Integrated electric leakage detection device

Abstract

The utility model discloses an integrated electric leakage detection device, which comprises a shell, a protective cover, a zero sequence current transformer and a PCB (Printed Circuit Board), the top of the protective cover is open, and the protective cover is arranged in the shell; the zero sequence current transformer is arranged in the protective cover; the PCB is arranged in the shell and located outside the protective cover, the zero sequence current transformer is connected with a pin header, and the pin header extends out of the protective cover to be connected with the PCB. The electric leakage detection device is simple and convenient to assemble, the zero sequence current transformer and the PCB are protected and are not easy to damage, and the service life can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric leakage detection, more particularly to an integrated electric leakage detection device. BACKGROUND

[0002] In the field of existing electric leakage detection devices, the traditional design usually adopts a separated installation mode, in which a zero-sequence current transformer is electrically connected to a PCB board through a lead wire. However, this design has many problems and safety hazards.

[0003] Firstly, the connection part of the zero-sequence current transformer and the PCB board is completely exposed, which is easy to be squeezed or collided during installation or use, thereby causing the electrical connection to be loose or damaged and affecting the normal operation of the device.

[0004] Secondly, the separated electric leakage detection device is limited by the assembly process when being installed in the housing, which makes the production process complicated.

[0005] Therefore, it is an urgent problem for those skilled in the art to develop an integrated electric leakage detection device which is easy to assemble and not easy to be damaged. SUMMARY

[0006] Therefore, the utility model provides an integrated electric leakage detection device which is easy to assemble and not easy to be damaged.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] The integrated electric leakage detection device comprises:

[0009] a housing,

[0010] a protective cover, the top of the protective cover is open, and the protective cover is arranged in the housing;

[0011] a zero-sequence current transformer, the zero-sequence current transformer is arranged in the protective cover;

[0012] a PCB board, the PCB board is arranged in the housing and located outside the protective cover, the zero-sequence current transformer is connected with a pin header, and the pin header extends out of the protective cover and is connected with the PCB board.

[0013] The beneficial effects of the above-mentioned technical solutions are that the zero-sequence current transformer is arranged in the protective cover and connected with the PCB board through the pin header, which simplifies the complex process of the traditional separated installation; the connection part of the zero-sequence current transformer and the PCB board is effectively protected, which avoids damage caused by being squeezed or collided due to being exposed, thereby improving the safety and reliability of the device.

[0014] Preferably, the zero sequence current transformer comprises: a first zero sequence current transformer and a second zero sequence current transformer; the first zero sequence current transformer and the second zero sequence current transformer are arranged in a stacked manner, and a spacer is arranged between the first zero sequence current transformer and the second zero sequence current transformer; the first zero sequence current transformer and the second zero sequence current transformer are connected with the row of pins.

[0015] Preferably, a connecting hole is arranged at the connection position of the PCB and the row of pins, and the row of pins is arranged in the connecting hole. The arrangement of the connecting hole on the PCB enables the row of pins to be accurately connected with the PCB, thereby ensuring the stability and reliability of the electrical connection and avoiding signal transmission interruption or failure caused by loose connection. The connection manner simplifies the traditional complex assembly process and reduces the complexity and error rate in the assembly process.

[0016] Preferably, a limiting groove is arranged at the top edge of the protective cover, and the row of pins is arranged in the limiting groove. The row of pins can be more accurately aligned with the connecting hole on the PCB through the guidance of the limiting groove.

[0017] Preferably, the shell comprises: a shell body and a shell bottom; the shell body is buckled with the shell bottom. The buckling design of the shell body and the shell bottom makes the assembly and disassembly of the shell more convenient and fast, thereby facilitating the maintenance and overhaul of the internal device.

[0018] Preferably, an insertion piece is arranged at the bottom of the shell body, and an insertion groove is arranged at the top surface of the shell bottom, and the insertion piece is inserted into the insertion groove.

[0019] Preferably, a buckle is arranged at the top surface of the shell bottom, and a clamping groove is arranged at the bottom end of the side wall of the shell body, and the buckle is clamped in the clamping groove.

[0020] Preferably, an installation groove is arranged at the side wall of the shell body, and the installation groove penetrates through the side wall of the shell body; one side of the PCB connected with the row of pins is arranged in the installation groove.

