CN115154960A - Fire alarm device of transformer substation - Google Patents
Fire alarm device of transformer substation Download PDFInfo
- Publication number
- CN115154960A CN115154960A CN202210915547.9A CN202210915547A CN115154960A CN 115154960 A CN115154960 A CN 115154960A CN 202210915547 A CN202210915547 A CN 202210915547A CN 115154960 A CN115154960 A CN 115154960A
- Authority
- CN
- China
- Prior art keywords
- dry powder
- cylinder
- substation
- alarm device
- fire alarm
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Alarm Systems (AREA)
Abstract
The invention relates to the technical field of transformer substation safety facilities, and particularly discloses a transformer substation fire alarm device. It is including ability pivoted dry powder section of thick bamboo, the supporting straining bar of the end cover of dry powder section of thick bamboo lower extreme, the supporting locking device of straining bar, is equipped with plectane and connecting rod through interior otic placode in the dry powder section of thick bamboo, and locking device includes: the output end of the air cylinder is back to the air cylinder of the dry powder cylinder, the output end of the air cylinder is fixedly provided with a bolt, a connecting plate is sleeved on the bolt, and the connecting plate is respectively in threaded connection with nuts through the bolts on the two sides; the connecting plate is provided with a mandril towards the direction of the dry powder cylinder, and the end surface of the mandril is an inclined surface matched with the inclined groove. The dry powder cylinder is arranged, when a fire disaster occurs, the dry powder cylinder can be started to operate automatically while remotely reporting to a command center, the fire is extinguished, and the loss is reduced to the minimum. The cylinder that sets up simultaneously installs two kinds of modes, and these two kinds of modes can realize the reassembly of this invention through rotating mounting panel and cylinder to reuse, resources are saved.
Description
Technical Field
The invention relates to the technical field of transformer substation safety facilities, in particular to a transformer substation fire alarm device.
Background
The transformer substation is a place for converting voltage and current, receiving electric energy and distributing electric energy in an electric power system. The substation in the power plant is a step-up substation, which is used for boosting the electric energy generated by the generator and then transmitting the electric energy to a high-voltage power grid. The electrical equipment in the transformer substation is divided into primary equipment and secondary equipment, wherein the primary equipment refers to equipment for directly producing, transporting, distributing and using electric energy and mainly comprises a transformer, a high-voltage circuit breaker, an isolating switch, a bus, a lightning arrester, a capacitor, a reactor and the like; the secondary equipment of the transformer substation is equipment for measuring, monitoring, controlling and protecting the operation conditions of primary equipment and a system, and mainly comprises a relay protection device, a measurement and control device, a metering device, an automatic system and direct current equipment for providing power for the equipment.
In the operation process of a transformer substation, the transformer substation possibly causes fire disasters due to accidental conditions such as short circuit of lines, an automatic fire alarm system is generally installed in the conventional transformer substation, but only the automatic fire alarm system monitors whether the fire disasters occur and remotely transmits the fire disasters to a power supply center, fire extinguishment and self rescue at the first time of the fire disasters cannot be realized, the fire disasters cannot be controlled at the first time, after the monitoring center finds that the fire disasters are controlled and extinguished, serious consequences caused by the fire disastrous effects are avoided, and the damage is often serious.
Disclosure of Invention
The invention provides a transformer substation fire alarm device capable of extinguishing fire and saving self in order to make up for the defects of the prior art.
The invention is realized by the following technical scheme:
a fire alarm device of a transformer substation comprises a fire monitoring device and is characterized by further comprising a PLC control system and a mounting plate arranged on the top surface in the transformer substation, wherein a dry powder cylinder which can only rotate axially is arranged on the lower surface of the mounting plate, and the dry powder cylinder is driven to rotate by a motor; the inner wall and the outer wall of the dry powder barrel are respectively provided with a circle of inner ear plates and a circle of at least three outer ear plates, the embryo at the lower end of the dry powder barrel is provided with an end cover, the end cover is provided with a sealing ring, the end cover is upwards provided with a plurality of tensioning rods capable of penetrating through the outer ear plates, the upper end of each tensioning rod is provided with an inclined groove, and the inclined groove is matched with a locking device; each inner ear plate is matched with a connecting rod, a plug is arranged at the upper end of each connecting rod, the lower end of each connecting rod is fixed on a circular plate, a plurality of blanking holes are formed in the circular plate, and the length of each connecting rod is greater than the distance from the lower surface of the inner ear plate to the lower end of the dry powder barrel; the fire monitoring device, the motor and the air cylinder are respectively electrically connected with the PLC control system.
