CN210404382U - Distribution network automation cabinet with lightning protection function - Google Patents
Distribution network automation cabinet with lightning protection function Download PDFInfo
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- CN210404382U CN210404382U CN201921221403.3U CN201921221403U CN210404382U CN 210404382 U CN210404382 U CN 210404382U CN 201921221403 U CN201921221403 U CN 201921221403U CN 210404382 U CN210404382 U CN 210404382U
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Abstract
A distribution network automation cabinet with a lightning protection function comprises a cabinet body, a waterproof base, a first grounding bolt, a first flashing and a lightning rod; a support column is arranged at the lower end of the waterproof base; the cabinet body is arranged at the upper end of the waterproof base, and an installation bin and a ventilation bin are arranged inside the cabinet body; the ventilation bin is provided with an air inlet and an air outlet on the cabinet body; a second blowing device and a first blowing device which are used for blowing air and exhausting air into the mounting bin are arranged in the ventilation bin; a temperature sensor and a controller are arranged in the mounting bin, and a sealing door is arranged at a first opening of the mounting bin in a sealing manner; the controller is respectively connected with the temperature sensor, the first air blowing device and the second air blowing device; the first rain shielding plates which are symmetrically arranged are in a herringbone shape and form a rain shelter at the top of the cabinet body; the lightning rod sets up perpendicularly respectively on the rainshelter, and the lightning rod is the first earth bolt of electric connection ground connection respectively. The utility model provides a join in marriage net automation cabinet's good heat dissipation and can effectual lightning protection.
Description
Technical Field
The utility model relates to a distribution network automation cabinet technical field especially relates to a distribution network automation cabinet of utensil lightning protection function.
Background
The distribution network automation cabinet is a measurement and control integrated device which is arranged at a switch station, a distribution room, a ring main unit, a box-type substation and the like of a distribution network feeder line loop and has the functions of remote signaling, remote measurement, remote control and the like. It generally comprises: the terminal comprises a cabinet, a terminal body, a storage battery, an aviation socket, a button, an indicator light, optical fiber wiring and communication equipment. The distribution network automation cabinet is easy to be struck by lightning when being installed at a higher position outdoors and is not protected by a lightning rod, and the distribution network automation cabinet is internally provided with expensive electrical elements, so that the distribution network automation cabinet can bring great economic loss to people when being struck by lightning; the high temperature that the electrical equipment in the distribution network automation cabinet produced when moving can influence the stability and the life of equipment.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
For solving the technical problem who exists among the background art, the utility model provides an utensil lightning protection function's distribution network automation cabinet, the utility model provides a good heat dissipation of distribution network automation cabinet, and can effectual lightning protection.
(II) technical scheme
The utility model provides a distribution network automation cabinet with lightning protection function, which comprises a cabinet body, a placing plate, a first air blowing device, a waterproof base, a supporting column, a first fixing plate, a first grounding bolt, a first rain shielding plate, a lightning rod, a sealing door and a second air blowing device;
a support column is arranged at the lower end of the waterproof base; the first fixing plates are respectively and vertically arranged on the supporting columns; the first fixing plates are respectively provided with a first mounting hole;
the cabinet body is arranged at the upper end of the waterproof base, and a partition board is arranged inside the cabinet body; the partition board is used for dividing the interior of the cabinet body into an installation bin and a ventilation bin for installing terminal equipment, and a first through hole and a second through hole for communicating the installation bin with the ventilation bin are formed in the partition board;
the ventilation bin is provided with an air inlet and an air outlet on the cabinet body; the air inlet and the air outlet are respectively provided with a dustproof filter screen; the first air blowing devices are respectively arranged in the ventilation bins, and air inlet ends of the first air blowing devices are respectively connected with the first through holes; the second air blowing devices are respectively arranged in the air ventilation bins, the air inlet ends of the second air blowing devices are respectively connected with the air inlet holes, and the air outlet ends of the second air blowing devices are respectively connected with the second through holes;
a placing plate, a temperature sensor and a controller which are used for classifying and installing terminal equipment are arranged in the installation bin, and a first opening is formed in the cabinet body of the installation bin; a sealing door is arranged at the first opening in a sealing way; the controller is respectively connected with the temperature sensor, the first air blowing device and the second air blowing device;
the first rain shielding plates are symmetrically arranged by taking the central axis of the cabinet body as the center; the first rain sheltering plates which are symmetrically arranged are in a herringbone shape and form a rain shelter; the rain shelter is arranged at the top of the cabinet body;
the lightning rods are respectively and vertically arranged on the rain shelters and are respectively and electrically connected with the first grounding bolts; the first grounding bolt is screwed into the first mounting hole and the ground in sequence.
