CN210985665U

CN210985665U - Active electric energy quality comprehensive treatment device

Info

Publication number: CN210985665U
Application number: CN201922488204.5U
Authority: CN
Inventors: 孙琦
Original assignee: Chongqing Lgete Electric Co ltd
Current assignee: Chongqing Lgete Electric Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-07-10
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a power equipment technical field, in particular to active electric energy quality synthesizes treatment device, the power distribution box comprises a box body, be equipped with active electric power filtering subassembly in the box, leading flank all is equipped with a plurality of louvres with the trailing flank on the box, the fixed a plurality of radiator fan that are provided with in inside side of box trailing flank, the inside side of box leading flank is equipped with the static dust absorption subassembly, the static dust absorption subassembly includes dust absorption box, positive electrode plate and negative electrode plate, dust absorption box side is equipped with the horizontally and leads to the groove, lead to the length phase-match of groove length and leading flank louvre and lead to one side opening near the louvre, the negative electrode plate sets up at the inside top surface that leads to the groove, lead to the inside bottom surface of groove and seted up, the positive electrode plate sets up the. The utility model provides an active power filter inside easily save the dust and unable clearance when adopting the fan to dispel the heat to influence the problem of normal work.

Description

Active electric energy quality comprehensive treatment device

Technical Field

The invention relates to the technical field of power equipment, in particular to an active power quality comprehensive treatment device.

Background

The harmonic wave is generated because a sine wave voltage is applied to a nonlinear load, the current becomes a non-sine wave, and the non-sine wave current generates a voltage drop on the impedance of a power grid, so that the voltage waveform also becomes a non-sine wave. Most of loads widely used in the industries of communication, semiconductors, petrochemical industry, chemical fiber, steel intermediate frequency heating furnaces, automobile manufacturing and the like nowadays are nonlinear loads, such as variable frequency speed control equipment, rectifiers, uninterruptible power supplies, switching power supplies, electric arc furnaces, welding equipment, computers, elevators, variable frequency air conditioners, energy-saving lamps, copiers and the like. Due to the fact that a large amount of harmonic current generated by the nonlinear loads is in inrush with a power grid, the voltage waveform is distorted. This harmonic pollution poses serious hazards to the grid and to the users. The conventional APF active power filter can eliminate harmonic pollution, but when the APF active power filter works for a long time, an IGBT power module or an IPM power module in the power module can generate a large amount of heat during working, and if the heat cannot be discharged out of a shell in time, a circuit is burnt, so that economic loss and personal safety are caused. In addition, the traditional mode of radiating by adopting a fan is easy to accumulate dust in the active power filter, so that the dust cannot be cleaned, and the normal work of the active power filter is influenced.

Disclosure of Invention

The invention mainly aims to provide an active power quality comprehensive treatment device, which solves the problem that when a fan is adopted for heat dissipation, the interior of an active power filter is easy to accumulate dust and cannot be cleaned, so that the normal work is influenced.

In order to achieve the purpose, the invention provides an active power quality comprehensive treatment device which comprises a box body, wherein an active power filtering assembly is arranged in the box body, a plurality of heat dissipation holes are formed in the front side face and the rear side face of the box body, a plurality of heat dissipation fans are fixedly arranged on the inner side face of the rear side face of the box body, an electrostatic dust collection assembly is arranged on the inner side face of the front side face of the box body and comprises a dust collection box, a positive electrode plate and a negative electrode plate, a horizontal through groove is formed in the side face of the dust collection box, the length of the through groove is matched with the length of the heat dissipation holes in the front side face, an opening in one side of the through groove is close to the heat dissipation holes, the negative electrode plate is arranged on the top face inside the through groove.

The working principle and the advantages of the invention are as follows:

1. the heat inside the box can be taken away by the plurality of heat dissipation holes in the box and the hot air fan in the box, and the phenomenon that the temperature is too high due to continuous heat generation during the working of the power module is avoided, so that the active power filter cannot normally work.

2. The setting of static dust absorption subassembly, through the effect of electrostatic absorption for the dust that gets into and take the negative charge from the louvre can be adsorbed on the positive plate, reaches the effect that the dust was collected, and dust box side is equipped with the horizontally and leads to the groove in addition, can further improve the effect that the dust was collected, consequently makes when dispelling the heat through the fan, and the dust that gets into box inside can collect together, reduces the influence that causes active power filter normal work, and also makes things convenient for subsequent clearance moreover.

Furthermore, the electrostatic dust collection assembly further comprises a dust filter plate, and the dust filter plate is arranged on the other side opening of the through groove.

Inside the reduction dust that the dust filter can be further got into the box, avoided causing the influence to active power filter's normal work.

Further, the side of box is equipped with the exit that is used for getting to put the electrostatic absorption subassembly, the inside bottom surface of box is equipped with the spout, dust absorption box and spout sliding connection, dust absorption box bottom is equipped with two wiring contacts, and two wiring contacts are electric connection positive electrode plate and negative electrode plate respectively, the spout bottom surface is equipped with two metal shrapnels, and two metal shrapnels connect the positive negative pole of power respectively, and when the electrostatic absorption subassembly was placed in the box, two metal shrapnels contacted with two wiring contacts respectively.

The inlet and the outlet and the sliding groove are arranged, so that the electrostatic dust collection assembly can be conveniently taken out of the box body, and the dust can be conveniently and intensively cleaned.

Furthermore, the inlet and the outlet are provided with baffle plates, and the upper parts of the baffle plates are hinged on the side wall outside the box body.

The baffle plate can prevent dust from entering.

Further, still be equipped with controller and temperature sensor in the box, temperature sensor and radiator fan all are connected with the controller electricity.

The controller can conveniently open the cooling fan according to the temperature in the box body, so that the working efficiency is improved.

Further, the upper surface of the box body is provided with a touch display screen which is electrically connected with the controller.

And the data viewing and the control parameter input are convenient.

Furthermore, be provided with a plurality of location archs on the bottom surface in the box, active power filter subassembly passes through screw fixed mounting on the location arch, and the location arch is the elasticity material.

The device generally jolts and shakes during transportation by truck and installation, and the early failure of device can be led to in the mechanical shock that lasts, and the setting of location arch can be fixed active power filter subassembly and can also avoid shaking and assaulting.

Furthermore, the positioning bulge is cylindrical, and the side surface of the circumferential surface of the positioning bulge is engraved with a spiral engraved groove.

The setting of sculpture groove for the protruding ascending bending in the axial of location is easier, reaches the effect of buffering, and further avoid shaking and assault.

Further, the cross section of the groove is triangular. Avoid shaking and the effectual of impact, the line is carved simply and conveniently.

Further, the number of the heat radiation fans is three. In limited box inner space, can improve the radiating effect.

Drawings

Fig. 1 is an isometric view of an active power quality comprehensive treatment device in an embodiment of the invention;

fig. 2 is a front sectional view of the electrostatic dust collection assembly.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the box body 1, the baffle 2, the heat dissipation holes 3, the wiring terminal 4, the touch display screen 5, the dust collection box 6, the negative electrode plate 7, the through groove 8, the collection groove 9, the positive electrode plate 10, the wiring contact 11, the metal elastic sheet 12 and the sliding groove 13.

Example one

An active power quality comprehensive treatment device is basically shown in figures 1 and 2 and comprises a box body 1, wherein the box body 1 is made of stainless steel.

An active power filter assembly is arranged in the box body 1, in the prior art, the active power filter assembly generally comprises an instruction current operation circuit and a compensation current generation circuit, and each harmonic current and each reactive current in a power grid are detected in real time through an external mutual inductor to obtain the instruction current. The command current arithmetic circuit can monitor the current in a line in real time, converts an analog current signal into a digital signal, sends the digital signal into a high-speed Digital Signal Processor (DSP) to process the signal, separates harmonic waves from fundamental waves, sends a driving pulse to the compensation current generating circuit in a pulse width modulation (PMW) signal form, receives the driving pulse to start working, generates a compensation current which is equal to the amplitude of the harmonic current of the power grid and has opposite polarity, injects the compensation current into the power grid, compensates or counteracts the harmonic current, and actively eliminates the power harmonic. When harmonic and reactive current are generated on the load side in the power supply process of the power grid, the harmonic current and the reactive current are not generated on the system side, so that other key sensitive equipment of a user can normally operate in an approximately undisturbed electrical environment, and the power grid is not polluted.

The box 1 is provided with a plurality of heat dissipation holes 3 on the front side and the rear side, and a plurality of heat dissipation fans are fixedly arranged on the inner side of the rear side of the box 1. The front side of the box body 1 is also provided with a binding post 4, the binding post 4 is electrically connected with an instruction current operation circuit and is also used for electrically connecting an external mutual inductor, specifically comprises four posts, namely a post A, a post B, a post C and a post N, and is respectively used for correspondingly connecting A, B, C three-phase and a neutral line N of a power grid.

Be equipped with the electrostatic absorption subassembly on the inside side of box 1 leading flank, the electrostatic absorption subassembly includes dust absorption box 6, positive electrode plate 10, negative electrode plate 7 and dust filter, dust absorption box 6 side is equipped with the logical groove 8 that the level runs through, lead to 8 length and leading flank louvre 3's length phase-matchs and lead to one side opening of groove 8 near the louvre 3 of box 1 leading flank, the dust filter is fixed on leading to the other side opening of groove 8, specifically fix on dust absorption box 6 through the fix with screw. The negative electrode plate 7 is adhered to the top surface of the inside of the through groove 8, the collecting groove 9 is formed in the bottom surface of the inside of the through groove 8, and the positive electrode plate 10 is adhered to the bottom surface of the collecting groove 9.

An inlet and an outlet for taking and placing the electrostatic dust collection assembly are arranged on the right side surface of the box body 1, a baffle 2 is arranged on the inlet and the outlet, and the upper part of the baffle 2 is hinged on the side wall outside the box body 1. The inside bottom surface of box 1 is equipped with spout 13, the lower part and the spout 13 sliding connection of dust absorption box 6, dust absorption box 6 bottom is fixed with two wiring contacts 11, two wiring contacts 11 are electric connection positive electrode plate 10 and negative electrode plate 7 respectively, spout 13 bottom surface is equipped with two metal shrapnel 12, two metal shrapnel 12 are connected the positive negative pole of power respectively, when the electrostatic absorption subassembly was placed in box 1, two metal shrapnel 12 contacted with two wiring contacts 11 respectively, the material of wiring contact 11 and metal shrapnel 12 is copper.

The box body 1 is also internally provided with a controller and a temperature sensor, and the temperature sensor and the cooling fan are electrically connected with the controller. The upper surface of the box body 1 is fixedly provided with a touch display screen 5, the touch display screen 5 is electrically connected with a controller, and the controller is a DSP processor.

The specific implementation process is as follows:

IGBT power module or IPM power module in the power module can produce a large amount of heats at the during operation, and temperature sensor is used for gathering the temperature in the box 1 in real time, and temperature sensor can predetermine the threshold value that detects, and when the temperature reached the threshold value, for example 60 ℃, the controller control radiator fan began work, the heat in the discharge box 1. Because the front and the back of the box body 1 are provided with the heat dissipation holes 3, the air can circulate, and the heat dissipation effect is achieved. But dust in the air is easily introduced into the interior of the cabinet 1 from the heat radiating holes 3 in the front of the cabinet 1. And the setting of the electrostatic dust collection subassembly of this scheme, through electrostatic absorption's effect, make from the dust that 3 louvres got into and take the negative charge, can be adsorbed on the positive plate, reach the effect that the dust was collected, and 6 sides of suction box are equipped with horizontally and lead to groove 8, can further improve the effect that the dust was collected, consequently when making to dispel the heat through the fan, the dust that gets into 1 inside of box can be collected together, reduce the influence that causes active power filter normal work, and also make things convenient for subsequent clearance. The dust filter can further reduce that the dust gets into inside 1 box, causes the influence to active power filter's normal work. The arrangement of the inlet and the outlet and the sliding groove 13 is convenient for taking out the electrostatic dust collection assembly from the box body 1, thereby facilitating the centralized cleaning of dust.

Example two

The difference between the second embodiment and the first embodiment is that a plurality of positioning protrusions are arranged on the inner bottom surface of the box body 1, the active power filter assembly is fixedly installed on the positioning protrusions through screws, and the positioning protrusions are made of elastic materials and rubber materials. The positioning bulge is cylindrical, and the side surface of the circumferential surface of the positioning bulge is engraved with a spiral engraved groove. The section of the groove is triangular.

The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Active electric energy quality comprehensive treatment device, including the box, its characterized in that: the improved dust collection box is characterized in that an active power filtering assembly is arranged in the box body, a plurality of radiating holes are formed in the front side face and the rear side face of the box body, a plurality of radiating fans are fixedly arranged on the inner side face of the rear side face of the box body, an electrostatic dust collection assembly is arranged on the inner side face of the front side face of the box body and comprises a dust collection box, a positive electrode plate and a negative electrode plate, a horizontal through groove is formed in the side face of the dust collection box, the length of the through groove is matched with the length of the radiating holes in the front side face, one side opening of the through groove is close to the radiating holes, the negative electrode plate is arranged on the top face inside the through.

2. The active power quality comprehensive treatment device according to claim 1, characterized in that: the electrostatic dust collection assembly further comprises a dust filter plate, and the dust filter plate is arranged on the other side opening of the through groove.

3. The active power quality comprehensive treatment device according to claim 1, characterized in that: the side of box is equipped with the exit that is used for getting to put the electrostatic absorption subassembly, the inside bottom surface of box is equipped with the spout, dust absorption box and spout sliding connection, dust absorption box bottom is equipped with two wiring contacts, and two wiring contacts are electric connection positive electrode plate and negative electrode plate respectively, the spout bottom surface is equipped with two metal shrapnels, and two metal shrapnels are the positive negative pole of connecting respectively, and when the electrostatic absorption subassembly was placed in the box, two metal shrapnels contacted with two wiring contacts respectively.

4. The active power quality comprehensive treatment device according to claim 3, characterized in that: and the inlet and the outlet are provided with baffle plates, and the upper parts of the baffle plates are hinged on the side wall outside the box body.

5. The active power quality comprehensive treatment device according to claim 1, characterized in that: and a controller and a temperature sensor are also arranged in the box body, and the temperature sensor and the cooling fan are electrically connected with the controller.

6. The active power quality comprehensive treatment device according to claim 5, characterized in that: the upper surface of the box body is provided with a touch display screen which is electrically connected with the controller.

7. The active power quality comprehensive treatment device according to claim 1, characterized in that: the bottom surface is provided with a plurality of positioning bulges in the box body, the active power filter assembly is fixedly arranged on the positioning bulges through screws, and the positioning bulges are made of elastic materials.

8. The active power quality comprehensive treatment device according to claim 7, characterized in that: the positioning bulge is cylindrical, and a spiral groove is carved on the side surface of the circumferential surface of the positioning bulge.

9. The active power quality comprehensive treatment device according to claim 8, characterized in that: the cross section of the engraving groove is triangular.

10. The active power quality comprehensive treatment device according to claim 1, characterized in that: the number of the heat radiation fans is three.