Box-type transformer

Abstract

The utility model provides a box-type transformer which comprises a box body and a molded case circuit breaker arranged in the box body, a connecting copper bar connected with the transformer is arranged above the molded case circuit breaker, the molded case circuit breaker is connected with a signal line, and the signal line is connected with the molded case circuit breaker. The box body is internally provided with a first accommodating area for accommodating the molded case circuit breaker and the connecting channel and a second accommodating area for accommodating the signal line, and an isolation baffle plate is arranged between the first accommodating area and the second accommodating area. And if an operator carelessly does not power off the transformer or residual current exists on the box-type transformer, electric shock is easy to occur when the operator carries out maintenance or overhaul, and the safety performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of box transformers, in particular to a box-type transformer. Background Art

[0002] The function of the box-type transformer is to convert high-voltage electricity into low-voltage electricity and distribute it to end users. It also has protection, control and monitoring functions. On the box-type transformer, the molded case circuit breaker is connected to the signal line mainly to transmit the status and action information of the circuit breaker itself to the remote monitoring system, control room or other auxiliary equipment. In the existing technology, there is a copper busbar above the molded case circuit breaker, which is connected to the transformer. The copper busbar carries 280V low-voltage electricity. In the existing technology, the signal line is mostly set directly above the molded case circuit breaker. If the operator is careless and fails to cut off the power to the transformer or there is residual current on the box-type transformer, the operator is prone to electric shock when maintaining or repairing it, which poses a safety hazard. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that most signal lines are arranged directly above the molded case circuit breaker. If the operator is careless and fails to cut off the power to the transformer or there is residual current in the box-type transformer, the operator is prone to electric shock when performing maintenance or inspection, thereby providing a box-type transformer with high safety.

[0004] To this end, the present invention provides a box-type transformer, comprising a box body and a molded case circuit breaker arranged in the box body, a connecting copper busbar connected to the transformer is arranged above the molded case circuit breaker, a signal line is connected to the molded case circuit breaker, and a first accommodating area for accommodating the molded case circuit breaker and a connecting channel and a second accommodating area for accommodating the signal line are provided in the box body, and an isolation baffle is provided between the first accommodating area and the second accommodating area.

[0005] Furthermore: a plurality of connection terminals for signal lines to be connected are provided in the second accommodating area.

[0006] Furthermore: at least one support frame is provided in the second accommodating area, a connecting plate connected to the wiring terminals is provided on the support frame, and a plurality of wiring terminals are arranged in sequence along the height direction of the connecting plate.

[0007] Furthermore: the support frame includes a connecting piece connected to the inner side wall of the second accommodating area and a bending piece connected to the connecting rod, and an angle of 0°-180° is formed between the connecting piece and the bending piece.

[0008] Furthermore: two support frames are provided, and the bending piece is bent toward the side away from the inner side wall of the second accommodating area.

[0009] Furthermore: the connecting piece is connected to the inner side wall of the second accommodating area by fastening nails.

[0010] The technical solution of this utility model has the following advantages:

[0011] 1. The utility model provides a box-type transformer, in which a first accommodating area and a second accommodating area are provided inside the shell, a molded case circuit breaker is provided in the first accommodating area, and a connecting copper busbar is provided above the molded case circuit breaker, which is connected to the transformer inside the box. In order to save production costs, the copper busbars in the industry are usually simply wrapped with rubber, but some are still exposed outside. In order to transmit the status and action information of the circuit breaker itself to the DTU or TTU, a signal line will be connected to the molded case circuit breaker. One end of the signal line is connected to the molded case circuit breaker, and the other end is connected to the wiring terminal. A second accommodating area is provided in the box and is separated from the first accommodating area by an isolation baffle. There is only a weak current in the second accommodating area and it will not affect the human body. In this way, during maintenance, it is only necessary to open the second accommodating area separately, and the operator will not touch the copper busbar. Therefore, during maintenance, the risk of electric shock to the operator can be effectively reduced, thereby effectively improving the safety of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is the overall structural diagram of the box-type transformer;

[0014] Figure 2 is a diagram showing the arrangement of the connection terminals in the second accommodation area;

[0015] Figure 3 It is a schematic diagram of the side structure of the box-type transformer;

[0016] Figure 4 A top view of the second accommodating area;

[0017] Figure 5 for Figure 4 Enlarged view of part A in the middle.

[0018] Description of reference numerals:

[0019] 1. Box body; 2. Molded case circuit breaker; 3. Connecting copper busbar; 4. First storage area; 5. Second storage area; 51. Wiring terminal; 6. Isolation baffle; 7. Support frame; 71. Connecting piece; 72. Bending piece; 8. Connecting plate; 9. Fastening nail. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Example

[0025] This embodiment provides a box-type transformer, including a box body 1 and a molded case circuit breaker 2 arranged in the box body 1. A connecting copper bus 3 connected to the transformer is arranged above the molded case circuit breaker 2. A signal line is connected to the molded case circuit breaker 2. A first accommodating area 4 for accommodating the molded case circuit breaker 2 and a connecting channel and a second accommodating area 5 for accommodating the signal line are provided in the box body 1. An isolation baffle 6 is provided between the first accommodating area 4 and the second accommodating area 5.

[0026] The above specific improvements are: Figure 1 and Figure 2 As shown, compared with the prior art, a first accommodating area 4 and a second accommodating area 5 are provided inside the housing. A molded case circuit breaker 2 is provided in the first accommodating area 4. A connecting copper busbar 3 is provided above the molded case circuit breaker 2. The connecting copper busbar 3 is connected to the transformer inside the housing 1. To save production costs, the copper busbars in the industry are usually simply wrapped with rubber, but some are still exposed. In order to transmit the status and action information of the circuit breaker itself to the DTU or TTU, (DTU Data Transfer Unit is a wireless terminal device specially used to convert serial port data into IP data or convert IP data into serial port data for transmission via a wireless communication network, TTU distribution transformer ... rsupervisoryTerminalUnit, distribution transformer monitoring terminal, in the power supply and distribution system, the distribution transformer monitoring terminal is used to collect and control information of the distribution transformer), a signal line will be connected to the molded case circuit breaker 2, one end of the signal line is connected to the molded case circuit breaker 2, and the other end will be connected to the terminal block 51. A second accommodating area 5 is set in the box 1, and an isolation baffle 6 is used to separate it from the first accommodating area 4. There is only a weak current in the second accommodating area 5 and it will not affect the human body. In this way, during maintenance, it is only necessary to open the second accommodating area 5 separately, and the operator will not touch the copper busbar. Therefore, during maintenance, the risk of electric shock to the operator can be effectively reduced, and the safety of the box 1 is effectively improved.

[0027] On the basis of the above embodiment: a plurality of connection terminals 51 for connecting signal lines are provided in the second accommodating area 5 .

[0028] The above specific improvements are: Figure 2 As shown, the signal line needs to use a shielded twisted pair cable, and a terminal block 51 for the signal line is provided in the second accommodating area 5. The installation of the signal line needs to strictly comply with the power safety specification (GB50171) and the requirements of the equipment manufacturer. The specific installation method is not unique and needs to be specifically planned according to the model of the box 1 and the customer's requirements. The installation method of the signal line is an existing technology and will not be described in detail here.

[0029] On the basis of the above embodiment: at least one support frame 7 is provided in the second accommodating area 5 , and a connecting plate 8 connected to the wiring terminals 51 is provided on the support frame 7 , and a plurality of wiring terminals 51 are arranged in sequence along the height direction of the connecting plate 8 .

[0030] Based on the above embodiment: the support frame 7 includes a connecting piece 71 connected to the inner wall of the second accommodating area 5 and a bending piece 72 connected to the connecting plate 8, and an angle of 0°-180° is formed between the connecting piece 71 and the bending piece 72.

[0031] On the basis of the above embodiment: two support frames 7 are provided, and the bending piece 72 is bent toward the side away from the inner side wall of the second accommodating area 5 .

[0032] On the basis of the above embodiment: the connecting piece 71 is connected to the inner wall of the second accommodating area 5 by using fastening nails 9.

[0033] The above specific improvements are: Figure 3-Figure 5 As shown, a support frame 7 is provided in the second accommodating area 5. The support frame 7 includes a connecting piece 71 and a bending piece 72 which are bent by a stamping device. The connecting piece 71 is fixed to the side of the second accommodating area 5 by a fastening nail 9, and the bending piece 72 is bent toward the side away from the inner wall of the second accommodating area 5. Therefore, the two support frames 7 installed in the second accommodating area 5 are bent from both sides to the middle, so as to facilitate the operator to connect the wires. In order to effectively fix the wiring terminals 51, a vertically arranged connecting plate 8 is provided on the bending piece 72. Waist-shaped holes are provided on the connecting plate 8 and the bending piece 72. During the connection process, the two waist-shaped holes are aligned to enable the two to be positioned and connected. A number of wiring terminals 51 are arranged in sequence on the connecting plate 8, so that a number of wiring terminals 51 can be effectively accommodated, which is convenient for the operator to connect the wires in an orderly manner.

[0034] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A box-type transformer, comprising a box body (1) and a molded case circuit breaker (2) arranged in the box body (1), a connecting copper bus (3) connected to the transformer is arranged above the molded case circuit breaker (2), and a signal line is connected to the molded case circuit breaker (2), characterized in that: The box (1) is provided with a first accommodating area (4) for accommodating a molded case circuit breaker (2) and a connecting channel, and a second accommodating area (5) for accommodating a signal line, and an isolation baffle (6) is provided between the first accommodating area (4) and the second accommodating area (5).

2. A box-type transformer according to claim 1, characterized in that: A plurality of connection terminals (51) for connecting signal lines are arranged in the second accommodating area (5).

3. A box-type transformer according to claim 1 or 2, characterized in that: At least one support frame (7) is provided in the second accommodating area (5), and a connecting plate (8) connected to the connecting terminals (51) is provided on the support frame (7), and a plurality of connecting terminals (51) are arranged in sequence along the height direction of the connecting plate (8).

4. A box-type transformer according to claim 3, characterized in that: The support frame (7) comprises a connecting piece (71) connected to the inner side wall of the second accommodating area (5) and a bending piece (72) connected to the connecting rod, wherein an angle of 0°-180° is formed between the connecting piece (71) and the bending piece (72).

5. A box-type transformer according to claim 4, characterized in that: Two support frames (7) are provided, and the bending piece (72) is bent toward a side away from the inner side wall of the second accommodating area (5).

6. The box-type transformer according to claim 5, characterized in that: The connecting piece (71) is connected to the inner side wall of the second accommodating area (5) by using fastening nails (9).

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