CN104332930A - Cable trench cover plate capable of monitoring fire disasters and automatically extinguishing fire - Google Patents
Cable trench cover plate capable of monitoring fire disasters and automatically extinguishing fire Download PDFInfo
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- CN104332930A CN104332930A CN201410641297.XA CN201410641297A CN104332930A CN 104332930 A CN104332930 A CN 104332930A CN 201410641297 A CN201410641297 A CN 201410641297A CN 104332930 A CN104332930 A CN 104332930A
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Abstract
The invention provides a cable trench cover plate capable of monitoring fire disasters and automatically extinguishing a fire. The cable trench cover plate capable of monitoring the fire disasters and automatically extinguishing the fire comprises a cable trench cover plate body and a plurality of devices which are installed on the lower portion of the cable trench cover plate body; the cable trench cover plate body is a rectangular plate, the lower portion is provided with an upward groove, and four corners are respectively provided with installation holes; the edge of the groove is provided with a trunking; the trunking is provided with a trunking installation hole and is connected with a cable outlet waterproof casing pipe; the devices comprise a gas detector, a linear infrared beam sensor, a temperature and humidity sensor, a smoke detector, a hanging type dry powder extinguisher, an audible and visual alarm, a data processing module and a power source device which are fixed inside the cable trench cover plate body. The cable trench cover plate capable of monitoring the fire disasters and automatically extinguishing the fire has the advantages of forming into a fire protecting device which integrating fire disaster automatic detection, alarm and fire extinguishment due to the fact that fire disaster monitoring, alarm and automatic fire extinguishment are achieved through the cable trench cover plate, being large in using amount and wide in range and powerfully improving the fire disaster prevention and fire protection effects of a transformer substation and a large amount of power transmission line cable trenches.
Description
Technical field
The present invention relates to fire-fighting equipment, particularly a kind of cable channel cover plate of monitoring fire and self-extinguishing.
Background technology
The electric wire use amount being distributed widely in the links such as generating, transmission of electricity, distribution is huge, and in electric power system electrical fire, the electric wire fire caused on fire accounts for 40%, and in civil electrical fire, the electric wire fire caused on fire accounts for 70%.Cable trough is that cable is concentrated and laid maximum places, be widely used in transformer station and a large amount of civilian installation, its fire risk is very large: the cable in ditch is the cable of band outer insulation jacket, the main component of outer insulation jacket be high polymer as plastics, rubber and rubber, the cable of some special purpose also has many additives; Cable generally adopts built on stilts cluster laying, and residing environment is mostly poor, operation maintenance difficulty; Add that the surveillance and control measure of cable running safety is more single, day and night can not monitor within the scope of all fronts, therefore to accident or the hidden dangers in its running such as cable breaking out of fires, can not control timely and effectively, the probability of breaking out of fire is very high; Meanwhile, cable trough is general local narrow and small, once there is cable detonation in cable trough, even if power-off, the intensity of a fire is also difficult to control, and the intensity of a fire can be prolonged combustion very soon along Cable Group and be expanded, existing extinguisher is often difficult to abundant input, the intensity of a fire can not be checked and also put out in short-term among a small circle.
Transformer station is the assembly place of transmission and disttrbution in electric power system, play voltage of transformation, acceptance and distribution electric energy, control flow of power to adjustment voltage.The transformer station that significance level is very high, all arranges fire automatic detection warning within its cable floor, control room, cable shaft etc., and arranges automatic fire-extingishing fire device according to fire-fighting respective rules.But cable troughs a large amount of in standing, and also have a large amount of cable troughs in transmission line, all do not have effective fire fighting monitoring and fire extinguishing to arrange.In addition, the PVC plastic cable below domestic 10kV electric pressure is widely used, and its defect is easy aging, easy firing.Particularly common plastics cable not only easily catches fire; and the HCl gas produced to be permeated electric device indoor by gap, hole; wet gas forms watery hydrochloric acid and is attached on each devices such as electric equipment, power plate, control and protection screen; and form one deck conducting film; the insulation property of serious reduction equipment and connection circuit, still affect safe operation after fire is extinguished.Even if adopt insulation cleaning agent cleaning performance also not good, form secondary harm.High temperature before combustion can make insulating barrier, rubber sheath produces a large amount of CO because of pyrolysis, if cable trough is disposed in the interior, then can damage personnel.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, provide a kind of and collect auto fire-detection, warning and fire extinguishing fire plant integrally, with the cable channel cover plate of the monitored fire and self-extinguishing that improve cable trough fire prevention and fire-fighting effect.
