CN217085085U - Bus power supply indicating device of explosion-proof electrical equipment - Google Patents

Abstract

The utility model relates to a bus power supply indicating device of explosion-proof electrical equipment, belonging to the technical field of bus power supply indicating devices of explosion-proof electrical equipment; the technical problem to be solved is as follows: the improvement of the hardware structure of the bus power supply indicating device of the explosion-proof electrical equipment is provided; the technical scheme for solving the technical problems is as follows: the display device comprises a sensor module, wherein the sensor module is provided with three sensors which are respectively connected with A, B, C three phases of bus incoming lines, an isolation module, a sensitive element, a conversion element and a conversion circuit are respectively integrated in the sensors, a display module connecting wire is connected with a first outgoing line terminal of the sensor module through a second incoming line terminal, and a display module connecting wire is connected with an electric mortise lock of a door cover through a second outgoing line terminal; the utility model discloses be applied to explosion-proof electrical switch in the pit.

Description

Bus power supply indicating device of explosion-proof electrical equipment

Technical Field

The utility model provides a bus power supply indicating device of explosion-proof electrical equipment belongs to explosion-proof electrical equipment's bus power supply indicating device technical field.

Background

Along with the continuous improvement of the mechanization and automation degree of coal mine production, electrical equipment is widely used, the underground power supply capacity is continuously increased, and higher requirements are put forward on the reliability and the safety of an underground power supply system.

Along with the continuous promotion of mine output and automation level, the stable and reliable operation of explosion-proof electrical equipment in pit is more and more important, and equipment such as high-pressure vacuum distribution device, feed switch, starter, mobile substation that the working face used in the pit, each equipment cooperates mutually and constitutes power supply system network in the pit, can protect motor and power supply line.

The traditional explosion-proof electrical equipment only judges whether the cavity is electrified or not through a display screen interface. When the existing mining equipment is opened for maintenance, the display screen is powered off, the equipment does not have an element for visually monitoring the internal voltage of the equipment, the wire inlet side in the cavity of the body is sometimes electrified, and the potential danger is very easy to cause electric shock injury accidents; secondly, when the power supply of the main loop or the control loop has a problem, a worker can not quickly find the problem by overhauling according to own experience, and the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: the improvement of the hardware structure of the bus power supply indicating device of the explosion-proof electrical equipment is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: a bus power supply indicating device comprises a sensor module and a display module, wherein the sensor module comprises three sensors which correspond to A, B, C three phases of an incoming line power grid respectively, and divides the high voltage of a charged body through a high-voltage silica gel line to take out part of electric energy to the sensors;

the sensor module comprises a sensor module, a display module, a control circuit board, an isolation module, a sensitive element, a conversion element and a conversion circuit, wherein the control circuit board is arranged inside three sensors in the sensor module;

the display module connecting wire is connected with a first wire outlet terminal of the sensor module through a second wire inlet terminal, and the display module connecting wire is connected with the electric mortise lock on the door cover of the explosion-proof electrical equipment through a second wire outlet terminal;

the display module is provided with three power indicator lamps for displaying the three-phase electrified condition, the power indicator lamps are set to be not on under the condition that a bus is not electrified and become a normally-on state when incoming lines are electrified, and the power indicator lamps are respectively connected with a second incoming line terminal of the display module through leads;

the front of explosion-proof electrical equipment is provided with the observation window, the observation window aims at the last pilot lamp setting of display module.

The integrated connecting wire of the sensor module is connected with the bus voltage input end, and the sensing element in the sensor can sense electromagnetic signals, so that the function of indicating different voltage grades in a coal mine is met.

The display module comprises a second wire inlet terminal and a second wire outlet terminal for controlling the electric mortise lock.

And a high-voltage input side loop of the sensor module is respectively connected with a bus voltage input end of the explosion-proof switch through a lead and is used for ensuring that the display module can display a three-phase electrified state when the equipment has voltage.

The bus voltage input end is specifically an input end/output end of a device with the function of an isolating switch.

And the second outlet terminal of the display module is connected with the electric mortise lock, and the state of the electric mortise lock is controlled to meet the requirement of a cover which can not be opened electrically.

