Electrical cabinet high temperature alarm and automatic fire extinguishing double protection device

Abstract

This utility model relates to a dual protection device for electrical cabinets, featuring high-temperature alarm and automatic fire extinguishing. It includes a fire-fighting agent tank equipped with nozzles, a solenoid valve, and a bottle head valve. The nozzles are connected to both the solenoid valve and the bottle head valve, and are located inside the electrical cabinet. A fire detection tube is also located inside the electrical cabinet, with one end closed and the other end connected to the bottle head valve. A temperature sensor is located inside the electrical cabinet. A controller is electrically connected to the solenoid valve and includes a built-in alarm module. A temperature monitoring module is electrically connected to the temperature sensor and the controller. This utility model can promptly detect overheating anomalies in electrical circuits and automatically extinguish fires in electrical circuits, preventing further spread of fires.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing equipment technology, and in particular to a dual protection device for electrical cabinet high temperature alarm and automatic fire extinguishing. Background Technology

[0002] Traditional motor control center (MCC) electrical cabinets rely solely on protective components such as circuit breakers, frequency converters, and motor protectors to prevent short circuits, overloads, and other abnormalities in electrical circuits. They depend on regular inspections by electrical personnel to diagnose any anomalies. Since it's difficult for electrical personnel to be on duty 24 / 7, if the protective components in the cabinet fail, causing the electrical circuit to overheat, there's a possibility that the hazard might go undetected. Furthermore, electrical personnel may struggle to detect subtle, hidden anomalies in the electrical circuits, allowing localized electrical faults to easily escalate unnoticed and ultimately lead to an electrical circuit fire. Moreover, there's a significant time delay between electrical personnel discovering a fire, retrieving firefighting equipment, and implementing fire suppression measures, potentially leading to further delays in extinguishing the fire. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problems in the prior art that electrical personnel cannot detect abnormalities such as overheating of electrical circuits in a timely manner, and that there is a time delay in fire extinguishing and rescue of electrical circuit fires. In this way, a dual protection device for electrical cabinet high temperature alarm and automatic fire extinguishing is provided, which can detect electrical circuit overheating abnormalities in a timely manner and automatically extinguish electrical circuit fires, thus preventing the further spread of electrical circuit fires.

[0004] To solve the above-mentioned technical problems, this utility model provides a dual protection device for electrical cabinets, including high-temperature alarm and automatic fire extinguishing, comprising:

[0005] The fire extinguishing agent canister is equipped with a nozzle, a solenoid valve, and a bottle head valve. The nozzle is connected to the solenoid valve and the bottle head valve. The nozzle is located inside an electrical cabinet.

[0006] A fire detector tube is installed inside the electrical cabinet, with one end of the fire detector tube being closed and the other end connected to the bottle head valve;

[0007] A temperature sensor is installed inside the electrical cabinet;

[0008] A controller electrically connected to the solenoid valve, the controller having a built-in alarm module;

[0009] A temperature monitoring module, which is electrically connected to the temperature sensor and the controller.

[0010] In one embodiment of the present invention, a display electrically connected to the controller is also included, the display being disposed outside the electrical cabinet.

[0011] In one embodiment of this utility model, the melting point temperature of the fire probe is 160℃±2℃.

[0012] In one embodiment of this utility model, the working pressure of the bottle head valve is greater than or equal to 2.5 MPa.

[0013] In one embodiment of this utility model, the nozzle is connected to the solenoid valve and the bottle head valve via a pipe.

[0014] In one embodiment of this utility model, a pressure switch is provided inside the fire detection tube, and the pressure switch is electrically connected to the alarm module of the fire control center.

[0015] In one embodiment of the present invention, an alarm bell is also provided outside the electrical cabinet, and the alarm bell is electrically connected to the pressure switch.

[0016] In one embodiment of this utility model, the controller is set with a first alarm temperature and a second alarm temperature, the first alarm temperature being lower than the second alarm temperature, wherein the first alarm temperature is associated with the alarm bell and the second alarm temperature is associated with the solenoid valve.

[0017] In one embodiment of this utility model, the range of the first alarm temperature is 70°C to 160°C, and the range of the second alarm temperature is greater than 160°C.

[0018] In one embodiment of this utility model, the fire extinguishing agent container is filled with heptafluoropropane.

[0019] In one embodiment of this utility model, the pressure switch, the bottle head valve, and the pipe fitting are connected by a tee connector.

[0020] In one embodiment of this utility model, the two nozzles and the pipe fitting are connected by a tee connector.

[0021] In one embodiment of this utility model, the temperature sensor is disposed on one side of the contact portion of the electrical cabinet.

[0022] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0023] The electrical cabinet high-temperature alarm and automatic fire extinguishing dual protection device described in this utility model utilizes temperature sensors and fire detectors to detect abnormal phenomena in the electrical circuits inside the electrical cabinet in real time. This overcomes the difficulty for electrical personnel to continuously patrol and inspect, and to detect subtle abnormalities in the electrical circuits. The temperature monitoring module determines the internal temperature of the electrical cabinet in real time, and the controller controls the opening and closing of the solenoid valve. The fire detector also senses the internal temperature of the electrical cabinet in real time, so that the nozzle can automatically spray fire extinguishing agent to quickly extinguish fires in the electrical circuits and prevent the fire from spreading. The temperature sensor and the fire detector complement each other, fully monitoring the temperature at various points inside the electrical cabinet, reducing blind spots, and improving the monitoring range and accuracy. Attached Figure Description

[0024] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the structure of the electrical cabinet dual protection device with high temperature alarm and automatic fire extinguishing in a preferred embodiment of this utility model;

[0026] Figure 2 This diagram illustrates the relationship between the electrical cabinet, temperature sensor, temperature monitoring module, controller, display, and solenoid valve in a preferred embodiment of the present invention.

[0027] Explanation of reference numerals in the instruction manual: 1. Extinguishing agent container; 11. Solenoid valve; 12. Bottle head valve; 13. Release port; 14. Pipe fitting; 15. First nozzle; 16. Second nozzle; 17. Small ball valve; 2. Electrical cabinet; 3. Fire detection tube; 31. End of fire detection tube; 32. End plug; 33. Beginning of fire detection tube; 4. Temperature sensor; 5. Temperature monitoring module; 6. Controller; 7. Display; 8. Alarm bell; 9. Pressure switch; 10a. T-connector; 10b. T-connector. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0029] Reference Figure 1 and Figure 2 As shown, in one embodiment of this utility model, a dual protection device for electrical cabinet high-temperature alarm and automatic fire extinguishing is disclosed, including,

[0030] Fire extinguishing agent tank 1 is equipped with a nozzle, a solenoid valve 11, and a bottle head valve 12. The nozzle is connected to the solenoid valve 11 and the bottle head valve 12. The nozzle is located inside the electrical cabinet 2.

[0031] The fire detector tube 3 is installed inside the electrical cabinet 2, with one end of the fire detector tube 3 being closed and the other end being connected to the bottle head valve 12;

[0032] Temperature sensor 4 is installed inside the electrical cabinet 2;

[0033] Controller 6 is electrically connected to the solenoid valve 11, and the controller 6 has a built-in alarm module;

[0034] Temperature monitoring module 5 is electrically connected to temperature sensor 4 and controller 6.

[0035] The dual protection device for high temperature alarm and automatic fire extinguishing of electrical cabinet described in this embodiment uses temperature sensor 4 and fire detector 3 as temperature sensing elements to detect abnormal phenomena in the electrical circuit inside electrical cabinet 2 in real time. The data from temperature sensor 4 can be fed back to the alarm module built into controller 6 through temperature monitoring module 5, enabling electrical personnel to monitor the temperature inside the electrical cabinet in real time. This overcomes the difficulty for electrical personnel to continuously patrol and inspect, and to detect subtle abnormalities in the electrical circuit. By judging the temperature inside electrical cabinet 2 in real time through temperature monitoring module, controller 6 controls the opening and closing of solenoid valve 11, and fire detector 3 senses the temperature inside electrical cabinet 2 in real time, so that the nozzle can automatically spray the fire extinguishing agent in fire extinguishing agent tank 1 to quickly extinguish the fire in the electrical circuit and prevent the fire from spreading. Temperature sensor 4 and fire detector 3 complement each other and jointly monitor the temperature at various points inside electrical cabinet 2, reducing monitoring blind spots and improving monitoring range and accuracy.

[0036] In one embodiment of this utility model, the temperature monitoring module 5 and the temperature sensor 4 are wirelessly connected.

[0037] Reference Figure 2 As shown, in one embodiment of this utility model, a display 7 electrically connected to the controller 6 is also included. The display 7 is used to display the alarm signal of the temperature monitoring module 5 and the temperature inside the electrical cabinet 2. The display 7 is located outside the electrical cabinet 2.

[0038] In one embodiment of this utility model, the controller 6 is preferably a computer host with built-in software. When the computer host receives the signal from the temperature monitoring module 5, the software outputs the temperature to the display 7 for monitoring by electrical personnel.

[0039] In one embodiment of this utility model, a fire detector tube 3 pressurized with nitrogen is used as a temperature sensing element and is arranged in the protected area inside the electrical cabinet 2. When the electrical circuit catches fire, the fire detector tube 3 is heated and softens and bursts when the temperature rises to the melting point. The internal gas pressure drops sharply and triggers the cylinder valve 12 to open. The extinguishing agent canister 1 releases the extinguishing agent through the release pipe. The melting point temperature of the fire detector tube 3 is 160℃±2℃.

[0040] In one embodiment of this utility model, the working pressure of the bottle head valve 12 is greater than or equal to 2.5 MPa.

[0041] Reference Figure 1 As shown, in one embodiment of this utility model, the nozzle is connected to the solenoid valve 11 and the bottle head valve 12 through the pipe fitting 14. After the solenoid valve 11 and the bottle head valve 12 are opened, the extinguishing agent in the extinguishing agent tank 1 enters the pipe fitting 14 and is finally sprayed out from the nozzle.

[0042] In one embodiment of this utility model, the pipe fitting 14 is made of metal.

[0043] Reference Figure 1 As shown, in one embodiment of this utility model, a pressure switch 9 is provided inside the fire detection tube 3. The pressure switch 9 is electrically connected to the alarm module of the fire control center. When the air pressure of the fire detection tube 3 drops sharply, the pressure switch 9 will be triggered to generate an electrical signal (such as a dry contact signal). The electrical signal is transmitted to the alarm module of the fire control center, thereby automatically triggering the fire control center fault alarm.

[0044] Reference Figure 1 As shown, in one embodiment of this utility model, an alarm bell 8 is also provided outside the electrical cabinet 2. The alarm bell 8 is electrically connected to the pressure switch 9. The electrical signal generated by the pressure switch 9 can also trigger the alarm bell 8 to emit an alarm sound, reminding on-site electrical personnel that there is an overheating abnormality inside the electrical cabinet 2 and that the fault point needs to be dealt with.

[0045] In one embodiment of this utility model, the controller 6 is set with a first alarm temperature and a second alarm temperature. The first alarm temperature is lower than the second alarm temperature. The first alarm temperature is associated with the alarm bell 8. Specifically, when the temperature monitoring module 5 detects that the temperature inside the electrical cabinet 2 reaches the first alarm temperature, and there is no fire in the electrical circuit, the controller 6 outputs alarm information on the display 7 to remind electrical personnel to immediately handle the abnormal point and prevent the electrical fault from evolving into an electrical fire. The second alarm temperature is associated with the solenoid valve 11. When the temperature monitoring module 5 detects that the temperature inside the electrical cabinet 2 reaches the second alarm temperature, it indicates that there is a fire in the electrical circuit. At this time, the controller 6 controls the solenoid valve 11 to open and release fire extinguishing agent to extinguish the fire in the electrical circuit.

[0046] In one embodiment of this utility model, the range of the first alarm temperature is 70°C to 160°C, and the range of the second alarm temperature is greater than 160°C.

[0047] In one embodiment of this utility model, one end of the pipe 14 is connected to the release port 13 of the solenoid valve 11 and the bottle head valve 12.

[0048] Reference Figure 1 As shown, in one embodiment of this utility model, the fire extinguishing agent tank 1 is filled with heptafluoropropane (HFC227ea).

[0049] Reference Figure 1 As shown, in one embodiment of this utility model, the pressure switch 9, the bottle head valve 12, and the pipe fitting 14 are respectively connected to the three connectors of the tee connector 10a.

[0050] In one embodiment of the present invention, the two nozzles and the pipe fitting 14 are respectively connected to the three joints of the tee connector 10b. The nozzles are made of corrosion-resistant metal material, and the two nozzles are respectively marked as the first nozzle 15 and the second nozzle 16.

[0051] In one embodiment of this utility model, the end 31 of the fire probe 3 is sealed by an end plug 32.

[0052] In one embodiment of this utility model, the temperature sensor 4 and the fire detector 3 are disposed on one side of the contact portion of the electrical cabinet 2, so that they are closest to the fire source. The contact portion is a conductive contact point for establishing or disconnecting electrical connections in the electrical circuit. The conductive contact point is prone to high temperature phenomena.

[0053] In one embodiment of this utility model, one end of the bottle head valve 12 is connected to the extinguishing agent canister 1, and the other end is connected to the beginning end 33 of the fire detection tube 3. The bottle head valve 12 is provided with a pin structure. When the fire detection tube 3 is not broken, the air pressure at both ends of the bottle head valve 12 is in a balanced state, and the pin structure will block the release pipe of the extinguishing agent canister 1. After the fire detection tube 3 is broken, the high pressure of the extinguishing agent canister 1 pushes the pin structure to block the beginning end 33 of the fire detection tube 3 and open the release pipe at the same time, so that the extinguishing agent of the extinguishing agent canister 1 can enter the pipe fitting 14 through the bottle head valve 12.

[0054] The working principle of the dual protection device for high temperature alarm and automatic fire extinguishing of electrical cabinet described in this utility model is as follows:

[0055] When the temperature monitoring module 5 detects that the temperature of electrical cabinet 2 exceeds 70°C, it immediately sends the signal to the controller 6. The alarm module in the background of the controller 6 issues an alarm signal to alert electrical personnel of the potential danger. When the temperature monitoring module 5 detects that the temperature of electrical cabinet 2 exceeds 160°C, it immediately sends the signal to the controller 6. The controller 6 controls the solenoid valve 11 to open, and the extinguishing agent in the extinguishing agent tank 1 is sprayed out from the nozzle to extinguish the fire in the electrical circuit. At the same time, the fire detection tube reaches the set temperature and bursts instantly, causing the internal air pressure to drop instantly. The high pressure in the extinguishing agent tank pushes the cylinder head valve 12 to open, and the extinguishing agent in the extinguishing agent tank 1 is sprayed out from the nozzle to extinguish the fire in the electrical circuit, preventing the fire from spreading further.

[0056] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An electrical cabinet high temperature alarm and automatic fire extinguishing dual protection device, characterized in that, include, The fire extinguishing agent canister is equipped with a nozzle, a solenoid valve, and a bottle head valve. The nozzle is connected to the solenoid valve and the bottle head valve. The nozzle is located inside an electrical cabinet. A fire detector tube is installed inside the electrical cabinet, with one end of the fire detector tube being closed and the other end connected to the bottle head valve; A temperature sensor is installed inside the electrical cabinet; A controller electrically connected to the solenoid valve, the controller having a built-in alarm module; A temperature monitoring module, which is electrically connected to the temperature sensor and the controller.

2. The double protection device of high temperature alarm and automatic extinguishing for electrical cabinet according to claim 1, characterized in that, It also includes a display electrically connected to the controller, the display being located outside the electrical cabinet.

3. The double protection device of high temperature alarm and automatic extinguishing for electrical cabinet according to claim 1, characterized in that, The melting point temperature of the fire probe is 160℃±2℃.

4. The double protection device of high temperature alarm and automatic extinguishing for electrical cabinet according to claim 1, characterized in that, The working pressure of the bottle head valve is greater than or equal to 2.5 MPa.

5. The double protection device of high temperature alarm and automatic extinguishing for electrical cabinet according to claim 1, characterized in that, The nozzle is connected to the solenoid valve and the bottle head valve via a pipe.

6. The double protection device of high temperature alarm and automatic extinguishing for electrical cabinet according to claim 1, characterized in that, The fire detection tube is equipped with a pressure switch, which is electrically connected to the alarm module of the fire control center.

7. The double protection device for high temperature warning and automatic extinguishing of an electrical cabinet according to claim 6, characterized in that, It also includes an alarm bell located outside the electrical cabinet, which is electrically connected to the pressure switch.

8. The double protection device of high temperature alarm and automatic extinguishing for electrical cabinet according to claim 7, characterized in that, The controller is set with a first alarm temperature and a second alarm temperature, wherein the first alarm temperature is lower than the second alarm temperature, the first alarm temperature is associated with the alarm bell, and the second alarm temperature is associated with the solenoid valve.

9. The double protection device for high temperature alarm and automatic extinguishing of an electrical cabinet according to claim 8, characterized in that, The first alarm temperature range is 70°C to 160°C, and the second alarm temperature range is greater than 160°C.

10. The double protection device for high temperature warning and automatic extinguishing of an electrical cabinet according to claim 1, characterized in that, The extinguishing agent container is filled with heptafluoropropane.

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