CN218417071U - Relay protection device - Google Patents
Relay protection device Download PDFInfo
- Publication number
- CN218417071U CN218417071U CN202221957909.2U CN202221957909U CN218417071U CN 218417071 U CN218417071 U CN 218417071U CN 202221957909 U CN202221957909 U CN 202221957909U CN 218417071 U CN218417071 U CN 218417071U
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- Prior art keywords
- brush
- protection device
- relay protection
- shell
- bristle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004140 cleaning Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000001012 protector Effects 0.000 claims abstract description 8
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 210000004209 hair Anatomy 0.000 claims description 54
- 230000017525 heat dissipation Effects 0.000 claims description 19
- 229920000742 Cotton Polymers 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002045 lasting effect Effects 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a relay protection device, it includes: the bottom of the shell is provided with a vent, and a filter screen is arranged in the vent; a heat radiation fan is arranged inside the shell; a relay protector provided inside the housing; the cleaning mechanism comprises a bristle holder and a brush, wherein the bristle holder is in sliding connection with the shell, and the brush is detachably connected with the bristle holder. The utility model discloses the brush that is used for clearing up the dust screen on can solving relay protection device does not have detachability, can't guarantee the lasting clearance effect of brush to the dust screen.
Description
Technical Field
The utility model relates to a relay protection device. More specifically, the utility model relates to a relay protection device with good dustproof heat dispersion.
Background
The power system needs to be provided with a relay protector to monitor faults or other abnormal conditions, an alarm signal is sent out to prompt people when the abnormal conditions occur, and the relay protector can isolate the fault part while sending out the alarm signal so as to avoid the occurrence of power system accidents.
The operation time limit of the relay protection device is generally about 10 years, continuous operation is performed, heat inside the relay protection device is gathered, the temperature inside the relay protection device is overheated, and further equipment is burnt or aged, in order to solve the problem of heat dissipation inside the relay protection device, a heat dissipation fan is usually arranged inside the relay protection device, and the heat inside the relay protection device is dissipated through cooperation of heat dissipation holes in a shell of the relay protection device.
However, dust in the air can enter the interior of the relay protection device through the heat dissipation holes, the entering of the dust can affect the service life of equipment, namely, the improvement of the above technology brings new technical problems while solving the heat dissipation problem of the relay protection device, the application number is 2019211524314, a ventilation groove is formed in a shell of a relay in a patent named as a relay heat dissipation structure, a dust screen is arranged in the ventilation groove, further, a brush capable of cleaning the dust screen is fixedly arranged, the brush in the patent is fixedly arranged, the dust screen is cut off for a long time, so that the brush can be adhered with a large amount of dirt such as wool, and the cleaning effect of the brush on the dust screen can be affected if the dirt is not cleaned in time.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model discloses still another purpose provides a training set of relay protection specialty, and it can solve the last brush that is used for clearing up the dust screen of relay protection device and does not have detachability, can't guarantee the brush to the lasting clearance effect of dust screen, and then leads to the not high technical problem of heat dissipation dustproof establishment practicality.
To achieve these objects and other advantages in accordance with the present invention, there is provided a relay protection device including:
the bottom of the shell is provided with a vent, and a filter screen is arranged in the vent; a heat radiation fan is arranged inside the shell;
a relay protector provided inside the housing;
the cleaning mechanism is arranged on the outer side of the filter screen and comprises a bristle frame and a brush, wherein the bristle frame is connected with the shell in a sliding mode, and the brush is detachably connected with the bristle frame.
Preferably, in the relay protection device, the bristle holder is a strip-shaped structure with a hollow interior and an open end, one end of the bristle holder is provided with a cover body which can be opened and closed, and one side of the bristle holder is provided with a first chute communicated with the hollow interior of the bristle holder;
the brush comprises a strip-shaped slide rail, a brush hair plate, a connecting plate and a plurality of clusters of brush hair, wherein the strip-shaped slide rail is connected with the inside of the brush hair rack in a sliding manner; the connecting plate is smaller than the first sliding chute in size and can slide in the first sliding chute.
Preferably, the relay protection device, the brush hair board is equipped with a plurality of brush hair fixed orifices, a bunch of brush hair sets firmly in every brush hair fixed orifice, the brush hair board upper berth is equipped with the dust absorption cotton, is equipped with a plurality of through-holes that supply a plurality of bunches of brush hairs to pass on the dust absorption cotton.
Preferably, the relay protection device, be equipped with the louvre on the lateral wall of casing.