The utility model discloses beneficial effect for prior art possesses does:

1. compared with the prior art that the electrified state of the circuit is displayed through a voltage transformer, the bus power supply indicating device of the utility model has the advantages that the high-brightness indicating lamp of the electrified indicator is more visual, is more suitable for complex and messy working conditions in the pit, and can also avoid the condition that the electrified state of the current circuit cannot be displayed after the display screen fails;

2. compared with the traditional method of displaying the electrified state of a loop through a voltage transformer, the bus power supply indicating device can meet the requirements of different voltage grades, and has wider application range;

3. compared with the voltage transformer which displays the electrified state of the loop, the utility model has the advantages that the power indicator is connected with the mortise lock on the door, the door cover can not be opened under the condition of no power failure, and the safety is improved;

4. the utility model discloses compare in voltage transformer demonstration voltage state, bus power supply indicating device can use according to product actual operation operating mode and actual shutting demand is nimble, can satisfy the inside electric shutting of equipment, also can satisfy the electric interlocking between equipment and the higher level.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic structural view of the present invention;

in the figure: the device comprises a sensor module 1, a display module 2, a first wire outlet terminal 3, a second wire inlet terminal 4, a second wire outlet terminal 5, a bus voltage input terminal 6, an electric mortise lock 7 and a power indicator light 8.

Detailed Description

As shown in fig. 1, the utility model provides a bus power supply indicating device is a bus power supply indicating device that is used for explosion-proof electrical equipment in colliery to use in pit, as shown in fig. 1, including sensor module 1, display module 2 and circuit design triplex, bus power supply indicating device's lectotype includes: the sensor adopts high-voltage line to accord with national standard from the area wiring, and display module 2 exports electric mortiser lock normally open contact all the way, and power indicator 8 is high bright, whole safe and reliable. The sensor module 1 comprises three sensors, the sensors sense and convert high voltage in the main loop, output the high voltage to the display module 2, and display the electrified condition of the circuit through the power indicator lamp 8. The display module 2 leads out a pair of contact points for controlling the electric mortise lock 7, so that the cover can be opened only under the condition of power failure, and dangerous operations such as electrified cover opening are avoided.

The sensor module 1 comprises three sensors which correspond to A, B, C three phases of an incoming line power grid respectively, high voltage of a charged body is divided through a high-voltage silica gel line, and a part of electric energy is taken out to be supplied to the sensors. The three sensors are internally provided with control circuit boards, the control circuit boards are respectively integrated with an isolation module, a sensitive element, a conversion element and a conversion circuit, three-phase electricity is transmitted to the control circuit boards through high-voltage silica gel wires, and the isolation module isolates the high-voltage electricity to prevent the sensor modules from being damaged by the high-voltage electricity; the sensitive element senses an electromagnetic signal, the conversion element converts the electromagnetic signal into an electric signal, the electric signal is amplified and modulated through the conversion circuit and is input into the display module 2 through the first wire outlet terminal 3, and the power indicator light 8 reflects the electrified condition of a circuit. Explosion-proof electrical equipment designs an observation window, and display module 2 installs behind the observation window, and whether the staff in the pit can each return circuit voltage of the swift check equipment of directly perceived normal, can confirm the position rapidly and solve the problem when the open circuit trouble appears in the circuit, improves production efficiency.

The power indicator 8 uses a high-intensity light bulb, a plastic-encapsulated shell. When the internal circuit of the device has voltage, the power indicator lamp 8 of the power indicator device is highlighted, and when the main circuit has single-phase earth fault, one-phase bulb which is earthed in the corresponding three-phase indicator lamp can be extinguished. The utility model is convenient for the user to visually observe the voltage running state of each loop, and can visually observe the voltage state of each loop when in cover opening inspection or wiring, thereby avoiding safety accidents; when faults such as open circuit and the like occur in the internal loop of the equipment, the open circuit loop can be effectively and accurately positioned, and maintenance personnel can conveniently maintain the open circuit loop. The design is implemented and applied, a stable guarantee is provided for the underground working face of the coal mine, and the high-efficiency production and the safety and reliability of coal mine enterprises are improved.

