CN213347565U

CN213347565U - Compressed air foam fire extinguishing system

Info

Publication number: CN213347565U
Application number: CN202021849671.2U
Authority: CN
Inventors: 谷建忠; 夏其溢; 胡志炯; 雷杰; 周均伟; 彭灿; 王江林; 郑晓东; 黄辉; 谭石荣; 石峥嵘
Original assignee: Pan Long Safety Technology Co ltd
Current assignee: Pan Long Safety Technology Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-04
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a compressed air foam fire extinguishing systems, including compressed air basin, the mixed liquid basin of foam and mixing arrangement, the mixing arrangement entrance side is equipped with foam mixing liquid pipeline and compressed air pipeline, and the mixing arrangement outlet side is equipped with an at least injection pipeline, compressed air pipeline with the entry end of the mixed liquid basin of foam all with the exit end intercommunication of compressed air basin, the exit end of the mixed liquid basin of foam with the entry end intercommunication of foam mixing liquid pipeline. The utility model has the advantages of simple structure, low cost, long fire extinguishing duration, good fire extinguishing effect and the like.

Description

Compressed air foam fire extinguishing system

Technical Field

The utility model relates to a fire extinguishing systems especially relates to a compressed air foam fire extinguishing systems.

Background

The common foam fire extinguishing system generally sucks air to form foam under negative pressure when a foam mixed liquid is sprayed out of spraying parts such as a foam gun and a foam cannon, and belongs to a negative pressure type. The compressed air foam fire extinguishing system features that compressed air is injected directly into foam mixture and is of positive pressure type. Compared with the foam sprayed by a common foam fire extinguishing system, the foam sprayed by the foam fire extinguishing system is more fully mixed and better foamed, and the indexes of the foam such as uniformity, fineness, liquid separation time and the like are far better than those of the common foam.

At present, a compressed air foam fire extinguishing system is mainly arranged on a fire truck (namely, is movable), is limited by the space in the fire truck, and has a very complex structure and very difficult maintenance. The air compressor and other equipment which are installed on a vehicle are limited by the size, the parameters are small, and the application requirements of a large converter transformer, a large oil depot and the like cannot be met. And many functions of the vehicle-mounted compressed air foam fire extinguishing system are operated by firemen, so that the system is strong in specificity, high in requirement on operating personnel and not beneficial to realizing automation and intellectualization.

Some fixed compressed air foam fire extinguishing systems adopt a conventional foam proportion mixing device, are large in size, complex in structure and high in requirements on water source flow and pressure, and are limited in application because the proportion of compressed air and foam mixed liquid is fixed and cannot be adjusted.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a simple structure, with low costs, the duration of putting out a fire is long, the compressed air foam fire extinguishing system that the fire control effect is good.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a compressed air foam fire extinguishing system, includes compressed air basin, foam mixed liquid basin and mixing arrangement, the mixing arrangement inlet side is equipped with foam mixed liquid pipeline and compressed air pipeline, and the mixing arrangement outlet side is equipped with at least one injection pipeline, compressed air pipeline with the entry end of foam mixed liquid basin all with the exit end intercommunication of compressed air basin, the exit end of foam mixed liquid basin with the entry end intercommunication of foam mixed liquid pipeline.

As a further improvement of the above technical solution: and a first flow meter is arranged on the foam mixed liquid pipeline, and a flow regulating valve is arranged on the compressed air pipeline.

As a further improvement of the above technical solution: and a second flow meter is arranged on the compressed air pipeline and is positioned between the flow regulating valve and the mixing device.

As a further improvement of the above technical solution: the compressed air foam fire extinguishing system further comprises an overflow pipeline, a switch valve is arranged on the overflow pipeline, and the inlet end of the overflow pipeline is communicated with the inlet end of the foam mixed liquid pipeline.

As a further improvement of the above technical solution: and a first pressure transmitter is arranged on the compressed air pipeline.

As a further improvement of the above technical solution: and the outlet ends of the foam mixed liquid pipeline and the compressed air pipeline are respectively provided with a one-way valve.

As a further improvement of the above technical solution: and a second pressure transmitter is arranged on the compressed air storage tank, and a third pressure transmitter and a liquid level meter are arranged on the foam mixed liquid storage tank.

