CN215419162U - Low pressure bypass operation control box - Google Patents

Low pressure bypass operation control box Download PDF

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Publication number
CN215419162U
CN215419162U CN202121776279.4U CN202121776279U CN215419162U CN 215419162 U CN215419162 U CN 215419162U CN 202121776279 U CN202121776279 U CN 202121776279U CN 215419162 U CN215419162 U CN 215419162U
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CN
China
Prior art keywords
phase
low
circuit breaker
disconnecting link
voltage circuit
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Active
Application number
CN202121776279.4U
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Chinese (zh)
Inventor
邓代国
余涛
崔琳
王才永
谭业涛
黄琳榃
刘洪涛
李晨
邹彦
艾福洲
梁伟
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Yichang Power Supply Co of State Grid Hubei Electric Power Co Ltd
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Yichang Power Supply Co of State Grid Hubei Electric Power Co Ltd
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Priority to CN202121776279.4U priority Critical patent/CN215419162U/en
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Abstract

The utility model belongs to the technical field of power systems, and particularly relates to a low-voltage bypass live-line work control box. A low-voltage bypass live-wire work control box comprises a box body, a disconnecting link and a low-voltage circuit breaker; the method is characterized in that: the circuit comprises a switch, a switch and a switch, wherein 2 coil terminals of the switch is correspondingly connected with the switch and the switch; the auxiliary contacts of the 3 relays are connected in parallel and then connected in series with the battery and the alarm. The control box automatically alarms when the wiring is wrong, can prevent short circuit, prevent electric arcs from hurting people when the load is cut off and connected, and prevent override tripping when a bypass power supply area fails.

Description

Low pressure bypass operation control box
Technical Field
The utility model belongs to the technical field of electric power, and particularly relates to a low-voltage bypass live-wire work control box.
Background
The low-voltage power supply of the power distribution network is the last ring of safe and reliable power supply, the low-voltage transformation of the power distribution network is realized, the user access amount is large, the low-voltage line faults are low, more than 80% of the work orders of the national network 95598 system are low-voltage faults, and part of the low-voltage line faults cannot be repaired in time. The low pressure live working environment is complicated relatively, and the live working risk is great, develops a low pressure bypass live working control box now and improves low pressure live working safety, reduces to press and reforms transform, the user has a power failure under the circumstances such as user access, fault handling, improves the power supply reliability, increases the power supply volume, promotes the power consumption customer and obtains electric power happiness index.
Disclosure of Invention
The utility model aims to provide a low-voltage bypass operation control box which automatically alarms when a wiring error occurs.
In order to achieve the purpose, the utility model adopts the technical scheme that: a low-voltage bypass live-wire work control box comprises a box body, a disconnecting link and a low-voltage circuit breaker; the disconnecting link and the low-voltage circuit breaker are respectively arranged on a front side panel of the box body, the front side panel is provided with wire inlet side socket holes of an A1 phase, a B1 phase, a C1 phase and an N1 phase at the wire inlet side of the low-voltage circuit breaker, the wire inlet side socket holes of the A1 phase, the B1 phase, the C1 phase and the N1 phase are all positioned below the low-voltage circuit breaker, and a1 phase, a B1 phase, a C1 phase and an N1 phase at the wire inlet side of the low-voltage circuit breaker are respectively connected with the wire inlet side socket holes of the A1 phase, the B1 phase, the C1 phase and the N1 phase; the front side panel is provided with outlet side socket holes of an A2 phase, a B2 phase, a C2 phase and an N2 phase at the outlet side of the low-voltage circuit breaker, the outlet side socket holes of the A2 phase, the B2 phase, the C2 phase and the N2 phase are all positioned above the low-voltage circuit breaker, and the A2 phase, the B2 phase, the C2 phase and the N2 phase at the outlet side of the low-voltage circuit breaker are respectively connected with the outlet side socket holes of the A2 phase, the B2 phase, the C2 phase and the N2 phase; the A1 phase line at the incoming line side of the disconnecting link 4 is connected with the A1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker, the B1 phase line at the incoming line side of the disconnecting link is connected with the B1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker, and the C1 phase line at the incoming line side of the disconnecting link is connected with the C1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker; the A2 phase line on the outgoing line side of the disconnecting link is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker, the B2 phase line on the outgoing line side of the disconnecting link is connected with the B2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker, and the C2 phase line on the outgoing line side of the disconnecting link is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker;
the method is characterized in that: the circuit comprises a switch, a switch and a switch, wherein 2 coil terminals of the switch is correspondingly connected with the switch and the switch; the auxiliary contacts of the 3 relays are connected in parallel and then connected in series with the battery and the alarm.
The alarm is a voice alarm.
And current transformers are respectively arranged on the phase A2, the phase B2 and the phase C2 of the outgoing line side of the low-voltage circuit breaker, the current transformers are connected with an ammeter through a lead, and the ammeter is arranged on the front side panel.
4 universal traveling wheels are installed on the bottom panel of the box body.
And a pull rod is arranged on the rear panel of the box body.
The utility model has the beneficial effects that: the low-voltage bypass live-line work control box is popularized and applied to low-voltage live-line work, firstly, the safety of operators can be guaranteed, and live-line work can be switched to work in a power failure environment for a long time; the power supply reliability is improved, uninterrupted power supply is guaranteed through bypass power supply, the power supply reliability is improved, the electricity consumption of people is guaranteed, and the enterprise image and social benefits are improved; thirdly, when the wiring is wrong, the alarm is automatically given out, so that the short circuit can be prevented; fourthly, electric arcs generated when the load is cut off and connected are prevented from hurting people, and override tripping is prevented when a bypass power supply area fails; fifthly, the electricity selling quantity is increased, and the enterprise benefit is improved. The control box is simple and practical in structure, convenient to operate and maintain, low in investment, reusable and obvious in economic benefit.
Drawings
FIG. 1 is a perspective view of the housing of the present invention.
Fig. 2 is a front view of the case of the present invention.
Fig. 3 is a schematic diagram of the circuit of the present invention.
In the figure: the system comprises a box body 1, a pull rod 2, a traveling wheel 3, a disconnecting link 4, an alarm 5, an outlet side socket hole 6, an ammeter 7, a low-voltage circuit breaker 8, a front side panel 9, an inlet side socket hole 10, a relay 11, a mechanical interlocking device 12, a current transformer 13, an outlet side 14 and an inlet side 15.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, a low-voltage bypass live working control box includes a box body 1, a disconnecting link 4, and a low-voltage circuit breaker (or called as a switch) 8; the disconnecting link 4 and the low-voltage circuit breaker (or called as a circuit breaker) 8 are respectively installed on a front panel 9 of the box body 1, the front panel 9 is provided with inlet side socket holes 10 (corresponding to 4 inlet side socket holes) of an A1 phase, a B1 phase, a C1 phase and an N1 phase at the inlet side of the low-voltage circuit breaker 8, the inlet side socket holes 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase are all located below the low-voltage circuit breaker 8, and the inlet side socket holes 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase at the inlet side of the low-voltage circuit breaker 8 are respectively connected with the inlet side socket holes 10 of the A1 phase, the B1 phase, the C1 phase and the N1 phase; the front panel 9 is provided with outlet side socket holes 6 of a2 phase, a B2 phase, a C2 phase and an N2 phase at the outlet side of the low-voltage circuit breaker 8, the outlet side socket holes 6 of the A2 phase, the B2 phase, the C2 phase and the N2 phase are all positioned above the low-voltage circuit breaker 8, and the A2 phase, the B2 phase, the C2 phase and the N2 phase at the outlet side of the low-voltage circuit breaker 8 are respectively connected with the outlet side socket holes 6 of the corresponding A2 phase, the B2 phase, the C2 phase and the N2 phase; the A1 phase line at the incoming line side of the disconnecting link 4 is connected with the A1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, the B1 phase line at the incoming line side of the disconnecting link 4 is connected with the B1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8, and the C1 phase line at the incoming line side of the disconnecting link 4 is connected with the C1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker 8; the A2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, the B2 phase line on the outgoing line side of the disconnecting link 4 is connected with the B2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8, and the C2 phase line on the outgoing line side of the disconnecting link 4 is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker 8;
the circuit also comprises an alarm 5 and 3 relays 11, wherein 2 coil terminals of the first relay are respectively correspondingly connected with an A1 phase circuit on the wire inlet side of the disconnecting link 4 and an A2 phase circuit on the wire outlet side of the disconnecting link 4, 2 coil terminals of the second relay are respectively correspondingly connected with a B1 phase circuit on the wire inlet side of the disconnecting link 4 and a B2 phase circuit on the wire outlet side of the disconnecting link 4, and 2 coil terminals of the third relay are respectively correspondingly connected with a C1 phase circuit on the wire inlet side of the disconnecting link 4 and a C2 phase circuit on the wire outlet side of the disconnecting link 4; the auxiliary contacts (normally open contacts and normally closed contacts) of the 3 relays 11 are connected in parallel and then are connected in series with the battery and the alarm 5.
The alarm 5 is a voice alarm and can also be a loudspeaker. When the phases at the two sides of the switch are not corresponding, the relay is driven to act, the auxiliary contact is closed, the alarm is switched on to alarm in time to inform of a wiring error, and workers can correct the wiring error in time.
A2 phase, B2 phase and C2 phase circuits on the outgoing line side of the low-voltage circuit breaker 8 are respectively provided with a current transformer 13, the current transformer 13 is connected with an ammeter 7 through a lead, and the ammeter 7 is arranged on the front side panel 9 (the ammeter 7 is 3, and is positioned below the outlet side socket hole 6 and above the low-voltage circuit breaker 8).
The bottom panel of the box body 1 is provided with 3-4 traveling wheels (such as universal wheels) 3.
And a pull rod 2 is arranged on the rear panel of the box body 1. The pull rod is a telescopic pull rod 2.
And the mechanical interlocking device 12 is arranged on the operating mechanism of the disconnecting link 4 and the operating mechanism of the low-voltage circuit breaker 8.
The low-voltage bypass live-line work control box is a comprehensive control device integrating a low-voltage circuit breaker, a disconnecting link, an ammeter and an alarm, can be operated under the conditions of electrification and load, is automatically disconnected when a fault occurs, and avoids influencing the reliable power supply of related systems. The low-voltage bypass operation control box is convenient and flexible when being accessed, one control box can finish the access of a three-phase four-wire and single-phase power supply mode, and the line length is convenient to select. The automatic alarm device has the function of automatic alarm of the wiring phase, and can automatically alarm when the wiring is wrong, so that the short circuit is prevented. The draw-bar box type structure is convenient to transport and simple to manage.
The low-voltage circuit breaker 8 and the disconnecting link 4 of the low-voltage bypass live working control box are connected in parallel, the disconnecting link cannot be operated when the low-voltage circuit breaker 8 is disconnected, and the disconnecting link can be pulled and closed only after the low-voltage circuit breaker 8 is closed, so that the disconnecting link is effectively prevented from being pulled and closed under load. When the phases on the two sides of the low-voltage circuit breaker 8 are connected in a wrong mode, a pressure difference is generated, the voice alarm acts to remind a worker that the circuit breaker cannot be closed due to a wiring error. When the operation line and the bypass are operated in parallel, the control box disconnecting link is closed, so that the condition that the low-voltage circuit breaker 8 is operated and the upper-level switch does not operate in the process of removing (connecting) the operation line by a worker is prevented, and the electric arc of the on-load disconnection line is prevented from hurting the worker. Before the bypass power supply, the current protection of the low-voltage circuit breaker 8 is adjusted according to the load current, when the bypass power supply is carried out, the low-voltage circuit breaker 8 is closed, the disconnecting link is pulled open, the supplied load is tripped during the fault, and the power supply of a superior power supply is not influenced.

Claims (4)

1. A low-voltage bypass live-wire work control box comprises a box body (1), a disconnecting link (4) and a low-voltage circuit breaker (8); the disconnecting link (4) and the low-voltage circuit breaker (8) are respectively installed on a front side panel (9) of the box body (1), the front side panel (9) is provided with wire inlet side socket holes (10) of an A1 phase, a B1 phase, a C1 phase and an N1 phase on a wire inlet side of the low-voltage circuit breaker (8), the wire inlet side socket holes (10) of the A1 phase, the B1 phase, the C1 phase and the N1 phase are all located below the low-voltage circuit breaker (8), and a1 phase, a B1 phase, a C1 phase and an N1 phase on the wire inlet side of the low-voltage circuit breaker (8) are respectively connected with the corresponding wire inlet side socket holes (10) of the A1 phase, the B1 phase, the C1 phase and the N1 phase; outlet side socket holes (6) of an A2 phase, a B2 phase, a C2 phase and an N2 phase at the outlet side of the low-voltage circuit breaker (8) are arranged on the front side panel (9), the outlet side socket holes (6) of the A2 phase, the B2 phase, the C2 phase and the N2 phase are all positioned above the low-voltage circuit breaker (8), and A2 phase, B2 phase, C2 phase and N2 phase lines at the outlet side of the low-voltage circuit breaker (8) are respectively connected with the outlet side socket holes (6) of the A2 phase, the B2 phase, the C2 phase and the N2 phase; a1 phase line at the incoming line side of the disconnecting link (4) is connected with an A1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker (8), B1 phase line at the incoming line side of the disconnecting link (4) is connected with a B1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker (8), and C1 phase line at the incoming line side of the disconnecting link (4) is connected with a C1 phase line routing conductor at the incoming line side of the low-voltage circuit breaker (8); the A2 phase line on the outgoing line side of the disconnecting link (4) is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker (8), the B2 phase line on the outgoing line side of the disconnecting link (4) is connected with the B2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker (8), and the C2 phase line on the outgoing line side of the disconnecting link (4) is connected with the A2 phase line routing conductor on the outgoing line side of the low-voltage circuit breaker (8);
the method is characterized in that: the circuit comprises a disconnecting link (4), a switch (2), an alarm (5) and 3 relays (11), wherein 2 coil terminals of the first relay are respectively correspondingly connected with an A1 phase circuit on the incoming line side of the disconnecting link (4) and an A2 phase circuit on the outgoing line side of the disconnecting link (4), 2 coil terminals of the second relay are respectively correspondingly connected with a B1 phase circuit on the incoming line side of the disconnecting link (4) and a B2 phase circuit on the outgoing line side of the disconnecting link (4), and 2 coil terminals of the third relay are respectively correspondingly connected with a C1 phase circuit on the incoming line side of the disconnecting link (4) and a C2 phase circuit on the outgoing line side of the disconnecting link (4); the auxiliary contacts of the 3 relays (11) are connected in parallel and then connected in series with the battery and the alarm (5).
2. The low voltage bypass live working control box according to claim 1, wherein: a2 phase, B2 phase and C2 phase circuits on the outgoing line side of the low-voltage circuit breaker (8) are respectively provided with a current transformer (13), the current transformer (13) is connected with an ammeter (7) through a lead, and the ammeter (7) is arranged on a front side panel (9).
3. The low voltage bypass live working control box according to claim 1, wherein: 4 universal traveling wheels (3) are installed on the bottom panel of the box body (1).
4. The low voltage bypass live working control box according to claim 1, wherein: the rear panel of the box body (1) is provided with a pull rod (2).
CN202121776279.4U 2021-07-30 2021-07-30 Low pressure bypass operation control box Active CN215419162U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121776279.4U CN215419162U (en) 2021-07-30 2021-07-30 Low pressure bypass operation control box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121776279.4U CN215419162U (en) 2021-07-30 2021-07-30 Low pressure bypass operation control box

Publications (1)

Publication Number Publication Date
CN215419162U true CN215419162U (en) 2022-01-04

Family

ID=79655408

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121776279.4U Active CN215419162U (en) 2021-07-30 2021-07-30 Low pressure bypass operation control box

Country Status (1)

Country Link
CN (1) CN215419162U (en)

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