[0021] Preferably, a baffle is arranged at the top of the shell bottom, the baffle is inserted into the installation groove, and is located at the side of the PCB close to the outside of the shell body. The arrangement of the baffle can limit and protect the PCB.

[0022] Preferably, a convex column is protruded inwardly at the bottom of the protective cover, and the first zero sequence current transformer, the second zero sequence current transformer and the spacer are arranged outside the convex column. The design of the convex column can effectively fix the positions of the first zero sequence current transformer, the second zero sequence current transformer and the spacer, so that the positions of the first zero sequence current transformer, the second zero sequence current transformer and the spacer in the protective cover are more stable.

[0023] Via the technical scheme, compared with the prior art, the utility model discloses provide a kind of integrated electric leakage detection device, its beneficial effects are that:

[0024] (1) zero sequence current transformer is placed in protective cover, is connected with PCB board by row pin, avoid electrical connection part to be exposed, reduce the damage risk caused by extrusion or collision.

[0025] (2) the snap design of shell, further protect internal components, while assembly and disassembly are convenient and fast, it is convenient to maintain and overhaul to device interior. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the drawings needed to be used in the following embodiment or prior art description will be simply introduced, and obviously, the drawings in the following description are only the embodiment of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to the provided drawings without creating labor.

[0027] Figure 1 The drawing is the structure schematic view of electric leakage detection device provided by the utility model;

[0028] Figure 2 The drawing is the structure explosion drawing of electric leakage detection device provided by the utility model;

[0029] Figure 3 The drawing is the structure schematic view of protective cover, PCB board and zero sequence current transformer connection state provided by the utility model;

[0030] Figure 4 The drawing is the structure explosion drawing of protective cover and PCB board provided by the utility model;

[0031] Figure 5 The drawing is the structure explosion drawing of protective cover and zero sequence current transformer provided by the utility model;

[0032] Figure 6 The drawing is the structure schematic view of shell provided by the utility model;

[0033] Figure 7 The drawing is the structure schematic view of shell bottom provided by the utility model.

[0034] Among them, in the drawing,

[0035] 1-outer shell;

[0036] 11-shell;12-shell bottom;13-plug-in piece;14-plug-in slot;15-buckle;16-card slot;17-mounting groove;18-baffle;

[0037] 2-protection cover;

[0038] 21-limiting groove; 22-convex column;

[0039] 3-PCB board;

[0040] 31-connection hole;

[0041] 4-needle; 5-first zero sequence current transformer; 6-second zero sequence current transformer; 7-separation piece. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0043] The utility model embodiment discloses integrated electric leakage detection device, including:

[0044] Shell 1,

[0045] Protection cover 2, the top of protection cover 2 is open, and is placed in shell 1,

[0046] Zero sequence current transformer, zero sequence current transformer is placed in protection cover 2,

[0047] PCB board 3, PCB board 3 is placed in shell 1, and is located the outside of protection cover 2, and zero sequence current transformer is connected with needle 4, and needle 4 extends out protection cover 2 and is connected with PCB board 3.

[0048] In order to further optimize the above technical scheme, zero sequence current transformer includes: first zero sequence current transformer 5 and second zero sequence current transformer 6;First zero sequence current transformer 5 and second zero sequence current transformer 6 are arranged in layers, and separation piece 7 is arranged between first zero sequence current transformer 5 and second zero sequence current transformer 6;First zero sequence current transformer 5 and second zero sequence current transformer 6 are connected with needle 4. Two zero sequence current transformers, one of which can collect sinusoidal alternating current 50 / 60Hz and pulsating direct current residual current signal, and the other can collect alternating current to 1000Hz sinusoidal alternating current, pulsating direct current, composite residual current signal and smooth direct current residual current, two zero sequence current transformers make the detected electric leakage signal more comprehensive, and can improve the accuracy of electric leakage detection.

[0049] In order to further optimize the above technical scheme, the PCB 3 is provided with a connecting hole 31 at the connecting position of the PCB 3 and the pin 4, and the pin 4 is correspondingly arranged in the connecting hole 31. The bottom of the PCB 3 is inserted with the shell bottom 12 to limit the position of the PCB 3 in the shell 1.

[0050] In order to further optimize the above technical scheme, the top edge of the protective cover 2 is provided with a limiting groove 21, and the pin 4 is arranged in the limiting groove 21.

