CN217239198U - Open-close type current transformer capable of detecting voltage - Google Patents
Open-close type current transformer capable of detecting voltage Download PDFInfo
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- CN217239198U CN217239198U CN202220412804.2U CN202220412804U CN217239198U CN 217239198 U CN217239198 U CN 217239198U CN 202220412804 U CN202220412804 U CN 202220412804U CN 217239198 U CN217239198 U CN 217239198U
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Abstract
The utility model discloses an open-close type current transformer capable of considering voltage detection, which comprises an upper shell, a lower shell, a pricking pin module and a line pressing module, wherein an upper iron core is arranged in the upper shell, a lower iron core is arranged in the lower shell, a winding framework is sleeved on the lower iron core, an induction coil is wound on the winding framework, the middle part of the lower end of the upper shell is arched upwards to form an upwards arched part, and the middle part of the upper end of the lower shell is recessed downwards to form a downwards recessed part; the line pressing module comprises a line pressing beam fixed on the upper part of the lower shell through a compression screw, and the line pressing beam is bridged above the downward concave part of the lower shell and forms a line pressing space with the downward concave part of the lower shell; the pricking pin module comprises a needle seat fixed in the lower shell and a conductive pricking pin arranged on the needle seat, a pricking pin through hole is formed in the downward concave part of the lower shell, and a sharp piercing part of the conductive pricking pin upwards penetrates through the pricking pin through hole to enter the wire pressing space. The utility model discloses can compromise the measurement of voltage when realizing current measurement.
Description
Technical Field
The utility model relates to a current transformer technical field, concretely relates to can compromise open-close type current transformer of voltage detection.
Background
The current transformer is an instrument for realizing current measurement by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle.
The traditional current transformer is a closed current transformer, so that the measurement operation is inconvenient and the safety is poor. With the development of power automation technology, the wiring of the power department in the relay protection secondary circuit is more and more dense, and people need to detect the current signal of one wire in the dense wire turns more and more. Therefore, the open-close type current transformer is provided, the tested line can be not required to be disconnected by using the open-close type current transformer, the use is convenient, and the application is wide.
However, the conventional open-close type current transformer in the prior art can only be used for measuring current, and cannot measure voltage. In many applications, however, there is a need to detect both the current and the voltage of the power line in a power distribution cabinet.
Therefore, there is a need for an improved structure of the existing open-close type current transformer to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an open-close type current transformer that can compromise voltage detection aims at realizing the measurement that can compromise voltage when the current measurement. The specific technical scheme is as follows:
an open-close type current transformer capable of considering voltage detection comprises an upper shell assembly, a lower shell assembly, a puncture needle module arranged on the lower shell assembly and a line pressing module connected to the upper part of the lower shell assembly, wherein the upper shell assembly comprises an upper shell and an upper iron core arranged in the upper shell, the lower shell assembly comprises a lower shell, a lower iron core arranged in the lower shell, a winding framework sleeved on the lower iron core and an induction coil wound on the winding framework, the middle part of the lower end of the upper shell is arched upwards, the middle part of the upper end of the lower shell is recessed downwards, the upper shell and the lower shell are assembled and connected in an up-down mode, and a power line detection hole is formed between the upwards arched part of the upper shell and the downward recessed part of the lower shell; the line pressing module comprises a line pressing beam fixed on the upper part of the lower shell through a compression screw, and the line pressing beam is connected above the downward concave part of the lower shell in a bridging manner and forms a line pressing space with the downward concave part of the lower shell; the pricking pin module comprises a needle seat fixed in the lower shell and a conductive pricking pin arranged on the needle seat, a pricking pin through hole is formed in the downward concave part of the lower shell, and a sharp pricking part of the conductive pricking pin penetrates through the pricking pin through hole upwards to enter the wire pressing space.
Preferably, the conductive needle is a stainless steel conductive needle.
