阅读说明：本技术 一种带有安全防护结构的高压变频器及其工作方法 (High-voltage frequency converter with safety protection structure and working method thereof ) 是由 余子先 秦忠根 于 2020-07-30 设计创作，主要内容包括：本发明公开了一种带有安全防护结构的高压变频器及其工作方法,包括防护箱,所述防护箱的底部内壁中心处安装有减震支架,所述减震支架的顶部中心处安装有高压变频器本体,所述防护箱的底部一侧开设有下滑槽,所述下滑槽的内部转动连接有往复丝杆,所述防护箱的底部一侧安装有与往复丝杆驱动连接的减速电机,所述往复丝杆上啮合连接有滑动在下滑槽内部的滑块,所述滑块固定在箱门的底部一侧拐角位置处,所述防护箱的一侧中心处安装有电子锁。本发明结构新颖,构思巧妙,不仅可以防止工作人员意外触电,而且可以防止工作人员在高压变频器本体带电的状态下进行维修工作,大大提升使用的安全性。(The invention discloses a high-voltage frequency converter with a safety protection structure and a working method thereof. The high-voltage inverter is novel in structure and ingenious in conception, can prevent workers from being accidentally electrocuted, can prevent the workers from performing maintenance work in the charged state of the high-voltage inverter body, and greatly improves the use safety.)

1. The utility model provides a high-voltage inverter with safety protection structure, includes guard box (1), its characterized in that: the damping support (7) is installed at the center of the inner wall of the bottom of the protective box (1), the high-voltage frequency converter body (6) is installed at the center of the top of the damping support (7), a lower sliding groove (9) is formed in one side of the bottom of the protective box (1), a reciprocating screw rod (8) is connected to the lower sliding groove (9) in a rotating mode, a speed reduction motor (10) in driving connection with the reciprocating screw rod (8) is installed on one side of the bottom of the protective box (1), a sliding block (16) which slides in the lower sliding groove (9) is connected to the reciprocating screw rod (8) in a meshed mode, the sliding block (16) is fixed to the corner position of the bottom of the box door (4), an electronic lock (12) is installed at the center of one side of the protective box (1), a lock hole (34) which is matched with the electronic lock (12) for use is installed on the box door (4), and a, control panel (3) are installed in the outer wall center department of chamber door (4), the internally mounted of control panel (3) has PLC controller (32), control panel (3) electric connection gear motor (10) and electronic lock (12), the input of voltage sensor (30) electric connection PLC controller (32), the output electric connection gear motor (10) and electronic lock (12) of PLC controller (32).

2. The high-voltage frequency converter with the safety protection structure according to claim 1, wherein: the utility model discloses a high-voltage inverter, including high-voltage inverter body (6), the internally mounted of control panel (3) has frequency conversion power sensor (31), the internally mounted of control panel (3) has wireless communication module (33), the input of frequency conversion power sensor (31) electric connection PLC controller (32), the output of PLC controller (32) passes through wireless communication module (33) and is connected with receiving terminal (5).

3. The high-voltage frequency converter with the safety protection structure as claimed in claim 2, wherein: the wireless communication module (33) follows a TCP/IP protocol, and the wireless communication module (33) adopts 4G and 5G networks.

4. The high-voltage frequency converter with the safety protection structure according to claim 1, wherein: and a roller (17) is installed on one side of the top of the box door (4), and the roller (17) is connected inside an upper sliding groove (2) formed in the top of the protective box (1) in a rolling manner.

5. The high-voltage frequency converter with the safety protection structure according to claim 1, wherein: the shock absorption bracket (7) comprises a lower bottom plate (18), a sleeve seat (19), a first supporting spring (20), a telescopic seat (21), a second supporting spring (22) and an upper bottom plate (23), the lower bottom plate (18) is fixed at the center of the inner wall of the bottom of the protective box (1), a sleeve seat (19) is fixed at the top of the lower bottom plate (18), a telescopic seat (21) is fixedly sleeved on the outer wall of the sleeve seat (19), a first supporting spring (20) is arranged inside the sleeve seat (19) and the telescopic seat (21), the outer walls of the sleeve seat (19) and the telescopic seat (21) are sleeved with a second supporting spring (22), an upper bottom plate (23) is arranged at the top of the telescopic seat (21), a high-voltage frequency converter body (6) is arranged at the center of the top of the upper bottom plate (23), and dust removal assemblies (11) are arranged on the periphery of the top of the upper bottom plate (23).