Preferably, in the relay protection device, two sliders are arranged on the bristle plate at intervals, and one side of each slider is horizontally connected with the housing in a sliding manner;
the relay protection device further comprises a driving mechanism which comprises:
the motor is fixedly arranged on the shell;
the two screw rods are horizontally arranged at intervals, each screw rod is vertical to the bristle holder, and two ends of each screw rod are respectively and rotatably connected with the side wall of the shell; the two sliding blocks are respectively sleeved on the two screw rods in a threaded rotating manner; one end of each screw is linked through a transmission belt, and one end of one screw is connected with an output shaft of the motor.
Preferably, the relay protection device is provided with two pairs of terminals, wherein one pair of terminals is connected with the load power interface through a first wire respectively, and the other pair of terminals is connected with the coil power interface through a second wire respectively.
Preferably, the casing of the relay protection device is provided with a first through hole for two load power interfaces to pass through and a second through hole for two coil power interfaces to pass through.
The utility model discloses at least, include following beneficial effect:
the utility model discloses a set up the filter screen in the vent, still can play dirt-proof effect when guaranteeing the inside heat dissipation of casing, further set up a clean mechanism in the outside of filter screen, every clean mechanism can clear up the filter screen, guarantees the permeability of filter screen mesh, and then guarantees good heat dispersion; the brush hair frame and the brush hair of the cleaning mechanism are detachably connected, the brush hair can be taken down from the brush hair frame, the brush hair is cleaned periodically, and the good cleaning effect of the cleaning mechanism on the filter screen is guaranteed.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of the relay protection device according to an embodiment of the present invention;
FIG. 2 is a bottom view of FIG. 1;
fig. 3 is a schematic structural view of a cleaning mechanism according to another embodiment of the present invention.
Description of reference numerals: 1-a shell; 11-a heat dissipation fan; 12-a fixation rod; 2, filtering a screen; 3-a relay protector; 31-a terminal post; 32-load power supply interface; 33-coil power interface; 41-bristle holder; 42-a brush; 421-a slide rail; 422-bristle plate; 423-connecting plate; 424-bristles; 425-dust-collecting cotton; 43-a slide block; 51-a motor; 52-a screw; 53-drive belt.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1 to 3, the utility model provides a relay protection device, it includes:
the bottom of the shell 1 is provided with a vent, and a filter screen 2 is arranged in the vent; a heat radiation fan 11 is arranged inside the shell 1;
a relay protector 3 provided inside the housing 1;
the cleaning mechanism is arranged on the outer side of the filter screen 2 and comprises a bristle holder 41 and a brush 42, wherein the bristle holder 41 is connected with the shell 1 in a sliding mode, and the brush 42 is detachably connected with the bristle holder 41.
In the above technical solution, the utility model discloses a heat dissipation and dustproof relay protection device capable of cleaning a filter screen 2, which specifically comprises a shell 1, wherein a relay protector 3 is encapsulated inside the shell 1, a vent is arranged at the bottom of the shell 1, the dustproof filter screen 2 is arranged in the vent, a cooling fan is arranged inside the shell 1, preferably, the cooling fan is arranged on the inner wall of the top surface of the shell, a cleaning mechanism is arranged outside the filter screen 2, the cleaning mechanism can clean the filter screen 2, the cleaning mechanism comprises a brush hair frame 41 connected with the shell 1 in a sliding manner and a brush hair 42 detachably connected with the brush hair frame 41, and the brush hair 42 is in contact with the outer side of the filter screen 2; the brush hair holder 41 is connected with the shell 1 in a sliding mode, the brush hair holder 41 can slide horizontally relative to the filter screen 2, then the brush hair 42 can be driven to clean all meshes of the filter screen 2, the brush hair 42 can be detachably connected with the brush hair holder 41, the brush hair 42 can be taken down from the brush hair holder 41, and the brush hair 42 is cleaned regularly.