For achieving the above object, a kind of cable channel cover plate of monitoring fire and self-extinguishing provided by the invention, comprise cable channel cover plate body and be arranged on some equipment of described cable channel cover plate body lower part, described cable channel cover plate body is a rectangular slab, bottom is provided with groove upwards, its corner place is respectively equipped with installing hole, the edge of described groove is provided with wire casing, described wire casing is provided with the some wire casing installing holes be connected with described cable channel cover plate body, and described wire casing is connected with outlet water string, described equipment comprises the gas detector be fixed in described cable channel cover plate body recess, linear infrared beam sensor, Temperature Humidity Sensor, heat detector, smoke detector, suspension type powder fire extinguisher, audible-visual annunciator and data processing module and power-supply device, described suspension type powder fire extinguisher is provided with temperature sensing glass ball starting drive, described gas detector, linear infrared beam sensor, Temperature Humidity Sensor, heat detector, smoke detector, suspension type powder fire extinguisher and audible-visual annunciator are connected with described data processing module electricity respectively, described Temperature Humidity Sensor, gas detector, heat detector, smoke detector, the signal of linear infrared beam sensor collection exports described data processing module to, described data processing module output switching signal is to described suspension type powder fire extinguisher and audible-visual annunciator.
The present invention can monitor the cable channel cover plate of fire and self-extinguishing, wherein said power-supply device comprises wind-driven generator, solar panel, storage battery, wind/light complementation controller and AC220V stand-by power supply, described wind-driven generator, solar panel, storage battery are connected with wind/light complementation controller respectively, and described wind/light complementation controller and AC220V stand-by power supply provide DC24V power supply for each equipment.
The present invention can monitor the cable channel cover plate of fire and self-extinguishing, and wherein said gas detector comprises HCL, CO two kinds of electrochemical gas sensors of certainty of measurement 1ppm level.
The present invention can monitor the cable channel cover plate of fire and self-extinguishing, and wherein said suspension type powder fire extinguisher has explosion type and electric-controlled type two kinds starts temperature sensing glass ball starting drive.
The present invention can monitor the cable channel cover plate of fire and self-extinguishing, and wherein said data processing module is provided with RS485 interface to host computer or external fire alarming and control device signal transmission and radio transmitting device.
The present invention can monitor the advantage of the cable channel cover plate of fire and self-extinguishing and good effect is: owing to have employed cable channel cover plate body and being arranged on some equipment of cable channel cover plate body lower part, cable channel cover plate self is utilized to carry out fire monitoring, warning and self-extinguishing, constitute collection auto fire-detection, report to the police and fire extinguishing fire plant integrally, its use has a large capacity and a wide range, and effectively improves fire prevention and the fire-fighting effect of transformer station and a large amount of power line cables ditch.
Be described in detail with reference to accompanying drawing below in conjunction with embodiment.
Accompanying drawing explanation
Fig. 1 is the vertical view of cable channel cover plate body;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is cable channel cover plate equipment fitting arrangement;
Fig. 4 is the structure chart of power-supply device;
Fig. 5 is the winding diagram of data processing module.
Embodiment
The cable channel cover plate that the present invention can monitor fire and self-extinguishing comprises cable channel cover plate body and is arranged on some equipment of cable channel cover plate body lower part.Wherein:
See figures.1.and.2, cable channel cover plate body is a rectangular slab, and bottom is provided with groove upwards, its corner place is respectively equipped with installing hole 1, the edge of groove is provided with wire casing 2, and wire casing 2 is provided with the some wire casing installing holes 3 be connected with cable channel cover plate body, and wire casing 2 is connected with outlet water string 4.4 installing holes 1 are for being fixed on existing cement or plastic cover plate by cable channel cover plate body, wire casing 2 is for unifying outlet by the electrical wiring of each detecting element, play covering and rainproof effect, wire casing installing hole 3 is for being fixed on cable channel cover plate body by wire casing, and outlet water string 4 is for the waterproof to electric outlet.
After cable channel cover plate is installed, be fixed on each detecting element of cable channel cover plate body lower part, audible-visual annunciator, suspension type powder fire extinguisher, data processing module be all placed in cable trough.
