CN211453729U - Direct current electric energy meter shell with ventilation and dust prevention functions - Google Patents
Direct current electric energy meter shell with ventilation and dust prevention functions Download PDFInfo
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- CN211453729U CN211453729U CN201921480711.8U CN201921480711U CN211453729U CN 211453729 U CN211453729 U CN 211453729U CN 201921480711 U CN201921480711 U CN 201921480711U CN 211453729 U CN211453729 U CN 211453729U
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Abstract
The utility model relates to an electric energy meter technical field just discloses a direct current electric energy meter casing with dustproof function ventilates, which comprises a housin body, all seted up the ventilation hole on the both sides inner wall of casing body, and equal fixed mounting has the mounting bracket on the both sides inner wall of casing body, the dust screen has been placed in the mounting bracket, and has all clamped the cardboard on the top inner wall of mounting bracket and the bottom inner wall, the cardboard contacts with the dust screen, the top fixed mounting of casing body has fixed cover, fixed mounting has the mount pad on the inner wall of fixed cover, be equipped with the installation cavity on the mount pad, and install on the top inner wall of cavity and the bottom inner wall equal fixed mounting have the check pipe. The utility model is simple in operation, through starting driving motor, can circulate this internal gas of casing to this can reach this internal radiating purpose of carrying out of casing, so can prevent effectively that the electric elements of electric energy meter body from damaging because of being heated excessively.
Description
Technical Field
The utility model relates to an electric energy meter technical field specifically is a direct current electric energy meter case with dustproof function ventilates.
Background
The direct current electric energy meter is designed for application occasions such as a direct current screen, solar power supply, a telecommunication base station, a subway and the like, and the series of meters can measure voltage, current, power, forward electric energy and reverse electric energy in a direct current system. The system can be used for local display, and can be connected with industrial control equipment and a computer to form a measurement and control system.
The existing direct current electric energy meter is internally provided with a corresponding ventilation mechanism, so that an overheating phenomenon of an electric element in the electric energy meter is easily caused in the time use process, and the electric element is easily damaged, so that a direct current electric energy meter shell with a ventilation and dust prevention function is provided for solving the problems.
Disclosure of Invention
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a direct current electric energy meter case with dustproof function ventilates possesses the ventilation of being convenient for, dispels the heat the grade merit, has solved electric elements and has appeared overheated, causes the problem of electric elements damage.
(II) technical scheme
For realizing the above-mentioned ventilation of being convenient for, carry out the heat dissipation purpose, the utility model provides a following technical scheme: the utility model provides a direct current electric energy meter casing with dustproof function ventilates, includes casing body, the ventilation hole has all been seted up on casing body's the both sides inner wall, and equal fixed mounting has a mounting bracket on casing body's the both sides inner wall, the dust screen has been placed in the mounting bracket, and all clamped the cardboard on the top inner wall of mounting bracket and the bottom inner wall, the cardboard contacts with the dust screen, casing body's top fixed mounting has the fixed cover, fixed mounting has the mount pad on the inner wall of fixed cover, be equipped with the installation cavity on the mount pad, and on the top inner wall of installation cavity and the bottom inner wall on equal fixed mounting have an one-way pipe, all seted up the through-hole on the top inner wall of fixed cover and the bottom inner wall, and the through-hole is linked together with the one-way pipe, the venthole has been seted up on.
Preferably, two cardboards are connected with two connecting rods in a symmetrical rotation mode on one side that is close to each other, and lie in and rotate with the one end that two connecting rods that are close to each other with one side and be connected with same mounting panel, and the equal fixed mounting in one side that two cardboards kept away from each other has the stopper, and two stoppers clamp with the top inner wall and the bottom of mounting bracket respectively, and the same limiting plate of one side sliding connection that two mounting panels are close to each other realizes that the cardboard clamps with the mounting bracket mutually.
