High-low voltage switch cabinet insulation structure with high reliability

Abstract

The utility model discloses a high-reliability insulation structure of a high-low voltage switch cabinet, which comprises a power distribution switch cabinet, two installation substrates are fixedly installed on the rear side of the inner cavity of the power distribution switch cabinet, the front side of each installation substrate is fixedly connected with a copper bus bar, the surface of each copper bus bar is fixedly connected with an insulation shell, and the insulation shell is fixedly connected with a power distribution switch cabinet. An insulating protective plate is arranged on the front side of the insulating shell, a plurality of wiring terminals are arranged on the front side of the copper busbar, circular shells are fixedly connected to the two ends of the front side of the insulating protective plate, and locking assemblies are arranged at the two ends of the front side of the mounting substrate. According to the utility model, through the cooperative use of the bus copper bars and the power connection blocks, bus connection is carried out on a plurality of cables, through the arrangement of the locking assembly, the insulation protection plate is installed and fixed, and through the cooperative use of the insulation housing and the insulation protection plate, insulation shielding is carried out on the bus copper bars and the wiring terminals. Therefore, the purposes of convenient installation and butt joint, insulation shielding and electric shock prevention can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to high low voltage switchgear technical field, especially relate to a high reliability's high low voltage switchgear insulation structure. BACKGROUND

[0002] High low voltage switchgear is a kind of electrical equipment, for receiving and distributing electric energy, high voltage switch cabinet is mainly used in power system, the circuit with higher voltage (usually at 10kV and above) is controlled, protected and monitored, it contains high voltage circuit breaker, disconnecting switch, load switch, mutual inductor, arrester etc. Main components, can realize the opening and closing operation of high voltage line, fault protection and electric quantity measurement etc. Function.

[0003] In power system, high low voltage switchgear has the effect of distributing and controlling electric energy, however, the connecting part of bus copper bar and wiring terminal in electric cabinet is exposed, easy to cause the electric shock accident of operator's mistake touch, in addition, part of insulation material is relatively cumbersome in the process of dismounting, inconvenient for the safe operation of operator, for this, need to provide a kind of high reliability's high low voltage switchgear insulation structure, adopt shielding bus copper bar to conduct electricity, simultaneously cooperate with quick dismounting structure, shielding to bus copper bar and wiring terminal position base, to prevent the electric shock accident of operator's mistake touch. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of high reliability's high low voltage switchgear insulation structure, adopt shielding bus copper bar to conduct electricity, simultaneously cooperate with quick dismounting structure, shielding to bus copper bar and wiring terminal position base, to prevent the electric shock accident of operator's mistake touch, to solve the above technical problem.

[0005] The utility model solves the technical scheme as follows to the above technical problem: a kind of high reliability's high low voltage switchgear insulation structure, including distribution switch cabinet: the rear side of the inner chamber of distribution switch cabinet is fixedly installed with two installation base plates, the front side of installation base plate is fixedly connected with bus copper bar, the surface of bus copper bar is fixedly connected with insulating shell, the front side of insulating shell is provided with insulating guard plate, the front side of bus copper bar is provided with multiple wiring terminals, the both ends of the front side of insulating guard plate are fixedly connected with circular shell, the both ends of the front side of installation base plate are provided with locking assembly, the locking assembly includes the limit pin of sliding connection in the inner chamber of circular shell, the both ends of the front side of installation base plate are fixedly connected with sleeve.

[0006] Preferably, the inner chamber of the bus copper bar is slidably connected with a plurality of power connection blocks, the front side of the power connection block is fixedly connected with a bolt, and the surface of the bolt is threadedly connected with a nut.

[0007] Preferably, the terminal block is sleeved on the surface of the bolt, and the nut is pressed onto the surface of the terminal block.

[0008] Preferably, the bottom of both sides of the limiting pin is fixedly connected to a limiting protrusion, and the top and bottom of the sleeve surface are provided with arc-shaped sliding grooves that are adapted to the limiting protrusion.

[0009] Preferably, a limiting groove is provided on one side of the inner cavity of the arc-shaped slide groove, and the limiting protrusion is engaged in the inner cavity of the limiting groove.

