Low-voltage side operation box

Abstract

The utility model discloses a low-voltage side operation box, and belongs to the technical field of circuit protection equipment. Comprising a box body, a wire holder is fixedly arranged on the side wall of the lower portion of an inner cavity of the box body, a low-voltage lightning arrester is arranged on the upper portion of the wire holder, a knife fuse switch is arranged on the upper portion of the low-voltage lightning arrester, the wire holder, the low-voltage lightning arrester and the knife fuse switch are electrically connected through a connecting wire, and the lower portion of the wire holder is electrically connected with a lead-in wire. The upper part of the knife fuse switch is electrically connected with a rotating joint through a connecting wire; and the rotating joint is electrically connected with a lead-out wire. According to the utility model, through the rotary arrangement of the rotary joint and the outlet wire box, the leading-out direction of the leading-out wire can be freely adjusted according to the equipment installation position, and a worker does not need to carry out wire arrangement and direction adjustment on the leading-out wire, so that the workload of the worker and the wire usage amount are greatly reduced, and the equipment cost is further reduced.

Description

Technical Field

[0001] The utility model relates to a low-voltage side operating box, belonging to the technical field of circuit protection equipment. Background Art

[0002] The distribution cabinet is used in the occasions where the load is dispersed and there are fewer circuits, and the motor control center is used in the occasions where the load is concentrated and there are more circuits. They distribute the power of a circuit of the upper-level distribution equipment to the nearest load. This level of equipment should provide protection, monitoring and control for the load. The inlet and outlet lines of the distribution network transformer are divided into high-voltage side and low-voltage side. In addition to the protection of the high-voltage side of the transformer, in fact, the protection of the low-voltage side is equally important, which can not only protect the transformer itself, but also protect the power safety of users.

[0003] The patent document of application number CN201620387946.2 discloses a low-voltage side protection box for a distribution transformer, which includes a box body and a hinged box door, wherein a transparent observation port is arranged in the center of the box door; a wire hole is arranged on the bottom surface of the box body, and the wire enters the box body from the wire hole and is connected to the terminal block; the terminal block is connected in parallel with the low-voltage lightning arrester inlet terminal and the low-voltage knife fuse switch inlet terminal through a cable; the low-voltage lightning arrester outlet terminal is connected to the box body and grounded through the box body; the low-voltage lightning arrester is arranged in the center of the box body; the low-voltage lightning arrester is an integrated lightning arrester with an LED indicator; the side of the low-voltage lightning arrester with an LED indicator faces the transparent observation port. This product can realize the protection of the transformer, prevent the transformer from being burned by lightning strikes, prevent the transformer from being burned by overcurrent and overload, and can protect electrical equipment by using fuses, and provide safe isolation for the circuit. The product adopts a modular design for easy installation and replacement. This product is maintenance-free, easy to install, low-cost, and convenient for large-scale promotion in rural areas.

[0004] Although the above patent can achieve the beneficial effects of easy installation and replacement, maintenance-free, easy installation, low cost, and convenient for large-scale promotion in rural areas, it is necessary to provide line direction according to the installation angle of the equipment when the line is exported. The above patent lacks the function of line direction, which requires on-site staff to guide the line to the direction of equipment installation, which not only increases the workload of the staff, but also increases the use of wires and increases the cost of equipment.

[0005] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a low-voltage side operation box that can freely adjust the line lead-out position according to the equipment position, reduce the wiring workload and wire usage of the staff, and reduce the equipment cost in view of the above shortcomings.

[0007] An optimization scheme, a low-voltage side operation box, comprising a box body, a wiring seat is fixedly arranged on the lower side wall of the inner cavity of the box body, a low-voltage lightning arrester is arranged on the upper part of the wiring seat, and a knife fuse switch is arranged on the upper part of the low-voltage lightning arrester;

[0008] The wiring seat, low-voltage lightning arrester and knife-fuse switch are electrically connected via connecting wires;

[0009] The lower part of the wiring seat is electrically connected with an inlet electric wire, the upper part of the knife fuse switch is electrically connected with a rotating joint through a connecting wire, and the rotating joint is electrically connected with an outlet electric wire.

[0010] Furthermore, the rotating joint includes a fixed connecting block and a rotating connecting block, the rotating connecting block is rotatably arranged on the upper part of the fixed connecting block, the bottom of the fixed connecting block and the upper part of the rotating connecting block are provided with wiring holes, the side walls of the fixed connecting block and the rotating connecting block are provided with threaded holes, and the threaded holes are provided with fixing bolts.

[0011] Furthermore, the rotating joint is fixedly arranged on the inner wall of the box through an insulating seat, and the insulating seat is fixedly arranged on the inner wall of the box.

[0012] Furthermore, the volume of the rotating connection block is smaller than the volume of the fixed connection block, and the rotating connection block is spaced apart from the inner wall of the box.

