CN214480241U

CN214480241U - Flame-proof type vector frequency converter

Info

Publication number: CN214480241U
Application number: CN202120555351.4U
Authority: CN
Inventors: 孙磊; 许海财; 张启品
Original assignee: Goldbell Electric Drives And Controls Shenzhen Co ltd
Current assignee: Goldbell Electric Drives And Controls Shenzhen Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-10-22
Anticipated expiration: 2031-03-18

Abstract

The utility model belongs to the technical field of the converter technique and specifically relates to a flame-proof type vector converter, including explosion-proof casing, explosion-proof casing's top is equipped with disconnected line box, cylinder, controller, power, electric liquid push rod and riser, the through hole has been seted up at the top of disconnected line box, and the inside of through hole is equipped with the spool, and inside explosion-proof casing cuts off, prevents that converter body trouble from firing and arousing external gas explosion, can cut off behind the cable and cut off electric connection, temperature and the burning of inside and outside both ends cable through the cutting piece when the temperature is improper, avoids outside cable to fire and lights inflammable gas, produces the explosion, and the flame proof effect is better more comprehensive.

Description

Flame-proof type vector frequency converter

Technical Field

The utility model relates to a converter technical field especially relates to a flame-proof type vector converter.

Background

The basic idea of the vector frequency converter technology is to decompose the current of a motor into two currents to respectively control the excitation and the torque of the motor, thereby greatly improving the control characteristic of the alternating current motor. However, the existing vector frequency converter cannot cut off the cable when the frequency converter breaks down and fires, and cannot prevent the cable from firing to cause inflammable gas in the environment such as mine and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art and prevent that the cable from catching fire, and the flame-proof type vector converter who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the explosion-proof vector frequency converter comprises an explosion-proof shell, wherein a wire breaking box, a cylinder, a controller, a power supply, an electro-hydraulic push rod and a vertical plate are arranged at the top of the explosion-proof shell, a through hole is formed in the top of the wire breaking box, an upper wire pipe is arranged inside the through hole, a through hole is formed in the top of the explosion-proof shell, a lower wire pipe is arranged inside the through hole, a frequency converter body is arranged inside the explosion-proof shell, a cable and a temperature sensor are arranged at the top of the frequency converter body, the upper end of the cable penetrates through the lower wire pipe and the upper wire pipe, the outer wall of the cylinder is rotatably connected with a push plate, a cutting blade is fixedly connected to the right end face of the push plate, the upper end face and the lower end face of the cutting blade are respectively connected with the upper wire pipe and the lower wire pipe in a sliding manner, the rear end face of the cutting blade is connected with the vertical plate through a tension spring, a push block is fixedly connected to a telescopic rod of the electro-hydraulic push rod, and a groove is formed in the front end face of the push block, and the inner wall of the groove is connected with the push plate in a sliding manner, the power supply is electrically connected with the electro-hydraulic push rod, the controller and the temperature sensor, and the controller is in signal connection with the temperature sensor and the electro-hydraulic push rod.

Preferably, the surface of the cutting blade is coated with wear-resistant insulating coating, the front end face of the cutting blade is provided with notches the number of which is the same as that of the wires of the cable, and blades are fixedly arranged inside the notches.

Preferably, the top of the wire breaking box is provided with a junction box, the upper end of the cable penetrates through the junction box, the outer wall of the cable is provided with a sealing ring, and the outer wall of the sealing ring is bonded with the junction box.

Preferably, the outer wall of the cable is provided with two pairs of separating blocks, and the outer walls of the two pairs of separating blocks are respectively sleeved with the upper line tube and the lower line tube.

The utility model provides a pair of flame-proof type vector converter, beneficial effect lies in: inside and outside explosion-proof casing cuts off, prevents that converter body trouble from catching fire and arousing the explosion of external gas, can cut off behind the cable and cut off electric connection, the temperature and the burning of inside and outside both ends cable through the cutting piece when the temperature is improper, avoids outside cable to catch fire and ignites inflammable gas, produces the explosion, and the flame proof effect is better more comprehensive.

Drawings

FIG. 1 is a schematic diagram of a partial sectional structure of a flame-proof vector frequency converter provided by the utility model;

fig. 2 is a schematic diagram of the internal structure of a flame-proof vector frequency converter provided by the utility model;

fig. 3 is the utility model provides a structure schematic diagram cuts off of flame-proof type vector converter.

In the figure: 1. an explosion-proof housing; 2. a wire discharging pipe; 3. breaking the wire box; 4. a junction box; 5. a seal ring; 6. a separation block; 7. feeding a wire pipe; 8. a temperature sensor; 9. a cable; 10. a frequency converter body; 11. a cylinder; 12. a controller; 13. a power source; 14. a push block; 15. an electro-hydraulic push rod; 16. a vertical plate; 17. a tension spring; 18. cutting the slices; 19. a blade; 20. a push plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, an explosion-proof vector frequency converter comprises an explosion-proof shell 1, a wire breaking box 3, a cylinder 11, a controller 12, a power supply 13, an electro-hydraulic push rod 15 and a vertical plate 16 are arranged at the top of the explosion-proof shell 1, a through hole is formed at the top of the wire breaking box 3, an upper wire pipe 7 is arranged inside the through hole, a through hole is formed at the top of the explosion-proof shell 1, a lower wire pipe 2 is arranged inside the through hole, a frequency converter body 10 is arranged inside the explosion-proof shell 1, a cable 9 and a temperature sensor 8 are arranged at the top of the frequency converter body 10, the upper end of the cable 9 passes through the lower wire pipe 2 and the upper wire pipe 7, the outer wall of the cylinder 11 is rotatably connected with a push plate 20, a cutting blade 18 is fixedly connected to the right end face of the push plate 20, the upper end face and the lower end face of the cutting blade 18 are respectively connected with the upper wire pipe 7 and the lower wire pipe 2 in a sliding manner, the rear end face of the cutting blade 18 is connected with the vertical plate 16 through a tension spring 17, a push block 14 is fixedly connected to the telescopic rod of the electro-hydraulic push rod 15, the recess has been seted up to the preceding terminal surface of ejector pad 14, and the inner wall sliding connection push pedal 20 of recess, power 13 electric connection electric liquid push rod 15, controller 12 and temperature sensor 8, controller 12 signal connection temperature sensor 8 and electric liquid push rod 15, the surface coating of cutting piece 18 has wear-resisting insulating coating, the preceding terminal surface of cutting piece 18 is equipped with the breach the same with cable 9's wire quantity, and the fixed blade 19 that is provided with in inside of breach, the top of broken string box 3 is equipped with junction box 4, junction box 4 is run through to cable 9's upper end, cable 9's outer wall is equipped with sealing washer 5, sealing washer 5's outer wall bonding junction box 4, cable 9's outer wall is equipped with two pairs of spacers 6, the outer wall of two pairs of spacers 6 cup joints spool 7 and lower spool 2 respectively.

The working principle is as follows: the inside and the outside are separated by the explosion-proof shell 1, the frequency converter body 10 is prevented from being broken down and ignited to cause the explosion of external gas, the temperature sensor 8 is used for detecting the temperature of the frequency converter body 10, the controller 12 is used for judging whether the frequency converter body is in failure or not and controlling the electro-hydraulic push rod 15 to push the push plate 20 to drive the cutting piece 18 to cut the cable 9 when the temperature is abnormal, after the cable 9 is cut off, the electrical connection, the temperature and the combustion of the cable 9 at the inner end and the outer end are cut off through the cutting piece 18, the situation that the cable 9 at the outer part is ignited to ignite inflammable gas to generate explosion is avoided, the wires of the cable 9 are separately fixed through the separating block 6, so that the cut-off and the re-interconnection of the wires of the cut-off cable 9 to generate short circuit are facilitated and prevented, the abrasion-resistant insulating coating that cuts through the surface of the individual conductors of the cable 9 cooperating with the cutting blades 18 by a corresponding number and position of the individual blades 19 prevents the individual conductors of the cable 9 that are connected by the cutting blades 18 from causing short circuits.

Inside and outside explosion-proof casing 1 cuts off, prevents that converter body 10 trouble from catching fire and arousing the explosion of external gas, can cut off behind cable 9 and cut off the electric connection, the temperature and the burning of inside and outside both ends cable 9 through cutting piece 18 when the temperature is unusual, avoids outside cable 9 to catch fire and ignites inflammable gas, produces the explosion, and the flame proof effect is better more comprehensive.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The flame-proof type vector frequency converter comprises an explosion-proof shell (1) and is characterized in that a wire breaking box (3), a cylinder (11), a controller (12), a power supply (13), an electro-hydraulic push rod (15) and a vertical plate (16) are arranged at the top of the explosion-proof shell (1), a through hole is formed in the top of the wire breaking box (3), an upper wire tube (7) is arranged inside the through hole, a lower wire tube (2) is arranged inside the through hole, a frequency converter body (10) is arranged inside the explosion-proof shell (1), a cable (9) and a temperature sensor (8) are arranged at the top of the frequency converter body (10), the upper end of the cable (9) penetrates through the lower wire tube (2) and the upper wire tube (7), a push plate (20) is rotatably connected to the outer wall of the cylinder (11), and a cutting blade (18) is fixedly connected to the right end face of the push plate (20), the utility model discloses a cutting blade, including cutting blade (18), the upper and lower terminal surface of cutting blade (18) is respectively sliding connection upper line pipe (7) and lower spool (2), the rear end face of cutting blade (18) passes through extension spring (17) and connects riser (16), the telescopic link fixedly connected with ejector pad (14) of electricity liquid push rod (15), the recess has been seted up to the preceding terminal surface of ejector pad (14), and the inner wall sliding connection push pedal (20) of recess, power (13) electric connection electricity liquid push rod (15), controller (12) and temperature sensor (8), controller (12) signal connection temperature sensor (8) and electricity liquid push rod (15).

2. The flameproof vector frequency converter according to claim 1, characterized in that the surface of the cutting blade (18) is coated with a wear-resistant insulating coating, the front end face of the cutting blade (18) is provided with notches the number of which is the same as that of the wires of the cable (9), and blades (19) are fixedly arranged inside the notches.

3. The flame-proof vector frequency converter according to claim 1, characterized in that a junction box (4) is arranged at the top of the junction box (3), the upper end of the cable (9) penetrates through the junction box (4), a sealing ring (5) is arranged on the outer wall of the cable (9), and the junction box (4) is bonded to the outer wall of the sealing ring (5).

4. The flame-proof vector frequency converter according to claim 1, characterized in that the outer wall of the cable (9) is provided with two pairs of separating blocks (6), and the outer walls of the two pairs of separating blocks (6) are respectively sleeved with the upper wire tube (7) and the lower wire tube (2).