Preferably, the waterproof base comprises a rubber plate, a foam plate and a stainless steel plate; the upper end of cystosepiment sets up the rubber slab that is used for connecting the cabinet body respectively, and the lower extreme of cystosepiment sets up the corrosion resistant plate who is used for the joint support post respectively.
Preferably, the sealing door is provided with a transparent window and a lockset for locking the sealing door and the cabinet body.
Preferably, the lowest positions of the end surfaces of the first flashing plates are respectively and vertically provided with second flashing plates; two ends of the second flashing and the first flashing are respectively connected with a third flashing; rain collecting grooves for collecting rainwater are formed among the third rain shielding plate, the second rain shielding plate and the first rain shielding plate respectively; the bottom surfaces of the rain collecting grooves are respectively provided with a drain hole; the drain holes are respectively connected with a water inlet pipe orifice of a drain pipe; the drain pipes are respectively arranged on the cabinet body.
Preferably, the drain pipe is made of plastic materials.
Preferably, the drain ports of the drain pipes are respectively and detachably provided with a conductive cylinder; the two ends of the conductive cylinder are respectively and uniformly provided with a third through hole for rainwater to pass through and a threading hole for a lead to pass through; one end of the lead respectively passes through the threading hole and is connected with the fastening piece; the fastening pieces are respectively arranged on the conductive cylinders; the other ends of the leads are respectively connected with second grounding bolts; the second grounding bolts are respectively in threaded connection with the second fixing plates; the second fixed plates are respectively arranged on the supporting columns.
Preferably, a refrigerating box is also arranged in the ventilating bin; a heat-conducting plate is arranged on the refrigeration box; the heat conducting plate is used for dividing the interior of the refrigeration box into a refrigeration bin and a heat dissipation bin, and mounting grooves are uniformly formed in the end face, located in the heat dissipation bin, of the heat conducting plate;
the refrigeration bin is provided with a fourth through hole used for being connected with the second through hole and a fifth through hole connected with the air outlet end of the second air blowing device on the refrigeration box;
the cooling bin is provided with a second opening on the refrigeration box, and a semiconductor refrigeration sheet is arranged in the cooling bin; the semiconductor refrigeration pieces are respectively arranged in the mounting grooves, the cold ends of the semiconductor refrigeration pieces are respectively pressed against the bottom surfaces of the mounting grooves, and the hot ends of the semiconductor refrigeration pieces are respectively arranged on the heat dissipation plates; the heat dissipation plate is arranged in the heat dissipation bin.
Preferably, the radiating fins are uniformly arranged on the radiating plate; one end of the radiating fin, which is far away from the radiating plate, extends out of the second opening respectively.
Preferably, the second through holes are respectively connected with an air supply pipe; the air supply pipes are respectively connected with the air inlet ends of the spray heads; the shower nozzle sets up respectively in the installation storehouse, and the shower nozzle is located the one side of keeping away from first through-hole respectively.
