CN211293008U

CN211293008U - Novel anti-interference manganin shunt

Info

Publication number: CN211293008U
Application number: CN201922222607.5U
Authority: CN
Inventors: 刘大兵; 刘洋; 李隐宪
Original assignee: Jiangsu Jingyi Electrical Appliance Co ltd
Current assignee: Jiangsu Jingyi Electrical Appliance Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-08-18
Anticipated expiration: 2029-12-12

Abstract

The utility model belongs to the shunt field, in particular to an anti-interference novel manganin shunt, which comprises a copper body (1), a manganin body (2), a wire binding post (3), a wire (4), a sampling wire binding post (5), a sampling wire (6), a mounting hole (7) and a antimagnetic sleeve (8); the utility model discloses a novel manganin shunt prevents that power frequency magnetic field's interference ability is strong, and the instrument measurement accuracy who uses this shunt to make is high.

Description

Novel anti-interference manganin shunt

Technical Field

The utility model belongs to the shunt field specifically discloses an anti-interference novel manganin shunt.

Background

The shunt is an instrument for measuring DC current, and is made up according to the principle that when the DC current passes through resistor, voltage is produced at two ends of resistor, and can be extensively used for enlarging current-measuring range of instrument. When the existing manganin current divider is interfered by a magnetic field from the outside, microvolt signals are not accurately sampled, even when no current exists, signals are arranged at two ends of a sampling line if the magnetic field from the outside interferes, and therefore metering of an ammeter is not accurate.

SUMMERY OF THE UTILITY MODEL

To the above insufficiency, the utility model discloses an anti-interference novel manganin shunt.

The technical scheme of the utility model as follows:

an anti-interference novel manganin shunt comprises a copper body, a manganin body, a lead wiring terminal, a lead, a sampling line wiring terminal, a sampling line, a mounting hole and an anti-magnetic sleeve; the red copper body and the manganin body are both in a thick sheet shape; the red copper bodies are symmetrically welded on the left side and the right side of the manganese copper body; the thickness of the red copper body is larger than that of the manganese copper body, the bottom of the manganese copper body is flush with the red copper body, and a groove is formed in the part, lower than the red copper body, of the top of the manganese copper body; the lead wiring terminal is positioned on the side surface of the flaky purple copper body; the two sampling line binding posts are positioned on the front surface of the flaky purple copper body and are symmetrically arranged relative to the groove; the lead is connected to the lead wiring terminal and is parallel to the front surface of the red copper body; the sampling lines are connected to the sampling line binding posts, spirally wound together, sleeved in the antimagnetic sleeve and perpendicular to the front surface of the red copper body; the two mounting holes penetrate through the red copper body and are symmetrically arranged relative to the groove. When in work: assembling the shunt in place through the mounting hole, and connecting a load to a lead terminal through a lead; respectively connecting the positive and negative sampling wires to the sampling wire binding posts, and after connection, spirally winding the positive and negative sampling wires and then installing the positive and negative sampling wires into the antimagnetic sleeve, wherein the antimagnetic sleeve is perpendicular to the lead and is not in the same plane; the measuring meter converts the voltage drop between the terminals of the sampling line into a current value.

Furthermore, above-mentioned novel anti-interference manganin shunt, the inside of antimagnetic sleeve pipe is insulating material, and the outside is the aluminum alloy material. The antimagnetic sleeve is arranged, so that the antimagnetic effect is good.

Furthermore, the resistivity of the red copper body of the novel anti-interference manganin shunt is less than or equal to 0.018 omega mm at 20 DEG C²And/m. The resistivity is small, and the detection accuracy is high.

Furthermore, according to the novel anti-interference manganin shunt, the thickness of the red copper body is 1.5 times that of the manganin body. Can save the using amount of the manganese and the copper.

Furthermore, the aperture of the installation hole is one half of the depth of the installation hole. The installation is more firm because of the larger installation hole.

Furthermore, the anti-interference novel manganin shunt is applied to measuring instruments.

Furthermore, the anti-interference novel manganin shunt is applied to an ammeter.

According to the above technical scheme, the utility model discloses following beneficial effect has: the utility model has the advantages that the sampling line is spirally wound and then is arranged in the antimagnetic sleeve, and the sampling line and the conducting wire are arranged in different planes, so that the power frequency magnetic field can be well resisted, and the sampling conducting wire and the load conducting wire are further vertically arranged, so that the power frequency magnetic field is mutually inefficient, and the antimagnetic effect is better; further, the utility model discloses reduce the body thickness of manganin for the copper body two-thirds, reduced the quantity of the manganin body, had the cost advantage when mass production.

