CN219980437U - Mine power supply box - Google Patents

Abstract

The present disclosure relates to a mine power box comprising: the box body is configured into a closed structure with one end face capable of being opened and closed; the power supply is arranged in the box body; the power strip is arranged on the outer side of the box body and connected with a power supply; the contactor comprises a first normally open switch connected between the power supply and the power strip and a control module for controlling the opening and closing of the first normally open switch; the temperature control regulator is connected with the control module and used for opening the first normally open switch when the temperature reaches a preset value; and the leakage protector is connected between the power strip and the power supply. The temperature control regulator is arranged in the mine power supply box, so that the temperature in the box can be detected in real time, and the power supply can be automatically cut off when the line temperature and the temperature in the box are too high due to the occurrence of short circuit or overload and other conditions, so that the protection effect is realized; in addition, the on-off between the power supply and the power strip can be indirectly controlled through the arrangement of the contactor, and the operation is safe and simple.

Description

Mine power supply box

Technical Field

The disclosure relates to the field of underground mining charging, in particular to a mine power supply box.

Background

In the field of mineral exploitation, because the wellhead is narrow, the equipment is time-consuming and labor-consuming to carry, and therefore, the electrical equipment is usually required to be powered or charged underground.

However, the downhole environment is complex and there are some hazards to the power usage. For example, when charging or supplying electricity underground, equipment and a mine power box are often in an unattended state, overload or short circuit easily occurs, so that the temperature of a line is too high to cause fire or even explosion. In addition, when the existing mine power supply box needs to disconnect the power strip from the power supply, the switch between the power strip and the power supply needs to be directly closed manually, and the danger coefficient is high, so that the mine power supply box which can safely supply power underground and is easy to open and close is urgently needed.

Disclosure of Invention

It is an object of the present disclosure to provide a mine power box to at least partially address the problems in the related art.

To achieve the above object, the present disclosure provides a mine power box comprising: the box body is configured into a closed structure with an end face capable of being opened and closed; the power supply is arranged in the box body; the power strip is arranged on the outer side of the box body and is connected with the power supply; the contactor comprises a first normally open switch connected between the power supply and the power strip and a control module for controlling the opening and closing of the first normally open switch; the temperature control regulator is connected with the control module and used for opening the first normally open switch when the temperature reaches a preset value; and the leakage protector is connected between the power strip and the power supply.

Optionally, the control module includes a first coil connected to the power supply, and a first circuit and a second circuit connected between the first coil and the power supply and connected in parallel with each other, where the first circuit includes a normally open start switch, and the second circuit includes a second normally open switch, and the first coil is used for driving the first normally open switch and the second normally open switch to be closed after being electrified.

Optionally, the control module further comprises a normally closed stop switch connected between the power supply and the first coil.

Optionally, the mine power box further comprises a time relay connected in series in the second line and a second coil connected in parallel with the first coil, wherein the time relay is configured to be in a normally closed state, and the second coil is used for selectively opening the time relay.

Optionally, the mine power box further comprises a transfer switch connected in parallel with the time relay for selectively switching the time relay into circuit.

Optionally, the mine power box further comprises a scram switch connected between the power source and the first coil.

Optionally, the temperature control regulator includes a temperature sensor and a high-temperature disconnection contact that are connected to each other, the high-temperature disconnection contact is connected in series in the second line, and the high-temperature disconnection contact is configured to be in a normally closed state.

Optionally, the mine power box further comprises a heating element connected with the power supply.

Optionally, the mine power box further comprises a first indicator light connected in parallel with the power strip.

Optionally, the mine power box further comprises a second indicator light connected to the power supply, the control module further comprises a normally closed switch connected between the second indicator light and the power supply, and the first coil is used for driving the normally closed switch to be opened after being electrified.

Through the technical scheme, the temperature control regulator is arranged in the mine power supply box, so that the temperature in the box can be detected in real time, and the power supply can be automatically cut off when the line temperature and the temperature in the box are too high due to the occurrence of short circuit or overload and other conditions, so that the protection effect is achieved; in addition, the on-off between the power supply and the power strip can be indirectly controlled through the arrangement of the contactor, direct contact with high-voltage electricity is avoided, and the operation is safe and simple.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a circuit diagram of a mine power box, shown schematically in accordance with the present disclosure.