Preferably, the needle seat is provided with a puncture needle mounting hole which penetrates through the needle seat up and down, an internal thread sleeve is fixed at the upper end part of the puncture needle mounting hole, the conductive puncture needle consists of the puncture tip part and a screw rod which is integrally and coaxially connected to the lower end of the puncture tip part, the screw rod of the conductive puncture needle is in threaded fit connection with the internal thread sleeve, and the lower end of the screw rod is provided with a hexagon socket hole for adjusting the height position of the conductive puncture needle.
Preferably, the internal thread sleeve is an internal thread copper sleeve, and the internal thread copper sleeve is connected with a power-taking outgoing line for voltage measurement.
As a further improvement of the utility model, two arc-shaped wire pressing grooves for pressing wires with different sizes are respectively arranged at the upper and lower end positions of the middle part of the wire pressing beam; the wire pressing beam can be turned for 180 degrees to adapt to wire pressing operation of power lines with different thicknesses.
The utility model discloses in be provided with respectively on the assembly joint face of going up the assembly joint face of casing and the assembly joint face of casing down and be used for the iron core to closing the iron core that connects and pass through the hole, it is in with lower iron core to go up the iron core and pass through hole department to closing and connect and form annular iron core.
The utility model discloses in, the lower extreme of casing is provided with the casing entry down, the casing entrance is connected with the casing seat, the needle file integration is connected on the casing seat.
Preferably, one side of the upper shell and one side of the lower shell are rotatably connected through a hinge shaft, and the other side of the upper shell and the other side of the lower shell are fixedly connected through a buckle.
The utility model discloses in, go up casing and the buckle connection structure between the casing down and be: the improved structure is characterized in that the upper shell is connected with a U-shaped retaining ring, the lower shell is provided with a clamping plate, the U-shaped retaining ring is buckled on the clamping plate, and the front end of the U-shaped retaining ring is provided with a guide inclined plane convenient for clamping connection.
The utility model discloses in, the wire winding skeleton is formed by first coil skeleton and second coil skeleton through the buckle connection about the amalgamation, second coil skeleton passes through the buckle connection to be fixed on the casing seat.
In the utility model, the upper shell is formed by upper and lower sleeving of an upper shell cover and an upper shell seat, and one end of the upper shell seat facing the upper shell cover is provided with a groove body for accommodating the upper iron core; and a pagoda-shaped spring used for tightly propping the upper iron core on the lower iron core is arranged between the upper iron core and the upper shell cover.
In order to improve the strength of the crimping beam, the crimping beam is composed of three plate bodies which are parallel to each other and arranged at intervals and screw seats which are respectively connected to two ends of each plate body, and screw mounting holes are formed in the screw seats.
In the utility model, the shape of the cross section of the internal thread sleeve is square, and the internal thread sleeve is matched with the square hole on the upper part of the needle mounting hole of the needle seat.
When the open-close type current transformer is used, a power line to be measured is placed in the power line detection hole, and the magnitude of current can be measured through induction of the induction coil in the shell; when the voltage on the power line needs to be detected, the line pressing module is used for tightly pressing the power line on the conductive puncture needle, and the conductive puncture needle punctures the plastic sheath of the power line to be contacted with the power line, so that the voltage on the power line can be led out through an external line to be directly measured.
Wherein, the external connecting wire can be welded on the conductive internal thread sleeve; in order to facilitate the welding of external connecting wires, a wire connecting notch is formed in the position, close to the internal thread sleeve, of the pricking pin mounting hole.
The utility model has the advantages that:
first, the utility model discloses an open-close type current transformer that can compromise voltage detection, through the inside felting needle module that sets up of casing under, can compromise the measurement of voltage when realizing current measurement on the power line.
Second, the utility model discloses a can compromise open-close type current transformer of voltage detection, the upper and lower position at line ball roof beam middle part is provided with the arc wire pressing groove for the line ball of two equidimensions not respectively, can adapt to the line ball operation of different thickness power lines.
Third, the utility model discloses an open-close type current transformer that can compromise voltage detection, the height-adjustable of electrically conductive felting needle is favorable to improving the reliability of line ball operation.
Fourth, the utility model discloses an open-close type current transformer that can compromise voltage detection, the line ball roof beam by three mutual parallel and the interval set up the plate body with connect respectively the screw base at plate body both ends is constituteed, its intensity is good, the reliability of the puncture contact of electrically conductive felting needle and electric current line when having improved the line ball.
