Heptafluoropropane foam proportional mixing equipment

Abstract

The invention relates to the technical field of mixing equipment, and discloses heptafluoropropane foam proportional mixing equipment which comprises a conveying pipe body, the lower portion of one end of the conveying pipe body communicates with a first heptafluoropropane storage tank, and a pressure gauge is fixed to the upper portion of the first heptafluoropropane storage tank; the mixing pipe is arranged at the end, away from the first heptafluoropropane storage tank, of the conveying pipe main body, so that foam in the foam storage tank is mixed with water output by the water inlet pipe and then input into the mixing pipe, meanwhile, the first electric valve is opened, and the first heptafluoropropane storage tank is connected with the conveying pipe main body through the first electric valve. The heptafluoropropane is released to be mixed with foam, so that the heptafluoropropane is conveyed to a fire scene by the conveying pipe main body, and the problems that the heptafluoropropane always cannot form uniform fire extinguishing concentration in a short time when the fire scene is relatively large or the number of obstacles is relatively large due to the fact that the heptafluoropropane jets gas, and the cost is relatively high when the heptafluoropropane is used are solved.

Description

Technical Field

[0001] The invention relates to the technical field of mixing equipment, in particular to a heptafluoropropane foam proportion mixing equipment. Background Art

[0002] Heptafluoropropane is a clean gas chemical fire extinguishing agent that mainly uses chemical fire extinguishing and also has physical fire extinguishing effects. It belongs to polyfluorinated alkanes with a molecular formula of C3HF7. It is colorless, odorless, low-toxic, non-conductive, does not pollute the protected object, and will not cause damage to property and precision facilities. Heptafluoropropane can reliably extinguish Class B and C fires and electrical fires at a lower fire extinguishing concentration. It has a small storage space, a high critical temperature, a low critical pressure, and can be liquefied and stored at room temperature. It does not contain particles or oily residues after release and has no destructive effect on the atmospheric ozone layer. The heptafluoropropane fire extinguishing system does not extinguish fires by generating foam, but rather utilizes the efficient fire extinguishing performance of heptafluoropropane gas. When heptafluoropropane is released to the fire scene, it will quickly vaporize and diffuse, lowering the fire scene temperature while depriving the flame of oxygen, thereby achieving the purpose of extinguishing the fire. In addition, heptafluoropropane also has good electrical insulation and can be used to extinguish electrical fires.

[0003] Currently, heptafluoropropane is often directly introduced into the fire scene through a pipeline when in use, and heptafluoropropane sprays out a gaseous fluid. When the fire scene is large or there are many obstacles, heptafluoropropane often cannot form a uniform fire extinguishing concentration in a short time, and heptafluoropropane has a high cost when in use. Therefore, a heptafluoropropane foam proportioning mixing device is needed to solve the above problems. Summary of the invention

[0004] In order to solve the problem that HFC-227ea sprays out a gaseous fluid, when the fire scene is large or there are many obstacles, HFC-227ea often cannot form a uniform fire extinguishing concentration in a short time, and the cost of HFC-227ea is relatively high when used, the present invention provides a HFC-227ea foam proportioning mixing device to solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A heptafluoropropane foam proportion mixing device comprises a transmission pipe main body, wherein a first heptafluoropropane storage tank is connected below one end of the transmission pipe main body, a pressure gauge is fixed above the first heptafluoropropane storage tank, a first electric valve is arranged at the connection between the first heptafluoropropane storage tank and the transmission pipe main body, a mixing pipe is connected to the end of the transmission pipe main body away from the first heptafluoropropane storage tank, a foam storage tank is connected below the mixing pipe, a water inlet pipe is connected below the end of the mixing pipe away from the transmission pipe main body, a pressure water pipe is connected below the end of the water inlet pipe away from the mixing pipe, and the other end of the pressure water pipe is connected to the inside of the foam storage tank.

[0007] Furthermore, two connecting pipes are symmetrically connected on both sides of one end of the transmission pipe body close to the first heptafluoropropane storage tank, a second electric valve is provided under each connecting pipe, and the bottom end of the connecting pipe is connected to the second heptafluoropropane storage tank through a flange.