Description of the reference numerals

100-box body; 200-power supply; 300-power strip; 401-a first line; 402-a second line; 410-a first normally open switch; 421-a first coil; 422-a second normally open switch; 423-activating a switch; 424-stop switch; 425-normally closed switch; 500-a temperature control regulator; 510—a temperature sensor; 520-high temperature open contacts; 600-leakage protector; 700-time relay; 701-a second coil; 800-change-over switch; 900-emergency stop switch; 1000-heating element; 1100-a first indicator light; 1200-second indicator light.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In the present disclosure, unless otherwise indicated, terms of orientation such as "inner and outer" are used based on the structure of the relevant components themselves, for example: the "outside" of the case refers to a position outside the accommodation space of the case; the "inside" of the case means in the accommodation space of the case.

In addition, in this disclosure, the terms "first," "second," etc. are used to distinguish one element from another without sequence or importance. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated.

Referring to fig. 1, the present disclosure provides a mine power box including a box body 100, a power source 200 disposed in the box body 100, a strip 300 disposed at an outer side of the box body 100 and connected with the power source 200, a contactor, a temperature control regulator 500, and a leakage protector 600 connected between the strip 300 and the power source 200. The box 100 is configured as a closed structure with a switchable end surface, so that when the box is opened, the internal circuit and the electrical components are replaced and detected, and when the box is used, the plug of the power strip 300 extends into the box 100 to be connected with the power supply 200. The contactor includes a first normally open switch 410 connected between the power source 200 and the strip 300 and a control module for controlling the opening and closing of the first normally open switch 410, and the opening and closing of the first normally open switch 410 can be indirectly controlled through the control module. The temperature control regulator 500 is connected to the control module for opening the first normally open switch 410 when the temperature reaches a preset value. The present disclosure does not limit the preset value of the temperature, and it may be 50 °, 60 °, or the like. In addition, the present disclosure also does not limit the specific composition of the control module of the contactor, as long as it can selectively control the switching of the first normally open switch 410, and the specific composition will be described below, and will not be repeated here.

The power supply 200 refers to a neutral wire and a live wire preset in the box 100, so that the power strip 300 can be electrified after being connected with the power strip 300, and further, the power supply can charge or supply power to power components in a mine. The neutral and hot wires may be powered from the well.

The present disclosure does not limit the types and numbers of the power strip 300, and may be a power strip with a switch, a multifunctional power strip, a serial power strip, and the like. The number of the power strip 300 may be one, two, or the like as long as it can be connected to the power source 200 and transmit electric power to the electric devices.

By using the above technical scheme, the temperature control regulator 500 is arranged in the mine power supply box to detect the temperature in the box body 100 in real time, so that the first normally open switch 410 can be automatically controlled to cut off the connection between the power supply 200 and the power strip 300 when the line temperature is caused by short circuit or overload or the like or the temperature in the box body 100 is too high, thereby playing a role in protection; in addition, the contactor is arranged, the on-off between the power supply 200 and the power strip 300 can be indirectly controlled through the control module, a direct contact high-voltage circuit is not needed, and the operation is safe and simple.

Referring to fig. 1, in an embodiment of the present disclosure, a control module may include a first coil 421 connected to a power source 200, and a first line 401 and a second line 402 connected in parallel with each other between the first coil 421 and the power source 200. Wherein the first line 401 may include a normally open start switch 423, and the second line 402 may include a second normally open switch 422, and the first coil 421 is configured to drive the first normally open switch 410 and the second normally open switch 422 to be closed after being energized. When the power supply 200 and the power strip 300 need to be turned on in use, the start switch 423 is controlled (e.g. pressed) to be turned on, so that the first coil 421 is turned on with the power supply 200, and the first coil 421 can drive the first normally open switch 410 and the second normally open switch 422 to be turned on. Since the start switch 423 is a normally open switch, it is automatically reset to an on state after the external driving force (e.g., pressing force) is removed. At this time, since the second normally open switch 422 is in the closed state, i.e., the second line 402 is turned on, the first line 401 may continuously operate to keep the first normally open switch 410 in the closed state all the time, i.e., the power supply 200 and the strip 300 are always turned on.

The surface of the case 100 may be provided with an actuation key connected to the actuation switch 423. When the power strip is required to be started, the starting key is only pressed, and the first normally open switch 410 connected between the power supply 200 and the power strip 300 is closed by pressing the starting key, so that the operation is simple and safe.

Referring to fig. 1, in an embodiment of the present disclosure, the control module may further include a normally closed stop switch 424 connected between the power supply 200 and the first coil 421. When it is desired to disconnect power supply 200 from strip 300, stop switch 424 need only be controlled (e.g., pressed) to be in an open state. At this time, the first coil 421 is powered off, and no longer acts on the first normally open switch 410 and the second normally open switch 422, and the first normally open switch 410 and the second normally open switch 422 may be automatically reset to the open state, that is, the power supply 200 and the power strip 300 are disconnected. And, the stop switch 424 may be automatically reset to the closed state after the external driving force (e.g., pressing force) is removed. Similar to the above-described start key, the surface of the case 100 may be provided with a stop key connected to the stop switch 424, and the stop key may be pressed only when the connection between the power supply 200 and the strip 300 is to be cut off, so that the operation is simple and safe.

To enable time-long charging or time-long powering of powered devices when left unattended, referring to fig. 1, in an embodiment of the disclosure, the mine power box may further include a time relay 700 in series in a second line 402 and a second coil 701 in parallel with the first coil 421. Wherein the time relay 700 may be configured in a normally closed state, the second coil 701 is used to selectively open the time relay 700. In use, the time relay 700 can be set at a fixed time according to actual requirements, and after reaching a preset time, the second coil 701 drives the time relay 700 to be switched from a closed state to an open state. At this time, the second circuit 402 is disconnected, and thus the first coil 421 is disconnected from the power supply 200, and no longer acts on the first normally open switch 410 and the second normally open switch 422, and the first normally open switch 410 and the second normally open switch 422 can be reset to the open state, that is, the power supply 200 and the power strip 300 are disconnected. And the second coil 701 is also de-energized itself, and no longer acts on the time relay 700, the time relay 700 may be reset to the closed state.

The present disclosure does not limit the timing duration of the time relay 700, which may be adaptively set according to actual requirements, and may be, for example, one hour, three hours, or the like. Accordingly, a timing device corresponding to the second coil 701 may be provided on the outer wall of the case 100, which may be of an electronic input type, a screw type, or the like, and the present disclosure is not limited thereto.

In actual use, if a worker can watch the whole process of supplying or charging, the time relay 700 does not need to be connected into the circuit. In an embodiment of the present disclosure, the mine power box may also include a transfer switch 800 in parallel with the time relay 700 for selectively accessing the time relay 700 into the circuit. A change-over key corresponding to the change-over switch 800 may be provided on the surface of the case 100, by which the change-over switch 800 may be closed and the time relay 700 may be opened, i.e., the time relay 700 may not be connected to a circuit. When the time relay 700 needs to be connected to the circuit, the change-over switch 800 can be opened by the change-over key, and the time relay 700 is closed to be connected to the circuit. By the design, the time relay 700 can be flexibly switched according to the actual use condition, and the operation is simple and convenient.

Referring to fig. 1, in an embodiment of the present disclosure, the mine power box may further include a scram switch 900 connected between the power source 200 and the first coil 421. When an emergency occurs, the emergency stop switch 900 is controlled to be in an on state, i.e. the connection between the first coil 421 and the power supply 200 can be cut off, so that the first normally open switch 410 is reset to an on state, and the connection between the power strip 300 and the power supply 200 is disconnected.

It should be noted that, the emergency stop switch 900 differs from the stop switch 424 described above in that: the stop switch 424 automatically returns to the closed state after the external force is removed. And the emergency stop switch 900 needs to be manually reset to the closed state. Accordingly, an emergency stop key corresponding to the emergency stop switch 900 may be provided on the outer wall of the case 100, and only the emergency stop key may be pressed when emergency stop is required.

Referring to fig. 1, in an embodiment of the present disclosure, a temperature-controlled regulator 500 may include a temperature sensor 510 and a high-temperature disconnection contact 520 connected to each other. A high temperature break contact 520 may be connected in series in the second line 402, with the high temperature break contact 520 configured to be normally closed. In use, if the temperature in the line, the box 100 increases due to overload or short circuit, etc., the temperature sensor 510 may monitor the temperature change, and when the line temperature or the temperature in the box 100 reaches a preset value, the high temperature disconnection contact 520 may be automatically disconnected to disconnect the first coil 421 from the power supply 200, and further, the first normally open switch 410 is reset to an open state to disconnect the power supply 200 and the strip 300. The high temperature disconnection point 520 is referred to herein as a device that is disconnected when the temperature reaches a preset value, and will not be described too much since the structure and principle thereof are well known to those skilled in the art.