Preferably, the spacing groove has all been seted up to the both sides of limiting plate, sliding connection has the gag lever post in the spacing groove, and the one end that two gag lever posts kept away from each other all extends to the outside of limiting plate and one side fixed connection who is close to each other with two mounting panels respectively, fixed mounting has spacing spring on one side inner wall of spacing groove, spacing spring's one end and the one end fixed connection of gag lever post utilize spacing spring to carry out elasticity spacing to two cardboards to this can realize carrying out elasticity to the dust screen and clamp, so when changing or wasing the dust screen, will be more convenient.
Preferably, one side fixed mounting of mount pad has the bellows, the one end fixed mounting of bellows has the backup pad, and the inner wall sliding connection of backup pad and fixed cover, the top fixed mounting of fixed cover has driving motor, and driving motor's output shaft extends to fixed cover in and fixed mounting has the dead lever, the bottom of dead lever and the bottom inner wall rotation of fixed cover are connected, and fixed cover is equipped with the dwang on the dead lever, one side movable contact of dwang and backup pad utilizes driving motor as source power to this can be convenient for carry out intermittent type and move to the backup pad.
Preferably, fixed mounting has the connecting pipe in the bellows, and the one end of connecting pipe extend to in the installation cavity and with the sealed fixed connection of one side inner wall of installation cavity, one side fixed mounting of backup pad has reset spring, one side fixed connection of reset spring's one end mount pad can recover the bellows position through reset spring.
Preferably, sealed fixed mounting has the sealing washer on the inner wall of one-way pipe, fixed mounting has the installation pole on the inner wall of one-way pipe, and the installation pole is located the below of sealing washer, sliding connection has the connecting rod on the installation pole, and the top fixed mounting of connecting rod has the ball template, the sealed laminating of ball template and sealing washer utilizes the ball template can realize one-way intercommunication to one-way pipe.
Preferably, the cover is equipped with compression spring on the connecting rod, and compression spring is located the below of installation pole, compression spring's top and bottom respectively with the bottom of installation pole and the bottom fixed connection of connecting rod to this can realize that ball template and sealing washer closely laminate.
(III) advantageous effects
Compared with the prior art, the utility model provides a direct current electric energy meter case with dustproof function ventilates possesses following beneficial effect:
1. according to the direct current electric energy meter shell with the ventilation and dust prevention functions, the two dust prevention nets are respectively placed in the two mounting frames through the two dust prevention nets, the two clamping plates and the parts connected with the clamping plates can be placed in the mounting frames, the two clamping plates can compress the dust prevention nets, then the two mounting plates are released, and the two limiting springs can drive the two clamping plates to be away from each other at the moment, so that the clamping plates and the mounting frames are clamped;
2. this a direct current electric energy meter casing with dustproof function ventilates, through starting driving motor, can drive the dwang and rotate, when the dwang rotates, dwang and backup pad movable contact can be realized, and under reset spring's effect, can realize the horizontal reciprocating motion to the backup pad, when reset spring atress compression, can outwards discharge bellows and installation cavity interior gas through the check pipe that is located the top, when compression spring recovers, can with this internal gas pumping of casing to installation cavity and bellows in, so to sum up two kinds of motions, can realize this internal gas circulation of casing, can effectually dispel the heat in the casing.
The utility model is simple in operation, through starting driving motor, can circulate this internal gas of casing to this can reach this internal radiating purpose of carrying out of casing, so can prevent effectively that the electric elements of electric energy meter body from damaging because of being heated excessively.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a side view of the structure of the position limiting plate of the present invention;
FIG. 3 is a front view of the fixing cover structure of the present invention;
FIG. 4 is a front view of the one-way tube structure of the present invention;
fig. 5 is an enlarged view of the structure a of the present invention.