When the relay protection device is used, the heat dissipation fan can be started regularly, air inside the shell 1 is stirred, hot air inside the shell 1 is exhausted through the ventilation opening, heat dissipation of the relay protection device 3 is achieved, the heat dissipation fan is arranged on the inner wall of the top face of the shell, and the ventilation opening is arranged at the bottom of the shell, so that air exhaust and heat dissipation inside the shell are facilitated; when heat is dissipated, the filter screen 2 is used for filtering outside air, so that a good dustproof effect can be achieved; after a period of time, when sundries such as floatage and the like adhere to the outer side of the filter screen 2, the filter screen 2 can be cleaned by arranging a cleaning mechanism on the outer side of the filter screen 2, the brush bristle frame 41 horizontally slides relative to the shell 1 to drive the brush 42 to move back and forth relative to the filter screen 2, the outer side of the filter screen 2 can be scraped in the moving process of the brush 42, and then the sundries adhering to the outer side of the filter screen 2 can be cleaned, so that the permeability of meshes of the filter screen 2 is ensured, and further good heat dissipation performance of the relay protection device is ensured; the brush 42 and the bristle holder 41 can be detachably connected, the brush 42 can be periodically detached to clean the brush 42 or replace the brush 42 when the brush 42 is damaged, the cleaning effect of the cleaning mechanism on the filter screen 2 is improved, the beneficial effect of ensuring good heat dissipation performance of the relay protection device is further achieved, and meanwhile the service life of the cleaning mechanism can be prolonged.
As shown in fig. 3, in another technical solution of the relay protection device, the bristle holder 41 is a strip-shaped structure with a hollow interior and an open end, one end of the bristle holder 41 is provided with an openable cover, and one side of the bristle holder 41 is provided with a first chute communicated with the hollow interior;
the brush 42 comprises a strip-shaped slide rail 421 connected with the interior of the bristle holder 41 in a sliding manner, a bristle plate 422, a connecting plate 423 for connecting the bristle plate 422 with the slide rail 421, and a plurality of tufts of bristles 424 arranged on the bristle plate 422; the connecting plate 423 has a size smaller than that of the first slide groove and is slidable in the first slide groove.
In the above technical solution, a specific structure of the detachable connection between the bristle holder 41 and the brush 42 is disclosed, the bristle holder 41, the sliding rail 421, the bristle plate 422 and the connecting plate 423 are all parallel strip structures, the interior of the bristle holder 41 is hollow and used for accommodating the strip sliding rail 421, and an openable cover is arranged at an open end, the length of the sliding rail 421 is smaller than the length of the bristle holder 41 (also smaller than the length of the hollow interior), so that the sliding rail 421 can be packaged in the interior of the bristle holder 41, the strip sliding rail 421 can be limited in the interior of the bristle holder 41 by closing the cover, in practical application, a fixture block can be arranged at the end of the sliding rail 421, a clamping groove matched with the fixture block is arranged on the cover, after the sliding rail 421 slides to the interior of the bristle holder 41, the cover is closed, the fixture block is clamped in the clamping groove in a matching manner, so as to position the sliding rail 421, and avoid the cleaning effect of the filter screen 2 from being affected by the sliding rail 421 swinging relative to the bristle holder 41; bar-shaped slide rail 421 passes through connecting plate 423 with brush hair board 422 to be connected, and connecting plate 423 slides along first spout, sets up connecting plate 423 and realizes brush hair board 422, brush hair 424 and the removable connection of brush hair frame 41.
Inserting the strip-shaped sliding rail 421 into the inside of the bristle holder 41 from one end (open end) of the bristle holder 41 along the length direction of the bristle holder 41, wherein the connecting plate 423 corresponds to the first sliding groove, the connecting plate 423 slides along the first sliding groove, while ensuring that the sliding rail 421 is connected with the bristle plate 422, the bristle plate 422 does not affect the insertion of the sliding rail 421 into the inside of the bristle holder 41, and after the sliding rail 421 completely slides into the inside of the bristle holder 41, closing the cover body, sealing and fixing the sliding rail 421 in the inside of the bristle holder 41, and completing the connection between the brush 42 and the bristle holder 41; when the brush is detached, the cover body is opened, the sliding rail 421 is pulled out from the inside of the bristle holder 41 (specifically, a clamping block at the end of the sliding rail 421 can be pulled), the brush 42 is detached from the bristle holder 41, the bristles 424 can be cleaned, and after the cleaning is completed, the brush 42 is connected with the bristle holder 41 again according to the assembling steps.
In another technical scheme, in the relay protection device, a plurality of bristle fixing holes are formed in the bristle plate 422, a cluster of bristles 424 is fixedly arranged in each bristle fixing hole, dust-absorbing cotton 425 is laid on the bristle plate 422, and a plurality of through holes for the plurality of clusters of bristles 424 to pass through are formed in the dust-absorbing cotton 425.