Because of the greater electrical safety hazards of the wet downhole environment, referring to fig. 1, in an embodiment of the present disclosure, the mine power box may further include a heating element 1000 connected to the power source 200. The inside of the cabinet 100 is kept dry by the heat generated by the operation of the heating member 1000. The operation time and the operation power (heat generation power) of the heating member 1000 can be adjusted according to the actual situation, and the present disclosure is not limited thereto.

The present disclosure does not limit the kind of the heating member 1000 so long as it can generate heat to keep the inside of the case 100 dry, for example, in the embodiment of the present disclosure, the heating member 1000 may be a heating plate connected to the power source 200. In addition, in other embodiments, the heating element 1000 may be a heating wire connected to the power source 200.

Referring to fig. 1, in an embodiment of the present disclosure, the mine power box may further include a first indicator light 1100 connected in parallel with the strip 300. The first indicator light 1100 is used for displaying the working state of the power strip 300. Specifically: when the first normally open switch 410 is closed, the first indicator light 1100 is turned on with the power supply 200, and then the first indicator light 1100 is turned on, which indicates that the power strip 300 is in an energized state; when the first normally open switch 410 is turned on, the first indicator light 1100 is disconnected from the power source, and then the first indicator light is turned off, which indicates that the power strip 300 is in a power-off state.

Referring to fig. 1, in an embodiment of the present disclosure, the mine power box may further include a second indicator light 1200 connected to the power source 200, and the control module may further include a normally closed switch 425 connected between the second indicator light 1200 and the power source 200. Wherein the first coil 421 is used for driving the normally closed switch 425 to open after being electrified. So designed, when the first coil 421 is energized, the first normally open switch 410 is closed and the normally closed switch 425 is open. At this time, the power strip 300 is in an energized state, and the second indicator lamp 1200 is turned off. Conversely, when the first coil 421 is powered off, the power strip 300 is in the power-off state, and the second indicator light 1200 is turned on.

It should be noted that, fig. 1 is an internal circuit diagram of the mine power box, and a plurality of keys, knobs, etc. (e.g., the above-mentioned scram key, start key, etc.) may be provided on an outer wall of the box 100 for controlling respective components shown in the circuit of fig. 1, which will not be explained herein.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. A mine power box, comprising:

the box body is configured into a closed structure with one end face capable of being opened and closed;

the power supply is arranged in the box body;

the power strip is arranged on the outer side of the box body and is connected with the power supply;

the contactor comprises a first normally open switch connected between the power supply and the power strip and a control module for controlling the opening and closing of the first normally open switch;

the temperature control regulator is connected with the control module and used for opening the first normally open switch when the temperature reaches a preset value; and

and the electric leakage protector is connected between the power strip and the power supply.

2. The mine power box of claim 1, wherein the control module includes a first coil connected to the power source and first and second wires connected in parallel with each other between the first coil and the power source, wherein the first wire includes a normally open start switch and the second wire includes a second normally open switch, the first coil being configured to drive the first and second normally open switches closed upon energization.

3. The mine power box of claim 2, wherein the control module further comprises a normally closed stop switch connected between the power source and the first coil.

4. The mine power box of claim 2, further comprising a time relay in series in the second line and a second coil in parallel with the first coil, wherein the time relay is configured to be normally closed and the second coil is configured to selectively open the time relay.

5. The mine power box of claim 4, further comprising a transfer switch in parallel with the time relay for selectively switching the time relay into circuit.

6. The mine power box of claim 2, further comprising a scram switch connected between the power source and the first coil.

7. The mine power box of claim 2, wherein the temperature control regulator includes a temperature sensor and a high temperature disconnect contact connected to each other, the high temperature disconnect contact being in series in the second line, and the high temperature disconnect contact being configured to be normally closed.

8. The mine power box of claim 1, further comprising a heating element connected to the power source.

9. The mine power box of claim 1, further comprising a first indicator light in parallel with the power strip.

10. The mine power box of claim 2, further comprising a second indicator light connected to the power source, the control module further comprising a normally closed switch connected between the second indicator light and the power source, wherein the first coil is configured to drive the normally closed switch on upon energization.