CN201681319U - Intelligent control unit of compressed air foam system - Google Patents

Intelligent control unit of compressed air foam system Download PDF

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Publication number
CN201681319U
CN201681319U CN2010201701928U CN201020170192U CN201681319U CN 201681319 U CN201681319 U CN 201681319U CN 2010201701928 U CN2010201701928 U CN 2010201701928U CN 201020170192 U CN201020170192 U CN 201020170192U CN 201681319 U CN201681319 U CN 201681319U
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China
Prior art keywords
foam
compressed air
pump
air pump
pipeline
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Expired - Fee Related
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CN2010201701928U
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Chinese (zh)
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王德凤
全猛
魏忠兴
杨晓果
余波
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Individual
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Individual
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Abstract

The utility model provides an intelligent control unit of a compressed air foam system, which mainly consists of a water pump and a pipeline communicated with the water pump. The control unit further comprises a foam mixing proportion controller, a foam tank, a foam pump, a foam humidity controller, a compressed air pump and an air outlet valve of the compressed air pump, the foam mixing proportion controller is respectively connected with the pipeline, the foam humidity controller and the foam pump, the foam humidity controller is further respectively connected with the compressed air pump and the air outlet valve of the compressed air pump, the foam pump obtains foam liquid from the foam tank to be inputted into the pipeline, and the air outlet valve of the compressed air pump is an air outlet control switch of the compressed air pump. The intelligent control unit is simple in operation procedure, higher in automation degree and safer in use.