The above technical scheme of the utility model has following profitable technological effect:
in the utility model, the temperature in the installation bin is detected by the arranged temperature sensor, and when the temperature in the installation bin reaches the threshold value set by the temperature sensor; the controller controls the first air blowing device and the second air blowing device to operate, the second air blowing device blows air into the installation bin to dissipate heat of equipment in the installation bin, and the first air blowing device discharges hot air in the installation bin, so that the equipment in the installation bin is quickly dissipated; the lightning rod is connected with the first grounding bolt which is grounded, and when the cabinet body is arranged outdoors, the lightning rod can effectively prevent the cabinet body from being damaged by lightning striking;
in addition, the rain collecting groove arranged on the rain shelter collects rainwater, rainwater is prevented from directly falling to wet pedestrians or maintenance personnel, the rainwater is discharged through the drain pipe, and the conductive barrel arranged in the drain pipe is used for guiding electricity in the rainwater into the ground through the conductive barrel and the second grounding bolt when the rainwater is conductive; the condition that the falling rainwater is conducted to pedestrians or maintenance personnel is avoided; the refrigeration case that is equipped with is used for to installing the interior equipment radiating effect of arranging into air conditioning in the storehouse in order to improve the installation storehouse.
Drawings
Fig. 1 is the utility model provides a structural schematic diagram of a distribution network automation cabinet of utensil lightning protection function.
Fig. 2 is the utility model provides a have lightning protection function's distribution network automation cabinet in A department local enlarged structural sketch.
Fig. 3 is the utility model provides a have the lightning protection function join in marriage network automation cabinet in B department enlarged schematic structure view partially.
Fig. 4 is the utility model provides a have lightning protection function's distribution network automation cabinet in C department enlarged schematic structure view.
Fig. 5 is a front view of the utility model provides a distribution network automation cabinet of utensil lightning protection function.
Fig. 6 is the utility model provides a waterproof base's in distribution network automation cabinet of utensil lightning protection function structural schematic.
Reference numerals: 1. a cabinet body; 2. installing a bin; 3. placing the plate; 4. a partition plate; 5. a first through hole; 6. a second through hole; 7. a first blowing device; 8. a ventilation bin; 9. a waterproof base; 91. a rubber plate; 92. a foam board; 93. a stainless steel plate; 10. a support pillar; 11. a first fixing plate; 12. a first ground bolt; 13. a refrigeration case; 14. a second fixing plate; 15. a second ground bolt; 16. a drain pipe; 17. a temperature sensor; 18. a controller; 19. a spray head; 20. a first flashing; 21. a lightning rod; 22. a heat conducting plate; 23. a refrigeration bin; 24. a semiconductor refrigeration sheet; 25. a heat dissipation plate; 26. a heat sink; 27. a conductive barrel; 28. a tightening piece; 29. a second flashing; 30. a rain collecting groove; 31. a drain hole; 32. a third flashing; 33. a sealing door; 34. an air inlet; 35. and (4) exhausting holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-6, the utility model provides a distribution network automation cabinet with lightning protection function, including the cabinet body 1, place board 3, first blast apparatus 7, waterproof base 9, support column 10, first fixed plate 11, first earth bolt 12, first flashing 20, lightning rod 21, sealing door 33 and second blast apparatus;
a support column 10 is arranged at the lower end of the waterproof base 9; the supporting columns 10 are respectively and vertically provided with a first fixing plate 11; the first fixing plates 11 are respectively provided with a first mounting hole;
the cabinet body 1 is arranged at the upper end of the waterproof base 9, and a partition plate 4 is arranged inside the cabinet body 1; the partition plate 4 is used for dividing the interior of the cabinet body 1 into an installation bin 2 for installing terminal equipment and a ventilation bin 8, and the partition plate 4 is provided with a first through hole 5 and a second through hole 6 which are used for communicating the installation bin 2 with the ventilation bin 8;
the ventilation bin 8 is provided with an air inlet 34 and an air outlet 35 on the cabinet body 1; dustproof filter screens are respectively arranged in the air inlet 34 and the air outlet 35;
the first air blowing devices 7 are respectively arranged in the ventilation bins 8, and the air inlet ends of the first air blowing devices 7 are respectively connected with the first through holes 5; the first air blowing device 7 adopts an exhaust fan;
the second air blowing devices are respectively arranged in the ventilation bin 8, the air inlet ends of the second air blowing devices are respectively connected with the air inlet holes 34, and the air outlet ends of the second air blowing devices are respectively connected with the second through holes 6; the second air blowing device selects an exhaust fan;
a placing plate 3 for classifying and installing terminal equipment, a temperature sensor 17 and a controller 18 are arranged in the installation bin 2, and the installation bin 2 is provided with a first opening on the cabinet body 1; a sealing door 33 is arranged at the first opening in a sealing way; the controller 18 is respectively connected with the temperature sensor 17, the first air blowing device 7 and the second air blowing device;
the first rain shielding plates 20 are symmetrically arranged by taking the central axis of the cabinet body 1 as the center; the first rain shields 20 arranged symmetrically are herringbone and form a rain shelter; the rain shelter is arranged at the top of the cabinet body 1;
the lightning rods 21 are respectively vertically arranged on the rain shelters, and the lightning rods 21 are respectively electrically connected with the first grounding bolts 12; the first grounding bolt 12 is screwed into the first mounting hole and the ground in sequence.