Be equipped with a plurality of horizontal railings between the adjacent connecting rod, horizontal railing is located the latter half of connecting rod.
When the connecting rod is completely positioned in the dry powder cylinder, the inner ear plate is positioned in the middle of the connecting rod, and the length of the connecting rod is 30-40 cm.
And a horn cylinder is arranged at the lower end of the blanking hole.
The locking device includes: the output end of the air cylinder is back to the air cylinder of the dry powder cylinder, the output end of the air cylinder is fixedly provided with a bolt, a connecting plate is sleeved on the bolt, and the connecting plate is respectively in threaded connection with nuts through the bolts on the two sides; the connecting plate is provided with a push rod towards the direction of the dry powder barrel, and the end face of the push rod is an inclined plane matched with the inclined groove.
The cylinder is provided with a guide cylinder which is sleeved on the ejector rod.
The mounting plate shaft is rotatably mounted on the top surface in the transformer substation, a locking groove is formed in the side surface of the mounting plate, and a spring locking pin is arranged on the top surface in the transformer substation; the cylinder is installed on the mounting plate.
The mounting plate shaft is rotatably mounted on the top surface in the transformer substation, a locking groove is formed in the side surface of the mounting plate, and a spring locking pin is arranged on the top surface in the transformer substation; be equipped with round annular spout around the mounting panel, be equipped with the slider in the annular spout, the cylinder is fixed on the slider.
And the adjacent cylinders are connected through arc-shaped rods.
The invention has the beneficial effects that:
the dry powder barrel is arranged, when a fire disaster occurs, the air cylinder is started to bring the ejector rod away from the inclined groove while remotely reporting to a command center, the connecting rod is out of limit, falls and falls off under the action of self gravity and the pressure in the dry powder barrel, meanwhile, the circular plate in the dry powder barrel falls down, but is hung on the dry powder barrel under the most use of the plug, meanwhile, the motor is started to drive the dry powder barrel to rotate, the dry powder in the dry powder barrel rotates and falls down between the horn barrel and the transverse railing along with the rotation of the dry powder barrel, the fire is extinguished, and the loss is reduced to the lowest. The cylinder that sets up simultaneously installs two kinds of modes, and these two kinds of modes can realize the reassembly of this invention through rotating mounting panel and cylinder to reuse, resources are saved.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of another embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 4 is an enlarged view of the structure at B in FIG. 1;
fig. 5 is an enlarged schematic view of the structure at C in fig. 1.
In the figure, 1 transformer substation, 2 top surfaces, 3 mounting plates, 4 dry powder cylinders, 5 locking grooves, 6 spring locking pins, 7 motors, 8 inner ear plates, 9 connecting rods, 10 plugs, 11 round plates, 12 blanking holes, 13 trumpet cylinders, 14 transverse railings, 15 end covers, 16 sealing rings, 17 outer ear plates, 18 tensioning rods, 19 inclined grooves, 20 air cylinders, 21 annular sliding grooves, 22 sliding blocks, 23 arc-shaped rods, 24 bolts, 25 nuts, 26 connecting plates, 27 ejector rods, 28 guide cylinders, 29 inclined surfaces and 30 protection plates.