Description

The CAFS intelligent control unit
Technical field
The utility model relates to a kind of auxiliary equipment of fire truck, specifically is meant a kind of control module that is used for vehicle-mounted or fixed CAFS.
Background technology
In petroleum industry, chemical industry even war industry, air-foam system has obtained application more and more widely.But air-foam system commonly used at present still exists some problems: the one, and the safety guarantee coefficient is not high, most air-foam systems only have the protection foam pump or prevent simple function such as pipeline shake, and it can't be integrated in the same system, thereby cause the defencive function of system device incomplete, if any device fault is arranged, then cause total system can't use or non-normal working; The 2nd,, when the oily temperature of compressed air pump reaches warning value,, very likely do not damage air pump if do not stop the work of compressed air pump to the defencive function of compressed air pump; Three are to use dumbly, and for different fire, the requirement of our foam humidity is also different, and the foam humidity of air-foam system generally all pre-sets, and it can't regulate the foam humidity according to the fire concrete condition; And part producer does not directly preset the input value of foam humidity in order to address this problem, so that the fire fighter regulates the humidity of foam at different fire, but like this if be common fire, then can waste the attack time of fire fighter's preciousness.
The utility model content
Technical problem to be solved in the utility model provides a kind of CAFS intelligent control unit, has taked some more easy running programs, makes automaticity higher, uses safer.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the CAFS intelligent control unit, mainly by water pump, and the pipeline that is communicated with water pump is formed, this control module also includes the foams mix proportional controller, foam tank, foam pump, foam humidity controller, compressed air pump, the compressed air pump air outlet valve, described foams mix proportional controller respectively with pipeline, foam humidity controller, foam pump links to each other, described foam humidity controller also links to each other with compressed air pump and compressed air pump air outlet valve respectively, described foam pump is obtained foam solution and is inputed in the pipeline from foam tank, and the air cock that goes out that described compressed air pump air outlet valve is a compressed air pump.
In order to control the ratio of foams mix more accurately, water ga(u)ge also is installed, and described water ga(u)ge links to each other with the foams mix proportional controller in pipeline.
In order to prevent the idle running of foam pump under the aneroid situation, described foam tank is provided with the low liquid level inductive switch of foam solution, and the low liquid level inductive switch of described foam solution links to each other with the foams mix proportional controller.
Further, this control module also includes the foam solution flowmeter, and described foam solution flowmeter is installed in the connection line of foam pump and pipeline or on the foam pump, and described foam solution flowmeter also links to each other with described foams mix proportional controller.
In order to control the output state of compressed-air foam, on described pipeline, also be provided with the foam humidity and regulate electrical ball valve, described foam humidity is regulated between the tie point that electrical ball valve is installed on the tie point of foam pump and pipeline and compressed air pump air outlet valve and pipeline, and described foam humidity adjusting electrical ball valve also links to each other with described foam humidity controller.
In order to prevent when the oily temperature of compressed air pump reaches warning value, to damage air pump, also be provided with warm inductor of compressed air pump oil and the compressed air pump pressure inductor of giving vent to anger on described compressed air pump, described compressed air pump warm inductor of oil and the compressed air pump pressure inductor of giving vent to anger links to each other with foam humidity controller respectively.
To sum up, the beneficial effects of the utility model are:
(1) cost of manufacture is low, the cost performance height.
(2) when control CAFS operate as normal, four big security functions are arranged: when CAFS does not have current, do not allow foam pump work, to avoid the loss of foam solution; When foam pump work is undesired, do not allow compressed air pump export pressurized air, directly mix the pipeline jitter phenomenon that brings to avoid water and pressurized air; When the foam solution in the foam tank runs low, stop foam pump work, to prevent the idle running of foam pump under the aneroid situation; When the oily temperature of compressed air pump reaches warning value, stop the work of compressed air pump, with the protection air pump.
(3) adopt program control system, both can control the humidity of foam output by preset value, also can be according to the fire concrete condition by the own regulating and controlling foam of fire fighter humidity.
(4) adopt panel operation, make simple to operate, easy to use.The user only needs required foams mix ratio, the foam humidity state of input on controller, can obtain required compressed-air foam.
Description of drawings
Fig. 1 is a syndeton synoptic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, a kind of intelligent control unit that comprises the CAFS of foams mix proportional controller, foam humidity controller, water ga(u)ge, foam solution flowmeter, the low liquid level inductive switch of foam solution provide induced signal to the foams mix proportional controller, the foams mix proportional controller is according to input instruction and the signal controlling foam pump work that obtains, and make foam pump according to the different foam solution of streamflow regime output, realize that foam accurately mixes.Foams mix proportional controller, the compressed air pump warm inductor of pressure inductor, compressed air pump oil of giving vent to anger provides induced signal to foam humidity controller, foam humidity controller is regulated electrical ball valve, the work of compressed air pump air outlet valve according to input instruction and the signal controlling foam humidity that obtains, make pressurized air can be injected in water/foam mixing liquid, and, realize the different output states of compressed-air foam by regulating the aperture of foam humidity adjusting electrical ball valve.
In actual mechanical process, whole control process is finished in two steps.The first step is mixing of control water and foam solution.According to the parameter of fireman to the input of foams mix proportional controller, by the signal of water ga(u)ge, foam solution flowmeter, the low liquid level inductive switch feedback of foam solution, the foams mix proportional controller is regulated foam pump output and is mixed required foam solution with water.Second step was that control water/foam mixing liquid mixes with compressed-air actuated.According to the parameter of fireman to the input of foam humidity controller, by the give vent to anger signal of pressure inductor and foams mix proportional controller feedback of the warm inductor of compressed air pump oil, compressed air pump, foam humidity controller is handled the foam humidity and is regulated electrical ball valve, the action of compressed air pump air outlet valve, blends required compressed-air foam humidity.
Foams mix proportional controller and foam humidity controller all are panel operation, and be user-friendly.By simple operations, just can control CAFS output pure water, wet foam, dry foam.
Wherein, the foams mix proportional controller is the control core that realizes that the foam ratio is mixed.Water ga(u)ge is to its feedback current real-time condition, and the low liquid level inductive switch of foam solution feeds back the residue situation of foam solution in foam tank to it.Foams mix ratio and current discharge according to operator's input, the foams mix proportional controller calculates required foam solution flow, and then send instruction to foam pump, the amount of infusion of control foam pump, the foam solution flowmeter can feed back to the foams mix proportional controller in real time with the foam solution flow, make controller can constantly revise the foam pump output quantity, reach the function of accurate control mixing ratio.When the foam solution storage reaches warning line in the foam tank; the low liquid level inductive switch of foam solution is reported to the police and is given the foams mix proportional controller with signal feedback; controller can stop foam pump work; the system that makes no longer annotates foam solution to pipeline, realizes the defencive function that foam pump must not aneroid idle running.When not having water to flow, water ga(u)ge can feed back to the foams mix proportional controller at once with signal, and controller will stop foam pump work then, and the system that makes no longer annotates foam solution to pipeline, realizes avoiding the defencive function of foam solution loss.
Foam humidity controller is the control core that realizes that water/foam mixing liquid mixes with pressurized air.The foams mix proportional controller is to its feedback foam pump signal of operate as normal whether, whether the compressed air pump pressure inductor of giving vent to anger goes out atmospheric pressure and reaches more than the ratings to its feedback pressurized air, and whether the oil temperature of the warm inductor of compressed air pump oil in its feedback compressed air pump superelevation.When the foam pump operate as normal, compressed air pump goes out atmospheric pressure and reaches more than the ratings, when the oil temperature in the compressed air pump is in normal value again, the operator is to foam humidity controller input regulating command, foam humidity controller just can be opened the compressed air pump air outlet valve, and the aperture of adjusting foam humidity adjusting electrical ball valve realizes required foam humidity.If foam pump flows or when foam solution is less than warning line and quits work because of anhydrous; the foams mix proportional controller can send signal to foam humidity controller simultaneously; foam humidity controller is closes compression pneumatic pump air outlet valve at once, the defencive function that the pipeline of realizing avoiding water and pressurized air directly to mix and bringing is shaken.When compressor oil temperature rise during to warning value, the warm inductor of compressed air pump oil can send signal to foam humidity controller, and foam humidity controller can allow compressed air pump quit work at once, realizes the high temperature protection function of pneumatic pump.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, to any simple modification, equivalent variations that above embodiment did, all fall within the protection domain of the present utility model on every foundation technical spirit of the present utility model.