In the utility model, the temperature in the installation bin 2 is detected by the arranged temperature sensor 17, and when the temperature in the installation bin 2 reaches the threshold value set by the temperature sensor 17; the controller 18 controls the first air blowing device 7 and the second air blowing device to operate, the second air blowing device blows air into the installation bin 2 to dissipate heat of equipment in the installation bin 2, and the first air blowing device 7 discharges hot air in the installation bin 2, so that the equipment in the installation bin 2 is quickly dissipated; the lightning rod 21 that sets up is connected with the first earth bolt 12 of ground connection, and when the cabinet body 1 set up when outdoor, lightning rod 21 can effectually avoid the cabinet body 1 to suffer thunder and lightning strike and damage.
In an alternative embodiment, the waterproof mount 9 comprises a rubber plate 91, a foam plate 92 and a stainless steel plate 93; the upper ends of the foam boards 92 are respectively provided with a rubber board 91 for connecting the cabinet body 1, and the lower ends of the foam boards 92 are respectively provided with a stainless steel plate 93 for connecting the support columns 10; the waterproof base 9 that is equipped with can effectually avoid causing the damage to the cabinet body 1 when ground ponding.
In an alternative embodiment, the sealing door 33 is provided with a transparent window and a lock for locking the sealing door 33 with the cabinet 1.
In an alternative embodiment, the lowest of the end surfaces of the first flashing 20 is provided with a second flashing 29, respectively, vertically; both ends of the second flashing 29 and the first flashing 20 are connected to a third flashing 32, respectively; rain grooves 30 for collecting rainwater are formed among the third flashing 32, the second flashing 29 and the first flashing 20, respectively; the bottom surfaces of the rain grooves 30 are respectively provided with drain holes 31; the drain holes 31 are respectively connected with the water inlet pipe orifices of the drain pipes 16; the drain pipes 16 are respectively arranged on the cabinet body 1; the rainwater collecting groove 30 is used for collecting rainwater, so that rainwater is prevented from directly falling to wet pedestrians or maintenance personnel.
In an alternative embodiment, the drain pipes 16 are made of plastic.
In an alternative embodiment, the drain ports of the drain pipes 16 are respectively and detachably provided with a conductive cylinder 27; the two ends of the conductive cylinder 27 are respectively and uniformly provided with a third through hole for rainwater to pass through and a threading hole for a lead to pass through; one end of the lead respectively passes through the threading holes and is connected with the fastening piece 28; the tightening pieces 28 are respectively provided on the conductive cylinders 27; the other ends of the wires are respectively connected with a second grounding bolt 15; the second ground bolts 15 are respectively in threaded connection with the second fixing plates 14; the second fixing plates 14 are respectively arranged on the supporting columns 10; the conductive cylinder 27 is used for guiding electricity in rainwater to the ground through the conductive cylinder 27 and the second grounding bolt 15 when the rainwater is conductive; the rainwater that avoids the whereabouts is electrically conductive to cause pedestrian or maintenance personal.