[0051] In order to further optimize the above technical scheme, the shell 1 comprises a shell body 11 and a shell bottom 12, and the shell body 11 is buckled with the shell bottom 12.

[0052] In order to further optimize the above technical scheme, the bottom of the shell body 11 is provided with an insertion piece 13, the top surface of the shell bottom 12 is correspondingly provided with an insertion groove 14, and the insertion piece 13 is inserted in the insertion groove 14.

[0053] In order to further optimize the above technical scheme, the top surface of the shell bottom 12 is provided with a buckle 15, the bottom end of the side wall of the shell body 11 is provided with a clamping groove 16, and the buckle 15 is clamped in the clamping groove 16. Through the connection of the insertion piece 13, the insertion groove 14, the buckle 15 and the clamping groove 16, the shell body 11 and the shell bottom 12 are connected stably and are convenient to disassemble.

[0054] In order to further optimize the above technical scheme, the side wall of the shell body 11 is provided with a mounting groove 17, and the mounting groove 17 penetrates through the side wall of the shell body 11; one side of the PCB 3 connected with the pin 4 is arranged in the mounting groove 17.

[0055] In order to further optimize the above technical scheme, the top of the shell bottom 12 is provided with a baffle 18, the baffle 18 is inserted in the mounting groove 17 and is located at the side of the PCB 3 close to the outside of the shell body 11. The PCB 3 is provided with an input end and an output end, and the input end and the output end are exposed to facilitate connection with external devices.

[0056] In order to further optimize the above technical scheme, the bottom of the protective cover 2 protrudes inwardly with a protruding column 22, the first zero sequence current transformer 5, the second zero sequence current transformer 6 and the partition plate 7 are all arranged outside the protruding column 22. The first zero sequence current transformer 5, the second zero sequence current transformer 6 and the partition plate 7 are also bonded in the protective cover 2 by means of glue solidification, so as to ensure the stability of the performance and not to be affected by external extrusion.

[0057] In the specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the related parts can be referred to the method part.

[0058] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated electric leakage detection device, characterized by, Include: A shell, A protective cover, the top of which is open, and is placed in the shell; A zero sequence current transformer, the zero sequence current transformer is placed in the protective cover; A PCB board is placed in the shell and outside the protective cover, the zero sequence current transformer is connected with the pinout, the pinout extends out of the protective cover and connects with the PCB board.

2. The integrated electric leakage detection device according to claim 1, wherein The zero sequence current transformer includes: a first zero sequence current transformer and a second zero sequence current transformer; The first zero sequence current transformer and the second zero sequence current transformer are arranged in layers, and a spacer is arranged between the first zero sequence current transformer and the second zero sequence current transformer; The first zero sequence current transformer and the second zero sequence current transformer are connected with the pinout.

3. The integrated electric leakage detection device according to claim 2, wherein The PCB board is provided with a connecting hole at the connecting position of the PCB board and the pinout, and the pinout is correspondingly arranged in the connecting hole.

4. The integrated electric leakage detection device of claim 1, wherein, The top edge of the protective cover is provided with a limiting groove, and the pinout is arranged in the limiting groove.

5. The integrated electric leakage detection device of claim 1, wherein, The shell includes: a shell and a shell bottom; The shell and the shell bottom are buckled.

6. The integrated electric leakage detection device according to claim 5, wherein The bottom of the shell is provided with an insertion piece, and the top surface of the shell bottom is correspondingly provided with an insertion slot, and the insertion piece is inserted into the insertion slot.

7. The integrated electric leakage detection device of claim 5, wherein, The top surface of the shell bottom is provided with a buckle, and the bottom end of the side wall of the shell is provided with a clamping groove, and the buckle is clamped in the clamping groove.

8. The integrated electric leakage detection device of claim 5, wherein, The side wall of the shell is provided with a mounting groove, and the mounting groove penetrates through the side wall of the shell; One side of the PCB board connected with the pinout is placed in the mounting groove.

9. The integrated electric leakage detection device of claim 8, wherein, The top of the shell bottom is provided with a baffle, the baffle is inserted into the mounting groove, and is located on the side of the PCB board close to the outside of the shell.

10. The integrated electric leakage detection device of claim 2, wherein, The bottom of the protective cover is protruded inwardly with a convex column, the first zero sequence current transformer, the second zero sequence current transformer and the spacer are all sleeved outside the convex column.

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