In the figure: 1 casing body, 2 mounting brackets, 3 dust screens, 4 fixed cowls, 5 driving motor, 6 cardboard, 7 connecting rods, 8 mounting panels, 9 limiting plates, 10 spacing grooves, 11 gag lever posts, 12 spacing springs, 13 dwang, 14 mount pads, 15 check pipes, 16 connecting pipes, 17 bellows, 18 reset spring, 19 installation poles, 20 connecting rods, 21 spherical plates, 22 compression spring.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
Referring to fig. 1-5, a direct current electric energy meter housing with ventilation and dust-proof functions comprises a housing body 1, wherein the inner walls of the two sides of the housing body 1 are both provided with ventilation holes, and the inner walls of the two sides of the shell body 1 are both fixedly provided with a mounting rack 2, a dust screen 3 is arranged in the mounting rack 2, and the inner walls of the top and the bottom of the mounting rack 2 are respectively clamped with a clamping plate 6, the clamping plates 6 are contacted with the dustproof net 3, the top of the shell body 1 is fixedly provided with a fixed cover 4, the inner wall of the fixed cover 4 is fixedly provided with a mounting seat 14, the mounting seat 14 is provided with a mounting cavity, and the inner walls of the top and the bottom of the mounting chamber are both fixedly provided with one-way pipes 15, the inner walls of the top and the bottom of the fixed cover 4 are both provided with through holes, and the through hole is communicated with the one-way pipe 15, and the inner wall of the top of the shell body 1 is provided with an air outlet hole which is communicated with the through hole.
Further, two cardboard 6 equal symmetrical rotations in one side that is close to each other are connected with two connecting rods 7, and lie in the one end that two connecting rods 7 that are close to each other with one side and rotate and be connected with same mounting panel 8, and the equal fixed mounting in one side that two cardboard 6 kept away from each other has a stopper, and two stoppers clamp with the top inner wall and the bottom of mounting bracket 2 respectively, and the same limiting plate 9 of one side sliding connection that two mounting panels 8 are close to each other.
Further, limiting groove 10 has all been seted up to limiting plate 9's both sides, and sliding connection has gag lever post 11 in the gag lever post 10, and the one end that two gag lever posts 11 kept away from each other all extends to limiting plate 9's the outside and one side fixed connection who is close to each other respectively with two mounting panels 8, and fixed mounting has spacing spring 12 on one side inner wall of gag lever post 10, the one end of spacing spring 12 and the one end fixed connection of gag lever post 11.
Further, one side fixed mounting of mount pad 14 has bellows 17, the one end fixed mounting of bellows 17 has the backup pad, and backup pad and the inner wall sliding connection of fixed cover 4, the top fixed mounting of fixed cover 4 has driving motor 5, and driving motor 5's output shaft extends to fixed cover 4 in and fixed mounting has the dead lever, the bottom of dead lever is connected with the bottom inner wall rotation of fixed cover 4, and fixed cover is equipped with dwang 13 on the dead lever, dwang 13 and one side active contact of backup pad.
Further, a connecting pipe 16 is fixedly installed in the corrugated pipe 17, one end of the connecting pipe 16 extends into the installation cavity and is fixedly connected with the inner wall of one side of the installation cavity in a sealing manner, a return spring 18 is fixedly installed on one side of the supporting plate, and one end of the return spring 18 is fixedly connected with one side of the installation seat 14.
Further, a sealing ring is fixedly mounted on the inner wall of the one-way pipe 15 in a sealing mode, a mounting rod 19 is fixedly mounted on the inner wall of the one-way pipe 15, the mounting rod 19 is located below the sealing ring, a connecting rod 20 is connected to the mounting rod 19 in a sliding mode, a ball-shaped plate 21 is fixedly mounted at the top end of the connecting rod 20, and the ball-shaped plate 21 is attached to the sealing ring in a sealing mode.
Further, the connecting rod 20 is sleeved with a compression spring 22, the compression spring 22 is located below the mounting rod 19, and the top end and the bottom end of the compression spring 22 are respectively fixedly connected with the bottom of the mounting rod 19 and the bottom of the connecting rod 20.