6. The high-voltage frequency converter with the safety protection structure as claimed in claim 5, wherein: dust removal subassembly (11) include fan (24), ventilation valve (25), main tuber pipe (26), square frame shape pipeline (27), go up air outlet (28) and side air outlet (29), square frame shape pipeline (27) are fixed around the top of upper plate (23), square frame shape pipeline (27) are connected with fan (24) through main tuber pipe (26) that pass protective housing (1), install ventilation valve (25) on main tuber pipe (26), the top of square frame shape pipeline (27) distributes all around has air outlet (28) on a plurality of, the inner wall distribution of square frame shape pipeline (27) has a plurality of side air outlet (29).

7. The high-voltage frequency converter with the safety protection structure according to claim 1, wherein: exhaust pipe (14) are installed to top one side of protective housing (1), install draught fan (13) on exhaust pipe (14), the top of exhaust pipe (14) is fixed with fan housing (15).

8. A working method of a high-voltage frequency converter with a safety protection structure is characterized in that: the device comprises the following specific operation steps:

the method comprises the following steps: the method comprises the steps that a high-voltage frequency converter body (6) is arranged inside a protective box (1), a voltage sensor (30) is arranged inside the high-voltage frequency converter body (6), a box door (4) is closed, and the box door (4) is locked under the matching of an electronic lock (12) and a lock hole (34);

step two: when maintenance is needed, the voltage sensor (30) detects the voltage inside the high-voltage frequency converter body (6), and when the voltage is detected, the PLC (32) controls the speed reducing motor (10) and the electronic lock (12) to be incapable of working;

step three: when no voltage is detected, the PLC (32) controls the electronic lock (12) to be opened, and simultaneously controls the speed reducing motor (10) to work to drive the reciprocating screw rod (8) to rotate, so that the sliding block (16) is driven to move in the sliding groove (9), and the box door (4) is opened;

step four: the working parameters of the high-voltage frequency converter body (6) are detected through the frequency conversion power sensor (31), the collected signals are transmitted to the PLC controller (32), and the signals are transmitted to the receiving terminal (5) through the wireless communication module (33) after being processed by the PLC controller (32).

Technical Field

The invention relates to the technical field of high-voltage frequency converters, in particular to a high-voltage frequency converter with a safety protection structure and a working method thereof.

Background

The frequency converter is an electric energy control device which converts a power frequency power supply into another frequency by utilizing the on-off action of a power semiconductor device. With the rapid development of modern power electronic technology and microelectronic technology, high-voltage high-power variable-frequency speed regulation devices are continuously mature, and the high-voltage problem which is difficult to solve originally is solved well in recent years by device series connection or unit series connection. The high-voltage high-power variable-frequency speed regulation device is widely applied to various fans, water pumps, compressors, rolling mills and the like in industries such as large-scale mining production plants, petrochemical industry, municipal water supply, metallurgical steel, electric power energy and the like.

The existing high-voltage frequency converter needs manual power-off of workers in the maintenance process, if the power-off is forgotten before maintenance, the risk of electric shock can be caused, and the use safety is low. Therefore, it is necessary to design a high-voltage inverter with a safety protection structure and an operating method thereof.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the high-voltage frequency converter with the safety protection structure and the working method thereof.

In order to achieve the purpose, the invention provides the following technical scheme: a high-voltage frequency converter with a safety protection structure and a working method thereof comprise a protective box, wherein a damping bracket is arranged at the center of the inner wall of the bottom of the protective box, a high-voltage frequency converter body is arranged at the center of the top of the damping bracket, a lower chute is arranged at one side of the bottom of the protective box, a reciprocating lead screw is rotatably connected inside the lower chute, a speed reduction motor which is in driving connection with the reciprocating lead screw is arranged at one side of the bottom of the protective box, a sliding block which slides inside the lower chute is connected on the reciprocating lead screw in a meshed manner, the sliding block is fixed at the corner position at one side of the bottom of the box door, an electronic lock is arranged at the center of one side of the protective box, a lock hole which is matched with the electronic lock for use is arranged on the box door, a voltage sensor is arranged inside the high-voltage frequency converter body, the control panel electric connection gear motor and electronic lock, voltage sensor electric connection PLC controller's input, PLC controller's output electric connection gear motor and electronic lock.

