CN214204443U

CN214204443U - 690V active filter device with simple and light structure

Info

Publication number: CN214204443U
Application number: CN202022995835.9U
Authority: CN
Inventors: 齐新新; 霍亮亮; 黄志毅
Original assignee: Shanghai Xixing Technology Co ltd
Current assignee: Shanghai Xixing Technology Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-09-14
Anticipated expiration: 2030-12-14

Abstract

The utility model provides a 690V active filter device that structure is light and simple, include: circuit board, electrical component, mounting member; the mount includes: a sheet metal part; the sheet metal part includes: the box body comprises a box body front plate (1), a box body rear plate (2), a box body left plate (3), a box body right plate (4), a box body bottom plate (5), a box body top plate (6), a fan mounting plate (7) and a capacitance plate mounting plate (8); the electrical component includes: a fan and a capacitor PCB; the circuit board is arranged in a space enclosed by the box body front plate (1), the box body rear plate (2), the box body left plate (3), the box body right plate (4), the box body bottom plate (5) and the box body top plate (6); the electrical component is arranged on the circuit board; the fan is arranged on the fan mounting plate (7); the capacitor PCB is arranged on the capacitor plate mounting plate (8). The utility model discloses can be used for the serious industry occasion of electrically conductive dust.

Description

690V active filter device with simple and light structure

Technical Field

The utility model relates to a wave filter technical field specifically relates to a 690V active filter device of light and simple structure.

Background

At present, the 690V active filter has achieved considerable success in the long-term development in China, and the commercialization of the active filter is realized. But still has many disadvantages such as big appearance, not compact structure, inconvenient maintenance, high temperature, etc. With the development of the industry, it is important to reduce the weight of the active filter, simplify the design of maintenance and installation, and improve the heat dissipation of the module.

Patent document CN204741275U discloses an active filter convenient to install and a large-capacity active filter group composed of the active filter, which mainly solve the problems that in the prior art, the space required for installing an active filter product is large, but the space for installing the active filter is limited, so that the equipment maintenance difficulty is increased, and the installation difficulty is large. The active filter convenient to install comprises a power compensation unit with an IGBT module, a plurality of single-phase full-bridge units and a main controller, wherein the single-phase full-bridge units are connected with a power grid through the power compensation unit; the single-phase full-bridge unit consists of a single-phase full-bridge inverter, a capacitor soft start circuit connected with the single-phase full-bridge inverter in series, an LCL filter connected with the single-phase full-bridge inverter in series, and a direct-current side support capacitor connected with the single-phase full-bridge inverter in parallel. There is still room for improvement in structure and performance.

SUMMERY OF THE UTILITY MODEL

To overcome the drawbacks of the prior art, the present invention provides a 690V active filter device with a simple structure.

According to the utility model provides a pair of 690V active filter device of light and simple structure, include: circuit board, electrical component, mounting member and group mounting fitting; the mount includes: a sheet metal part; the sheet metal part includes: the box body comprises a box body front plate 1, a box body rear plate 2, a box body left plate 3, a box body right plate 4, a box body bottom plate 5, a box body top plate 6, a fan mounting plate 7 and a capacitance plate mounting plate 8; the electrical component includes: a fan and a capacitor PCB; the box top plate 6 is arranged at the top of the 690V active filter device with a simple structure; the box bottom plate 5 is arranged at the bottom of a 690V active filter device with a simple structure; the front plate 1 of the box body is arranged at the front part of a 690V active filter device with a simple structure; the box body back plate 2 is arranged at the back part of a 690V active filter device with a simple structure; the left plate 3 of the box body is arranged at the left part of the 690V active filter device with a simple structure; the right box plate 4 is arranged at the right part of the 690V active filter device with a simple structure; the circuit board is arranged in a space enclosed by the box body front plate 1, the box body rear plate 2, the box body left plate 3, the box body right plate 4, the box body bottom plate 5 and the box body top plate 6; the electrical component is arranged on the circuit board; the fan is arranged on the fan mounting plate 7; the capacitor PCB is mounted on the capacitor mounting plate 8.

Preferably, the air duct mounting plate comprises an air duct mounting plate 10;

the electrical component includes: a radiator, a wind shield;

the radiator and the wind-shielding component are mounted on the air duct mounting plate 10.

Preferably, the induction plate mounting plate 9 is also included;

the electrical component includes: the PCB comprises an inductance PCB, a filtering PCB and a terminal PCB;

the inductance PCB, the filtering PCB and the terminal PCB are arranged on the inductance board mounting plate 9.

Preferably, the device also comprises a control mounting plate 11;

the electrical component includes: the PCB comprises a power supply PCB, a signal PCB, a sampling PCB and a long PCB;

the power supply PCB, the signal PCB, the sampling PCB and the strip PCB are arranged on the control installation plate 11.

Preferably, the electrical component comprises: a thin film capacitor;

the thin film capacitor is arranged on the circuit board in a triangular mode.

Preferably, the number of the circuit boards is one or more;

the inductance PCB, the filtering PCB and the terminal PCB are dispersedly mounted on different circuit boards.

