Non-pressure storage perfluorohexanone fire extinguishing device with leakage detection function

Abstract

The present application relates to a kind of non-pressure full fluorine hexanone fire extinguishing device with liquid leakage detection function, including fire extinguishing agent storage tank and the fire extinguishing agent stored in fire extinguishing agent storage tank, the fire extinguishing agent is full fluorine hexanone, the fire extinguishing agent storage tank is equipped with fire extinguishing agent output head, the fire extinguishing agent output head is equipped with valve;It also includes whether the leakage detection structure of fire extinguishing agent in fire extinguishing agent storage tank leaks, the fire extinguishing agent storage tank is equipped with the electric heater for heating fire extinguishing agent, the valve is electric valve.The present application aims to provide a kind of non-pressure full fluorine hexanone fire extinguishing device with liquid leakage detection function, which can be known when leaking, solve the problem that the existing full fluorine hexanone fire extinguisher natural gasification is slow and unknown when leaking.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing technology, and in particular to a non-pressurized perfluorohexanone fire extinguishing device with leakage detection function. Background Technology

[0002] A fire extinguisher is a tool used to extinguish fires. It contains chemicals to put out fires. Fire extinguishers are common fire prevention facilities, stored in public places or areas where fires may occur. Different types of fire extinguishers contain different components, designed specifically for different types of fires. Users must be careful when using them to avoid adverse effects and potential life-threatening situations. One type of fire extinguisher uses perfluorohexanone (PFH). PFH is a colorless, odorless, non-toxic, and insulating gas. The extinguishing principle of PFH is based on its physical properties and chemical reactions. Physical extinguishing properties: PFH has high density, high heat capacity, and high specific heat, allowing it to absorb a large amount of heat quickly, rapidly lowering the temperature of the fire source and thus extinguishing it. Furthermore, PFH can form an inert gas layer, preventing air from contacting the fire source and further inhibiting its spread. Chemical extinguishing reaction: PFH reacts with oxygen in the fire source to form non-flammable fluorides and water vapor, thereby weakening or eliminating the fire. Meanwhile, the fluorine in perfluorohexanone has strong oxidizing properties, which can break the chemical bonds in the fire source, making the fire source unstable, thereby achieving the effect of extinguishing the fire.

[0003] In summary, the fire extinguishing principle of perfluorohexanone is to rapidly reduce the temperature of the fire source through a combination of physical and chemical reactions, form an inert gas layer, break the chemical bonds in the fire source, and consume the oxygen in the fire source, thereby achieving the fire extinguishing effect.

[0004] However, existing perfluorohexanone fire extinguishers (devices) have the following shortcomings: after opening the valve, they are sprayed out through natural vaporization, resulting in a slow spraying speed; it is unknown whether they have evaporated, and poor sealing may lead to evaporation that is unknown, resulting in failure to achieve the expected fire extinguishing effect. Summary of the Invention

[0005] The present invention aims to provide a non-pressurized perfluorohexanone fire extinguishing device with leakage detection function that has a fast spray speed and can detect leaks, thus solving the problems of slow spray speed and undetectable leakage of existing perfluorohexanone fire extinguishers due to natural vaporization.

[0006] The above technical problems are solved by the following technical solution: a non-pressurized perfluorohexanone fire extinguishing device with leakage detection function, comprising an extinguishing agent storage tank and an extinguishing agent stored in the storage tank, wherein the extinguishing agent is perfluorohexanone, the storage tank is provided with an extinguishing agent outlet head, and the outlet head is provided with a valve, characterized in that it further includes a leakage detection structure for detecting whether the extinguishing agent in the storage tank is leaking, the storage tank is provided with an electric heater for heating the extinguishing agent, and the valve is an electric valve. The electric heater heats the perfluorohexanone during fire extinguishing, thereby accelerating the vaporization of the perfluorohexanone and improving the fire extinguishing effect. The leakage detection structure can detect whether the extinguishing agent is leaking, and if so, it can be detected in time to avoid discovering that the fire extinguisher is useless when a fire occurs.

[0007] Preferably, the system also includes a housing, with the extinguishing agent storage tank housed within the housing, and the extinguishing agent output head exiting through the housing. The leak detection structure includes a perfluorohexanone detector and an interface on the housing connected to the perfluorohexanone detector. The housing allows for the collection of leaked perfluorohexanone, facilitating detection. Detection using a perfluorohexanone detector is a mature technology; this invention only requires the interface, and the perfluorohexanone detector can be shared among multiple inventions.

[0008] Preferably, the outer casing has connecting pieces at both ends, and the connecting pieces have connecting holes. In use, screws are passed through the connecting holes to connect to the mounting point of the invention, thus securing the invention. This invention is also applicable when used for targeted fire suppression.

[0009] Preferably, the bottom wall of the outer casing and the two connecting pieces are located on the same plane, resulting in good stability during fixing.

[0010] Preferably, the heater includes a straight metal outer tube and an insulating heating core connected inside the metal outer tube. The heating core has a power cord leading out from one end of the metal outer tube. The extinguishing agent storage tank is elongated, and the heater extends along the extension direction of the extinguishing agent storage tank, from one end to the other. This improves the uniformity of heating.

[0011] Preferably, the extinguishing agent outlet head is located at one end along the length of the extinguishing agent storage tank, and the other end of the storage tank has a heater insertion hole. One end of the heater is inserted into the wall of the extinguishing agent outlet head, and the other end passes through the heater insertion hole. The heater power cord is located at the end of the heater located in the heater insertion hole. This two-end support connection ensures good reliability and facilitates the removal and installation of the heater.

[0012] Preferably, the metal outer tube has an outwardly flanged end at one end of the heater insertion hole, and a large-diameter section at the outer end of the heater insertion hole, forming a sealing step between the large-diameter section and the heater insertion hole. A pressing tube is threaded onto the large-diameter section, pressing the outwardly flanged end to seal it onto the sealing step via a sealing ring. The heater power cord is led out through the pressing tube. This facilitates sealing the heater.

[0013] Preferably, a swing limiting structure is also included. The inner circumferential surface of the extinguishing agent storage tank is cylindrical, and the electric heater is cylindrical. The cylinder containing the inner circumferential surface of the electric heater and the extinguishing agent storage tank is coaxial. The leakage detection structure includes a detection head, an alarm, and a power supply. The detection head includes a storage tank conductive ring, a circular tube rotatably inserted into the extinguishing agent storage tank, a float of a conductive structure located inside the circular tube, and a heater conductive ring rotatably fitted onto the electric heater. The circular tube has several connecting holes distributed along its circumference, connecting the inside and outside of the circular tube. The center of gravity of the circular tube is eccentrically positioned. The inner surface of the circular tube has a first conductive plate and a second conductive plate that are delayed along the circumference of the circular tube. The first conductive plate is connected to the heater conductive ring via a conductive rod, passing through the center of the circular tube and the circular... The line connecting the centers of gravity of the tubes bisects the first and second conductive plates. The conductive ring of the storage tank is coaxially fixed to the inner circumference of the extinguishing agent storage tank. The second conductive plate abuts against the conductive ring of the storage tank via contacts. The float can simultaneously abut against both the second and first conductive plates. When the float descends to the position connecting the second and first conductive plates, it indicates that the amount of perfluorohexanone leaking from the extinguishing agent storage tank is below the required level. The outer metal tube is equipped with a metal tube power line, and the conductive ring of the storage tank is connected to a conductive ring power line. The alarm, the metal tube power line, and the conductive ring power line are connected in series to a power source. The swing limiting structure is used to prevent the circular tube from swinging axially along the circular tube and detaching, causing the axis of the circular tube to intersect with the axis of the heater. This technical solution requires the extinguishing agent storage tank to be installed horizontally; otherwise, accurate detection is not possible. Regardless of whether the extinguishing agent storage tank rotates while maintaining a horizontal axis, the circular tube will always have the portion without the conductive plate at the top. When a leak occurs and the portion without the conductive plate is exposed to perfluorohexanone, the leakage has exceeded the limit. At this point, the float descends to connect the second and first conductive plates, thus connecting the alarm to the power supply and triggering an alarm. This provides a specific technical solution for a leak detection structure. The inclusion of a swing limit structure prevents vibrations that could cause the circular tube to sway, leading to detection errors.