Drawings

FIG. 1 is a schematic front view of a manganin shunt according to example 1-2;

FIG. 2 is a schematic side view of a manganin shunt according to example 1-2;

wherein: the device comprises a 1 red copper body, a 2 manganese copper body, a 3 conductor wiring terminal, a 4 conductor, a 5 sampling line wiring terminal, a 6 sampling line, a 7 mounting hole, an 8 antimagnetic sleeve and a 21 groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the 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, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

The novel anti-interference manganin shunt shown in the figure 1-2 comprises a copper body 1, a manganin body 2, a lead wiring terminal 3, a lead 4, a sampling line wiring terminal 5, a sampling line 6, a mounting hole 7 and an antimagnetic sleeve 8; the red copper body 1 and the manganese copper body 2 are both in a thick sheet shape; the red copper body 1 is symmetrically welded on the left side and the right side of the manganese copper body 2; the thickness of the red copper body 1 is larger than that of the manganese copper body 2, the bottom of the manganese copper body 2 is flush with that of the red copper body 1, and a groove 21 is formed in the part, lower than the red copper body 1, of the top of the manganese copper body 2; the lead wiring terminal 3 is positioned on the side surface of the sheet-shaped red copper body 1; two sampling line binding posts 5 are arranged on the front surface of the flaky red copper body 1 and are symmetrically arranged relative to the groove 21; the lead 4 is connected to the lead binding post 3, and the lead 4 is parallel to the front surface of the red copper body 1; the sampling line 6 is connected to the sampling line binding post 5, and the sampling lines 6 are spirally wound together, sleeved in the antimagnetic sleeve 8 and perpendicular to the front surface of the red copper body 1; two mounting holes 7 penetrate through the red copper body 1 and are symmetrically arranged relative to the groove 21.

When in work: the shunt is assembled in place through the mounting hole 7, and the load is connected to the wire terminal 3 through the wire 4; the positive and negative sampling lines 6 are respectively connected to the sampling line binding post 5, and after the connection, the positive and negative sampling lines 6 are spirally wound and then installed in the antimagnetic sleeve 8, and the antimagnetic sleeve 8 is vertical to the lead 4 and is not in the same plane; the measurement meter converts the voltage drop between the sampling line terminals 5 into a current value.

Example 2

The novel anti-interference manganin shunt shown in the figure 1-2 comprises a copper body 1, a manganin body 2, a lead wiring terminal 3, a lead 4, a sampling line wiring terminal 5, a sampling line 6, a mounting hole 7 and an antimagnetic sleeve 8; the red copper body 1 and the manganese copper body 2 are both in a thick sheet shape; the red copper body 1 is symmetrically welded on the left side and the right side of the manganese copper body 2; the thickness of the red copper body 1 is larger than that of the manganese copper body 2, the bottom of the manganese copper body 2 is flush with that of the red copper body 1, and a groove 21 is formed in the part, lower than the red copper body 1, of the top of the manganese copper body 2; the lead wiring terminal 3 is positioned on the side surface of the sheet-shaped red copper body 1; two sampling line binding posts 5 are arranged on the front surface of the flaky red copper body 1 and are symmetrically arranged relative to the groove 21; the lead 4 is connected to the lead binding post 3, and the lead 4 is parallel to the front surface of the red copper body 1; the sampling line 6 is connected to the sampling line binding post 5, and the sampling lines 6 are spirally wound together, sleeved in the antimagnetic sleeve 8 and perpendicular to the front surface of the red copper body 1; two mounting holes 7 penetrate through the red copper body 1 and are symmetrically arranged relative to the groove 21; preferably, the inner part of the antimagnetic sleeve 8 is made of an insulating material, and the outer part of the antimagnetic sleeve is made of an aluminum alloy material; in particular, the resistivity of the red copper body 1 is less than or equal to 0.018 omega mm at 20 DEG C²(ii)/m; further, the thickness of the red copper body 1 is 1.5 times that of the manganese copper body 2; further, the diameter of the mounting hole 7 is half of the depth thereof.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention can not be limited thereby, and the simple equivalent changes and modifications made according to the claims and the utility model also belong to the protection scope of the present invention.

Claims

1. An anti-interference novel manganin shunt is characterized by comprising a copper body (1), a manganin body (2), a lead wiring terminal (3), a lead (4), a sampling line wiring terminal (5), a sampling line (6), a mounting hole (7) and an antimagnetic sleeve (8); the red copper body (1) and the manganese copper body (2) are both in a thick sheet shape; the red copper body (1) is symmetrically welded on the left side and the right side of the manganese copper body (2); the thickness of the red copper body (1) is larger than that of the manganese copper body (2), the bottom of the manganese copper body (2) is flush with the red copper body (1), and a groove (21) is formed in the part, lower than the red copper body (1), of the top of the manganese copper body (2); the lead binding post (3) is positioned on the side surface of the sheet-shaped red copper body (1); the two sampling line binding posts (5) are positioned on the front surface of the flaky red copper body (1) and are symmetrically arranged relative to the groove (21); the lead (4) is connected to the lead binding post (3), and the lead (4) is parallel to the front surface of the red copper body (1); the sampling line (6) is connected to the sampling line binding post (5), and the sampling lines (6) are mutually spirally wound together, sleeved in the antimagnetic sleeve (8) and perpendicular to the front surface of the red copper body (1); the two mounting holes (7) penetrate through the red copper body (1) and are symmetrically arranged relative to the groove (21).

2. The novel anti-interference manganin shunt according to claim 1, characterized in that the inner part of the antimagnetic sleeve (8) is made of insulating material, and the outer part is made of aluminum alloy material.

3. The novel anti-interference manganin shunt according to claim 1, wherein the resistivity of the red copper body (1) is less than or equal to 0.018 Ω -mm at 20 ℃²/m。

4. The novel anti-interference manganin shunt according to claim 1, wherein the thickness of the red copper body (1) is 1.5 times that of the manganin body (2).

5. The new manganin shunt with immunity to interference according to claim 1, characterized in that the diameter of the mounting hole (7) is half its depth.