CN203154668U - Compressed gas foam proportioning device - Google Patents

Compressed gas foam proportioning device Download PDF

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Publication number
CN203154668U
CN203154668U CN 201320153425 CN201320153425U CN203154668U CN 203154668 U CN203154668 U CN 203154668U CN 201320153425 CN201320153425 CN 201320153425 CN 201320153425 U CN201320153425 U CN 201320153425U CN 203154668 U CN203154668 U CN 203154668U
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CN
China
Prior art keywords
foam
gas
water
pressure
liquid
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN 201320153425
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Chinese (zh)
Inventor
王靖
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Dongguan Sihuiwei Electronic Technology Co., Ltd.
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Xihua University
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Priority to CN 201320153425 priority Critical patent/CN203154668U/en
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Publication of CN203154668U publication Critical patent/CN203154668U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a compressed gas foam proportioning device, which comprises a gas pipeline, a foam liquid pipeline and a water pipeline; one circuit of gas conveyed by the gas pipeline is communicated with a proportional gas flow rate adjusting valve and mixed with a foam mixed liquid in a gas-liquid mixing cavity; the other circuit of the gas conveyed by the gas pipeline is communicated with a foam storage tank so as to supply the foam conveying power; the foam liquid pipeline comprises the foam storage tank, the proportional liquid flow rate adjusting valve and a foam mixing cavity, which are sequentially connected with one another, and the foam liquid is mixed with the water in the foam mixing cavity; and the water pipeline is used for supplying the water source for extinguishing the fire, and the water is sequentially mixed with the foam in the foam mixing cavity and with the gas in the gas-liquid mixing cavity to be conveyed to a spraying port. The water flow rate is monitored by utilizing a flow rate sensor, the water pressure is monitored by a pressure sensor, the openness of the two proportional flow rate adjusting valves is controlled through the flow rate signal and the water pressure signal, the controller automatically controls the mixing proportion of the extinguishing medium water, the foam liquid and the air, the jet pressure of the extinguishing medium after being mixed is not reduced, the proportioning adjustable range is large, the medium pressure is high, and the extinguishing efficiency is high.