Fifth, the utility model discloses an open-close type current transformer that can compromise voltage detection leans on the felting needle mounting hole the opening for the wiring has been seted up to the position of internal thread cover, for the welding of making things convenient for the external connection.
Drawings
Fig. 1 is a schematic structural diagram of an open-close type current transformer capable of considering voltage detection according to the present invention;
FIG. 2 is a schematic structural view of the wire crimping module shown in FIG. 1 with the wire crimping module removed;
FIG. 3 is a schematic structural view of the upper housing, the lower housing and the external connection wires of FIG. 2 removed;
FIG. 4 is a schematic structural view of a crimping beam;
FIG. 5 is a schematic structural view of the upper housing disassembled into the upper housing cover and the upper housing seat;
FIG. 6 is a schematic structural view of the lower case;
FIG. 7 is a schematic structural view of the housing seat;
FIG. 8 is a schematic view of the structure of the electrically conductive lance.
In the figure: 1. the wire winding device comprises an upper shell component, 2, a lower shell component, 3, a needle module, 4, a wire pressing module, 5, an upper shell, 6, an upper iron core, 7, a lower shell, 8, a lower iron core, 9, a winding framework, 10, an upward arched part, 11, a downward concave part, 12, a power line detection hole, 13, a compression screw, 14, a wire pressing beam, 15, a wire pressing space, 16, a needle seat, 17, a conductive needle, 18, a needle through hole, 19, a needle mounting hole, 20, an internal thread sleeve, 21, a sharp thorn part, 22, a screw rod, 23, an arc wire pressing groove, 24, an iron core penetrating hole, 25, a shell seat, 26, a hinge shaft, 27, a buckle connection, 28, a U-shaped buckle ring, 29, a buckle plate, 30, a guide inclined plane, 31, an upper half coil framework, 32, a lower half coil framework, 33, an upper shell cover, 34, an upper shell seat, 35 and a groove body.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Fig. 1 to 8 show an embodiment of an open-close type current transformer for voltage detection according to the present invention, which comprises an upper housing assembly 1, a lower housing assembly 2, a needle module 3 disposed on the lower housing assembly 2, a line pressing module 4 connected to the upper portion of the lower housing assembly 2, the upper shell component 1 comprises an upper shell 5 and an upper iron core 6 arranged in the upper shell, the lower shell component 2 comprises a lower shell 7, a lower iron core 8 arranged in the lower shell 7, a winding frame 9 sleeved on the lower iron core 8 and an induction coil (not shown in the figure) wound on the winding frame 9, the middle part of the lower end of the upper shell 5 is arched upwards, the middle part of the upper end of the lower shell 7 is recessed downwards, the upper shell 5 and the lower shell 7 are assembled and connected up and down, and a power line detection hole 12 is formed between an upward arched part 10 of the upper shell 5 and a downward concave part 11 of the lower shell 7; the wire pressing module 4 comprises a wire pressing beam 14 fixed on the upper part of the lower shell 5 through a compression screw 13, and the wire pressing beam 14 is bridged above the downward concave part 11 of the lower shell 7 and forms a wire pressing space 15 with the downward concave part 11 of the lower shell 7; the needle module 3 comprises a needle seat 16 fixed inside the lower casing 7, and an electric conduction needle 17 arranged on the needle seat 16, wherein a needle through hole 18 is arranged at the position of the downward concave part 11 of the lower casing 7, and a sharp part of the electric conduction needle 17 penetrates upwards through the needle through hole 18 to enter the wire pressing space 15.
Preferably, the conductive spike 17 is a stainless steel conductive spike.
Preferably, a puncture needle mounting hole 19 penetrating up and down is formed in the needle base 16, an internal thread sleeve 20 is fixed at the upper end portion of the puncture needle mounting hole 19, the conductive puncture needle 17 is composed of the puncture tip portion 21 and a screw rod 22 integrally and coaxially connected to the lower end of the puncture tip portion 21, the screw rod 22 of the conductive puncture needle 17 is in threaded fit connection with the internal thread sleeve 20, and an internal hexagonal hole for adjusting the height position of the conductive puncture needle 17 is formed in the lower end of the screw rod 22.
