CN216646559U

CN216646559U - Harmonic current and voltage flicker measuring instrument for electronic product

Info

Publication number: CN216646559U
Application number: CN202122772081.5U
Authority: CN
Inventors: 汪鹏; 李辉
Original assignee: Guangdong Zhonghan Testing Technology Co ltd
Current assignee: Guangdong Zhonghan Testing Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-05-31
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses a harmonic current and voltage flicker measuring instrument for electronic products, which comprises a measuring instrument, wherein a box body is arranged outside the measuring instrument, a box cover is arranged above the box body, arc-shaped grooves are arranged below two sides of the measuring instrument, a ventilating plate is arranged below the measuring instrument, spring grooves are arranged inside the two sides of the air permeable plate, springs are arranged inside the two spring grooves, a circular clamping block is arranged on one side of each spring, the circular fixture block is clamped in the arc-shaped groove, a first filter screen is fixedly arranged below the air permeable plate, a third filter screen is arranged below the first filter screen, a drying filling layer is arranged between the third filter screen and the first filter screen, the inside of box below is equipped with the heat dissipation fan, the below of heat dissipation fan is equipped with second fan motor, be connected with first pivot between second fan motor and the heat dissipation fan. The utility model enhances the internal heat dissipation and prolongs the service life by an efficient heat dissipation method.

Description

Harmonic current and voltage flicker measuring instrument for electronic product

Technical Field

The utility model relates to the technical field of measuring instruments, in particular to a harmonic current and voltage flicker measuring instrument for an electronic product.

Background

With the rapid development of social economy, a harmonic current voltage fluctuation and flicker test system is based on the standards IEC61000-3-2/GB T17625.1 and IEC61000-3-3/GB T17625.2, and as a large amount of switching power supplies are used in electronic products, the power supply efficiency is improved, and simultaneously, due to nonlinear electric energy conversion, a large amount of harmonic current is injected into a power grid, so that the harmonic current not only can interfere with other equipment in the same power grid, but also can overload the neutral current of the power grid, and the power transmission capacity is influenced.

However, the existing measuring instrument dissipates heat through the air holes or the exhaust fan, so that the heat dissipation efficiency is low, and the measuring instruments are placed in the box body to form a whole body, so that the measuring instrument is not easy to disassemble and maintain; therefore, the existing requirements are not met, and the harmonic current and voltage flicker measuring instrument of the electronic product is provided for the requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a harmonic current and voltage flicker measuring instrument for an electronic product, which aims to solve the problems that the existing measuring instrument in the background art is low in heat dissipation efficiency due to the fact that heat is dissipated through air holes or an exhaust fan, and the measuring instruments are placed in a box body to form a whole, are not easy to disassemble and maintain and the like.

In order to achieve the purpose, the utility model provides the following technical scheme: an electronic product harmonic current and voltage flicker measuring instrument comprises a measuring instrument, wherein a box body is arranged outside the measuring instrument, a box cover is arranged above the box body, arc-shaped grooves are formed below two sides of the measuring instrument, a ventilating plate is arranged below the measuring instrument, spring grooves are formed inside two sides of the ventilating plate, springs are arranged inside two spring grooves, circular fixture blocks are arranged on one sides of the two springs, the circular fixture blocks are clamped into the arc-shaped grooves, a first filter screen is fixedly arranged below the ventilating plate, a third filter screen is arranged below the first filter screen, a dry filling layer is arranged between the third filter screen and the first filter screen, a heat dissipation fan is arranged inside the lower portion of the box body, a second fan motor is arranged below the heat dissipation fan, a first rotating shaft is connected between the second fan motor and the heat dissipation fan, and suction fans are arranged inside two sides of the box body, and one side of each of the two exhaust fans is provided with a first fan motor, and a second rotating shaft is connected between the first fan motor and the exhaust fan.

Preferably, the surface of the box body is provided with a hasp, and the box body and the box cover are fixed through the hasp, so that the internal measuring instrument is further protected.

Preferably, a lifting handle is arranged above the box cover, so that the box cover is convenient to lift and transport.

Preferably, four end feet of box below are all fixed and are equipped with the supporting pad, the surface of supporting pad below is equipped with the rubber cushion, plays the effect of support and the effect that the rubber cushion also can play the buffering.

Preferably, the surface of the air permeable plate is provided with a plurality of circular air holes, so that the air permeable effect is enhanced.

Preferably, the top of heat dissipation fan is equipped with the second filter screen that is located box inside below surface, strengthens filterable effect.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model reaches the radiating effect by the operation of the radiating fan at the lower part in the box body, when the radiating fan incites, the wind is firstly upwards transmitted through the second filter screen until reaching the third filter screen, and then is upwards transmitted to the dry filling layer, the heat is absorbed and the damp absorption effect is carried out on the interior of the box body, the wind is blown out through the first filter screen, the wind is upwards transmitted through the ventilating plate, the radiating effect is carried out on the measuring instrument, and finally the suction fans at the two sides operate together to suck out the wind blown out by the radiating fan, thereby forming a wind cycle;

2. according to the utility model, the measuring instrument can be pulled upwards, so that the circular fixture block rolls in the arc-shaped groove to be separated from the arc-shaped groove, the measuring instrument can be taken out from the box body by continuously pulling the measuring instrument upwards, the measuring instrument only needs to be put into the box body during installation, the circular fixture block can roll on the surface of the measuring instrument and is pressed towards one side by the spring due to the smooth and rollable surface when the measuring instrument is put into the box body, and when the measuring instrument touches the arc-shaped grooves on two sides of the measuring instrument, the spring pops up to clamp the circular fixture block into the arc-shaped groove for fixing.

Drawings

FIG. 1 is an overall front view of the present invention;

FIG. 2 is a schematic view of the internal structure of the whole body of the present invention;

FIG. 3 is a schematic view of the present invention at a location A, partially enlarged;

fig. 4 is a partially enlarged structural view of the whole B of the present invention.

In the figure: 1. a box body; 2. a box cover; 3. a support pad; 4. a hasp; 5. a handle; 6. a measuring instrument; 7. a sponge cushion; 8. an exhaust fan; 9. a first fan motor; 10. a gas permeable plate; 11. a first filter screen; 12. a second filter screen; 13. a heat dissipation fan; 14. a first rotating shaft; 15. a second fan motor; 16. an arc-shaped slot; 17. a circular fixture block; 18. a spring slot; 19. a spring; 20. a second rotating shaft; 21. drying the filling layer; 22. and a third filter screen.

Detailed Description

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

The first fan motor 9 (model number ABK-40), the suction fan 8 (model number QMF-200F), the second fan motor 15 (model number TD-18) and the heat dissipation fan 13 (model number YY12038HSL2) mentioned in the present invention are commercially available or custom made.

Referring to fig. 1 to 4, an embodiment of the present invention is shown: an electronic product harmonic current and voltage flicker measuring instrument comprises a measuring instrument 6, a box body 1 is arranged outside the measuring instrument 6, a box cover 2 is arranged above the box body 1, arc-shaped grooves 16 are arranged below two sides of the measuring instrument 6, a ventilating plate 10 is arranged below the measuring instrument 6, spring grooves 18 are arranged inside two sides of the ventilating plate 10, springs 19 are arranged inside two spring grooves 18, circular clamping blocks 17 are arranged on one sides of the two springs 19, the circular clamping blocks 17 are clamped in the arc-shaped grooves 16, a first filter screen 11 is fixedly arranged below the ventilating plate 10, a third filter screen 22 is arranged below the first filter screen 11, a dry filling layer 21 is arranged between the third filter screen 22 and the first filter screen 11, a heat radiation fan 13 is arranged inside the lower part of the box body 1, a second fan motor 15 is arranged below the heat radiation fan 13, a first rotating shaft 14 is connected between the second fan motor 15 and the heat radiation fan 13, and suction fans 8 are arranged inside two sides of the box body 1, one side of each of the two suction fans 8 is provided with a first fan motor 9, and a second rotating shaft 20 is connected between the first fan motor 9 and the suction fan 8.

Furthermore, the surface of the box body 1 is provided with a hasp 4, and the box body 1 and the box cover 2 are fixed through the hasp 4, so that the inner measuring instrument 6 is protected.