[0014] Preferably, the swing limiting structure consists of two arc-shaped limiting plates connected to both radially sides of the circular tube, with the arc-shaped limiting plates contacting and abutting against the inner circumferential surface of the extinguishing agent storage tank. This provides a specific technical solution for the swing limiting structure, which is simple in structure.

[0015] Preferably, the swing limiting structure includes two limiting annular grooves located at both ends of the inner circumference of the extinguishing agent storage tank. Each limiting annular groove contains a detection head, and the two detection heads are connected in parallel and then connected in series with the alarm. This provides another technical solution for the swing limiting structure, which, with the addition of two detection heads, enables accurate detection of perfluorohexanone leakage regardless of whether the extinguishing agent storage tank is horizontal or tilted in any direction.

[0016] The present invention has the following advantages: it can detect whether there is a leak; and it sprays out quickly. Attached Figure Description

[0017] Figure 1 This is a front view diagram of the present utility model; Figure 2 This is a cross-sectional schematic diagram of the fire extinguishing agent storage tank in Example 1; Figure 3 for Figure 2 A magnified view of a portion of point A; Figure 4 for Figure 3 A magnified view of a portion of point B; Figure 5 for Figure 2 A magnified view of a portion at point C; Figure 6 for Figure 2 A schematic diagram of the D-D cross-section; Figure 7 for Figure 6 A magnified view of a portion of point E; Figure 8 This is a cross-sectional schematic diagram of the fire extinguishing agent storage tank in Example 2; Figure 9 for Figure 8 A magnified view of a portion of point F; Figure 10 for Figure 7 A magnified view of a portion of point G.

[0018] In the diagram: 1. Extinguishing agent storage tank; 2. Extinguishing agent output head; 3. Heater; 4. Outer shell; 5. Interface; 6. Connecting piece; 7. Connecting hole; 8. Metal outer tube; 9. Heating core; 10. Heater power cord; 11. Outer flange; 12. Pressing tube; 13. Sealing ring; 14. Alarm; 15. Power supply; 16. Conductive ring of storage tank section; 17. Circular tube; 18. Float; 19. Conductive ring of heater section; 20. Connecting hole; 21. First conductive piece; 22. Second conductive piece; 23. Conductive rod; 24. Contact point; 25. Power cord of metal tube section; 26. Power cord of conductive ring section; 27. Limiting ring groove; 28. Arc-shaped limiting piece. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1, see Figures 1 to 7 as well as Figure 10A non-pressurized perfluorohexanone fire extinguishing device with leakage detection function includes an extinguishing agent storage tank 1 and an extinguishing agent, namely perfluorohexanone, stored in the storage tank. The extinguishing agent storage tank is equipped with an extinguishing agent outlet head 2. The outlet head is equipped with a valve, which is an electric valve. The device also includes a leakage detection structure for detecting whether the extinguishing agent in the storage tank is leaking. An electric heater 3 for heating the extinguishing agent is provided inside the storage tank. The device also includes a housing 4, within which the extinguishing agent storage tank is housed. The housing is a sealed structure capable of storing gas. The outlet head exits through the housing. The leakage detection structure includes a perfluorohexanone detector and an interface 5 on the housing for connecting to the detector. Connecting pieces 6 are provided at both ends of the housing, and connecting holes 7 are provided on the connecting pieces. The bottom wall of the housing and the two connecting pieces are located on the same plane. The electric heater includes a straight metal outer tube 8 and an insulated heating core 9 connected inside the metal outer tube. The heating core has a power cord 10 extending from one end of the metal outer tube. The extinguishing agent storage tank is elongated. The electric heater extends along the length of the extinguishing agent storage tank, from one end to the other. The extinguishing agent outlet head is located at one end of the extinguishing agent storage tank along its length. The other end of the extinguishing agent storage tank has an electric heater insertion hole. One end of the electric heater is inserted into the wall of the extinguishing agent outlet head, and the other end passes through the electric heater insertion hole. The electric heater power cord is located at the end of the electric heater located at the electric heater insertion hole. The metal outer tube has an outward flange 11 at one end of the electric heater insertion hole. The outer end of the electric heater insertion hole has a large diameter section. A sealing step is formed between the large diameter section and the electric heater insertion hole. The large diameter section is threadedly connected to a pressing tube 12. The pressing tube presses down on the outward flange so that the outward flange is sealed on the sealing step by the sealing ring 13. The electric heater power cord is led out through the pressing tube.

[0021] It also includes a swing limiting structure. The inner circumferential surface of the extinguishing agent storage tank is cylindrical. The heater is cylindrical, and the inner circumferential surfaces of the heater and the extinguishing agent storage tank are coaxial. The leakage detection structure includes a detection head, an alarm 14, and a power supply 15. The detection head includes a storage tank conductive ring 16, a circular tube 17 rotatably inserted inside the extinguishing agent storage tank, a float 18 of a conductive structure located inside the circular tube, and a heater conductive ring 19 rotatably fitted on the heater. The circular tube has several connecting holes 20 distributed along the circumference of the circular tube, connecting the inside and outside of the circular tube. The center of gravity of the circular tube is eccentrically set. The inner surface of the circular tube has a first conductive plate 21 and a second conductive plate 22 that are delayed along the circumference of the circular tube. The first conductive plate is connected to the heater conductive ring through a conductive rod 23. The first and second conductive plates are bisected by a line connecting the center of the circular tube and the center of gravity of the circular tube. The storage tank conductive ring is coaxially fixed to the inner circumferential surface of the extinguishing agent storage tank. The second conductive plate abuts against the conductive ring of the storage tank via contact 24. The float can simultaneously abut against both the second and first conductive plates. When the float descends to the position where the second and first conductive plates are connected, it indicates that the amount of perfluorohexanone leaking from the extinguishing agent storage tank is below the required level. The outer metal tube is equipped with a metal tube power line 25, and the conductive ring of the storage tank is connected to a conductive ring power line 26. The alarm, the metal tube power line, and the conductive ring power line are connected in series to the power supply. The swing limiting structure is used to prevent the circular tube from swinging axially along the circular tube and causing it to detach, resulting in the axis of the circular tube intersecting the axis of the heater. The swing limiting structure consists of two arc-shaped limiting plates 28 connected to the radial sides of the circular tube, with the arc-shaped limiting plates contacting and abutting against the inner circumferential surface of the extinguishing agent storage tank.

[0022] Example 2 differs from Example 1 in that: See Figure 8 and Figure 9 The swing limiting structure includes two limiting ring grooves 27 set at both ends of the inner circumference of the fire extinguishing agent storage tank. Each limiting ring groove is equipped with a detection head. The two detection heads are connected in parallel and then connected in series with the alarm.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-pressurized perfluorohexanone fire extinguishing device with leakage detection function, comprising an extinguishing agent storage tank and an extinguishing agent stored in the extinguishing agent storage tank, wherein the extinguishing agent is perfluorohexanone, the extinguishing agent storage tank is provided with an extinguishing agent outlet head, and the extinguishing agent outlet head is provided with a valve, characterized in that, It also includes a leak detection structure for detecting whether the extinguishing agent in the extinguishing agent storage tank is leaking. The extinguishing agent storage tank is equipped with an electric heater for heating the extinguishing agent. The valve is an electric valve. The electric heater includes a straight metal outer tube and an electric heating core insulatedly connected inside the metal outer tube. The electric heating core has an electric heater power line led out from one end of the metal outer tube. The extinguishing agent storage tank is elongated, and the electric heater extends along the extension direction of the extinguishing agent storage tank, extending from one end of the extinguishing agent storage tank to the other end. It also includes a swing limiter. The structure includes a cylindrical inner circumferential surface of the extinguishing agent storage tank and a cylindrical electric heater. The cylinder containing the inner circumferential surface of the electric heater and the extinguishing agent storage tank is coaxial. The leakage detection structure includes a detection head, an alarm, and a power supply. The detection head includes a conductive ring for the storage tank section, a circular tube rotatably inserted inside the extinguishing agent storage tank, a float of a conductive structure located inside the circular tube, and a conductive ring for the electric heater section rotatably fitted onto the electric heater. The circular tube has several connecting holes distributed circumferentially to connect the inside and outside of the circular tube. The circular tube has an eccentric center of gravity. A first conductive plate and a second conductive plate, extending circumferentially, are provided on the inner surface of the circular tube. The first conductive plate is connected to the conductive ring of the heater section via a conductive rod. The first and second conductive plates are bisected by a line connecting the center of the circular tube and its center of gravity. The conductive ring of the storage tank section is coaxially fixed to the inner circumferential surface of the extinguishing agent storage tank. The second conductive plate abuts against the conductive ring of the storage tank section via contacts. The float can simultaneously abut against both the second and first conductive plates. When the float descends to the position connecting the second and first conductive plates, it indicates that the amount of perfluorohexanone leaking from the extinguishing agent storage tank is below the required level. The outer metal tube is equipped with a metal tube power line. The conductive ring of the storage tank section is connected to a conductive ring power line. The alarm, the metal tube power line, and the conductive ring power line are connected in series to a power source. The swing limiting structure prevents the circular tube from swinging axially and disengaging, causing the axis of the circular tube to intersect with the axis of the heater.

2. The non-pressurized perfluorohexanone fire extinguishing device with leakage detection function according to claim 1, characterized in that, It also includes a housing, the fire extinguishing agent storage tank is disposed inside the housing, the fire extinguishing agent output head outputs from the housing, and the leak detection structure includes a perfluorohexanone detector and an interface disposed on the housing that is connected to the perfluorohexanone detector.

3. A non-pressurized perfluorohexanone fire extinguishing device with leakage detection function according to claim 2, characterized in that, The outer casing has connecting pieces at both ends, and the connecting pieces have connecting holes.

4. A non-pressurized perfluorohexanone fire extinguishing device with leakage detection function according to claim 3, characterized in that, The bottom wall of the outer casing and the two connecting pieces are located on the same plane.

5. A non-pressurized perfluorohexanone fire extinguishing device with leakage detection function according to claim 1, characterized in that, The extinguishing agent output head is located at one end of the length of the extinguishing agent storage tank, and the other end of the extinguishing agent storage tank is provided with a heater insertion hole. One end of the heater is inserted into the wall of the extinguishing agent output head, and the other end passes through the heater insertion hole. The power cord of the heater is located at the end of the heater located at the heater insertion hole.

6. A non-pressurized perfluorohexanone fire extinguishing device with leakage detection function according to claim 5, characterized in that, The metal outer tube has an outward flange at one end of the heater insertion hole. The outer end of the heater insertion hole has a large diameter section, and a sealing step is formed between the large diameter section and the heater insertion hole. The large diameter section is threadedly connected to a pressing tube, which presses the outward flange so that the outward flange is sealed on the sealing step by a sealing ring. The heater power cord is led out through the pressing tube.

7. A non-pressurized perfluorohexanone fire extinguishing device with leakage detection function according to claim 1, characterized in that, The swing limiting structure consists of two arc-shaped limiting plates connected to the radial sides of the circular tube, with the arc-shaped limiting plates contacting and abutting against the inner circumferential surface of the fire extinguishing agent storage tank.

8. A non-pressurized perfluorohexanone fire extinguishing device with leakage detection function according to claim 1, characterized in that, The swing limiting structure includes two limiting ring grooves located at both ends of the inner circumference of the fire extinguishing agent storage tank. Each limiting ring groove contains a detection head, and the two detection heads are connected in parallel and then connected in series with the alarm.

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