CN218159875U

CN218159875U - Novel voltage transformer

Info

Publication number: CN218159875U
Application number: CN202221643816.2U
Authority: CN
Inventors: 王莹; 邸兴宇; 王聪; 王董; 耿辰; 赵微
Original assignee: HEBEI SHENKE ELECTRONICS CO Ltd
Current assignee: HEBEI SHENKE ELECTRONICS CO Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-12-27
Anticipated expiration: 2032-06-29

Abstract

The utility model belongs to the mutual-inductor field, concretely relates to novel voltage transformer. The utility model provides a novel voltage transformer, is equipped with the open-ended casing and is located the inside magnetic core of casing including one side, the winding has the primary wire to arrange and the secondary wire is arranged on the magnetic core, the primary wire is arranged and is connected with a stitch, the secondary wire is arranged and is connected with the secondary stitch, add resistance in the casing, resistance series connection is arranged between the detection stitch of being connected with the primary wire and a stitch. The utility model provides a novel voltage transformer adopts and designs at the inside mode that adds resistance of mutual-inductor casing, when the customer is measuring big voltage heavy current circuit, need not additionally to add resistance outside the mutual-inductor casing, facilitates the use.

Description

Novel voltage transformer

Technical Field

The utility model belongs to the mutual-inductor field, concretely relates to novel voltage transformer.

Background

With the rapid development of economy, the market demand is continuously increased, and the technology of the mutual inductor is updated. The voltage transformer is an instrument for transforming voltage, and the input end of the existing small-current voltage transformer is connected with an external divider resistor, so that the voltage obtained by the voltage transformer is smaller. When the primary side is high-voltage and high-current, the high-voltage and high-current circuit cannot be directly connected with a low-current voltage transformer, if the high-voltage and high-current circuit is connected with the low-current voltage transformer, a divider resistor is needed to connect the high-voltage and high-current circuit, and when an external circuit cannot be changed, the built-in resistor type low-current voltage transformer can realize the function.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that exists among the above-mentioned prior art, the utility model provides a novel voltage transformer adopts the mode of adding resistance inside the mutual-inductor casing to design, when the customer is measuring big voltage heavy current circuit, need not additionally to add resistance outside the mutual-inductor casing, facilitate the use, be provided with electric separation plate in addition between magnetic core and resistance, separate the casing internal portion for magnetic core chamber and resistance chamber, prevent that the insulator of a linear array and secondary line array from damaging the back, take place the touching between linear array and the resistance, improved the security performance of mutual-inductor.

The utility model discloses a specific technical scheme be:

the utility model provides a novel voltage transformer, is equipped with the open-ended casing and is located the inside magnetic core of casing including one side, the winding has the primary wire to arrange and the secondary wire is arranged on the magnetic core, the primary wire is arranged and is connected with a stitch, the secondary wire is arranged and is connected with the secondary stitch, add resistance in the casing, resistance series connection is arranged between the detection stitch of being connected with the primary wire and a stitch.

An electrical isolation plate is arranged between the magnetic core and the resistor, and the electrical isolation plate divides the inner part of the shell into a magnetic core cavity and a resistor cavity.

The height of the electric isolation plate is shallower than the depth of the shell.

The bottom of the shell is additionally provided with a detachable bottom cover, a U-shaped guide rail is arranged on the inner side face of an opening in the bottom of the shell, a sliding groove matched with the guide rail is formed in the bottom cover, and the bottom cover is detachably connected with the opening in the shell through the insertion fit formed by the guide rail and the sliding groove.

The magnetic core is characterized in that a raised positioning block is arranged inside the shell, the positioning block is positioned in the center of the magnetic core, and the position of the magnetic core is determined by means of the positioning block.

The bottom still is provided with the inspection hole, be provided with the detection stitch in the inspection hole, it connects between resistance and primary line row to detect the stitch.