Preferably, the internal thread sleeve 20 is an internal thread copper sleeve, and an electricity-taking outgoing line (not shown in the figure) for voltage measurement is connected to the internal thread copper sleeve.
As a further improvement of this embodiment, two arc-shaped wire pressing grooves 23 for pressing wires with different sizes are respectively arranged at the upper and lower end positions of the middle part of the wire pressing beam 14; the wire pressing beam 14 can be turned for 180 degrees to adapt to wire pressing operation of different thickness power lines.
In this embodiment, an iron core through hole 24 for connection of an iron core is respectively formed in the assembly connection surface of the upper housing 5 and the assembly connection surface of the lower housing 7, and the upper iron core 6 and the lower iron core 8 are connected in an involutive manner at the iron core through hole 24 to form an annular iron core.
In this embodiment, a housing inlet is provided at the lower end of the lower housing 7, a housing seat 25 is connected to the housing inlet, and the needle seat 16 is integrally connected to the housing seat 25.
Preferably, one side of the upper shell 5 and one side of the lower shell 7 are rotatably connected through a hinge shaft 26, and the other side of the upper shell 5 and the other side of the lower shell 7 are fixed through a snap connection 27.
In this embodiment, the structure of the snap connection 27 between the upper housing 5 and the lower housing 7 is: the upper shell 5 is connected with a U-shaped retaining ring 28, the lower shell 7 is provided with a buckling plate 29, the U-shaped retaining ring 28 is buckled on the buckling plate 29, and the front end of the U-shaped retaining ring 28 is provided with a guide inclined plane 30 facilitating buckling connection 27.
In this embodiment, the bobbin 9 is formed by vertically splicing an upper half coil bobbin 31 and a lower half coil bobbin 32 through snap-fit connection, and the lower half coil bobbin 31 is fixed on the housing seat 25 through snap-fit connection.
In this embodiment, the upper housing 5 is formed by vertically sleeving an upper housing cover 33 and an upper housing seat 34, and a groove 35 for accommodating the upper iron core 6 is arranged at one end of the upper housing seat 34 facing the upper housing cover 33; a pagoda-shaped spring (not shown) for pressing the upper core 6 against the lower core 8 is provided between the upper core 6 and the upper housing cover 33.
In order to improve the strength of the wire pressing beam 14, the wire pressing beam 14 is composed of three plate bodies which are parallel to each other and arranged at intervals and screw seats which are respectively connected to two ends of the plate bodies, and screw mounting holes are formed in the screw seats.
In this embodiment, the internally threaded sleeve 20 has a square cross-sectional shape that fits within a square hole in the upper portion of the lancet mounting hole 19 of the needle hub 16.
When the open-close type current transformer is used, a power line to be measured is placed in the power line detection hole, and the magnitude of current can be measured through induction of the induction coil in the shell; when the voltage on the power line needs to be detected, the voltage line module 4 is used for tightly pressing the power line on the conductive puncture needle 17, and the conductive puncture needle 17 punctures the plastic sheath of the power line to be contacted with the power line, so that the voltage on the power line can be led out through an external line to be directly measured.
Wherein, the external connection wire can be welded on the conductive internal thread sleeve 20; in order to facilitate the welding of external connecting wires, a wire connecting notch is formed in the position, close to the internal thread sleeve 20, of the puncture needle mounting hole 19.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. An open-close type current transformer capable of considering voltage detection is characterized by comprising an upper shell assembly, a lower shell assembly, a pricking pin module arranged on the lower shell assembly, and a line pressing module connected to the upper part of the lower shell assembly, wherein the upper shell assembly comprises an upper shell and an upper iron core arranged in the upper shell; the wire pressing module comprises a wire pressing beam fixed on the upper part of the lower shell through a compression screw, and the wire pressing beam is connected above the downward concave part of the lower shell in a bridging manner and forms a wire pressing space with the downward concave part of the lower shell; the pricking pin module comprises a needle seat fixed in the lower shell and a conductive pricking pin arranged on the needle seat, a pricking pin through hole is formed in the downward concave part of the lower shell, and a sharp pricking part of the conductive pricking pin penetrates through the pricking pin through hole upwards to enter the wire pressing space.