[0013] Furthermore, the insulating seat is a concave structure, and the rotating connecting block is fixedly arranged in the inner cavity of the insulating seat.

[0014] Furthermore, the side walls of the insulating seat are symmetrically provided with threaded holes, the threaded holes are threadedly connected with fixing bolts, and the rotating connecting block is fixed in the inner cavity of the insulating seat by the fixing bolts.

[0015] Furthermore, an incoming wire box is provided at the bottom of the box, and a wire arrangement groove is provided at the bottom of the box, and the introduced wires are arranged in the incoming wire box and the wire arrangement groove.

[0016] Furthermore, an outlet wire box is rotatably provided on the upper part of the box body, and the outlet wire box is connected with the middle part of the box body through an outlet wire hole, and the lead-out wires are passed through the outlet wire hole.

[0017] Furthermore, the lead-in wire is penetrated by one end of the lead-in wire box, and the lead-out wire is penetrated by one end of the lead-out wire box.

[0018] Furthermore, an electrostatic fan is disposed on the side wall of the box body, an exhaust box is disposed on the side wall of the box body, the exhaust box is connected to the electrostatic fan, and a grid is disposed at the mouth of the exhaust box.

[0019] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0020] The rotating setting of the rotating joint and the outlet wire box of the utility model can freely adjust the lead-out direction of the lead-out wires according to the installation position of the equipment. The staff does not need to arrange and adjust the direction of the lead-out wires, which greatly reduces the workload of the staff and the use of wires, thereby reducing the cost of the equipment box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a low-pressure side operating box of the utility model;

[0022] Figure 2 It is a cross-sectional structural schematic diagram of a low-pressure side operating box of the utility model;

[0023] Figure 3 This is a schematic diagram of the rotary joint structure of a low-pressure side operating box of the utility model;

[0024] Figure 4 This is a schematic diagram of the insulating seat structure of a low-voltage side operating box of the utility model;

[0025] In the figure, 1-box, 2-terminal block, 3-low-voltage lightning arrester, 4-knife fuse switch, 5-connecting wire, 6-inlet wire, 7-rotating joint, 8-exporting wire, 9-fixed connecting block, 10-rotating connecting block, 11-fixing bolt, 12-insulating seat, 13-inlet wire box, 14-cable trough, 15-outlet wire box, 16-outlet hole, 17-static fan, 18-exhaust box, 19-grid, 20-inlet box, 21-dust filter screen. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] Embodiment 1, as Figure 1 , 2 , 3 and 4, the utility model provides a low-voltage side operation box, including a box body 1, a wiring seat 2 is fixedly provided on the lower side wall of the inner cavity of the box body 1, a low-voltage lightning arrester 3 is provided on the upper part of the wiring seat 2, and a knife fuse switch 4 is provided on the upper part of the low-voltage lightning arrester 3;

[0030] The wiring seat 2, the low-voltage lightning arrester 3 and the knife-fuse switch 4 are electrically connected via a connecting line 5;

[0031] The lower part of the wiring seat 2 is electrically connected with an inlet wire 6, the upper part of the knife fuse switch 4 is electrically connected with a rotary joint 7 through a connecting line 5, and the rotary joint 7 is electrically connected with an outlet wire 8.

[0032] The rotating joint 7 comprises a fixed connection block 9 and a rotating connection block 10, and the rotating connection block 10 is rotatably arranged on the upper part of the fixed connection block 9. The bottom of the fixed connection block 9 and the upper part of the rotating connection block 10 are provided with wiring holes, and the side walls of the fixed connection block 9 and the rotating connection block 10 are provided with threaded holes, and the threaded holes are provided with fixing bolts 11.

[0033] The rotating joint 7 is fixedly arranged on the inner wall of the box body 1 through the insulating seat 12 , and the insulating seat 12 is fixedly arranged on the inner wall of the box body 1 .

[0034] The volume of the rotating connection block 10 is smaller than that of the fixed connection block 9 , and the rotating connection block 10 is spaced apart from the inner wall of the box body 1 .

[0035] The insulating seat 12 is a concave structure, and the rotating connecting block 10 is fixedly disposed in the inner cavity of the insulating seat 12 .

[0036] The side wall of the insulating seat 12 is symmetrically provided with threaded holes, and the threaded holes are threadedly connected with fixing bolts 11 . The rotating connecting block 10 is fixed in the inner cavity of the insulating seat 12 by the fixing bolts 11 .

[0037] An incoming wire box 13 is provided at the bottom of the box body 1 , and a wire arrangement groove 14 is provided at the bottom of the box body 1 . The incoming wires 6 are arranged in the incoming wire box 13 and the wire arrangement groove 14 .

[0038] An outlet wire box 15 is rotatably provided on the upper part of the box body 1 . The outlet wire box 15 is connected to the middle part of the box body 1 through an outlet hole 16 . The lead-out wire 8 is passed through the outlet hole 16 .