The utility model has the advantages that:

1. the utility model discloses, adopt and design at the inside mode that adds resistance of mutual-inductor casing, when the customer is measuring big voltage heavy current circuit, need not additionally to add resistance outside the mutual-inductor shell, facilitate the use, be provided with the electric isolation board between magnetic core and resistance in addition, separate the casing internal portion for magnetic core chamber and resistance chamber, prevent that the insulator that the line was arranged and secondary line was arranged from damaging the back, take place the touching between line row and the resistance, improved the security performance of mutual-inductor.

2. The utility model discloses, the electrical isolation board height of adoption is shallow in the mutual-inductor casing degree of depth, the mutual-inductor is in the assembly back, need to pour into resin and curing agent into to casing inside, in order to play insulation, the effect of fixed part, when pouring into resin and curing agent into to casing inside, after the resin and the curing agent in magnetic core chamber or resistance chamber are filled with, because the electrical isolation board height is shallow in the mutual-inductor casing degree of depth, resin and curing agent can be automatic overflow to another cavity, after resin and curing agent are all filled with in magnetic core chamber and resistance chamber, the plane of two cavities is at the level, pleasing to the eye effect has been reached in the optimization process.

3. The utility model discloses, the bottom adopts pull formula design, and when the mutual-inductor assembles, can assemble stitch and bottom earlier, then the bottom is connected with the casing with the help of the guide rail again, and it is more convenient to assemble, adopts the design of U type spout and guide rail in addition, makes the bottom be connected more closely with the casing, prevents that the resin from spilling over.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic view of the three-dimensional structure of the present invention.

1. The device comprises a shell, 2, a magnetic core, 3, a primary pin, 4, a secondary pin, 5, a resistor, 6, an electrical isolation plate, 7, a bottom cover, 8, a guide rail, 9, a positioning block, 10 and a detection pin.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and specific embodiments:

concrete embodiment is shown in fig. 1 and fig. 2, the utility model relates to a novel voltage transformer, be equipped with open-ended casing 1 and be located casing 1 inside magnetic core 2 including one side, the winding has primary wire to arrange and secondary wire to arrange on the magnetic core 2, primary wire is arranged and is connected with a stitch 3, secondary wire is arranged and is connected with secondary stitch 4, resistance 5 has been increased in the casing 1, resistance 5 establishes ties between stitch 10 and the stitch 3 that primary wire is arranged and is connected.

As shown in fig. 1 and 2, in this embodiment, a mode of adding a resistor 5 inside a transformer housing 1 is adopted for design, the resistor 5 is connected in series between a primary pin 3 and a primary line bank, and when a customer is measuring a large-voltage large-current circuit, the resistor 5 does not need to be additionally added outside the transformer housing, so that the transformer housing is convenient to use.

Further, as shown in fig. 1 and 2, an electrical isolation plate 6 is disposed between the magnetic core 2 and the resistor 5, the electrical isolation plate 6 separates the inside of the housing 1 into a magnetic core cavity and a resistor cavity, the electrical isolation plate 6 is disposed between the magnetic core 2 and the resistor 5, the inside of the housing 1 is separated into a magnetic core cavity and a resistor cavity, and after the insulators of the primary wire row and the secondary wire row are damaged, the wire row and the resistor 5 are prevented from touching each other, and the electrical isolation plate 6 plays a role in electrical isolation.

Further, as shown in fig. 1 and fig. 2, the height of the electrical isolation board 6 is less than the depth of the housing 1, after the mutual inductor is assembled, black epoxy resin and black resin curing agent are required to be poured into the housing 1 to play a role of insulating and fixing parts, when resin and curing agent are poured into the housing 1, after the magnetic core cavity or the resistance cavity is filled with resin and curing agent, because the depth of the electrical isolation board 6 is less than the depth of the mutual inductor housing 1, the resin and curing agent can automatically overflow to the other cavity, and after the magnetic core cavity and the resistance cavity are filled with resin and curing agent, the planes of the two cavities are horizontal, thereby achieving the aesthetic effect while optimizing the process.

