Novel puncture current transformer

Abstract

According to the technical scheme, the novel puncture current transformer is characterized in that the novel puncture current transformer comprises a puncture needle transformer shell and a transformer inner core, the transformer shell is composed of two installation shell bodies and comprises a fixed base shell body, a movable base shell body and a detachable bottom plate, the fixed base shell body is movably connected with the movable base shell body, and the movable base shell body is connected with the detachable bottom plate. The mutual inductor shell is provided with symmetrical connecting protrusions, and the connecting protrusions are close to the side surface of the mutual inductor shell. The detachable bottom plate is close to the lower portion of the fixing base shell, the fixing base shell is provided with a fixing groove, and the detachable bottom plate is provided with a matched fixing buckle. By means of the symmetrical connecting protrusions, the mutual inductor shell is formed by combining the same two sets of installation shells, the phenomenon of wrong installation is avoided, different detachable bottom plates are replaced to adapt to different wires, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and more specifically to a novel puncture current transformer. Background Technology

[0002] Currently, puncture-type current transformers are electrical devices used to measure alternating current. Utilizing the principle of electromagnetic induction, they convert a large primary current into a smaller secondary current according to a certain ratio, facilitating processing by measurement, protection, and control equipment. When current flows through the primary side, an alternating magnetic flux is generated in the iron core. This flux passes through the secondary winding, inducing an electromotive force and current in the secondary winding. The secondary current is directly proportional to the primary current. This method enables the measurement and transformation of large currents, playing a crucial role in power systems and related fields. Puncture-type current transformers puncture the cable's insulation layer through a puncture structure, allowing the transformer's puncture needle to contact the cable's inner core, thereby acquiring the voltage signal from the cable and achieving the power extraction function.

[0003] However, the aforementioned existing technologies still have some drawbacks. Common puncture-type current transformer housings are composed of two sets of mirror-shaped mounting housings. During assembly, the mirror-shaped housings are very similar and may be misidentified, easily leading to incorrect assembly, which reduces production efficiency. Furthermore, the mirror-shaped housings require additional molds, and the cost of a similar mold is relatively high. In addition, the connecting parts are integrated with the current transformer housing, and when damage occurs, the entire housing needs to be replaced, which is costly and has high maintenance costs. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a novel puncture current transformer.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a needle-type current transformer housing and a current transformer inner core. The current transformer housing is composed of two sets of mounting housings. The current transformer housing includes a fixed base housing, a movable base housing, and a detachable base plate. The fixed base housing and the movable base housing are movably connected. The current transformer housing is provided with symmetrical connecting protrusions, which are close to the side surface of the current transformer housing. The detachable base plate is located near the lower part of the fixed base housing. The fixed base housing is provided with a fixing groove, and the detachable base plate is provided with corresponding fixing buckles.

[0006] The present invention is further configured such that: the connecting protrusion includes a concave block and a convex block adapted to the concave block, the concave block being close to the movable part and the convex block being close to the fixed part.

[0007] The present invention is further configured such that: the convex block protrusion is an arc-shaped protrusion with a through hole A, the concave block recess is an arc-shaped cavity adapted to the arc-shaped protrusion, the concave block is provided with a through hole B adapted to the arc-shaped protrusion, and a pin is provided on either side of the symmetrical connecting protrusion to pass through the through hole A and the through hole B.

[0008] The present invention is further configured such that: both the concave block and the convex block are provided with mounting cavities, a mounting plate is provided in the mounting cavity, the mounting plate is provided with threaded holes, the connecting protrusion is provided with a vertical opening corresponding to the threaded holes, the vertical opening passes through the mounting cavity, and a fixing screw is provided in the vertical opening.

[0009] The present invention is further configured such that: the mounting housing has a mounting protrusion on one side of the dividing line with respect to the axis of symmetry, and a mounting groove on the other side that corresponds to the mounting protrusion.

[0010] The present invention is further configured such that: the detachable base plate includes base plate A and base plate B, base plate B is provided with a waterproof outer shell, base plate B is provided with a waterproof groove, and the waterproof outer shell is provided with a waterproof buckle.

