CN113612148B - Contact box and high-voltage switch cabinet provided with same - Google Patents
Contact box and high-voltage switch cabinet provided with same Download PDFInfo
- Publication number
- CN113612148B CN113612148B CN202110890159.5A CN202110890159A CN113612148B CN 113612148 B CN113612148 B CN 113612148B CN 202110890159 A CN202110890159 A CN 202110890159A CN 113612148 B CN113612148 B CN 113612148B
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- Prior art keywords
- contact
- box
- contact box
- box body
- heat dissipation
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
- H02B11/04—Isolating-contacts, e.g. mountings or shieldings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/24—Shutters or guards
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention belongs to the technical field of switch cabinets, and particularly relates to a contact box and a high-voltage switch cabinet provided with the contact box. The invention greatly improves the structural strength of the contact box installation, has high connection stability and good anti-drop property, has good shock resistance, solves the problem that nuts are easy to drop when the traditional contact box is installed, and can effectively improve the heat dissipation efficiency of the contact box by adopting a water-cooling and air-cooling combined heat dissipation cooling mode, ensure the use safety of the contact box, ensure the beneficial linkage of the heat dissipation systems of the high-voltage switch cabinet and the contact box, realize the purpose of rapid heat dissipation while assisting the heat dissipation of the box body, and further improve the use safety of the high-voltage switch cabinet.
Description
Technical Field
The invention relates to the technical field of switch cabinets, in particular to a contact box and a high-voltage switch cabinet provided with the contact box.
Background
The high-voltage switch cabinet is used for power generation, power transmission, power distribution, electric energy conversion and consumption of a power system and has the functions of on-off, control or protection. The high-voltage switch cabinet is used as an electric product with the voltage class of 3.6 kV-550 kV, and the high-voltage isolating switch, the grounding switch, the high-voltage load switch, the high-voltage automatic superposition and sectionalizer, the high-voltage operating mechanism, the high-voltage explosion-proof power distribution device, the high-voltage switch cabinet and the like are large.
The contact box is an epoxy resin APG process pressure gel forming structure and is used for various handcart type switch cabinets, and plays roles of insulation isolation and connection transition. The contact box is an insulating part applied to various handcart type switch cabinets, and a busbar for input and output can be connected at the contact box. The structure of the existing contact box generally comprises a cylindrical body with a closed top, wherein the bottom of the body is opened for a busbar to extend in, a connecting port is additionally and penetratingly formed in the side part of the body for another busbar to extend in, an insert for fixing the busbar is further fixed on the inner side of the top of the body, and the input and output busbar can be fixedly connected and conducted in the body.
The traditional high-voltage switch cabinet is generally characterized in that the contact box is directly fixed on a partition plate (a valve) of the high-voltage switch cabinet through a bolt when the contact box is installed, the defect that the strength is insufficient and the shock resistance is poor exists in the installation structure of the contact box, nuts on the bolt are easy to fall off, connection is unstable, the traditional contact box is poor in heat dissipation performance and cannot be combined with a heat dissipation system of the switch cabinet, and the use safety of the high-voltage switch cabinet cannot be guaranteed.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a contact box and a high-voltage switch cabinet provided with the contact box, and solves the problems that the traditional high-voltage switch cabinet is generally characterized in that the contact box is directly fixed on a baffle plate (a valve) of the high-voltage switch cabinet through bolts when the contact box is installed, the installation structure of the contact box has the defects of insufficient strength and poor shock resistance, nuts on the bolts are easy to fall off, the connection is unstable, the traditional contact box has poor heat dissipation performance and cannot be combined with a heat dissipation system of the switch cabinet, and the use safety of the high-voltage switch cabinet cannot be guaranteed.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a contact box, is applied to high-voltage switch cabinet, the contact box includes the box body, be equipped with the lead wire mouth on the box body, the inner chamber top of box body is equipped with the mounting groove, there is the stationary contact through mounting fixed mounting in the mounting groove, the inside interlude of lead wire mouth has the female row of connecting the stationary contact, the top of box body is equipped with the air vent, the top of air vent is equipped with outer uncovered, the laminating of the inner wall surface of outer uncovered has the drier package, the inside of drier package is packed there is the drier, the inner wall inside of box body is equipped with the water-cooling coiled pipe, be connected with water-cooling feed liquor pipe and water-cooling return liquor pipe on the lateral wall of box body respectively, water-cooling feed liquor pipe and water-cooling return liquor pipe are connected with water inlet and the delivery port of water-cooling coiled pipe respectively, the bottom of box body is equipped with the base, the inside cartridge has, the inside of box body is inserted and is equipped with the sleeve, the inside of sleeve corresponds the position of stationary contact is equipped with vertical passageway, the periphery circumference of telescopic inside corresponds vertical passageway has the passageway, the inside fixed mounting of bottom of passageway has a drier package, the first fan, the bottom of installing and is equipped with the heat extraction bolt, install the second lock nut is used for installing in between the lock nut and the lock nut.
