CN210431268U

CN210431268U - Mining integral high-pressure solid soft starting device

Info

Publication number: CN210431268U
Application number: CN201921205819.6U
Authority: CN
Inventors: 陈凯; 谭涛; 张栋
Original assignee: Xiangyang Success Electric Co ltd
Current assignee: Xiangyang Success Electric Co ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-04-28
Anticipated expiration: 2029-07-29

Abstract

The utility model discloses a mining integrated high-pressure solid-state soft starting device, which comprises a supporting and protecting structure, an upper device module, a silicon controlled module and a lower electrical component; the upper device module comprises a device chamber (10), a high-voltage fuse (2) and a voltage transformer (3) which are arranged on one side of the device chamber (10), the silicon controlled module comprises a silicon controlled valve group (12), an upper beam insulator (4) and an incoming call sensor (6), the lower electrical component comprises a high-voltage vacuum contactor (7), a current transformer (8), an incoming line cable (9) and an outgoing line cable (15), and the incoming line cable (9) penetrates through a rear connecting copper bar (26) of the current transformer (8). The utility model discloses a starting drive provides a soft starting drive who has voltage, the electric current controllability is splendid in the mine passageway for no gas dust explosion danger, can effectively eliminate the motor and start the impact to the electric wire netting, realizes realizing the accurate control to the motor.

Description

Mining integral high-pressure solid soft starting device

Technical Field

The utility model belongs to the technical field of the machine control equipment, more specifically relates to a solid-state soft starting drive of mining integral type high pressure.

Background

In recent years, with the vigorous advocation of energy conservation and emission reduction in China, a large number of medium and small-sized mine enterprises are replaced by high-voltage motors instead of obsolete low-voltage motors. Particularly for water pumps and ventilation equipment in some mines, the motor is generally large, high-pressure soft start equipment is required, and in recent years, the high-pressure solid soft start device with mature technology and high cost performance becomes a poor choice.

The high-pressure solid soft start equipment is widely applied to petroleum, chemical industry, building materials, steel, papermaking and military industry. Through the development of many years, the starting device has become the mainstream configuration of starting equipment of high-voltage motors below 6000KW by virtue of the advantages that the starting device is wide in application field, good in starting performance, particularly suitable for various severe working environments and the like.

The traditional high-voltage solid-state soft start device has the following defects: (1) in the starting process of dragging the high-voltage alternating-current asynchronous motor, only voltage slope control, current slope control and sudden jump starting can be realized, and the motor cannot be accurately controlled; (2) the inability to achieve low speed adjustment movement (e.g., 8% or 15% of rated speed) has no way to meet customer requirements for some devices that require low speed adjustment (e.g., belt conveyors); (3) the forward and reverse switching can not be realized under the condition of no phase modulation or wiring change.

SUMMERY OF THE UTILITY MODEL

To the above defect of prior art or improve the demand, the utility model provides a solid-state soft starting device of mining integral type high pressure provides one kind in the mine passageway that does not have gas dust explosion danger and has voltage, the splendid soft starting device of electric current controllability, can effectively eliminate the motor start to the impact of electric wire netting, realizes realizing the accurate control to the motor.

In order to achieve the purpose, the utility model provides a mining integrated high-voltage solid-state soft starting device, which comprises a supporting and protecting structure, an upper device module, a silicon controlled module and a lower electrical component, wherein the upper device module, the silicon controlled module and the lower electrical component are arranged in the supporting and protecting structure; wherein,

the upper-layer device module comprises a device chamber (10), a high-voltage fuse (2) and a voltage transformer (3), wherein the high-voltage fuse (2) and the voltage transformer (3) are arranged on one side of the device chamber (10), and a wire outlet end of the high-voltage fuse (2) is connected with a wire inlet end of the voltage transformer (3);

the silicon controlled module comprises a silicon controlled valve bank (12), an upper beam insulator (4) and an incoming call sensor (6), wherein a copper bar (26) is arranged between the upper beam insulator (4) and the incoming call sensor (6) and is connected to the incoming line end of the silicon controlled valve bank (12);

lower floor's electrical component includes high-pressure vacuum contactor (7), current transformer (8), inlet wire cable (9) and cable (15) of being qualified for the next round of competitions, inlet wire cable (9) are passed connect copper bar (26) behind current transformer (8), this copper bar (26) bottom with behind incoming telegram sensor (6) fixed connection, draw down the access again high-pressure vacuum contactor (7), the top is passed behind upper beam insulator (4) with high-pressure fuse (2) inlet wire end is connected, silicon controlled valve group (12) outlet wire end is received with copper bar (26) on cable (15) of being qualified for the next round of competitions, should be qualified for the next round of competitions cable (15) with high-pressure vacuum contactor (7) are connected.