Description

A kind of compressed air foam proportion mixer
Technical field
The utility model belongs to Machine Design and makes the field, especially belongs to fire-fighting equipment and manufactures and designs the field, particularly a kind of compressed air foam proportion mixer.
Background technology
Characteristics such as that froth fire extinguishing system has is safe and reliable, economical and practical, fire-fighting efficiency height especially have more outstanding superiority to the category-B fire of putting out a fire to save life and property, and are the basic modes of putting out a fire to save life and property of present home and abroad oil fire.Foam proportioner is froth fire extinguishing system " nerve center ", and the quality of its service behaviour is directly connected to the success or failure that froth fire extinguishing system fights a fire.Foam proportioner has types such as pressure type proportional mixer for air foam, circular pump type foam proportioner, in-line foam concentrate inducer
The pressure type foam proportioner
The pressure type foam proportioner is applied to be made up of water inlet pipe, drain pipe, mixing chamber, anemostat etc. in ZP32 foam/water spray automatic fire extinguishing system, low expansion foam fire extinguishing system, the AFFF sprinkling fire-distinguishing system.Be cast with arrow on the mixing chamber of proportioner, expression flows to.The arrow tail end should be connected with pumping line during installation, and the arrow end should be responsible for foam and connect, and water inlet pipe, drain pipe are connected with foam liquid tank respectively.
Operation principle: proportioner mainly utilizes venturi principle, during press water passing ratio blender, produce negative pressure differential between portion and the foam solution basin within it, make basin inner foam liquid enter proportioner by the foam solution pipe that is connected with proportioner, the orifice plate that control foam solution flow is arranged in tube connector just forms foam---the water mixed liquid of stablizing mixed proportion.
The negative line pressure foam proportioner
Negative line pressure formula foam proportioner is mainly used in the ratio of equipment such as foam fire hydrant box, mobile foam cart to be mixed.
Operation principle: after press water entered proportioner from import, most of water sprayed into anemostat at a high speed through nozzle, formed negative pressuren zone between nozzle and anemostat, and foam solution is inhaled into negative pressuren zone by liquid sucting port, entered anemostat simultaneously with press water, flowed out from outlet; Also have the blended liquid phase that the sub-fraction press water then flows out by control valve and anemostat to mix the back from the outlet outflow.The handle of turn control valve (blender side) is regulated the mixing ratio of mixed liquor.
Design feature: blender is vacuum lines formula blender, and when pressure of supply water reached force value, blender sucked foam solution in the water supply line; The blender import is connected with water supply line by KY65 type tube tooth interface, and outlet is connected with the mixed liquor export pipeline by KY65 type pipe tooth; Control is housed on the blender sucks the foam solution adjustable valve, the direction board on the control valve indicates inhales the foam solution proportional numerical value.
The circular pump type foam proportioner
The negative pressure pump proportioner is applied in the suction type froth fire extinguishing system.Pump proportioner is made up of regulating handle, direction board, control valve, mixing chamber, anemostat etc.Be cast with arrow on the mixing chamber of pump proportioner, expression flows to.Sign different blended interflow amount is respectively 16L/s, 24L/s, 32L/s, 48L/s, 64L/s on the direction board.Regulating handle is according to the corresponding adjusting foams mix of direction board flow quantity.The arrow tail end should be connected with pumping line during installation, and the arrow end should be connected with pump water inlet, and liquid sucting port and foam liquid tank are connected.
Design feature: blender is the circular pump type blender that is made of regulating handle, direction board, control valve, mixing chamber, anemostat etc.; The blender direction board is marked with different numerical value, and its numerical value is corresponding with the mixed liquor value of generation and spray foam equipment; Blender is fit to the foam solution of adapted 6%; Blender should be installed near the water pump, is connected with water inlet pipe with the outlet pipe of water pump, and blender requires pump inlet pressure to be less than 0.03MPa, otherwise will influence the absorption foam solution performance of blender; Blender is in 0.6~1.4MPa inlet pressure ranges, and it draws foam liquid measure is constant substantially at a certain shelves, and produces and spray foam equipment when its mixing liquid measure changes under different pressures, and its mixing ratio will change.Therefore to suitably adjust and control and produce and the pressure of spray foam equipment, make its pressure can not be too low or too high, so that guarantee that foam liquid measure shared ratio in the mixing liquid measure is 6~7%.
Traditional foam ratio gaseous mixture device as adopting venturi principle, can make the pressure loss of main flow medium (water) reach 35%, at the bottom of the efficient.Adopt negative line pressure or negative pressure circular pump type, complex structure, cost height.
Summary of the invention
The utility model discloses a kind of compressed air foam proportion mixer according to the deficiencies in the prior art.Problem to be solved in the utility model provide that a kind of simple in structure, pressure medium is big, fire-fighting efficiency is higher by gas as the powered foam solution, and by Flux Valve Control foam solution and gas flow positive-pressure type gas, foam and water three medium proportion mixers.
The utility model is achieved through the following technical solutions:
The compressed air foam proportion mixer comprises gas piping, foam solution pipeline and water lines, it is characterized in that:
Described gas piping provides gas, and gas piping carries gas one tunnel to be communicated with the proportion expression gas flow regulating valve, to mix with foam mixing liquid in the gas-liquid mixed chamber; Another road is communicated with the foam holding vessel provides foam delivery power;
Described foam solution pipeline comprises the foam holding vessel, the proportion expression fluid flow control valve that are linked in sequence, mixes with water in the foams mix chamber;
Described water lines provides the fire extinguishing water source, and the foams mix chamber is set is delivered to spout with foams mix, gas-liquid mixed chamber and after gas mixes in proper order;
Described water lines foams mix chamber leading portion is provided with pressure sensor and flow sensor, pressure sensor and flow sensor are gathered pressure and flow signal offers controller, controller respectively with regulate proportion expression gas flow regulating valve and proportion expression fluid flow control valve control connection.
