Heptafluoropropane foaming device
By using a constant temperature module and a ring tube combination in the heptafluoropropane foaming device, heptafluoropropane is vaporized and evenly distributed in a low-temperature environment, the foaming problem of heptafluoropropane foam in a low-temperature environment is solved, the fire extinguishing effect and utilization rate are improved, and the fire extinguishing effect and utilization are enhanced. Fire protection capability of low boiling point combustible liquids.
Patent Information
- Application Number
- CN202420182700.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-25
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-25
AI Technical Summary
The heptafluoropropane foam has poor foaming effect and low utilization rate in low temperature environments, resulting in unsatisfactory fire extinguishing effect, especially in low temperature environments in northern regions.
A heptafluoropropane foaming device including a main pipe, a sealing sleeve, annular tube and a constant temperature module was designed. By setting a constant temperature module and annular tube in the sleeve, it ensures that the heptafluoropropane is vaporized in advance and distributed evenly in the foam before release. The volume of the ring pipe is designed according to the maximum flow rate, foaming multiple and vaporization time.
Maintaining the most suitable vaporization temperature of heptafluoropropane in a low-temperature environment improves its utilization rate and fire extinguishing effect, solves the problem of poor foaming effect, and enhances the fire protection ability of low-boiling combustible liquids.
Smart Images
Figure CN222195791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire-fighting equipment manufacturing and application, in particular to a heptafluoropropane foaming device. Background Art
[0002] Low-boiling-point flammable liquids such as propylene oxide and n-pentane are traditionally equipped with air foam fire extinguishing systems. However, multiple tests and studies within the industry have shown that air foam is only effective for ordinary flammable liquids, and is almost ineffective in extinguishing low-boiling-point flammable liquids, and some fires are even impossible to control. In response to this phenomenon, heptafluoropropane gas foam fire extinguishing technology was later introduced, with heptafluoropropane replacing traditional air.
[0003] The boiling point of heptafluoropropane is -16.4℃, and the working temperature range of heptafluoropropane is -10℃ to 50℃. Within this temperature range, heptafluoropropane can exert the best fire extinguishing and protection effects. When the temperature is lower than -10℃, the volatility of heptafluoropropane will decrease, which will also affect its fire extinguishing effect. In the north and other regions, the ambient temperature is lower than the working temperature range of heptafluoropropane, resulting in poor foaming effect of heptafluoropropane foam solution, low utilization rate of heptafluoropropane, unsatisfactory actual fire extinguishing situation, etc. In view of this phenomenon, a heptafluoropropane foaming device has been introduced after research to solve the above-mentioned technical problems. Utility Model Content
[0004] The purpose of the utility model is to provide a heptafluoropropane foaming device to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A heptafluoropropane foaming device comprises a main pipe, a sealing sleeve and a foam releasing device, wherein an annular pipe is installed inside the sealing sleeve, the bottom end of the annular pipe is connected to the main pipe outside the sealing sleeve, the top end of the annular pipe is connected to the foam releasing device outside the sealing sleeve, and a constant temperature module is installed on the top of the sealing sleeve.
[0007] As a further solution of the utility model: the constant temperature module includes a heating plate, a temperature sensor and a temperature control switch, the temperature sensor is electrically connected to the temperature control switch, and the temperature control switch is electrically connected to the heating plate.
[0008] As a further solution of the utility model: the other end of the main pipe is connected to the heptafluoropropane foam mixed liquid pipeline.
[0009] As a further solution of the utility model: the annular pipe is a pressure-bearing pipe.
[0010] As a further solution of the utility model: the volume of the annular tube is designed according to the maximum flow rate of the supporting system, the foaming multiple of the foam and the vaporization time of heptafluoropropane.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. The utility model maintains the most suitable vaporization temperature of heptafluoropropane in the sleeve in a low-temperature environment by arranging a constant temperature module and a ring tube combination in the sleeve, thereby solving the current foaming problem of heptafluoropropane foam in a low-temperature environment.
[0013] 2. The volume of the annular tube provided in the utility model enables the mixed medium to be vaporized when it enters the annular tube from the main pipe, so that the liquid HFC-227ea in the main pipe can be vaporized in advance before being released, so that it is evenly distributed in the foam, thereby improving the utilization rate of HFC-227ea and achieving a better fire extinguishing effect.