[0008] Furthermore, a third electric valve is provided at one end of the water inlet pipe close to the mixing pipe, and a third electric valve is provided at one end of the pressure water pipe close to the foam storage tank.

[0009] Furthermore, the two second electric valves are electrically connected to pressure gauges respectively, and the storage capacity of the second heptafluoropropane storage tank is the same as the storage capacity of the first heptafluoropropane storage tank.

[0010] Furthermore, the position of the third electric valve on the water inlet pipe is located between the pressure water pipe and the mixing pipe, and one end of the water inlet pipe away from the mixing pipe is connected to a water pipe.

[0011] Furthermore, the second heptafluoropropane storage tank is disposed between the foam storage tank and the first heptafluoropropane storage tank, and the second electric valve is located above the flange.

[0012] Furthermore, the two third electric valves are both electrically connected to the fire alarm, and the pressure water pipe is connected to the top of the side of the foam storage tank.

[0013] Furthermore, the two connecting pipes are consistent in shape and size and are symmetrically arranged.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, a mixing tube is arranged at one end of the transmission pipe body away from the first heptafluoropropane storage tank, so that the foam inside the foam storage tank is mixed with the water output by the water inlet pipe and then input into the mixing tube, and at the same time, the first electric valve is opened to release heptafluoropropane to mix with the foam, so that the transmission pipe body is transmitted to the fire scene, which solves the problem that heptafluoropropane sprays out a gas flow, when the fire scene is large or there are many obstacles, heptafluoropropane often cannot form a uniform fire extinguishing concentration in a short time, and the cost of heptafluoropropane is relatively high when used.

[0016] 2. In the present invention, a connecting pipe is connected to one end of the transmission pipe body close to the first heptafluoropropane storage tank, and then the second heptafluoropropane storage tank is connected to the connecting pipe, so that when the heptafluoropropane reserves inside the first heptafluoropropane storage tank are insufficient, the heptafluoropropane inside the second heptafluoropropane storage tank is transmitted to the inside of the transmission pipe body through the connecting pipe by opening the second electric valve, thereby avoiding the problem of reduced fire extinguishing efficiency due to insufficient heptafluoropropane reserves inside the first heptafluoropropane storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 is a schematic diagram of a three-dimensional structure according to an embodiment of the present application;

[0019] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the three-dimensional structure in the embodiment shown;

[0020] Figure 3 yes Figure 1 Schematic diagram of the structure of the first heptafluoropropane storage tank in the embodiment shown

[0021] Figure 4 yes Figure 1 A three-dimensional schematic diagram of a local A structure in the embodiment shown;

[0022] Figure 5 yes Figure 2 A three-dimensional schematic diagram of a local B structure in the illustrated embodiment.

[0023] The meanings of the reference numerals in the figure are: 1. Transmission pipe body; 2. Connecting pipe; 3. First heptafluoropropane storage tank; 4. First electric valve; 5. Second electric valve; 6. Flange; 7. Second heptafluoropropane storage tank; 8. Mixing pipe; 9. Foam storage tank; 10. Water inlet pipe; 11. Pressure water pipe; 12. Third electric valve; 13. Pressure gauge. DETAILED DESCRIPTION

[0024] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a heptafluoropropane foam proportioning device, specifically including the following embodiments:

[0026] Example 1

[0027] The utility model comprises a transmission pipe body 1, wherein a first heptafluoropropane storage tank 3 is connected to the lower part of one end of the transmission pipe body 1, a pressure gauge 13 is fixed above the first heptafluoropropane storage tank 3, a first electric valve 4 is arranged at the connection between the first heptafluoropropane storage tank 3 and the transmission pipe body 1, a mixing pipe 8 is connected to the end of the transmission pipe body 1 away from the first heptafluoropropane storage tank 3, a foam storage tank 9 is connected to the lower part of the mixing pipe 8, a water inlet pipe 10 is connected to the lower part of the end of the mixing pipe 8 away from the transmission pipe body 1, a pressure water pipe 11 is connected to the lower part of the end of the water inlet pipe 10 away from the mixing pipe 8, and the other end of the pressure water pipe 11 is connected to the inside of the foam storage tank 9, so that heptafluoropropane is mixed with foam inside the transmission pipe body 1.

