Heptafluoropropane gas fire extinguishing device and working method thereof

Abstract

The present invention relates to the technical field of fire extinguishing devices, and in particular to a heptafluoropropane gas fire extinguishing device and its working method. The fire extinguishing device includes two gas storage tanks and a gas outlet assembly, one containing heptafluoropropane gas and the other containing inert gas. The gas outlet assembly includes a shell, a main gas pipe, a secondary gas pipe, and a lifting seat. One end of the main gas pipe extends from the side wall of the shell and the other end is connected to the first gas storage tank. The secondary gas pipe is arranged on one side of the main gas pipe. The second gas storage tank is connected to a guide rod, which passes through both the main gas pipe and the secondary gas pipe and is provided with a gas outlet hole 1 at a corresponding position on the secondary gas pipe. The secondary gas pipe is rotatably connected to the guide rod, and the other end of the secondary gas pipe is rotatably connected to the lifting seat. The present invention provides two gas storage tanks. During the fire extinguishing process, heptafluoropropane gas is used as the main fire extinguishing gas, and the inert gas surrounds the heptafluoropropane gas to cover the fire point, thereby reducing the instantaneous diffusion range of the heptafluoropropane when it is sprayed and increasing its coverage speed on the fire point.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing devices, and in particular to a heptafluoropropane gas fire extinguishing device and a working method thereof. Background Art

[0002] Heptafluoropropane is widely used in firefighting due to its good fire extinguishing effect and the fact that it leaves no residue after extinguishing a fire. However, due to its high cost and the fact that the environment must be kept closed to achieve maximum effectiveness, it is difficult to use in daily life. In addition, heptafluoropropane needs to diffuse quickly in the fire environment when used. The existing spraying method is often fixed fire cabinets or pipe networks. Although there is sufficient spraying height, the three-dimensional diffusion speed is limited, and the spray angle cannot be manually adjusted due to the risk of suffocation. Therefore, a heptafluoropropane gas fire extinguishing device is needed. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a heptafluoropropane gas fire extinguishing device and a working method thereof to solve the problem that heptafluoropropane fire extinguishing gas has poor fire extinguishing effect outdoors. It has the advantages of rapid identification of usage, good fire extinguishing effect, and multiple application scenarios.

[0004] In the first aspect, the present invention provides a heptafluoropropane gas fire extinguishing device, comprising a gas tank 1, a gas tank 2, a lifting assembly and an air outlet assembly. Gas tank 1 and gas tank 2 are arranged on one side of the lifting assembly, and the air outlet assembly is rotatably arranged above the lifting assembly. The air outlet assembly is controlled to rotate and adjust the angle between the air outlet assembly and the lifting assembly. The air outlet assembly comprises a shell, a main air pipe, a secondary air pipe and a lifting seat. One end of the main air pipe extends from the side wall of the shell and the other end is connected to gas tank 1. The secondary air pipe is arranged on one side of the main air pipe. Gas tank 2 is connected to a guide rod. The guide rod passes through the main air pipe and the secondary air pipe at the same time and an air outlet hole 1 is provided at the corresponding position of the secondary air pipe. The secondary air pipe is rotatably connected to the guide rod, and the other end of the secondary air pipe is rotatably connected to the lifting seat.

[0005] Among them, the gas tank one contains heptafluoropropane gas, and the gas tank two contains inert gas with a density lower than that of heptafluoropropane gas. When in use, the lifting seat is controlled to move up and down to adjust the angle of the secondary gas pipe, ensuring that the heptafluoropropane gas is closer to the ignition point than the gas in the gas tank two.

[0006] Furthermore, the gas storage tank 2 contains nitrogen.

[0007] Furthermore, air curtain cavities are provided on both the left and right sides of the shell, the guide rod passes through the air curtain cavity and is provided with a second air outlet at the position of the air curtain cavity.

[0008] Furthermore, a guide plate is provided in the air curtain cavity, the guide plate is rotatably connected to the guide rod and covers the second air outlet hole, and a plurality of ventilation channels whose extension lines do not pass through the axis of the guide plate are provided on the guide plate.

