CN213125124U - Mine explosion-proof intelligent high-voltage complete set distribution device - Google Patents

Abstract

The utility model relates to a mining flame-proof type intelligence high pressure complete set distribution device, including four kinds of functional unit, be inlet wire unit, PT isolation unit, feeder unit and bus tie unit respectively, wherein the feeder unit can increase and decrease according to user demand quantity, and the feeder unit is provided with m, and m is for being equal to or being greater than 2's integer. The utility model discloses following beneficial effect has: the utility model discloses can reach the purpose that the colliery is power supply systematized complete set of in pit was designed, effectively solve the technical problem that present colliery is power supply in the pit exists, improve the reliability of power supply, satisfy the demand of the automatic intelligent development of mine. Meanwhile, the functional units are mutually independent and do not influence each other, the units are compactly connected, the occupied space of the equipment is reduced, and the multifunctional electric heating device is suitable for popularization and use.

Description

Mine explosion-proof intelligent high-voltage complete set distribution device

Technical Field

The utility model relates to a mining flame-proof type intelligence high pressure complete set distribution device belongs to mining distribution equipment technical field.

Background

With the continuous promotion of the mechanized, automatic and informatization levels of coal production in China, and the continuous investment of various heavy equipment and new equipment, the scale of a coal mine power grid is larger and larger, and the operation environment is more complex. At present, an explosion-proof high-voltage vacuum power distribution device is generally adopted in domestic coal mines and is used for controlling, protecting and measuring an underground power supply system with a three-phase alternating current neutral point which is not directly grounded. The device has the defects of backward structure, poor contact between the moving contact and the static contact, unreliable protection action, low intelligent degree, low insulation level and the like, and can not meet the requirement of the development of a mine power supply system.

SUMMERY OF THE UTILITY MODEL

According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: in order to solve one of the problems, the flame-proof type intelligent high-voltage complete power distribution device for the mine is provided.

Mining flame-proof type intelligence high pressure complete set distribution device, its characterized in that: the multifunctional feeder comprises four functional units, namely an incoming line unit, a PT isolation unit, a feeder line unit and a bus tie unit, wherein the number of the feeder line units can be increased or decreased according to the number of using requirements, the number of the feeder line units is m, and m is an integer equal to or larger than 2.

Preferably, including bus connection unit, I section inlet wire unit, I section feeder unit, I section PT keep apart unit, II section inlet wire units, II section feeder units and II sections PT keep apart the unit, bus connection unit one end is connected with I section PT keep apart the unit, and the other end is connected with II sections PT keep apart the unit, I section PT keeps apart the other end of unit and is connected with I section inlet wire unit through first generating line, and II sections PT keep apart the other end of unit and is connected with II sections inlet wire units through the second generating line, still be connected with I section feeder unit on the first generating line, still be connected with II sections feeder units on the second generating line, I section feeder unit is provided with n, and n is the integer that equals or is greater than 1, II sections feeder units are provided with x, and x is the integer that equals or is greater than 1.

Preferably, the bus bar connection unit is used as a power distribution unit for connecting or disconnecting two sections of bus bar power supplies, and a set of insulated bus bars is arranged in the bus bar connection unit and is turned over upwards for connecting the bus bars at two ends.

Preferably, I section PT isolation unit and II section PT isolation unit are installed in the both sides of bus contact unit, through two station isolator to and the design of turning up of unit internal insulation bus, realize the isolation raising function of bus.

Preferably, the incoming line and bus connection unit is integrated with a vacuum arc extinguish chamber to form an integrated switch device by using a two-station isolating switch; the feeder line unit adopts an isolation grounding three-position switch and vacuum arc extinguish chamber integrated switch device; the PT isolating unit integrated switch equipment is a two-station isolating switch.