Further, the supporting and protecting structure comprises a supporting and installing unit, wherein the supporting and installing unit comprises a shell spliced and combined by aluminum-clad zinc plates with corrosion resistance and moisture resistance, a lower side beam (21), an upper side beam (23) and an installing bracket (25);

the shell is sleeved on the mounting support (25) and integrally divided into an upper layer, a middle layer and a lower layer, wherein the upper layer is provided with an upper-layer device module, the middle part is provided with a silicon controlled module, and the lower layer is provided with an electrical component;

the upper side beam (23) is arranged at the bottom of the upper-layer device module, and the lower side beam (21) is arranged at the bottom of the silicon controlled module.

Furthermore, the left side and the right side of the shell are respectively spliced into a whole by two aluminum-zinc-coated plates and riveted with the surrounding mounting brackets (25), and the surrounding mounting brackets (25) are folded by the aluminum-zinc-coated plates to form a C-shaped structure.

Further, the supporting and protecting structure comprises an internal environment protecting unit, wherein the internal environment protecting unit comprises a drip-proof protecting plate (1) and an insulating baffle (13);

the anti-dripping guard plate (1) is of a plate-shaped structure and is arranged at the top of the mounting bracket (25);

the insulating baffle (13) is of a plate-shaped structure and is fixed on one side face of the mounting bracket (25) through bolts.

Further, the internal environment protection unit comprises a filter screen (17) and an exhaust fan (18);

the filter screen (17) is arranged at one corner of the bottom of the shell;

the exhaust fan (18) is arranged on one side of the top of the shell.

Further, the internal environment protection unit comprises a plate heater (24), and the plate heater (24) is arranged on one side surface of the bottom of the shell.

Furthermore, the silicon controlled module comprises a lower beam insulator (14), the top of the lower beam insulator (14) is fixedly connected with the lower side beam (21), and the other end of the lower beam insulator is connected with the copper bar (26).

Furthermore, the silicon controlled module comprises an upper rectangular insulating beam (19) and a lower rectangular insulating beam (20);

the top of the thyristor valve group (12) is fixedly connected with the upper end rectangular insulating cross beam (19) through a mounting bolt (22), and the bottom of the thyristor valve group is fixedly connected with the lower side beam (21) through a lower end rectangular insulating cross beam (20).

Further, the lower-layer electrical assembly comprises a zero sequence transformer (16), the zero sequence transformer (16) is fixed on the mounting bracket (25), and the outgoing cable (15) penetrates through an inner hole of the outgoing cable.

Further, the upper device module comprises a control panel (11), and the control panel (11) is arranged at the front upper part of the shell.

Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:

1. the utility model discloses a starting drive provides a soft starting drive who has voltage, the electric current controllability is splendid in the mine passageway for no gas dust explosion danger, can effectively eliminate the motor and start the impact to the electric wire netting, realizes realizing the accurate control to the motor.

2. The utility model discloses a starting drive adopts the riveted mode to provide a good sealed environment for this solid-state soft starting drive of high pressure, and chooses for use the coated aluminum zinc board can guarantee that this solid-state soft starting drive of high pressure can not take place to corrode, the effectual production of avoiding the potential safety hazard in the during operation in moist environment.

3. The utility model discloses a starting drive controls the temperature and the humidity of high-pressure solid-state soft starting drive's internal environment through this heater, ensures that its inside electric elements provides suitable operational environment, and the inside of this rectangle scope is provided with the filter screen to high-pressure solid-state soft starting drive takes a breath.

4. The utility model discloses a starting drive utilizes vacuum interrupter arc extinguishing principle to carry out the break-make of this high-pressure vacuum contactor place circuit of remote control, is favorable to carrying out effectual control to this solid-state soft starting drive of high pressure, improves this solid-state soft starting drive's of high pressure controllability.