[0028] Specifically, a third electric valve 12 is provided at one end of the water inlet pipe 10 close to the mixing tube 8, and a third electric valve 12 is provided at one end of the pressure water pipe 11 close to the foam storage tank 9. The third electric valve 12 on the water inlet pipe 10 is located between the pressure water pipe 11 and the mixing tube 8. The end of the water inlet pipe 10 away from the mixing tube 8 is connected to a water pipe. Both third electric valves 12 are electrically connected to the fire alarm. The pressure water pipe 11 is connected to the upper side of the foam storage tank 9, so that the mixing ratio of the foam input into the transmission pipe body 1 is convenient to control.

[0029] Example 2

[0030] The utility model comprises a transmission pipe body 1, wherein a first heptafluoropropane storage tank 3 is connected to the lower part of one end of the transmission pipe body 1, a pressure gauge 13 is fixed above the first heptafluoropropane storage tank 3, a first electric valve 4 is arranged at the connection between the first heptafluoropropane storage tank 3 and the transmission pipe body 1, a mixing pipe 8 is connected to the end of the transmission pipe body 1 away from the first heptafluoropropane storage tank 3, a foam storage tank 9 is connected to the lower part of the mixing pipe 8, a water inlet pipe 10 is connected to the lower part of the end of the mixing pipe 8 away from the transmission pipe body 1, a pressure water pipe 11 is connected to the lower part of the end of the water inlet pipe 10 away from the mixing pipe 8, and the other end of the pressure water pipe 11 is connected to the inside of the foam storage tank 9, so that heptafluoropropane is mixed with foam inside the transmission pipe body 1.

[0031] Specifically, a third electric valve 12 is provided at one end of the water inlet pipe 10 close to the mixing tube 8, and a third electric valve 12 is provided at one end of the pressure water pipe 11 close to the foam storage tank 9. The third electric valve 12 on the water inlet pipe 10 is located between the pressure water pipe 11 and the mixing tube 8. The end of the water inlet pipe 10 away from the mixing tube 8 is connected to a water pipe. Both third electric valves 12 are electrically connected to the fire alarm. The pressure water pipe 11 is connected to the upper side of the foam storage tank 9, so that the mixing ratio of the foam input into the transmission pipe body 1 is convenient to control.

[0032] As an optimization solution, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, two connecting pipes 2 are symmetrically connected on both sides of one end of the transmission pipe body 1 close to the first heptafluoropropane storage tank 3, a second electric valve 5 is provided under each connecting pipe 2, and the bottom end of the connecting pipe 2 is connected to the second heptafluoropropane storage tank 7 through a flange 6. When the heptafluoropropane reserves in the first heptafluoropropane storage tank 3 are insufficient, the second heptafluoropropane storage tank 7 is used to replenish it.

[0033] Specifically, the two second electric valves 5 are electrically connected to the pressure gauge 13 respectively, the reserve of the second heptafluoropropane storage tank 7 is the same as the reserve of the first heptafluoropropane storage tank 3, the second heptafluoropropane storage tank 7 is arranged between the foam storage tank 9 and the first heptafluoropropane storage tank 3, and the second electric valve 5 is located above the flange 6, so that the pressure gauge 13 controls the replenishment of the second heptafluoropropane storage tank 7 according to the reserve detected inside the first heptafluoropropane storage tank 3, and the two connecting pipes 2 are consistent in shape and size and are symmetrically arranged.

[0034] Compared with Example 1 and Example 2, Example 2 sets a mixing tube at one end of the transmission pipe body away from the first heptafluoropropane storage tank, so that the foam inside the foam storage tank is mixed with the water output by the water inlet pipe and then input into the mixing tube, and at the same time, by opening the first electric valve, heptafluoropropane is released to mix with the foam, so that the transmission pipe body is transmitted to the fire scene, which solves the problem that heptafluoropropane sprays out a gas flow, when the fire scene is large or there are many obstacles, heptafluoropropane often cannot form a uniform fire extinguishing concentration in a short time, and heptafluoropropane has a high cost when used.