In an optional embodiment, a refrigeration box 13 is also arranged in the ventilation bin 8; a heat-conducting plate 22 is arranged on the refrigeration box 13; the heat conducting plate 22 is used for dividing the interior of the refrigeration box 13 into a refrigeration bin 23 and a heat dissipation bin, and mounting grooves are uniformly formed in the end face, located in the heat dissipation bin, of the heat conducting plate 22;
the refrigerating bin 23 is provided with a fourth through hole used for being connected with the second through hole 6 and a fifth through hole connected with the air outlet end of the second air blowing device on the refrigerating box 13;
the cooling bin is provided with a second opening on the refrigerating box 13, and a semiconductor refrigerating sheet 24 is arranged in the cooling bin; the semiconductor refrigeration pieces 24 are respectively arranged in the mounting grooves, the cold ends of the semiconductor refrigeration pieces 24 are respectively pressed against the bottom surfaces of the mounting grooves, and the hot ends of the semiconductor refrigeration pieces 24 are respectively arranged on the heat dissipation plates 25; the heat dissipation plate 25 is disposed in the heat dissipation chamber.
In an alternative embodiment, the heat dissipation plate 25 is uniformly provided with heat dissipation fins 26; the ends of the heat radiating fins 26 remote from the heat radiating plate 25 protrude through the second openings, respectively.
In an alternative embodiment, the second through holes 6 are respectively connected with an air supply pipe; the air pipes are respectively connected with the air inlet ends of the spray heads 19; the spray heads 19 are respectively arranged in the mounting bins 2, and the spray heads 19 are respectively positioned at one side far away from the first through holes 5.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. The distribution network automation cabinet with the lightning protection function is characterized by comprising a cabinet body (1), a placing plate (3), a first blowing device (7), a waterproof base (9), a supporting column (10), a first fixing plate (11), a first grounding bolt (12), a first rain shielding plate (20), a lightning rod (21), a sealing door (33) and a second blowing device;
a support column (10) is arranged at the lower end of the waterproof base (9); the supporting columns (10) are respectively and vertically provided with a first fixing plate (11); the first fixing plates (11) are respectively provided with a first mounting hole;
the cabinet body (1) is arranged at the upper end of the waterproof base (9), and a partition plate (4) is arranged inside the cabinet body (1); the partition plate (4) is used for dividing the interior of the cabinet body (1) into an installation bin (2) for installing terminal equipment and a ventilation bin (8), and a first through hole (5) and a second through hole (6) for communicating the installation bin (2) with the ventilation bin (8) are formed in the partition plate (4);
the ventilation bin (8) is provided with an air inlet (34) and an air outlet (35) on the cabinet body (1); dustproof filter screens are respectively arranged in the air inlet (34) and the air outlet (35); the first air blowing devices (7) are respectively arranged in the ventilation bins (8), and air inlet ends of the first air blowing devices (7) are respectively connected with the first through holes (5); the second air blowing devices are respectively arranged in the ventilation bins (8), the air inlet ends of the second air blowing devices are respectively connected with the air inlet holes (34), and the air outlet ends of the second air blowing devices are respectively connected with the second through holes (6);
a placing plate (3) for classifying and installing terminal equipment, a temperature sensor (17) and a controller (18) are arranged in the installation bin (2), and a first opening is formed in the cabinet body (1) of the installation bin (2); a sealing door (33) is arranged at the first opening in a sealing way; the controller (18) is respectively connected with the temperature sensor (17), the first air blowing device (7) and the second air blowing device;
the first rain shielding plates (20) are symmetrically arranged by taking the central axis of the cabinet body (1) as the center; the first rain shields (20) which are symmetrically arranged are herringbone and form a rain shelter; the rain shelter is arranged at the top of the cabinet body (1); the lightning rods (21) are respectively and vertically arranged on the rain shelters, and the lightning rods (21) are respectively and electrically connected with the first grounding bolts (12); the first grounding bolt (12) is screwed into the first mounting hole and the ground in sequence.
2. The distribution network automation cabinet with lightning protection function according to claim 1, wherein the waterproof base (9) comprises a rubber plate (91), a foam plate (92) and a stainless steel plate (93); the upper end of cystosepiment (92) sets up rubber slab (91) that is used for connecting the cabinet body (1) respectively, and the lower extreme of cystosepiment (92) sets up stainless steel board (93) that are used for connecting support column (10) respectively.