Detailed Description
The drawings illustrate specific embodiments of the invention. As shown in fig. 1 to 5, the substation fire alarm device has the functions of the existing fire alarm device, such as a fire monitoring device, a smoke alarm device, a remote alarm device, and the like, and is additionally provided with the following fire extinguishing structure:
the fire extinguishing device mainly controls the fire monitoring device, a cylinder 20 and a motor 7, wherein a mounting plate 3 is rotatably mounted on a top surface 2 in a transformer substation 1, the mounting plate 3 is circular, a dry powder barrel 4 is rotatably mounted on the lower surface of the mounting plate 3, the shaft rotation mounting means that the mounted structure can only rotate on the plane where the structure is located but cannot move along the axis of the mounting plate, a locking groove 5 is formed in the side surface of the mounting plate 3, a spring locking pin 6 is mounted on the top surface 2 in the transformer substation 1 beside the mounting plate 3, the spring locking pin 6 can be pulled manually, and the spring locking pin 6 can be inserted into the locking groove 5 to fix the mounting plate 3 so that the mounting plate cannot rotate.
The lower surface of the mounting plate 3 is provided with a motor 7, the motor 7 is in transmission connection with the dry powder cylinder 4 through a gear and a chain, and the dry powder cylinder 4 is driven to rotate by the motor 7; a circle of inner ear plates 8 are arranged in a dry powder barrel 4, a connecting rod 9 penetrates through each inner ear plate 8, the upper end of each connecting rod 9 is a plug 10 to prevent the connecting rod 9 from falling off from the inner ear plates 8, the lower ends of the connecting rods 9 are welded on a circular plate 11, the diameter of the circular plate 11 is smaller than the inner diameter of the dry powder barrel 4, namely, the circular plate 11 can smoothly enter the dry powder barrel 4, the length of each connecting rod 9 is 30-40 cm, when the connecting rods 9 are all positioned in the dry powder barrel 4, namely, the dry powder barrel 4 is in a standby state, the inner ear plates 8 are positioned in the middle of the connecting rods 9, and when the connecting rods 9 are in a free state, the exposed parts of the connecting rods 9 are 15-20 cm. A plurality of blanking holes 12 are formed in the circular plate 11, horn tubes 13 are mounted on the lower surfaces of the blanking holes 12, two adjacent connecting rods 9 are connected through a plurality of transverse railings 14, and the transverse railings 14 are located below the inner ear plates 8; the size of the blanking hole 12 and the distance between two adjacent transverse rails 14 cannot affect the spraying of the dry powder. Transverse rails 14 are also preferably arcuate.
An end cover 15 is arranged at the lower end of the dry powder cylinder 4, a sealing ring 16 is arranged on the end cover 15, and the circular plate 11 is sealed in the dry powder cylinder 4 after the end cover 15 is combined with the dry powder cylinder 4; four outer ear plates 17 are welded on the outer side of the dry powder barrel 4, or three, five and the like outer ear plates 17, four tightening rods 18 are welded on the end cover 15, the tightening rods 18 penetrate the outer ear plates 17 upwards and are provided with inclined grooves 19 as shown in fig. 4 at the positions of the outer ear plates 17, and each inclined groove 19 is provided with a locking device which lifts the tightening rod 18 to the limit upwards through the inclined groove 19, so that the end cover 15 is sealed with the dry powder barrel 4; the locking device is structured as follows:
the air cylinder 20 can be mounted in two ways, namely, one way is mounted on the mounting plate 3 and rotates along with the mounting plate 3; one method is that a ring of annular sliding groove 21 is arranged on the inner top surface 2 of the transformer substation 1, the mounting plate 3 and the spring lock pin 6 are all surrounded by the annular sliding groove 21, then four sliding blocks 22 are arranged in the annular sliding groove 21, one sliding block 22 is fixedly provided with one air cylinder 20, and two adjacent air cylinders 20 are connected through an arc-shaped rod 23, so that linkage is formed among the air cylinders 20; the output end of the air cylinder 20 is back to the dry powder barrel 4, then a bolt 24 is fixed at the output end of the air cylinder 20, two nuts 25 are matched on the bolt 24, a connecting plate 26 is sleeved on the bolt 24 between the two nuts 25, an ejector rod 27 is welded on the connecting plate 26 in the direction of the dry powder barrel 4, a guide barrel 28 is welded on the air cylinder 20, after the ejector rod 27 penetrates through the guide barrel 28, the end surface of the ejector rod is an inclined surface 29, and in the process that the inclined surface 29 gradually enters the inclined groove 19, the tension rod 18 is gradually lifted upwards, and the end cover 15 is sealed with the dry powder barrel 4.