Further, as shown in fig. 1 and 2, a detachable bottom cover 7 is further disposed at the bottom of the housing 1, a U-shaped guide rail 8 is disposed on an inner side surface of the bottom opening of the housing 1, a sliding groove matched with the guide rail 8 is disposed on the bottom cover 7, and the bottom cover 7 is detachably connected with the opening of the housing 1 by means of the insertion fit formed by the guide rail 8 and the sliding groove. Bottom 7 and casing 1 adopt pull formula design, and when the mutual-inductor assembly, can pass through the through-hole with bottom 7 assembly with each stitch earlier, then be connected bottom 7 with the help of guide rail 8 and casing 1, make the assembly more convenient, adopt the design of U type guide rail 8 and spout in addition, make bottom 7 be connected inseparabler with casing 1, prevent that resin and curing agent from spilling over.

Further, as shown in fig. 1 and 2, the inside bellied locating piece 9 that is equipped with of casing 1, locating piece 9 is located the 2 centers of magnetic core, the position is confirmed with the help of locating piece 9 to magnetic core 2, and the inside locating piece 9 that is equipped with of casing 1 when the assembly, guarantees that locating piece 9 is located the centre of a circle department of magnetic core 2, can confirm that magnetic core 2 mounted position is accurate.

Further, as shown in fig. 1 and fig. 2, the bottom 7 is provided with a detection hole, be provided with in the detection hole and detect stitch 10, detect stitch 10 and connect between resistance 5 and a linear array, the mutual inductor need carry out the performance detection after the assembly, when using mutual inductor check gauge to test mutual inductor winding performance, need use detection stitch 10 to replace and detect with the first stitch 3 of resistance 5 series connection, avoid resistance 5 to influence the testing result, guarantee the accuracy of testing result, realize automated inspection, and then improve detection efficiency. After the performance of the mutual inductor is detected to be qualified, the detection pin 10 is cut off along the bottom cover 7, and the problem that a result is wrong and even an instrument is damaged due to wrong pins in the use process of a customer is solved.

Claims

1. The utility model provides a novel voltage transformer, includes that one side is equipped with open-ended casing (1) and is located inside magnetic core (2) of casing (1), the winding has primary wire to arrange and secondary wire to arrange on magnetic core (2), primary wire is arranged and is connected with stitch (3), secondary wire is arranged and is connected with secondary stitch (4), its characterized in that, increase resistance (5) in casing (1), resistance (5) are established ties and are being connected between detection stitch (10) and stitch (3) with primary wire row.

2. The novel voltage transformer according to claim 1, characterized in that an electrical isolation plate (6) is arranged between the magnetic core (2) and the resistor (5), and the electrical isolation plate (6) separates the interior of the shell (1) into a magnetic core cavity and a resistor cavity.

3. A new type of voltage transformer according to claim 2, characterized by the fact that the height of said electric insulation board (6) is shallower than the depth of the shell (1).

4. The novel voltage transformer according to claim 1, characterized in that a detachable bottom cover (7) is further arranged at the bottom of the shell (1), a U-shaped guide rail (8) is arranged on the inner side surface of the opening at the bottom of the shell (1), a sliding groove matched with the guide rail (8) is arranged on the bottom cover (7), and the bottom cover (7) is detachably connected with the opening of the shell (1) by means of the insertion fit formed by the guide rail (8) and the sliding groove.

5. The novel voltage transformer according to claim 1, characterized in that a raised positioning block (9) is arranged inside the housing (1), the positioning block (9) is located at the center of the magnetic core (2), and the magnetic core (2) is positioned by means of the positioning block (9).

6. The novel voltage transformer according to claim 4, characterized in that the bottom cover (7) is further provided with a detection hole, a detection pin (10) is arranged in the detection hole, and the detection pin (10) is connected between the resistor (5) and the primary wire row.