Claims (6)

1. CAFS intelligent control unit, mainly by water pump, and the pipeline that is communicated with water pump is formed, it is characterized in that: also include the foams mix proportional controller, foam tank, foam pump, foam humidity controller, compressed air pump, the compressed air pump air outlet valve, described foams mix proportional controller respectively with pipeline, foam humidity controller, foam pump links to each other, described foam humidity controller also links to each other with compressed air pump and compressed air pump air outlet valve respectively, described foam pump is obtained foam solution and is inputed in the pipeline from foam tank, and the air cock that goes out that described compressed air pump air outlet valve is a compressed air pump.
2. CAFS intelligent control unit according to claim 1 is characterized in that: water ga(u)ge also is installed in pipeline, and described water ga(u)ge links to each other with the foams mix proportional controller.
3. CAFS intelligent control unit according to claim 1 and 2, it is characterized in that: described foam tank is provided with the low liquid level inductive switch of foam solution, and the low liquid level inductive switch of described foam solution links to each other with the foams mix proportional controller.
4. CAFS intelligent control unit according to claim 3, it is characterized in that: also include the foam solution flowmeter, described foam solution flowmeter is installed in the connection line of foam pump and pipeline or on the foam pump, and described foam solution flowmeter also links to each other with described foams mix proportional controller.
5. according to claim 1 or 4 described CAFS intelligent control units, it is characterized in that: on described pipeline, also be provided with the foam humidity and regulate electrical ball valve, described foam humidity is regulated between the tie point that electrical ball valve is installed on the tie point of foam pump and pipeline and compressed air pump air outlet valve and pipeline, and described foam humidity adjusting electrical ball valve also links to each other with described foam humidity controller.
6. CAFS intelligent control unit according to claim 5, it is characterized in that: also be provided with warm inductor of compressed air pump oil and the compressed air pump pressure inductor of giving vent to anger on described compressed air pump, described compressed air pump warm inductor of oil and the compressed air pump pressure inductor of giving vent to anger links to each other with foam humidity controller respectively.
CN2010201701928U 2010-04-23 2010-04-23 Intelligent control unit of compressed air foam system Expired - Fee Related CN201681319U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102526915A (en) * 2011-12-14 2012-07-04 陕西航天动力高科技股份有限公司 Low flow positive pressure automatic foam proportioner
CN107088281A (en) * 2017-06-12 2017-08-25 广东瑞霖特种设备制造有限公司 A kind of backpack is pre-mixed compressed air foam fire-extinguishing apparatus
CN107088278A (en) * 2017-06-12 2017-08-25 广东瑞霖特种设备制造有限公司 One kind premixing compressed air foam extinguishing device
CN107158610A (en) * 2017-04-21 2017-09-15 东华大学 Compressed-air foam ratio hybrid control system
CN108525164A (en) * 2017-03-01 2018-09-14 中国石油化工股份有限公司 A kind of foam-generating device using liquefied medium
CN113359416A (en) * 2021-06-11 2021-09-07 西安理工大学 Multi-input single-output compressed air foam system based on PLC and control method
CN115569325A (en) * 2022-11-01 2023-01-06 西安同步电气有限责任公司 Wide-adaptability container type compressed air foaming device and control method
US11980785B2 (en) 2017-03-01 2024-05-14 China Petroleum & Chemical Corporation Foam producing method, fire extinguishing method, and appliance for foam extinguishing

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102526915A (en) * 2011-12-14 2012-07-04 陕西航天动力高科技股份有限公司 Low flow positive pressure automatic foam proportioner
CN108525159A (en) * 2017-03-01 2018-09-14 中国石油化工股份有限公司 A kind of big flow foam-generating device and foam fire-fighting equipment
US11980785B2 (en) 2017-03-01 2024-05-14 China Petroleum & Chemical Corporation Foam producing method, fire extinguishing method, and appliance for foam extinguishing
CN108525160A (en) * 2017-03-01 2018-09-14 中国石油化工股份有限公司 Foam-generating device and foam fire-fighting equipment
CN108525164A (en) * 2017-03-01 2018-09-14 中国石油化工股份有限公司 A kind of foam-generating device using liquefied medium
CN108525163A (en) * 2017-03-01 2018-09-14 中国石油化工股份有限公司 Foam-generating device and fire extinguisher
CN108525161A (en) * 2017-03-01 2018-09-14 中国石油化工股份有限公司 Foam generation module and foam fire-fighting equipment
CN107158610A (en) * 2017-04-21 2017-09-15 东华大学 Compressed-air foam ratio hybrid control system
CN107088278A (en) * 2017-06-12 2017-08-25 广东瑞霖特种设备制造有限公司 One kind premixing compressed air foam extinguishing device
CN107088281A (en) * 2017-06-12 2017-08-25 广东瑞霖特种设备制造有限公司 A kind of backpack is pre-mixed compressed air foam fire-extinguishing apparatus
CN113359416A (en) * 2021-06-11 2021-09-07 西安理工大学 Multi-input single-output compressed air foam system based on PLC and control method
CN115569325A (en) * 2022-11-01 2023-01-06 西安同步电气有限责任公司 Wide-adaptability container type compressed air foaming device and control method
CN115569325B (en) * 2022-11-01 2024-01-12 西安同步电气有限责任公司 Wide-adaptability container type compressed air foam device and control method

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20101222

Termination date: 20160423