[0039] The lead-in wire 6 is inserted into one end of the lead-in wire box 13 , and the lead-out wire 8 is inserted into one end of the lead-out wire box 15 .

[0040] An electrostatic fan 17 is disposed on the side wall of the box body 1 , and an exhaust box 18 is disposed on the side wall of the box body 1 . The exhaust box 18 is connected to the electrostatic fan 17 , and a grid plate 19 is disposed at the mouth of the exhaust box 18 .

[0041] An air inlet box 20 is provided on the outer wall of the box body 1 opposite to the electrostatic fan 17 , and the air inlet box 20 is connected to the box body 1 through a plurality of evenly distributed through holes.

[0042] The outer wall of the air intake box 20 is provided with a plurality of evenly distributed through holes.

[0043] The inner cavity of the air intake box 20 is inserted with a dust filter screen plate 21 .

[0044] The working principle of this utility model:

[0045] The electrostatic fan 17 starts, and the external air is filtered by the dust filter plate 21 of the air inlet box 20 and enters the box body 1, and the electrostatic fan 17 discharges the air in the box body 1.

[0046] The rotatable arrangement of the outgoing wire box 15 and the box body 1, and the rotatable arrangement of the rotatable joint 7 and the outgoing wire 8, enable the head of the outgoing wire 8 to rotate according to the position of the electrical appliance, facilitating the connection between the outgoing wire 8 and the electrical appliance.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0048] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A low-pressure side operating box, characterized in that: It comprises a box body (1), a wiring seat (2) is fixedly provided on the side wall of the lower part of the inner cavity of the box body (1), a low-voltage lightning arrester (3) is provided on the upper part of the wiring seat (2), and a knife fuse switch (4) is provided on the upper part of the low-voltage lightning arrester (3); The wiring seat (2), the low-voltage lightning arrester (3) and the knife-fuse switch (4) are electrically connected via a connecting wire (5); The lower part of the wiring seat (2) is electrically connected to an inlet wire (6), the upper part of the knife fuse switch (4) is electrically connected to a rotary joint (7) via a connecting wire (5), and the rotary joint (7) is electrically connected to an outlet wire (8).

2. A low-pressure side operation box according to claim 1, characterized in that: The rotating joint (7) comprises a fixed connection block (9) and a rotating connection block (10), wherein the rotating connection block (10) is rotatably arranged on the upper part of the fixed connection block (9). The bottom of the fixed connection block (9) and the upper part of the rotating connection block (10) are provided with wiring holes, and the side walls of the fixed connection block (9) and the rotating connection block (10) are provided with threaded holes, and the threaded holes are provided with fixing bolts (11).

3. A low-pressure side operation box according to claim 2, characterized in that: The rotating joint (7) is fixedly arranged on the inner wall of the box body (1) via an insulating seat (12), and the insulating seat (12) is fixedly arranged on the inner wall of the box body (1).

4. A low-pressure side operation box according to claim 2, characterized in that: The volume of the rotating connection block (10) is smaller than the volume of the fixed connection block (9), and the rotating connection block (10) is spaced apart from the inner wall of the box body (1).

5. A low-pressure side operation box according to claim 3, characterized in that: The insulating seat (12) is a concave structure, and the rotating connection block (10) is fixedly arranged in the inner cavity of the insulating seat (12).

6. A low-pressure side operation box according to claim 5, characterized in that: The side wall of the insulating seat (12) is symmetrically provided with threaded holes, and fixing bolts (11) are threadedly connected to the threaded holes. The rotating connection block (10) is fixed in the inner cavity of the insulating seat (12) by the fixing bolts (11).

7. A low-pressure side operation box according to claim 1, characterized in that: The bottom of the box (1) is provided with an incoming wire box (13), and the bottom of the box (1) is provided with a wire arrangement groove (14), and the incoming wires (6) are arranged in the incoming wire box (13) and the wire arrangement groove (14).

8. A low-pressure side operation box according to claim 7, characterized in that: An outlet wire box (15) is rotatably provided on the upper part of the box body (1), and the outlet wire box (15) is connected to the middle part of the box body (1) through an outlet wire hole (16), and the outlet wire (8) is inserted through the outlet wire hole (16).

9. A low-pressure side operation box according to claim 8, characterized in that: The lead-in wire (6) is intersected with one end of the lead-in wire box (13), and the lead-out wire (8) is intersected with one end of the lead-out wire box (15).

10. A low-pressure side operation box according to claim 1, characterized in that: The side wall of the box body (1) is provided with an electrostatic fan (17), and the side wall of the box body (1) is provided with an exhaust box (18). The exhaust box (18) is connected to the electrostatic fan (17), and a grid plate (19) is provided at the mouth of the exhaust box (18).

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