Intelligent foam fire extinguishing device for tunnel

Abstract

The utility model discloses an intelligent tunnel foam fire extinguishing device, which comprises a box body and an electric box arranged outside the box body, a valve assembly, a hose and a foam liquid box are arranged in the box body, one end of the valve assembly is connected with the hose, and the other end of the valve assembly is connected with the foam liquid box. The foam liquid box is provided with a liquid level sensor and an alarm used for being electrically connected with the liquid level sensor in a matched mode, a sealing strip is arranged at the connecting position of the two adjacent side faces of the foam liquid box and detachably connected with the foam liquid box, and a connecting piece is arranged between the sealing strip and the foam liquid box. The foam liquid box of the fire extinguishing device is not prone to damage, the service life is long, and the fire extinguishing device is more practical.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing device technology, specifically to a tunnel intelligent foam fire extinguishing device. Background Technology

[0002] Intelligent foam fire extinguishing devices for tunnels are fire extinguishing devices suitable for use in tunnels. Due to the limited space and high traffic volume in tunnels, accidents are more likely to occur. Ordinary traffic accidents can be extinguished with ordinary fire extinguishers, but when oil fires occur in tunnels, foam fire extinguishers are required. Existing foam fire extinguishing devices use aqueous film-forming foam (AFCF). The container used to hold the AFCF in this type of device is generally made of multiple pieces of stainless steel welded together. Because AFCF is corrosive, the welded joints of the stainless steel are easily affected by the corrosion of AFCF, resulting in leakage. To avoid corrosion by AFCF, other materials need to be used to make the container, which is more time-consuming and labor-intensive to manufacture, and the service life of containers made of other materials is shorter than that of stainless steel. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an intelligent foam fire extinguishing device for tunnels. The foam liquid tank of this fire extinguishing device is not easily damaged, has a long service life, and is more practical.

[0004] To achieve the above objectives, this utility model provides a tunnel intelligent foam fire extinguishing device, including a housing and an electrical box disposed outside the housing. The housing contains a valve assembly, a hose, and a foam liquid tank. One end of the valve assembly is connected to the hose, and the other end is connected to the foam liquid tank. The foam liquid tank is equipped with a liquid level sensor and an alarm for electrical connection with the liquid level sensor. A sealing strip is provided at the connection between two adjacent sides of the foam liquid tank. The sealing strip is detachably connected to the foam liquid tank. A connector is provided between the sealing strip and the foam liquid tank, and the sealing strip is sealed after being connected to the foam liquid tank.

[0005] The advantages of adopting the above technical solution are as follows: An electrical box is installed outside the main body of the enclosure, while various components are housed inside. The electrical box and components are electrically connected, resulting in a more compact structure and easier maintenance. The inclusion of valve components, hoses, and a foam liquid tank allows foam liquid to be sprayed from the hose when the valve is opened. The combination of a level sensor and an alarm on the foam liquid tank triggers an alarm when the foam liquid level reaches a warning position, alerting those skilled in the art to add more foam liquid. Real-time monitoring enhances safety. Sealing strips at the joints of adjacent sides of the foam liquid tank prevent the welded joints from contacting the foam liquid, avoiding corrosion. Therefore, the manufacturing process is not affected by the welded joints, preventing corrosion and leakage. Manufacturing is more convenient and less prone to damage, and the sealing strips provide a better leak-proof seal.

[0006] The present invention further includes: the connector includes a sliding groove disposed at the connection of two adjacent sides of the foam liquid tank, the sliding groove is connected to the opening of the foam liquid tank, a sealing gasket is disposed on the inner wall of the sliding groove, two adjacent sliding grooves are connected, the sealing strip is slidably connected to the sliding groove, and the sealing strip and the sealing gasket are sealed together.

[0007] The effects of adopting the above technical solution are as follows: by setting a groove at the connection and setting a sealing gasket in the groove, when the sealing strip is connected to the groove, the sealing gasket can form a seal with the sealing strip, preventing the liquid from contacting the connection between the two adjacent sides of the foam liquid tank, preventing the liquid from corroding the connection, improving corrosion resistance and sealing performance, and making it easier to replace the sealing strip.

[0008] The present invention further includes: a limiting flange at the opening of the groove, a limiting wall at the sealing strip, and the limiting flange and the limiting wall engaging in a limiting fit.

[0009] The effect of adopting the above technical solution is that by setting a limiting flange at the opening of the slide groove, the limiting wall of the sealing strip can abut against the limiting flange after the sealing strip is inserted into the slide groove, preventing the sealing strip from detaching from the opening of the slide groove. The limiting effect is good, and the connection stability and sealing effect are improved.

[0010] The present invention further comprises: the sealing strip is a soft sealing strip, and the sealing strip is made of a corrosion-resistant material.

[0011] The effects of adopting the above technical solution are as follows: by setting the sealing strip as a soft sealing strip, the sealing strip is easier to install in the groove, and the soft sealing strip is less prone to damage and can be bent, which can adapt to different shapes of grooves and has a good sealing effect on the groove. In addition, the sealing strip is made of corrosion-resistant material, which is less likely to be corroded by liquids and improves its service life.

[0012] The present invention further includes the following features: the foam liquid tank is provided with a liquid level warning line, and the liquid level sensor is positioned corresponding to the liquid level warning line.

[0013] The effect of adopting the above technical solution is that by setting a liquid level warning line on the foam liquid tank and setting the liquid level sensor to correspond to the liquid level warning line, the liquid level sensor can transmit information to the alarm when the liquid level in the foam liquid tank reaches the warning position, thus making it safer and more practical. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0015] Figure 2 This is a partial cross-sectional view of an embodiment of the present utility model;

[0016] Figure 3 This is a partial exploded view of an embodiment of the present invention. Detailed Implementation

[0017] An embodiment of the intelligent foam fire extinguishing device for tunnels according to this utility model is shown in the figure. This utility model provides an intelligent foam fire extinguishing device for tunnels, including a housing 1 and an electrical box 2 disposed outside the housing 1. The housing 1 contains a valve assembly 3, a hose 4, and a foam liquid tank 5. One end of the valve assembly 3 is connected to the hose 4, and the other end is connected to the foam liquid tank 5. The foam liquid tank 5 is equipped with a liquid level sensor 6 and an alarm 7 electrically connected to the liquid level sensor 6. A sealing strip 8 is provided at the connection point of two adjacent sides of the foam liquid tank 5. The sealing strip 8 is detachably connected to the foam liquid tank 5, and a connector is provided between the sealing strip 8 and the foam liquid tank 5. The sealing strip 8 is sealed after being connected to the foam liquid tank 5. The electrical box 2 is disposed outside the housing 1, and various components are disposed inside the housing 1. The electrical box 2 is electrically connected to the components. This integrated design makes the structure more compact and easier to maintain. The design incorporates a valve assembly 3, a hose 4, and a foam liquid tank 5, allowing foam liquid in the tank 5 to spray out from the hose 4 when the valve is opened. The combination of a level sensor 6 and an alarm 7 on the foam liquid tank 5 enables the alarm 7 to sound an alarm based on information from the level sensor 6 when the foam liquid level reaches a warning position, alerting those skilled in the art to add more foam liquid. This allows for real-time monitoring and enhanced safety. Furthermore, the use of sealing strips 8 at the joints of adjacent sides of the foam liquid tank 5 prevents the welded joints from contacting the foam liquid, thus avoiding corrosion. This design also prevents corrosion and leakage during the manufacturing process of the foam liquid tank 5 due to the welded joints, making manufacturing easier and less prone to damage. The sealing strips 8 also provide a better leak-proof seal.In implementing this solution, those skilled in the art can weld multiple stainless steel sheets into a foam liquid tank 5, and insert a sealing strip 8 at the weld joint to cover it, preventing the foam liquid inside the tank 1 from directly contacting the welded area. In this solution, the connection between the sealing strip 8 and the foam liquid tank 5 is a sliding insertion joint, which is convenient for disassembly and assembly. In other embodiments, those skilled in the art can also use other corrosion-resistant materials to make the foam liquid tank 5. However, in this solution, the sealing strip 8 is set to seal the connection between the foam liquid tank 5 and the sealing strip 8, so that the type of material used in the manufacture of the foam liquid tank 5 is not limited by the corrosion problem. After the foam liquid tank 5 is manufactured, it is installed in the tunnel intelligent foam... Inside the fire extinguishing device housing 1, when powered on by those skilled in the art, in the event of a fire in the tunnel, those skilled in the art can receive an alarm message through the alarm 7 installed inside the housing 1 and remotely control the spraying of foam liquid. In the art, the liquid in this foam liquid tank 5 is generally aqueous film-forming foam, which is corrosive and is generally used to extinguish oil fires. The connecting component includes a sliding groove 9 located at the connection point of two adjacent sides of the foam liquid tank 5. The sliding groove 9 communicates with the opening of the foam liquid tank 5. A sealing gasket 10 is provided on the inner wall of the sliding groove 9. Two adjacent sliding grooves 9 are connected. The sealing strip 8 slides with the sliding groove 9. The sealing strip 8 and the sealing gasket 10 are connected in a sealing fit. A groove 9 is provided at the connection point, and the sealing gasket 10 is placed in the groove 9. When the sealing strip 8 and the groove 9 are connected, the sealing gasket 10 can form a seal with the sealing strip 8, preventing liquid from contacting the connection points on the adjacent sides of the foam liquid tank 5, thus preventing liquid corrosion at the connection point. This provides better corrosion resistance and sealing performance, and makes it easier to replace the sealing strip 8. A limiting flange 11 is provided at the opening of the groove 9, and a limiting wall 12 is provided on the sealing strip 8. The limiting flange 11 and the limiting wall 12 engage in a limiting fit. The limiting flange 11 at the opening of the groove 9 can... This design ensures that after the sealing strip 8 is inserted into the groove 9, its limiting wall 12 abuts against the limiting flange 11, preventing the sealing strip 8 from detaching from the opening of the groove 9. This provides a good limiting effect, improving connection stability and sealing performance. The sealing strip 8 is a soft sealing strip made of corrosion-resistant material. Using a soft sealing strip makes it easier to install in the groove 9, and the soft material makes it less prone to damage and allows for bending, adapting to different shapes of grooves 9 and providing a good sealing effect. Furthermore, the corrosion-resistant material makes it less susceptible to liquid corrosion, extending its service life.In this solution, during installation, those skilled in the art can open the top cover of the foam liquid tank 5 to expose the opening of the slide groove 9, and then insert the sealing strip 8 from the opening of one of the slide grooves 9. When the sealing strip 8 reaches the end of the current slide groove 9 and the beginning of another slide groove 9, those skilled in the art can continue to apply a pushing force to allow the sealing strip 8 to enter the other slide groove 9 from the beginning of the other slide groove 9. At this time, the sealing strip 8 bends at the connection of the two slide grooves 9 to cooperate with the sealing of the slide groove 9. In this solution, the sealing strip 8 can be a plastic sealing strip 8 or a corrosion-resistant rubber sealing strip 8. The foam liquid tank 5 is provided with a liquid level warning line 13, and the liquid level sensor 6 is set at the position corresponding to the liquid level warning line 13. By setting the liquid level warning line 13 on the foam liquid tank 5 and setting the liquid level sensor 6 corresponding to the liquid level warning line 13, when the liquid level in the foam liquid tank 5 reaches the warning position, the liquid level sensor 6 can transmit information to the alarm 7 to issue an alarm, making it safer and more practical.

[0018] The following components can be used during the implementation of this solution:

[0019] (1) Solenoid valve: Foam liquid solenoid valve 025-08DC12V, fire water solenoid valve 250-25DC12V can be controlled by circuit;

[0020] (2) Time relay JSZ6: The solenoid valve is controlled by setting the delay time using the relay.

[0021] (3) When the normally open contact of the intermediate relay RXM4L is open, the normally closed contact of the intermediate relay connected in series with the buzzer is closed, and the buzzer is powered on to sound an alarm.

[0022] (4) 2P air switch, used to control the on / off of the main power supply of the circuit; buzzer (AC 220V), used to emit a buzzer alarm sound when the liquid level is lower than the set value; signal transceiver TD-220, connected in series with the normally open contact of relay (KA4), used to detect the liquid level sensor signal and transmit the electrical signal to the mobile phone alarm platform; liquid level sensor XKC-Y29-V, used to detect the liquid level position, connected in series with the coil of relay (KA4);

[0023] When implementing this solution, the specific operating procedure is as follows: Press the start button -- the water pump is energized -- the coil of intermediate relay KA1 is energized -- the normally open contact of KA1 closes and self-locks -- the coil of time relay KT1 is energized and counts down for 2 seconds -- the normally open contact of KT1 closes -- the foam liquid pump is energized -- the coil of intermediate relay KA2 is energized -- the normally open contact of KA2 closes and self-locks.

[0024] Pressing the stop button energizes the coil of intermediate relay KA3, causing the normally open contact of KA3 to close and self-lock, opening the normally closed contact of KT3, energizing the coil of time relay KT2 for a 40-second countdown, then opening the normally closed contact of KT2, and the system stops operating. When the liquid level is below the set value, the sensor activates, energizing the coil of intermediate relay KA4, closing the normally open contact of KA4, triggering a local buzzer alarm / energizing the transceiver to send a remote alarm signal.

[0025] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A tunnel intelligent foam fire extinguishing device, comprising a housing and an electrical box disposed outside the housing, wherein the housing contains a valve assembly, a hose, and a foam liquid tank, one end of the valve assembly being connected to the hose and the other end being connected to the foam liquid tank, characterized in that: The foam liquid tank is equipped with a liquid level sensor and an alarm that is electrically connected to the liquid level sensor. A sealing strip is provided at the connection between two adjacent sides of the foam liquid tank. The sealing strip is detachably connected to the foam liquid tank. A connector is provided between the sealing strip and the foam liquid tank. The sealing strip is sealed after being connected to the foam liquid tank.

2. The intelligent foam fire extinguishing device for tunnels according to claim 1, characterized in that: The connector includes a sliding groove disposed at the connection point of two adjacent sides of the foam liquid tank. The sliding groove is connected to the opening of the foam liquid tank. A sealing gasket is disposed on the inner wall of the sliding groove. Two adjacent sliding grooves are connected. The sealing strip is slidably connected to the sliding groove. The sealing strip and the sealing gasket are sealed together.

3. The intelligent foam fire extinguishing device for tunnels according to claim 2, characterized in that: The opening of the chute is provided with a limiting flange, and the sealing strip is provided with a limiting wall. The limiting flange and the limiting wall are engaged in a limiting fit.

4. The intelligent foam fire extinguishing device for tunnels according to claim 3, characterized in that: The sealing strip is a flexible sealing strip, and the sealing strip is made of corrosion-resistant material.

5. The intelligent foam fire extinguishing device for tunnels according to claim 1, characterized in that: The foam liquid tank is equipped with a liquid level warning line, and the liquid level sensor is set at the position corresponding to the liquid level warning line.

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