As a preferable technical scheme of the invention, the water-cooling coil pipe spirally ascends to the peripheral position of the outer opening along the inner wall of the box body.
As a preferable technical scheme of the invention, the diameter of the outer opening is larger than that of the vent hole, and the bottom end of the outer opening is provided with a filter screen.
As a preferable technical scheme of the invention, the outer wall of the box body is provided with an umbrella skirt.
As a preferable technical scheme of the invention, a shielding sleeve is arranged on the inner wall of the box body corresponding to the periphery of the fixed contact.
The invention also provides a high-voltage switch cabinet, which comprises a cabinet body, wherein a baffle plate for installing a contact box is arranged in the cabinet body, a base is installed on the baffle plate through a locking bolt and locked through a first nut, a plug-in hole matched with a sleeve is formed in the baffle plate, a bus chamber and a handcart chamber are respectively arranged at the left side and the right side of the corresponding baffle plate in the cabinet body, a bus sleeve is arranged in the bus chamber, a main bus is arranged in the bus sleeve, the main bus is connected with a bus bar through a branch bus, a sliding handcart is arranged in the handcart chamber, a circuit breaker is installed on the sliding handcart, the circuit breaker is connected with a fixed contact through a pole contact assembly, the pole contact assembly of the circuit breaker is driven to be separated from and connected with the fixed contact by sliding the front and the back of the sliding handcart, and a second heat dissipation fan is fixedly installed in the inner wall of the baffle plate.
As a preferable technical scheme of the invention, the outer wall of the cabinet body is coated with an epoxy resin coating.
As a preferable technical scheme of the invention, the side wall of the cabinet body corresponding to the bus chamber is provided with an air inlet, the side wall of the cabinet body corresponding to the handcart chamber is provided with an air outlet, and the air inlet, the second heat dissipation fan and the air outlet form a heat dissipation channel.
As a preferable technical scheme of the invention, the baffle is provided with a positioning groove for positioning the base.
(III) beneficial effects
Compared with the prior art, the invention provides the contact box and the high-voltage switch cabinet provided with the contact box, which have the following beneficial effects:
1. this contact box and install high tension switchgear of this contact box, through the integrated configuration setting of mount pad, first nut, second nut, baffle, greatly improved the structural strength of contact box installation, connection stability is high, and the anticreep nature is good to have good shock resistance, easily take place the problem that the nut drops when having solved traditional contact box installation.
2. The contact box and the high-voltage switch cabinet provided with the contact box adopt a water-cooling and air-cooling combined heat dissipation cooling mode, so that the heat dissipation efficiency of the contact box can be effectively improved, and the use safety of the contact box is ensured.
3. This contact box and install high tension switchgear of this contact box constitute heat extraction passageway through air inlet, second cooling fan and gas vent, make the heat dissipation system of high tension switchgear and contact box carry out the beneficial linkage, when supplementary box body heat dissipation, reach the purpose of quick heat extraction, make the safety in utilization of high tension switchgear further obtain promoting.
