precision. The mechanical grinding method comprises the steps of detecting the resistance value of the shunt in real time in a mode of electrifying and then collecting voltage, then carrying out mechanical grinding on the 11 parts of the resistance alloy to remove materials, and obtaining the resistance value through a defined formula of the resistance: and R is rho L/S, the resistance value of the resistor can be adjusted to be large, and the resistor repairing action is stopped when the target resistance value is reached.
Further, a support 3 is also included, the support 3 including a bottom bracket 31, an adjusting device 32 and a base plate 33.
The bottom bracket 31 is a "U" shaped bracket. The center of the upper surface of the bottom bracket 31 is provided with an adjusting cavity 34. The adjustment device 32 is snap-fitted into the adjustment chamber 34. The adjustment device 32 can adjust the orientation of the base plate 33 in the plane of the support 3 through 360 degrees. The upper part of the base plate 33 is fixedly connected with the two copper bars 2. The top of the adjustment chamber 34 has a connection through-hole 35. The connection through-hole 35 serves to provide a passage for connection with the substrate 33.
Wherein the support 3 may provide a good working base for the diverter when the diverter is in use. The direction of the shunt can be automatically changed according to the size of the mounting surface for mounting the shunt, and a good mounting effect is provided.
Further, the adjusting device 32 includes a connecting block 321, a connecting rod 322, a hinge fulcrum 323, an elastic sheet 324, and two hinge rods 325.
One end face of the connecting block 321 is fixedly connected with the base plate 33, the other end face of the connecting block 321 penetrates through the connecting through hole 35 to be fixedly connected with one end of the connecting rod 322, the connecting rod 322 is located inside the adjusting cavity 34, the other end of the connecting rod 322 is fixedly connected with a hinge fulcrum 323, the hinge fulcrum 323 is hinged to one ends of two hinge rods 325, and the other ends of the two hinge rods 325 are respectively hinged to the inner sides of the elastic pieces 324 and used for adjusting the opening and closing of the elastic pieces 324.
Further, the elastic piece 324 includes a fixed end 324-1, two clamping ends 324-2 and an adjusting end 324-3.
The fixed end 324-1 is located directly below the hinge fulcrum 323. Two ends of the fixed end 324-1 are respectively integrally provided with one end of two adjusting ends 324-3, and the other end of the two adjusting ends 324-3 is connected with one end of the two clamping ends 324-2. The other end of each of the two clamping ends 324-2 is clamped with a clamping groove 324-4, and the clamping groove 324-4 is formed around the inner side wall of the adjusting cavity 34.
When the shunt is used in an electric circuit and the shunt is required to be mounted and used in a lateral direction, the width of the mounting base surface on which the shunt is mounted may be smaller than the lateral length of the shunt. Firstly, the width direction of the support can be arranged on the installation base surface, then the base plate 33 is lifted upwards, the base plate 33 is lifted upwards through the connecting block 321 to drive the connecting rod 322 to move upwards, the connecting rod 322 drives the hinge fulcrum 323 to rotate and contract inwards, and the hinge fulcrum 323 drives the elastic sheet 324 hinged with the hinge fulcrum 323 to close inwards through the hinge rod 325. At this time, the clamping end 324-2 is released from the clamping relation with the clamping groove 324-4, then the base plate 33 can be rotated until the direction of the shunt above the base plate 33 is adjusted, then the base plate 33 can be pushed downwards, and the base plate 33 opens the elastic piece 324 to be clamped in the clamping groove 324-4 through the transmission of the force of the connecting block 321, the connecting rod 322 and the hinge fulcrum 323, so as to complete the fixation of the shunt on the base plate 33. This ensures the stability of the diverter without affecting the diverter mounting.
Further, the upper surface of the bottom bracket 31 is closely adhered with a rubber gasket 36. In order to ensure the stability of the base plate 33 when it is lifted and lowered and the protection of the bottom bracket 31.
Further, the heights of the two ends of the U-shaped bracket are all protruded out of the height of the copper bar 2. To protect the diverter when it is not in use
Further, the copper bar 2 is cooled by water cooling to dissipate heat. A groove 37 is formed on the base plate 33 at the joint of the copper bar 2 and the heat dissipation teeth 12. A water pipe 38 is provided in the recess 37.
Further, the influence of the tooth-shaped structure of the plurality of heat dissipation teeth 12 on the resistance of the whole shunt is very small, namely, a plurality of large resistors are connected in parallel at two ends of the low resistor, the distance between two adjacent heat dissipation teeth 12 is small, so that the resistance of the large resistor is large, and the influence of the parallel large resistors on the low resistor is basically negligible. The distance between every two adjacent heat dissipation teeth 12 is 0.01mm-0.05 mm.
Further, the copper bar 2 is a red copper bar.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (10)
1. A flow divider with heat dissipation teeth is characterized by comprising a manganese-copper alloy belt (1) and two copper bars (2);
the manganese-copper alloy strip (1) comprises a resistance alloy (11), the end parts of two ends of the resistance alloy (11) are respectively welded with the two copper bars (2), and the front side and the rear side of the resistance alloy (11) are respectively provided with a heat dissipation rack in an integrated forming manner;
the heat dissipation rack comprises a plurality of heat dissipation teeth (12) which are closely and uniformly distributed.
