Clean gas foam mixer
By using vortex plate and hole slot design in the clean gas foam mixer, the clean gas and fire water first mix to form a liquid, and then mix it with the foam liquid, solving the problems of low gas content and complex structure in traditional devices, achieving more efficient fire extinguishing effect and simplified installation design.
Patent Information
- Application Number
- CN202420300695.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-19
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-02-19
AI Technical Summary
When using clean gases such as heptafluoropropane in traditional clean gases, it is difficult for the gasified gas to be completely preserved in the foam, resulting in a low content in the foam and a complex device structure.
A mixer including a gas connection pipe and a foam liquid connection pipe is designed. The mixer is installed in the mixer. The outer wall of the mixing pipe is equipped with a through hole and a vortex plate. The clean gas and fire water are first mixed with the vortex plate and the hole groove design. Clean the gas mixture and mix it with the foam liquid to improve the gas content and mixing effect.
It significantly improves the content of heptafluoropropane in the foam, improves the fire extinguishing effect, simplifies the device structure, makes it smaller, more convenient to install and use, reduces vibration caused by the mutual impact of liquids, and improves the mixing effect.
Smart Images
Figure CN222195792U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a clean gas foam mixer. Background Art
[0002] Clean gas foam mixer is a new type of fire-fighting equipment in the foam fire extinguishing system. Most traditional clean gas foam mixers first mix foam liquid into pressurized water to form a foam mixture, and then use clean gas as a foaming medium and mix it into the foam mixture to form a clean gas foam mixture, which is then released.
[0003] The test data of clean gas taking HFC-227ea as an example shows that although this mixing technology can extinguish fires of low-boiling-point flammable liquids, it is difficult to completely preserve the vaporized HFC-227ea in the foam. The actual foam produced has a low content of HFC-227ea, and the other part is lost into the atmosphere. In addition, most of the existing mixers design the HFC-227ea mixing part and the foam liquid mixing part separately, making the overall device more complicated.
[0004] To address this problem, we proposed a clean gas foam mixer. Utility Model Content
[0005] The purpose of the utility model is to provide a clean gas foam mixer to solve the problems raised in the above background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A clean gas foam mixer comprises a mixer connected to a first connecting pipe and a second connecting pipe at both ends respectively, the mixer has a mixing chamber inside, the outer wall of the mixer is sequentially penetrated with a gas connecting pipe and a foam liquid connecting pipe along its length direction, a mixing pipe is installed in the mixer, the mixing pipe comprises a first guide pipe and a second guide pipe, one end of the first guide pipe is fixedly connected to the gas connecting pipe, one end of the second guide pipe is fixedly connected to the foam liquid connecting pipe, a plurality of through holes are penetrated through the outer walls of the first guide pipe and the second guide pipe, and a vortex plate is fixedly connected to the outer walls of the first guide pipe and the second guide pipe.
[0008] As a further solution of the utility model: the first flow guide pipe and the second flow guide pipe are both coaxially arranged with the mixer, and the first flow guide pipe and the second flow guide pipe are fixed to each other.
[0009] As a further solution of the utility model: the outer wall of the vortex plate is provided with a plurality of holes and grooves.
[0010] As a further solution of the utility model: the vortex plate is in a trumpet-shaped spiral shape.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. This device integrates the existing clean gas mixer and foam liquid mixer into one, making the device simple in structure, compact in size, easy to install and convenient to use;
[0013] 2. The mixer provided in the device first mixes the clean gas as the medium with the fire water in the mixing chamber to form a clean gas mixed liquid, and then injects the foam liquid to form a clean gas foam mixed liquid. Taking the clean gas of heptafluoropropane as an example, compared with the existing technology, the heptafluoropropane content in the foam of the fire extinguishing agent produced by the foaming is much higher than that of the original technology, and the actual fire extinguishing situation also has obvious advantages, and the foaming situation is better;
[0014] 3. In this device, the direction of clean gas and foam liquid entering is consistent with the direction of fire water flow, which greatly reduces the mutual impact between liquids and the resulting vibration, and is more conducive to the mixing of clean gas foam mixture;
[0015] 4. This device adopts the design of vortex plate and hole groove, so that the mixed liquid continuously rotates and collides along the vortex plate, and then uses the hole groove to break up the clean gas foam mixed liquid, playing the role of mixing and breaking up. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The figure is a schematic diagram of the structure of a clean gas foam mixer.
[0017] Figure 2 The figure is a schematic diagram of the structure of the second flow guide pipe in a clean gas foam mixer.
[0018] Among them, there are a mixer 1, a first connecting pipe 2, a second connecting pipe 3, a mixing chamber 4, a mixing pipe 5, a first guide pipe 6, a second guide pipe 7, a through hole 8, a vortex plate 9, a hole groove 10, a gas connecting pipe 11, and a foam liquid connecting pipe 12. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figures 1-2In an embodiment of the utility model, a clean gas foam mixer comprises a mixer 1 connected with a first connecting pipe 2 and a second connecting pipe 3 at both ends respectively, the mixer 1 has a mixing chamber 4 inside, a gas connecting pipe 11 and a foam liquid connecting pipe 12 are sequentially penetrated through the outer wall of the mixer 1 along its length direction, a mixing pipe 5 is installed in the mixer 1, the mixing pipe 5 comprises a first guide pipe 6 and a second guide pipe 7, one end of the first guide pipe 6 is fixedly connected to the gas connecting pipe 11, one end of the second guide pipe 7 is fixedly connected to the foam liquid connecting pipe 12, a plurality of through holes 8 are penetrated through the outer walls of the first guide pipe 6 and the second guide pipe 7, and a vortex plate 9 is fixedly connected to the outer walls of the first guide pipe 6 and the second guide pipe 7.