Described gas piping provides gas by gas cylinder Compressed Gas or high-pressure pump.
Described water lines provides the fire extinguishing water source by high-pressure hydraulic pump or municipal fire_fighting pipe network.
The utility model utilizes flow sensor monitoring discharge, and the aperture of two proportion expression flow control valves of water changes in flow rate signal controlling, one of them proportion expression Flux Valve Control foam dope flow, the flow of another proportion expression Flux Valve Control gas.The flow of foam dope and gas is worth variation in proportion with the aperture of proportion expression flow control valve.The utility model is adopts pressure sensor monitoring water pressure also, because the initial value of hydraulic pressure can not determine, and often changes, with pressure sensor perception water pressure, with the initial opening of two proportion expression flow control valves of Signal Regulation of water pressure.Thereby the aperture that reaches two proportion expression flow control valves changes with pressure and flow proportional, realizes that foam dope and gas mix with water by a certain percentage, realize Based Intelligent Control.
The transmitting power of foam dope is constant gas pressure, and pressure can be set in 0.1~0.8MPa scope, and the flow of foam dope is followed the aperture of proportion expression flow control valve and ratio changes.Water with after foam dope mixes, is just obtained the foam mixing liquid of a certain ratio.
If select different proportion expression flow control valves, just can obtain the mix-froth liquid of different blended composition and division in a proportion, its mixing ratio can change because of varying in size of proportion expression flow control valve, and the flow of foam dope is 0.5%~6% of total flow, and the flow of gas is 700%~1600% of total flow.
The utility model helpfulness, the utility model utilizes flow sensor monitoring discharge, and the aperture of two proportion expression flow control valves of water changes in flow rate signal controlling, adopts pressure sensor monitoring water pressure, with pressure sensor perception water pressure, initial opening with two proportion expression flow control valves of Signal Regulation of water pressure, controller is the main firing-fighting medium water of control and foam dope and Air mixing ratio automatically, do not reduce the expulsion pressure that mixes the back firing-fighting medium, the mixed proportion adjustable extent is big, and pressure medium is big, fire-fighting efficiency is high.
Description of drawings
Fig. 1 is the utility model mixing arrangement schematic diagram.
Among the figure, the 1st, gas cylinder Compressed Gas or high-pressure pump source of the gas, the 2nd, pressure regulator valve, the 3rd, the foam holding vessel, the 4th, proportion expression fluid flow control valve, the 5th, control circuit, the 6th, flow sensor, the 7th, pressure sensor, the 8th, high-pressure hydraulic pump, the 9th, foams mix chamber, the 10th, gas-liquid mixed chamber, the 11st, proportion expression gas flow regulating valve, the 12nd, controller.
The specific embodiment
Further describe below by the utility model of embodiment; present embodiment only is used for the utility model is further detailed; but can not be interpreted as the restriction to the utility model protection domain, those skilled in the art can make the scope that some nonessential improvement and adjustment belong to the utility model protection according to above-mentioned content of the present utility model.
In conjunction with Fig. 1.
The compressed air foam proportion mixer comprises gas piping, foam solution pipeline and water lines, and gas piping provides gas, and gas piping carries gas one tunnel to be communicated with proportion expression gas flow regulating valve 11, to mix with foam mixing liquid in gas-liquid mixed chamber 10; Another road is communicated with foam holding vessel 3 provides foam delivery power; The foam solution pipeline comprises the foam holding vessel 3, the proportion expression fluid flow control valve 4 that are linked in sequence, mixes with water in foams mix chamber 9; Water lines provides the fire extinguishing water source, and foams mix chamber 9 is set is delivered to spout with foams mix, gas-liquid mixed chamber 10 and after gas mixes in proper order; Water lines foams mix chamber leading portion is provided with pressure sensor 7 and flow sensor 6, pressure gathered by pressure sensor 7 and flow sensor 6 and flow signal offers controller 12, controller 12 respectively with regulate proportion expression gas flow regulating valve 11 and proportion expression fluid flow control valve 4 control connections.
Gas piping provides gas by gas cylinder Compressed Gas or high-pressure pump.
This routine water lines provides the fire extinguishing water source by high-pressure hydraulic pump 8.
Fig. 1 has represented the syndeton of the utility model mixing arrangement, and each equipment part that the utility model is selected for use all has commercially available.
Discharge and water pressure that the utility model utilizes flow sensor 6 and pressure sensor 7 perception high-pressure hydraulic pumps 8 to provide, and with discharge, (0~5V or 4~12mA) imports in the controller 12 and handles pressure sensor signal, aperture by control circuit 5 control ratio formula gas flow regulating valves 11 and proportion expression fluid flow control valve 4, with the foam dope flow that flows in the proportion expression fluid flow control valve 4 control foam solution pipelines, with gas flow in the proportion expression gas flow regulating valve 11 control piper gas pipings, the flow of foam dope is worth variation in proportion with the aperture of proportion expression fluid flow control valve 4, and gas flow is worth variation in proportion with the aperture of proportion expression gas flow regulating valve 11.The transmitting power of foam dope is constant gas pressure, and pressure can be set in 0.1~0.8MPa scope.The force value of keep setting in the device busy process is constant, and the flow of foam dope is with regard to the aperture of following proportion expression fluid flow control valve 4 and ratio changes, and when supply gas pressure was constant, the mixed proportion of foam mixing liquid and gas just can remain unchanged.Water is mixed in foams mix chamber 9 with foam dope, with after gas mixes in gas-liquid mixed chamber 10, export from the air spout again.When bleed pressure was constant, the mixed proportion of water and foam dope just can remain unchanged.
Controller 12 is accepted the signal (4~20mA or 0~5V) of sensor stream quantity sensor 11 and pressure sensor 7, the input data are carried out operational analysis, by the program that sets in advance, output control signal (4~20mA or 0~5V), flow control valve is controlled, and (open in proportion by 4~20mA or 0~5V) size according to the output control signal of controller for the aperture of flow control valve.

