CN115228012B - Alarm fireproof device for cable duct of transformer substation - Google Patents
Alarm fireproof device for cable duct of transformer substation Download PDFInfo
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- CN115228012B CN115228012B CN202210597582.0A CN202210597582A CN115228012B CN 115228012 B CN115228012 B CN 115228012B CN 202210597582 A CN202210597582 A CN 202210597582A CN 115228012 B CN115228012 B CN 115228012B
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- cable
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- 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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- Health & Medical Sciences (AREA)
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- Chemical & Material Sciences (AREA)
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- General Physics & Mathematics (AREA)
- Fire Alarms (AREA)
Abstract
The invention discloses an alarming fireproof device for a cable trench of a transformer substation, which comprises a cable trench structure placed on the ground, wherein a cover plate is arranged at the upper end of the cable trench structure, circuit fixing devices are arranged on the inner wall and the bottom of the inner side of the cable trench structure, circuit fixing ropes are arranged on the circuit fixing devices and used for fixedly installing a cable in the cable trench, an alarming device and a fire extinguishing mechanism are arranged in the cable trench, the alarming device is arranged on the inner side of the cover plate, and the fire extinguishing mechanism is arranged in the cable trench, wherein the alarming device is connected with the fire extinguishing mechanism, so that the reliability and the rapidness of fire detection and the fire extinguishing mechanism in the cable trench are improved.
Description
Technical Field
The invention belongs to the technical field of electric power, and relates to an alarm fireproof device for a cable trench of a transformer substation.
Background
The transformer substation is a place for converting voltage and current in a power system and receiving electric energy and distributing the electric energy, so that a large number of cable trenches are arranged in the transformer substation and are used for ensuring the burying safety and orderly arrangement of cables.
Because the environment that the cable pit was located is complicated for its surface insulating layer is easy ageing after the cable used for a long time, and because the existence of moisture can make the junction short circuit in the cable pit, make the temperature in the cable pit rise fast, and then lead to the emergence fire safety accident in the cable pit, the place that current cable pit had exposes in outside air for a long time, can make the air that flows appear in the cable pit, after the conflagration, the air that flows can influence the accuracy of smoke detection device in the cable pit, after leading to the conflagration serious, smoke detection device just takes place alarm signal, and just set up the fire prevention function in its inside in the current cable pit, and do not set up the automatic fire extinguishing function.
Based on the above, the invention provides an alarm fireproof device for a cable trench of a transformer substation.
Disclosure of Invention
In order to solve the problems, the alarm fireproof device for the cable duct of the transformer substation improves the reliability and the rapidity of fire detection and fire extinguishing mechanisms in the cable duct.
The utility model provides a transformer substation cable pit is with warning firebreak device, includes the cable pit structure of placing on ground, cable pit structure upper end is equipped with the apron, and the inboard inner wall and the bottom of cable pit structure are equipped with circuit fixing device, install circuit fixing rope on the circuit fixing device for with cable fixed mounting in the cable pit, be provided with alarm device and fire extinguishing mechanism in the cable pit, alarm device installs in the apron inboard, and fire extinguishing mechanism installs in the cable pit, and wherein alarm device is connected with fire extinguishing mechanism;
the alarm device comprises a gas receiving device, a controller and a gas detection sensor, wherein an air flow cavity is arranged in the gas receiving device, air inlet ends are arranged on two sides of the air flow cavity, air flow ends are arranged at the top of the air flow cavity, electromagnetic valves are arranged at the air inlet ends and the air flow ends, the electromagnetic valves are connected with a power supply, a timing device is arranged on the electromagnetic valves, the electromagnetic valves can be opened at regular time, air in a cable trench flows into the air flow cavity, the gas flow cavity is internally provided with the gas detection device, the gas detection device comprises a detection end and a signal transmission end, the detection end can detect smoke concentration in the air flow cavity, and the controller comprises a signal receiving end and the signal transmission end, wherein the signal receiving end is connected with the signal transmission end of the gas detection sensor, so that the controller can receive smoke concentration parameter values in the air in the gas detection sensor.
The fire extinguishing mechanism comprises a dry powder compression fire extinguisher and a dry powder distribution mechanism, wherein a spraying opening of the dry powder compression fire extinguisher is connected with the dry powder pipeline distribution mechanism, an electromagnetic proportional valve is arranged between the spraying opening of the dry powder compression fire extinguisher and the dry powder pipeline distribution mechanism, the electromagnetic proportional valve is connected with a controller of the alarm mechanism, the controller can control the operation of the electromagnetic proportional valve, a plurality of spraying holes are uniformly distributed at the bottom of the dry powder pipeline distribution mechanism, and dry powder can flow out from the spraying holes to reach the fire extinguishing position of a cable duct.
Further be provided with sprinkler on the spray hole of dry powder pipeline distribution mechanism, be provided with control mechanism on the sprinkler, be equipped with microcontroller, temperature detection sensor and electromagnetic mechanism in the control mechanism, wherein microcontroller inserts the power, and temperature detection sensor installs in sprinkler's the outside, can detect the temperature in the cable pit, judges that sprinkler place bottom is the fire point according to the temperature, and electromagnetic mechanism installs in sprinkler, can control sprinkler inside and switch on, microcontroller links to each other with temperature detection sensor and electromagnetic mechanism, makes microcontroller can detect the inside parameter value of temperature detection sensor to and control electromagnetic mechanism operation.
Further the temperature detection sensor includes the detection end, be provided with metal connecting portion on the detection end, this metal connecting portion is connected to the cable epidermis, makes temperature detection sensor can quick cable epidermis's temperature change condition.
Further be detachable connection between metal connecting portion and temperature detection sensor's the detection end, the metal connecting portion of being convenient for installs on temperature detection sensor's the detection end.
Further, the opening degree of the electromagnetic proportional valve can be controlled through the controller, so that the concentration of the dry powder compressed fire extinguisher flowing into the dry powder distribution mechanism is controlled, the dry powder utilization rate is highest, and the condition of dry powder waste in the fire extinguishing process is prevented.
Further the air flow cavity both sides are equipped with outside gas arc pipeline, and the solenoid valve of air flow cavity both sides is connected to this pipeline one side, and the air-suction end is installed to the opposite side, places in the upper end of cable duct, and the air of the cable upper end in the cable duct of being convenient for flows into in the air flow cavity through gas arc pipeline.
1. By setting the timing opening of the electromagnetic valve, the air flow cavity forms a sealing structure in a short time, and the smoke detection device judges whether the smoke concentration parameter value in the flow cavity meets the alarm setting requirement based on the structure, so that the reliability of smoke alarm is improved;
2. the fire extinguishing mechanism comprises a dry powder compression fire extinguisher and a dry powder distribution mechanism, wherein a spray opening of the dry powder compression fire extinguisher is connected with the dry powder pipeline distribution mechanism; uniformly transmitting the dry powder into the cable trench through a dry powder distribution mechanism;
3. a spraying device is arranged on the spraying hole of the dry powder pipeline distribution mechanism, a control mechanism is arranged on the spraying device, and a micro controller, a temperature detection sensor and an electromagnetic mechanism are arranged in the control mechanism; the temperature in the cable trench is detected by the temperature detection sensor, the ignition point in the cable trench is judged, and the dry powder in the dry powder distribution mechanism is used for extinguishing fire in the ignition area by the electromagnetic mechanism.
4. The detection end in the temperature detection sensor is provided with a metal connecting part, and the metal connecting part can cover the temperature of the cable epidermis in the sprinkler area, and the ignition point is judged according to the temperature.
Drawings
FIG. 1 is a schematic diagram of the whole structure of an alarm fireproof device for a cable duct of a transformer substation;
FIG. 2 is a schematic diagram of an alarm device structure of an alarm fireproof device for a cable trough of a transformer substation;
FIG. 3 is a schematic diagram of a fire extinguishing mechanism of an alarm fireproof device for a cable duct of a transformer substation;
FIG. 4 is a schematic diagram of a dry powder pipeline distribution mechanism of an alarm fireproof device for a transformer substation cable pit;
FIG. 5 is a schematic diagram of a metal connection part of an alarm fireproof device for a cable trench of a transformer substation;
fig. 6 is a schematic diagram of an air flow cavity of the alarm fireproof device for a cable duct of a transformer substation.
In the figure: 1. a cable pit structure. 2. And a cover plate. 3. A circuit fixing device. 4. And an alarm device. 5. A fire extinguishing mechanism. 6. And a gas receiving device. 7. And a controller. 8. A gas detection sensor. 9. Dry powder compression fire extinguisher; 10. a dry powder distribution mechanism; 11. a spraying device; 12. a micro controller; 13. a temperature detection sensor; 14. an electromagnetic mechanism; 15. a metal connection.
Detailed Description
The following describes in detail a specific embodiment of an alarm fire protection device for a cable duct of a transformer substation in combination with the accompanying drawings.
As shown in fig. 1, the alarming fireproof device for the cable trench of the transformer substation comprises a cable trench structure 1 placed on the ground, wherein a cover plate 2 is arranged at the upper end of the cable trench structure 1, a line fixing device 3 is arranged on the inner side inner wall and the bottom of the cable trench structure 1, a line fixing rope is arranged on the line fixing device 3 and used for fixedly installing a cable in the cable trench, an alarming device 4 and a fire extinguishing mechanism 5 are arranged in the cable trench, the alarming device 4 is arranged on the inner side of the cover plate 2, the fire extinguishing mechanism 5 is arranged in the cable trench, and the alarming device 4 is connected with the fire extinguishing mechanism 5;
as shown in fig. 2, the alarm device 4 includes a gas receiving device 6, a controller 7 and a gas detection sensor 8, an air flowing cavity is disposed in the gas receiving device 6, air inlet ends are disposed at two sides of the air flowing cavity, air flowing ends are disposed at the top of the air flowing cavity, electromagnetic valves are mounted at the air inlet ends and the air flowing ends, the electromagnetic valves are connected to a power supply, a timing device is disposed on the electromagnetic valves and can be opened at regular time, air in a cable duct flows into the air flowing cavity, a gas detection device is disposed in the air flowing cavity and includes a detection end and a signal transmission end, the detection end can detect smoke concentration in the air flowing cavity, and the controller 7 includes a signal receiving end and a signal transmission end, wherein the signal receiving end is connected with the signal transmission end of the gas detection sensor 8, so that the controller 7 can receive smoke concentration parameter values in the air in the gas detection sensor 8. The gas detection sensor 8 detects the smoke concentration value in the air flow cavity, the smoke concentration value is transmitted to the controller 7, an upper smoke concentration limit parameter is set in the controller 7, and after the smoke concentration reaches the set upper limit value, the controller 7 judges that smoke is generated in the cable trench due to fire.
As shown in fig. 3, the fire extinguishing mechanism comprises a dry powder compression fire extinguisher 9 and a dry powder distribution mechanism 10, wherein a spraying opening of the dry powder compression fire extinguisher 9 is connected with the dry powder pipeline distribution mechanism, an electromagnetic proportional valve is arranged between the spraying opening of the dry powder compression fire extinguisher 9 and the dry powder pipeline distribution mechanism, the electromagnetic proportional valve is connected with a controller 7 of the alarm mechanism, the controller 7 can control the operation of the electromagnetic proportional valve, and a plurality of spraying holes are uniformly distributed at the bottom of the dry powder pipeline distribution mechanism, so that dry powder can flow out from the spraying holes to reach the fire extinguishing position of the cable duct. An electromagnetic proportional valve is arranged between a spraying port of the dry powder compression fire extinguisher 9 and the dry powder pipeline distribution mechanism and is controlled by the controller 7, so that dry powder flows into the dry powder pipeline and flows out through the spraying port to extinguish the fire in the cable trench.
As shown in fig. 4, the spraying holes of the dry powder pipeline distribution mechanism are provided with spraying devices 11, the spraying devices 11 are provided with control mechanisms, the control mechanisms are internally provided with a micro-controller 12, a temperature detection sensor 13 and an electromagnetic mechanism 14, wherein the micro-controller 12 is connected with a power supply, the temperature detection sensor 13 is arranged on the outer side of the spraying devices 11 and can detect the temperature in a cable trench, the bottom of the spraying devices 11 is judged to be a fire point according to the temperature, the electromagnetic mechanism 14 is arranged in the spraying devices 11 and can control whether the spraying devices 11 are connected or not, and the micro-controller 12 is connected with the temperature detection sensor 13 and the electromagnetic mechanism 14 so that the micro-controller 12 can detect the parameter value in the temperature detection sensor 13 and control the electromagnetic mechanism 14 to operate. The upper limit parameter value of the temperature is set in the micro-controller 12, and after the temperature detected by the temperature detection sensor 13 reaches the set upper limit value of the micro-controller 12, the micro-controller 12 controls the electromagnetic mechanism 14 to operate, so that dry powder in the dry powder pipeline distribution mechanism is sprayed out, and the fire in the cable trench is extinguished.
According to the above, wherein the temperature detecting sensor 13 includes a detecting end, a metal connecting portion 15 is provided on the detecting end, and the metal connecting portion 15 is connected to the cable skin, so that the temperature detecting sensor 13 can rapidly change the temperature of the cable skin.
As shown in fig. 5, the metal connection part 15 is detachably connected with the detection end of the temperature detection sensor 13, so that the metal connection part 15 is conveniently installed on the detection end of the temperature detection sensor 13.
According to the above, the electromagnetic proportional valve can control the opening degree of the electromagnetic proportional valve through the controller 7, so as to control the concentration of the dry powder compression fire extinguisher 9 flowing into the dry powder distribution mechanism 10, thereby maximizing the dry powder utilization rate and preventing the dry powder from being wasted in the fire extinguishing process.
As shown in fig. 6, two sides of the air flow cavity are provided with outward air arc-shaped pipelines, one side of each pipeline is connected with the electromagnetic valve on two sides of the air flow cavity, the other side of each pipeline is provided with an air suction end, and the air suction ends are placed at the upper ends of the cable trenches, so that air at the upper ends of the cables in the cable trenches can flow into the air flow cavity through the air arc-shaped pipelines.
Finally, it should be noted that the above-mentioned embodiments are merely illustrative of the technical solution of the invention and not limiting thereof. It will be understood by those skilled in the art that modifications and equivalents may be made to the particular embodiments of the invention, which are within the scope of the claims appended hereto.
Claims (5)
1. The utility model provides a transformer substation cable pit is with warning fire prevention device which characterized in that, including placing the cable pit structure on ground, cable pit structure upper end is equipped with the apron, and the inboard inner wall and the bottom of cable pit structure are equipped with circuit fixing device, install circuit fixing rope on the circuit fixing device for with cable fixed mounting in the cable pit, be provided with alarm device and fire extinguishing mechanism in the cable pit, alarm device installs in the apron inboard, and fire extinguishing mechanism installs in the cable pit, and wherein alarm device is connected with fire extinguishing mechanism;
the alarm device comprises a gas receiving device, a controller and a gas detection sensor, wherein an air flow cavity is arranged in the gas receiving device, air inlet ends are arranged at two sides of the air flow cavity, an air flow end is arranged at the top of the air flow cavity, electromagnetic valves are arranged at the air inlet ends and the air flow ends, the electromagnetic valves are connected with a power supply, a timing device is arranged on the electromagnetic valves, the electromagnetic valves can be opened at regular time, air in a cable trench flows into the air flow cavity, the gas detection device is arranged in the air flow cavity and comprises a detection end and a signal transmission end, the detection end can detect the concentration of smoke in the air flow cavity, and the controller comprises a signal receiving end and a signal transmission end, wherein the signal receiving end is connected with the signal transmission end of the gas detection sensor, so that the controller can receive the parameter value of the concentration of the smoke in the air in the gas detection sensor;
the fire extinguishing mechanism comprises a dry powder compression fire extinguisher and a dry powder distribution mechanism, wherein a spray opening of the dry powder compression fire extinguisher is connected with the dry powder pipeline distribution mechanism, an electromagnetic proportional valve is arranged between the spray opening of the dry powder compression fire extinguisher and the dry powder pipeline distribution mechanism, the electromagnetic proportional valve is connected with a controller of the alarm mechanism, the controller can control the operation of the electromagnetic proportional valve, a plurality of spray holes are uniformly distributed at the bottom of the dry powder pipeline distribution mechanism, and dry powder can flow out from the spray holes to reach the fire extinguishing position of a cable duct;
the spraying device is arranged on the spraying hole of the dry powder pipeline distribution mechanism, the spraying device is provided with a control mechanism, a micro controller, a temperature detection sensor and an electromagnetic mechanism are arranged in the control mechanism, the micro controller is connected with a power supply, the temperature detection sensor is arranged on the outer side of the spraying device and can detect the temperature in a cable trench, the bottom of the spraying device is judged to be a fire point according to the temperature, the electromagnetic mechanism is arranged in the spraying device and can control whether the spraying device is connected or not, and the micro controller is connected with the temperature detection sensor and the electromagnetic mechanism, so that the micro controller can detect the parameter value in the temperature detection sensor and control the electromagnetic mechanism to operate; and setting a temperature upper limit parameter value in the micro-controller, and controlling the electromagnetic mechanism to operate by the micro-controller after the temperature detected by the temperature detection sensor reaches the micro-controller upper limit parameter value, spraying dry powder in the dry powder pipeline distribution mechanism, and extinguishing fire points in the cable duct.
2. The alarming fireproof device for the cable trench of the transformer substation according to claim 1, wherein the temperature detection sensor comprises a detection end, and a metal connection part is arranged on the detection end and connected to the cable skin, so that the temperature detection sensor can quickly change the temperature of the cable skin.
3. The alarming fireproof device for the cable trench of the transformer substation according to claim 2, wherein the metal connecting part is detachably connected with the detection end of the temperature detection sensor, so that the metal connecting part is conveniently installed on the detection end of the temperature detection sensor.
4. The alarming fireproof device for the cable trench of the transformer substation according to claim 1, wherein the electromagnetic proportional valve can control the opening degree of the electromagnetic proportional valve through the controller, so that the concentration of the dry powder compressed fire extinguisher flowing into the dry powder distribution mechanism is controlled, the dry powder utilization rate is maximized, and the condition of dry powder waste in the fire extinguishing process is prevented.
5. The alarming and fireproof device for the cable trench of the transformer substation according to claim 1, wherein the two sides of the air flow cavity are provided with outward gas arc-shaped pipelines, one side of each pipeline is connected with the electromagnetic valve on the two sides of the air flow cavity, the other side of each pipeline is provided with a suction end, and the air suction end is placed at the upper end of the cable trench, so that air at the upper end of a cable in the cable trench can flow into the air flow cavity through the gas arc-shaped pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210597582.0A CN115228012B (en) | 2022-05-30 | 2022-05-30 | Alarm fireproof device for cable duct of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210597582.0A CN115228012B (en) | 2022-05-30 | 2022-05-30 | Alarm fireproof device for cable duct of transformer substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115228012A CN115228012A (en) | 2022-10-25 |
| CN115228012B true CN115228012B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210597582.0A Active CN115228012B (en) | 2022-05-30 | 2022-05-30 | Alarm fireproof device for cable duct of transformer substation |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1254104A (en) * | 1968-02-02 | 1971-11-17 | Pirelli General Cable Works | Improvements relating to fire-fighting equipment |
| CN101819195A (en) * | 2010-04-09 | 2010-09-01 | 成都兴邦泰实业有限责任公司 | Centralized room gas detection system |
| CN104332930B (en) * | 2014-11-13 | 2016-10-19 | 国家电网公司 | The cable channel cover plate of fire and self-extinguishing can be monitored |
| CN111437545A (en) * | 2020-03-25 | 2020-07-24 | 深圳中电科瑞电力自动化有限公司 | Cable fire extinguishing method, apparatus, device and computer readable storage medium |
| CN112090003A (en) * | 2020-09-01 | 2020-12-18 | 国网江苏省电力有限公司盐城供电分公司 | Device for extinguishing fire in cable duct |
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- 2022-05-30 CN CN202210597582.0A patent/CN115228012B/en active Active
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| CN115228012A (en) | 2022-10-25 |
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