Further, the handle 5 is arranged above the box cover 2, so that the box cover is convenient to carry and transport.

Further, four end feet of box 1 below are all fixed and are equipped with supporting pad 3, and the surface of supporting pad 3 below is equipped with the rubber cushion, plays the effect of support and the effect that the rubber cushion also can play the buffering.

Further, a plurality of circular air holes are formed in the surface of the air permeable plate 10, so that the air permeable effect is enhanced.

Further, a second filter screen 12 is arranged on the surface of the lower part inside the box body 1 above the heat dissipation fan 13, so that the filtering effect is enhanced.

The working principle is as follows: when in use, the measuring instrument 6 can be stirred upwards, so that the circular fixture block 17 rolls in the arc-shaped groove 16 to be separated from the arc-shaped groove 16, the measuring instrument 6 can be taken out from the box body 1 by continuously pulling the measuring instrument 6 upwards, the measuring instrument 6 is only needed to be put into the box body 1 during installation, the circular fixture block 17 can roll on the surface of the measuring instrument 6 due to the smooth surface and can be pressed to one side by the spring 19 during putting in, when the arc-shaped groove 16 at the two sides of the measuring instrument 6 is met, the spring 19 pops up to clamp the circular fixture block 17 into the arc-shaped groove 16 for fixing, the operation of the heat dissipation fan 13 passing through the lower part in the box body 1 carries out flaring on the wind inside, the heat dissipation effect is achieved, when the heat dissipation fan 13 flares, the wind is firstly transmitted upwards through the second filter screen 12 until reaching the third filter screen 22 and then transmitted upwards to the dry filling layer 21, the heat absorption and the wet absorption effect on the interior of the box body 1 are achieved, air is blown out through the first filter screen 11, the air is upwards transmitted through the ventilation plate 10, a heat dissipation effect is achieved on the measuring instrument 6, and finally the air suction fans 8 on the two sides operate together to suck out the air blown out by the heat dissipation fan 13, and an air circulation is formed.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an electronic product harmonic current voltage scintillation measuring apparatu, includes measuring apparatu (6), its characterized in that: the measuring instrument is characterized in that a box body (1) is arranged outside the measuring instrument (6), a box cover (2) is arranged above the box body (1), arc-shaped grooves (16) are arranged below two sides of the measuring instrument (6), a ventilating plate (10) is arranged below the measuring instrument (6), spring grooves (18) are arranged inside two sides of the ventilating plate (10), springs (19) are arranged inside the two spring grooves (18), circular clamping blocks (17) are arranged on one sides of the two springs (19), the circular clamping blocks (17) are clamped into the arc-shaped grooves (16), a first filter screen (11) is fixedly arranged below the ventilating plate (10), a third filter screen (22) is arranged below the first filter screen (11), a drying filling layer (21) is arranged between the third filter screen (22) and the first filter screen (11), and a heat dissipation fan (13) is arranged inside the lower portion of the box body (1), the heat dissipation fan (13) is provided with a second fan motor (15) below, a first rotating shaft (14) is connected between the second fan motor (15) and the heat dissipation fan (13), the inside of two sides of the box body (1) is provided with an exhaust fan (8) and two, one side of the exhaust fan (8) is provided with a first fan motor (9), and a second rotating shaft (20) is connected between the first fan motor (9) and the exhaust fan (8).

2. The harmonic current and voltage flicker measuring instrument of claim 1, wherein: the surface of the box body (1) is provided with a hasp (4), and the box body (1) is fixed with the box cover (2) through the hasp (4).

3. The harmonic current and voltage flicker measuring instrument of claim 1, wherein: a handle (5) is arranged above the box cover (2).

4. The harmonic current and voltage flicker measuring instrument of claim 1, wherein: four end feet below the box body (1) are all fixedly provided with supporting pads (3), and the outer surface below the supporting pads (3) is provided with rubber cushions.

5. The harmonic current and voltage flicker measuring instrument of claim 1, wherein: the surface of the ventilation plate (10) is provided with a plurality of circular ventilation holes.

6. The harmonic current and voltage flicker measuring instrument of claim 1, wherein: and a second filter screen (12) positioned on the surface of the lower part inside the box body (1) is arranged above the heat dissipation fan (13).