A pair of normally open contacts are led out from display module 2, and electric mortiser lock 7 is used and is unblanked for the outage generally in the colliery explosion-proof product in the pit, and when bus power supply had electricity, 5 contact states of second leading-out terminal were become the normal close by normally opening, and the door closure was pinned in the electric mortiser lock action, can't open the door closure when guaranteeing that the cavity has electricity, avoided dangerous operations such as electrified maintenance, electrified uncapping.

The bus power supply indicating device is flexible in application, namely can be applied to the outgoing line side of a device with an isolation function, and meets the electrical locking function of the switch; the switch can be applied to the wire inlet side of a device with an isolation function, the electrical interlocking function between the switch and a superior switch is met, the switch can be opened after the superior power failure is ensured, and the requirement of remote operation regulations is met.

The utility model discloses mainly have following advantage:

(1) the sensor module 1 is packaged with a high-voltage lead, and an isolation module is arranged in the sensor module, so that the input high voltage cannot influence low-voltage display;

(2) the input side of the bus power supply indicating device is connected with the wire inlet side of the device with the isolation function, so that the device with the voltage bus power supply indicating device at the upper level can display the three-phase voltage state; the bus power supply indicating device is also connected to the outgoing line side of the device with the isolation function, so that the bus power supply indicating device can be matched with the configuration display screen to effectively display the live condition of the switch;

(3) the electric mortise lock 7 of the door cover can ensure that the door cover cannot be opened under the condition of power, thereby improving the safety and reliability of workers during maintenance.

About the utility model discloses what the concrete structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the connection mode of parts, module, specific components and parts that appear all belong to the prior art such as the published patent that technical staff can acquire before the application day, published journal paper, or common general knowledge, need not to describe in detail for the technical scheme that the present case provided is clear, complete, realizable, and can be according to this technical means or obtain corresponding entity product.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (6)

1. The utility model provides a bus power indicating device of explosion-proof electrical equipment, includes sensor module (1) and display module (2), its characterized in that: the sensor module (1) comprises three sensors which correspond to A, B, C three phases of an incoming line power grid respectively, the high voltage of a charged body is divided by a high-voltage silica gel line, and a part of electric energy is taken out and is supplied to the sensors;

the sensor comprises a sensor module (1), wherein control circuit boards are arranged inside three sensors in the sensor module (1), an isolation module, a sensitive element, a conversion element and a conversion circuit are integrated on each control circuit board, the sensor module (1) is connected with a bus voltage input end (6) through a connecting wire, and the connecting wire of the sensor module (1) is connected with a second wire inlet terminal (4) of a display module (2) through a first wire outlet terminal (3);

the display module (2) is connected with a connecting wire through a second wire outlet terminal (5) and an electric mortise lock (7) on the door cover of the explosion-proof electrical equipment;

the three power indicator lamps (8) for displaying the three-phase electrified condition are arranged on the display module (2), and the power indicator lamps (8) are connected with the second incoming line terminals (4) of the display module (2) through wires respectively.

2. The bus power indicator of explosion-proof electrical equipment as set forth in claim 1, wherein: the front side of the explosion-proof electrical equipment is provided with an observation window, and the observation window is aligned with a power indicator (8) on the display module (2).

3. The bus power indicator of explosion-proof electrical equipment as set forth in claim 1, wherein: a high-voltage input side loop of the sensor module (1) is respectively connected with a bus voltage input end (6) of the explosion-proof electrical equipment through a lead, and a three-phase electrified state is displayed on the display module (2) when the equipment is under voltage.

4. The bus power indicator of explosion-proof electrical equipment as set forth in claim 1, wherein: the bus voltage input end (6) is specifically an input end/output end of a device with the function of an isolating switch.

5. The bus power indicator of explosion-proof electrical equipment as set forth in claim 1, wherein: the isolation module on the control circuit board inside the sensor isolates high voltage electricity; the sensing element senses an electromagnetic signal, the conversion element converts the electromagnetic signal into an electric signal, the electric signal is amplified and modulated through the conversion circuit, and the electric signal is input into the display module (2) through the first wire outlet terminal (3).

6. The bus power indicator of explosion-proof electrical equipment as set forth in claim 1, wherein: and a pair of normally open contacts led out from the display module (2) are connected with the second outgoing line terminal (5) and then connected with the electric mortise lock (7).

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