[0010] Preferably, a spring is sleeved on the surface of the limiting pin, and the front end and rear end of the spring are welded to the limiting pin and the circular outer shell, respectively.

[0011] 1. The beneficial effects of this utility model are: This utility model uses the combination of busbar and junction block to connect multiple cables, and uses the locking component to install and fix the insulating shield. At the same time, the combination of insulating shell and insulating shield can insulate and shield the busbar and terminal block, thus achieving the purpose of facilitating installation and connection and insulating shield to prevent electric shock.

[0012] 2. This utility model uses bolts and nuts to lock and fix the terminals, and with the help of the connecting block, the terminals can be stably electrically connected to the busbar.

[0013] 3. This utility model uses the combination of limiting protrusion, arc-shaped sliding groove and limiting slot to connect and fix the limiting pin and sleeve, so that the insulating protective plate can be stably installed on the front side of the mounting base, thereby insulating and shielding the busbar and terminal block. Attached Figure Description

[0014] in:

[0015] Figure 1 This is a front view schematic diagram of one embodiment of the present utility model;

[0016] Figure 2 An exploded perspective view of the mounting substrate, busbar, insulating shell, and insulating protective plate according to one embodiment of the present invention;

[0017] Figure 3 This is one embodiment of the present utility model. Figure 2 A magnified view of point A in the middle;

[0018] Figure 4 This is a perspective view of the mounting base plate, insulating guard plate and locking assembly according to one embodiment of the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Power distribution switch cabinet; 2. Mounting base plate; 3. Busbar; 4. Insulating housing; 5. Insulating protective plate; 6. Connecting block; 7. Bolt; 8. Nut; 9. Locking assembly; 91. Limit pin; 92. Sleeve; 93. Limit button; 94. Arc-shaped groove; 95. Limit slot; 10. Circular housing; 11. Spring; 12. Cable. Detailed Implementation

[0021] In the following description, embodiments of the high- and low-voltage switchgear insulation structure of this invention will be presented with reference to the accompanying drawings.

[0022] Figures 1-4 This invention illustrates a highly reliable high- and low-voltage switchgear insulation structure according to an embodiment of the present invention, comprising a power distribution switchgear 1: two mounting base plates 2 are fixedly installed on the rear side of the inner cavity of the power distribution switchgear 1; a busbar 3 is fixedly connected to the front side of the mounting base plates 2; multiple contact blocks 6 are slidably connected to the inner cavity of the busbar 3; bolts 7 are fixedly connected to the front side of the contact blocks 6; nuts 8 are threadedly connected to the surface of the bolts 7; the bolts 7 and nuts 8 work together to lock and fix the terminals 12; simultaneously, with the cooperation of the contact blocks 6, the terminals 12 can be stably electrically connected to the busbar 3; an insulating shell 4 is fixedly connected to the surface of the busbar 3; an insulating protective plate 5 is provided on the front side of the insulating shell 4; multiple terminals 12 are provided on the front side of the busbar 3; the terminals 12 are sleeved on the surface of the bolts 7; nuts 8 are pressed onto the surface of the terminals 12; and circular shells are fixedly connected to both ends of the front side of the insulating protective plate 5. 10. Locking components 9 are provided at both ends of the front side of the mounting base 2. The locking components 9 include limiting pins 91 that are slidably connected to the inner cavity of the circular outer shell 10. A spring 11 is sleeved on the surface of the limiting pin 91. The front end and rear end of the spring 11 are welded to the limiting pin 91 and the circular outer shell 10, respectively. Sleeves 92 are fixedly connected to both ends of the front side of the mounting base 2. Limiting protrusions 93 are fixedly connected to the bottom of both sides of the limiting pin 91. The top and bottom of the sleeve 92 are provided with... The limiting protrusion 93 is matched with the arc-shaped slide groove 94. A limiting slot 95 is opened on one side of the inner cavity of the arc-shaped slide groove 94. The limiting protrusion 93 is engaged in the inner cavity of the limiting slot 95. Through the cooperation of the limiting protrusion 93, the arc-shaped slide groove 94 and the limiting slot 95, the limiting pin 91 and the sleeve 92 are connected and fixed, so that the insulating protective plate 5 can be stably installed on the front side of the mounting base plate 2, thereby insulating and shielding the busbar 3 and the terminal 12.

[0023] Working Principle: When using this invention, the user places the terminal 12 to be connected onto the surface of the bolt 7 and rotates the nut 8 to tighten and fix the terminal 12. At this time, the terminal 12 is electrically connected to the busbar 3. The busbar 3 is shielded by the insulating shell 4 to prevent the risk of accidental electric shock. After all the terminals 12 are connected to the busbar 3, the user covers the front of the mounting plate 2 with the insulating cover 5 and presses the limiting pin 91. The limiting pin 91 slides backward under pressure and enters the inner cavity of the arc-shaped groove 94, while simultaneously engaging the spring. Spring 11 is compressed, and then the user rotates the limiting pin 91 ninety degrees, causing the limiting protrusion 93 to slide from the inner cavity of the arc-shaped slide groove 94 into the inner cavity of the limiting slot 95. Then the limiting pin 91 is released, and the compressed spring 11 rebounds, pushing the limiting pin 91 forward. The limiting pin 91 drives the limiting protrusion 93 to slide forward, so that the limiting protrusion 93 is stably engaged in the limiting slot 95. The insulating protective plate 5 can then be installed and fixed. At this time, the busbar 3 and the terminal 12 are protected by the insulating shell 4 and the insulating protective plate 5, preventing the operator from accidentally touching the electric shock during operation.

[0024] In summary, the highly reliable high and low voltage switchgear insulation structure, through the combined use of the busbar 3 and the junction block 6, connects multiple cables. The locking component 9 secures the insulating plate 5. Simultaneously, the combined use of the insulating shell 4 and the insulating plate 5 provides insulation shielding for the busbar 3 and the terminal block 12, thus achieving the purpose of facilitating installation and connection while providing insulation shielding against electric shock.

Claims

1. A highly reliable insulation structure for high and low voltage switchgear, characterized in that, The switchgear includes a power distribution cabinet (1): two mounting base plates (2) are fixedly installed on the rear side of the inner cavity of the power distribution cabinet (1), a busbar (3) is fixedly connected to the front side of the mounting base plate (2), an insulating shell (4) is fixedly connected to the surface of the busbar (3), an insulating protective plate (5) is provided on the front side of the insulating shell (4), multiple wiring terminals (12) are provided on the front side of the busbar (3), a circular shell (10) is fixedly connected to both ends of the front side of the insulating protective plate (5), a locking assembly (9) is provided on both ends of the front side of the mounting base plate (2), the locking assembly (9) includes a limit pin (91) that is slidably connected to the inner cavity of the circular shell (10), and a sleeve (92) is fixedly connected to both ends of the front side of the mounting base plate (2).

2. The high- and low-voltage switchgear insulation structure with high reliability according to claim 1, characterized in that, The inner cavity of the busbar (3) is slidably connected with multiple electrical contact blocks (6), and the front side of the electrical contact block (6) is fixedly connected with a bolt (7), and the surface of the bolt (7) is threaded with a nut (8).

3. The high- and low-voltage switchgear insulation structure with high reliability according to claim 2, characterized in that, The terminal block (12) is sleeved on the surface of the bolt (7), and the nut (8) is pressed onto the surface of the terminal block (12).

4. The high-reliability high- and low-voltage switchgear insulation structure according to claim 3, characterized in that, The bottom of both sides of the limiting pin (91) is fixedly connected to the limiting protrusion (93), and the top and bottom of the sleeve (92) are provided with arc-shaped sliding grooves (94) that are adapted to the limiting protrusion (93).

5. The high- and low-voltage switchgear insulation structure with high reliability according to claim 4, characterized in that, A limiting groove (95) is provided on one side of the inner cavity of the arc-shaped slide (94), and the limiting protrusion (93) is engaged in the inner cavity of the limiting groove (95).

6. The high-reliability high- and low-voltage switchgear insulation structure according to claim 5, characterized in that, A spring (11) is fitted on the surface of the limiting pin (91), and the front end and rear end of the spring (11) are welded to the limiting pin (91) and the circular outer shell (10) respectively.

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