Drawings
FIG. 1 is a schematic view of a box body according to the present invention;
FIG. 2 is a cross-sectional view of a contact box according to the present invention;
FIG. 3 is a schematic view of a sleeve according to the present invention;
FIG. 4 is a schematic view of a part of the internal structure of the cabinet according to the present invention;
fig. 5 is a schematic view of the installation structure of the contact box and the partition board in the present invention.
In the figure: 1. a case body; 2. a lead wire port; 3. a mounting groove; 4. a stationary contact; 5. a busbar; 6. a vent hole; 7. an outer opening; 8. packing a drying agent; 9. a water-cooling coil pipe; 10. a water-cooling liquid inlet pipe; 11. a water-cooling liquid return pipe; 12. a base; 13. a sleeve; 14. a vertical channel; 15. a heat removal channel; 16. a first heat dissipation fan; 17. a mounting base; 18. a locking bolt; 19. a first nut; 20. a second nut; 21. umbrella skirt; 22. a shielding sleeve; 23. a cabinet body; 24. a partition plate; 25. a bus bar chamber; 26. a handcart room; 27. a main bus; 28. a branch bus; 29. a sliding handcart; 30. a circuit breaker; 31. a pole contact assembly; 32. and the second heat radiation fan.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a contact box, be applied to high-voltage switch cabinet, the contact box includes box body 1, be equipped with lead opening 2 on the box body 1, the inner chamber top of box body 1 is equipped with mounting groove 3, there is stationary contact 4 through mounting fixed mounting in mounting groove 3, the inside interlude of lead opening 2 has female row 5 of connecting stationary contact 4, the top of box body 1 is equipped with air vent 6, the top of air vent 6 is equipped with outer uncovered 7, the inner wall surface laminating of outer uncovered 7 has drier jacket 8, the inside packing of drier jacket 8 has the drier, the inside of box body 1 is equipped with water-cooling coil 9, be connected with water-cooling feed pipe 10 and water-cooling return pipe 11 on the lateral wall of box body 1 respectively, water-cooling feed pipe 10 and water-cooling return pipe 11 are connected with the water inlet and the delivery port of water-cooling coil 9 respectively, the bottom of box body 1 is equipped with base 12, the inside cartridge 13 that inserts of box body 1 is equipped with, the inside of cartridge 13 corresponds the inside and is equipped with vertical passageway 14, the inside of cartridge 13 corresponds vertical passageway 14, the peripheral circumference equipartition of outer passageway 15, the inside of the corresponding vertical passageway 16 of bottom of passageway 15 is equipped with first heat extraction 16, the inside mounting groove 16 is equipped with the heat extraction nut 17 and second nut 17 is equipped with the second nut 20 through the lock nut that is equipped with the base 17, the lock nut is used for the second nut of the lock nut of the second base 17, the lock nut is equipped with the lock nut of the second base 17, the lock nut is used for the lock nut is mounted to the top 17, the nut is used for the second nut is equipped with the lock nut 17.
In this embodiment, a water cooling system is formed among the water cooling liquid inlet pipe 10, the water cooling liquid return pipe 11, the circulating pump and the water cooling tank, the circulating pump is used for dry operation, the water cooling liquid in the water cooling tank is pumped into the water cooling coil pipe 9 through the water cooling liquid inlet pipe 10 so as to absorb the heat of the box body 1, the hot water cooling liquid after heat exchange is returned to the water cooling tank through the water cooling liquid return pipe 11, and the purpose of rapidly cooling the box body 1 is achieved by the water cooling system.
Specifically, the water-cooling coil 9 is spirally lifted to the peripheral position of the outer opening 7 along the inner wall of the box body 1.
In this embodiment, the water cooling coil 9 arranged at the periphery of the inner wall of the box body 1 and the periphery of the outer opening 7 can be used for rapidly cooling the contact box, so that the cooling efficiency is improved, and the normal and safe operation of the contact box is ensured.
Specifically, the diameter of the outer opening 7 is larger than that of the vent hole 6, and a filter screen is arranged at the bottom end of the outer opening 7.
