Miniature fire extinguishing device for outdoor electric meter box

Abstract

The utility model relates to the technical field of electric meter boxes, in particular to a miniature fire extinguishing device for an outdoor electric meter box, which comprises a shell, the shell is mounted right above the electric meter box, a temperature sensor is mounted in the middle of the bottom of the shell, powder spraying pipes are mounted on two sides of the bottom of the shell, and a dry powder box is mounted above the inside of the shell. The bottoms of the two sides of the dry powder box are connected with powder outlet pipes, and roller shutter assemblies are installed on the two sides in the shell. According to the miniature fire extinguishing device for the outdoor electric meter box, the temperature sensor installed in the middle of the bottom of the device can monitor temperature changes in the electric meter box in real time, once the temperature rises abnormally, it is indicated that a fire may occur, the sensor immediately sends a signal, and timely and accurate triggering conditions are provided for follow-up fire extinguishing operation. After a fire signal is received, the PLC single chip microcomputer rapidly controls the valve to be opened, fire extinguishing dry powder in the dry powder box is blown into the electric meter box by the fan through the powder outlet pipe and the powder spraying pipe, an effective fire extinguishing barrier is formed, and the initial fire is rapidly extinguished.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric meter box, specifically, relate to a kind of outdoor electric meter box micro fire extinguishing device. BACKGROUND

[0002] In power system, electric meter box as the key equipment of measurement and distribution electric energy, its safe operation is crucial. However, due to the complex outdoor environment, electric meter box often faces various security risks, especially fire risk. Electric wire, electrical components and possible aging, short circuit problems inside electric meter box, can become the source of fire. Once electric meter box fire, not only will cause power supply interruption, affect the normal electricity of residents and enterprises, can also cause greater fire, pose a threat to personal safety and property safety.

[0003] Traditional fire extinguishing mode, such as manual use fire extinguisher or waiting for fire brigade to arrive, often exist reaction delay, limited fire extinguishing effect and other problems. Especially for outdoor electric meter box this kind of widely distributed and difficult to monitor in real time equipment, more need an efficient, automatic fire extinguishing solution. Therefore, research and develop a kind of outdoor electric meter box micro fire extinguishing device capable of automatic detection fire and rapid response, for improving the safety performance of electric meter box, reduce fire loss has important significance. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of outdoor electric meter box micro fire extinguishing device to solve the problems of traditional fire extinguishing mode, such as manual use fire extinguisher or waiting for fire brigade to arrive, often exist reaction delay, limited fire extinguishing effect and other problems in the background art.

[0005] To achieve the above object, the utility model provides a kind of outdoor electric meter box micro fire extinguishing device, including shell, the shell is installed in the just above electric meter box, temperature sensor is installed in the bottom middle of the shell, powder spraying pipe is installed in the bottom both sides of the shell, dry powder tank is installed in the inside upper portion of the shell, the bottom of the both sides of dry powder tank is connected with powder outlet pipe, the bottom end of powder outlet pipe is connected with powder spraying pipe, roll-up curtain assembly is installed in the inside both sides of the shell.

[0006] As preferred, valve is installed on the powder outlet pipe.

[0007] As preferred, fan is installed in the powder spraying pipe.

[0008] As preferred, PLC single-chip microcomputer and battery are installed in the inside of the shell.

[0009] As preferred, opening is arranged in the both sides of the shell, the roll-up curtain assembly includes winding wheel and stretching wheel, fireproof curtain is wound on the winding wheel, and the fireproof curtain is worn from opening after passing through stretching wheel.

[0010] Preferably, the bottom surface of the stretching wheel presses on the fireproof curtain, and the winding wheel and the stretching wheel are driven to rotate by independent motors.

[0011] Preferably, the output end of the temperature sensor is electrically connected with the input end of the PLC single-chip microcomputer, and the PLC single-chip microcomputer controls the valve and the motor switch of the fan, the winding wheel and the stretching wheel through a circuit.