Preferably, the first section of PT isolation unit includes an explosion-proof housing of the first section of PT isolation unit and a first section of PT isolation unit circuit installed in the explosion-proof circuit of the first section of PT isolation unit, the first section of PT isolation unit circuit includes a voltage transformer YHa, a voltage transformer YHb, a voltage transformer YHc, a power transformer, a contactor KM1, a relay KA1, a UPS power supply and a circuit breaker QF, the secondary side of the voltage transformer YHa, the voltage transformer YHb and the voltage transformer YHc sets up the relay KA1, the secondary side of the power transformer sets up the contactor KM1, the voltage transformer YHa, the voltage transformer YHb, the voltage transformer YHc and the relay KA1 and the power transformer and the contactor KM1 are provided with the circuit breaker QF, the first end of the circuit breaker QF is respectively connected with the first ends of the voltage transformer YHa, the voltage transformer YHb, the voltage transformer YHc and the power transformer, and the first end of the, The other ends of the voltage transformer YHb, the voltage transformer YHc and the power transformer are grounded, one end of the UPS is connected with the first normally-open contact of the contactor KM1 and the second normally-open contact of the contactor KM1, the load side of the power transformer is divided into two paths, one portion of the two paths is connected with the UPS box, and the other portion of the two paths is connected with the small bus to provide power for the undervoltage tripping coil of each unit circuit breaker.

Preferably, the bus bar connection unit comprises a bus bar connection unit explosion-proof shell and a bus bar connection unit circuit arranged in the bus bar connection unit explosion-proof shell; the I-section wire inlet unit comprises an I-section wire inlet unit explosion-proof shell and an I-section wire inlet unit circuit arranged in the I-section wire inlet unit explosion-proof shell; the I-section feeder unit comprises an I-section feeder unit explosion-proof shell and an I-section feeder unit circuit arranged in the I-section feeder unit explosion-proof shell; the second section of wire inlet unit comprises a second section of wire inlet unit explosion-proof shell and a second section of wire inlet unit circuit arranged in the second section of wire inlet unit explosion-proof shell; the second feeder unit comprises a second feeder unit explosion-proof shell and a second feeder unit circuit arranged in the second feeder unit explosion-proof shell; the first section of PT isolation unit is the same as the second section of PT isolation unit, and the second section of PT isolation unit comprises a second section of PT isolation unit explosion-proof shell and a second section of PT isolation unit circuit arranged in the second section of PT isolation unit explosion-proof shell.

Preferably, II section inlet wire unit explosion-proof casings include the casing and articulate the chamber door on the casing, and upper portion is equipped with explosion-proof independent secondary wiring chamber in the casing, adopts mining explosion-proof binding post to be connected between secondary wiring chamber and the main cavity, and the main part cavity adopts the guard plate to cut apart out appearance chamber and circuit breaker chamber two parts, goes up an explosion-proof cavity of bus-bar chamber, lower cable chamber and circuit breaker chamber sharing.

Preferably, explosion-proof joint surfaces are arranged on the surfaces of the shells on the two sides of the cavity of the circuit breaker, the explosion-proof shells are sewn in an explosion-proof mode through fastening bolts in the shells, and the side buses in explosion-proof design are connected with sockets and plugs for the platform, so that the functional units are combined and compactly connected.

Preferably, the back of the shell is provided with two round holes, one of which is provided with an elbow, and the other of which is plugged by a round flange cover plate.

Preferably, the explosion-proof shell of the PT isolation unit, the explosion-proof shell of the bus connection unit, the explosion-proof shell of the incoming line unit, the explosion-proof shell of the feeder line unit, and the explosion-proof shell of the PT isolation unit have the same structure.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses can reach the purpose that the colliery is power supply systematized complete set of in pit was designed, effectively solve the technical problem that present colliery is power supply in the pit exists, improve the reliability of power supply, satisfy the demand of the automatic intelligent development of mine. Meanwhile, the functional units are mutually independent and do not influence each other, the units are compactly connected, the occupied space of the equipment is reduced, and the multifunctional electric heating device is suitable for popularization and use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of the system of the present invention;

FIG. 2 is an electrical schematic diagram of the PT isolation unit of the present invention;

FIG. 3 is a schematic diagram of the working power supply of the present invention;

FIG. 4 is a schematic view of the structure of the explosion-proof housing of the present invention;

fig. 5 is a schematic view-front view of the explosion-proof housing of the present invention;

fig. 6 is a rear view of the explosion-proof housing of the present invention;

fig. 7 is a schematic view of the upward lifting of the insulated bus bar of the present invention;

fig. 8 is a schematic view of the combination of the present invention.