In this embodiment, through setting up the filter screen in the bottom of outer open 7, can filter the air that gets into in the box body 1, prevent impurity such as dust and get into inside the box body 1.
Specifically, the outer wall of the box body 1 is provided with an umbrella skirt 21.
In this embodiment, by providing the umbrella skirt 21 on the outer wall of the case 1, the structural strength of the case 1 can be improved.
Specifically, a shielding sleeve 22 is arranged on the inner wall of the box body 1 corresponding to the periphery of the fixed contact 4.
In this embodiment, the shielding sleeve 22 is disposed on the inner wall of the box body 1 corresponding to the periphery of the fixed contact 4, so that the shielding sleeve 22 can eliminate the dielectric discharge between the busbar 5, the fixed contact 4 and the box body 1, and avoid the occurrence of the mutual inductance phenomenon, so as to reduce the influence of the external electromagnetic field on the circuit.
The invention also provides a high-voltage switch cabinet, the high-voltage switch cabinet comprises a cabinet body 23, a baffle 24 for installing a contact box is arranged in the cabinet body 23, a base 12 is installed on the baffle 24 through a locking bolt 18 and locked through a first nut 19, a plug-in hole matched with a sleeve 13 is formed in the baffle 24, a bus chamber 25 and a handcart chamber 26 are respectively arranged on the left side and the right side of the cabinet body 23 corresponding to the baffle 24, a bus sleeve is arranged in the bus chamber 25, a main bus 27 is arranged in the bus sleeve, the main bus 27 is connected with a busbar 5 through a branch bus 28, a sliding handcart 29 is arranged in the handcart chamber 26, a circuit breaker 30 is installed on the sliding handcart 29, the circuit breaker 30 is connected with a fixed contact 4 through a pole contact assembly 31, the sliding handcart 29 slides back and forth to drive the pole contact assembly 31 of the circuit breaker 30 to be separated from and connected with the fixed contact 4, and a second heat dissipation fan 32 is fixedly installed in the inner wall of the baffle 24.
In this embodiment, it is preferable to set a controller in the cabinet 23, and embed temperature sensors in the cabinet 23 and the box 1, where the controller may use a PLC programmable controller, and electrically connect the temperature sensors, the first heat dissipation fan 16, and the second heat dissipation fan 32 with the PLC programmable controller, and monitor the ambient temperature in the cabinet 23 and the box 1 in real time through the temperature sensors in the cabinet 23 and the box 1, and when the ambient temperature in the cabinet 23 and the box 1 is higher than the internal threshold of the PLC programmable controller, control the first heat dissipation fan 16 and the second heat dissipation fan 32 to work through the PLC programmable controller, so as to accelerate the air circulation speed in the cabinet 23 and the box 1, achieve the purpose of rapid heat dissipation, and have significant cooling effect, and can prolong the service life of the contact box and the high-voltage switch cabinet, and ensure the safe operation thereof.
Specifically, the outer wall of the cabinet 23 is coated with an epoxy resin coating.
In this embodiment, the epoxy resin coating is coated on the outer wall of the cabinet body 23, so that the epoxy resin coating can be used for providing anti-corrosion protection for the cabinet body 23, and meanwhile, the epoxy resin coating also has better heat resistance and insulating property, strong adhesive force and excellent chemical resistance.
Specifically, an air inlet is formed on a side wall of the cabinet body 23 corresponding to the bus chamber 25, an air outlet is formed on a side wall of the cabinet body 23 corresponding to the handcart chamber 26, and the air inlet, the second heat dissipation fan 32 and the air outlet form a heat dissipation channel.
In this embodiment, the air inlet and the air outlet are formed on the side wall of the cabinet 23, and the heat dissipation channel is formed among the air inlet, the second heat dissipation fan 32 and the air outlet, so that the air flow speed in the cabinet 23 can be accelerated, and the heat dissipation efficiency of the cabinet 23 can be improved.
Specifically, the partition 24 is provided with a positioning groove for positioning the base 12.
In this embodiment, the positioning groove for positioning the base 12 is formed in the partition board 24, so that the contact box can be quickly positioned for installation, the conversion efficiency is improved, and the stability of the contact box for installation is improved.
The working principle and the using flow of the invention are as follows: when the contact box is assembled, firstly, the base 12 of the contact box corresponds to the positioning groove, the base 12 is placed in the positioning groove, the base 12 is installed on the partition board 24 through the insertion of the base 12 by the locking bolt 18, then the base 12 is locked by the first nut 19, after the contact box is fixed, the sleeve 13 carrying the first heat dissipation fan 16 is sequentially inserted into the box body 1 from the insertion hole on the partition board 24 and the bottom of the box body 1, so that the installation seat 17 is tightly attached to the first nut 19, and the installation seat 17 is locked at the bottom end of the first nut 19 by the second nut 20, thus the installation operation of the contact box is completed; when the circuit is connected, the busbar 5 is inserted from the lead port 2 and is connected with the fixed contact 4, the busbar 5 is connected with the main bus 27 through the branch bus 28, and when the circuit breaker 30 is connected with the fixed contact 4, the sliding handcart 29 is pushed to be static to enable the sliding handcart 29 to move forwards or backwards, and then the busbar is connected with or separated from the fixed contact 4 through the pole contact component 31; when the environmental temperature in the contact box and the high-voltage switch cabinet is too high, the first heat dissipation fan 16 and the second heat dissipation fan 32 are started, on one hand, the air in the box body 1 flows rapidly by utilizing the first heat dissipation fan 16, high-temperature gas in the box body 1 is pumped and discharged into the cabinet body 23 from the heat extraction channel 15, the safe and stable working environment of the contact box is ensured, the heat dissipation channel is formed by the air inlet, the second heat dissipation fan 32 and the air outlet, high-temperature air in the cabinet body 23 and part of high-temperature air discharged into the cabinet body 23 from the contact box are discharged to the outside of the cabinet body 23 rapidly through the heat dissipation channel, the purpose of rapid heat dissipation is achieved, on the other hand, water cooling liquid is conveyed into the water cooling coil 9 through the water cooling liquid inlet pipe 10, heat exchange is carried out by utilizing the heat absorbed by the inner wall of the water cooling liquid and the box body 1, hot water cooling liquid after heat exchange is returned into the water cooling box of the water cooling system through the water cooling liquid return pipe 11, and the purpose of rapid cooling is achieved.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Contact box is applied to high tension switchgear, the contact box includes box body (1), its characterized in that: lead wire mouth (2) are arranged on box body (1), mounting groove (3) are arranged at the top of the inner cavity of box body (1), fixed contact (4) are fixedly arranged in mounting groove (3) through mounting piece, busbar (5) connected with fixed contact (4) are inserted in the interior of lead wire mouth (2), vent hole (6) are arranged at the top of box body (1), outer opening (7) are arranged at the top of vent hole (6), drier jacket (8) are attached to the inner wall surface of outer opening (7), drier is filled in the interior of drier jacket (8), water-cooling coil pipe (9) are arranged in the interior of the inner wall of box body (1), water-cooling feed pipe (10) and water-cooling return pipe (11) are connected to the water inlet and water outlet of water-cooling coil pipe (9) respectively, base (12) are arranged at the bottom of box body (1), heat release sleeve (13) are arranged in the interior of box body (1), vertical sleeve (13) are arranged in the corresponding vertical direction of inner channel (13) and are arranged in the vertical direction of inner sleeve (14), the heat removal channel is characterized in that a first heat radiation fan (16) is fixedly arranged in the bottom end of the heat removal channel (15), a mounting seat (17) is arranged at the bottom of the sleeve (13), the base (12) is connected with the mounting seat (17) through a locking bolt (18), a first nut (19) for locking a mounting part of the high-voltage switch cabinet is arranged on the locking bolt (18), a second nut (20) for locking the mounting seat (17) is arranged at the end part of the locking bolt (18), and the mounting seat (17) is clamped between the first nut (19) and the second nut (20).