In the technical scheme, the utility model discloses lay dust absorption cotton 425 between brush hair board 422 and brush hair 424 free end, can in time adsorb the dust that brush hair 424 scraped the production of filter screen 2, reduce the dust volume of going up four times at the in-process raise dust that carries out cleanness to filter screen 2, reduce the influence to air pollution, it is specific to set up a plurality of brush hair fixed orificess on brush hair board 422, every cluster of brush hair 424 corresponds and sets up a brush hair fixed orifices, lay one deck dust absorption cotton 425 at first on brush hair board 422, be equipped with the through-hole that supplies many clusters of brush hair 424 to pass on the dust absorption cotton 425, dust absorption cotton 425 can adopt the viscose to bond with being connected of brush hair board 422, then pass corresponding through-hole and get into brush hair fixed orifices with every cluster of brush hair 424, adopt the prior art means to be connected with brush hair 424 and brush hair fixed orifices at last, the preparation of brush hair board 422 has been accomplished promptly.
In another technical scheme, the relay protection device is provided with heat dissipation holes on the side wall of the shell 1. Set up the louvre on the lateral wall of casing for the inside thermal discharge of casing, and then improve the radiating effect greatly.
In another technical solution, in the relay protection device, two sliders 43 are arranged on the bristle plate 422 at intervals along the length direction thereof; one side of each sliding block 43 is horizontally connected with the shell 1 in a sliding way;
the relay protection device further includes a drive mechanism including:
the motor 51 is fixedly arranged on the shell 1;
two screw rods 52 which are horizontally arranged at intervals, wherein each screw rod 52 is vertical to the bristle holder 41, and two ends of each screw rod 52 are respectively and rotationally connected with the side wall of the shell 1; the two sliding blocks 43 are respectively sleeved on the two screw rods 52 in a threaded rotation manner; one ends of the two screws 52 are linked by a transmission belt 53, and one end of one screw 52 is connected to an output shaft of the motor 51.
In the above technical solution, the two sliding blocks 43 arranged on the bristle plate 422 of the present invention are connected to the driving mechanism, so as to realize the sliding connection between the bristle plate 422 and the housing 1; the two sliding blocks 43 are arranged to improve the sliding stability of the brush hair plate 422, the motor 51 (the servo motor 51) is used as a power source to drive the screw rod 52 to rotate, so that the sliding blocks 43 are driven to horizontally move, the brush hair plate 422 is driven to horizontally move relative to the filter screen 2, the cleaning of the filter screen 2 is finally realized, the permeability of meshes of the filter screen 2 is ensured, and further the relay protection device has a dustproof function while having a heat dissipation function;
in the utility model, two sliders 43 are arranged on one side surface of the bristle plate 422 far from the brush 42 along the length direction of the bristle plate 422 (the length direction of the shell 1, such as the direction vertical to the screen in fig. 1, and the up-and-down direction in fig. 2), a threaded hole is horizontally arranged in the middle of any slider 43 (the axis of the threaded hole is vertical to the length direction of the bristle plate 422, and an inner thread matched with the thread on the screw rod 52 is arranged on the inner wall of the threaded hole); a driving mechanism is respectively arranged at the bottom of the shell 1 to drive the cleaning mechanism to move, as shown in fig. 1-2; the driving mechanism comprises a motor 51 and a screw 52, and in the process of cleaning the filter screen 2, the rotation of the motor 51 is the forward and reverse rotation of the circular reciprocating, so as to drive the cleaning mechanism to move back and forth left and right relative to the filter screen 2 in a reciprocating manner, and further efficiently clean the filter screen 2; two screw rods 52 set up along the length direction interval of casing 1 (with screen vertically direction in fig. 1), every screw rod 52 sets up with brush hair board 422 is perpendicular (the screw rod extends along the direction parallel with the screen in fig. 1, brush hair board extends along the direction perpendicular with the screen), the both ends of screw rod 52 rotate with the lateral wall of casing 1 respectively and are connected, two sliders 43 on brush hair board 422 are respectively the screw thread and rotate the cover and locate two screw rods 52, the screw rod passes the screw hole of every slider 43, and screw-thread fit rotates the connection, make screw rod 52 can drive slider 43 horizontal slip around the rotation of self axis, and then drive the horizontal slip of cleaning mechanism, thereby drive brush hair 424 and carry out the scraping back and forth to filter screen 2, realize the cleanness to filter screen 2.
