High-low voltage complete switch cabinet with isolation structure

Abstract

The utility model belongs to the field of switch cabinets, and particularly relates to a high-low voltage complete switch cabinet with an isolation structure, which comprises a high-voltage cabinet and a low-voltage cabinet, an isolation cabinet is arranged between the high-voltage cabinet and the low-voltage cabinet, and a high-voltage wiring end seat and a low-voltage wiring end seat of wiring ends of the high-voltage cabinet and the low-voltage cabinet penetrate into an inner cavity of the isolation cabinet; the relay mechanism comprises a relay connector arranged in the middle of the isolation cabinet, and relay poles with gaps are symmetrically mounted in the relay connector; a group of first circuit break structures and two groups of second circuit break structures are arranged at any one power supply access in the isolation cabinet, and the closing of the separation pole piece and the relay pole is the first circuit break structure as a whole, so that the whole power supply access can be cut off at the first time when a fault problem cannot be confirmed in time; when equipment in any one of the high-voltage cabinet and the low-voltage cabinet breaks down, the second circuit breaking structure close to the fault cabinet works, the switching pole is separated from the wiring end seat of the fault cabinet, and the fault position is accurately powered off to facilitate timely maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of switch cabinet, concretely relates to a high and low voltage complete switch cabinet with isolation structure. BACKGROUND

[0002] The high and low voltage complete switch cabinet is a power distribution equipment for power distribution, control, measurement and cable connection in the power supply system. Usually, the power supply bureau and the transformer substation use high voltage switch cabinets, which are connected to low voltage switch cabinets through transformers, and the low voltage switch cabinets are further distributed to each power distribution panel, control box and switch box.

[0003] The high voltage cabinet and the low voltage cabinet are directly connected through cables. When the equipment fails or the cable is damaged, it is difficult to maintain the fault line or the damaged cable in time. Moreover, when overheating combustion occurs, the adjacent cables are easily affected, and even the equipment in the high and low voltage cabinet is damaged. SUMMARY

[0004] (I) Utility model purpose

[0005] To solve the technical problems in the background art, the utility model provides a high and low voltage complete switch cabinet with an isolation structure, which has a wiring position isolation design and a multi-break control to prevent damage to the equipment in the high and low voltage cabinet.

[0006] (II) Technical scheme

[0007] To solve the above technical problems, the utility model provides a high and low voltage complete switch cabinet with an isolation structure, which includes a high voltage cabinet and a low voltage cabinet, and an isolation cabinet is arranged between the high voltage cabinet and the low voltage cabinet. The high voltage terminal seat and the low voltage terminal seat of the wiring end of the two are penetrated into the inner cavity of the isolation cabinet.

[0008] The relay mechanism includes a relay connector arranged in the middle part of the isolation cabinet, a relay pole column with a retention gap is symmetrically installed in the relay connector, a separation pole piece is inserted into the relay pole column, and the separation pole piece is controlled to move up and down by a relay cylinder.

[0009] The switching mechanism includes a cylinder arranged on one side of the high voltage terminal seat or the low voltage terminal seat, a movable piston rod is installed on the cylinder, a table is connected to the other end of the piston rod, a pole column frame is connected to the top of the table, and a switching pole column matched with the high voltage terminal seat or the low voltage terminal seat is penetrated into the pole column frame.

[0010] The closing mechanism includes a separation table installed above the pole column frame, a gas bag frame with a clamping groove is installed on the end face of the high voltage terminal seat or the low voltage terminal seat, and an inflatable gas bag is clamped in the gas bag frame.

[0011] Preferably, the combination of the high-voltage terminal seat, the switching pole, the relay pole, the partition pole and the low-voltage terminal seat is a power supply path.

[0012] Preferably, the closed combination of the partition pole and the relay pole is a first circuit breaking structure.

[0013] Preferably, the closed combination of the switching pole and the high-voltage terminal seat or the low-voltage terminal seat is a second circuit breaking structure.

[0014] Preferably, the switching pole is provided with a shell mounted on the pole frame.

[0015] Preferably, the air bag clamped in the air bag frame is inflated and deflated through an inflation valve.

[0016] Preferably, the isolation cabinet is provided with a ventilation device on one side, and an air guide fan is mounted on the ventilation device, and the air outlet end of the air guide fan penetrates into the inner cavity of the isolation cabinet.

[0017] The above technical scheme of the utility model has the following beneficial technical effects: a group of first circuit breaking structures and two groups of second circuit breaking structures are arranged at any power supply path in the isolation cabinet, the closed combination of the partition pole and the relay pole is a first circuit breaking structure, the power supply path of the whole can be cut off in time when the fault problem cannot be confirmed in time; when the equipment in any one of the high-voltage cabinet and the low-voltage cabinet fails, the second circuit breaking structure near the fault cabinet can work, the switching pole is separated from the terminal seat of the fault cabinet, and the fault position is accurately powered off to facilitate timely maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model;

[0019] Figure 2 It is a schematic view of the internal structure of the isolation cabinet of the utility model;

[0020] Figure 3 It is a structural schematic view of the switching mechanism of the utility model;

[0021] Figure 4 It is a schematic view of the external structure of the utility model.

[0022] Reference signs:

[0023] 1, high voltage cabinet; 11, high voltage terminal seat; 2, isolation cabinet; 3, low voltage cabinet; 31, low voltage terminal seat; 41, relay connector; 42, relay pole; 43, relay cylinder; 44, separation pole; 51, cylinder; 52, piston rod; 53, table; 54, pole frame; 55, shell; 56, switching pole; 61, separation table; 62, air bag frame; 63, air bag; 64, inflation valve; 71, ventilation device; 72, air blower. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0025] As shown in Figures 1-3 The utility model discloses a high low voltage complete switchgear with isolation structure, including high voltage cabinet 1 and low voltage cabinet 3, high voltage cabinet 1 and low voltage cabinet 3 are provided with isolation cabinet 2 between, and the high voltage terminal seat 11 and low voltage terminal seat 31 of the wiring terminal of both are all into the inner chamber of isolation cabinet 2.

[0026] The relay mechanism includes a relay connector 41 arranged in the middle part of the isolation cabinet 2, the relay connector 41 is symmetrically installed with a relay pole 42 with a gap, the relay pole 42 is inserted with a separation pole 44, and the separation pole 44 is controlled to move up and down on the relay cylinder 43.

[0027] The switching mechanism includes a cylinder 51 arranged on one side of the high voltage terminal seat 11 or the low voltage terminal seat 31, the cylinder 51 is installed with a movable piston rod 52, the other end of the piston rod 52 is connected with a table 53, the top of the table 53 is connected with a pole frame 54, and the pole frame 54 is penetrated with a switching pole 56 matched with the high voltage terminal seat 11 or the low voltage terminal seat 31.

[0028] The closing mechanism includes a separation table 61 installed above the pole frame 54, the end face of the separation table 61 towards the high voltage terminal seat 11 or the low voltage terminal seat 31 is installed with an air bag frame 62 with a clamping groove, and the air bag frame 62 is clamped with an inflatable air bag 63.

[0029] It should be noted that: taking any one line as an example, when the high voltage terminal seat 11, the switching pole 56, the relay pole 42, the separation pole 44 and the low voltage terminal seat 31 are in a closed state of communication, a power supply path is established between the high voltage cabinet and the low voltage cabinet.

[0030] In the embodiment, a first group of circuit breaking structures and two groups of second circuit breaking structures are arranged at any power supply path in the isolation cabinet 2. The closed whole of the separation pole 44 and the relay pole 42 is the first circuit breaking structure, and the on-off is switched by driving the separation pole 44 to move up and down by the relay cylinder 43. When the fault cannot be confirmed in time, the power supply path of the whole is cut off in the first time.

[0031] When the equipment in any one of the high-voltage cabinet 1 and the low-voltage cabinet 3 fails, the second circuit breaking structure close to the fault cabinet can be worked. The cylinder 51 drives the piston rod 52 connected to the table 53 to drive the pole column frame 54 to adjust the height. The switching pole 56 in the pole column frame 54 is separated from the terminal block of the fault cabinet, and the power supply to the fault position is accurately cut off to facilitate timely maintenance.

[0032] It can be understood that the closed whole of the switching pole 56 and the high-voltage terminal block 11 or the low-voltage terminal block 31 is the second circuit breaking structure.

[0033] In order to prevent the switching pole 56 from being exposed, further, the outside of the switching pole 56 is provided with a protective shell 55 installed on the pole column frame 54, and the protective shell 55 is an insulating member.

[0034] As shown in Figure 3 , the air bag 63 clamped in the air bag frame 62 is inflated and deflated through the inflation valve 64.

[0035] It should be noted that when any terminal block of the high-voltage terminal block 11 and the low-voltage terminal block 31 is exposed, there is a risk of arc discharge at the end. The air bag 63 close to the exposed terminal block is deflated through the inflation valve 64, and the air bag 63 deforms with the air bag frame 62, and the exposed terminal block is wrapped. Because it is an insulating structure, it can prevent arc from damaging other components.

[0036] As shown in Figure 4 , a ventilation device 71 is arranged on one side of the isolation cabinet 2, and an air guide fan 72 is installed on the ventilation device 71. The air outlet end of the air guide fan 72 penetrates into the inner cavity of the isolation cabinet 2.

[0037] In one embodiment, since the isolation cabinet 2 is a closed structure reserving only the high-voltage terminal block 11 and the low-voltage terminal block 31, a large amount of heat is generated in the cabinet due to the arrangement of multiple groups of cables and connection structures during operation. Long-term accumulation in the isolation cabinet 2 increases the risk of overheating and spontaneous combustion. Therefore, the ventilation device 71 is arranged, and the air exchange between the inside and outside of the isolation cabinet 2 is carried out by the air guide fan 72, so as to dissipate heat in the isolation cabinet 2, so as to reduce the influence of high temperature.

[0038] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A high- and low-voltage switchgear with an isolation structure, characterized in that, It includes a high-voltage cabinet (1) and a low-voltage cabinet (3), and an isolation cabinet (2) is provided between the high-voltage cabinet (1) and the low-voltage cabinet (3). The high-voltage terminal block (11) and the low-voltage terminal block (31) of the wiring terminals of the two cabinets are both inserted into the inner cavity of the isolation cabinet (2). The relay mechanism includes a relay connector (41) located in the middle of the isolation cabinet (2). A relay pole (42) with a gap is symmetrically installed inside the relay connector (41). A separator plate (44) is inserted into the relay pole (42). The separator plate (44) is controlled to move up and down by the relay cylinder (43). The switching mechanism includes a cylinder (51) disposed on one side of the high-voltage terminal block (11) or the low-voltage terminal block (31). A movable piston rod (52) is mounted on the cylinder (51). The other end of the piston rod (52) is connected to a support platform (53). A pole post frame (54) is connected to the top of the support platform (53). A switching pole post (56) that cooperates with the high-voltage terminal block (11) or the low-voltage terminal block (31) passes through the pole post frame (54). The sealing mechanism includes a partition platform (61) installed above the pole post (54), and the partition platform (61) has an airbag frame (62) with a clamping groove installed on the end face of the partition platform (61) facing the high voltage terminal block (11) or the low voltage terminal block (31), and the airbag frame (62) holds an inflatable airbag (63).

2. A high- and low-voltage switchgear with an isolation structure according to claim 1, characterized in that, The combination of the high-voltage terminal block (11), the adapter post (56), the relay post (42), the separator plate (44), and the low-voltage terminal block (31) forms a power supply path.

3. A high- and low-voltage switchgear with an isolation structure according to claim 1, characterized in that, The closed assembly of the separator electrode (44) and the relay electrode (42) is a first circuit breaker structure; The closed assembly of the adapter pole (56) and the high-voltage terminal block (11) or the low-voltage terminal block (31) constitutes a second circuit breaker structure.

4. A high- and low-voltage switchgear with an isolation structure according to claim 1, characterized in that, The outer side of the adapter pole (56) is provided with a protective shell (55) installed on the pole frame (54).

5. A high- and low-voltage switchgear with an isolation structure according to claim 1, characterized in that, The airbag (63) held in the airbag frame (62) is inflated and deflated by the inflation valve (64).

6. A high- and low-voltage switchgear with an isolation structure according to claim 1, characterized in that, A ventilation device (71) is provided on one side of the isolation cabinet (2), and an exhaust fan (72) is installed on the ventilation device (71). The exhaust end of the exhaust fan (72) penetrates into the inner cavity of the isolation cabinet (2).

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