2. A contact box according to claim 1, characterized in that: the water cooling coil pipe (9) spirally ascends to the peripheral position of the outer opening (7) along the inner part of the inner wall of the box body (1).
3. A contact box according to claim 1, characterized in that: the diameter of the outer opening (7) is larger than that of the vent hole (6), and a filter screen is arranged at the bottom end of the outer opening (7).
4. A contact box according to claim 1, characterized in that: an umbrella skirt (21) is arranged on the outer wall of the box body (1).
5. A contact box according to claim 1, characterized in that: and a shielding sleeve (22) is arranged on the inner wall of the box body (1) corresponding to the periphery of the fixed contact (4).
6. A high voltage switchgear to which the contact box is mounted as claimed in claim 1, wherein: the high-voltage switch cabinet comprises a cabinet body (23), baffle (24) for installing a contact box are arranged in the cabinet body (23), a base (12) is installed on the baffle (24) through a locking bolt (18) and locked through a first nut (19), a plug-in mounting hole matched with a sleeve (13) is formed in the baffle (24), a bus chamber (25) and a handcart chamber (26) are respectively arranged on the left side and the right side of the baffle (24) corresponding to the inside of the cabinet body (23), a bus sleeve is arranged in the bus chamber (25), a main bus (27) is arranged in the bus sleeve, the main bus (27) is connected with a busbar (5) through a branch bus (28), a sliding handcart (29) is arranged in the handcart chamber (26), a circuit breaker (30) is installed on the sliding handcart (29), the circuit breaker (30) is connected with a static contact (4) through a pole contact assembly (31), and the sliding handcart (29) drives the pole contact assembly (30) to be separated from the static contact assembly (4) and the inner wall (32) of a second fan is fixedly arranged in the interior of the fan.
7. A high voltage switchgear to which the contact box is mounted as claimed in claim 6, wherein: the outer wall of the cabinet body (23) is coated with an epoxy resin coating.
8. A high voltage switchgear to which the contact box is mounted as claimed in claim 6, wherein: the side wall of the cabinet body (23) corresponding to the bus chamber (25) is provided with an air inlet, the side wall of the cabinet body (23) corresponding to the handcart chamber (26) is provided with an air outlet, and the air inlet, the second heat dissipation fan (32) and the air outlet form a heat dissipation channel.
9. A high voltage switchgear to which the contact box is mounted as claimed in claim 6, wherein: and a positioning groove for positioning the base (12) is formed in the partition plate (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110890159.5A CN113612148B (en) | 2021-08-04 | 2021-08-04 | Contact box and high-voltage switch cabinet provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110890159.5A CN113612148B (en) | 2021-08-04 | 2021-08-04 | Contact box and high-voltage switch cabinet provided with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113612148A CN113612148A (en) | 2021-11-05 |
| CN113612148B true CN113612148B (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110890159.5A Active CN113612148B (en) | 2021-08-04 | 2021-08-04 | Contact box and high-voltage switch cabinet provided with same |
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| Country | Link |
|---|---|
| CN (1) | CN113612148B (en) |
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| CN211958548U (en) * | 2020-04-30 | 2020-11-17 | 卡雷迪电气（常州）有限公司 | High-current medium-voltage switch cabinet structure with high heat dissipation performance |
| CN212744665U (en) * | 2020-06-09 | 2021-03-19 | 山东一标紧固件有限公司 | Self-locking check bolt |
| CN213782491U (en) * | 2020-11-18 | 2021-07-23 | 浙江雷安电气有限公司 | Contact box |
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| CN113612148A (en) | 2021-11-05 |
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Effective date of registration: 20230918 Address after: 062550 Xinhui Road, Renqiu City, Cangzhou City, Hebei Province Applicant after: HEBEI HUANENGYUAN ELECTRIC POWER EQUIPMENT Co.,Ltd. Address before: 212000 No. 9, yangtanggang, Jurong Economic Development Zone, Zhenjiang City, Jiangsu Province Applicant before: Jurong Huarong Electric Appliance Co.,Ltd. |
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