2. The splitter with cooling teeth of claim 1, wherein: the shunt is fixedly connected with the support (3), the shunt is used for fixing the shunt, and the support (3) comprises a bottom bracket (31), an adjusting device (32) and a base plate (33);
the bottom support (31) is a U-shaped support, an adjusting cavity (34) is formed in the center of the upper surface of the bottom support (31), the adjusting device (32) is clamped in the adjusting cavity (34), and the direction of the substrate (33) can be adjusted by the adjusting device (32) on the plane of the support (3) in 360 degrees;
the upper part of the base plate (33) is fixedly connected with the two copper bars (2).
3. The splitter with cooling teeth of claim 2, wherein: the top of the adjusting cavity (34) is provided with a connecting through hole (35), and the connecting through hole (35) is used for providing a channel connected with the base plate (33).
4. The splitter with self-contained cooling teeth as recited in claim 3, further comprising: the adjusting device (32) comprises a connecting block (321), a connecting rod (322), a hinge fulcrum (323), an elastic sheet (324) and two hinge rods (325);
the one end terminal surface of connecting block (321) with base plate (33) fixed connection, the other end terminal surface of connecting block (321) passes connect through hole (35) with the one end fixed connection of connecting rod (322), just connecting rod (322) are located adjust inside chamber (34), the other end fixedly connected with of connecting rod (322) articulates fulcrum (323), articulate fulcrum (323) and two the one end of articulated rod (325) is articulated mutually, two the other end of articulated rod (325) articulates the inboard of flexure strip (324) respectively, is used for adjusting opening and closing of flexure strip (324).
5. The splitter with cooling teeth of claim 4, wherein: the hinge pivot (324) comprises a fixed end (324-1), two clamping ends (324-2) and an adjusting end (324-3);
the fixed end (324-1) is located under the hinged fulcrum (323), two ends of the fixed end (324-1) are respectively provided with one end of each of the two adjusting ends (324-3) in an integrated forming mode, the other ends of the two adjusting ends (324-3) are fixedly connected with one ends of the two clamping ends (324-2), the other ends of the two clamping ends (324-2) are respectively clamped with a clamping groove (324-4), and the clamping groove (324-4) is arranged in a circle on the inner side wall of the adjusting cavity (34).
6. The splitter with cooling teeth of claim 5, wherein: the upper surface of the bottom support (31) is tightly attached with a rubber gasket (36).
7. The splitter with cooling teeth of claim 2, wherein: the heights of the two ends of the U-shaped support are all protruded out of the height of the copper bar (2).
8. The splitter with cooling teeth of claim 2, wherein: a groove (37) is formed in the position, located on the base plate (33), where the copper bar (2) is connected with the radiating teeth (12), and a water pipe (38) is arranged in the groove (37).
9. The splitter with cooling teeth of claim 2, wherein: the distance between every two adjacent heat dissipation teeth (12) is 0.01mm-0.05 mm.
10. The splitter with cooling teeth of claim 1, wherein: the copper bar (2) is a red copper bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010640835.9A CN111751590B (en) | 2020-07-06 | 2020-07-06 | Shunt with heat dissipation teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010640835.9A CN111751590B (en) | 2020-07-06 | 2020-07-06 | Shunt with heat dissipation teeth |
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| Publication Number | Publication Date |
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| CN111751590A true CN111751590A (en) | 2020-10-09 |
| CN111751590B CN111751590B (en) | 2021-06-22 |
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| CN202010640835.9A Active CN111751590B (en) | 2020-07-06 | 2020-07-06 | Shunt with heat dissipation teeth |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962039A (en) * | 2021-01-28 | 2021-06-15 | 国电南瑞三能电力仪表(南京)有限公司 | Processing method for improving self-heating influence performance of current sampling shunt material |
| CN113687142A (en) * | 2021-08-26 | 2021-11-23 | 国网江西省电力有限公司供电服务管理中心 | Direct current electric energy metering module based on shunt |
| CN115290951A (en) * | 2022-08-25 | 2022-11-04 | 蚌埠市双环电子集团股份有限公司 | High-voltage-resistance current detection splitter for new energy automobile battery management system |
| CN116449064A (en) * | 2023-03-12 | 2023-07-18 | 深圳市开步电子有限公司 | Shunt, electric equipment and energy storage equipment thereof |
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| CN113687142B (en) * | 2021-08-26 | 2023-06-23 | 国网江西省电力有限公司供电服务管理中心 | DC electric energy metering module based on current divider |
| CN115290951A (en) * | 2022-08-25 | 2022-11-04 | 蚌埠市双环电子集团股份有限公司 | High-voltage-resistance current detection splitter for new energy automobile battery management system |
| CN116449064A (en) * | 2023-03-12 | 2023-07-18 | 深圳市开步电子有限公司 | Shunt, electric equipment and energy storage equipment thereof |
| CN116449064B (en) * | 2023-03-12 | 2023-10-31 | 深圳市开步电子有限公司 | Shunt, electric equipment and energy storage equipment thereof |
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|---|---|
| CN111751590B (en) | 2021-06-22 |
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Address after: 518000 Units B1 and B2, Building 13, 18th Floor, 19th Floor, 1st Floor, Baoneng Science and Technology Park, Qinghu Community, Longhua Street, Longhua District, Shenzhen City, Guangdong Province Patentee after: C&B ELECTRONICS (S.Z.) Co.,Ltd. Address before: 1001, block a, colorful science and Technology Innovation Park, No.5, Guanle Road, Luhu community, Guanhu street, Longhua District, Shenzhen, Guangdong 518000 Patentee before: C&B ELECTRONICS (S.Z.) Co.,Ltd. |
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