[0011] In summary, this utility model has the following beneficial effects: by using symmetrical connecting protrusions, the transformer housing only requires two identical sets of mounting housings to be assembled, avoiding the phenomenon of incorrect installation; by replacing different detachable base plates to adapt to different wiring, the adaptability of this utility model is improved, production efficiency is increased, and costs are reduced. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0013] Figure 2 This is a front view of this embodiment;

[0014] Figure 3 This is a partial cross-sectional view at point A in this embodiment;

[0015] Figure 4 This is an exploded schematic diagram of this embodiment;

[0016] Figure 5 This is a schematic diagram of the housing installation in this embodiment;

[0017] Figure 6 This is a schematic diagram of an open state in this embodiment;

[0018] Reference numerals: 1. Transformer housing; 11. Mounting housing; 111. Mounting protrusion; 112. Mounting groove; 2. Fixed seat housing; 21. Convex block; 211. Arc-shaped protrusion; 212. Through hole A; 22. Fixed groove; 3. Movable seat housing; 31. Concave block; 311. Arc-shaped cavity; 312. Through hole B; 4. Connecting protrusion; 41. Pin; 42. Vertical opening; 421. Fixing screw; 5. Mounting cavity; 51. Mounting plate; 511. Threaded hole; 6. Removable base plate; 61. Fixing buckle; 62. Base plate A; 63. Base plate B; 631. Waterproof slot; 7. Waterproof outer shell; 71. Waterproof buckle. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] This embodiment discloses a novel puncture current transformer, such as Figures 1 to 6 As shown, the device includes a current transformer housing 1 with a needle-shaped housing and a current transformer core. The current transformer housing 1 consists of two sets of mounting housings 11. The current transformer housing 1 includes a fixed base housing 2, a movable base housing 3, and a detachable base plate 6. The fixed base housing 2 and the movable base housing 3 are movably connected. The current transformer housing 1 is provided with symmetrical connecting protrusions 4, which are located near the side surface of the current transformer housing 1. The symmetrical arrangement of the connecting protrusions 4 allows any two sets of mounting housings 11 to be appropriately combined during assembly, avoiding misassembly due to similarity on both sides. The detachable base plate 6 is located near the lower part of the fixed base housing 2. The fixed base housing 2 is provided with a fixing groove 22, and the detachable base plate 6 is provided with corresponding fixing buckles 61. The detachable base plate 6 allows for the adaptation of different wiring by replacing different detachable base plates 6 when designing a lower interface of the fixed housing, improving the adaptability of this device.

[0021] Furthermore, the connecting protrusion 4 includes a concave block 31 and a convex block 21 adapted to the concave block 31. The concave block 31 is located near the movable part, and the convex block 21 is located near the fixed part. The cooperation between the concave block 31 and the convex block 21 is simple and convenient. The movable part and the fixed part can be quickly positioned through the adapted concave block 31 and convex block 21, making the installation of this utility model simple and convenient.

[0022] Further improvements include: the convex block 21 has an arc-shaped protrusion 211 with a through hole A212 at its protrusion; the concave block 31 has an arc-shaped cavity 311 corresponding to the arc-shaped protrusion 211 at its recessed part; the concave block 31 has a through hole B312 corresponding to the arc-shaped protrusion 211; and a pin 41 is provided on either side of the symmetrical connecting protrusion 4, passing through the through holes A212 and B312. The pin 41 allows the movable part to rotate and open around its center. The arc-shaped cavity 311 and the arc-shaped protrusion 211 prevent collisions and jamming between the convex block 21 and the concave block 31 during the rotational opening of the movable part, ensuring a smooth and easy opening process. The through holes A212 and B312 allow for easy and reliable installation of the pin 41 on either of the two end faces of the movable part and the fixed part.

[0023] Further improvements include the following: both the concave block 31 and the convex block 21 are provided with mounting cavities 5. A mounting plate 51 is provided within each mounting cavity 5, and the mounting plate 51 is provided with threaded holes 511. The connecting protrusion 4 is provided with a vertical opening 42 corresponding to the threaded holes 511. The vertical opening 42 extends through the mounting cavity 5, and a fixing screw 421 is provided within the vertical opening 42. The fixing screw 421, when inserted into the vertical opening 42, obstructs the movement of the movable part, thus ensuring good fixation of the invention. The fixing screw 421 is movably connected to the mounting plate 51, which is only located within the mounting cavity 5, through the vertical opening 42, allowing the fixing screw 421 to be securely fixed within the vertical opening 42. When the connection of the invention becomes loose and experiences stripping or other faults, only the mounting plate 51 needs to be replaced for cost-effective repair.

[0024] To further improve the design, the mounting housing 11 has a mounting protrusion 111 on one side of the dividing line with a symmetrical axis, and a mounting groove 112 on the other side that corresponds to the mounting protrusion 111. The two sets of mounting housings 11 can be appropriately combined through the cooperation of the mounting protrusion 111 and the mounting groove 112.