Example two
Referring to fig. 1-5, a direct current electric energy meter casing with ventilation and dust prevention functions comprises a casing body 1, wherein ventilation holes are formed in the inner walls of the two sides of the casing body 1, mounting frames 2 are welded on the inner walls of the two sides of the casing body 1, dust nets 3 are placed in the mounting frames 2, clamping plates 6 are clamped on the inner walls of the top and the bottom of the mounting frames 2, the clamping plates 6 are in contact with the dust nets 3, a fixed cover 4 is welded on the top of the casing body 1, a mounting seat 14 is welded on the inner wall of the fixed cover 4, a mounting cavity is arranged on the mounting seat 14, one-way pipes 15 are welded on the inner walls of the top and the bottom of the mounting cavity, through holes are formed in the inner walls of the top and the bottom of the fixed cover 4 and communicated with the one-way pipes 15, air outlet holes are formed in the inner wall of the top of the, through the two dust screens 3, the two dust screens 3 are respectively arranged in the two mounting frames 2, at the moment, the two clamping plates 6 and the parts connected with the clamping plates 6 can be arranged in the mounting frames 2, the two clamping plates 6 can be tightly pressed against the dust screens 3, then the two mounting plates 8 are released, at the moment, the two limiting springs 12 can drive the two clamping plates 6 to be away from each other, the clamping plates 6 are clamped with the mounting frames 2, the rotating rod 13 can be driven to rotate by starting the driving motor 5, when the rotating rod 13 rotates, the rotating rod 13 can be movably contacted with the supporting plate, and under the action of the reset spring 18, the transverse reciprocating motion of the supporting plate can be realized, when the reset spring 18 is compressed by force, the bellows 17 and the gas in the mounting cavity can be discharged outwards through the one-way pipe 15 positioned above, when the compression spring 18 is restored, can with the gas pumping in the casing body 1 to installation cavity and bellows 17 in, so to sum up two kinds of movements, can realize the gas circulation in the casing body 1, can effectually dispel the heat in the casing body 1, the utility model is simple in operation, through starting driving motor 5, can circulate the gas in the casing body 1 to this can reach carries out radiating purpose in the casing body 1, so can prevent effectively that the electric elements of electric energy meter body from damaging because of being heated excessively.
Further, two cardboard 6 equal symmetrical rotations in one side that is close to each other are connected with two connecting rods 7, and lie in the one end that two connecting rods 7 that are close to each other with one side and rotate and be connected with same mounting panel 8, and the stopper has all been welded in one side that two cardboard 6 kept away from each other, and two stoppers clamp with the top inner wall and the bottom of mounting bracket 2 respectively, and the same limiting plate 9 of one side sliding connection that two mounting panels 8 are close to each other realizes that cardboard 6 clamps with mounting bracket 2 mutually.
Further, limiting groove 10 has all been seted up to limiting plate 9's both sides, sliding connection has gag lever post 11 in the gag lever post 10, the one end that two gag lever posts 11 kept away from each other all extends to limiting plate 9's the outside and welds with one side that two mounting panels 8 are close to each other respectively, the welding has spacing spring 12 on one side inner wall of gag lever post 10, the one end of spacing spring 12 welds with the one end of gag lever post 11 mutually, it is spacing to utilize spacing spring 12 to carry out elasticity to two cardboard 6, with this can realize carrying out elasticity to dust screen 3 and clamp, so when changing or wasing dust screen 3, will compare conveniently.
Further, bellows 17 has been bonded to one side of mount pad 14, bellows 17's one end bonds there is the backup pad, and backup pad and the inner wall sliding connection of fixed cover 4, there is driving motor 5 at the top of fixed cover 4 through bolt fixed mounting, and driving motor 5's output shaft extends to fixed cover 4 in and welds the dead lever, the bottom of dead lever is connected with the bottom inner wall rotation of fixed cover 4, and fixed cover is equipped with dwang 13 on the dead lever, dwang 13 and one side movable contact of backup pad, utilize driving motor 5 as source power, so as to be convenient for carry out intermittent type and move to the backup pad.
Furthermore, a connecting pipe 16 is bonded in the corrugated pipe 17, one end of the connecting pipe 16 extends into the installation cavity and is welded with the inner wall of one side of the installation cavity in a sealing manner, a return spring 18 is welded on one side of the supporting plate, one end of the return spring 18 is welded on one side of the installation seat 14, and the position of the corrugated pipe can be restored through the return spring 18.