2. The open-close type current transformer capable of considering voltage detection as claimed in claim 1, wherein the needle base is provided with a needle mounting hole which penetrates through the needle mounting hole from top to bottom, an internal thread sleeve is fixed at the upper end portion of the needle mounting hole, the conductive needle is composed of the spine portion and a screw rod which is integrally and coaxially connected to the lower end of the spine portion, the screw rod of the conductive needle is in threaded fit connection with the internal thread sleeve, and the lower end of the screw rod is provided with a hexagon socket hole for adjusting the height position of the conductive needle.
3. The open-close type current transformer capable of considering voltage detection according to claim 2, characterized in that the internal thread sleeve is an internal thread copper sleeve, and an electricity taking outgoing line for voltage measurement is connected to the internal thread copper sleeve; and a gap for wiring is arranged on the position, close to the internal thread sleeve, of the puncture needle mounting hole.
4. The open-close type current transformer capable of detecting voltage according to claim 1, wherein two arc-shaped line pressing grooves with different sizes for pressing lines are respectively arranged at the upper end position and the lower end position of the middle part of the line pressing beam; the wire pressing beam can be turned for 180 degrees to adapt to wire pressing operation of power lines with different thicknesses.
5. The open-close type current transformer capable of detecting voltage according to claim 1, wherein iron core through holes for iron core connection are respectively formed in the assembly connection surface of the upper shell and the assembly connection surface of the lower shell, and the upper iron core and the lower iron core are connected in an involutory manner at the iron core through holes to form an annular iron core.
6. The opening-closing type current transformer capable of detecting voltage according to claim 1, wherein a shell inlet is formed in the lower end of the lower shell, a shell seat is connected to the shell inlet, and the needle seat is integrally connected to the shell seat.
7. The open-close type current transformer capable of realizing voltage detection according to claim 6, wherein one side of the upper shell and one side of the lower shell are rotatably connected through a hinge shaft, and the other side of the upper shell and the other side of the lower shell are fixed through buckling connection; go up the buckle connection structure between casing and the lower casing and do: the upper shell is connected with a U-shaped retaining ring, the lower shell is provided with a clamping plate, the U-shaped retaining ring is buckled on the clamping plate, and the front end of the U-shaped retaining ring is provided with a guide inclined plane convenient for clamping connection.
8. The open-close type current transformer capable of detecting voltage according to claim 7, wherein the winding framework is formed by vertically splicing an upper half coil framework and a lower half coil framework through a buckle connection, and the lower half coil framework is fixed on the shell seat through the buckle connection.
9. The open-close type current transformer capable of considering voltage detection as claimed in claim 8, wherein the upper shell is formed by upper and lower sleeving of an upper shell cover and an upper shell seat, and a groove body for accommodating the upper iron core is arranged at one end of the upper shell seat facing the upper shell cover; and a pagoda-shaped spring used for tightly propping the upper iron core on the lower iron core is arranged between the upper iron core and the upper shell cover.
10. The open-close type current transformer capable of detecting voltage according to claim 9, wherein the wire pressing beam is composed of three plate bodies arranged in parallel and at intervals and screw seats respectively connected to two ends of the plate bodies, and screw mounting holes are formed in the screw seats.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202220412804.2U CN217239198U (en) | 2022-02-28 | 2022-02-28 | Open-close type current transformer capable of detecting voltage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202220412804.2U CN217239198U (en) | 2022-02-28 | 2022-02-28 | Open-close type current transformer capable of detecting voltage |
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CN217239198U true CN217239198U (en) | 2022-08-19 |
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CN202220412804.2U Active CN217239198U (en) | 2022-02-28 | 2022-02-28 | Open-close type current transformer capable of detecting voltage |
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- 2022-02-28 CN CN202220412804.2U patent/CN217239198U/en active Active
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