Preferably, the mounting plates of all circuit boards are matched with the circuit boards, so that the 690V active filter device with a simple structure is divided into an upper cavity and a lower cavity.

Preferably, the method further comprises the following steps: insulating plate in IGBT module

And an insulating plate in the IGBT module is lapped on the inductance plate mounting plate 9.

Preferably, the heat sink includes: a heat sink;

the fin thickness of the radiating fin, the fin length of the radiating fin and the substrate thickness of the radiating fin adopt set proportion.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model provides a structural design scheme of an active power filter aiming at the current situation that the size of the active filter is bigger than normal, the heat dispersion is poor and the dustproof effect is poor due to the unreasonable design of the existing active filter, so as to improve the heat dispersion and the dustproof effect, the output current of the active power filter with the structure can reach 150A, and the voltage can be used in the industrial occasion with serious conductive dust under the 690V working condition;

2. the utility model provides an active filter device with a simple and light structure, which optimizes the internal arrangement, reduces the volume of the device and effectively lightens the weight of the device, and the structure of the device is not only convenient for processing and production, but also beneficial to the use and maintenance of the device;

3. the utility model selects the form of single tube IGBT and F-shaped radiating fins to radiate heat in a centralized way, thereby better playing the radiating effect, and simultaneously adopts the radiating fan with large ventilation volume and low noise to better improve the radiating performance; and the upper and lower layering reaches better dustproof effect.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is the overall structure diagram of the 690V active filter device of the present invention.

The front isometric view is on the left side of the drawing, and the rear isometric view is on the right side of the drawing. 4 is a right plate of the box body, and 6 is a top plate of the box body;

fig. 2 is a schematic right view of the 690V active filter device of the present invention.

Fig. 3 is the utility model discloses an insulation board overlap joint is in the schematic diagram in the inductance backup pad in the IGBT module.

FIG. 4 is the schematic diagram of the IGBT module of the utility model

In the figure: 1. the box body comprises a box body front plate, a box body rear plate, a box body left plate, a box body right plate, a box body bottom plate, a box body top plate, a fan mounting plate, a capacitor plate mounting plate, an inductor plate mounting plate, an air duct plate, a control mounting plate, a radiating fin and an insulating plate, wherein the box body front plate is 2, the box body rear plate is 3, the box body left plate is 4, the box body right plate is 5, the box body bottom plate is 6, the box body top plate is 7, the fan mounting plate is 8, the capacitor plate mounting plate is 9, the inductor plate mounting plate is 10, the air duct plate is 11, the control mounting plate is 12, and the insulating plate is 13.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

The active filter device with a light and simple structure optimizes the internal arrangement, reduces the volume of the device and effectively lightens the weight of the device, and the structure of the device is not only convenient for processing and production, but also beneficial to the use and maintenance of the device; meanwhile, a single-tube IGBT and F-shaped radiating fin mode is selected, heat is radiated in a concentrated mode, the radiating effect is better exerted, and meanwhile, a radiating fan with large ventilation volume and low noise is adopted, so that the radiating performance is better improved; and the upper and lower layering reaches better dustproof effect.

The utility model discloses active filter device specifically includes: circuit board, electrical components, installed part and group installation accessory four big kinds, especially, the utility model discloses mainly lie in the optimization of structural technology, so do not do the detailed description here to circuit board and electrical components.

The mounting piece comprises three types of sheet metal parts, an insulating plate 13 and an F-shaped radiating fin 12. The sheet metal part comprises a box body front plate 1, a box body rear plate 2, a box body left plate 3, a box body right plate 4, a box body bottom plate 5 and a box body top plate 6 which form a box body, and further comprises a fan mounting plate 7 for mounting a fan, a capacitor mounting plate 8 for mounting a capacitor PCB, an inductor mounting plate 9 for mounting an inductor PCB, a filter PCB and a terminal PCB, an air duct mounting plate 10 for fixing a radiator and shielding wind, a control mounting plate 11 for a power supply PCB, a signal PCB, a sampling PCB and a strip PCB and the like; the mounting fittings comprise screw nuts, binding belts, binding seats and the like; the cooling fin is used for driving the mounting device; the insulating board is used for isolating the radiating fins from the IGBT driving PCB.

Preferably, the active filter device is assembled into a simple box-type structure through sheet metal parts, and the electric elements of the active filter device are not exposed, so that the active filter device plays a role in safety protection, is convenient to assemble and is convenient for later maintenance.

Preferably, in order to reduce the size of the capacitor plate, the thin film capacitor is arranged in a triangular mode, and space is utilized to the maximum extent; the occupied space of the capacitor PCB is shortened, and the total length of the device is shortened.

Preferably, the inductance PCB, the filter PCB and the terminal PCB are dispersed on the three circuit boards, the interval distance among the three circuit boards is enlarged as much as possible, the installation distance of the filter inductance at the lower part of the inductance supporting plate is further enlarged, and the space at the lower side of the inductance supporting plate is utilized to the maximum extent; and the heating elements are intensively placed at the circulation position of the air duct, so that later-stage centralized heat dissipation is more convenient, the size of the device is reduced, and the heat dissipation effect of the fan is exerted to a greater extent.

Preferably, the inside air-cooled heat dissipation that is of device, the radiating effect is better, and especially, radiator fan chooses for use the radiating fan that the air volume is big, and the noise is low, full play fan's radiating effect.

Preferably, around the isolated fan of fan mounting panel, avoid appearing the situation of air reflux, and inside increase the wind channel board for the circulated air flows to heating element as far as possible, with being favorable to the components and parts heat dissipation.

Preferably, the optimal proportion of the thickness of the fins, the length of the fins and the thickness of the substrate of the radiating fin is selected by simulation, the optimal utilization rate of the radiating fin is exerted, the overall length of the radiating fin is shortened to the maximum extent, the overall space of an IGBT module is reduced, the size of the device is shortened, and meanwhile the radiating requirement of a single IGBT tube can be met.

Preferably, the mounting plates of all the circuit boards are matched with the circuit boards, the device is divided into an upper cavity and a lower cavity from top to bottom, the upper cavity is a low-temperature cavity, and the lower cavity is a high-temperature cavity, so that the heat-labile components are isolated from high-temperature air, and the effect of protecting the components is achieved; meanwhile, the upper layer of threading hole and the lower layer of threading hole are isolated by the rubber ring, so that a better sealing effect is achieved, the influence of dust on an electronic layer is reduced, and the service life of the device is prolonged.

Preferably, the insulating board overlap joint has reduced inductance mounting panel, electric capacity mounting panel, IGBT module and has assembled the clearance in the IGBT module on the inductance backup pad, has improved the leakproofness in weak current chamber.

In summary, the active filter device of the utility model has compact layout, high space utilization rate and convenient assembly, disassembly and maintenance; the electronic layer components are well protected to the greater extent and the service life is prolonged; meanwhile, the heating components are concentrated, and the air cooling and natural cooling of a radiator are adopted, so that the heat dissipation of the heating components is facilitated, and the damage of heat to the components is reduced; the utility model discloses active filter dress's structural technology is that the design of overall arrangement is meticulously under the prerequisite of guaranteeing its superior function effect, has the novelty of structure, usability, reliability, superior performance such as commonality, has realized active filter device's lightweight, smart simplification and hommization.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A 690V active filter device of reduced construction, comprising: circuit board, electrical component and mounting member;

the mount includes: a sheet metal part;

the sheet metal part includes: the box body comprises a box body front plate (1), a box body rear plate (2), a box body left plate (3), a box body right plate (4), a box body bottom plate (5), a box body top plate (6), a fan mounting plate (7) and a capacitance plate mounting plate (8);

the electrical component includes: a fan and a capacitor PCB;

the top plate (6) of the box body is arranged at the top of the 690V active filter device with a simple structure;

the box bottom plate (5) is arranged at the bottom of the 690V active filter device with a simple structure;

the front plate (1) of the box body is arranged at the front part of a 690V active filter device with a simple structure;

the box body rear plate (2) is arranged at the rear part of the 690V active filter device with a simple structure;

the left plate (3) of the box body is arranged at the left part of the 690V active filter device with a simple structure;

the right box plate (4) is arranged at the right part of the 690V active filter device with a simple structure;

the circuit board is arranged in a space enclosed by the box body front plate (1), the box body rear plate (2), the box body left plate (3), the box body right plate (4), the box body bottom plate (5) and the box body top plate (6);

the electrical component is arranged on the circuit board;

the fan is arranged on the fan mounting plate (7);

the capacitor PCB is arranged on the capacitor plate mounting plate (8).

2. The 690V active filter device of claim 1, further comprising a duct mounting plate (10);

the electrical component includes: a radiator, a wind shield;

the radiator and the wind shielding component are arranged on the air duct mounting plate (10).

3. The 690V active filter arrangement of claim 1, further comprising an inductor plate mounting plate (9);

the inductance PCB, the filtering PCB and the terminal PCB are arranged on the inductance board mounting plate (9).

4. The 690V active filter device of claim 1, further comprising a control mounting plate (11);

the power supply PCB, the signal PCB, the sampling PCB and the strip PCB are arranged on the control mounting plate (11).

5. The 690V active filter arrangement of claim 1, in which the electrical components comprise: a thin film capacitor;

the thin film capacitor is arranged on the circuit board in a triangular mode.

6. The 690V active filter device of claim 3, in which the number of circuit boards is one or more;

7. The 690V active filter device of claim 6, wherein the mounting plates of all circuit boards cooperate with the circuit board to divide the 690V active filter device into upper and lower cavities.

8. The 690V active filter arrangement of claim 2, further comprising: insulating plate in IGBT module

And an insulating plate in the IGBT module is lapped on the inductance plate mounting plate (9).

9. The 690V active filter arrangement of claim 2, in which the heat sink comprises: a heat sink;