In the figure: 1. bus tie unit 2, I section inlet wire unit 3, I section feeder unit 4, I section PT keeps apart unit 5, II sections inlet wire unit 6, II sections feeder unit 7, II sections PT keeps apart unit 8, bus tie unit explosion-proof circuit 9, I section inlet wire unit explosion-proof circuit 10, I section feeder unit explosion-proof circuit 11, I section PT keeps apart unit explosion-proof circuit 12, II sections inlet wire unit explosion-proof circuit 13, II sections feeder unit explosion-proof circuit 14, II sections PT keeps apart unit explosion-proof circuit 21, secondary wiring chamber 22, instrument chamber 23, circuit breaker chamber 24, go up bus cavity 25, lower cable chamber 26, elbow 27, small-size cable introducing device 28, explosion-proof joint face 29, side hinge.

Detailed Description

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

the present invention is further described with reference to the following specific embodiments, which are not intended to limit the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Examples

As shown in fig. 1-8, the mining flameproof intelligent high-voltage complete distribution device comprises four functional units, namely an incoming line unit, a PT isolation unit, a feeder line unit and a bus tie unit, wherein the feeder line units can be increased or decreased according to the number of using requirements, the number of the feeder line units is m, and m is an integer equal to or greater than 2.

In the embodiment, the device comprises a bus tie unit 1, a section I incoming line unit 2, a section I feeder line unit 3, a section I PT isolation unit 4, a section II incoming line unit 5, a section II feeder line unit 6 and a section II PT isolation unit 7, one end of the bus bar connection unit 1 is connected with the first section PT isolation unit 4, the other end is connected with the second section PT isolation unit 7, the other end of the first section of PT isolation unit 4 is connected with the first section of wire inlet unit 2 through a first bus, the other end of the second section of PT isolation unit 7 is connected with the second section of wire inlet unit 5 through a second bus, the first bus is also connected with a section I of feeder unit 3, the second bus is also connected with a section II of feeder unit 6, the number of the first section of feeder line units 3 is n, n is an integer equal to or greater than 1, the number of the second section of feeder line units 6 is x, and x is an integer equal to or greater than 1; the bus connection unit 1 is used as a power distribution unit for connecting or disconnecting two sections of bus power supplies, and a set of insulated buses are arranged in the bus connection unit and are turned upwards for connecting buses at two ends; the first section of PT isolation unit 4 and the second section of PT isolation unit 7 are arranged on two sides of the bus connection unit 1, and the isolation and promotion functions of the buses are realized through two-station isolation switches and an upturning design of insulated buses in the units; the incoming line and bus connection unit adopts a two-station isolating switch and is integrated with a vacuum arc extinguish chamber to form an integrated switch device; the feeder line unit adopts an isolation grounding three-position switch and vacuum arc extinguish chamber integrated switch device; the PT isolation unit integrated switch equipment is a two-station isolation switch; section I PT keeps apart unit 4 includes section I PT and keeps apart unit explosion-proof housing and installs section I PT in section I PT keeps apart unit explosion-proof circuit, section I PT keeps apart unit circuit and includes voltage transformer YHa, voltage transformer YHb, voltage transformer YHc, power transformer, contactor KM1, relay KA1, UPS power, circuit breaker QF, voltage transformer YHa, voltage transformer YHb, voltage transformer YHc's secondary side sets up relay KA1, power transformer's secondary side sets up contactor KM1, voltage transformer YHa, voltage transformer YHb, between voltage transformer YHc and the relay KA1 and power transformer and contactor KM1 are provided with circuit breaker QF, and circuit breaker QF's first end is connected with voltage transformer YHa, voltage transformer YHb, voltage transformer YHc, power transformer's first end respectively, and voltage transformer YHa, The other ends of the voltage transformer YHb, the voltage transformer YHc and the power transformer are grounded, one end of the UPS is connected with the first normally-open contact of the contactor KM1 and the second normally-open contact of the contactor KM1, the load side of the power transformer is divided into two paths, one part of the two paths is connected with the UPS box, and the other part of the two paths is connected with the small bus to provide power for the undervoltage tripping coil of each unit breaker; the bus connection unit 1 comprises a bus connection unit explosion-proof shell and a bus connection unit circuit arranged in the bus connection unit explosion-proof shell; the I-section wire inlet unit 2 comprises an I-section wire inlet unit explosion-proof shell and an I-section wire inlet unit circuit arranged in the I-section wire inlet unit explosion-proof shell; the I-section feeder unit 3 comprises an I-section feeder unit explosion-proof shell and an I-section feeder unit circuit arranged in the I-section feeder unit explosion-proof shell; the second-section wire inlet unit 5 comprises a second-section wire inlet unit explosion-proof shell and a second-section wire inlet unit circuit arranged in the second-section wire inlet unit explosion-proof shell; the second feeder unit 6 comprises a second feeder unit explosion-proof shell and a second feeder unit circuit arranged in the second feeder unit explosion-proof shell; the first section of PT isolation unit 4 and the second section of PT isolation unit 7 are identical in structure, and the second section of PT isolation unit 7 comprises a second section of PT isolation unit explosion-proof shell and a second section of PT isolation unit circuit arranged in the second section of PT isolation unit explosion-proof shell; the explosion-proof shell of the II-section wire inlet unit comprises a shell and a cavity door hinged on the shell, an explosion-proof independent secondary wiring cavity 21 is arranged at the upper part in the shell, the secondary wiring cavity is connected with a main cavity by a mining explosion-proof wiring terminal, the main cavity is divided into an instrument cavity 22 and a breaker cavity 23 by a protection plate, and an upper bus cavity 24, a lower cable cavity 25 and the breaker cavity 23 share one explosion-proof cavity; explosion-proof joint surfaces 28 are arranged on the surfaces of the shells on the two sides of the cavity of the circuit breaker, the sewing between the explosion-proof shells is realized in a mode of fastening bolts inside the shells, and the combination and compact connection between the functional units are realized through a socket and a plug for connecting the functional units through side buses with explosion-proof design; the back of the shell is provided with two round holes, one of which is provided with an elbow and the other of which is blocked by a round flange cover plate; the explosion-proof shell of unit, the explosion-proof shell of bus tie unit, I section inlet wire unit explosion-proof shell, I section feeder unit explosion-proof shell, II sections inlet wire unit explosion-proof shell, II sections feeder unit explosion-proof shell, II sections PT keep apart the explosion-proof shell structure of unit the same.

Specifically, a brand new complete set design idea is provided by investigating the defects of high-voltage power supply and distribution equipment of a substation under a coal mine by taking the design form of ground power transformation as a reference, and a set of safe, reliable and less-maintenance mining explosion-proof intelligent high-voltage complete set power distribution device is formed by combining advanced intelligent elements.

One, system set design

1. Fig. 1 shows a mining explosion-proof intelligent high-voltage complete power distribution device. The utility model discloses according to the dual power supply system that colliery was adopted in the pit generally, carry out the design of a whole set of system. The isolation and connection four-function unit comprises an incoming line, a feeder line and a PT isolation and connection four-function unit, wherein the feeder line unit can be increased and decreased according to the number of using requirements.

2. As shown in fig. 1, PT isolation units are designed, and a voltage transformer is used to collect voltage of a whole line section in a centralized manner, and output 100V voltage signals to each unit for measurement, metering and voltage protection. Meanwhile, a unified zero sequence voltage signal can be provided, and the accuracy of the comprehensive protection device for judging the cable ground fault is effectively improved. And a power transformer is arranged in the PT isolation unit and used for providing a system working power supply.