With reference to Fig. 3, equipment comprises the gas detector 24 be fixed in cable channel cover plate body recess, linear infrared beam sensor 28, Temperature Humidity Sensor 20, heat detector 21,22, smoke detector 27-1,27-2, suspension type powder fire extinguisher 25, audible-visual annunciator 23 and data processing module 26 and power-supply device.
Wherein gas detector 24 comprises HCL, CO two kinds of electrochemical gas sensors of certainty of measurement 1ppm level, carries out highly sensitive detection for the representative gases product produced cable incipient fire.
Linear infrared light beam smoke-temperature sensing detector 28 is made up of reflector and receiver, adopts the infrared ray dim light mode do not affected by cigarette, look to work.General paired use.A branch of infrared beam determining intensity launched by reflector, and receiver gathers infrared beam, amplify, export after analyzing and processing.When smog enters detecting area, light beam be blocked receiver is received infrared light intensity reduce.
Humiture detector 20 is for the temperature in exploration cable ditch and relative humidity.
Heat detector 21,22 is for the temperature in exploration cable ditch.
Smoke detector 27-1,27-2 are used for the smog in exploration cable ditch.
Audible-visual annunciator 23, for sound and light alarm.
Suspension type powder fire extinguisher 25 is provided with explosion type and electric-controlled type two kinds starts temperature sensing glass ball starting drive.
Gas detector 24, linear infrared beam sensor 28, Temperature Humidity Sensor 20, heat detector 21,22, smoke detector 27-1,27-2, suspension type powder fire extinguisher 25 and audible-visual annunciator 23 are connected with data processing module 26 electricity respectively, Temperature Humidity Sensor 21,22, gas detector 24, heat detector 21,22, smoke detector 27-1,27-2, the signal that linear infrared beam sensor 28 gathers exports data processing module 26 to, and data processing module 26 output switching signal is to suspension type powder fire extinguisher 25 and audible-visual annunciator 23.
With reference to Fig. 5, data processing module is arranged in a regulator cubicle.Data processing module for gather and process each detector and gather signal, the low electric quantity signal of power-supply device and the startup of interlock thereof are for electric power supply signal, sound and light alarm signal and drive suspension type powder fire extinguisher signal.Data processing module has six groups of on-off model inputs: 2 smoke detectors 27-1,27-2,2 heat detectors 21,22, the signal that linear infrared beam sensor 28 and low electricity are reported to the police, 2 analog quantity 4-20ma signal inputs: the signal of Temperature Humidity Sensor 20 and gas detector 24; Three groups of switching signals export: connect audible-visual annunciator, open the signal of standby power supply and driving suspension type powder fire extinguisher.
Data processing module 26 is provided with RS485 interface to host computer or external fire alarming and control device signal transmission and radio transmitting device.The RS485 communication interface that data processing module 26 carries is convenient to transfer of data to independent external fire alarming and control device.Possessing the fire alarming and control device of the functions such as supervision, warning, coordinated signals, is matured product, can address, to determine source and the position of alarm signal accessed warning and fire-fighting signal.Meet GB4717-2005 " fire alarm control unit ", GB16806-2006 " fire-fighting linkage control system " requirement.
Data processing module 26 carries wireless transmission function, can by signal by being wirelessly transmitted to independent external host computer.
With reference to Fig. 4, power-supply device comprises wind-driven generator, solar panel, storage battery, wind/light complementation controller and AC220V stand-by power supply.Wind-driven generator and solar panel outdoor open-air are installed, and wind/light complementation controller, stand-by power supply, storage battery are arranged in unified regulator cubicle.Wherein wind-driven generator, solar panel, storage battery are connected with wind/light complementation controller respectively, and wind/light complementation controller and AC220V stand-by power supply provide DC24V power supply for each equipment.
The following describes the use of the cable channel cover plate of fire monitoring of the present invention and self-extinguishing.
1 cover plate is arranged
Cable trough is mainly distributed in outdoor, and the cable trough in transformer station is also distributed in 10kV switch gear room, GIS is indoor and indoor electric vessel, arc suppression coil room etc.Its space relative closure but blow-by, belong to unattended region but region is long and narrow.
This cover plate need not lay on cable trough comprehensively, need only be arranged in as upper/lower positions: the position that cable trough corner, cable joint place and needs are paid close attention to.Being arranged in cable joint place, because cable end is normally made by hand at the scene, by field condition restriction and the impact of making dispersiveness by hand, is the weak link of cable insulation, so strengthen supervision.The cable of cable trough corner is easily pulled when laying, and is easily generated heat at this place, so strengthen supervision.
