CN201596274U - Metering injection type foam proportional mixing device - Google Patents
Metering injection type foam proportional mixing device Download PDFInfo
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- CN201596274U CN201596274U CN2009202759317U CN200920275931U CN201596274U CN 201596274 U CN201596274 U CN 201596274U CN 2009202759317 U CN2009202759317 U CN 2009202759317U CN 200920275931 U CN200920275931 U CN 200920275931U CN 201596274 U CN201596274 U CN 201596274U
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- solvent
- proportioning unit
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Abstract
The utility model provides a metering injection type foam proportional mixing device, which comprises a flowmeter, a foam proportional controller, a frequency converter, a variable frequency motor, a plunger pump, etc. The controller reads flow through the water flow in a measuring pipeline and controls a metering delivery device to inject the required foam into a water pipeline according to a set mixing proportion, so as to realize metering injection type foam proportional mixing function. The metering injection type foam proportional mixing device disclosed by the utility model can be used for A-class and B-class foam extinguishing systems, has wide allowable flow range and freely set foam mixing proportion, is suitable for various foams, and is convenient for practical operation at an extinguishing site. In addition, once the mixing proportion is set, no matter how the foam consumption is changed, the mixing proportion remains the same all the time, thereby resulting in high precision.
Description
Technical field
The utility model 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.
The utility model content
The purpose of this utility model provides a kind of measurement injecting type foam proportioning unit, and 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 utility model 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 kind of preferred version of the present utility model, 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 kind of preferred version of the present utility model, described flow is counted electromagnetic flowmeter, and its inside is for direct piping and be equiped with automatic range switching chip.
As a kind of preferred version of the present utility model, 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 kind of preferred version of the present utility model, described displacement pump is gear pump or plunger displacement pump.
As a kind of preferred version of the present utility model, 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 kind of preferred version of the present utility model, described foam proportional controller is equiped with the foam ratio that can receive artificial setting foam ratio the interface is set.
As a kind of preferred version of the present utility model, 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 kind of preferred version of the present utility model, 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 kind of preferred version of the present utility model, 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 utility model 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 utility model 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 utility model below in conjunction with accompanying drawing and better embodiment.
Fig. 1 a is the structural representation of the utility model measurement injecting type foam proportioning unit;
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 the utility model measurement injecting type foam proportioning unit; And
Fig. 3 is the electrical schematic diagram of the utility model measurement injecting type foam proportioning unit.
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 utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Shown in Fig. 1 a, Fig. 1 b and Fig. 1 c, measurement injecting type foam proportioning unit of the present utility model 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 utility model 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 utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; without departing from the spirit and scope of the present invention; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model 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 |
|---|---|---|---|
| CN2009202759317U CN201596274U (en) | 2009-12-22 | 2009-12-22 | Metering injection type foam proportional mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202759317U CN201596274U (en) | 2009-12-22 | 2009-12-22 | Metering injection type foam proportional mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201596274U true CN201596274U (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202759317U Expired - Lifetime CN201596274U (en) | 2009-12-22 | 2009-12-22 | Metering injection type foam proportional mixing device |
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| CN (1) | CN201596274U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059062A (en) * | 2010-11-26 | 2011-05-18 | 上海金盾消防安全设备有限公司 | Fluid-driving multi-medium proportional mixing system |
| CN106745829A (en) * | 2017-03-28 | 2017-05-31 | 天津大学 | One kind aeration is intake into medicine integrated apparatus |
| CN106730545A (en) * | 2016-12-26 | 2017-05-31 | 威特龙消防安全集团股份公司 | Fine water mist fire-extinguishing system additive measures injected system |
| CN109016105A (en) * | 2017-06-09 | 2018-12-18 | 上海邦聚工程材料技术有限公司 | A kind of wear-resistant ceramic prefabricated component pouring device and casting process |
-
2009
- 2009-12-22 CN CN2009202759317U patent/CN201596274U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102059062A (en) * | 2010-11-26 | 2011-05-18 | 上海金盾消防安全设备有限公司 | Fluid-driving multi-medium proportional mixing system |
| CN106730545A (en) * | 2016-12-26 | 2017-05-31 | 威特龙消防安全集团股份公司 | Fine water mist fire-extinguishing system additive measures injected system |
| CN106730545B (en) * | 2016-12-26 | 2020-05-19 | 威特龙消防安全集团股份公司 | Additive metering injection system of water mist fire extinguishing system |
| CN106745829A (en) * | 2017-03-28 | 2017-05-31 | 天津大学 | One kind aeration is intake into medicine integrated apparatus |
| CN109016105A (en) * | 2017-06-09 | 2018-12-18 | 上海邦聚工程材料技术有限公司 | A kind of wear-resistant ceramic prefabricated component pouring device and casting process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SHANGHAI JINDUN INDUSTRIAL CO., LTD. Effective date: 20130618 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130618 Address after: 201318 prosperous industrial zone, Zhou Pu town, Shanghai, Pudong New Area Patentee after: Shanghai Jindun Special Vehicle Co., Ltd. Address before: 201318, No. 365 Cross Bridge Road, Zhou Pu town, Shanghai, Pudong New Area Patentee before: Shanghai Jindun Special Vehicle Co., Ltd. Patentee before: Shanghai Jindun Industrial Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI JINDUN FIRE-FIGHTING SECURITY EQUIPMENT C Free format text: FORMER OWNER: SHANGHAI JINDUN FIRE SAFETY EQUIPMENT CO.,LTD Effective date: 20141120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201318 PUDONG NEW AREA, SHANGHAI TO: 201304 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141120 Address after: 201304 Shanghai city Pudong New Area Wansong College Town Road No. 88 Patentee after: Shanghai Jindun Fire-fighting Security Technology Co., Ltd. Address before: 201318 prosperous industrial zone, Zhou Pu town, Shanghai, Pudong New Area Patentee before: Shanghai Jindun Special Vehicle Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |