CN216161537U - Large-current precision resistor standard device - Google Patents
Large-current precision resistor standard device Download PDFInfo
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- CN216161537U CN216161537U CN202121968184.2U CN202121968184U CN216161537U CN 216161537 U CN216161537 U CN 216161537U CN 202121968184 U CN202121968184 U CN 202121968184U CN 216161537 U CN216161537 U CN 216161537U
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- standard device
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Abstract
The utility model discloses a high-current precision resistance standard device, which comprises a standard device body, wherein the standard device body is formed by welding and connecting an overload cylinder and a manganin alloy sheet/rod, the manganin alloy sheet/rod and the overload cylinder are in a horizontal shape, the outer side of the standard device body is sleeved with a metal shielding layer and a bakelite insulating plate, insulating compression bolts are arranged above and at two sides of the metal shielding layer, and a bakelite insulating bottom plate is arranged at the bottom of the standard device body. And fills the blank of the domestic heavy current standard.
Description
Technical Field
The utility model relates to the technical field of electronic metering, in particular to a high-current precision resistor standard device and fills the vacancy of domestic similar products.
Background
The resistance standard device can be used for sampling, detecting and calibrating current limiting, backflow and equalizing of power supplies of a battery management system, an electronic complete machine, a communication system and an automatic control system. The resistance standard device is manufactured according to the principle that when direct current passes through the resistance standard device, voltage is generated at two ends of the resistance standard device, and the resistance standard device is low in resistance. When direct current passes through, secondary voltage drop is generated to be displayed by a secondary instrument. The existing resistance standard device has the problems of high temperature rise, large temperature drift, large volume, difficult installation, easy looseness, difficult processing, low precision, small measurement range and the like, and the high-current precision resistance standard device is vacant all the time in China, particularly the high-current resistance standard device needs to purchase foreign products, so that a series of problems of overhigh cost, difficult maintenance and the like are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects and domestic blank problems in the prior art, such as: the existing resistance standard device has the problems of high cost, high temperature rise, large temperature drift, large volume, difficult installation, easy looseness, difficult processing, low precision, small measurement range and the like, and the resistance standard device is blank at home, particularly a high-current resistance standard device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a precision resistance etalon of heavy current, includes the etalon body, overload screw thread through-hole and rings screw hole have been seted up at the both ends of etalon body, rings screw hole's internally mounted eye bolt, the insulating curb plate of bakelite has been cup jointed at the both ends of etalon body, bakelite insulating bottom plate and PVC bottom face tablet have been cup jointed to the bottom of etalon body, etalon body outside cover have metallic shield layer, metallic shield layer's top is connected with gathers terminal, PVC top tablet and openly, side connection has installation insulating bolt, bakelite insulating bottom plate's bottom is provided with four anti-skidding foot pads.
Preferably, a heavy current precision resistor etalon, including two overload cylinders, two overload the cylinder utilize high-frequency induction silver brazing welding to connect as an organic whole through manganin alloy piece stick, manganin alloy piece stick is the cylinder with the overload cylinder, overload cylinder both ends and seted up rings screw hole and overload screw thread through-hole, and fixed threaded hole has been seted up to bottom and both sides, overload cylinder bottom and PVC bottom face tablet, bakelite insulating bottom plate fixed connection, overload cylinder both ends pass the body through-hole fixed mounting on the bakelite insulating curb plate, overload cylinder has seted up the collection screw hole, the collection screw hole passes through bolt and copper conductor and gathers terminal connection.
Preferably, fixing through holes are formed in the top and the side face of the metal shielding layer, the bottom end of the mounting insulation bolt penetrates through the fixing through holes and is connected to the inner surface of a fixing threaded hole in the bakelite insulation side plate, the front face of the metal shielding layer is provided with a collecting through hole, and the front face, the back face and the side face of the metal shielding layer are provided with ventilation holes.
Preferably, the collecting binding post penetrates through the collecting through hole in the metal shielding layer and the collecting through hole in the PVC upper surface plate and is fixedly connected with the collecting point fixing through hole in the bakelite insulating side plate.
Preferably, the bottom of the bakelite insulation bottom plate is provided with a groove, a fixing through hole and a fixing threaded hole, and the top of the anti-skid foot pad is installed at the bottom of the bakelite insulation bottom plate in a penetrating manner.
Preferably, the bakelite insulation side plate penetrates through the fixed through groove on the PVC bottom face plate through the convex groove, is fixed inside the groove on the bakelite insulation bottom plate, and is connected with the fixed threaded hole on the electrician insulation side plate through the fixed through hole on the bakelite insulation bottom plate by using the fixing bolt.
Preferably, the overload cylinder penetrates through the bakelite insulation side plate and is fixed inside a body through hole in the bakelite insulation side plate through a bolt.
Preferably, the etalon body, the lifting eye bolt, the bakelite insulation side plate, the metal shielding layer, the PVC upper plate, the collection binding post, the PVC lower plate, the bakelite insulation bottom plate, the anti-skid foot pad and the installation insulation bolt are all embedded in a tight fit mode.
Preferably, the overload cylinder is red copper material, and is installed for being the cylinder with manganese-copper alloy piece/stick, be the circular cone cylinder in the middle of the overload cylinder with the resistance body is cask body shape structure, and one end is parallel or mill the level perpendicularly to adopt four ends to connect the overload cylinder, be suitable for the precision measurement of electric current.
Preferably, the vent holes are round holes, square holes or irregular opening holes.
Preferably, the lifting eye bolt is connected with a lifting eye threaded hole in the standard device body, and the resistance standard device is suitable for preventing the resistance standard device from being damaged when the resistance standard device is moved or carried.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model has the advantages of long-time continuous heavy current work, low power consumption, low temperature rise, small temperature drift coefficient, vibration resistance, strong impact resistance and anti-interference performance, high precision, high linearity and the like, ensures the precision, stability and tightness of measurement, can completely replace the traditional resistance standard device, the direct current standard resistor, the direct current standard shunt and the Hall sensor, can completely replace the similar products abroad and fill the domestic vacancy.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the structure of the present invention;
FIG. 3 is a schematic diagram of the body structure of the high-current precision resistor etalon according to the present invention.
In the figure: 1. a etalon body; 101. an overload column; 102. manganese copper alloy sheet/rod; 103. a threaded hole of the lifting ring; 104. collecting a threaded hole; 105. an overload threaded through hole; 106. a conical cylinder; 107. fixing the threaded hole; 2. an eye bolt; 3. a bakelite insulation side plate; 301. the collection point fixing through hole; 302. fixing the threaded hole; 303. a body through hole; 304. a convex groove; 4. a metal shielding layer; 401. collecting through holes; 402. a fixing through hole; 403. a vent hole; 5. PVC upper brand; 501. collecting through holes; 6. Collecting binding posts; 7. PVC bottom nameplate; 701. fixing the through groove; 702. a fixing through hole; 8. a bakelite insulating base plate; 801. a groove; 802. a fixing through hole; 803. fixing the threaded hole; 9. anti-skid foot pads; 10. and installing an insulating bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, a high-current precision resistor standard device comprises a standard device body 1, wherein two overload cylinders 101 are connected to two ends of the standard device body 1, the two overload cylinders 101 are made of red copper, the overload cylinders 101 and a manganin alloy sheet/rod 102 are connected into a whole by high-frequency induction silver brazing welding, the overload cylinders 101 and the manganin alloy sheet/rod 102 are cylindrical, one ends of the overload cylinders are parallel or vertically milled and are flat for connecting a connecting wire or a connecting wire bank, and the middle of the overload cylinders is a conical cylinder 106; the overload column 101 is provided with an overload threaded through hole 105, a hanging ring threaded hole 103, a collection threaded hole 104 and a fixing threaded hole 107; the hoisting ring threaded hole 103 is tightly connected with the hoisting ring bolt 2, the collecting threaded hole 104 is connected with the collecting binding post 6 through a copper wire and a bolt, two ends of the overload column body 101 penetrate through the body through hole 303 on the bakelite insulation side plate 3, and the overload column body is connected with the fixing threaded hole 107 on the standard device body 1 through the fixing threaded hole 302 on the bakelite insulation side plate 3 by using the installation insulation bolt 10.
The bottom of the bakelite insulation side plate 3 is provided with a convex groove 304, runs through the PVC bottom surface plate 7 to be connected with the bakelite insulation bottom plate 8, and runs through the bakelite insulation bottom plate 8 by utilizing a mounting insulation bolt 10 to be connected.
And the lower bolt of the collecting binding post 6 penetrates through the collecting point fixing through hole 301 on the PVC upper plate 5, the metal shielding layer 4 and the bakelite insulation side plate 3 to be fixedly installed and is connected with the collecting threaded hole 104 on the standard body 1 through a copper wire.
PVC bottom face tablet 7 and bakelite insulation bottom plate 8 have been cup jointed to the bottom of etalon body 1, lifting bolt 2, bakelite insulation curb plate 3, metallic shield 4, PVC top tablet 5, gather terminal 6, PVC bottom face tablet 7, bakelite insulation bottom plate 8, anti-skidding callus on the sole 9, all adopt to inlay the tight fit with installation insulation bolt 10, not only make the whole outward appearance of resistance etalon more clean and tidy, pleasing to the eye, and the vibration resistance of resistance etalon has been improved, shock resistance, locking ability, reduce external magnetic field and disturb, measurement accuracy and stability have been guaranteed, the user can install fast and can use at will when using, transport and removal.
Four anti-skidding foot pads 9 are arranged at the bottom of the bakelite insulation base plate 8, a groove 801, a fixing through hole 802 and a fixing threaded hole 803 are formed in the bakelite insulation base plate 8, and the convex groove 304 is installed inside the groove 801.
The utility model has the advantages of long-time continuous heavy current work, low power consumption, low temperature rise, small temperature drift coefficient, vibration resistance, strong impact resistance and anti-interference performance, high precision, high linearity and the like, ensures the precision, stability and tightness of measurement, can completely replace the traditional resistance standard device, the direct current standard resistor, the direct current standard shunt and the Hall sensor, replaces the similar products abroad, and can fill the domestic blank.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (9)
1. The utility model provides a precision resistance etalon of heavy current, includes etalon body (1), its characterized in that, overload screw thread through-hole (105) and rings screw hole (103) have been seted up at the both ends of etalon body (1), internally mounted eye bolt (2) of rings screw hole (103), insulation curb plate (3) of bakelite have been cup jointed at the both ends of etalon body (1), insulation bottom plate (8) of bakelite and PVC bottom face tablet (7) have been cup jointed to the bottom of etalon body (1), etalon body (1) outside cover have metallic shield layer (4), the top of metallic shield layer (4) is connected with gathers terminal (6), PVC top tablet (5) and openly, the side connection has installation insulation bolt (10), the bottom of insulation bottom plate of bakelite (8) is provided with four anti-skidding foot pads (9).
2. A high-current precision resistance standard device according to claim 1, wherein the standard device body (1) comprises two overload cylinders (101), the two overload cylinders (101) and the MnCu alloy sheet/bar (102) are integrally connected by high-frequency induction silver brazing welding, the MnCu alloy sheet/bar (102) and the overload cylinders (101) are cylindrical, the overload cylinders (101) are provided with hanging ring threaded holes (103) and overload threaded through holes (105) at two ends, fixed threaded holes (107) at the bottom and two sides, the bottom of the overload cylinders (101) and the PVC bottom surface plate (7) are fixedly connected with the bakelite insulating bottom plate (8), the two ends of the overload cylinders (101) are fixedly installed by penetrating through the body through holes (303) on the bakelite insulating side plate (3), the overload cylinders (101) are provided with collection threaded holes (104), the collection threaded hole (104) is connected with the collection binding post (6) through a bolt and a copper wire.
3. A high-current precision resistance standard device according to claim 1, wherein the top and the side of the metal shielding layer (4) are provided with fixing through holes (402), the bottom end of the mounting insulation bolt (10) penetrates through the fixing through holes (402) and is connected to the inner surface of the fixing threaded hole (302) on the bakelite insulation side plate (3), the front surface of the metal shielding layer (4) is provided with a collecting through hole (401), and the front surface, the back surface and the side of the metal shielding layer (4) are provided with vent holes (403).
4. A high-current precision resistance standard device according to claim 3, wherein the collecting binding post (6) penetrates through the collecting through hole (401) on the metal shielding layer (4) and the collecting through hole (501) on the PVC upper plate (5) and is fixedly connected with the collecting point fixing through hole (301) on the bakelite insulation side plate (3).
5. A high-current precision resistance standard device according to claim 2, wherein the bottom of the bakelite insulation bottom plate (8) is provided with a groove (801), a fixing through hole (802), a fixing threaded hole (803), and the top of the anti-skid foot pad (9) is installed at the bottom of the bakelite insulation bottom plate (8) in a penetrating manner.
6. A high-current precision resistance standard device according to claim 2, wherein the bakelite insulation side plate (3) is fixed inside the groove (801) on the bakelite insulation bottom plate (8) through the fixing through groove (701) on the PVC bottom face plate (7) by the convex groove (304), and is connected with the fixing threaded hole (302) on the bakelite insulation side plate (3) by the fixing bolt through the fixing through hole (802) on the bakelite insulation bottom plate (8), and the overload cylinder (101) is fixed inside the body through hole (303) on the bakelite insulation side plate (3) by the bolt.
7. A high-current precision resistance standard device according to claim 1, wherein the standard device body (1), the eyebolt (2), the bakelite insulation side plate (3), the metal shielding layer (4), the PVC upper face plate (5), the collection binding post (6), the PVC bottom face plate (7), the bakelite insulation bottom plate (8), the anti-skid foot pad (9) and the installation insulation bolt (10) are all embedded and tightly matched.
8. A high-current precision resistance standard device according to claim 2, wherein the overload cylinder (101) is made of red copper, the manganin alloy sheet/rod (102) is horizontally installed and is a cylinder, the middle part of the overload cylinder (101) is a conical cylinder (106), the standard device body (1) is in a cylindrical structure, one end of the standard device body is parallel or vertically milled, four ends of the standard device body are connected, and the standard device is suitable for precision measurement of current.
9. A high current precision resistor etalon according to claim 3 wherein the vent holes (403) are round, square or irregular openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121968184.2U CN216161537U (en) | 2021-08-20 | 2021-08-20 | Large-current precision resistor standard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121968184.2U CN216161537U (en) | 2021-08-20 | 2021-08-20 | Large-current precision resistor standard device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216161537U true CN216161537U (en) | 2022-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121968184.2U Active CN216161537U (en) | 2021-08-20 | 2021-08-20 | Large-current precision resistor standard device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216161537U (en) |
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2021
- 2021-08-20 CN CN202121968184.2U patent/CN216161537U/en active Active
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