It is to be noted that have no occluder between two cover plates Linear infrared beam sensor need be considered when arranging.
2 Real-Time Monitorings
Be arranged on the detecting elements such as the gas detector on cable channel cover plate body, linear infrared beam sensor, Temperature Humidity Sensor, smoke detector, the signal detected is delivered to after data processing module 26 gathers, can by signal by being wirelessly transmitted to independent external host computer, or be transferred to independent external fire alarming and control device by RS485 interface, the situation in Real-Time Monitoring cable trough.Independent external fire alarming and control device can address the data that multiple cable channel cover plate transmits.
3 start fire extinguishing
Suspension type powder fire extinguisher, directly can be triggered by fire, or starts after receiving electrical control signal.
Nozzle pressing plate is withstood in temperature sensing glass ball upper end, the nominal operating temperature arranged, namely 57 DEG C of orange, 68 DEG C of redness, 79 DEG C of yellow, 93 DEG C or 107 DEG C of greens, 121 DEG C or 141 DEG C blue time expansion explosion, nozzle pressing plate be pollinated tank internal pressure promote come off and automatically open spray fire extinguishing agent, temperature sensing glass ball meets GB18428-2010 " automatic fire extinguishing system glass marble " requirement.
In the present embodiment, suspension type powder fire extinguisher is provided with electric-controlled type and starts temperature sensing glass ball, and suspension type powder fire extinguisher adopts the temperature sensing glass ball of electric-controlled type to start.After fire alarm control system confirms the condition of a fire, send fire extinguishing instruction to Fire extinguisher, the electronic starter power supply on extinguishing device is connected in Fire extinguisher action, glass marble is burst, nozzle ejection extinguishing chemical; Or temperature sensing glass ball is directly ignited in fire area, nozzle ejection extinguishing chemical.
If breaking out of fire, Temperature Humidity Sensor, smoke detector, heat detector 21,22, the signal such as linear infrared beam sensor and gas sensor exceedes setting threshold values, host computer or fire alarming and control device display alarm information immediately, on-the-spot sound and light alarm also starts suspension type powder fire extinguisher: when taking to be transferred to host computer mode, and the action of suspension type powder fire extinguisher relies on its glass marble of naked light explosion in cable trough and starts; When taking to be transferred to independent external fire alarming and control device mode by RS485 interface, the action of suspension type powder fire extinguisher relies on its glass marble of naked light explosion in cable trough and directly triggers, or reception is started by the signal of fire alarming and control device.
During 4 low electricity, standby electricity starts
If battery goes wrong or continuous overcast and rainy calm weather causes battery capacity not enough, when exceeding the battery capacity of wind/light complementation controller setting, wind/light complementation controller sends electricity low signal and inputs to data processing module 26, data processing module 26 exports control contactor KM2, opens backup power supply system and works on.
Embodiment recited above is only be described the preferred embodiment of the present invention; not the spirit and scope of the present invention are limited; do not departing under design prerequisite of the present invention; the various modification that in this area, common engineers and technicians make technical scheme of the present invention and improvement; protection scope of the present invention all should be fallen into; the technology contents of request protection of the present invention, all records in detail in the claims.
Claims (5)
1. can monitor the cable channel cover plate of fire and self-extinguishing for one kind, comprise cable channel cover plate body and be arranged on some equipment of described cable channel cover plate body lower part, it is characterized in that: described cable channel cover plate body is a rectangular slab, bottom is provided with groove upwards, its corner place is respectively equipped with installing hole (1), the edge of described groove is provided with wire casing (2), described wire casing (2) is provided with the some wire casing installing holes (3) be connected with described cable channel cover plate body, and described wire casing (2) is connected with outlet water string (4), described equipment comprises the gas detector (24) be fixed in described cable channel cover plate body recess, linear infrared beam sensor (28), Temperature Humidity Sensor (20), heat detector (21, 22), smoke detector (27-1, 27-2), suspension type powder fire extinguisher (25), audible-visual annunciator (23) and data processing module (26) and power-supply device, described suspension type powder fire extinguisher (25) is provided with temperature sensing glass ball starting drive, described gas detector (24), linear infrared beam sensor (28), Temperature Humidity Sensor (20), heat detector (21, 22), smoke detector (27-1, 27-2), suspension type powder fire extinguisher (25) and audible-visual annunciator (23) are connected with described data processing module (26) electricity respectively, described Temperature Humidity Sensor (20), heat detector (21, 22), gas detector (24), smoke detector (27-1, 27-2), the signal that linear infrared beam sensor (28) gathers exports described data processing module (26) to, and described data processing module (26) output switching signal is to described suspension type powder fire extinguisher (25) and audible-visual annunciator (23).
