Waterproof puncture current sensor

Abstract

According to the technical scheme, the waterproof puncture current sensor is characterized in that the waterproof puncture current sensor comprises a mutual inductor assembly and a puncture assembly, the mutual inductor assembly and the puncture assembly are matched in a clamped connection mode, the mutual inductor assembly comprises a lower shell and an upper shell which can be opened and closed, iron cores are arranged in the lower shell and the upper shell respectively, and the lower shell and the upper shell are provided with a waterproof layer. The puncture assembly comprises a base and a movable clamping piece, a first clamping part and a second clamping part which are opposite are arranged on the base and the clamping piece, a puncture needle is arranged on the base, the tip end of the puncture needle penetrates out of the first clamping part, clamping lines are arranged on the first clamping part and the second clamping part, and the puncture needle is arranged on the base. The clamping lines comprise protruding parts and drainage grooves, and the drainage grooves are of an inclined structure. The utility model has the advantages of simple and reliable structure and waterproof function.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, and more specifically to a waterproof puncture current sensor. Background Art

[0002] At present, in the power system, it is often necessary to detect current and voltage, but the current and voltage at the end of the working cable cannot be detected. Therefore, the existing technology often uses an open-close current transformer to detect the current of the cable through the transformer. At the same time, a puncture needle is set on the transformer to puncture the insulation layer of the cable through the puncture needle to detect the voltage of the cable. Then the corresponding current and voltage signals are derived through the signal line, thereby realizing the current and voltage detection of the working cable.

[0003] However, the prior art still has some defects. When dealing with outdoor environments, after the puncture needle punctures the cable, rainwater from the outside can easily enter the cable through the gap after puncture, affecting the normal operation of the cable. Therefore, it is necessary to propose a waterproof puncture current sensor to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a waterproof puncture current sensor which has a simple and reliable structure and a waterproof function.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waterproof puncture current sensor, comprising a mutual inductor assembly and a puncture assembly, characterized in that: the mutual inductor assembly and the puncture assembly are snap-fitted, the mutual inductor assembly comprises an openable lower shell and an upper shell, both the lower shell and the upper shell are provided with an iron core, the puncture assembly comprises a base and a movable clamping member, the base and the clamping member are provided with a first clamping portion and a second clamping portion relative to each other, the base is provided with a puncture needle, the tip of the puncture needle passes through the first clamping portion, the first clamping portion and the second clamping portion are both provided with clamping patterns, the clamping patterns comprise a protrusion and a drainage groove, and the drainage groove is arranged in an inclined structure.

[0006] The utility model is further configured as follows: a sliding groove is arranged on the base, the clamping member moves in the sliding groove, a notch is arranged on the side wall outside the sliding groove, and the clamping member can rotate toward one side of the notch when it moves to the notch.

[0007] The utility model is further configured as follows: a rotatable screw is arranged in the sliding groove, the clamping piece cooperates with the screw thread, and the inner end of the puncture needle is connected with the internal thread of the base; a knob A and a knob B are arranged on the base, and the knob A and the knob B are used to drive the rotation of the screw and the puncture needle respectively.

[0008] The utility model is further configured as follows: a connecting groove is provided on the mutual inductor assembly, a connecting portion is provided on the puncture assembly, and an opening is provided at one end of the connecting groove so that the connecting portion can penetrate into the connecting groove from the opening.

[0009] The utility model is further configured as follows: the mutual inductor assembly and the puncture assembly are also provided with matching card blocks and card slots, and when the connecting portion is matched with the connecting slot, the card block is inserted into the card slot.

[0010] The utility model is further configured as follows: the lower shell and the upper shell are both configured as hollow semicircular structures; one end of the lower shell is hinged to the upper shell, and the other end is provided with a connecting assembly connected to the upper shell.