In addition, a protection plate 30 is provided, the protection plate 30 is installed on the inner wall of the substation 1, the protection plate 30 is perforated, the dry powder barrel 4 penetrates through the hole in the protection plate 30 and can rotate, and the cylinder 20, the motor 7 and the like are all enclosed between the protection plate 30 and the inner top surface 2 of the substation 1 by the protection plate 30. The device for monitoring fire should be installed under the protection plate 30.
The working process is as follows:
under normal conditions, the spring lock pin 6 is inserted into the lock groove 5 to fix the mounting plate 3 so that the mounting plate cannot rotate, and the lower surface of the ejector rod 27 is inserted into the inclined groove 19 to seal the dry powder barrel 4. After the fire happens, the fire monitoring device reports to the control center remotely on the one hand, the PLC control system is transmitted to on the one hand, the PLC control system transmits signals to the air cylinder 20 and the motor 7, the output end of the air cylinder 20 extends out, the inclined plane 29 driving the ejector rod 27 leaves the inclined groove 19, the connecting rod 9 loses constraint, under the action of the pressure in the dry powder cylinder 4 and the self gravity of the end cover 15 and the tensioning rod 18, the tensioning rod 18 and the end cover 15 are separated from the outer ear plate 17 downwards and fall freely, meanwhile, the circular plate 11 sealed in the dry powder cylinder 4 also falls down until the plug 10 receives the limitation of the inner ear plate 8, at the moment, dry powder is sprayed out from the gap between the horn cylinder 13 and the two arc-shaped rods 23 under the action of pressure, meanwhile, the motor 7 is started, the dry powder cylinder 4 rotates, the circular plate 11 and the connecting rod 9 rotate along with the rotation, and the dry powder is sprayed out to all directions in a rotary mode, and the fire can be effectively eliminated.
After the fire is extinguished, the final cleaning and re-installation stage is entered, and the end cover 15 is installed firstly: manually releasing the spring lock pin 6, manually rotating the mounting plate 3, rotating the outer lug plate 17 to an easy-to-mount position, and if the cylinder 20 is mounted on the mounting plate 3, then the cylinder 20 is also rotated to an easy-to-mount position, and if the cylinder 20 is mounted on the annular slide groove 21, the cylinder 20 is rotated to an easy-to-mount position, and the ejector rod 27 is aligned with the inclined groove 19; changing a new end cover 15, inserting the tensioning rod 18 into the outer ear plate 17, screwing the nut 25 on the outer side, ejecting the inclined plane 29 into the inclined groove 19, in the ejecting process, gradually lifting and pulling the tensioning rod 18 upwards, tightly ejecting, screwing the nut 25 on the inner side, clamping the connecting plate 26 by the inner nut 25 and the outer nut 25, forming sealing between the end cover 15 and the dry powder barrel 4 after all the cylinders 20 are installed, filling dry powder into the dry powder barrel 4 at the moment, and pressing to be in a standby state.
Other technical features than those described in the specification are known to those skilled in the art.
Claims (9)
1. A fire alarm device of a transformer substation comprises a fire monitoring device and is characterized by further comprising a PLC control system and a mounting plate (3) arranged on the top surface (2) in the transformer substation (1), wherein a dry powder cylinder (4) which can only rotate in a shaft is arranged on the lower surface of the mounting plate (3), and the dry powder cylinder (4) is driven to rotate by a motor (7); the inner wall and the outer wall of the dry powder barrel (4) are respectively provided with a circle of inner ear plates (8) and a circle of at least three outer ear plates (17), an end cover (15) is arranged at the lower end of the dry powder barrel (4), a sealing ring (16) is arranged on the end cover (15), a plurality of tensioning rods (18) capable of penetrating through the outer ear plates (17) are upwards arranged on the end cover (15), the upper ends of the tensioning rods (18) are arranged in inclined grooves (19), and the inclined grooves (19) are matched with locking devices; each inner ear plate (8) is matched with a connecting rod (9), a plug (10) is arranged at the upper end of each connecting rod (9), the lower end of each connecting rod (9) is fixed on a circular plate (11), a plurality of blanking holes (12) are formed in each circular plate (11), and the length of each connecting rod (9) is greater than the distance between the lower surface of each inner ear plate (8) and the lower end of each dry powder barrel (4); the fire monitoring device, the motor (7) and the cylinder (20) are respectively electrically connected with the PLC control system.
2. A substation fire alarm device according to claim 1, characterized in that a plurality of transverse railings (14) are provided between adjacent connecting rods (9), said transverse railings (14) being located at the lower half of the connecting rods (9).
3. A substation fire alarm device according to claim 2, characterized in that when the connecting rod (9) is fully located in the dry powder barrel (4), the inner ear plate (8) is located in the middle of the connecting rod (9), the length of the connecting rod (9) being 30-40 cm.
4. A substation fire alarm device according to claim 1, characterized in that a horn (13) is provided at the lower end of the blanking hole (12).
5. A substation fire alarm device according to claim 1, wherein the locking device comprises: the output end of the air cylinder (20) is back to the air cylinder (20) of the dry powder cylinder (4), a bolt (24) is fixedly arranged at the output end of the air cylinder (20), a connecting plate (26) is sleeved on the bolt (24), and the connecting plate (26) is respectively in threaded connection with a nut (25) through the bolts (24) at two sides; and the connecting plate (26) is provided with an ejector rod (27) towards the direction of the dry powder barrel (4), and the end surface of the ejector rod (27) is an inclined surface (29) matched with the inclined groove (19).
6. The substation fire alarm device according to claim 5, wherein a guide cylinder (28) is arranged on the cylinder (20), and the guide cylinder (28) is sleeved on the ejector rod () 27.
7. A substation fire alarm device according to claim 5, characterized in that the mounting plate (3) is pivotally mounted on the top surface (2) in the substation (1), the side surface of the mounting plate (3) is provided with a locking groove (5), and the top surface (2) in the substation (1) is provided with a spring locking pin (6); the cylinder (20) is mounted on the mounting plate (3).
8. A substation fire alarm device according to claim 5, characterized in that the mounting plate (3) is pivotally mounted on the top surface (2) in the substation (1), the side surface of the mounting plate (3) is provided with a locking groove (5), and the top surface (2) in the substation (1) is provided with a spring locking pin (6); be equipped with round annular spout (21) around mounting panel (3), be equipped with slider (22) in annular spout (21), cylinder (20) are fixed on slider (22).