[0021] The utility model adopts the above scheme. When in use, fire water enters the mixing chamber 2 of the mixer 1 from the first connecting pipe 2, while clean gas enters the first guide pipe 6 from the gas connecting pipe 11, and enters the mixing chamber 2 from the through hole 8 on the first guide pipe 6, so that the clean gas is mixed with the fire water to form a clean gas mixed liquid and moves along the vortex plate 9 to the second guide pipe 7, and the foam liquid enters the second guide pipe 7 through the foam liquid connecting pipe 12, and enters the mixing chamber 2 through the through hole 8 on the second guide pipe 7 to mix with the clean gas mixed liquid to form a clean gas foam fire extinguishing agent, and moves along the vortex plate 9 on the second guide pipe 7 until it is output from the second connecting pipe 3. The mixing effect is good, and the clean gas content in the generated clean gas foam fire extinguishing agent is much greater than that of the original technology, and the actual fire extinguishing situation also has obvious advantages, the fire extinguishing time is shortened, the foaming situation is good, and the device has high integration, simple structure and convenient use.
[0022] Specifically, the above-mentioned clean gas is preferably heptafluoropropane, but is not limited to heptafluoropropane. It can also be perfluorohexanone, trifluoromethyl iodide, perfluoropropane, perfluorobutane, perfluoroethane, dichlorodifluoroethane, chlorodifluoromethane, chlorotetrafluoroethane, pentafluoroethane, trifluoromethane, hexafluoropropane, argon, nitrogen, carbon dioxide, a mixed gas consisting of argon, nitrogen and carbon dioxide, etc.
[0023] The above-mentioned foam liquid refers to aqueous film-forming foam liquid, but is not limited to aqueous film-forming foam liquid. It can also be protein foam liquid, fluoroprotein foam liquid, synthetic foam liquid, anti-solvent foam liquid, film-forming fluoroprotein foam liquid, anti-solvent protein foam liquid, anti-solvent fluoroprotein foam liquid, anti-solvent synthetic foam liquid, anti-solvent aqueous film-forming foam liquid, anti-solvent film-forming fluoroprotein foam liquid, medium-multiple foam liquid, high-multiple foam liquid, high, medium and low-multiple foam liquid, anti-solvent high, medium and low-multiple foam liquid, Class A foam fire extinguishing agent, etc.
[0024] Specific combination Figure 1In one embodiment of the utility model, the first guide pipe 6 and the second guide pipe 7 are both coaxially arranged with the mixer 1, and the first guide pipe 6 and the second guide pipe 7 are fixed to each other, so that the flow direction of the clean gas in the first guide pipe 6 and the flow direction of the foam liquid in the second guide pipe 7 are consistent with the flow direction of the fire water, so as to reduce the mutual impact between the liquids and the vibration caused thereby, which is more conducive to the mixing of the clean gas foam mixture. At the same time, the vortex plates 9 on the first guide pipe 6 and the second guide pipe 7 can play a good guiding role on the fluid in the mixing chamber 4.
[0025] Specific combination Figure 1 , Figure 2 In one embodiment of the utility model, a plurality of holes 10 are formed on the outer wall of the vortex plate 9; the vortex plate 9 is in a trumpet-shaped spiral shape.
[0026] Through the design of the vortex plate 9 and the hole groove 10, the mixed liquid is continuously rotated and collided along the vortex plate 9 in the mixing chamber 4, and the hole groove 10 is used to break up the clean gas foam mixed liquid, thereby playing a role of mixing and breaking up, so as to further improve the mixing effect of the clean gas foam fire extinguishing agent.
[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A clean gas foam mixer, characterized in that: The invention comprises a mixer (1) whose two ends are respectively connected to a first connecting pipe (2) and a second connecting pipe (3), wherein the mixer (1) has a mixing chamber (4) inside, and a gas connecting pipe (11) and a foam liquid connecting pipe (12) are sequentially penetrated through the outer wall of the mixer (1) along its length direction, wherein a mixing pipe (5) is installed in the mixer (1), wherein the mixing pipe (5) comprises a first flow guide pipe (6) and a second flow guide pipe (7), wherein one end of the first flow guide pipe (6) is fixedly connected to the gas connecting pipe (11), and one end of the second flow guide pipe (7) is fixedly connected to the foam liquid connecting pipe (12), wherein the outer walls of the first flow guide pipe (6) and the second flow guide pipe (7) are both penetrated with a plurality of through holes (8), and the outer walls of the first flow guide pipe (6) and the second flow guide pipe (7) are both fixedly connected with vortex plates (9).
2. A clean gas foam mixer according to claim 1, characterized in that: The first flow guide tube (6) and the second flow guide tube (7) are both coaxially arranged with the mixer (1), and the first flow guide tube (6) and the second flow guide tube (7) are fixed to each other.
3. A clean gas foam mixer according to claim 1, characterized in that: The outer wall of the vortex plate (9) is provided with a plurality of hole grooves (10).
4. A clean gas foam mixer according to claim 1, characterized in that: The vortex plate (9) is in a trumpet-shaped spiral shape.