[0011] The utility model is further configured as follows: the connecting assembly includes a pull piece and a connecting cover plate, the pull piece is hinged to the lower shell body, the connecting cover plate is hinged to the pull piece, a buckle block is provided on the upper shell body, and the connecting cover plate is adapted to the buckle block.

[0012] In summary, the utility model has the following beneficial effects:

[0013] Compared with the prior art, the utility model has clamping patterns on both the first clamping part and the second clamping part of the puncture assembly, and the clamping patterns have protrusions and drainage grooves, wherein the protrusions mainly play a role in increasing friction and improving the stability of clamping, and the drainage grooves are mainly used on one side of the puncture needle. Since the drainage grooves have an inclined structure, a gap is formed between the cable and the first clamping part, and this gap allows rainwater to enter and drain from both sides of the gap, and the remaining water can slowly evaporate into the air by itself, so it will not flow onto the puncture needle, and will not enter the cable from the puncture gap.

[0014] At the same time, the mutual inductor assembly and the puncture assembly of the utility model are integrated into one by the connecting groove and the connecting block. They can be produced independently during production and can also be disassembled and used independently when used. The production and use are more flexible, the installation is convenient, and it has good practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0016] Figure 2 Schematic diagram of the structure of the embodiment in the open state;

[0017] Figure 3 Schematic diagram of the screw and puncture needle structure of the puncture assembly of this embodiment;

[0018] Figure 4 This is a schematic diagram of the structure of the clamping grooves of this embodiment when clamping a cable;

[0019] Figure 5 is an enlarged structural diagram of the connection assembly of this embodiment;

[0020] Figure 6 is a schematic structural diagram of one side of the connecting portion of this embodiment;

[0021] Figure 7 It is a structural schematic diagram of one side of the connecting groove of this embodiment.

[0022] Figure numerals: 1. Transformer assembly; 101. Lower shell; 102. Upper shell; 2. Piercing assembly; 201. Base; 202. Clamp; 4. First clamp; 5. Second clamp; 6. Clamping pattern; 601. Protrusion; 602. Drainage groove; 7. Screw; 8. Piercing needle; 901. Knob A; 902. Knob B; 10. Connecting groove; 11. Connecting part; 12. Block; 13. Slot; 14. Connecting assembly; 1401. Pull piece; 1402. Connecting cover; 15. Snap block; 16. Sliding groove; 1601. Notch; 17. Signal cable; 18. Drainage gap; 19. Detection cable; 20. Hole. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] This embodiment discloses a waterproof puncture current sensor. Figure 1-7 As shown, it includes a mutual inductor assembly 1 and a puncture assembly 2, and the mutual inductor assembly 1 and the puncture assembly 2 are snap-fitted. For details, please refer to Figure 6-7 The transformer assembly 1 is provided with a connecting groove 10, and the puncture assembly 2 is provided with a connecting portion 11. One end of the connecting groove 10 is provided with an opening so that the connecting portion 11 can be inserted into the connecting groove 10 from the opening; the transformer assembly 1 and the puncture assembly 2 are also provided with a matching card block 12 and a card slot 13. When the connecting portion 11 is matched with the connecting groove 10, the card block 12 is inserted into the card slot 13. Preferably, the cross-section of the connecting portion 11 and the connecting groove 10 is a triangular structure. Through the above structure, the transformer assembly 1 and the puncture assembly 2 can be produced and used separately, or they can be quickly connected and used together through the connecting structure. The production and assembly are convenient and fast, and the practicability is strong. During installation, it is only necessary to insert the connecting portion 11 from the opening below the connecting groove 10 and continue to slide upward. After installation, the card block 12 is inserted into the card slot 13 to form a limit, thereby the transformer assembly 1 and the puncture assembly 2 can be combined into this product.

[0025] Furthermore, the transformer assembly 1 includes an openable lower shell 101 and an upper shell 102, and an iron core is provided in the lower shell 101 and the upper shell 102. The iron cores of the upper shell 102 and the lower shell 101 form a ring-shaped iron core after closing, and the iron core includes a wire package, and the lead wires of the wire package pass through the lower shell 101 to form a part of the signal cable 17.

[0026] Furthermore, the puncture assembly 2 includes a base 201 and a movable clamping member 202, and the base 201 and the clamping member 202 are provided with a first clamping portion 4 and a second clamping portion 5 opposite to each other. The base 201 is provided with a puncture needle 8, and the tip of the puncture needle 8 penetrates from the first clamping portion 4. The tip of the puncture needle 8 can pierce the insulation layer of the cable, thereby leading out the internal electrical signal. Figure 6-7 The lead wire of the puncture needle passes through the signal processing module and the hole 20 on the puncture assembly and the mutual inductor assembly and is led out from one side of the lower shell 101, and constitutes another part of the signal cable 17. The first clamping part 4 and the second clamping part 5 are both provided with a clamping pattern 6, and the clamping pattern 6 includes a protrusion 601 and a drainage groove 602, and the drainage groove 602 is arranged in an inclined structure. Figure 4 , there are multiple groups of raised parts 601 and drainage grooves 602. When the clamping pattern 6 of the first clamping part 4 and the surface of the detection cable 19 are clamped, the raised part 601 will abut against the outer surface of the detection cable 19. Due to the small contact area, the pressure is strong, and the insulation layer of the cable can be slightly squeezed and deformed, thereby ensuring the stability of the clamping. Since the drainage groove 602 has an inclined structure, a drainage gap 18 will be formed between the insulation layer and the drainage groove 602. Since both sides of the drainage gap 18 are connected to the outside world, rainwater can be smoothly drained from both sides after entering, and the remaining part can be dispersed into the air by itself, so that rainwater will not enter the puncture needle, and will not enter the cable along the puncture gap. The clamping part of the prior art is generally a simple arc surface, the entire surface is in contact with the cable surface, there is no raised part 601 structure, the entire surface is insufficiently pressed against the outer surface of the detection cable, and the clamping is not stable enough. Moreover, the arc surface and the outer surface of the detection cable cannot be completely fitted together. Once a small amount of rainwater seeps in, the rainwater cannot dissipate into the air by itself, and will slowly seep into the puncture needle along the outer surface. Therefore, this embodiment provides a protrusion 601 to clamp and deform the detection cable 19, making the clamping more stable. At the same time, an inclined drainage groove 602 is actively provided to allow rainwater to better contact with the air, and excess water is drained from both sides. A small amount of rainwater can dissipate into the air by itself, effectively preventing water from remaining for a long time and infiltrating inward.

[0027] Further, see Figure 2The base 201 is provided with a sliding groove 16, the clamping member 202 moves in the sliding groove 16, and a notch 1601 is provided on the side wall outside the sliding groove 16. When the clamping member 202 moves to the notch 1601, it can rotate toward the notch 1601. With the above structure, when in the open state, the clamping member 202 can rotate toward the notch 1601 to avoid it, so that the detection cable can enter the center of the upper shell 102 and the lower shell 101 for clamping, and the installation is more convenient.

[0028] Further, see Figure 3 A rotatable screw rod 7 is arranged in the sliding groove 16, the clamping member 202 is threadedly matched with the screw rod 7, and the inner end of the puncture needle 8 is threadedly connected with the inner part of the base 201; a knob A901 and a knob B902 are arranged on the base 201, and the knob A901 and the knob B902 are respectively used to drive the rotation of the screw rod 7 and the puncture needle 8. Through the above structure, during installation, the knob A901 is used to control the movement of the clamping member 202 to clamp the detection cable, and the knob B902 is used to control the movement of the puncture needle 8 to pierce into the detection cable.

[0029] For further information, please refer to Figure 1-2 and Figure 5 The lower shell 101 and the upper shell 102 are both configured as hollow semicircular structures, one end of the lower shell 101 is hinged to the upper shell 102, and the other end is provided with a connecting assembly 14 connected to the upper shell 102. The connecting assembly 14 includes a pull piece 1401 and a connecting cover plate 1402, the pull piece 1401 is hinged to the lower shell 101, the connecting cover plate 1402 is hinged on the pull piece 1401, and a buckle block 15 is provided on the upper shell 102, and the connecting cover plate 1402 is adapted to the buckle block 15. It should be noted that when the connecting cover 1402 is buckled into the buckle block 15, the hinge point between the lever piece 1401 and the connecting cover 1402 is closer to the outer wall of the lower shell 101 than the hinge between the lever piece 1401 and the lower shell 101. Through the above structure, the connecting component 14 is arranged on the outside, which is easier to operate, and is locked through a mechanical structure. Compared with the prior art using spring buckles and other structural locking methods, the structure is more reliable and has a longer service life.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof puncture current sensor, comprising a mutual inductor component (1) and a puncture component (2), characterized in that: The mutual inductor assembly (1) and the puncture assembly (2) are snap-fitted together. The mutual inductor assembly (1) comprises an openable lower shell (101) and an upper shell (102). The lower shell (101) and the upper shell (102) are both provided with an iron core. The puncture assembly (2) comprises a base (201) and a movable clamping member (202). The base (201) and the clamping member (202) are provided with a first clamping portion (4) and a second clamping portion (5) which are opposite to each other. The base (201) is provided with a puncture needle (8). The tip of the puncture needle (8) penetrates through the first clamping portion (4). The first clamping portion (4) and the second clamping portion (5) are both provided with a clamping pattern (6). The clamping pattern (6) comprises a protruding portion (601) and a drainage groove (602). The drainage groove (602) is provided in an inclined structure.

2. A waterproof puncture current sensor according to claim 1, characterized in that: The base (201) is provided with a sliding groove (16), the clamping member (202) moves in the sliding groove (16), a notch (1601) is provided on the side wall outside the sliding groove (16), and the clamping member (202) can rotate toward one side of the notch (1601) when it moves to the notch (1601).

3. A waterproof puncture current sensor according to claim 2, characterized in that: A rotatable screw rod (7) is arranged in the sliding groove (16), the clamping member (202) is threadedly matched with the screw rod (7), and the inner end of the puncture needle (8) is threadedly connected with the inner end of the base (201); a knob A (901) and a knob B (902) are arranged on the base (201), and the knob A (901) and the knob B (902) are respectively used to drive the rotation of the screw rod (7) and the puncture needle (8).

4. The waterproof puncture current sensor according to claim 1, characterized in that: The mutual inductor assembly (1) is provided with a connecting groove (10), the puncture assembly (2) is provided with a connecting portion (11), and one end of the connecting groove (10) is provided with an opening so that the connecting portion (11) can penetrate into the connecting groove (10) from the opening.

5. The waterproof puncture current sensor according to claim 4, characterized in that: The mutual inductor assembly (1) and the puncture assembly (2) are also provided with a matching clamping block (12) and a clamping slot (13); when the connecting portion (11) is matched with the connecting slot (10), the clamping block (12) is clamped into the clamping slot (13).

6. The waterproof puncture current sensor according to claim 1, characterized in that: The lower shell (101) and the upper shell (102) are both configured as hollow semicircular structures; one end of the lower shell (101) is hinged to the upper shell (102), and the other end is provided with a connecting assembly (14) connected to the upper shell (102).

7. The waterproof puncture current sensor according to claim 6, characterized in that: The connecting assembly (14) comprises a pull piece (1401) and a connecting cover plate (1402), wherein the pull piece (1401) is hinged to the lower shell (101), and the connecting cover plate (1402) is hinged to the pull piece (1401), and a buckle block (15) is provided on the upper shell (102), and the connecting cover plate (1402) is adapted to the buckle block (15).

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