[0012] Preferably, the top of the dry powder box is detachably provided with a box cover.

[0013] Compared with the prior art, the utility model has the beneficial effects of:

[0014] In the outdoor electric meter box micro fire extinguishing device, the temperature sensor installed in the middle of the bottom of the device can monitor the temperature change in the electric meter box in real time, and once the temperature abnormally rises, it indicates that a fire may occur, and the sensor will immediately send a signal to provide timely and accurate triggering conditions for subsequent fire extinguishing operation.

[0015] The winding curtain assembly on both sides of the device is automatically unfolded under the control of the PLC single-chip microcomputer, the fireproof curtain rapidly covers the opening of the electric meter box, effectively isolates the fire source, prevents the fire from spreading to the outside through the electric meter box, and protects the surrounding equipment and personnel safety. The whole fire extinguishing process is intelligently controlled by the PLC single-chip microcomputer, realizes full automation from fire monitoring to fire extinguishing operation, does not need manual intervention, greatly improves the fire extinguishing efficiency and response speed. The detachable box cover on the top of the dry powder box makes the replenishment and replacement of the dry powder for fire extinguishing simple and convenient, reduces the maintenance difficulty and cost of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a whole structure schematic view of the utility model;

[0017] Fig. 2 It is an internal structure schematic view of the shell in the utility model;

[0018] Fig. 3 It is a structure schematic view of the winding curtain assembly in the utility model;

[0019] The meanings of various reference numerals in the drawings are as follows:

[0020] 1, shell; 11, opening; 12, PLC single-chip microcomputer; 13, battery; 2, temperature sensor; 3, powder spraying pipe; 31, fan; 4, dry powder tank; 41, tank cover; 42, powder outlet pipe; 43, valve; 5, roller shutter assembly; 51, winding wheel; 52, stretching wheel; 53, fireproof curtain; 6, electric meter box. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] The utility model provides a kind of outdoor electric meter box miniature fire extinguishing device, as shown in figure Figs. 1-3 It is installed in the bottom middle position of shell 1, can directly monitor the temperature change in the inside of electric meter box 6, once temperature is abnormally elevated to preset threshold, it indicates that there is fire risk, realizes accurate, real-time monitoring of fire situation. When temperature sensor 2 detects fire, dry powder tank 4 in the inside of device is connected with powder outlet pipe 42 and powder spraying pipe 3, can rapidly spray fire extinguishing dry powder to the inside of electric meter box 6, effectively extinguishes initial fire, prevents fire spread, safeguards the safety of electric meter box and its surrounding equipment. Roller shutter assembly 5 installed in the inside of shell 1 can be rapidly unfolded and form physical isolation barrier when fire occurs, effectively prevent fire spread to the outside through electric meter box opening, further protect the safety of surrounding environment and personnel. The entire fire extinguishing device is integrated in the inside of shell 1, compact structure, easy to install, does not occupy additional space, and can adapt to complex and changeable environmental conditions outdoors, improves the safety and reliability of electric meter box.

[0023] In the embodiment, valve 43 is installed on powder outlet pipe 42. By installing valve 43 on powder outlet pipe 42, accurate control of dry powder release is realized. When fire does not occur, valve remains closed state, to prevent dry powder from leaking accidentally. Once fire is detected, PLC single-chip microcomputer 12 controls valve to open rapidly, to ensure that dry powder can be accurately and timely sprayed to the inside of electric meter box, improve fire extinguishing efficiency and accuracy.

[0024] Specifically, a fan 31 is installed in the powder spraying pipe 3. The installation of the fan 31 enhances the spraying effect of the dry powder. When the valve 43 is opened, the fan 31 is started to generate a strong airflow to uniformly blow the dry powder into every corner of the electric meter box through the powder spraying pipe 3, ensuring that the fire extinguishing agent can fully cover the fire source and quickly extinguish the fire, while avoiding uneven extinguishing caused by dry powder accumulation.

[0025] Further, a PLC single-chip microcomputer 12 and a battery 13 are installed inside the shell 1. The PLC single-chip microcomputer 12 serves as the control core of the entire fire extinguishing device, realizing intelligent management of temperature monitoring, valve control, fan starting, and operation of the roller blind assembly. The battery 13 provides stable power support for the PLC single-chip microcomputer 12 and the entire system, ensuring that the device can still work independently and complete the fire extinguishing task in the case of external power interruption, improving the reliability and adaptability of the device.

[0026] Further, the shell 1 is provided with openings 11 on both sides, and the roller blind assembly 5 includes a winding wheel 51 and an extending wheel 52. The fireproof curtain 53 is wound around the winding wheel 51, and after passing through the extending wheel 52, it is drawn out from the openings 11. The extending wheel 52 rotates to drive the fireproof curtain 53 to extend, and the winding wheel 51 rotates to drive the fireproof curtain 53 to wind up. This design enables the fireproof curtain 53 to quickly unfold from the openings 11 on both sides of the shell 1 when a fire occurs, forming a physical isolation layer to effectively prevent the spread of fire and smoke. The cooperation of the winding wheel 51 and the extending wheel 52 ensures that the fireproof curtain 53 can be smoothly and quickly unfolded and retracted, improving the response speed and isolation effect of the device.

[0027] Further, the bottom surface of the extending wheel 52 presses on the fireproof curtain 53, and both the winding wheel 51 and the extending wheel 52 are driven to rotate by independent motors. Independent motor drive enables the winding wheel 51 and the extending wheel 52 to work cooperatively, achieving rapid unfolding and retraction of the fireproof curtain 53, improving the stability and reliability of the device.

[0028] Further, the output end of the temperature sensor 2 is electrically connected to the input end of the PLC single-chip microcomputer 12, and the PLC single-chip microcomputer 12 controls the valve 43 and the motor switches of the fan 31, the winding wheel 51, and the extending wheel 52 through a circuit. This design realizes the automation and intelligence of the entire fire extinguishing device. The temperature sensor 2 monitors the temperature inside the electric meter box in real time, and immediately transmits a signal to the PLC single-chip microcomputer 12 once an anomaly is detected. The PLC single-chip microcomputer 12 quickly controls the opening of the valve 43, the starting of the fan 31, and the unfolding of the roller blind assembly 5 according to the preset program, achieving rapid and accurate fire extinguishing operation, greatly improving the response speed and fire extinguishing efficiency of the device.

[0029] Further, the top of the dry powder box 4 is detachably mounted with a box cover 41. The detachable design of the box cover 41 makes the maintenance and replenishment of the dry powder box 4 simple and convenient. When the dry powder is used up or needs to be replaced, the filling or replacement operation can be performed by simply opening the box cover 41, without the need to disassemble the entire device, reducing the maintenance difficulty and cost, and improving the practicability and convenience of the device.

[0030] The outdoor electric meter box micro fire extinguishing device of the utility model in use, first, the device is installed, the temperature sensor 2 continuously monitors the temperature change inside the electric meter box 6. The PLC single-chip microcomputer 12 is in standby state, ready to receive the signal of the temperature sensor 2.

[0031] When the temperature inside the electric meter box 6 abnormally rises to the preset threshold, the temperature sensor 2 converts this signal into an electrical signal and sends it to the PLC single-chip microcomputer 12. After receiving the signal, the PLC single-chip microcomputer 12 immediately judges the fire and confirms the existence of the fire. The PLC single-chip microcomputer 12 controls the valve 43 on the powder outlet pipe 42 to open quickly, and starts the fan 31 in the powder spraying pipe 3. The fan 31 generates a strong airflow, which blows the fire extinguishing dry powder in the dry powder box 4 through the powder outlet pipe 42 and the powder spraying pipe 3 into the electric meter box 6, covers the fire source, and extinguishes the fire. At the same time, the PLC single-chip microcomputer 12 controls the motor of the roller blind assembly 5 to start, driving the winding wheel 51 and the stretching wheel 52 to rotate. The stretching wheel 52 drives the fireproof curtain 53 to rapidly expand from the opening 11 on both sides of the shell 1, forming a physical isolation layer to prevent the fire and smoke from spreading outward.