PT isolation units are installed on two sides of the bus coupler unit, and isolation and lifting functions of buses are achieved through two-station isolation switches and an upturning design of insulated buses inside the unit.

3. And designing a bus connection unit as a power distribution unit for connecting or disconnecting two sections of bus power supplies. A set of insulated buses is arranged in the internal design and is turned upwards for connecting buses at two ends.

4. As shown in figure 1, a grounding device is additionally arranged on a feeder unit, and the safety and reliability of the inspection and maintenance operation are realized by adopting a three-station isolation grounding switch mode.

5. As shown in figure 1, the complete set of device realizes the electric operation of the device by adding an isolation motor and an energy storage motor, and has the function of manual operation.

6. As shown in fig. 1, the incoming line unit is designed in a downward incoming line mode, so that the function of connecting a superior power supply to a first-section bus is realized.

Second, the design of working power supply

1. The secondary working power supply of the system is uniformly provided by a power transformer. As shown in fig. 2, the load side of the power transformer is divided into two paths, one of which is connected to the uninterruptible power supply box, and the other is connected to the small bus to provide power for the undervoltage trip coil of each unit circuit breaker.

2. As shown in fig. 2, a relay KA1 and a contactor KM1 are provided at the secondary side of the voltage transformer and the power transformer, respectively, to realize a function of preventing reverse power transmission.

3. As shown in fig. 3, a travel switch SQ1 and a contactor KM are provided in each unit to constitute a door lock circuit, thereby realizing the function of opening the door and interrupting the power supply.

4. As shown in fig. 3, the ups box is responsible for supplying operating and control power to the integrated protectors, breakers, disconnectors, and display, smart components, etc. of each unit. By applying the uninterrupted power supply box, the full-electric operation of the whole section of line can be realized, and meanwhile, the reliability of protection action during line fault is effectively improved.

5. As shown in fig. 3, the voltage transformer is only used for providing voltage signals for measurement and protection of each unit and zero sequence voltage signals, so that the fault rate of the voltage transformer is greatly reduced, and the accuracy of metering and the reliability of the device are improved.

Design of explosion-proof shell

Each functional unit is provided with an independent explosion-proof shell, and the combination and the connection among the functional units are realized by adopting a sewing mode, so that the mine explosion-proof high-voltage complete power distribution device is formed.

1. Fig. 4 is an explosion-proof casing for complete set distribution device, as shown in the figure, inside is equipped with explosion-proof independent secondary wiring chamber, adopts mining explosion-proof type binding post to connect between secondary wiring chamber and the main cavity room. The main body cavity is divided into an instrument cavity and a breaker cavity by a protection plate. The upper bus cavity, the lower cable chamber and the breaker cavity are a large explosion-proof cavity.

2. The front of the chamber is provided with a small cable leading-in device for connecting a small bus and a communication line.

3. As shown in fig. 4, explosion-proof joint surfaces are arranged on the surfaces of the shells on the two sides of the cavity of the circuit breaker, and the explosion-proof shells are sewn in a mode of fastening bolts inside the shells. And the combination and compact connection among the functional units are realized through the socket and the plug for connecting the side bus with the platform in an explosion-proof design, as shown in fig. 8.

4. As shown in fig. 5, the cavity door of the explosion-proof housing is a side-hinged door hinge structure, and the bolt is fixed in a fixed mode.

5. As shown in figure 6, the back of the explosion-proof shell used as the incoming line and feeder line unit is provided with two round holes, one of which is provided with an elbow and a secondary wiring cavity, and the upper cover is designed to facilitate installation and wiring. And the other hole is sealed by a circular flange cover plate for standby. The purpose is that can be according to the trend of cable in the pit, the selection is used, finally decides whether cable connector is left or is qualified for the next round of competitions to the right.