Claims (3)

1. a compressed air foam proportion mixer comprises gas piping, foam solution pipeline and water lines, it is characterized in that:
Described gas piping provides gas, and gas piping carries gas one tunnel to be communicated with the proportion expression gas flow regulating valve, to mix with foam mixing liquid in the gas-liquid mixed chamber; Another road is communicated with the foam holding vessel provides foam delivery power;
Described foam solution pipeline comprises the foam holding vessel, the proportion expression fluid flow control valve that are linked in sequence, mixes with water in the foams mix chamber;
Described water lines provides the fire extinguishing water source, and the foams mix chamber is set is delivered to spout with foams mix, gas-liquid mixed chamber and after gas mixes in proper order;
Described water lines foams mix chamber leading portion is provided with pressure sensor and flow sensor, pressure sensor and flow sensor are gathered pressure and flow signal offers controller, controller respectively with regulate proportion expression gas flow regulating valve and proportion expression fluid flow control valve control connection.
2. compressed air foam proportion mixer according to claim 1, it is characterized in that: described gas piping provides gas by gas cylinder Compressed Gas or high-pressure pump.
3. compressed air foam proportion mixer according to claim 1, it is characterized in that: described water lines provides the fire extinguishing water source by high-pressure hydraulic pump.
CN 201320153425 2013-03-29 2013-03-29 Compressed gas foam proportioning device Expired - Fee Related CN203154668U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320153425 CN203154668U (en) 2013-03-29 2013-03-29 Compressed gas foam proportioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320153425 CN203154668U (en) 2013-03-29 2013-03-29 Compressed gas foam proportioning device

Publications (1)

Publication Number Publication Date
CN203154668U true CN203154668U (en) 2013-08-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104958847A (en) * 2015-06-09 2015-10-07 公安部天津消防研究所 Compressed air foam fire extinguishing device for large floating roof storage tank
CN107158610A (en) * 2017-04-21 2017-09-15 东华大学 Compressed-air foam ratio hybrid control system
CN112915431A (en) * 2021-04-12 2021-06-08 天津理工大学 Water-based foam preparation device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104958847A (en) * 2015-06-09 2015-10-07 公安部天津消防研究所 Compressed air foam fire extinguishing device for large floating roof storage tank
CN104958847B (en) * 2015-06-09 2018-05-15 公安部天津消防研究所 Compressed air foam fire-extinguishing apparatus for large-scale floating roof tank
CN107158610A (en) * 2017-04-21 2017-09-15 东华大学 Compressed-air foam ratio hybrid control system
CN112915431A (en) * 2021-04-12 2021-06-08 天津理工大学 Water-based foam preparation device

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20180507

Address after: 523000 No. 61 Nanling Road, Nankang village, Fenggang Town, Dongguan, Guangdong

Patentee after: Dongguan Sihuiwei Electronic Technology Co., Ltd.

Address before: 610039 Jinzhou Road, Jinniu District, Chengdu, Sichuan Province, No. 999

Patentee before: Xihua University

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130828

Termination date: 20190329