[0025] Further improvements include a detachable base plate 6 comprising a base plate A62 and a base plate B63. The base plate B63 is fitted with a waterproof outer shell 7. This waterproof outer shell 7 prevents splashing water from entering the device during use, protecting it from short circuits caused by water splashes. The base plate B63 is provided with a waterproof groove 631, and the waterproof outer shell 7 is provided with a waterproof buckle 71. The waterproof outer shell 7 can be easily installed by the interaction of the waterproof groove 631 and the waterproof buckle 71.

[0026] Working principle of this utility model

[0027] During assembly, the transformer housing 1 is symmetrically designed. When assembling the two sets of mounting housings 11, there is no need to confirm the orientation; simply align the mounting protrusion 111 with the mounting groove 112 to complete the assembly. When the movable part and the fixed part are engaged, the convex block 21 and concave block 31 can easily and reliably combine the movable part and the fixed part together. The symmetrical connecting protrusion 4 can engage the pin 41 with the through hole A212 and through hole B312 on either side to achieve a hinge connection between the movable part and the fixed part on one side. The movable part can rotate around the pin 41, which is very convenient. The detachable base plate 6 can be easily and conveniently installed on the fixed part through the cooperation of the fixing buckle 61 and the fixing groove 22. The waterproof outer shell 7 can be easily installed through the cooperation of the waterproof groove 631 and the waterproof buckle 71.

[0028] When using this device, rotate the fixing screws 421 located inside the connecting protrusion 4 to move the symmetrical fixing screws 421 away from the fixing part. At this time, the movable part can easily rotate around the pin 41 as the center to open the device. Insert the cable to be tested into the closed movable part of the device through the opening, and rotate the fixing screws 421 to make the symmetrical fixing screws 421 all enter the fixing part. The movable part and the fixing part of the device will obtain a stable and reliable connection. Pierce the cable insulation with the piercing needle to obtain power, thus completing the installation of the device.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of puncture current transformer, comprising a puncture needle transformer shell (1) provided with a transformer inner core, the transformer shell (1) is composed of two groups of mounting shells (11), characterized in that: The transformer housing (1) comprises a fixed seat housing (2), a movable seat housing (3), a detachable bottom plate, the fixed seat housing (2) is movably connected with the movable seat housing (3), the transformer housing (1) is provided with symmetrical connecting protrusions (4), the connecting protrusions (4) are close to the side surface of the transformer housing (1), the detachable bottom plate (6) is close to the lower part of the fixed seat housing (2), the fixed seat housing (2) is provided with a fixed groove (22), and the detachable bottom plate (6) is provided with a matched fixed buckle (61).

2. A novel puncture current transformer as claimed in claim 1, wherein: The connecting protrusions (4) comprise concave blocks (31) and convex blocks (21) matched with the concave blocks (31), the concave blocks (31) are close to movable parts, and the convex blocks (21) are close to fixed parts.

3. A novel puncture current transformer as claimed in claim 2, characterized in that: The convex blocks (21) are arc-shaped protrusions (211) provided with through holes A (212) at protruding parts, the concave blocks (31) are arc-shaped cavities (311) matched with the arc-shaped protrusions (211) at recessed parts, the concave blocks (31) are provided with through holes B (312) matched with the arc-shaped protrusions, and the symmetrical connecting protrusions (4) are provided with pin shafts (41) penetrating through the through holes A (212) and the through holes B (312) at any side.

4. A novel puncture current transformer as claimed in claim 2, wherein: The concave blocks (31) and the convex blocks (21) are provided with mounting cavities (5), the mounting cavities (5) are provided with mounting plates (51) therein, the mounting plates (51) are provided with threaded holes (511), the connecting protrusions (4) are provided with vertical openings (42) matched with the threaded holes (511), the vertical openings (42) penetrate through the mounting cavities (5), and the vertical openings (42) are provided with fixed screws (421) therein.

5. A novel puncture current transformer as claimed in claim 1, wherein: The mounting housing (11) is provided with mounting protrusions (111) on one side of the boundary line of the symmetrical shaft and is provided with mounting grooves (112) matched with the mounting protrusions on the other side.

6. A novel puncture current transformer as claimed in claim 1, wherein: The detachable bottom plate (6) comprises a bottom plate A (62) and a bottom plate B (63), the bottom plate B (63) is provided with a waterproof shell (7), the bottom plate B (63) is provided with a waterproof clamping groove (631), and the waterproof shell (7) is provided with a waterproof buckle (71).

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