CN218213261U

CN218213261U - Partial discharge-free variable frequency test power supply

Info

Publication number: CN218213261U
Application number: CN202222081249.2U
Authority: CN
Inventors: 余学敏; 雷梦娇
Original assignee: Wuhan Guodian Mingke Electric Co ltd
Current assignee: Wuhan Guodian Mingke Electric Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2023-01-03
Anticipated expiration: 2032-08-09

Abstract

The utility model relates to the field of variable frequency power supplies, in particular to a non-partial discharge variable frequency test power supply, which comprises a power supply body, a filter screen and a cleaning mechanism, wherein the filter screen is installed inside the power supply body, the cleaning mechanism is arranged inside the power supply body and comprises a driving component, a cleaning component and a passive component, the driving component is connected with the cleaning component, the driving component is used for driving the cleaning component to move along the length direction of the filter screen, the passive component is matched with the cleaning component, and the passive component is used for driving the cleaning component to flap the filter screen in the moving process; in the use, accessible drive assembly orders about the clearance subassembly and removes, can realize the clearance to the filter screen surface, and simultaneously, passive subassembly can order about the in-process swing that the clearance subassembly moved at the level to pat the filter screen, the adnexed dust on the filter screen is got rid of with the mode of patting to the brush clearance.

Description

Partial discharge-free variable frequency test power supply

Technical Field

The utility model relates to a variable frequency power supply field, more specifically say, it relates to a frequency conversion test power is put in no office.

Background

The variable frequency power supply outputs pure sine waves by AC → DC → AC transformation of alternating current in commercial power, and the output frequency and voltage are adjustable within a certain range. It is different from frequency-changing speed-regulating controller for motor speed regulation and common AC voltage-stabilizing power supply. The ideal AC power supply features stable frequency, stable voltage, zero internal resistance and pure sine wave voltage waveform (no distortion). The variable frequency power supply is very close to an ideal alternating current power supply, so that the variable frequency power supply is increasingly used as a standard power supply in advanced and developed countries so as to provide the best power supply environment for electrical appliances and objectively check the technical performance of the electrical appliances. The variable frequency power supply mainly has two main types: a linear amplification type and an SPWM switching type.

The inside fan that all installs of variable frequency power supply on the existing market, the fan inhales the inside heat exchange and the heat dissipation of carrying on of shell air, and at the air intake's in-process, mostly is through the dust in the filter screen filtration air, and the filter screen is after long-time use, and the dust is piled up on the filter screen to influence the suction of air and power heat dissipation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a frequency conversion test power is put in no office solves among the correlation technique attached to dust on the filter screen and influences the radiating technical problem of power.

According to the utility model discloses an aspect provides a frequency conversion test power is put in no office, including power body, filter screen and clearance mechanism, the filter screen is installed inside power body, and clearance mechanism arranges inside power body, and clearance mechanism includes drive assembly, clearance subassembly and passive subassembly, and drive assembly is connected with the clearance subassembly, and drive assembly is used for ordering about the length direction removal of clearance subassembly along the filter screen, and passive subassembly cooperatees with the clearance subassembly, and passive subassembly is used for ordering about the clearance subassembly and patts the filter screen at the removal in-process.

Further: the shell of the power supply body is arranged in a double-layer mode, a cavity is formed in the middle of the shell, and the driving assembly, the cleaning assembly and the passive assembly are arranged inside the cavity.

Further: the bottom of the cavity is provided with an opening, the opening corresponds to the filter screen, and the opening is used for discharging dust.

Further, the method comprises the following steps: the drive assembly comprises a drive shaft, the axial direction of the drive shaft is consistent with the height direction of the power supply body, a screw rod is installed at one end of the drive shaft, the axis of the screw rod is collinear with the axis of the screw rod, and a sliding block is meshed on the screw rod.

Further, the method comprises the following steps: the cleaning assembly comprises a cleaning rod, one end of the cleaning rod is connected with the sliding block, and the rod length direction of the cleaning rod is consistent with the width direction of the power supply body.

Further, the method comprises the following steps: a brush is arranged on one side surface of the cleaning rod close to the filter screen.

Further: the length of the brush on the cleaning rod is larger than the width of the filter screen.

Further: the passive subassembly includes the gag lever post, and the pole length direction of gag lever post is unanimous with the axial of screw rod, and spacing guide slot has been seted up to the inside of gag lever post, and the clearance pole runs through the gag lever post through spacing guide slot, and the clearance pole constitutes the slip guide cooperation with spacing guide slot, and the one end of clearance pole is rotated and is connected in the slider, and the rotation direction of clearance pole on the slider is unanimous with the rotation direction of screw rod.

Further: install torsion spring between slider and the clearance pole, slide and clearance pole are connected respectively at torsion spring's both ends, and torsion spring provides its circumferential elastic force for the clearance pole.

Further: the limiting guide groove consists of a plurality of ascending groove sections and descending groove sections which are connected end to end.

The beneficial effects of the utility model reside in that: in the use, accessible drive assembly orders about the clearance subassembly and removes, can realize the clearance to the filter screen surface, and simultaneously, passive subassembly can order about the in-process swing that the clearance subassembly moved at the level to pat the filter screen, the adnexed dust on the filter screen is got rid of with the mode of patting to the brush clearance.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic view of the internal structure of the housing of the present invention;

fig. 3 is a schematic structural view of the limiting guide groove of the present invention.

In the figure: 1. a power supply body; 11. a housing; 12. a filter screen; 13. a cavity; 2. a cleaning mechanism; 21. a drive assembly; 211. a drive shaft; 212. a screw; 213. a slider; 22. cleaning the assembly; 221. cleaning the rod; 222. a brush; 23. a passive component; 231. a limiting rod; 232. and limiting guide grooves.

Detailed Description

The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thereby implement the subject matter described herein, and are not intended to limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as necessary. In addition, features described with respect to some examples may also be combined in other examples.

Example one

As shown in fig. 1-3, a do not have partial discharge frequency conversion test power supply, including power source body 1, filter screen 12 and clearance mechanism 2, filter screen 12 is installed inside power source body 1, clearance mechanism 2 arranges inside power source body 1, clearance mechanism 2 includes drive assembly 21, clearance subassembly 22 and passive subassembly 23, drive assembly 21 is connected with clearance subassembly 22, drive assembly 21 is used for ordering about clearance subassembly 22 and removes along the length direction of filter screen 12, passive subassembly 23 cooperatees with clearance subassembly 22, passive subassembly 23 is used for ordering about clearance subassembly 22 and patts filter screen 12 at the removal in-process.

The shell 11 of the power supply body 1 is double-layer, a cavity 13 is formed in the middle, and the driving component 21, the cleaning component 22 and the passive component 23 are arranged inside the cavity 13.

The bottom of the cavity 13 is provided with an opening corresponding to the filter 12 for dust discharge.

The driving assembly 21 comprises a driving shaft 211, the axial direction of the driving shaft 211 is consistent with the height direction of the power supply body 1, a screw rod 212 is installed at one end of the driving shaft 211, the axial line of the screw rod 212 is collinear with the axial line of the screw rod 212, and a sliding block 213 is engaged on the screw rod 212.

The cleaning assembly 22 comprises a cleaning rod 221, one end of the cleaning rod 221 is connected with the sliding block 213, and the rod length direction of the cleaning rod 221 is consistent with the width direction of the power supply body 1.

A brush 222 is arranged on one side of the cleaning rod 221 close to the filter screen 12.

The length of the brush 222 on the cleaning bar 221 is greater than the width of the filter mesh 12.

The passive component 23 comprises a limiting rod 231, the rod length direction of the limiting rod 231 is consistent with the axial direction of the screw 212, a limiting guide groove 232 is formed in the limiting rod 231, the cleaning rod 221 penetrates through the limiting rod 231 through the limiting guide groove 232, the cleaning rod 221 and the limiting guide groove 232 form sliding guide fit, one end of the cleaning rod 221 is rotatably connected to the sliding block 213, and the rotating direction of the cleaning rod 221 on the sliding block 213 is consistent with the rotating direction of the screw 212.

A torsion spring is arranged between the sliding block 213 and the cleaning rod 221, two ends of the torsion spring are respectively connected with the sliding block 213 and the cleaning rod 221, and the torsion spring provides circumferential elastic force for the cleaning rod 221.

The limiting guide groove 232 is composed of a plurality of ascending groove sections and descending groove sections which are connected end to end.

When the frequency conversion experiment power supply of the utility model is used, when the power supply body 1 is in use, the inner fan sucks the air on the outer wall into the power supply body 1, the external air carries out heat exchange in the power supply body 1, and the hot air generated by the heat exchange is discharged from the heat dissipation holes;

when the fan sucks in external air, dust in the air is filtered through the filter screen 12, when the filter screen 12 needs to be cleaned, the screw rod 212 is driven by the driving shaft 211 to rotate, the slide block 213 is driven by the screw rod 212 to slide along the length direction of the screw rod, the slide block 213 drives the cleaning rod 221 to move, the brush 222 on the outer wall of the cleaning rod 221 is in contact with the filter screen 12, dust attached to the screen surface of the filter screen 12 is cleaned through the movement of the cleaning rod 221 and the brush 222, then, the cleaning rod 221 slides in the limiting guide groove 232 of the limiting rod 231 while being driven by the screw rod 212, as the limiting guide groove 232 consists of an ascending groove section and a descending groove section, when the limiting rod 231 moves from the descending groove section to the ascending groove section, the brush 222 on the cleaning rod 221 is separated from the contact with the filter screen 12, when the cleaning rod moves from the ascending groove section to the descending groove section again, the cleaning rod 221 is in contact with the filter screen 12 again, the filter screen 12 is flapped, dust falls off in a beating manner, the dust falls off from the filter screen 12 and the power supply 13 enters the cavity, and the dust can be prevented from falling into the fan body 1, and the dust can be cleaned in the dust falling from the bottom of the fan body in the dust cleaning process;

it should be added that the limiting guide groove 232 further includes a parallel groove section, when the cleaning rod 221 moves in the parallel groove section, the brush 222 contacts with the surface of the filter screen 12 and moves on the surface of the filter screen 12 along with the movement of the cleaning rod 221, so as to brush off the dust on the surface of the filter screen 12.

It should be added that, a guide rod is installed on one side of the screw 212, the guide rod penetrates through the slider 213, and the slider 213 is slidably connected to the guide rod, the rod length direction of the guide rod is consistent with the length direction of the screw 212, when the screw 212 rotates, the guide rod can drive the slider 213 to move horizontally under the rotation of the screw 212; the drive shaft 211 is driven by a driving device such as a motor or a rotary cylinder.

Secondly, when the brush 222 needs to be cleaned, the brush 222 can be moved to the bottom opening of the cavity 13 through the screw 212, and then the worker can use an external tool to stir the brush 222 on the cleaning rod 221 to brush off the dust in the brush 222.

It should be noted that, when the cleaning rod 221 passes over the filter screen 12, the corresponding limiting guide groove 232 is a parallel groove section, so that the cleaning rod 221 and the brush 222 can move to the opening of the cavity 13 smoothly.

The embodiments of the present invention have been described with reference to the drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention and the protection scope of the claims.

Claims

1. The utility model provides a frequency conversion test power is put in no office, a serial communication port, including power source body (1), filter screen (12) and clearance mechanism (2), install in power source body (1) filter screen (12), clearance mechanism (2) are arranged in power source body (1) inside, clearance mechanism (2) are including drive assembly (21), clearance subassembly (22) and passive subassembly (23), drive assembly (21) are connected with clearance subassembly (22), drive assembly (21) are used for ordering about the length direction removal of clearance subassembly (22) along filter screen (12), passive subassembly (23) cooperate with clearance subassembly (22), passive subassembly (23) are used for ordering about clearance subassembly (22) and pat filter screen (12) at the removal in-process.

2. The partial discharge-free variable frequency test power supply according to claim 1, wherein the housing (11) of the power supply body (1) is double-layered, a cavity (13) is formed in the middle, and the driving component (21), the cleaning component (22) and the passive component (23) are arranged inside the cavity (13).

3. The test power supply with no partial discharge and frequency conversion as claimed in claim 2, wherein the bottom of the cavity (13) is provided with an opening corresponding to the filter screen (12), and the opening is used for discharging dust.

4. The partial discharge-free variable frequency test power supply according to claim 1, wherein the driving assembly (21) comprises a driving shaft (211), the axial direction of the driving shaft (211) is consistent with the height direction of the power supply body (1), a screw rod (212) is installed at one end of the driving shaft (211), the axis of the screw rod (212) is collinear with the axis of the screw rod (212), and a sliding block (213) is engaged on the screw rod (212).

5. The partial discharge-free variable frequency test power supply according to claim 4, wherein the cleaning assembly (22) comprises a cleaning rod (221), one end of the cleaning rod (221) is connected with the sliding block (213), and the rod length direction of the cleaning rod (221) is consistent with the width direction of the power supply body (1).

6. The partial discharge-free variable frequency test power supply according to claim 5, wherein a brush (222) is arranged on one side surface of the cleaning rod (221) close to the filter screen (12).

7. The partial discharge-free variable frequency test power supply according to claim 6, wherein the length of the brush (222) on the cleaning rod (221) is greater than the width of the filter screen (12).

8. The partial discharge-free variable frequency test power supply according to claim 5, wherein the passive component (23) comprises a limiting rod (231), the rod length direction of the limiting rod (231) is consistent with the axial direction of the screw (212), a limiting guide groove (232) is formed in the limiting rod (231), the cleaning rod (221) penetrates through the limiting rod (231) through the limiting guide groove (232), the cleaning rod (221) and the limiting guide groove (232) form sliding guide fit, one end of the cleaning rod (221) is rotatably connected to the sliding block (213), and the rotating direction of the cleaning rod (221) on the sliding block (213) is consistent with the rotating direction of the screw (212).

9. The partial discharge-free variable frequency test power supply according to claim 5, wherein a torsion spring is installed between the sliding block (213) and the cleaning rod (221), two ends of the torsion spring are respectively connected with the sliding block (213) and the cleaning rod (221), and the torsion spring provides circumferential elastic force for the cleaning rod (221).

10. The non-partial discharge frequency conversion test power supply according to claim 8, wherein the limiting guide groove (232) is composed of a plurality of ascending groove sections and descending groove sections which are connected end to end.