3. The distribution network automation cabinet with lightning protection function according to claim 1, wherein the sealing door (33) is provided with a transparent window and a lock for locking the sealing door (33) with the cabinet body (1).
4. The distribution network automation cabinet with lightning protection function according to claim 1, characterized in that the lowest positions of the end surfaces of the first rain shields (20) are respectively and vertically provided with second rain shields (29); the two ends of the second flashing (29) and the first flashing (20) are respectively connected with a third flashing (32); rain grooves (30) for collecting rainwater are respectively formed among the third rain shielding plate (32), the second rain shielding plate (29) and the first rain shielding plate (20); the bottom surfaces of the rain collecting grooves (30) are respectively provided with a drain hole (31); the drain holes (31) are respectively connected with a water inlet pipe orifice of the drain pipe (16); the drain pipes (16) are respectively arranged on the cabinet body (1).
5. The distribution network automation cabinet with lightning protection function according to claim 4 is characterized in that the drainage pipes (16) are made of plastic material.
6. The distribution network automation cabinet with lightning protection function according to claim 4, characterized in that the drain pipe (16) is provided with a conductive cylinder (27) in the drain port; the two ends of the conductive cylinder (27) are respectively and uniformly provided with a third through hole for rainwater to pass through and a threading hole for a lead to pass through; one end of the lead respectively passes through the threading holes and is connected with the fastening piece (28); the fastening pieces (28) are respectively arranged on the conductive cylinders (27); the other ends of the leads are respectively connected with a second grounding bolt (15); the second grounding bolts (15) are respectively in threaded connection with the second fixing plates (14); the second fixing plates (14) are respectively arranged on the supporting columns (10).
7. The distribution network automation cabinet with lightning protection function according to claim 1, characterized in that a refrigeration box (13) is further arranged in the ventilation bin (8); a heat-conducting plate (22) is arranged on the refrigeration box (13); the heat-conducting plate (22) is used for dividing the interior of the refrigeration box (13) into a refrigeration bin (23) and a heat dissipation bin, and mounting grooves are uniformly formed in the end face, located in the heat dissipation bin, of the heat-conducting plate (22);
the refrigerating bin (23) is provided with a fourth through hole used for being connected with the second through hole (6) and a fifth through hole connected with the air outlet end of the second air blowing device on the refrigerating box (13);
a second opening is arranged on the cooling box (13) of the cooling bin, and a semiconductor cooling sheet (24) is arranged in the cooling bin; the semiconductor refrigeration pieces (24) are respectively arranged in the mounting grooves, the cold ends of the semiconductor refrigeration pieces (24) are respectively pressed against the bottom surfaces of the mounting grooves, and the hot ends of the semiconductor refrigeration pieces (24) are respectively arranged on the heat dissipation plates (25); the heat dissipation plate (25) is arranged in the heat dissipation bin.
8. The distribution network automation cabinet with lightning protection function according to claim 7, characterized in that the heat dissipation plate (25) is uniformly provided with heat dissipation fins (26); one ends of the radiating fins (26) far away from the radiating plate (25) respectively extend out of the second openings.
9. The distribution network automation cabinet with lightning protection function according to claim 7, characterized in that the second through holes (6) are respectively connected with an air supply pipe; the air pipes are respectively connected with the air inlet ends of the spray heads (19); the spray heads (19) are respectively arranged in the mounting bins (2), and the spray heads (19) are respectively positioned at one side far away from the first through holes (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921221403.3U CN210404382U (en) | 2019-07-30 | 2019-07-30 | Distribution network automation cabinet with lightning protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921221403.3U CN210404382U (en) | 2019-07-30 | 2019-07-30 | Distribution network automation cabinet with lightning protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210404382U true CN210404382U (en) | 2020-04-24 |
Family
ID=70357527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921221403.3U Expired - Fee Related CN210404382U (en) | 2019-07-30 | 2019-07-30 | Distribution network automation cabinet with lightning protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210404382U (en) |
-
2019
- 2019-07-30 CN CN201921221403.3U patent/CN210404382U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 Termination date: 20210730 |