[0035] Working principle: When a fire occurs in the scene, the fire alarm controls the first electric valve 4 to open, so that the HFC-227ea in the first HFC-227ea storage tank 3 is transmitted to the transmission pipe body 1. At the same time, the alarm controls the water pipe to output the water flow into the water inlet pipe 10. Part of the water flows into the foam storage tank 9 through the pressure water pipe 11, and the foam in the foam storage tank 9 is pushed out, so that the foam is transmitted to the mixing pipe 8. Part of the water flows into the mixing pipe 8 through the water inlet pipe 10, and is mixed with the foam and then output to the transmission pipe body 1. At this time, the HFC-227ea is mixed with the foam and then transmitted to the fire scene. When the HFC-227ea reserve in the first HFC-227ea storage tank 3 is insufficient, the pressure gauge 13 controls the second electric valve 5 to open, so that the HFC-227ea in the second HFC-227ea storage tank 7 is output to the connecting pipe 2 and then input to the transmission pipe body 1. At this time, the staff closes the first electric valve 4, so that the staff can replace the first HFC-227ea storage tank 3 or replenish the HFC-227ea in the first HFC-227ea storage tank 3. At the same time, the third electric valve 12 can control the speed of the water flow according to the fire situation, thereby adjusting the mixing ratio of the water flow and the foam.

[0036] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A heptafluoropropane foam proportioning device, comprising a transmission pipe body (1), characterized in that: The lower part of one end of the transmission pipe body (1) is connected to a first heptafluoropropane storage tank (3); a pressure gauge (13) is fixed above the first heptafluoropropane storage tank (3); a first electric valve (4) is provided at the connection between the first heptafluoropropane storage tank (3) and the transmission pipe body (1); the end of the transmission pipe body (1) away from the first heptafluoropropane storage tank (3) is connected to a mixing pipe (8); the lower part of the mixing pipe (8) is connected to a foam storage tank (9); the lower part of the end of the mixing pipe (8) away from the transmission pipe body (1) is connected to a water inlet pipe (10); the lower part of the end of the water inlet pipe (10) away from the mixing pipe (8) is connected to a pressure water pipe (11); the other end of the pressure water pipe (11) is connected to the inside of the foam storage tank (9).

2. A heptafluoropropane foam proportioning device according to claim 1, characterized in that: Two connecting pipes (2) are symmetrically connected to one end of the transmission pipe body (1) close to the first heptafluoropropane storage tank (3), a second electric valve (5) is provided below each connecting pipe (2), and the bottom end of the connecting pipe (2) is connected to the second heptafluoropropane storage tank (7) via a flange (6).

3. A heptafluoropropane foam proportioning device according to claim 1, characterized in that: A third electric valve (12) is provided at one end of the water inlet pipe (10) close to the mixing pipe (8), and a third electric valve (12) is provided at one end of the pressure water pipe (11) close to the foam storage tank (9).

4. A heptafluoropropane foam proportioning device according to claim 2, characterized in that: The two second electric valves (5) are electrically connected to a pressure gauge (13) respectively, and the storage capacity of the second heptafluoropropane storage tank (7) is the same as the storage capacity of the first heptafluoropropane storage tank (3).

5. A heptafluoropropane foam proportioning device according to claim 3, characterized in that: The position of the third electric valve (12) on the water inlet pipe (10) is located between the pressure water pipe (11) and the mixing pipe (8), and one end of the water inlet pipe (10) away from the mixing pipe (8) is connected to a water pipe.

6. A heptafluoropropane foam proportioning device according to claim 2, characterized in that: The second heptafluoropropane storage tank (7) is arranged between the foam storage tank (9) and the first heptafluoropropane storage tank (3), and the second electric valve (5) is located above the flange (6).

7. A heptafluoropropane foam proportioning device according to claim 3, characterized in that: The two third electric valves (12) are both electrically connected to the fire alarm, and the pressure water pipe (11) is connected to the upper side of the foam storage tank (9).

8. A heptafluoropropane foam proportioning device according to claim 2, characterized in that: The two connecting pipes (2) are consistent in shape and size and are symmetrically arranged.

Images