9. A substation fire alarm device according to claim 5, characterized in that adjacent cylinders (20) are connected by an arc-shaped rod (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210915547.9A CN115154960A (en) | 2022-08-01 | 2022-08-01 | Fire alarm device of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210915547.9A CN115154960A (en) | 2022-08-01 | 2022-08-01 | Fire alarm device of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115154960A true CN115154960A (en) | 2022-10-11 |
Family
ID=83476831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210915547.9A Pending CN115154960A (en) | 2022-08-01 | 2022-08-01 | Fire alarm device of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115154960A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116271631A (en) * | 2023-05-18 | 2023-06-23 | 西安科齐电子科技有限责任公司 | Automatic fire extinguishing system in switch board based on thing networking is reported to police |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101308093B1 (en) * | 2012-08-10 | 2013-09-12 | 이영복 | Automatic fire extinguisher discharging the fire-extinguishing fluid to the fire place |
| CN106730497A (en) * | 2016-11-14 | 2017-05-31 | 严幼仙 | A kind of large data center computer room full-automatic dry powder extinguishing device |
| CN211962910U (en) * | 2019-09-27 | 2020-11-20 | 王谢林 | Dry powder fire extinguishing device for automatically extinguishing various fires in large area by innovative spring power |
| CN214912864U (en) * | 2021-04-29 | 2021-11-30 | 江苏迈克尔电子科技有限公司 | Electromechanical component safety fire control unit |
| CN215694840U (en) * | 2021-07-20 | 2022-02-01 | 大连天罡科技有限公司 | Safety interlocking box with protection function for electric dust removal |
-
2022
- 2022-08-01 CN CN202210915547.9A patent/CN115154960A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101308093B1 (en) * | 2012-08-10 | 2013-09-12 | 이영복 | Automatic fire extinguisher discharging the fire-extinguishing fluid to the fire place |
| CN106730497A (en) * | 2016-11-14 | 2017-05-31 | 严幼仙 | A kind of large data center computer room full-automatic dry powder extinguishing device |
| CN211962910U (en) * | 2019-09-27 | 2020-11-20 | 王谢林 | Dry powder fire extinguishing device for automatically extinguishing various fires in large area by innovative spring power |
| CN214912864U (en) * | 2021-04-29 | 2021-11-30 | 江苏迈克尔电子科技有限公司 | Electromechanical component safety fire control unit |
| CN215694840U (en) * | 2021-07-20 | 2022-02-01 | 大连天罡科技有限公司 | Safety interlocking box with protection function for electric dust removal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116271631A (en) * | 2023-05-18 | 2023-06-23 | 西安科齐电子科技有限责任公司 | Automatic fire extinguishing system in switch board based on thing networking is reported to police |
| CN116271631B (en) * | 2023-05-18 | 2023-09-12 | 河北新大长远电力科技股份有限公司 | Automatic fire extinguishing system in switch board based on thing networking is reported to police |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110783834B (en) | Distribution network overhead line real-time supervision equipment | |
| CN115154960A (en) | Fire alarm device of transformer substation | |
| CN217469279U (en) | Gaseous all insulation looped netowrk cubical switchboard of high leakproofness | |
| CN104333232B (en) | Mining explosion suppression type intelligent integrated power supply apparatus | |
| CN111564764A (en) | Box high-voltage substation with cable connection protection mechanism | |
| CN215371759U (en) | Electric power operation and maintenance monitoring device | |
| CN113488951A (en) | Lightning protection voltage limiting device for overhead line of power distribution network | |
| CN209896525U (en) | Self-healing 10KV high-voltage metering landing device | |
| CN202424088U (en) | Socket spanner special for charged installation of arrester in ground potential | |
| CN220692676U (en) | 35KV switch cabinet hand-held operation box | |
| CN105207105A (en) | High-voltage switch air box for outdoor compact intelligent transformer station | |
| CN110071437A (en) | A kind of switch cabinet body structure and switchgear | |
| CN212518146U (en) | Portable switch hanging device | |
| CN218976414U (en) | Video monitoring device for power transmission line | |
| CN214337221U (en) | Safety early warning device for switch cabinet | |
| CN117913700B (en) | Grounding device with anti-lock function | |
| CN116031113B (en) | Circuit breaker and wiring disassembling method thereof | |
| CN214478752U (en) | Circuit breaker power module with remote monitoring function | |
| CN214412008U (en) | Expander for live processing of GW20 type isolation switch fault | |
| CN213275793U (en) | Multi-index monitoring system of power system | |
| CN214793399U (en) | 110kV transformer substation cable layer water level monitoring device | |
| CN219717656U (en) | Outdoor high-voltage switch control cabinet | |
| CN215807460U (en) | Automatic intelligent inspection equipment for electric power inspection | |
| CN217240035U (en) | High-voltage power transformation cabinet with remote early warning structure | |
| CN217511024U (en) | Transformer substation overhauls with preventing that high falls into intelligent instrument with mistake income electrified interval |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |