CN102101023A - Measuring injection type foam proportion mixer - Google Patents
Measuring injection type foam proportion mixer Download PDFInfo
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- CN102101023A CN102101023A CN2009102594408A CN200910259440A CN102101023A CN 102101023 A CN102101023 A CN 102101023A CN 2009102594408 A CN2009102594408 A CN 2009102594408A CN 200910259440 A CN200910259440 A CN 200910259440A CN 102101023 A CN102101023 A CN 102101023A
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- foam
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- proportioning unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention provides a measuring injection type foam proportion mixer which comprises a flow meter, a foam proportion controller, a frequency converter, a variable frequency motor, a plunger pump and the like. The flow meter is used for metering the water flow in a pipeline, and the controller is used for reading the water flow and injecting the required foam into a water flow pipeline by a mixture ratio-setting metering-controlling transporter, so that a measuring injection type foam proportion mixing function is achieved. The measuring injection type foam proportion mixer is applicable to a type A foam fire-fighting system and a type B foam fire-fighting system, wide in allowed flow range, free to set the foam mixing ratio, applicable to various foams, and convenient for the practical operation in a fire-fighting site; and the measuring injection type foam proportion mixer is very high in precision since the mixture ratio is constant regardless of the change of the usage amount of the foam once the mixing ratio is set.
Description
Technical field
The present invention relates to a kind of measurement injecting type foam proportioning unit, particularly a kind of can control in real time and can be constant foams mix than and be applicable to the measurement injecting type foam proportioning unit of all kinds of froth fire extinguishing systems.
Background technology
The fixed foam fire extinguishing system of present stage mainly adopts pressure type foam proportioning unit and balanced type foam proportioning unit, and the core component of mix-froth is Venturi tube on two kinds of foam proportioning units.When solvent (water) flow through from Venturi tube, the reducing of the local caliber of Venturi tube can make solvent flow rate increase.From Bernoulli equation as can be known, the accelerating sections insides of pipes will produce negative pressure, and this negative pressure sucks solute (foam solution), with solvent, form mixed liquor.There is following defective in this foam ratio hybrid mode:
1, the foam ratio can't accurately obtain, and only is applicable to that mixing ratio is 3% or 6% category-B foaming system, is 0.3%～1% class A foam fire extinguishing system and be not suitable for mixing ratio.
2, the contraction section in the Venturi tube can cause the pressure loss in the solvent delivery process, and required negative pressure is big more, and the solvent pressure loss just must be big more.
3, proportion mixer allows range of flow less, and when solvent flux hour, negative pressure reduces, and causes solute (foam solution) possibly can't enter solvent, accurate foams mix ratio in the time of can't guaranteeing low discharge.
4, the setting of foams mix ratio realizes by the pressure reducing orifice of solute (foam solution) inlet, in case the equipment installation, the real-time adjustment of mixing ratio is difficult to realize that the foam-type that causes foam proportioning unit to be suitable for is difficult to change.
Summary of the invention
The purpose of this invention is to provide a kind of measurement injecting type foam proportioning unit, it can realize the convenience of foams mix ratio, the instant change, so that fire-extinguishing location is provided with best foams mix ratio according to foam-type and foam volume; Make the final foam solution of exporting of foam proportioning unit remain the mixing ratio of degree of precision simultaneously, how the total amount of no matter exporting foam solution changes; When stating function in realization, also must make foam ratio mixed process not have the pressure loss substantially.
For solving the problems of the technologies described above, measurement injecting type foam proportioning unit of the present invention includes the solvent delivery pipeline, and its colvent inlet place that includes solvent conduit and be installed in described solvent conduit can control the butterfly valve of solvent start and stop; The foam solution transfer pipeline, the ball valve that it comprises the foam solution pipeline and is installed in the foam solution porch of described foam solution pipeline; And the foam proportioner that connects described solvent delivery pipeline and foam solution transfer pipeline; Between described solvent delivery pipeline and foam solution transfer pipeline, also be connected with foam proportional controller and the metering and conveying device that can quantitatively control foam in turn.
As a preferred embodiment of the present invention, be equiped with the flowmeter of exportable solvent flux information in the described solvent delivery pipeline, it links to each other with described foam proportioner.
As a preferred embodiment of the present invention, described flow is counted electromagnetic flowmeter, and its inside is for direct piping and be equiped with automatic range switching chip.
As a preferred embodiment of the present invention, described metering and conveying device include successively link to each other in order to the displacement pump of carrying foam solution, in order to the variable-frequency motor that drives described displacement pump with in order to control the frequency converter that described variable-frequency motor rotates, wherein, described displacement pump is installed in the described foam solution transfer pipeline and with described ball valve and links to each other, and described frequency converter is electrically connected with described flowmeter and foam proportional controller simultaneously.
As a preferred embodiment of the present invention, described displacement pump is gear pump or plunger displacement pump.
As a preferred embodiment of the present invention, described foam proportional controller is computer, single-chip microcomputer or industrial computer, and it is electrically connected with described flowmeter and frequency converter simultaneously.
As a preferred embodiment of the present invention, described foam proportional controller is equiped with the foam ratio that can receive artificial setting foam ratio the interface is set.
As a preferred embodiment of the present invention, described foam solution transfer pipeline also is equiped with the pressure regulation relief valve that links to each other with the displacement pump of described metering and conveying device.
As a preferred embodiment of the present invention, described foam solution transfer pipeline also is equiped with the check-valves that links to each other with foam proportioner with described pressure regulation relief valve.
As a preferred embodiment of the present invention, described foam proportioner is three-way pipe or Venturi tube.
Wherein, described solvent conduit can be used one or more, and at least one solvent conduit connected described flowmeter and foam proportioner.
Solvent flows through from described solvent conduit, and the described flowmeter of flowing through, and makes this flowmeter produce signal and output solvent flow information, and described foam proportional controller receives the solvent flux information of this flowmeter and calculates solvent flux; Described foam proportional controller calculates the required amount of foam solution according to artificial mixing ratio and the solvent flux of setting.
Described foam proportional controller is controlled described metering and conveying device according to the foam solution demand, by changing its running speed, metering and conveying device is extracted out required foam solution from the foam solution conveyance conduit, be injected into foam proportioner and solvent by the foam solution pipeline, form foam mixing liquid.
The inlet of described metering and conveying device is connected with described foam solution pipeline, also can be connected with the foam solution pipeline simultaneously, same time inner foam liquid and solvent have only one of them can be connected to the inlet of this metering and conveying device, open promptly that foam solution is supplied with and cut off solvent and supply with and to realize that solvent mixes with the setting mixing ratio of foam solution, and open that solvent is supplied with and can realize the flushing of solute conveyance conduit and metering and conveying device during the supply of cut-out foam solution.
Operation principle of the present invention is to utilize the flowmeter that has signal of telecommunication output accurately to measure the flow of solvent, the foam proportional controller reads the flowmeter output signal, calculate the foam solution aequum according to setting the foam solution mixing ratio, foam proportional controller control metering and conveying device, metering and conveying device accurately is injected into required foam solution in the solvent, forms the solution of default mixing ratio.
Effect of the present invention is accurately to have controlled the foams mix ratio, makes the setting of mixing ratio and change become simple.Because mixing ratio is accurately controlled, the measurement injecting type foam proportioning unit can be used for the mixing of class A foam, and no matter how the solution output flow changes, and mixing ratio is constant all the time.The setting of mixing ratio and change are simple, make the measurement injecting type foam proportioning unit can arbitrarily change foam-type, and fire-extinguishing location can be adjusted mixing ratio at any time according to the foam surplus, the control foam jet time.
Description of drawings
Further specify the present invention below in conjunction with accompanying drawing and better embodiment.
Fig. 1 a is the structural representation of measurement injecting type foam proportioning unit of the present invention;
Fig. 1 b is the vertical view of Fig. 1 a;
Fig. 1 c is the side view of Fig. 1 a;
Fig. 2 is the fundamental diagram of measurement injecting type foam proportioning unit of the present invention; And
Fig. 3 is the electrical schematic diagram of measurement injecting type foam proportioning unit of the present invention.
Among the figure: 1, plunger displacement pump; 2, variable-frequency motor; 3, VFC cabinet; 4, pressure regulation relief valve; 5, foam proportioner; 6, check-valves; 7, ball valve; 8, flowmeter; 9, butterfly valve; 10, solvent conduit.
The specific embodiment
For technological means, character of innovation that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Shown in Fig. 1 a, Fig. 1 b and Fig. 1 c, measurement injecting type foam proportioning unit of the present invention includes the solvent delivery pipeline, it includes the solvent conduit 10 of one or more delivery solvent (being generally water), is in series with butterfly valve 9, flowmeter 8 and foam proportioner 5 in this solvent conduit 10; Wherein, described foam proportioner 5 is three-way pipe or Venturi tube, and it can be arranged on before the flowmeter 8 or behind the flowmeter 8; Described butterfly valve 9 is used for controlling the current start and stop; Described flowmeter 8 is an electromagnetic flowmeter, its inside is direct piping, pressure influence to current can be ignored, its inside also is equiped with automatic range and switches chip, make this electromagnetic flowmeter 8 can realize the very flow measurement of wide range scope interior (greatest measurement can reach 50: 1 with the ratio of minimum measured value), according to the certainty of measurement needs, flowmeter 8 inlet preceding pipeline length are not less than 10D (D is the flowmeter latus rectum), and outlet back duct length is not less than 5D.When the required maximum foam flow of foam proportioning unit is big, for saving cost, can use the solvent conduit 10 of many identical calibers, flowmeter 8 and foam proportioner 5 are set only for one of them pipeline.
Measurement injecting type foam proportioning unit of the present invention also includes the foam solution transfer pipeline, also is connected with foam proportional controller and the metering and conveying device that can quantitatively control foam between described solvent delivery pipeline 10 and foam solution transfer pipeline in turn.
Described foam solution transfer pipeline comprises ball valve 7 and the pressure regulation relief valve 4 that links to each other successively and the check-valves 6 of foam solution pipeline and the foam solution porch that is installed in described foam solution pipeline.
Described metering and conveying device include successively link to each other in order to the displacement pump of carrying foam solution, in order to the variable-frequency motor 2 that drives described displacement pump with in order to control the frequency converter that described variable-frequency motor rotates; Wherein, described displacement pump is plunger displacement pump 1 or gear pump, and it is installed in the described foam solution transfer pipeline and with described ball valve 7 and links to each other with pressure regulation relief valve 4; It is the frequency converter of RB3000-5R5-GB-3 that described frequency converter is selected model for use, and it is electrically connected with described flowmeter 8 and foam proportional controller simultaneously.Described frequency converter and foam proportional controller are installed among the VFC cabinet 3.
Described foam proportional controller is computer, single-chip microcomputer or industrial computer, and it is electrically connected with described flowmeter 8 and frequency converter simultaneously, and it is equiped with the foam ratio that can receive artificial setting foam ratio the interface is set.
Please be simultaneously in conjunction with Fig. 2 and Fig. 3, foam stream outputs to pressure regulation relief valve 4 by plunger displacement pump 1 supercharging behind foam inlet ball valve 7, flow through check-valves 6 again and inject foam proportioner 5.Foam inlet ball valve 7 is often opened, and can close when maintenance plunger displacement pump 1 to prevent that foam solution from leaking.Set the foam maximums by pressure regulation relief valve 4 and go out hydraulic coupling, when the foam drain pipe stops up when causing the pipeline superpressure, the 4 automatic step-downs of pressure regulation relief valve, and the foam solution pressure release of superpressure shunted.Check-valves 6 can prevent the refluence of water in the water pipe.
Frequency converter and foam proportional controller are installed in the VFC cabinet 3.Electromagnetic flowmeter output flow information is connected to the foam proportional controller by the RS-485 bus, and the foam proportional controller reads flow.The foam proportional controller can be made of hardware devices such as integral type panel computer, desktop computer, notebook computer, industrial computers, works out specific control program on this basis, makes control program run on the operating system that hardware device is supported.The foam proportional controller is provided with the foam ratio interface is set, and can receive artificial foam ratio and set.After detecting flow meter signal output, the foam proportional controller calculates required foam according to setting mixing ratio and flow value automatically, be converted into the control information of frequency converter then according to the characterisitic parameter of plunger displacement pump 1, variable-frequency motor 2 and frequency converter, instruction is sent to frequency converter, rotation by Frequency Converter Control variable-frequency motor 2, variable-frequency motor 2 actuation plunger pumps 1 are injected into required foam in the water pipe and mix with water, thereby produce the foam solution of specifying mixing ratio.
Carry out because flow measurement, controller calculating and foam pump control are in real time, thereby guaranteed the constant all the time of foams mix ratio.When the required foam volume of system can't be realized with a plunger displacement pump, can use single inverter to control a plurality of variable-frequency motors simultaneously, also can allow controller control a plurality of frequency converters simultaneously, motor of each Frequency Converter Control realizes that the metering of foam is injected.The scene of fire also can be provided with the foams mix ratio flexibly according to the water yield and foam volume, guarantees the fire extinguishing effect or the longest attack time that reach best.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. the measurement injecting type foam proportioning unit includes
The solvent delivery pipeline, its colvent inlet place that includes solvent conduit and be installed in described solvent conduit can control the butterfly valve of solvent start and stop;
The foam solution transfer pipeline, the ball valve that it comprises the foam solution pipeline and is installed in the foam solution porch of described foam solution pipeline; And
Foam proportioner, it connects described solvent delivery pipeline and foam solution transfer pipeline;
It is characterized in that: between described solvent delivery pipeline and foam solution transfer pipeline, also be connected with foam proportional controller and the metering and conveying device that can quantitatively control foam in turn.
