CN214799026U

CN214799026U - Portable power supply device for key equipment control system

Info

Publication number: CN214799026U
Application number: CN202121067197.2U
Authority: CN
Inventors: 郭孝丽; 李步星
Original assignee: Shougang Changzhi Iron and Steel Co Ltd
Current assignee: Shougang Changzhi Iron and Steel Co Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-19
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a portable power supply device for a key equipment control system, which comprises a first input port and a second input port, wherein the first input port is provided with an input 1-way air switch, the input 1-way air switch is connected with one end of a control bidirectional controllable silicon, the first input port is provided with a 1-way bypass air switch, the second input port is provided with an input 2-way air switch, the input 2-way air switch is connected with one end of the control bidirectional controllable silicon, the second input port is provided with a 2-way bypass air switch, the portable power supply device for the key equipment control system utilizes a voltage detection element to detect the loss of power of a first-choice power supply, triggers the controllable silicon to switch to a standby circuit mode, completes the conversion in 10mS of alternating current cycle, the actual conversion time reaches within 5mS, and realizes the undisturbed switching, the problems that the switching of a common double-circuit power supply needs more than 100mS and the power supply is interrupted are solved.

Description

Portable power supply device for key equipment control system

Technical Field

The utility model relates to a power supply system technical field specifically is a be used for portable power supply unit of key equipment control system.

Background

The PLC or DCS control system of 12 sets of key equipment such as a blast furnace blower, a TRT generator, a converter primary dust removal fan, a coking cold blower, a steam boiler generator and the like in the market all use a single power supply to supply power, and a UPS storage battery continuously supplies power to complete related emergency operation after accidental power failure, so that the power supply of the control system is interrupted after the UPS fails. Once the power supply of the control system is failed and the power is cut off, the control system of the key equipment is disabled, the opening coil of the high-voltage circuit breaker cannot be interlocked to act under the condition that the shutdown condition is met, the operation of the high-voltage motor is stopped, and the core equipment is damaged due to continuous operation under the condition that the operation condition is not met. In order to ensure long-term stable operation of critical equipment, the equipment downtime without faults is reduced. The common method is to adopt dual power supplies for power supply, but a dual power transfer switch on the market mostly detects whether an electric trigger coil is electrified on a power supply side according to a detection element to drive a switch main contact to act, the transfer time is mostly more than 100mS and far exceeds a half cycle of sinusoidal alternating current by 10mS, certain hysteresis exists in the transfer, the power supply can be interrupted in a short time, and the continuity of power supply cannot be realized. In order to ensure that the two power supplies are not interrupted during switching, the two power supplies need to complete conversion within 10mS of a half cycle.

The existing control system power supply device cannot ensure long-term stable operation of key equipment, reduces equipment fault-free downtime, and improves the power supply continuity and stability of the control system.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for portable power supply unit of key equipment control system to solve the long-term steady operation of the assurance key equipment that provides in the above-mentioned background art, reduce the trouble-free down time of equipment, and improve the problem of control system power supply continuity, stability.

In order to achieve the above object, the utility model provides a following technical scheme: a portable power supply device for a key equipment control system comprises a first input port and a second input port,

the first path of input port is provided with an input 1-path air switch, the input 1-path air switch is connected to one end of the control bidirectional controllable silicon, the first path of input port is provided with a 1-path bypass air switch, and the other end of the 1-path bypass air switch is connected with the output port;

and the second input port is provided with an input 2-way air switch, the input 2-way air switch is connected to one end of the control bidirectional controllable silicon, the second input port is provided with a 2-way bypass air switch, and the other end of the 2-way bypass air switch is connected with the output port.

Preferably, the first input port is internally provided with A1, B1, C1, N1 and CND.

Preferably, the second input port is internally provided with a2, B2, C2, N2 and CND.

Preferably, the other end of the control bidirectional controllable silicon is connected with the output port through the output air switch.

Compared with the prior art, the beneficial effects of the utility model are that: the portable power supply device for the key equipment control system,

(1) the utility model discloses utilize voltage detection component to detect first-selected power after losing power, trigger the silicon controlled rectifier action and switch to reserve line mode, accomplish the conversion in a cycle of alternating current 10mS, the actual conversion time reaches within 5mS, realized undisturbed switching, solved ordinary double-circuit power switching need more than 100mS, the current situation that the power takes place to interrupt;

(2) the power supply switching mode of the utility model is 'break before make', which ensures that two power supplies can not be connected in parallel in any power environment, can realize the parallel connection of two power supplies with different phases or pressure difference, and can not generate short circuit or inrush current fault;

(3) the utility model discloses power supply requires two way powers to come from different power supply systems, and power supply can not need the same phase when parallelly connected, and can not take place the short circuit accident.