6. PT isolation unit and female unit realize the function that the generating line is inside to turn up the promotion through the mode of widening the casing. As shown in fig. 7.

Four, fixed mounting all insulation all shielding switchgear

The function of cutting off or closing working current or fault current in a high-voltage circuit is realized by selecting fully-insulated and fully-shielded integrated switch equipment. The configuration of the switchgear differs for each unit according to the functional and usage requirements. The incoming line and bus connection unit adopts a two-station isolating switch and is integrated with a vacuum arc extinguish chamber to form an integrated switch device; the feeder line unit adopts an isolation grounding three-position switch and vacuum arc extinguish chamber integrated switch device; the PT isolating unit integrated switch equipment is a two-station isolating switch.

The integrated switch is provided with an energy storage motor and an isolation closing motor as shown in the figure, and can realize full-electric operation. Meanwhile, a closing operation handle and an isolation closing handle are arranged on the front panel, and the requirement of on-site manual opening and closing is met.

The integrated switch equipment adopts a frame structure, is fixedly installed on the shell, and can effectively avoid the problem of poor contact of moving and static contacts caused by mechanism deformation by adopting the installation mode.

Five, intelligent functional design

Each functional unit of the complete set of power distribution device has an electric switching-on and switching-off function, and is provided with intelligent functional configurations such as a temperature real-time monitoring function, a video monitoring function and a self-diagnosis function of a switch component.

1. Preferably, a wireless temperature measuring sensor is arranged at the position of a wire inlet and outlet sleeve of the switch component, receives a temperature signal through a terminal and uploads the temperature signal to an upper computer in real time.

2. Preferably, a high-definition camera is installed at the isolated fracture, and the switching state is visually monitored.

3. The intelligent switch equipment is optimized, a sensor for monitoring the mechanical characteristics is configured, the equipment operation data and the switch characteristic data are transmitted back to a ground background diagnosis system in real time, and the full life cycle health management of the switch component is realized.

4. The data acquisition and control unit is designed and developed to realize the automatic one-key sequence control function and the function of data centralized acquisition and transmission.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides a mining flame-proof type intelligence high voltage complete set distribution device which characterized in that: the device comprises a bus connection unit (1), a section I incoming line unit (2), a section I feeder line unit (3), a section I PT isolation unit (4), a section II incoming line unit (5), a section II feeder line unit (6) and a section II PT isolation unit (7), wherein one end of the bus connection unit (1) is connected with the section I PT isolation unit (4), the other end of the bus connection unit is connected with the section II PT isolation unit (7), the other end of the section I PT isolation unit (4) is connected with the section I incoming line unit (2) through a first bus, the other end of the section II PT isolation unit (7) is connected with the section II incoming line unit (5) through a second bus, the section I feeder line unit (3) is further connected onto the first bus, the section II feeder line unit (6) is further connected onto the second bus, the section I feeder line unit (3) is provided with n, and n is an integer equal to or larger than 1, the number of the II sections of feeder line units (6) is x, and x is an integer equal to or larger than 1.

2. The mining flameproof intelligent high-voltage complete power distribution device according to claim 1, characterized in that: the bus connection unit (1) is used as a power distribution unit for connecting or disconnecting two bus power supplies, and a set of insulated buses is arranged in the bus connection unit in an upturning mode and used for connecting buses at two ends.

3. The mining flameproof intelligent high-voltage complete power distribution device according to claim 2, characterized in that: section I PT keeps apart unit (4) and section II PT keeps apart unit (7) and installs in the both sides of bus contact unit (1), through two station isolator to and turn over the design on the unit internal insulation bus, realize the isolation lifting function of bus.

4. The mining flameproof intelligent high-voltage complete power distribution device according to claim 3, characterized in that: the incoming line and bus connection unit adopts a two-station isolating switch and is integrated with a vacuum arc extinguish chamber to form an integrated switch device; the feeder line unit adopts an isolation grounding three-position switch and vacuum arc extinguish chamber integrated switch device; the PT isolating unit integrated switch equipment is a two-station isolating switch.