[0032] During the fire extinguishing process, the temperature sensor 2 continues to monitor the temperature inside the electric meter box 6 to ensure that the fire source is completely extinguished. If dry powder needs to be continuously sprayed, the PLC single-chip microcomputer 12 will keep the valve 43 open and the fan 31 running until the fire source is completely extinguished. When the fire source is extinguished and the temperature inside the electric meter box 6 returns to normal, the PLC single-chip microcomputer 12 controls the valve 43 to close and the fan 31 to stop running, and controls the motor of the roller blind assembly 5 to reverse, winding the fireproof curtain 53 back into the shell 1. The device enters standby state, waiting for the next fire detection. When the fire extinguishing dry powder in the dry powder box 4 is used up or needs to be replaced, the operator can open the box cover 41 to perform the filling or replacement operation, without the need to disassemble the entire device, which is convenient and fast.

[0033] Finally, it should be noted that the PLC single-chip microcomputer 12, battery 13, etc. in the embodiment, the electronic components in the above components are all general standard components or components known to those skilled in the art, and their structure and principle can be known by those skilled in the art through technical manual or through conventional experimental method. In the idle place of the device, all the electrical components are connected by wires respectively. The specific connection means should be completed according to the working order of the electrical components in the above working principle, which is a known technology in the art.

[0034] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A miniature fire extinguishing device for outdoor meter cabinets, comprising a housing (1), characterized in that: The shell (1) is installed above the electric meter box (6), a temperature sensor (2) is installed in the middle of the bottom of the shell (1), powder spraying pipes (3) are installed on both sides of the bottom of the shell (1), a dry powder box (4) is installed on the top of the inside of the shell (1), powder outlet pipes (42) are connected to the bottom of both sides of the dry powder box (4), the bottom ends of the powder outlet pipes (42) are connected with the powder spraying pipes (3), and roller blind assemblies (5) are installed on both sides of the inside of the shell (1).

2. The outdoor meter cabinet micro fire extinguishing apparatus according to claim 1, wherein: A valve (43) is installed on the powder outlet pipe (42).

3. The outdoor meter cabinet micro fire extinguishing apparatus according to claim 2, wherein: A fan (31) is installed in the powder spraying pipe (3).

4. The outdoor meter cabinet micro fire extinguishing apparatus according to claim 3, wherein: A PLC single-chip microcomputer (12) and a battery (13) are installed in the shell (1).

5. The outdoor meter cabinet micro fire extinguishing apparatus of claim 4, wherein: Openings (11) are arranged on both sides of the shell (1), the roller blind assembly (5) comprises a winding wheel (51) and an extending wheel (52), a fireproof curtain (53) is wound on the winding wheel (51), and the fireproof curtain (53) passes through the extending wheel (52) and then passes out of the opening (11).

6. The outdoor meter cabinet micro fire extinguishing apparatus of claim 5, wherein: The bottom surface of the extending wheel (52) is pressed on the fireproof curtain (53), and the winding wheel (51) and the extending wheel (52) are driven to rotate by independent motors.

7. The outdoor meter cabinet micro fire extinguishing apparatus of claim 6, wherein: The output end of the temperature sensor (2) is electrically connected with the input end of the PLC single-chip microcomputer (12), and the PLC single-chip microcomputer (12) controls the motor switches of the valve (43), the fan (31), the winding wheel (51) and the extending wheel (52) through a circuit.

8. The outdoor meter cabinet micro fire extinguishing apparatus of claim 1, wherein: A box cover (41) is detachably installed on the top of the dry powder box (4).

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