As a further improvement of the above technical solution: the compressed air foam fire extinguishing system further comprises a control module, wherein the compressed air storage tank, the foam mixed liquid pipeline, the compressed air pipeline and the injection pipeline are all electrically connected with the control module.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a compressed air foam fire extinguishing system, foam stoste obtains the foam mixture liquid and saves in the foam mixture liquid storage tank according to required ratio premix, compressed air stores in the compressed air storage tank, when need put out a fire, compressed air carries the foam mixture liquid in the foam mixture liquid storage tank to mixing arrangement through foam mixture liquid pipeline on the one hand, on the other hand compressed air gets into mixing arrangement through compressed air pipeline, accomplish the mixture of foam mixture liquid and compressed air in mixing arrangement, then carry to corresponding protection zone through spraying the pipeline, system architecture is simple, reliability, low cost, conveniently in time add the foam mixture liquid, the duration of putting out a fire is long, the fire extinguishing effect is good.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the compressed air foam fire extinguishing system of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the compressed air foam fire extinguishing system of the present invention.

The reference numerals in the figures denote: 1. a compressed air storage tank; 11. a second pressure transmitter; 2. a foam mixed liquid storage tank; 21. a third pressure transmitter; 22. a liquid level meter; 3. a mixing device; 4. a foam mixed liquid pipeline; 41. a first flow meter; 5. a compressed air line; 51. a flow regulating valve; 52. a second flow meter; 53. a first pressure transmitter; 6. an injection line; 61. a partition valve; 62. a foam nozzle; 63. foam blasting; 7. an overflow line; 71. an on-off valve; 8. a one-way valve; 9. and a control module.

Detailed Description

The invention is described in further detail below with reference to the drawings and specific examples.

Example one

Fig. 1 shows the utility model discloses a compressed air foam fire extinguishing systems's an embodiment, the compressed air foam fire extinguishing systems of this embodiment, including compressed air basin 1, foam mixture basin 2 and mixing

arrangement

3, 3 entrance sides of mixing arrangement are equipped with foam mixture liquid pipeline 4 and compressed air pipeline 5, and the strip injection pipeline 6 is established to 3 exit sides of mixing arrangement, and compressed air pipeline 5 and foam mixture liquid basin 2's entry end all communicates with compressed air basin 1's exit end, and foam mixture liquid basin 2's exit end communicates with foam mixture liquid pipeline 4's entry end. The number of the injection pipelines 6 can be determined according to the number of the actual protection areas, the injection pipelines 6 are provided with injection components such as foam nozzles 62 or foam guns 63, and the opening and closing of the corresponding injection components are controlled by the partition valves 61.

This compressed air foam fire extinguishing systems, foam stoste and water are mixed according to required ratio premix and are obtained the foam and mix liquid and save in foam mixed liquid basin 2, compressed air stores in compressed air basin 1, when need put out a fire, compressed air gets into in the mixed liquid basin 2 of foam on the one hand, mix the liquid through the mixed liquid pipeline 4 transport to mixing arrangement 3 of foam in the mixed liquid basin 2 of foam, on the other hand compressed air gets into mixing arrangement 3 through compressed air pipeline 5, accomplish the mixture of mixed liquid of foam and compressed air in mixing arrangement 3, then carry to corresponding protection area through injection pipeline 6, system structure is simple, reliability, low cost, conveniently in time add the mixed liquid of foam, the duration of putting out a fire is long, the fire extinguishing effect is good.

Example two

Fig. 2 shows another embodiment of the compressed air foam fire extinguishing system of the present invention, on the basis of the first embodiment, in this embodiment, the foam mixing liquid pipeline 4 is provided with a first flow meter 41, and the compressed air pipeline 5 is provided with a flow regulating valve 51.

The compressed air foam fire extinguishing system can monitor the flow of foam mixed liquid according to the first flowmeter 41, can adjust the flow of the compressed air pipeline 5 through the flow adjusting valve 51, further adjusts the ratio of the foam mixed liquid to the compressed air, and can be applied to different scenes.

Further, in the present embodiment, the second flow meter 52 is disposed on the compressed air pipe 5, and the second flow meter 52 is located between the flow regulating valve 51 and the mixing device 3. The flow rate of the compressed air is detected by the second flowmeter 52, and the flow regulating valve 51 continuously adjusts and corrects the values according to the values of the second flowmeter 52 and the first flowmeter 41, so that the ratio of the foam mixed liquid to the compressed air reaches a set value.

Further, in this embodiment, the compressed air foam fire extinguishing device further includes an overflow pipeline 7, a switch valve 71 is disposed on the overflow pipeline 7, and an inlet end of the overflow pipeline 7 is communicated with an inlet end of the foam mixed liquid pipeline 4. When the foam mixed liquid is output from the foam mixed liquid storage tank 2 and the partition valve 61 is not opened, the switch valve 71 is opened to discharge the foam mixed liquid from the overflow pipeline 7, so that the foam mixed liquid is prevented from continuously entering the mixing device 3 and being damaged. Of course, in other embodiments, the output foam mixed liquid may be returned to foam mixed liquid tank 2. The partition valve 61 and the switch valve 71 are preferably electrically operated valves, so that automatic and intelligent control is conveniently realized.

Further, in the present embodiment, the compressed air pipeline 5 is provided with a first pressure transmitter 53. The pressure of the compressed air pipeline 5 can be monitored in real time through the first pressure transmitter 53, and the safe and stable operation of the system is ensured.

In the present embodiment, as a preferable technical solution, the outlet ends of the foam mixture pipe 4 and the compressed air pipe 5 are both provided with a check valve 8. By arranging the check valves 8, backflow of each pipeline can be prevented, and the reliability of the system is improved.

In the preferred embodiment, the compressed air storage tank 1 is provided with a second pressure transmitter 11, and the foam mixed liquid storage tank 2 is provided with a third pressure transmitter 21 and a liquid level meter 22. The pressure in the compressed air storage tank 1 is monitored through the second pressure transmitter 11, the pressure in the foam mixed liquid storage tank 2 is monitored through the third pressure transmitter 21, the liquid level of the foam mixed liquid is monitored through the liquid level meter 22, and when the parts are abnormal, the system is interrupted and stopped in time, so that the unsafe condition is prevented.

Further, in this embodiment, the compressed air foam fire extinguishing system further includes a control module 9, and the compressed air storage tank 1, the foam mixed liquid storage tank 2, the foam mixed liquid pipeline 4, the compressed air pipeline 5 and the injection pipeline 6 are all electrically connected to the control module 9, that is, the control module 9 is used to realize the automatic and intelligent control of the compressed air foam fire extinguishing system. In particular, as shown by the dashed line in fig. 2, the compressed air tank 1 and the second pressure transmitter 11 thereon are electrically connected to the control module 9; the third pressure transmitter 21 and the liquid level meter 22 on the foam mixed liquid storage tank 2 are electrically connected with the control module 9; the first flow meter 41 on the foam mixed liquid pipeline 4 is electrically connected with the control module 9; the flow regulating valve 51, the second flowmeter 52 and the first pressure transmitter 53 on the compressed air pipeline 5 are electrically connected with the control module 9; the partition valve 61 on the injection line 6 is electrically connected to the control module 9. It should be noted that the control module 9 collects values of each component (for example, the first flowmeter 41, the second flowmeter 52, etc.), adjusts the opening degree and opening and closing of each valve, and starts and stops the corresponding component, etc., and the compressed air foam fire extinguishing system can be implemented by the existing hardware functions, and is improved in that the connection relationship among the components and the components constituting the system does not need to be improved by a software program.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. A compressed air foam fire suppression system, characterized by: including compressed air basin (1), foam mixed liquid basin (2) and mixing arrangement (3), mixing arrangement (3) entrance side is equipped with foam mixed liquid pipeline (4) and compressed air pipeline (5), and mixing arrangement (3) outlet side is equipped with at least one injection pipeline (6), compressed air pipeline (5) with the entry end of foam mixed liquid basin (2) all with the exit end intercommunication of compressed air basin (1), the exit end of foam mixed liquid basin (2) with the entry end intercommunication of foam mixed liquid pipeline (4).

2. A compressed air foam fire suppression system according to claim 1, wherein: and a first flow meter (41) is arranged on the foam mixed liquid pipeline (4), and a flow regulating valve (51) is arranged on the compressed air pipeline (5).

3. A compressed air foam fire suppression system according to claim 2, wherein: and a second flow meter (52) is arranged on the compressed air pipeline (5), and the second flow meter (52) is positioned between the flow regulating valve (51) and the mixing device (3).

4. A compressed air foam fire suppression system according to claim 1, wherein: the foam mixing liquid pipeline is characterized by further comprising an overflow pipeline (7), wherein a switch valve (71) is arranged on the overflow pipeline (7), and the inlet end of the overflow pipeline (7) is communicated with the inlet end of the foam mixing liquid pipeline (4).

5. A compressed air foam fire suppression system according to claim 4, wherein: and a first pressure transmitter (53) is arranged on the compressed air pipeline (5).

6. A compressed air foam fire suppression system according to claim 1, wherein: and the outlet ends of the foam mixed liquid pipeline (4) and the compressed air pipeline (5) are respectively provided with a one-way valve (8).

7. A compressed air foam fire suppression system according to claim 1, wherein: the compressed air storage tank (1) is provided with a second pressure transmitter (11), and the foam mixed liquid storage tank (2) is provided with a third pressure transmitter (21) and a liquid level meter (22).

8. A compressed air foam fire suppression system according to any one of claims 1 to 7, wherein: the device is characterized by further comprising a control module (9), wherein the compressed air storage tank (1), the foam mixed liquid storage tank (2), the foam mixed liquid pipeline (4), the compressed air pipeline (5) and the injection pipeline (6) are electrically connected with the control module (9).