[0014] 3. The ring tube of the utility model can be designed with the best total volume according to the maximum flow of the supporting system, the foaming multiple of the foam and the vaporization time of heptafluoropropane. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a heptafluoropropane foaming device.
[0016] Figure 2 This is a schematic diagram of the planar structure of a heptafluoropropane foaming device.
[0017] Figure 3 This is the overall appearance of a heptafluoropropane foaming device.
[0018] 1. Main pipe; 2. Ring pipe; 3. Foam release device; 4. Sealing sleeve; 5. Constant temperature module; 501. Heating plate; 502. Temperature sensor; 503. Temperature control switch. 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 Figure 1-3In the embodiment of the utility model, a heptafluoropropane foaming device includes a main pipe 1, a sealing sleeve 4 and a foam releasing device 3. An annular pipe 2 is installed inside the sealing sleeve 4. The bottom end of the annular pipe 2 is connected to the main pipe 1 outside the sealing sleeve 4. The function of the annular pipe 2 is to vaporize the liquid heptafluoropropane in the main pipe 1 in advance before release and evenly distribute it in the foam. The top of the annular pipe 2 is connected to the foam releasing device 3 outside the sealing sleeve 4. The function of the foam releasing device 3 is to release the fire extinguishing agent to the protection area. A constant temperature module 5 is installed on the top of the sealing sleeve 4. The constant temperature module 5 is connected to an external power supply. The constant temperature module 5 includes a heating plate 501, a temperature sensor 502 and a temperature control switch 503. The temperature sensor 502 is electrically connected to the temperature control switch 503. The temperature control switch 503 is electrically connected to the heating plate 501. The working principle of the constant temperature module 5 is that the temperature sensor 502 monitors the sealing sleeve 4 in real time. The external power supply is used to supply power to the heating plate 501, the temperature sensor 502 and the temperature control switch 503. Each structure in the constant temperature module 5 is that the other end of the main pipe 1 is connected to the heptafluoropropane foam mixed liquid pipeline.
[0021] The annular pipe 2 is a pressure-bearing pipe, which can work normally under high pressure or high temperature environment and has high corrosion resistance, wear resistance and durability, thereby making the annular pipe 2 more durable.
[0022] The volume of the ring pipe 2 is designed according to the maximum flow rate of the supporting system, the foaming multiple of the foam and the vaporization time of heptafluoropropane.
[0023] The utility model not only solves the problem of the foaming effect of heptafluoropropane foam solution, but also solves the problem of the volatility of heptafluoropropane in a low-temperature environment, further supplements the technical defects of fire protection of low-boiling point flammable liquid storage tanks, and prevents fire from causing more losses and damaging the natural environment.
[0024] The working principle of the utility model is:
[0025] In a low-temperature environment, the constant temperature module 5 in the sealing sleeve 4 is connected to an external power supply, and the temperature in the sealing sleeve 4 is maintained at the most suitable vaporization state of HFC-227ea. The medium enters the annular tube 2 from the main tube 1, and the HFC-227ea in the annular tube 2 gradually vaporizes. The foam wraps the HFC-227ea gas to form small and evenly distributed microbubbles, which eventually flow out through the foam release device 3.
[0026] 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 heptafluoropropane foaming device, comprising a main pipe (1), a sealing sleeve (4) and a foam releasing device (3), Features: An annular tube (2) is installed inside the sealing sleeve (4); the bottom end of the annular tube (2) is connected to a main tube (1) located outside the sealing sleeve (4); the top end of the annular tube (2) is connected to a foam release device (3) located outside the sealing sleeve (4); and a constant temperature module (5) is installed on the top of the sealing sleeve (4).
2. A heptafluoropropane foaming device according to claim 1, Features: The constant temperature module (5) comprises a heating plate (501), a temperature sensor (502) and a temperature control switch (503); the temperature sensor (502) is electrically connected to the temperature control switch (503); and the temperature control switch (503) is electrically connected to the heating plate (501).
3. A heptafluoropropane foaming device according to claim 1, Features: The other end of the main pipe (1) is connected to a heptafluoropropane foam mixed liquid pipeline.
4. A heptafluoropropane foaming device according to claim 1, Features: The annular pipe (2) is a pressure-bearing pipe.
5. A heptafluoropropane foaming device according to claim 1, Features: The volume of the annular tube (2) is designed according to the maximum flow rate of the supporting system, the foaming multiple of the foam, and the vaporization time of heptafluoropropane.