Preferably, the internally mounted of high-voltage inverter body has frequency conversion power sensor, the internally mounted of control panel has wireless communication module, frequency conversion power sensor electric connection PLC controller's input, PLC controller's output passes through wireless communication module and is connected with receiving terminal.

Preferably, the wireless communication module follows a TCP/IP protocol, and the wireless communication module adopts 4G and 5G networks.

Preferably, the roller is installed on one side of the top of the box door, and the roller is connected inside an upper chute formed in the top of the protective box in a rolling manner.

Preferably, shock absorber support includes lower plate, cover seat, first supporting spring, flexible seat, second supporting spring and upper plate, the lower plate is fixed in the bottom inner wall center department of protective housing, the top of lower plate is fixed with the cover seat, the outer wall of cover seat cup joints and is fixed with flexible seat, the cover seat is provided with first supporting spring with the inside of flexible seat, the second supporting spring has been cup jointed with the outer wall of flexible seat to the cover seat, the upper plate is installed at the top of flexible seat, the top center department of upper plate installs the high-voltage inverter body, the top of upper plate is provided with dust removal subassembly all around.

Preferably, the dust removal subassembly includes fan, vent valve, main tuber pipe, square frame shape pipeline, goes up air outlet and side air outlet, square frame shape pipeline is fixed around the top of upper plate, square frame shape pipeline is connected with the fan through the main tuber pipe that passes the protective housing, install the vent valve on the main tuber pipe, the top of square frame shape pipeline distributes all around has a plurality of to go up the air outlet, the inner wall distribution of square frame shape pipeline has a plurality of side air outlet.

Preferably, the exhaust pipe is installed to top one side of protective housing, install the draught fan on the exhaust pipe, the top of exhaust pipe is fixed with the fan housing.

A working method of a high-voltage frequency converter with a safety protection structure comprises the following specific operation steps:

the method comprises the following steps: the method comprises the following steps of installing a high-voltage frequency converter body in a protective box, installing a voltage sensor in the high-voltage frequency converter body, closing a box door, and locking the box door under the matching of an electronic lock and a lock hole;

step two: when maintenance is needed, the voltage sensor detects the voltage inside the high-voltage frequency converter body, and when the voltage is detected, the PLC controller controls the speed reduction motor and the electronic lock to be incapable of working;

step three: when no voltage is detected, the PLC controller controls the electronic lock to be opened, and simultaneously controls the speed reducing motor to work to drive the reciprocating screw rod to rotate, so that the sliding block is driven to move in the sliding groove, and the box door is opened;

step four: the working parameters of the high-voltage frequency converter body are detected through the variable-frequency power sensor, the collected signals are transmitted to the PLC, and the signals are transmitted to the receiving terminal through the wireless communication module after being processed by the PLC.

The invention has the beneficial effects that:

1. the high-voltage frequency converter body is arranged inside the protective box, the voltage sensor is arranged inside the high-voltage frequency converter body, the box door is closed, the box door is locked under the matching of the electronic lock and the lock hole, when maintenance is needed, the voltage sensor detects the voltage inside the high-voltage frequency converter body, when the voltage is detected, the PLC controller controls the speed reduction motor and the electronic lock to be incapable of working, when no voltage is detected, the PLC controller controls the electronic lock to be opened, and simultaneously controls the speed reduction motor to work, so that the reciprocating lead screw is driven to rotate, the slide block is driven to move inside the sliding groove, the box door is opened, the accidental electric shock of a worker can be prevented, the worker can be prevented from performing maintenance work under the electrified state of the high-voltage frequency converter body, and the use safety is greatly improved;

2. the working parameters of the high-voltage inverter body are detected through the variable-frequency power sensor, the collected signals are transmitted to the PLC controller, and the PLC controller transmits the processed signals to the receiving terminal through the wireless communication module, so that remote data transmission is facilitated, managers can remotely check the working state of the high-voltage inverter body, and timely processing is facilitated;

3. the high-voltage frequency converter body is fixed on the top of the upper base plate, so that the upper base plate moves downwards, the first supporting spring and the second supporting spring are compressed under stress, and the high-voltage frequency converter body has a good damping function under the reverse acting force of the first supporting spring and the second supporting spring;

4. the fan work makes wind enter into the inside of square frame shape pipeline through the main air pipe, and from last air outlet and side air outlet play air-out, makes it can form an air curtain area around the high-voltage inverter body, can not only play the function of dust removal to the high-voltage inverter body, can play the effect of cooling to the high-voltage inverter body moreover.