5. The utility model discloses a starting drive, straight-through current transformer pass through bolt fastening mode level and arrange to fix on the vertical face of L shape base for measure the current state that this solid-state soft starting drive of high pressure derives three-phase electricity, and convert this derivation current state into the signal of telecommunication and feed back to control system, so that the staff can carry out timely control to this solid-state soft starting drive's of high pressure operating condition, improve this solid-state soft starting drive's of high pressure accuracy.

6. The utility model discloses a starting drive, voltage transformer pass through the bolt fastening at the secondary device room back for measure this solid-state soft starting drive real-time voltage of high pressure, through voltage transformer and current transformer's mating reaction, the current that gets into silicon controlled rectifier module that calculates that can be accurate improves this solid-state soft starting drive's of high pressure reliability and accuracy.

Drawings

Fig. 1 is a front view of an integrated high-pressure solid-state soft start device for a mine according to an embodiment of the present invention;

fig. 2 is the utility model discloses a mining integral type high pressure solid-state soft starting drive inner structure left side view.

In all the figures, the same reference numerals denote the same features, in particular: 1-drip-proof guard board, 2-high-voltage fuse, 3-voltage transformer, 4-upper beam insulator, 5-lightning arrester, 6-incoming call sensor, 7-high-voltage vacuum contactor, 8-current transformer, 9-incoming line cable, 10-device chamber, 11-control panel, 12-thyristor module, 13-insulating baffle, 14-lower beam insulator, 15-outgoing line cable, 16-zero sequence transformer, 17-filter screen, 18-exhaust fan, 19-upper end rectangular insulating beam, 20-lower end rectangular insulating beam, 21-lower side beam, 22-mounting bolt, 23-upper side beam, 24-plate heater, 25-mounting bracket and 26-copper bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, the high voltage solid state soft start device includes a support guard structure, an underlying electrical component, a thyristor module, and a device chamber. The supporting and protecting structure provides mounting support and protection for the internal device of the high-voltage solid soft starting device, and the lower-layer electrical component, the controllable silicon component and the upper-layer device chamber are respectively arranged on the lower layer, the middle layer and the lower layer of the supporting and protecting structure. The function of high-voltage solid soft start is completed by the mutual matching of the arranged electric elements. The high-pressure solid soft start device provides a soft start device with excellent voltage and current controllability for a mine channel without gas dust explosion danger, and can effectively reduce the cost investment of mine enterprises during construction.

As shown in fig. 1, the supporting and shielding structure includes a supporting and mounting unit and an internal environmental protection unit. The supporting and mounting unit comprises a shell spliced and combined by aluminum-clad zinc plates with corrosion resistance and moisture resistance, a lower side beam 21, an upper side beam 23 and a mounting bracket 25. Wherein, every limit of the shell left and right sides is spliced into a whole by two coated aluminum zinc plates respectively, with for the stand rivet riveting all around, the stand is folded into the C style of calligraphy again after with coated aluminum zinc plate fifty percent discount all around, and open at the casing top has the pressure release passageway, and the frame is whole to be divided into three-layer about in the top: wherein the upper layer is a device chamber, the middle part is provided with a silicon controlled module, and the lower layer is provided with an electrical component. Preceding cabinet door is equipped with soft start control ware and measuring instrument, and the skin is equipped with one deck organic glass protection casing, and preceding lower cabinet door is equipped with the electromagnetic lock, prevents electrified mistake and opens the cabinet door, and cabinet door lower part is opened has the tensile hole of ventilating, and the position that the inboard of cabinet door was opened to have tensile ventilation hole is equipped with dustproof filter screen, and the shrouding is equipped with the exhaust fan on the back, and the user is in cabinet body fan heat, and the upper portion of the cabinet body is equipped with the drip proof. The whole cuboid box structure that is of installing support 25, the left end face, right-hand member face and the rear end face of this box structure are by covering the double-deck aluminium zinc plate that folds into the C style of calligraphy again after the aluminium zinc plate fifty percent discount, and up end and lower terminal surface are all installed on the box structure by covering the riveted mode of aluminium zinc plate, and preceding terminal surface is by covering the door that the aluminium zinc plate was made, installs in the front end frame department of box structure, and it has the rectangle cavity to open on this preceding terminal surface upper portion to control panel 11's installation. Simultaneously, be provided with the electromagnetic lock in preceding terminal surface lower part, prevent electrified mistake and open the cabinet door. Two aluminum-clad zinc plates are respectively arranged on the outer sides of the front end surface and the rear end surface and are fixed on the peripheral upright posts in a riveting mode, wherein a cavity with the same size as the upper part of the door is formed in the aluminum-clad zinc plate on the upper part of the front end surface, so that the control panel 11 can be conveniently installed. Adopt riveted mode to provide a good sealed environment for this solid-state soft starting device of high pressure, and choose for use and cover the aluminium zinc sheet and can guarantee that this solid-state soft starting device of high pressure can not take place to corrode in the during operation of humid environment, the effectual production of avoiding the potential safety hazard. The lower side beams 21 are two horizontal beams arranged in the horizontal direction from the rear end face to the front end face of the mounting bracket 25, are made of aluminum-clad zinc plates and are fixed at the lower positions of the inner sides of the left and right end faces of the mounting bracket 25 in a bolt fixing mode, so that effective and stable support is provided for lower-layer electric components and controllable silicon components, and the reliability of the high-voltage solid soft start device is improved. The upper side beams 23 are two horizontal beams arranged in the horizontal direction from the rear end face to the front part of the mounting bracket 25, and the upper side beams 23 are also made of aluminum-clad zinc plates and fixed at the lower parts of the inner sides of the left and right end faces of the mounting bracket 25 in a bolt fixing mode, so that effective and stable support is provided for a controllable silicon assembly and an upper device chamber, and the reliability of the high-pressure solid soft start device is further improved.

