CN205430044U - Power supply control box and high-voltage power supply for suppressing power-on surge current - Google Patents

Abstract

The utility model discloses a power supply control box of electric impulse current on suppression, including input, output and respectively with parallelly connected first branch road and the second branch road of output is provided with time relay on the first branch road, is provided with the contactor on the second branch road, time relay's node setting on the second branch road and establish ties with the contactor, is provided with resistance on the circuit between second branch road and output, and the main node and the resistance of contactor are parallelly connected. The utility model also discloses a high voltage power supply of power supply control box including restraining last electric impulse current. The utility model discloses a power supply control box cluster goes into between large capacity isolation transformer and the power cabinet for go up electric shock current in the twinkling of an eye and be restrained, and can not influence the supply current that the circuit got into after the stable state. The power supply box with the structure has the characteristics of small volume and low manufacturing cost, and can be applied to high-voltage power supplies of large nuclear fusion devices and other occasions with overlarge electrifying impact current.

Description

Power supply control box and high-voltage power supply for suppressing power-on surge current

technical field

The utility model relates to the field of high-voltage power supplies, in particular to a power supply control box which provides industrial frequency power supply for a main loop power supply module of a high-voltage power supply and can suppress the power-on surge current of the main loop power supply module. The utility model also relates to a power supply control box including the power supply High voltage power supply for the control box.

Background technique

At present, large-scale nuclear fusion devices at home and abroad use various auxiliary heating methods to carry out plasma heating and current drive experiments, and the required high-voltage power supply voltage is gradually increasing. At present, this high-voltage power supply is mostly composed of multiple switching power supply modules. Since each power supply module works independently and the potentials of each power supply module are inconsistent, each module needs to be powered independently, so a large number of isolation transformers are used to supply power to each switching power supply module. Usually, the primary side of all isolation transformers gets energy from the secondary side of a large-capacity isolation transformer, and the primary side of the large-capacity isolation transformer gets power from the power cabinet. At the moment when the module is powered on, because there are a large number of isolation transformers in the circuit, the power-on surge current is very large, far exceeding the current required by the module when it is normal, causing the air switch to trip frequently.

Utility model content

The technical problem solved by the utility model is the frequent tripping of the air switch of the power supply module caused by the excessive power-on surge current, and further provides a power supply control box capable of suppressing the power-on surge current. The utility model also provides a power supply control box including the power supply High voltage power supply for the control box.

In order to solve the problems of the technologies described above, the technical scheme adopted by the utility model is as follows:

A power supply control box for suppressing power-on surge current, comprising an input end, an output end, and a first branch and a second branch respectively connected in parallel with the output end, and a time relay is arranged on the first branch, so A contactor is arranged on the second branch, the node of the time relay is arranged on the second branch and connected in series with the contactor, and the circuit between the second branch and the output terminal is arranged There is a resistor, and the main node of the contactor is connected in parallel with the resistor.

Preferably, the power supply control box further includes a third branch connected in parallel with the output end, and the auxiliary node of the contactor and the display lamp are arranged in series on the third branch.

Preferably, the resistor is a parallel resistor formed by connecting multiple resistors in parallel.

Preferably, the power supply control box further includes a chassis.

Preferably, the chassis is made of epoxy board.

Preferably, a signal output terminal of a power-on node is drawn out from the contactor.

The utility model also provides a high-voltage power supply including the power supply control box for suppressing power-on surge current. It includes a power supply cabinet, a power transformer and a power supply control box, wherein the input end of the power supply control box is connected to the power supply cabinet, and the output end of the power supply control box is connected to the power supply transformer.

Preferably, the high-voltage power supply further includes a logic control system, and the contactor has a power-on node signal output terminal, and the power-on node signal output terminal is connected to the logic control system.

The beneficial effects of the utility model are as follows:

The power supply control box of the utility model is connected in series between the large-capacity isolation transformer and the power supply cabinet, so that the impact current at the moment of power-on is suppressed, and the power supply current after the circuit enters a steady state will not be affected, and the power supply control of the utility model The box has the characteristics of small size and low cost, and can be applied to the high-voltage power supply of large-scale nuclear fusion devices and other occasions where the power-on impulse current is too large.

Description of drawings

Fig. 1 is the circuit schematic diagram of the power supply control box of the utility model that suppresses the power-on surge current;

Fig. 2 is a schematic diagram of the structure of the rear panel of the power supply control box for suppressing the power-on inrush current of the present invention;

Fig. 3 is a schematic diagram of the structure of the front panel of the power supply control box for suppressing the power-on inrush current of the utility model;

In the picture:

1 terminal, 2 node of time relay, 3 auxiliary node of contactor, 4 main node of contactor, 5 terminal, 6 resistor, 7 time relay, 8 contactor, 9 display lamp, 10 terminal, 11 terminal , 12 terminals, 13 terminals, 14 chassis.

detailed description

The technical solutions and beneficial effects of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to accompanying drawing 1, a kind of power supply control box of the present utility model suppresses power-on surge current, comprises input end, output end and the first branch circuit and the second branch circuit that are connected in parallel with the output terminal respectively, set on the first branch circuit There is a time relay 7, a contactor 8 is arranged on the second branch, the node of the time relay 7 is arranged on the second branch and connected in series with the contactor 8, and a resistor 6 is arranged on the circuit between the second branch and the output end , the main node of the contactor 8 is connected in parallel with the resistor 6 .

In order to be able to visually observe the current working state of the power supply control box, set the third branch in parallel with the output end, and set the auxiliary node of the contactor 8 and the indicator light 9 in series on the third branch, when the contactor 8 is working , the display lamp 9 lights up, indicating that the power supply control box has entered a stable working state.