Drawings

FIG. 1 is a schematic view of the structure of the operation principle of the undisturbed switching device of the present invention;

FIG. 2 is a schematic structural diagram of the control system of the undisturbed switching device of the present invention;

fig. 3 is the schematic diagram of the waveform structure of the undisturbed switching device of the present invention.

In the figure: 1. the first path of input port, 2, the second path of input port, 3, input 1 path of idle switch, 4, input 2 paths of idle switch, 5, 1 path of bypass idle switch, 6, 2 paths of bypass idle switch, 7, control bidirectional thyristor, 8, output idle switch, 9, output port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a portable power supply device for a key equipment control system is disclosed, according to the figure 1, an input 1-way air opening 3 is arranged on a first-way input port 1, the input 1-way air opening 3 is connected with one end of a control bidirectional controllable silicon 7, a 1-way bypass air opening 5 is arranged on the first-way input port 1, the other end of the 1-way bypass air opening 5 is connected with an output port 9, an input 2-way air opening 4 is arranged on a second-way input port 2, A1, B1, C1, N1 and CND are arranged inside the first-way input port 1, A2, B2, C2, N2 and CND are arranged inside the second-way input port 2, two power supplies come from different power supply systems, the power supplies can be connected in parallel without phase and short circuit accidents, the input 2-way air opening 4 is connected with one end of the control bidirectional controllable silicon 7, a 2-way bypass air opening 6 is arranged on the second-way input port 2, and the other end of the 2-way bypass air opening 6 is connected with the output port 9, the other end of the control bidirectional controllable silicon 7 is connected with an output port 9 through an output air switch 8, and after the voltage detection element detects that the preferred power supply is out of power, the action of the controllable silicon is triggered to be switched to a standby circuit mode, so that the power supply device of the control system can continuously provide power support for equipment.

The working principle is as follows: the switching mode of the portable power supply device of the key equipment control system is 'break before make', the switching mode ensures that two power supplies cannot be connected in parallel in any power environment, and the parallel connection of two power supplies with different phases or voltage difference can be realized without short circuit or inrush current fault. When the portable power supply device of the key equipment control system is used, the input one path of air switch 3 and the input two paths of air switch 4 are both in a switch-on state, when the first path of input port 1 is set as a main power supply circuit, the device is automatically switched to the input two paths of input ports 2 by the bidirectional controllable silicon 7 to supply power (or can be selected not to be switched back) to the load 9 after the input one path of input port is in fault, and when the second path of input port 2 is set as a main power supply circuit, the device is automatically switched to the input one path of input port 1 by the bidirectional controllable silicon 7 to supply power (or can be selected not to be switched back) to the load 9 after the input two paths of input port 2 are in fault. The switching mode of the device has two options: the first, self-throwing and self-restoring, the second, self-throwing and non-self-restoring, according to the actual need can set up two kinds of switching modes by oneself.

Those not described in detail in this specification are within the skill of the art.

The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the invention.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A portable power supply apparatus for a critical equipment control system, comprising a first input port (1) and a second input port (2), characterized in that:

the first path of input port (1) is provided with an input 1 path of idle switch (3), the input 1 path of idle switch (3) is connected to one end of the control bidirectional controllable silicon (7), the first path of input port (1) is provided with a1 path of bypass idle switch (5), and the other end of the 1 path of bypass idle switch (5) is connected with an output port (9);

the bidirectional controllable silicon rectifier is characterized in that an input 2-way air switch (4) is arranged on the second input port (2), the input 2-way air switch (4) is connected to one end of a control bidirectional controllable silicon (7), a 2-way bypass air switch (6) is arranged on the second input port (2), and the other end of the 2-way bypass air switch (6) is connected with an output port (9).

2. The portable power supply apparatus for a critical device control system of claim 1, wherein: a1, B1, C1, N1 and GND are arranged inside the first input port (1).

3. The portable power supply apparatus for a critical device control system of claim 1, wherein: a2, B2, C2, N2 and GND are arranged in the second input port (2).

4. The portable power supply apparatus for a critical device control system of claim 1, wherein: the other end of the control bidirectional controllable silicon (7) is connected with an output port (9) through an output air switch (8).