Split type direct current fault arc detection current transformer

Abstract

The utility model discloses a split type direct current fault arc detection current transformer which comprises a transformer body and a plurality of electronic wires. The mutual inductor main body comprises a shell seat, a coil and a cover shell, a main seat body and a wire holder are formed on the shell seat, a seat cavity is formed in the main seat body, and a cavity opening of the seat cavity is formed in the top of the main seat body; a plurality of needle bodies are arranged in the wire holder at intervals, and each needle body penetrates out of the top and the bottom of the front end face of the wire holder to form an upper needle pin and a lower needle pin. Each external connection end of the coil is correspondingly connected with the upper needle foot of one needle body; the cover shell is provided with a main cover body and an interface cover, the main cover body is detachably mounted on the main seat body, the interface cover covers the wire holder along with the mounting of the main cover body, and the bottom of the front end of the interface cover extends outwards to form an interface groove; one end of each electronic wire is provided with a wiring terminal, the other end of each electronic wire is provided with an external terminal, the wiring terminals of the electronic wires are the same, and the external terminals of the electronic wires are different. The utility model is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic and energy storage system technology, and in particular to a split-type DC fault arc detection current transformer. Background Technology

[0002] In photovoltaic and energy storage systems, various DC fault arc phenomena exist in the DC power transmission and distribution network, which can cause electrical performance interference and fire hazards in the electrical system, necessitating real-time monitoring of arcs. Currently, the system has numerous monitoring devices and instrument interfaces, but traditional DC fault arc detection current transformers, due to their integrated structural design, only have one interface. When different users connect different external instruments, multiple DC fault arc detection current transformers are required, each with an interface corresponding to one external instrument, causing inconvenience in use. Furthermore, the cost of multiple DC fault arc detection current transformers is high, limiting system design. To meet user needs, the structure of the DC fault current detection current transformer needs to be redesigned. Utility Model Content

[0003] The purpose of this invention is to provide a split-type DC fault arc detection current transformer.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A split-type DC fault arc detection current transformer includes a transformer body and several electronic wires that can be detached from the transformer body. The transformer body includes a housing, a coil, and a cover. The housing has a main body and a terminal block integrally connected to the front end of the main body. The main body has a cavity inside and an opening at its top for the coil to be inserted into the cavity. The terminal block has several pins spaced apart inside. Each pin extends from the top and bottom of the front end face of the terminal block, forming an upper pin and a lower pin. Each external terminal of the coil is connected to the upper pin of a corresponding pin. The cover has a main cover and an interface cover integrally connected to the front end of the main cover. The main cover is detachably installed on the main body. The interface cover covers the terminal block with the main cover. The front end of the interface cover extends outward at the bottom to form an interface groove to accommodate the lower pin.

[0006] The electronic wire has a terminal block at one end and an external terminal block at the other end. The terminal blocks of each electronic wire are the same and can be disassembled and assembled with the interface slot and the lower pin. The external terminals of each electronic wire are different and can be matched with different external instruments.

[0007] As a further technical solution of this utility model: the terminal block is at the same height as the main body, and the top of the terminal block is recessed with several wire outlet grooves.

[0008] As a further technical solution of this utility model: the terminal block is provided with limiting pieces on the bottom and bottom edge of both sides of its front end face to cooperate with the interface groove to form an interface.

[0009] As a further technical solution of this utility model: the main body is provided with a plurality of buckles at the bottom of its outer peripheral surface, and the main cover is provided with a slot at its bottom corresponding to each buckle. The main cover is fixed to the main body by the buckles and slots engaging with each other.

[0010] As a further technical solution of this utility model: each external terminal of the coil is connected to the upper pin of a needle body to form a connecting part, and each connecting part is reinforced by tinning.

[0011] As a further technical solution of this utility model: there are four needles in total, and the number of external terminals of the coil is the same as the number of needles.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model proposes a split-type DC fault arc detection current transformer. Through the cooperation between the transformer body and several electronic wires, it can be adapted for use by changing the corresponding electronic wires according to the type of external instrument. It is more convenient to use, achieves simpler assembly, and reduces costs. Attached Figure Description

[0013] Figure 1 This is an overall diagram of a split-type DC fault arc detection current transformer.

[0014] Figure 2 This is an exploded view of a split-type DC fault arc detection current transformer.

[0015] Figure 3 This is an exploded view of the main body of the mutual inductor. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of protection of this utility model.

[0017] Please see Figure 1 , Figure 2 and Figure 3A split-type DC fault arc detection current transformer includes a transformer body 10 and several electronic wires 20 that can be detached from the transformer body 10. The transformer body 10 includes a housing 11, a coil 12, and a cover 13. The housing 11 forms a main body 111 and a terminal block 112 integrally connected to the front end of the main body 111. The main body 111 has a cavity 101 formed therein and an opening 102 formed at the top of the cavity 101 for the coil 12 to be inserted into the cavity 101 through the opening 102. The terminal block 112 has several needles 14 spaced apart therein. Each needle 14 extends from the top and bottom of the front end face of the terminal block 112, forming an upper needle 141 and a lower needle 142.

[0018] Each external terminal of the coil 12 is connected to the upper pin 141 of the pin body 14 to form a connection part, and each connection part is reinforced by tinning.

[0019] The cover 13 has a main cover 131 and an interface cover 132 integrally connected to the front end of the main cover 131. The main cover 131 can be detachably installed on the main base 111. The interface cover 132 covers the terminal block 112 with the installation of the main cover 131. The front end of the interface cover 132 extends outward at the bottom to form an interface groove 133, which accommodates the lower pin 142.

[0020] Each electronic wire 20 has a terminal block 21 at one end and an external terminal block 22 at the other end. The terminal blocks 21 of each electronic wire 20 are the same and can be detached from the interface slot 133 and the lower pin 142. However, the external terminals 22 of each electronic wire 20 are different and can be matched with different external instruments. Therefore, the electronic wire 20 can be replaced according to the corresponding external instrument to adapt it for use.

[0021] Furthermore, in this embodiment, the terminal block 112 is at the same height as the main body 111, and the top of the terminal block 112 is recessed with a plurality of wire outlet grooves 103, so that an external end of the coil 12 passes through a wire outlet groove 103 and is connected to the upper needle 141 of a needle body 14.

[0022] Furthermore, in this embodiment, the terminal block 112 is provided with limiting pieces 104 on the bottom and bottom edge of both sides of its front end face to cooperate with the interface groove 133 to form an interface.

[0023] Furthermore, in this embodiment, the main body 111 is provided with a plurality of buckles 105 at the bottom of its outer peripheral surface, and the main cover 131 is provided with a latch 106 at its bottom corresponding to each buckle 105. The main cover 131 is fixed to the main body 111 by the buckles 105 and the latches 106 engaging with each other.

[0024] Furthermore, in this embodiment, there are four needles 14 in total, and the number of external terminals of the coil 12 is the same as the number of needles 14.

[0025] Furthermore, in this embodiment, both the main seat 111 and the main cover 131 are in the shape of an annular cylinder.

[0026] Understandably, the method of using a split-type DC fault arc detection current transformer according to this utility model includes the following steps: First, a coil 12 is wound on a magnetic core; Second, each external terminal of the coil 12 is connected to the upper pin 141 of a pin body 14 to form a connection part, and each connection part is reinforced with tin; Third, the coil 12 is installed into the cavity 101 of the main body 111, and the main cover 131 is installed on the main body 111, with the interface cover 132 covering the terminal block 112 along with the installation of the main cover 131; Fourth, according to the type of external instrument, the corresponding electronic wire 20 is selected, and the terminals 21 of the electronic wire 20 are connected and disconnected from the interface slot 133 and the lower pin 142, and the external terminals 22 are connected to the external instrument. Thus, the assembly of the split-type DC fault arc detection current transformer and its installation on the external instrument are completed.

[0027] In summary, this utility model of a split-type DC fault arc detection current transformer, through the cooperation between the transformer body 10 and several electronic wires 20, can be adapted for use by simply replacing the corresponding electronic wires 20 according to the type of external instrument, making it more convenient to use, achieving simpler assembly, and reducing costs.

[0028] Any combination of different embodiments of this utility model, provided it does not violate the inventive concept of this utility model, shall be considered as the disclosure of this utility model; any simple modifications to the technical solution and any combination of different embodiments within the scope of the inventive concept of this utility model, without violating the inventive concept of this utility model, shall be within the protection scope of this utility model.

Claims

1. A split-core DC fault arc detection current transformer, characterized by: The utility model relates to a kind of electronic transformer, including mutual inductor main body (10) and several electronic wires (20) capable of being disassembled relative to mutual inductor main body (10);The mutual inductor main body (10), including shell seat (11), coil (12) and cover (13), the shell seat (11) is formed with main seat body (111) and the terminal block (112) integrally connected in the front end of main seat body (111), the main seat body (111) is formed with seat cavity (101) in it and the cavity mouth (102) of seat cavity (101) is formed in its top, the coil (12) is loaded into seat cavity (101) from cavity mouth (102);The terminal block (112) is provided with several needle bodies (14) in its inner interval, and every needle body (14) is formed with upper needle foot (141) and lower needle foot (142) from the top and bottom of the front end surface of terminal block (112) one above the other;Every external terminal of the coil (12) is connected with the upper needle foot (141) of a needle body (14) correspondingly;The cover (13) is formed with main cover body (131) and the interface cover (132) integrally connected in the front end of main cover body (131), the main cover body (131) can be disassembled and installed on main seat body (111), and the interface cover (132) is covered on terminal block (112) with the installation of main cover body (131), and the front end of interface cover (132) is formed with interface slot (133) in the bottom and extends outward, to accommodate lower needle foot (142) with interface slot (133); The electronic wire (20) is provided with terminal (21) at one end and external terminal (22) at the other end, and the terminal (21) of every electronic wire (20) is the same, and can be disassembled relative to interface slot (133) and lower needle foot (142);The external terminal (22) of every electronic wire (20) is different, and is matched with different external instruments.

2. The split-core DC fault arc detection current transformer of claim 1, wherein: The terminal block (112) is equal in height with the main seat body (111), and the top interval of terminal block (112) is concavely provided with several wire outlet grooves (103).

3. The split-core DC fault arc detection current transformer of claim 1, wherein: The terminal block (112) is provided with limiting sheet (104) on the bottom of both sides of its front end surface and bottom edge, to form interface with interface slot (133).

4. The split-core DC fault arc detection current transformer of claim 1, wherein: The main seat body (111) is convexly provided with several buckles (105) in the bottom interval of its outer circumferential surface, and the main cover body (131) is provided with a clamping hole (106) corresponding to every buckle (105) in its bottom, and the main cover body (131) is fixed to the main seat body (111) by the corresponding embedding of buckle (105) and clamping hole (106).

5. The split-core DC fault arc detection current transformer of claim 1, wherein: Every external terminal of the coil (12) is connected with the upper needle foot (141) of a needle body (14) to form a connecting part, and every connecting part is reinforced by immersion tin.

6. The split-core DC fault arc detection current transformer of claim 1, wherein: The needle body (14) has four, and the number of external terminals of the coil (12) is the same as the number of needle bodies (14).

Images