The setting of the resistor 6 is to suppress the impact circuit, and the resistor 6 can be set as a parallel resistor formed by connecting multiple resistors in parallel as required.

In the utility model, a cabinet 14 can be set for the power supply control box, and the cabinet 14 can be made of insulating materials such as epoxy boards.

In order to allow the control system of the high-voltage power supply using the power supply control box to know the current working status of the power supply control box, the contactor 8 leads to the output terminal of the power-on node signal and sends it to the logic control system of the high-voltage power supply to notify the remote All modules of the computer high-voltage power supply have been powered on.

The utility model also provides a high-voltage power supply including the above-mentioned power supply control box for suppressing power-on surge current, for a high-voltage power supply including a power supply cabinet and a power transformer, such as the high-voltage power supply including a large-capacity isolation transformer in the aforementioned large-scale nuclear fusion device Power supply, in order to suppress the power-on current of the power transformer, the power supply control box of the present utility model is connected in series between the power transformer and the power cabinet, its input end is connected with the power cabinet, and its output end is connected with the power transformer.

As shown above, when the high-voltage power supply also includes a logic control system, the contactor 8 can lead to a power-on node signal output terminal, so that the power-on node signal output terminal is connected to the logic control system to notify the logic control system of the remote computer. All modules of the system high-voltage power supply have been powered on.

The working process of the power supply control box of the present utility model is as follows:

At the moment when the power supply control box is powered on, the time relay 7 is put into operation and starts timing. The inrush current in the circuit is suppressed by the resistor 6 connected in series in the circuit. Putting into operation, the main node 4 of the contactor 8 is closed to cut off the circuit where the resistor 6 is located, the auxiliary node 3 of the contactor 8 is closed to light up the display lamp 9 on the panel, and the power supply control box enters a steady state.

Referring to accompanying drawing 2, accompanying drawing 3 is a specific example of the present utility model, comprises chassis 14, contactor 8, time relay 7, display lamp 9, resistor 6, terminal post 1, 5, 10, 11, 12, 13 etc. Reasonable combination and layout of components. Components such as a contactor 8, a time relay 7, and a plurality of parallel resistors are installed in the chassis 14, and display lights 9 and 6 binding posts are installed on the panel of the chassis 14, and two incoming line binding posts 1, 10 are connected to the power cabinet. There are two outgoing terminal posts 5 and 11 connected to the primary side of the large-capacity isolation transformer, and the other two terminal posts 12 and 13 lead out the power-on node signal from the contactor 8 in the chassis and send it to the logic control system of the high-voltage power supply for Notifies the remote computer that all modules of the high voltage power supply are powered on.

When making the power supply control box of the present utility model, an epoxy board with a suitable size can be cut out first according to the size of the bottom of the cabinet and the size of the panel, and the mounting holes can be processed on the epoxy board, and then the bottom epoxy board can be installed on the bottom of the cabinet, Install the terminal strip on the epoxy board, install multiple resistors in parallel on the epoxy board, install the time relay and contactor on the terminal strip, install the terminal on the rear panel of the chassis, and install the display lamp on the front panel of the chassis Finally, connect the time relay, contactor, resistor, display lamp and terminal according to the schematic diagram.

Those skilled in the art will appreciate that the embodiments described here are to help readers understand the principle of the utility model, and it should be understood that the protection scope of the utility model is not limited to such specific statements and examples. Those skilled in the art can research and make various other specific modifications and combinations based on the technical revelations disclosed in the utility model without departing from the essence of the utility model, and these variations and combinations are still within the protection scope of the utility model.

Claims (8)

1. the power supply power supply control case suppressing power-on impact current, it is characterized in that: include input, outfan and the first branch road in parallel with described outfan respectively and the second branch road, the time relay (7) it is provided with on described first branch road, catalyst (8) it is provided with on described second branch road, the node (2) of the described time relay (7) is arranged on described second branch road and connects with described catalyst (8), resistance (6) it is provided with on circuit between described second branch road and described outfan, the host node (4) of described catalyst (8) and described resistance (6) are in parallel.

2. suppress the power supply power supply control case of power-on impact current as claimed in claim 1, it is characterized in that: described power supply power supply control case also includes threeth branch road in parallel with described outfan, described 3rd branch road is arranged in series auxiliary node (3) and the display lamp (9) of described catalyst (8).

3. suppress the power supply power supply control case of power-on impact current as claimed in claim 1, it is characterised in that: described resistance (6) is the parallel resistance of multiple resistor coupled in parallel.

4. suppress the power supply power supply control case of power-on impact current as claimed in claim 1, it is characterised in that: described power supply power supply control case also includes cabinet (14).

5. suppress the power supply power supply control case of power-on impact current as claimed in claim 4, it is characterised in that: described cabinet (14) uses epoxy plate to make.

6. as according to any one of claim 1 to 5, suppress the power supply power supply control case of power-on impact current, it is characterised in that: lead to, on described catalyst (8), the node signal outfan that powers on.

7. a high voltage power supply, described high voltage power supply includes power cabinet, mains transformer and the power supply power supply control case as described in any one in claim 1-5, the input of wherein said power supply power supply control case is connected with described power cabinet, and the outfan of described power supply power supply control case is connected with described mains transformer.

8. high voltage power supply as claimed in claim 7, it is characterized in that: described high voltage power supply also includes logic control system, leading to, on described catalyst (8), the node signal outfan that powers on, this node signal outfan that powers on is connected with described logic control system.