2. measurement injecting type foam proportioning unit according to claim 1 is characterized in that: be equiped with the flowmeter of exportable solvent flux information in the described solvent delivery pipeline, it links to each other with described foam proportioner.
3. measurement injecting type foam proportioning unit according to claim 2 is characterized in that: described flow is counted electromagnetic flowmeter, and its inside is for direct piping and be equiped with automatic range switching chip.
4. according to claim 2 or 3 described measurement injecting type foam proportioning units, it is characterized in that: described metering and conveying device include successively link to each other in order to the displacement pump of carrying foam solution, in order to the variable-frequency motor that drives described displacement pump with in order to control the frequency converter that described variable-frequency motor rotates, wherein, described displacement pump is installed in the described foam solution transfer pipeline and with described ball valve and links to each other, and described frequency converter is electrically connected with described flowmeter and foam proportional controller simultaneously.
5. measurement injecting type foam proportioning unit according to claim 4 is characterized in that: described displacement pump is gear pump or plunger displacement pump.
6. measurement injecting type foam proportioning unit according to claim 5 is characterized in that: described foam proportional controller is computer, single-chip microcomputer or industrial computer, and it is electrically connected with described flowmeter and frequency converter simultaneously.
7. measurement injecting type foam proportioning unit according to claim 6 is characterized in that: described foam proportional controller is equiped with the foam ratio that can receive artificial setting foam ratio the interface is set.
8. measurement injecting type foam proportioning unit according to claim 7 is characterized in that: described foam solution transfer pipeline also is equiped with the pressure regulation relief valve that links to each other with the displacement pump of described metering and conveying device.
9. measurement injecting type foam proportioning unit according to claim 8 is characterized in that: described foam solution transfer pipeline also is equiped with the check-valves that links to each other with foam proportioner with described pressure regulation relief valve.
10. measurement injecting type foam proportioning unit according to claim 9 is characterized in that: described foam proportioner is three-way pipe or Venturi tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102594408A CN102101023A (en) | 2009-12-22 | 2009-12-22 | Measuring injection type foam proportion mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102594408A CN102101023A (en) | 2009-12-22 | 2009-12-22 | Measuring injection type foam proportion mixer |
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| Publication Number | Publication Date |
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| CN102101023A true CN102101023A (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102594408A Pending CN102101023A (en) | 2009-12-22 | 2009-12-22 | Measuring injection type foam proportion mixer |
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Cited By (6)
| 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 |
| CN103977740A (en) * | 2014-05-30 | 2014-08-13 | 佛山市海天(高明)调味食品有限公司 | Material mixing system |
| CN108211969A (en) * | 2018-03-07 | 2018-06-29 | 深圳市海威达科技有限公司 | Foam is automatically mixed than device and car washer |
| CN111359463A (en) * | 2020-05-06 | 2020-07-03 | 武警 | Liquid middle injector for AB mixed liquid |
| CN112295142A (en) * | 2020-10-22 | 2021-02-02 | 南京德沃克自动化有限公司 | Foam liquid mixing method and foam mixing device |
| CN115920292A (en) * | 2022-12-05 | 2023-04-07 | 徐工消防安全装备有限公司 | Foam proportion calibration test system |
-
2009
- 2009-12-22 CN CN2009102594408A patent/CN102101023A/en active Pending
Cited By (7)
| 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 |
| CN103977740A (en) * | 2014-05-30 | 2014-08-13 | 佛山市海天(高明)调味食品有限公司 | Material mixing system |
| CN108211969A (en) * | 2018-03-07 | 2018-06-29 | 深圳市海威达科技有限公司 | Foam is automatically mixed than device and car washer |
| CN111359463A (en) * | 2020-05-06 | 2020-07-03 | 武警 | Liquid middle injector for AB mixed liquid |
| CN112295142A (en) * | 2020-10-22 | 2021-02-02 | 南京德沃克自动化有限公司 | Foam liquid mixing method and foam mixing device |
| CN115920292A (en) * | 2022-12-05 | 2023-04-07 | 徐工消防安全装备有限公司 | Foam proportion calibration test system |
| CN115920292B (en) * | 2022-12-05 | 2024-02-06 | 徐工消防安全装备有限公司 | Foam proportion calibration test system |
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Application publication date: 20110622 |