Drawings

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

FIG. 1 is a schematic view of the overall plan structure of the present invention;

FIG. 2 is a schematic three-dimensional structure of the door of the present invention;

FIG. 3 is a schematic plan view of the shock mount of the present invention;

FIG. 4 is a schematic plan view of the dust removing assembly of the present invention;

FIG. 5 is a schematic diagram of an internal planar structure of a high-voltage inverter body according to the present invention;

FIG. 6 is a schematic view of the internal structure of the control panel according to the present invention;

reference numbers in the figures: 1. a protective box; 2. an upper chute; 3. a control panel; 4. a box door; 5. a receiving terminal; 6. a high-voltage frequency converter body; 7. a shock-absorbing support; 8. a reciprocating screw rod; 9. a lower chute; 10. a reduction motor; 11. a dust removal assembly; 12. an electronic lock; 13. an induced draft fan; 14. an exhaust duct; 15. a fan housing; 16. a slider; 17. a roller; 18. a lower base plate; 19. a sleeve seat; 20. a first support spring; 21. a telescopic base; 22. a second support spring; 23. an upper base plate; 24. a fan; 25. a vent valve; 26. a main air duct; 27. a square frame-shaped pipe; 28. an upper air outlet; 29. a side air outlet; 30. a voltage sensor; 31. a variable frequency power sensor; 32. a PLC controller; 33. a wireless communication module; 34. and (6) locking the hole.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings 1 to 6.

As shown in fig. 1 to 6, the present invention provides the following technical solutions: a high-voltage frequency converter with a safety protection structure and a working method thereof comprise a protective box 1, a damping bracket 7 is arranged at the center of the inner wall of the bottom of the protective box 1, a high-voltage frequency converter body 6 is arranged at the center of the top of the damping bracket 7, a lower chute 9 is arranged at one side of the bottom of the protective box 1, a reciprocating screw 8 is rotatably connected inside the lower chute 9, a speed reducing motor 10 which is in driving connection with the reciprocating screw 8 is arranged at one side of the bottom of the protective box 1, a slide block 16 which slides inside the lower chute 9 is connected to the reciprocating screw 8 in a meshing manner, the slide block 16 is fixed at the corner position of one side of the bottom of the box door 4, an electronic lock 12 is arranged at the center of one side of the protective box 1, a lock hole 34 which is matched with the electronic lock 12 is arranged on the box door 4, a voltage sensor 30 is, the internally mounted of control panel 3 has PLC controller 32, control panel 3 electric connection gear motor 10 and electronic lock 12, voltage sensor 30 electric connection PLC controller 32's input, and PLC controller 32's output electric connection gear motor 10 and electronic lock 12.

The internally mounted of high-voltage inverter body 6 has frequency conversion power sensor 31, and the internally mounted of control panel 3 has wireless communication module 33, and frequency conversion power sensor 31 electric connection PLC controller 32's input, PLC controller 32's output passes through wireless communication module 33 and is connected with receiving terminal 5.

The wireless communication module 33 follows the TCP/IP protocol, and the wireless communication module 33 employs 4G and 5G networks to facilitate remote transmission of data.

The gyro wheel 17 is installed to the top one side of chamber door 4, and inside the last spout 2 that protective housing 1 top was seted up was connected in the gyro wheel 17 roll, and the gyro wheel 17 rolls in the inside of last spout 2, and frictional force is little.

Shock-absorbing support 7 includes lower plate 18, cover seat 19, first supporting spring 20, flexible seat 21, second supporting spring 22 and upper plate 23, lower plate 18 is fixed in the bottom inner wall center department of protective housing 1, the top of lower plate 18 is fixed with cover seat 19, the outer wall of cover seat 19 cup joints and is fixed with flexible seat 21, cover seat 19 is provided with first supporting spring 20 with the inside of flexible seat 21, cover seat 19 has cup jointed second supporting spring 22 with the outer wall of flexible seat 21, upper plate 23 is installed at the top of flexible seat 21, high-voltage inverter body 6 is installed at the top center department of upper plate 23, the top of upper plate 23 is provided with dust removal subassembly 11 all around.

The dust removal assembly 11 comprises a fan 24, a ventilation valve 25, a main air pipe 26, a square-shaped pipeline 27, an upper air outlet 28 and a side air outlet 29, the square-shaped pipeline 27 is fixed around the top of the upper base plate 23, the square-shaped pipeline 27 is connected with the fan 24 through the main air pipe 26 penetrating through the protection box 1, the ventilation valve 25 is installed on the main air pipe 26, the plurality of upper air outlets 28 are distributed around the top of the square-shaped pipeline 27, and the plurality of side air outlets 29 are distributed on the inner wall of the square-shaped pipeline 27.

An exhaust pipe 14 is installed on one side of the top of the protection box 1, an induced draft fan 13 is installed on the exhaust pipe 14, and a fan cover 15 is fixed at the top end of the exhaust pipe 14 to facilitate air exhaust.

A working method of a high-voltage frequency converter with a safety protection structure comprises the following specific operation steps:

the method comprises the following steps: installing a high-voltage frequency converter body 6 in the protection box 1, installing a voltage sensor 30 in the high-voltage frequency converter body 6, closing the box door 4, and locking the box door 4 under the matching of the electronic lock 12 and the lock hole 34;

step two: when maintenance is needed, the voltage sensor 30 detects the voltage inside the high-voltage inverter body 6, and when the voltage is detected, the PLC controller 32 controls the reduction motor 10 and the electronic lock 12 to be incapable of working;

step three: when no voltage is detected, the PLC 32 controls the electronic lock 12 to be opened, and simultaneously controls the speed reducing motor 10 to work to drive the reciprocating screw rod 8 to rotate, so that the sliding block 16 is driven to move in the sliding groove 9, and the box door 4 is opened;

step four: the working parameters of the high-voltage frequency converter body 6 are detected through the frequency conversion power sensor 31, the collected signals are transmitted to the PLC controller 32, and the signals are transmitted to the receiving terminal 5 through the wireless communication module 33 after being processed by the PLC controller 32.

When the invention is used, the high-voltage frequency converter body 6 is arranged inside the protective box 1, the voltage sensor 30 is arranged inside the high-voltage frequency converter body 6, the box door 4 is closed, the box door 4 is locked under the cooperation of the electronic lock 12 and the lock hole 34, when maintenance is required, the voltage sensor 30 detects the voltage inside the high-voltage inverter body 6, when the voltage is detected, the PLC controller 32 controls the speed reducing motor 10 and the electronic lock 12 to be out of work, when no voltage is detected, the PLC 32 controls the electronic lock 12 to be opened, and simultaneously controls the speed reducing motor 10 to work to drive the reciprocating screw rod 8 to rotate, thereby driving the slide block 16 to move in the chute 9, opening the box door 4, not only preventing the staff from getting electric shock accidentally, moreover, the maintenance work of workers can be prevented from being carried out under the state that the high-voltage frequency converter body 6 is electrified, and the use safety is greatly improved;

the working parameters of the high-voltage frequency converter body 6 are detected through the variable-frequency power sensor 31, the collected signals are transmitted to the PLC controller 32, and the signals are transmitted to the receiving terminal 5 through the wireless communication module 33 after being processed by the PLC controller 32, so that remote data transmission is facilitated, managers can remotely check the working state of the high-voltage frequency converter body 6, and timely processing is facilitated;

fixing the high-voltage frequency converter body 6 on the top of the upper bottom plate 23 to cause the upper bottom plate 23 to move downwards, so that the first supporting spring 20 and the second supporting spring 22 are compressed under force, and under the reverse acting force of the first supporting spring 20 and the second supporting spring 22, the high-voltage frequency converter has a good damping function;

24 work of fan makes wind enter into the inside of square frame shape pipeline 27 through main air pipe 26, and from last air outlet 28 and the air-out of side air outlet 29 play the air-out, makes it can form an air curtain area around high-voltage inverter body 6, can not only play the function of dust removal to high-voltage inverter body 6, can play the effect of cooling to high-voltage inverter body 6 moreover.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.