[0009] Furthermore, the air outlet assembly also includes a diversion pipe, and there are several main air pipes, and several main air pipes are connected through the diversion pipe. A switch arc plate and a reset spring are provided in the diversion pipe. Several switch holes are equidistantly provided on the switch arc plate. The reset spring is provided at one end of the switch arc plate and connected to the side wall of the main air pipe. When there is no ventilation, the reset spring causes the switch hole on the switch arc plate to be misaligned with the main air pipe.

[0010] Furthermore, the gas in the second gas tank passes through the lifting assembly to realize the lifting control of the lifting assembly. When the gas in the second gas tank is exhausted, the height of the lifting assembly is lowered.

[0011] Furthermore, the lifting assembly includes a sealing sleeve and a sealing rod, the sealing sleeve is mounted on the sealing rod, and the bottom side of the sealing sleeve is provided with an air outlet three for communicating with the guide rod. The gas in the gas storage tank two is passed into the space formed by the sealing sleeve and the sealing rod to realize relative movement control between the sealing sleeve and the sealing rod. When the sealing rod moves to below the air outlet three, the gas in the gas storage tank two enters the guide rod.

[0012] Furthermore, the lifting assembly also includes a moving block, the side wall of the sealing sleeve is provided with a balancing hole, the moving block is coaxially arranged in the sealing sleeve and its movable path includes the position of the balancing hole, the moving block is provided with a flow channel along the axial direction, when gas is injected into the sealing sleeve, the moving block covers and blocks the balancing hole, and when the injection of gas into the sealing sleeve is stopped, the moving block is moved upward by the gas in the sealing sleeve, so that the balancing hole opens.

[0013] Furthermore, the device also includes a cover body, which is arranged around the lifting assembly.

[0014] In a second aspect, the present invention provides a method for operating a heptafluoropropane gas fire extinguishing device. Based on the fire extinguishing device described above, the specific steps are as follows:

[0015] S1: When a fire occurs, place the device at the fire extinguishing point, then start the gas tank 2. The lifting component is activated by the gas in the gas tank 2 so that the gas outlet component reaches the final height. At this time, the air flow begins to be discharged from the secondary air pipe.

[0016] S2: Adjust the inclination angle of the auxiliary gas pipe according to the location of the ignition point to ensure that the gas discharged from gas tank one is closer to the ignition point than the gas discharged from gas tank two.

[0017] S3: When the gas in the second gas storage tank is gradually exhausted, the lifting assembly returns to its original position so that the height of the gas outlet assembly is lowered. The height position of the gas outlet assembly is used to determine whether the fire extinguishing device needs to be supplemented or replaced.

[0018] By adopting the above technical solution, the beneficial effects of the present invention are:

[0019] The present invention achieves a fire extinguishing effect by providing two gas storage tanks, allowing two different gases to be ejected in different directions. During the fire extinguishing process, HFC-227ea gas is used as the primary fire extinguishing gas, and then inert gases of varying densities surround the HFC-227ea gas, covering the fire point. This reduces the instantaneous diffusion range of the HFC-227ea gas during injection, increases the speed at which HFC-227ea covers the fire point, and thus improves the fire extinguishing effect of HFC-227ea gas in non-confined spaces. A lifting assembly controlled by the inert gas intake allows the ejection height of the gas outlet assembly to be adjusted, increasing the three-dimensional diffusion rate of the gas. When the inert gas is exhausted, the height of the gas outlet assembly gradually lowers to indicate insufficient usage. This makes the device more intuitive to use and facilitates unmanned fire extinguishing.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0021] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiment is described with reference to the various figures and drawings.

[0022] In order to make the above and other objects, features and advantages of the present invention more obvious and easy to understand, one or more preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention but do not constitute a limitation of the present invention.

[0024] In the drawings, like components are given like reference numerals, and the drawings are schematic and not necessarily drawn to scale.

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only one or several embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the overall structure of a heptafluoropropane gas fire extinguishing device of the present invention;

[0027] Figure 2 A partial side perspective view of a heptafluoropropane gas fire extinguishing device according to the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a gas outlet component of a heptafluoropropane gas fire extinguishing device of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of a gas outlet component of a heptafluoropropane gas fire extinguishing device of the present invention;

[0030] Figure 5 A perspective view of a manifold of a heptafluoropropane gas fire extinguishing device according to the present invention;

[0031] Figure 6 This is a schematic diagram of the switch arc structure of a heptafluoropropane gas fire extinguishing device of the present invention;

[0032] Figure 7 This is a perspective view of the interior of the air curtain chamber of a heptafluoropropane gas fire extinguishing device of the present invention;

[0033] Figure 8 This is a perspective view of the structure of a guide plate of a heptafluoropropane gas fire extinguishing device according to the present invention;

[0034] Figure 9 A perspective view of a lifting assembly of a heptafluoropropane gas fire extinguishing device according to the present invention;

[0035] Figure 10 This is a cross-sectional view of a lifting assembly of a heptafluoropropane gas fire extinguishing device according to the present invention.

[0036] Description of main reference numerals:

[0037] 1- Gas tank 1;

[0038] 2- Gas tank 2;

[0039] 21- guide rod; 211- air outlet 1;

[0040] 3-Lifting assembly;

[0041] 31-sealing sleeve; 311-air outlet hole three; 312-balancing hole;

[0042] 32-sealing rod;

[0043] 33-moving block; 331-flow channel;

[0044] 4-air outlet assembly;

[0045] 41-housing; 411-air curtain chamber; 4111-ventilation channel; 412-guide plate;

[0046] 42-main trachea;

[0047] 43- accessory trachea;

[0048] 44-lifting seat;

[0049] 45-shunt tube;

[0050] 46- switch arc piece; 461- switch hole;

[0051] 47-return spring;

[0052] 5-Hood body. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but are not intended to limit the present invention.

[0054] Reference Figure 1-10 In a first aspect, the present invention provides a technical solution: a heptafluoropropane gas fire extinguishing device. The device includes a gas storage tank 1, a gas storage tank 2, a lifting assembly 3, and a gas outlet assembly 4.

[0055] Gas tank 1 1 and gas tank 2 2 are arranged on one side of the lifting component 3, wherein gas tank 1 contains heptafluoropropane gas, and gas tank 2 2 contains an inert gas with a density lower than that of heptafluoropropane gas, such as nitrogen.

[0056] The outlet assembly 4 is rotatably mounted above the lifting assembly 3. The angle between the outlet assembly 4 and the lifting assembly 3 is adjusted by controlling the rotation of the outlet assembly 4. The rotation of the outlet assembly 4 can be controlled by coaxially disposing a drive motor on the rotating shaft of the outlet assembly 4, or by connecting the drive device to the rotating shaft of the outlet assembly 4 using a transmission structure such as a pulley or gears.

[0057] The gas outlet assembly 4 includes a housing 41, a main gas pipe 42, a secondary gas pipe 43, and a lifting seat 44. One end of the main gas pipe 42 extends from the side wall of the housing 41, and the other end is connected to the gas tank 1. The main gas pipe 42 and the housing 41 are fixedly connected, and the injection angle of the main gas pipe 42 can be adjusted by controlling the rotation of the housing 41. The secondary gas pipe 43 is located on one side of the main gas pipe 42. The gas tank 2 is connected to a guide rod 21. The guide rod 21 passes through both the main gas pipe 42 and the secondary gas pipe 43 from the side and has a gas outlet hole 211 at a corresponding position on the secondary gas pipe 43. The secondary gas pipe 43 is rotatably connected to the guide rod 21, and the other end of the secondary gas pipe 43 is rotatably connected to the lifting seat 44. During use, the lifting seat 44 is controlled to move up and down to adjust the angle of the secondary gas pipe 43, ensuring that the HFC-227 gas is closer to the ignition point than the gas in the gas tank 2.

[0058] To reduce the diffusion range of HFC-227ea gas, air curtain cavities 411 are provided on both sides of the side housing 41. A guide rod 21 extends through the air curtain cavity 411 and is provided with a second air outlet hole at the location of the air curtain cavity 411. Furthermore, to ensure uniform diffusion of the second air outlet hole on the guide rod 21, a guide plate 412 is provided within the air curtain cavity 411. The guide plate 412 is rotatably connected to the guide rod 21 and covers the second air outlet hole. The guide plate 412 is surrounded by several ventilation channels 4111, whose extensions do not pass through the axis of the guide plate 412. The ventilation channels 4111 are angled with the second air outlet hole, causing the guide plate 412 to rotate during the injection of pressurized gas.

[0059] There can be multiple main gas pipes 42. In this case, the gas outlet assembly 4 also includes a shunt pipe 45, through which the multiple main gas pipes 42 are connected. To enable main gas pipes 42 at different locations to simultaneously emit powerful gas, a switch arc piece 46 and a return spring 47 are provided within the shunt pipe 45. The switch arc piece 46 is provided with multiple switch holes 461 at equal intervals. The return spring 47 is located at one end of the switch arc piece 46 and connected to the side wall of the main gas pipe 42. When the gas is not flowing, the return spring 47 causes the switch holes 461 on the switch arc piece 46 to be misaligned with the main gas pipe 42. For gas to enter the shunt pipe 45, it is necessary to first fill the shunt pipe 45 completely, and then drive the switch arc piece 46 to move so that the switch holes 461 are aligned with the main gas pipe 42.

[0060] The lifting component 3 can be electrically or pneumatically controlled. In this embodiment, the gas in the gas tank 2 is used up through the lifting component 3 to realize the lifting control of the lifting component 3. When the gas in the gas tank 2 is exhausted, the height of the lifting component 3 is lowered. Its specific structure is as follows: the lifting component 3 includes a sealing sleeve 31 and a sealing rod 32. The sealing sleeve 31 is sleeved on the sealing rod 32. The bottom side of the sealing sleeve 31 is provided with an air outlet three 311 for communicating with the guide rod 21. The gas in the gas tank 2 is passed into the space formed by the sealing sleeve 31 and the sealing rod 32 to realize the relative movement control between the sealing sleeve 31 and the sealing rod 32. When the sealing rod 32 moves to the bottom of the air outlet three 311, the gas in the gas tank 2 enters the guide rod 21. When the gas in the gas storage tank 2 is about to be exhausted or has been exhausted, the gas entering the sealing sleeve 31 is not enough to support the weight of the sealing sleeve 31 and the gas outlet assembly 4. At this time, the sealing sleeve 31 will drop under the action of gravity. At this time, the gas in the sealing sleeve 31 and the sealing rod 32 is squeezed and discharged. The discharge method can be to set a valve between the tank body 2 and the sealing sleeve 31. However, in order to reduce the manual control of the entire device, the lifting assembly 3 also includes a moving block 33. The side wall of the sealing sleeve 31 is provided with a balancing hole 312. The moving block 33 is coaxially arranged in the sealing sleeve 31 and its movable path includes the location of the balancing hole 312. The moving block 33 is provided with a flow channel 331 along the axial direction. When gas is injected into the sealing sleeve 31, the moving block 33 covers and blocks the balancing hole 312. When the injection of gas into the sealing sleeve 31 stops, the moving block 33 is moved upward by the gas in the sealing sleeve 31, so that the balancing hole 312 is opened.

[0061] Furthermore, in order to protect the use environment of the sealing sleeve 31 , the device further includes a cover body 5 , which is arranged around the lifting assembly 3 .

[0062] In a second aspect, the present invention provides a method for operating a heptafluoropropane gas fire extinguishing device. Based on the fire extinguishing device described above, the specific steps are as follows:

[0063] S1: When a fire occurs, place the device at the fire extinguishing point, then start the gas tank 2, and the lifting component 3 is started under the action of the gas in the gas tank 2 so that the gas outlet component 4 reaches the final height. At this time, the auxiliary gas pipe 43 begins to discharge air.

[0064] S2: Adjust the inclination angle of the auxiliary gas pipe 43 according to the position of the ignition point to ensure that the gas discharged from the gas tank 1 is closer to the ignition point than the gas discharged from the gas tank 2. When the ignition point is not higher than the height of the main gas pipe 42, the lifting seat 44 is lowered to make the auxiliary gas pipe 43 swing upward. At this time, the gas ejection height in the gas tank 2 is higher than the ejection height of the heptafluoropropane gas. Because its density is lower than that of heptafluoropropane gas, a protective gas layer will be formed on the surface of the heptafluoropropane; when the ignition point is higher than the height of the main gas pipe 42, the lifting seat 44 is moved up to make the auxiliary gas pipe 43 swing downward. At this time, the gas ejection height in the gas tank 2 is lower than the ejection height of the heptafluoropropane gas. Because its density is lower than that of heptafluoropropane gas, an instantaneous thrust will be formed under the heptafluoropropane to push the heptafluoropropane to cover the ignition point.

[0065] S3: When the gas in the gas storage tank 2 is gradually exhausted, the lifting assembly 3 returns to its original position so that the height of the gas outlet assembly 4 is lowered. The height position of the gas outlet assembly 4 is used to determine whether the fire extinguishing device needs to be supplemented or replaced.

[0066] It should be understood that the embodiments disclosed herein are not limited to the specific processing steps or materials disclosed herein, but should extend to equivalent substitutions of such features understood by those skilled in the relevant art. It should also be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting.

[0067] The "embodiment" mentioned in the specification means that a particular feature or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. Therefore, the phrase or "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0068] Furthermore, the described features or characteristics may be combined in any other suitable manner into one or more embodiments. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the present invention. However, those skilled in the relevant art will appreciate that the present invention may be implemented without one or more of the above specific details or may be implemented using other methods, components, materials, etc.

Claims

1. A heptafluoropropane gas fire extinguishing device, characterized in that: The escalator is configured to move the air duct from one end of the air outlet to the other end of the air outlet, and the escalator is configured to move the air duct from one end of the air outlet to the other end of the air outlet. The first gas tank contains heptafluoropropane gas, and the second gas tank contains an inert gas with a density lower than that of heptafluoropropane gas. When in use, the lifting seat is controlled to move up and down to adjust the angle of the auxiliary gas pipe, ensuring that the heptafluoropropane gas is closer to the ignition point than the gas in the second gas tank. The gas in the second gas tank passes through the lifting assembly to realize the lifting control of the lifting assembly. When the gas in the second gas tank is exhausted, the height of the lifting assembly is lowered; The lifting assembly includes a sealing sleeve and a sealing rod. The sealing sleeve is mounted on the sealing rod. The bottom side of the sealing sleeve is provided with an air outlet three for communicating with the guide rod. The gas in the gas storage tank two is passed into the space formed by the sealing sleeve and the sealing rod to realize relative movement control between the sealing sleeve and the sealing rod. When the sealing rod moves to the bottom of the air outlet three, the gas in the gas storage tank two enters the guide rod.

2. The heptafluoropropane gas fire extinguishing device according to claim 1, characterized in that: The gas storage tank 2 contains nitrogen.

3. The heptafluoropropane gas fire extinguishing device according to claim 1, characterized in that: The left and right sides of the shell are both provided with air curtain cavities, the guide rod passes through the air curtain cavity and is provided with a second air outlet at the position of the air curtain cavity.

4. The heptafluoropropane gas fire extinguishing device according to claim 3, characterized in that: A guide plate is provided in the air curtain cavity, the guide plate is rotatably connected to the guide rod and covers the second air outlet hole, and a plurality of ventilation channels whose extension lines do not pass through the axis of the guide plate are arranged on the guide plate.

5. The heptafluoropropane gas fire extinguishing device according to claim 1, characterized in that: The air outlet assembly also includes a shunt pipe, which has several main air pipes, and the several main air pipes are connected through the shunt pipe. A switch arc plate and a reset spring are provided in the shunt pipe. Several switch holes are equidistantly provided on the switch arc plate. The reset spring is provided at one end of the switch arc plate and connected to the side wall of the main air pipe. When there is no ventilation, the reset spring causes the switch hole on the switch arc plate to be misaligned with the main air pipe.

6. The heptafluoropropane gas fire extinguishing device according to claim 1, characterized in that: It also includes a cover body, which is arranged around the lifting assembly.

7. A method for operating a heptafluoropropane gas fire extinguishing device, based on the fire extinguishing device according to claim 1, characterized in that: The specific steps are as follows: S1: When a fire occurs, place the device at the fire extinguishing point, then start the second gas tank. The lifting component is activated by the gas in the second gas tank so that the gas outlet component reaches the final height. At this time, the secondary gas pipe begins to discharge air. S2: Adjust the inclination angle of the auxiliary gas pipe according to the location of the ignition point to ensure that the gas discharged from gas tank 1 is closer to the ignition point than the gas discharged from gas tank 2; S3: When the gas in the second gas storage tank is gradually exhausted, the lifting assembly returns to its original position so that the height of the gas outlet assembly is lowered. The height position of the gas outlet assembly is used to determine whether the fire extinguishing device needs to be supplemented or replaced.

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