Further, the sealing washer has been welded on the inner wall of one-way pipe 15 in a sealing manner, and the welding has installation pole 19 on the inner wall of one-way pipe 15, and installation pole 19 is located the below of sealing washer, and sliding connection has connecting rod 20 on installation pole 19, and the welding of the top of connecting rod 20 has ball template 21, and ball template 21 and the sealing washer are sealed to be laminated, utilize ball template 21 can realize one-way intercommunication to one-way pipe 15.
Further, the cover is equipped with compression spring 22 on connecting rod 20, and compression spring 22 is located the below of installation pole 19, and compression spring 22's top and bottom weld with the bottom of installation pole 19 and the bottom of connecting rod 20 respectively, and it is spacing to utilize compression spring 22 to carry out elasticity to spherical plate 21 to this can realize that spherical plate 21 and sealing washer closely laminate.
The working principle is as follows: the two dust screens 3 are respectively arranged in the two mounting frames 2, the two mounting plates 8 can be moved in opposite directions, so that the two connecting rods 7 can be driven to rotate, when the connecting rods 7 rotate, the two clamping plates 6 can be close to each other, and when the two mounting plates 8 are close to each other, the limiting springs 12 can be in a stressed state through the limiting rods 11, at the moment, the two clamping plates 6 and parts connected with the clamping plates 6 can be arranged in the mounting frames 2, the two clamping plates 6 can be used for compressing the dust screens 3, then the two mounting plates 8 are released, at the moment, the two limiting springs 12 can drive the two clamping plates 6 to be away from each other, so that the clamping plates 6 are clamped with the mounting frames 2, the driving motor 5 is started, the rotating rod 13 can be driven to rotate, when the rotating rod 13 rotates, the rotating rod 13 can be, and can realize the transverse reciprocating motion of the supporting plate under the action of the return spring 18, when the return spring 18 is compressed, the spherical plate 21 positioned above the return spring can move under the action of air pressure, the bellows 17 and the gas in the installation chamber can be discharged to the outside through the check pipe 15 located above, when the compression spring 18 is restored, the bellows 17 and the installation chamber are both in a negative pressure state, the lower spherical plate 21 is moved upward by the pressure, whereby the gas in the housing body 1 can be pumped into the installation chamber and the bellows 17, therefore, in conclusion of the two movements, the gas circulation in the shell body 1 can be realized, the heat dissipation in the shell body 1 can be effectively carried out, therefore, the purpose of radiating the inside of the shell body 1 can be achieved, and the electric elements of the electric energy meter body can be effectively prevented from being damaged due to excessive heating.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a direct current electric energy meter case with dustproof function ventilates, includes casing body (1), its characterized in that: the inner walls of two sides of the shell body (1) are respectively provided with a ventilation hole, the inner walls of two sides of the shell body (1) are respectively and fixedly provided with a mounting frame (2), a dust screen (3) is placed in the mounting frame (2), clamping plates (6) are respectively clamped on the inner wall of the top part and the inner wall of the bottom part of the mounting frame (2), the clamping plates (6) are contacted with the dust screen (3), the top part of the shell body (1) is fixedly provided with a fixed cover (4), the inner wall of the fixed cover (4) is fixedly provided with a mounting seat (14), the mounting seat (14) is provided with a mounting cavity, the inner wall of the top part and the inner wall of the bottom part of the mounting cavity are respectively and fixedly provided with a one-way pipe (15), the inner wall of the top part and the inner wall of the bottom part of the fixed cover (4) are respectively provided with a through hole, the through holes are, and the air outlet is communicated with the through hole.
2. The direct current electric energy meter shell with the ventilation and dust prevention functions as claimed in claim 1, wherein: the equal symmetry in one side that two cardboard (6) are close to each other rotates and is connected with two connecting rods (7), and lies in the one end that two connecting rods (7) that are close to each other with one side and rotate and be connected with same mounting panel (8), and the equal fixed mounting in one side that two cardboard (6) kept away from each other has the stopper, and two stoppers clamp with the top inner wall and the bottom of mounting bracket (2) respectively, and the same limiting plate (9) of one side sliding connection that two mounting panels (8) are close to each other.
3. The direct current electric energy meter shell with the ventilation and dust prevention functions as claimed in claim 2, wherein: spacing groove (10) have all been seted up to the both sides of limiting plate (9), sliding connection has gag lever post (11) in spacing groove (10), and the one end of keeping away from each other of two gag lever posts (11) all extends to the outside of limiting plate (9) and one side fixed connection who is close to each other with two mounting panels (8) respectively, fixed mounting has spacing spring (12) on the one side inner wall of spacing groove (10), the one end of spacing spring (12) and the one end fixed connection of gag lever post (11).
4. The direct current electric energy meter shell with the ventilation and dust prevention functions as claimed in claim 1, wherein: one side fixed mounting of mount pad (14) has bellows (17), the one end fixed mounting of bellows (17) has the backup pad, and the backup pad with fixed inner wall sliding connection who covers (4), the top fixed mounting of fixed cover (4) has driving motor (5), and the output shaft of driving motor (5) extends to fixed cover (4) in and fixed mounting have the dead lever, the bottom of dead lever and the bottom inner wall rotation of fixed cover (4) are connected, and fixed cover is equipped with dwang (13) on the dead lever, dwang (13) and one side movable contact of backup pad.
5. The direct current electric energy meter shell with the ventilation and dust prevention functions as claimed in claim 4, wherein: bellows (17) internal fixation installs connecting pipe (16), and the one end of connecting pipe (16) extend to in the installation cavity and with the sealed fixed connection of one side inner wall of installation cavity, one side fixed mounting of backup pad has reset spring (18), one side fixed connection of one end mount pad (14) of reset spring (18).
6. The direct current electric energy meter shell with the ventilation and dust prevention functions as claimed in claim 1, wherein: sealed fixed mounting has the sealing washer on the inner wall of one-way pipe (15), fixed mounting has installation pole (19) on the inner wall of one-way pipe (15), and installs the below that pole (19) are located the sealing washer, sliding connection has connecting rod (20) on installation pole (19), and the top fixed mounting of connecting rod (20) has ball template (21), ball template (21) and the sealed laminating of sealing washer.
7. The direct current electric energy meter shell with the ventilation and dust prevention functions as claimed in claim 6, wherein: the cover is equipped with compression spring (22) on connecting rod (20), and compression spring (22) are located the below of installation pole (19), the top and the bottom of compression spring (22) respectively with the bottom of installation pole (19) and the bottom fixed connection of connecting rod (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480711.8U CN211453729U (en) | 2019-09-06 | 2019-09-06 | Direct current electric energy meter shell with ventilation and dust prevention functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921480711.8U CN211453729U (en) | 2019-09-06 | 2019-09-06 | Direct current electric energy meter shell with ventilation and dust prevention functions |
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| Publication Number | Publication Date |
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| CN211453729U true CN211453729U (en) | 2020-09-08 |
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|---|---|---|---|
| CN201921480711.8U Active CN211453729U (en) | 2019-09-06 | 2019-09-06 | Direct current electric energy meter shell with ventilation and dust prevention functions |
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| CN (1) | CN211453729U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234477A (en) * | 2020-09-14 | 2021-01-15 | 毛成成 | Electric power cabinet convenient to wire and use method thereof |
| CN112820540A (en) * | 2021-01-06 | 2021-05-18 | 广州金立电子有限公司 | Capacitor protection device and use method thereof |
| CN113189382A (en) * | 2021-04-30 | 2021-07-30 | 国家电网有限公司 | Electric energy meter capable of automatically reporting power failure |
-
2019
- 2019-09-06 CN CN201921480711.8U patent/CN211453729U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234477A (en) * | 2020-09-14 | 2021-01-15 | 毛成成 | Electric power cabinet convenient to wire and use method thereof |
| CN112820540A (en) * | 2021-01-06 | 2021-05-18 | 广州金立电子有限公司 | Capacitor protection device and use method thereof |
| CN113189382A (en) * | 2021-04-30 | 2021-07-30 | 国家电网有限公司 | Electric energy meter capable of automatically reporting power failure |
| CN113189382B (en) * | 2021-04-30 | 2022-10-21 | 国家电网有限公司 | Electric energy meter capable of automatically reporting power failure |
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