As shown in fig. 1, the bottoms of two side surfaces (left and right side surfaces in fig. 1) of the casing 1 protrude from the bottom surface of the casing 1, two fixing rods 12 are fixedly arranged below the bottom surface of the casing 1 at intervals along the length direction of the casing, one fixing rod is correspondingly arranged below each screw, a second sliding groove is arranged on one side of each fixing rod 12 close to the casing 1 along the length direction of the fixing rod 12, and one side of the sliding block 43 far away from the casing 1 is slidably arranged in the corresponding second sliding groove, so that the sliding block 43 is horizontally slidably connected with the casing 1.
In another technical scheme, the relay protection device, be equipped with two pairs of terminals 31 on the relay protection device 3, one of them a pair of terminal 31 is connected with load power source interface 32 through a first wire respectively, and a pair of terminal 31 is connected with coil power source interface 33 through a second wire respectively in addition. The wire is pegged graft through load power source interface 32 and coil power source interface 33 among this technical scheme, need not to work a telephone switchboard on relay protection device 3's terminal 31, improves relay protection device wiring's agility, protects terminal 31 on relay protection device 3 simultaneously, prevents to work a telephone switchboard many times and takes out stitches the damage that leads to terminal 31.
In another technical solution, in the relay protection device, the housing 1 is provided with a first through hole for two load power interfaces 32 to pass through and a second through hole for two coil power interfaces 33 to pass through. Set up first perforation and second perforation among this technical scheme and stretch out load power source 32 and coil power source 33's the other end to the outside of casing 1, conveniently install the inside back of casing 1 at relay protection ware 3, the grafting operation of load power source 32 and coil power source 33 other end.
The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (7)
1. A relay protection device, comprising:
the bottom of the shell is provided with a vent, and a filter screen is arranged in the vent; a heat radiation fan is arranged inside the shell;
a relay protector provided inside the housing;
the cleaning mechanism is arranged on the outer side of the filter screen and comprises a bristle frame in sliding connection with the shell and a brush detachably connected with the bristle frame.
2. The relay protection device according to claim 1, wherein the bristle holder has a strip-like structure with a hollow interior and an open end, one end of the bristle holder is provided with a cover capable of being opened and closed, and one side of the bristle holder is provided with a first chute communicated with the hollow interior;
the brush comprises a strip-shaped slide rail, a brush hair plate, a connecting plate and a plurality of clusters of brush hairs, wherein the strip-shaped slide rail is connected with the interior of the brush hair frame in a sliding manner; the connecting plate is smaller than the first sliding chute in size and can slide in the first sliding chute.
3. The relay protection device according to claim 2, wherein the brush plate has a plurality of brush fixing holes, each brush fixing hole has a cluster of brush fixed therein, the brush plate has dust-absorbing cotton laid thereon, and the dust-absorbing cotton has a plurality of through holes for the plurality of clusters of brush to pass through.
4. The relay protection device according to claim 1, wherein heat dissipation holes are formed in a side wall of the housing.
5. The relay protection device according to claim 3, wherein two sliders are spaced apart from each other on the bristle plate, and one side of each slider is horizontally slidably connected to the housing;
the relay protection device further comprises a driving mechanism which comprises:
the motor is fixedly arranged on the shell;
the two screw rods are horizontally arranged at intervals, each screw rod is vertical to the bristle holder, and two ends of each screw rod are respectively and rotatably connected with the side wall of the shell; the two sliding blocks are respectively sleeved on the two screw rods in a threaded rotating manner; one end of each screw is linked through a transmission belt, and one end of one screw is connected with an output shaft of the motor.
6. The relay protection device according to claim 1, wherein the relay protection device is provided with two pairs of terminals, one pair of terminals is connected to the load power interface through a first wire, and the other pair of terminals is connected to the coil power interface through a second wire.
7. The relay protection device according to claim 6, wherein the housing has a first through hole for passing the two load power supply ports and a second through hole for passing the two coil power supply ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221957909.2U CN218417071U (en) | 2022-07-27 | 2022-07-27 | Relay protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221957909.2U CN218417071U (en) | 2022-07-27 | 2022-07-27 | Relay protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218417071U true CN218417071U (en) | 2023-01-31 |
Family
ID=85014830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221957909.2U Expired - Fee Related CN218417071U (en) | 2022-07-27 | 2022-07-27 | Relay protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218417071U (en) |
-
2022
- 2022-07-27 CN CN202221957909.2U patent/CN218417071U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20230131 |
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| CF01 | Termination of patent right due to non-payment of annual fee |