5. The mining flameproof intelligent high-voltage complete power distribution device according to claim 1, characterized in that: section I PT keeps apart unit (4) including section I PT keeps apart unit explosion-proof housing and installs section I PT isolation unit circuit in section I PT isolation unit explosion-proof circuit, section I PT isolation unit circuit includes voltage transformer YHa, voltage transformer YHb, voltage transformer YHc, power transformer, contactor KM1, relay KA1, UPS power, circuit breaker QF, voltage transformer YHa, voltage transformer YHb, voltage transformer YHc's secondary side sets up relay KA1, power transformer's secondary side sets up contactor KM1, voltage transformer YHa, voltage transformer YHb, between voltage transformer YHc and the relay KA1 and power transformer and contactor KM1 are provided with circuit breaker QF, and circuit breaker QF's first end is connected with voltage transformer YHa, voltage transformer YHb, voltage transformer YHc, power transformer's first end respectively, and voltage transformer YHa, The other ends of the voltage transformer YHb, the voltage transformer YHc and the power transformer are grounded, one end of the UPS is connected with the first normally-open contact of the contactor KM1 and the second normally-open contact of the contactor KM1, the load side of the power transformer is divided into two paths, one portion of the two paths is connected with the UPS box, and the other portion of the two paths is connected with the small bus to provide power for the undervoltage tripping coil of each unit circuit breaker.

6. The mining flameproof intelligent high-voltage complete power distribution device according to claim 1, characterized in that: the bus connection unit (1) comprises a bus connection unit explosion-proof shell and a bus connection unit circuit arranged in the bus connection unit explosion-proof shell; the I-section wire inlet unit (2) comprises an I-section wire inlet unit explosion-proof shell and an I-section wire inlet unit circuit arranged in the I-section wire inlet unit explosion-proof shell; the I-section feeder unit (3) comprises an I-section feeder unit explosion-proof shell and an I-section feeder unit circuit arranged in the I-section feeder unit explosion-proof shell; the second section of wire inlet unit (5) comprises a second section of wire inlet unit explosion-proof shell and a second section of wire inlet unit circuit arranged in the second section of wire inlet unit explosion-proof shell; the second section of feeder unit (6) comprises a second section of feeder unit explosion-proof shell and a second section of feeder unit circuit arranged in the second section of feeder unit explosion-proof shell; i section PT keeps apart unit (4) and II sections PT and keeps apart unit (7) the structure the same, II sections PT keep apart unit (7) including II sections PT keep apart unit explosion-proof casing and install II sections PT in II sections PT keep apart unit explosion-proof casing and keep apart the unit circuit.

7. The mining flameproof intelligent high-voltage complete power distribution device according to claim 1, characterized in that: the explosion-proof casing of II sections inlet wire units includes the casing and articulates the chamber door on the casing, and upper portion is equipped with explosion-proof independent secondary wiring chamber (21) in the casing, adopts mining explosion-proof binding post to be connected between secondary wiring chamber and main cavity, and the main part cavity adopts the guard plate to cut apart out appearance chamber (22) and circuit breaker chamber (23) two parts, goes up bus-bar chamber (24), cable chamber (25) and circuit breaker chamber (23) explosion-proof cavity of sharing down.

8. The mining flameproof intelligent high-voltage complete power distribution device according to claim 7, characterized in that: explosion-proof joint surfaces (28) are arranged on the surfaces of shells on two sides of a cavity of the circuit breaker, sewing between the explosion-proof shells is realized in a mode of fastening bolts inside the shells, and a socket and a plug for connecting the functional units are connected through side buses in an explosion-proof design, so that the combination between the functional units is compact.

9. The mining flameproof intelligent high-voltage complete power distribution device according to claim 8, characterized in that: two round holes are formed in the back face of the shell, one of the round holes is provided with an elbow, and the other round hole is plugged by a round flange cover plate.

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