2. cable channel cover plate of monitoring fire and self-extinguishing according to claim 1, it is characterized in that: wherein said power-supply device comprises wind-driven generator, solar panel, storage battery, wind/light complementation controller and AC220V stand-by power supply, described wind-driven generator, solar panel, storage battery are connected with wind/light complementation controller respectively, and described wind/light complementation controller and AC220V stand-by power supply provide DC24V power supply for each equipment.
3. cable channel cover plate of monitoring fire and self-extinguishing according to claim 1 and 2, is characterized in that: wherein said gas detector (24) comprises HCL, CO two kinds of electrochemical gas sensors of certainty of measurement 1ppm level.
4. cable channel cover plate of monitoring fire and self-extinguishing according to claim 3, is characterized in that: wherein said suspension type powder fire extinguisher (25) has explosion type and electric-controlled type two kinds starts temperature sensing glass ball starting drive.
5. cable channel cover plate of monitoring fire and self-extinguishing according to claim 4, is characterized in that: wherein said data processing module (26) is provided with RS485 interface to host computer or external fire alarming and control device signal transmission and radio transmitting device.
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| CN106020061A (en) * | 2016-07-22 | 2016-10-12 | 国网河南禹州市供电公司 | Substation cable trench monitoring and alarming system |
| CN106057053A (en) * | 2016-07-19 | 2016-10-26 | 国网安徽省电力公司电力科学研究院 | Cable duct fire test and fire fighting device performance testing platform |
| CN106099821A (en) * | 2016-08-09 | 2016-11-09 | 深圳市国电投资有限公司 | A kind of Intelligent fire-fighting integrated cover plate and monitoring, fire-extinguishing integrated system |
| CN106504459A (en) * | 2016-10-31 | 2017-03-15 | 国网山东省电力公司济南供电公司 | A kind of unmanned communications equipment room fire early-warning system |
| CN106887106A (en) * | 2017-04-21 | 2017-06-23 | 上海电机学院 | A kind of SCM Based wireless fire disaster alarm system |
| CN107465164A (en) * | 2017-09-04 | 2017-12-12 | 深圳供电局有限公司 | Cable channel cover plate |
| CN107545694A (en) * | 2017-10-23 | 2018-01-05 | 国网安徽省电力公司安庆供电公司 | One kind is used for the early warning of cable duct interior fires and automation fireplug |
| CN107886671A (en) * | 2017-10-26 | 2018-04-06 | 国家电网公司 | A kind of gas recombination detector for cable fire |
| CN108767798A (en) * | 2018-07-05 | 2018-11-06 | 深圳供电局有限公司 | A kind of cable channel cover plate |
| CN109029750A (en) * | 2018-07-26 | 2018-12-18 | 上海盛高新能源有限公司 | A kind of high temperature resistant protecting against shock temperature detection plate |
| CN109341756A (en) * | 2018-09-12 | 2019-02-15 | 国网安徽省电力有限公司检修分公司 | Cable duct of substation environmental monitoring system |
| CN109813372A (en) * | 2019-01-29 | 2019-05-28 | 国网河南省电力公司周口供电公司 | A kind of underground cable joint monitoring station |
| CN110854784A (en) * | 2019-12-04 | 2020-02-28 | 国网山东省电力公司济南供电公司 | Cable trench cover plate with fire extinguishing function |
| CN111921133A (en) * | 2020-06-28 | 2020-11-13 | 郑州云启工业设备技术有限公司 | Fire disaster safety protection device for big data computer |
| CN112290501A (en) * | 2020-10-26 | 2021-01-29 | 北京思迈特科技有限公司 | Method for embedding sensing line in channel cover plate |
| CN112787296A (en) * | 2021-01-07 | 2021-05-11 | 安徽英乐能源互联网有限公司 | Transformer substation's cable pit is with synthesizing apron |
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| CN113972618A (en) * | 2021-10-29 | 2022-01-25 | 国网河南省电力公司桐柏县供电公司 | Be applied to improved generation fireproof cable trench of transformer substation |
| CN115228012A (en) * | 2022-05-30 | 2022-10-25 | 国网江苏省电力有限公司盐城供电分公司 | Transformer substation's cable pit is with warning firebreak device |
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| CN106057053A (en) * | 2016-07-19 | 2016-10-26 | 国网安徽省电力公司电力科学研究院 | Cable duct fire test and fire fighting device performance testing platform |
| CN106020061A (en) * | 2016-07-22 | 2016-10-12 | 国网河南禹州市供电公司 | Substation cable trench monitoring and alarming system |
| CN106099821A (en) * | 2016-08-09 | 2016-11-09 | 深圳市国电投资有限公司 | A kind of Intelligent fire-fighting integrated cover plate and monitoring, fire-extinguishing integrated system |
| CN106099821B (en) * | 2016-08-09 | 2018-02-16 | 深圳市国电投资有限公司 | A kind of Intelligent fire-fighting integrated cover plate and monitoring, fire-extinguishing integrated system |
| CN106504459A (en) * | 2016-10-31 | 2017-03-15 | 国网山东省电力公司济南供电公司 | A kind of unmanned communications equipment room fire early-warning system |
| CN106887106A (en) * | 2017-04-21 | 2017-06-23 | 上海电机学院 | A kind of SCM Based wireless fire disaster alarm system |
| CN107465164A (en) * | 2017-09-04 | 2017-12-12 | 深圳供电局有限公司 | Cable channel cover plate |
| CN107465164B (en) * | 2017-09-04 | 2023-08-04 | 深圳供电局有限公司 | Cable trench cover plate |
| CN107545694A (en) * | 2017-10-23 | 2018-01-05 | 国网安徽省电力公司安庆供电公司 | One kind is used for the early warning of cable duct interior fires and automation fireplug |
| CN107886671A (en) * | 2017-10-26 | 2018-04-06 | 国家电网公司 | A kind of gas recombination detector for cable fire |
| CN108767798A (en) * | 2018-07-05 | 2018-11-06 | 深圳供电局有限公司 | A kind of cable channel cover plate |
| CN109029750A (en) * | 2018-07-26 | 2018-12-18 | 上海盛高新能源有限公司 | A kind of high temperature resistant protecting against shock temperature detection plate |
| CN109341756A (en) * | 2018-09-12 | 2019-02-15 | 国网安徽省电力有限公司检修分公司 | Cable duct of substation environmental monitoring system |
| CN109813372A (en) * | 2019-01-29 | 2019-05-28 | 国网河南省电力公司周口供电公司 | A kind of underground cable joint monitoring station |
| CN110854784A (en) * | 2019-12-04 | 2020-02-28 | 国网山东省电力公司济南供电公司 | Cable trench cover plate with fire extinguishing function |
| CN111921133A (en) * | 2020-06-28 | 2020-11-13 | 郑州云启工业设备技术有限公司 | Fire disaster safety protection device for big data computer |
| CN111921133B (en) * | 2020-06-28 | 2021-11-16 | 安普科技有限公司 | Fire disaster safety protection device for big data computer |
| CN112290501A (en) * | 2020-10-26 | 2021-01-29 | 北京思迈特科技有限公司 | Method for embedding sensing line in channel cover plate |
| CN112290501B (en) * | 2020-10-26 | 2022-04-12 | 北京思迈特科技有限公司 | Method for embedding sensing line in channel cover plate |
| CN112787296A (en) * | 2021-01-07 | 2021-05-11 | 安徽英乐能源互联网有限公司 | Transformer substation's cable pit is with synthesizing apron |
| CN112787296B (en) * | 2021-01-07 | 2024-01-12 | 安徽英乐能源互联网有限公司 | Comprehensive cover plate for cable trench of transformer substation |
| CN113676703A (en) * | 2021-08-23 | 2021-11-19 | 湖北拓普源电力工程有限公司 | Visual intelligent inspection system for firewall cover plate |
| CN113972618A (en) * | 2021-10-29 | 2022-01-25 | 国网河南省电力公司桐柏县供电公司 | Be applied to improved generation fireproof cable trench of transformer substation |
| CN115228012A (en) * | 2022-05-30 | 2022-10-25 | 国网江苏省电力有限公司盐城供电分公司 | Transformer substation's cable pit is with warning firebreak device |
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