In addition, the inner environment protection unit comprises the anti-dripping protection plate 1, an insulating baffle 13, a filter screen 17, an exhaust fan 18 and a plate heater 24. Wherein, drip proof backplate 1 sets up the up end upside at installing support 25, this drip proof backplate 1 is whole to be platelike structure, approximate horizontal direction sets up on installing support 25 up end, fold down at this platelike structure's front end position, later with this drip proof backplate 1's folding lower extreme limit welded fastening on installing support 25's preceding upside edge through the welded mode, position is provided with the loop configuration who is used for supporting the support about simultaneously between drip proof backplate 1 and installing support 25 up end, when playing the support to drip proof backplate 1, make this drip proof backplate 1's front end be a little higher than the rear end height, the rivers of being convenient for prolong drip proof backplate 1 and flow, later flow down from installing support 25's rear end face, improve this high-pressure solid-state soft starting drive's security and reliability. The exhaust fan 18 is arranged at the upper side position of the rear end face of the mounting bracket 25 and is used for providing effective ventilation for the high-voltage solid soft start device and providing a good working environment for internal electric elements. The insulating baffle 13 is integrally of a plate-shaped structure, and is fixed on the left and right end faces of the mounting bracket 25 by bolts and is positioned near the middle position of the front end face of the mounting bracket 25. Be used for keeping apart staff and the inside high-pressure electric elements of taking when the staff opens the cabinet door, for staff's safety provides the guarantee, improve this high-pressure solid-state soft starting device's security and reliability. The plate heater 24 is arranged at the bottom of the right end face of the mounting bracket 25 in a bolt fixing mode, and the temperature and the humidity of the internal environment of the high-pressure solid soft start device are controlled through the plate heater 24, so that the internal electric elements are guaranteed to provide a proper working environment. The filter screen 17 is arranged at the lower part of the front end face of the mounting bracket 25, rectangular holes are uniformly formed in the rectangular range of the filter screen 17, and the filter screen 17 is arranged in the rectangular range so as to facilitate ventilation of the high-pressure solid soft start device.

As shown in fig. 1, the lower electrical component includes a high voltage vacuum contactor 7, a current transformer 8, an incoming cable 9, an outgoing cable 15 and a zero sequence transformer 16. Wherein, a power incoming cable 9 passes through a current transformer 8 and then is connected with a copper bar, the lower end of the copper bar is fixed on an incoming call sensor 6, then is led down to be connected with the lower end of a high-voltage vacuum contactor 7, the upper end of the copper bar is fixed on an insulator 4, then a net is connected with a high-voltage fuse 2, the other end of the high-voltage fuse 2 is connected with the incoming call end of a voltage transformer 3, a copper bar is arranged between the insulator 4 and the incoming call sensor 6 and is connected with the upper end of a silicon controlled rectifier valve bank 12, the upper end of the silicon controlled rectifier module is fixed on a rectangular insulating crossbeam 19, the lower end of the silicon controlled rectifier module is fixed on a rectangular insulating crossbeam 20, the rectangular insulating crossbeam 19 and the rectangular insulating crossbeam 20 are respectively fixed on an upper side beam 23 and a lower side beam 21, the outgoing line end of the, the other end of the outgoing copper bar is connected to the insulator 14, and the outgoing cable 15 passes through the zero sequence transformer 16 and then is connected to the outgoing copper bar.

As shown in fig. 1, the controllable silicon assembly includes an electrical component on a beam and a thyristor module. Wherein the on-beam electrical components include an upper beam insulator 4, a lightning arrester 5, an incoming call sensor 6, and a lower beam insulator 14. The 4 cylindric structures of upper beam insulator through the rear side position of the left end face roof beam of bolt with this upper beam insulator 4 fixed at upper beam 23 for copper bar 26 provides the support, simultaneously, avoid the three-phase electricity on the copper bar 26 to prolong upper beam 23 and take place to leak, improve this high pressure solid-state soft starting device's security. The incoming call sensor 6 is integrally of a cylindrical structure, and the incoming call sensor 6 is horizontally mounted inside the front end face beam of the lower side beam 21 in a bolt fixing manner, close to the rear side position. On the one hand, be used for providing insulation and support for copper bar 26, on the other hand, whether have electricity to the inlet wire side to monitor, through voltage transformer 3 and current transformer 8's mating reaction, the calculation that can be accurate gets into the electric current of silicon controlled rectifier module, improves this solid-state soft start device of high pressure's reliability and accuracy. The lightning arrester 5 has an overall structure of a cylindrical structure, and the cylindrical structure is horizontally and fixedly mounted inside the left end beam of the lower side beam 21 in a bolt fixing manner and is positioned on the front side of the incoming call sensor 6. The head end of the lightning arrester 5 is connected with the wire outlet end of the high-voltage vacuum contactor 7 through a copper bar 26, the tail end of the lightning arrester is connected with the left end face beam of the lower side beam 21, and under the condition of normal voltage, the lightning arrester 5 is not conducted and only milliampere current is allowed to pass; when the external three-phase cable is struck by lightning to cause the voltage to be increased rapidly, the lightning arrester 5 is conducted rapidly, so that fault current can be conveniently led into the grounding aluminum bar on the front end face of the lower side beam 21 through the device and then led into the ground through the grounding aluminum bar, internal electric elements of the high-voltage solid soft starting device can be effectively guaranteed, and the safety and the reliability of the high-voltage solid soft starting device are further improved. The whole column structure that is of underbeam insulator 14, this underbeam insulator 14 set up on the left end face roof beam of underbeam 21, through bolt fastening's mode with the up end fixed mounting of this roof beam insulator 14 on the lower terminal surface of the left end face roof beam front end position of underbeam 21 for provide insulating support for copper bar 26.

In addition, the thyristor module comprises a thyristor valve group 12, an upper rectangular insulating beam 19, a lower rectangular insulating beam 20 and a mounting bolt 22. The upper rectangular insulating beams 19 are two beams with rectangular cross sections and are horizontally arranged from left to right. Two cross members of the upper rectangular insulating cross member 19 are arranged at the front end positions of the upper side members 23, and at the same time, four bolt holes are provided at the middle portions of the two cross members of the upper rectangular insulating cross member 19, and two bolt holes are provided on each cross member for providing mounting positions for the mounting bolts 22. The whole cylindrical bolt-shaped structure that is of mounting bolt 22, this mounting bolt 22 pass and set up the bolt hole of rectangular insulating crossbeam 19 of upper end and stretch out downwards, for silicon controlled rectifier valves 12 provide the upper end and support, guarantee silicon controlled rectifier valves 12's stable installation, improve this solid-state soft starting device's of high pressure security and reliability. The lower rectangular insulating cross member 20 is two cross members having a rectangular cross section and arranged horizontally from left to right, and the two cross members of the lower rectangular insulating cross member 20 are arranged at the middle position of the lower side member 21 between the surge arrester 5 and the lower beam insulator 14. And the middle position of two beams of the lower rectangular insulating beam 20 is provided with bolt holes at the same positions as the bolt holes arranged on two beams of the upper rectangular insulating beam 19, and the bolt holes are used for installing and supporting the thyristor valve group 12. The thyristor valve group 12 is integrally of a vertically arranged cuboid structure, and the thyristor valve group 12 is fixed between the mounting bolt 22 and the lower end rectangular insulating beam 20 in a bolt fixing mode. The inlet wire end of the thyristor valve group 12 is arranged at the middle position of the upper side of the rear end face of the cuboid structure, and the outlet wire end is led out from the lower end face of the cuboid structure. This thyristor valve group 12 is through the control to the gate level electric current of its inside thyristor, and then controls switching on of this thyristor, simultaneously, by switching on in proper order of control system control thyristor, progressively promotes the electric current and the voltage of three-phase electricity to accomplish the effect of soft start, provide comparatively ideal starting current and voltage for the start-up of motor, effectively reduce the input of mine enterprise expense during the construction, improve this high pressure solid-state soft starting device's economic nature and reliability.

As shown in fig. 1 and 2, the upper device chamber includes a high-voltage fuse 2, a voltage transformer 3, a device chamber 10, a control panel 11, and a copper bar 26. The control panel 11 is a rectangular plate-like structure and is disposed in a hollow space disposed at an upper portion of a front end surface of the mounting bracket 25. Preferably, a layer of organic glass protective cover is arranged on the outer side of the rectangular plate-shaped structure, so that the risk of accidental electric shock is reduced, and the safety of the high-voltage solid soft starting device is improved. The control panel 11 is used for controlling the soft start in real time to ensure the safe operation of the high-voltage solid soft start device. The device chamber 10 is integrally of a rectangular parallelepiped box-shaped structure, the front end face of the rectangular parallelepiped box-shaped structure can be opened by rotating along the left front end edge, the device chamber 10 is horizontally arranged at the rear part of the control panel 11 along the left-right direction, and the left end face and the right end face of the device chamber are overlapped with the left end face and the right end face of the mounting bracket 25. The device chamber 10 is used for mounting secondary control elements. The voltage transformer 3 is integrally of a horn type structure horizontally arranged, and the cylindrical structure sequentially comprises a mounting platform flange, a voltage mutual inductance device and a horn device from front to back. The front end position of the voltage transformer 3 is provided with a mounting flange, and the voltage transformer is mounted in the middle of the rear end surface of the device chamber 10 in a bolt fixing mode. The voltage transformer is arranged at the rear end of the mounting flange and is used for converting high voltage into low voltage, and the claw device is of a cylindrical rod-shaped structure and is convenient for leading a power supply into the voltage transformer 3. The voltage transformer 3 is used for detecting the voltages applied to the thyristor valve group 12 and the high-voltage vacuum contactor 7, and then transmitting the detection data to a control system for processing, so that the accuracy of the high-voltage solid soft start device is improved. The high-voltage fuse 2 is of a rectangular plate-shaped structure and is installed on the access devices of the copper bar 26 and the voltage transformer 3 in a bolt fixing mode through the installation base and the fusible core. The fusible core sets up in installation base upper end, and preferably, this fusible core chooses for use the resistance great, and the material that the cross-sectional area is less and easily fusing is made, when this voltage transformer breaks down the condition, can fuse protection voltage transformer fast and can not damage. The copper bar 26 is of a plate-shaped structure, the copper bar 26 is divided into three sections from the tail end of the incoming cable 9, and the upper section of the copper bar 26 penetrates through the upper beam insulator 4 to be connected to the access end of the high-voltage fuse 2; the middle copper bar 26 is connected with the wire inlet end of the rear end face of the silicon controlled valve bank 12; the lower section copper bar 26 is divided into a lower section front side copper bar 26 and a lower section rear side copper bar 26, wherein the lower section rear side copper bar 26 passes through the incoming call sensor 6 and is connected to the wire inlet end of the high-voltage vacuum contactor 7; the starting point of the lower-section rear copper bar 26 is the wire outlet end of the high-voltage vacuum contactor 7, the wire outlet end is divided into two directions at the position, one direction is upwards connected with the front side of the lightning arrester 5, and the other direction is horizontally forwards connected with the lower end wire outlet end of the silicon controlled valve bank 12, the lower end of the lower beam insulator 14 and the upper end of the wire outlet cable 15 in sequence. This copper bar 26 provides the conduction path for the electric current, guarantees that a mining integral type high pressure solid-state soft starting device can normally accomplish soft start work.

The embodiment of the utility model provides a solid-state soft starting drive of mining integral type high pressure, theory of operation and having implementation step as follows:

step 1: before carrying out the solid-state soft start of high pressure, should be under the circumstances of outage, the electromagnetic lock of the preceding lower extreme that sets up on installing support 25 unties the back, carries out preliminary detection to this solid-state soft start device of high pressure, gets rid of the potential safety hazard, guarantees equipment and staff's safety.

Step 2: after the detection is finished, a good working environment is provided for the high-pressure solid-state soft start device by controlling the exhaust fan 18 and the plate heater 24. The three-phase high-voltage electricity is connected into the high-voltage solid soft starting device through the high-voltage incoming cable 9, a working command is sent out through the control panel 11 during working, the silicon controlled valve group 12 is conducted gradually after receiving the working command, the conduction angle of the silicon controlled is adjusted through signals fed back by the voltage transformer 3 and the current transformer 8 during conduction, therefore, stably rising voltage and current are provided for the motor, the high-voltage vacuum contactor 7 is attracted until the motor reaches the rated rotation speed, and the starting process is completed.

It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. A mining integrated high-voltage solid-state soft start device is characterized by comprising a supporting and protecting structure, an upper device module, a silicon controlled module and a lower electrical component, wherein the upper device module, the silicon controlled module and the lower electrical component are arranged in the supporting and protecting structure; wherein,

2. The mining integrated high-pressure solid-state soft start device according to claim 1, wherein the supporting and protecting structure comprises a supporting and installing unit, the supporting and installing unit comprises a shell, a lower side beam (21), an upper side beam (23) and an installing bracket (25) which are spliced and combined by aluminum-clad zinc plates with corrosion resistance and moisture resistance;

3. The mining integrated high-pressure solid-state soft start device according to claim 2, wherein the left side and the right side of the housing are respectively spliced into a whole by two aluminum-zinc coated plates and riveted with the surrounding mounting brackets (25), and the surrounding mounting brackets (25) are folded in half by the aluminum-zinc coated plates to form a C-shaped structure.

4. The mining integrated high-pressure solid soft start device according to any one of claims 2 or 3, characterized in that the supporting and protecting structure comprises an internal environment protection unit, the internal environment protection unit comprises a drip-proof guard plate (1) and an insulating baffle plate (13);

5. The mining integrated high-pressure solid-state soft start device according to claim 4, wherein the internal environment protection unit comprises a filter screen (17) and an exhaust fan (18);

the filter screen (17) is arranged at one corner of the bottom of the shell;

the exhaust fan (18) is arranged on one side of the top of the shell.

6. The mining integrated high-pressure solid-state soft start device according to claim 5, characterized in that the internal environment protection unit comprises a plate heater (24), and the plate heater (24) is arranged on one side surface of the bottom of the shell.

7. The mining integrated high-voltage solid-state soft start device according to claim 2, wherein the silicon controlled module comprises a lower beam insulator (14), the top of the lower beam insulator (14) is fixedly connected with the lower side beam (21), and the other end of the lower beam insulator is connected with a copper bar (26).

8. The mining integrated high-voltage solid-state soft start device according to claim 2 or 7, characterized in that the silicon controlled module comprises an upper end rectangular insulating beam (19) and a lower end rectangular insulating beam (20);

9. The mining integrated high-voltage solid-state soft start device according to claim 1, characterized in that the lower electrical component comprises a zero sequence transformer (16), the zero sequence transformer (16) is fixed on a mounting bracket (25), and the outgoing cable (15) penetrates through an inner hole of the zero sequence transformer.

10. The mining integrated high-pressure solid-state soft start device according to claim 2, characterized in that the upper device module comprises a control panel (11), and the control panel (11) is arranged at the front upper part of the outer shell.