CN102091561A - Adaptive proportional liquid mixing device - Google Patents
Adaptive proportional liquid mixing device Download PDFInfo
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- CN102091561A CN102091561A CN2011100046707A CN201110004670A CN102091561A CN 102091561 A CN102091561 A CN 102091561A CN 2011100046707 A CN2011100046707 A CN 2011100046707A CN 201110004670 A CN201110004670 A CN 201110004670A CN 102091561 A CN102091561 A CN 102091561A
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Abstract
The invention discloses an adaptive proportional liquid mixing device comprising a manifold, a main pipeline and a branch pipeline, wherein the main pipeline and the branch pipeline are branched from the manifold and connected in parallel; a mixer is arranged on the branch pipeline; a V-shaped pipe is arranged on the main pipeline; and a floater capable of freely floating in fluid is arranged in a flow channel of the V-shaped pipe. The adaptive compensation proportional mixing device disclosed by the invention adopts a simple mechanical proportional mixing structure, errors in flow distribution/proportion of mixture caused by variations in pressure and flow in each pipeline are dynamically compensated by additionally arranging a floating pressure trimming device, and the accuracy of proportion of mixture of the system is greatly improved under the condition of maintaining the advantages of simple structure, convenience in use and the like of the system.
Description
Technical field
The present invention relates to mechanical field, relate in particular to a kind of liquid self adaptation proportion mixer that liquid mixes in proportion that is used for.
Background technology
All relate to and the soup process of high concentration need be mixed in a lot of fields such as water treatment, food and drink, medical treatment, fire-fighting, the solution that is configured to low concentration is in order to using.Usually the mode that adopts has following several:
1. the maximum mode of current utilization is to adopt measuring pump quantitatively to pump into the high concentration soup, by the detection of the correlation properties of product solution being controlled the flow of measuring pump, realizes concentration control of product solution with this.This popular mode can be controlled the melting concn of soup better, but owing to be by the detection feedback controling mode, the hysteresis in the control is just inevitable; Along with the continuous variation of flow, pressure, need constantly regulate simultaneously, product solution concentration often fluctuates; If the detected parameters not relevant or be not easy to carry out online detection, so just be difficult to adopt measuring pump quantitatively to control with admixing medical solutions.
2. adopt and accurately measure soup with container and mix with other liquid, the acquisition specific concentrations solution.This mode can very accurately be controlled the melting concn of soup, but needs the container of large volume, most critical be on-line continuous to mix, production capacity is very limited.
3. adopt pump proportioner or pressure proportioning tank in the foam fire fighting system usually.Pump proportioner needs etch-proof high accuracy pump, and operation is complicated, and it is long that system starts time.Pressure proportioning tank adopts mechanical structure, but does not have pressure or flow-compensated mechanism, causes mixed proportion de-stabilising effect fire-fighting effect when discharge pressure or changes in flow rate, the waste foam liquid.
Summary of the invention
The objective of the invention is to overcome above-mentioned problems of the prior art, propose a kind of liquid self adaptation proportion mixer.
The technical solution used in the present invention is, design a kind of liquid self adaptation proportion mixer, comprise: main pipe rail, tell main line parallel with one another and bye-pass from main pipe rail, described bye-pass is provided with blender, described main line is provided with the V-arrangement pipe, be provided with in this V-arrangement pipe runner can be in fluid the float of free floating, described main line and bye-pass merge into main pipe rail by threeway.
In preferred embodiment of the present invention, on main line and bye-pass, be provided with throttle regulator.The front end that converges with bye-pass on the described main line is provided with jet mixer.
Compared with prior art, the liquid self adaptation proportion mixer that the present invention proposes adopts simple mechanical type ratio mixed structure, by increase the floating pressure micromatic setting is set, the assignment of traffic that each pipeline of dynamic compensation brings because of pressure, changes in flow rate/mixed proportion error, under the situation that keeps advantages such as system architecture is simple, easy to use, improve the mixed proportion precision of system greatly.
Description of drawings
The present invention will be described in detail below in conjunction with accompanying drawing and preferred embodiment, wherein:
Fig. 1 is a principle schematic of the present invention;
Fig. 2 is the operation principle schematic diagram that V-arrangement is expanded pipeline section and float among the present invention;
Fig. 3 is the theory structure schematic diagram of first embodiment of the invention;
Fig. 4 is the theory structure schematic diagram of second embodiment of the invention.
The specific embodiment
Below the principle of the invention is done following explanation:
1. for parallel pipeline, the main line flow equals each arm flow sum, that is:
2. the drag losses of each bye-pass between A, B point equates, that is:
In the formula,
The equivalent length that comprises local resistance.Now getting two bye-pass structures commonly used analyzes:
Fig. 1 is the parallel pipeline system that is provided with two smooth bye-passes.When initial, bye-pass 7 flows are
, the flow of bye-pass 2 is
, make:
=
Concerning the smooth pipe system, after pipeline was determined, the drag losses of each bye-pass can be written as:
Adjust flow
Become
, each bye-pass feature remains unchanged simultaneously, and the drag losses of each bye-pass is so:
=
Because bye-pass 7 is bigger with bye-pass 2 flow ratios, flow velocity difference is also very big.Usually, under vast scale flow situation, bye-pass 7 fluidised forms of big flow are turbulent flow, and bye-pass 2 fluidised forms of low discharge are laminar flow.
Coefficient of friction
Be reynolds number Re and relative roughness
Function, promptly
For Re＜2000
Bye-pass 2, when fluidised form is laminar flow,
During changes in flow rate, keep constant, need make in order to keep each arm flow proportional
In fact, from
Formula as can be seen, and if only if
,
, promptly flow keeps constant
, it is constant that the flow proportional of each bye-pass could keep.
If adjustment flow
, and
, so,
, substitution
Shi Kede:
Initial each bye-pass flow proportional
, because
,
Be constant,
, order
, so
Flow is adjusted, made
, above-mentioned two formulas with
The formula simultaneous:
Analyze
Formula can find, when adjusting flow and increasing,
, two bye-pass velocity ratios
Less than the initial flow rate ratio
, two bye-pass flow-rate ratios
Less than the initial flow ratio
When the adjustment flow reduces,
, two bye-pass velocity ratios
Greater than the initial flow rate ratio
, two bye-pass flow-rate ratios
Greater than the initial flow ratio
We know by above analysis, and when the flow of each bye-pass differs bigger, when flow velocity differed also big, the Reynolds number of each bye-pass differed bigger, so the fluidised form of each bye-pass is different.As the fruit part bye-pass is turbulent flow, and the part bye-pass is when being laminar flow, and under the situation that occurs changing at flow, it is constant that the flow of each bye-pass can't keep, but change along with the variation of flow.
In main bye-pass, fluid flows with turbulence state, increases by one section vertically arranged V-arrangement pipe therein, in the cross-sectional area increase gradually from top to bottom of V-arrangement pipe.On V-arrangement tubular axis line, be provided with the axisymmetric body float of a solid shape, as shown in Figure 2 simultaneously.In the working face position of float, the fluid passage is the annular space cross section that V-arrangement pipe cross section deducts the float cross section.When fluid passes through the annular space C of V-arrangement pipe 5 and float 6 formation from bottom to top, the float upper and lower side produces differential pressure and forms the power that float rises, when the suffered climbing power of float when being immersed in the fluid float weight, float just rises, and the annular space area increases thereupon, and annular space place rate of flow of fluid descends immediately, float upper and lower side differential pressure reduces, the climbing power that acts on float is also along with minimizing, and when climbing power equaled to be immersed in the fluid float weight, float just was stabilized in a certain height.After V-arrangement pipe and float shape are determined, float in the V-arrangement pipe the position and the flow that passes through corresponding relation is arranged.
House steward's initial flow is
, float position exists
The place, bye- pass 7 and 2 flow proportionals
Because the A pipe is in parallel with the B pipe, so the drag losses of each bye-pass between A, B point is:
The flow of adjusting bye-pass 7 is
, fixedly float position exists
The place, the pipeline feature of each bye-pass does not change like this, bye- pass 7 and 2 flow proportionals
The flow-rate ratio regular meeting of each bye-pass such as the situation of preceding surface analysis change with changes in flow rate at this moment, and its Changing Pattern satisfies
Formula institute revealed law.
Adjusting the bye-pass flow is
, unclamp float, allow float keep free floating.When
When flow increases, annular space place rate of flow of fluid increases, and float top and bottom institute pressure difference increases, the float come-up, the annular space area increases thereupon, annular space place rate of flow of fluid descends, and float top and bottom pressure reduction reduces, and the suffered buoyancy of float reduces, when climbing power equaled to be immersed in the fluid float weight, float was stabilized in
The place.In the V-arrangement pipe,
The place the annular space area greater than
Therefore the annular space area at place at the flow that keeps bye-pass 7 is equally
Situation under, fluid is little than float fixedly the time through the drag losses of V-arrangement pipe, so the loss of bye-pass 7 overall resistance also diminishes.Because
So bye-pass 2 drag losseses also can diminish.Therefore, the flow velocity of bye-pass 2 also can reduce, corresponding discharge
Also reduce.So, the relative fixed pipeline, when flow increased, bye-pass 7 increased to some extent with the flow ratio of bye-pass 2.From here as can be seen, when flow increased, the come-up of float can compensate a part under fixing bye-pass situation in the V-arrangement pipe, the decline of bye-pass 7 and bye-pass 2 flow proportionals.
On the contrary, when flow reduced, the decline of float can be subdued a part under fixing bye-pass situation, the increase of bye-pass 7 and bye-pass 2 flow proportionals in the V-arrangement pipe.
The float that changes in flow rate causes in the V-arrangement passage lifting and the variation of the annular space area that causes directly has influence on the variation of each bye-pass flow proportional.
From above hydromechanical analysis as can be seen, the float that can move freely in suitable V-arrangement passage and the V-arrangement passage is set on the turbulent flow pipeline, the compensation partly or completely that each the bye-pass flow proportional that can accomplish changes in flow rate is caused changes, greatly stablize the flow proportional between each bye-pass, improve each bye-pass mixed-precision, even make that it is constant that the flow proportional between each bye-pass can keep under pressure that changes and flow.
More than analyzing is to carry out at plain tube, in fact, non-plain tube is also had similar effects.
The liquid self adaptation proportion mixer that the present invention proposes just is based on above-mentioned flow dynamics analysis realization, it is made up of main pipe rail, main line and bye-pass, wherein main line and bye-pass are connected in parallel, and main line has identical starting point and terminal point with bye-pass on main pipe rail.The bye-pass caliber is less and be provided with blender, is used for providing highly concentrated solution to main line.Main line is the main thoroughfare of fluid, and caliber is bigger, main line be provided with one section vertical install, up big and down small V-arrangement pipe, and in V-arrangement pipe runner, be provided with can be in fluid the float of free floating.The shape of V-arrangement pipe and the shape of float and quality are after system global structure typing, come by experiment to determine, with realization master, bye-pass mixed proportion compensation of error are expected.Preferably, regulate for convenience, on main line and bye-pass, be provided with throttle regulator.
The first embodiment of the present invention comprises water inlet manifold road 1, tells from main pipe rail as shown in Figure 3, main line 2 parallel with one another and bye-pass 7.Series connection is provided with throttle regulator 3 and the V-arrangement pipe 5 that has float 6 on the main line 2.Bye-pass 7 is provided with gas and water mixer 10 and throttle regulator 14.Be attached with resistance counting rate meter 19 with water spot on the main pipe rail.In the present embodiment, main pipe rail and main line all adopt 3/42PVC material smooth pipe.Bye-pass adopts the 6mm nylon hose.Main line is connected by reducing tee 18 with bye-pass.Throttle regulator 3 on the main line adopts the 3/4PVC ball valve, and purpose is to fall in order to produce suitable pressure on main line, for bye-pass provides power.In the present embodiment, the V-arrangement pipe 5 of band float 6 adopts the panel type suspended body flowmeter of lucite material, and the awl half-angle of V-arrangement pipe is about 2 °, V-arrangement length of pipe section 100mm, initial caliber 10mm, latter end caliber 18.5mm in the pipe.Float adopts 316 stainless steels, cylindrical structure, and the lower end is a cone, about 4 grams of quality.Throttle regulator 14 on the bye-pass 7 adopts 6mm stainless steel needle-valves, be used for accurately adjusting and the control bye-pass on flow.Gas and water mixer 10 on the bye-pass adopts the film dialysis apparatus.This device is provided with water inlet 8, delivery port 13 and air inlet 11 and exhaust outlet 9.In the present embodiment, CO2 gas enters film dialysis apparatus 10 by air inlet 11, and tail gas is by exhaust outlet 9 dischargings.Gas and water mixer inside is provided with membrane component 12, by membrane component 12 the gas and water mixer internal insulation is become gas phase and liquid phase.The CO2 gas permeation membrane component of gas phase end enters liquid phase, makes the deionized water of liquid phase end become the CO2 saturated solution of high concentration.The liquid phase end connects into seal channel by liquid inlet and outlet and bye-pass 7.The CO2 saturated solution accurately adjust by needle-valve 14 and the control flow after mix with deionized water in the main line by reducing tee interface 18, form the CO2 solution of specific concentrations, the CO2 concentration of this solution and the resistivity value of this solution have corresponding relation, the resistivity value that stable CO2 concentration is corresponding specific.
During operation, throttle regulator 3 apertures on the main line 2 are set to 95%, insert deionized water, and keeping initial flow is 4 liters/minute.The throttle regulator of slowly opening on the bye-pass 7 14 adopts needle-valve, and making the CO2 solution resistance rate on the main pipe rail 1 is 0.50MW * cm.Float in the flowmeter is stabilized in the position that is labeled as 4L/MIN at this moment.After adjusting water consumption and being 16 liters/minute, the float in the flowmeter is subjected to buoyancy and increases, on keep stable after floating to the position that is labeled as 16L/MIN, the overcurrent annular space area in the V-arrangement pipe increases, partial drop of pressure reduces.The resistivity value of the CO2 solution resistance counting rate meter mensuration on the main pipe rail 1 remains on 0.48MW * cm at this moment, compare the situation that resistivity value when float V-arrangement flowmeter for pipe is not set can float to 0.42MW * cm from 0.50 MW * cm, illustrate that the CO2 mixed-precision that adopts behind the present invention is greatly improved.
Second embodiment of the present invention comprises water inlet manifold road 1 as shown in Figure 4, main line 2 and bye-pass 7.Main line 2 is connected by threeway 18 with bye-pass 7 section starts, and is terminal then to be bye-pass 7 connect by the venturi nozzle blender 17 that is provided with on the main line.Blender 10 on the bye-pass adopts Pressure capsule formula hermetically sealed can, and the blender rear end is provided with adjustable throttling 16.Main line 2 adopts the PVC plain tube of nominal diameter 50mm, and V-arrangement pipe 5 adopts glass rotameter, and V-arrangement pipeline section 5 is about 260mm in the pipe, and the awl half-angle is about 2.5 °; Float 6 adopts the stainless steel disc rotor, heavily about 12 grams; Venturi nozzle blender 17 jet size 41mm, trunnion is of a size of 45mm.Bye-pass 7 adopts the pvc pipe of nominal diameter 12.5mm; 100 liters of Pressure capsule formula hermetically sealed can volumes, capsule is equipped with 70 liters of soups.
During operation, main pipe rail 1 inserts water under high pressure, and flow is 60 liters/minute.Import main line 2 and bye-pass 7 respectively by threeway 18.The water under high pressure of bye-pass enters tank body by the water inlet of Pressure capsule formula hermetically sealed can, pressure passes to the capsule 23 in the tank body, soup in the capsule is extruded, mix with water under high pressure in the main line by venturi nozzle blender 17, regulate adjustable throttling 16, make the foam liquid stoste that the aqueous solution forms 0.15% concentration that of spout 15.After adjusting person in charge flow was 120 liters/minute, the float in the float V-arrangement tubular type flowmeter was increased by buoyancy, the float come-up, annular space strengthens around the float, flow velocity descends, and the suffered buoyancy of float keeps being stabilized in reposition after the balance again, and the local pressure in the V-arrangement pipe falls and reduces at this moment.Detect the aqueous solution that of spout 15, its concentration remains on 0.16%, compares when float V-arrangement pipe is not set, and solution concentration floats under 0.25% the situation from 0.15%, adopts the solution mixed proportion precision behind the present invention significantly to improve.
Claims (10)
1. liquid self adaptation proportion mixer, it is characterized in that comprising: main pipe rail, tell main line parallel with one another and bye-pass from main pipe rail, described bye-pass is provided with blender, described main line is provided with the V-arrangement pipe, be provided with in this V-arrangement pipe runner can be in fluid the float of free floating.
2. adaptive equalization proportion mixer according to claim 1 is characterized in that: on the described bye-pass, the blender rear end is provided with throttle regulator.
3. liquid self adaptation proportion mixer according to claim 2 is characterized in that: described throttle regulator adopts 3/4PVC ball valve or 6mm stainless steel needle-valve.
4. liquid self adaptation proportion mixer according to claim 1 is characterized in that: the section start of described main line and described bye-pass is connected by threeway with terminal.
5. liquid self adaptation proportion mixer according to claim 1 is characterized in that: the section start of described main line and described bye-pass is connected by threeway, terminal venturi nozzle blender connection by being provided with on the main line.
6. liquid self adaptation proportion mixer according to claim 1 is characterized in that: on the described main line, V-arrangement pipeline section front end is provided with control valve.
7. liquid self adaptation proportion mixer according to claim 1 is characterized in that: described mixing arrangement adopts the film dialysis apparatus of permeable watertight.
8. liquid self adaptation proportion mixer according to claim 1 is characterized in that: described mixing arrangement adopts Pressure capsule formula hermetically sealed can.
9. liquid self adaptation proportion mixer according to claim 1 is characterized in that: the V-arrangement pipe on the described main line adopts glass rotameter.
10. liquid self adaptation proportion mixer according to claim 1 is characterized in that: described V-arrangement pipe adopts the panel type suspended body flowmeter of lucite material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100046707A CN102091561A (en) | 2011-01-11 | 2011-01-11 | Adaptive proportional liquid mixing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100046707A CN102091561A (en) | 2011-01-11 | 2011-01-11 | Adaptive proportional liquid mixing device |
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| CN102091561A true CN102091561A (en) | 2011-06-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841984A (en) * | 2016-03-18 | 2016-08-10 | 中国石油天然气股份有限公司 | Polymer injection allocation technology equipment detection evaluation apparatus |
| CN107638818A (en) * | 2017-10-26 | 2018-01-30 | 中冶北方（大连）工程技术有限公司 | Tubular type medicament preparation facilities and method |
| CN115448397A (en) * | 2022-09-29 | 2022-12-09 | 中国科学院武汉病毒研究所 | Continuous wastewater treatment device and method with accurate and stable temperature control |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4018077A (en) * | 1974-11-22 | 1977-04-19 | George Kent Limited | Apparatus for providing a controlled concentration of a substance in a flow of liquid |
| JP2000288377A (en) * | 1999-04-06 | 2000-10-17 | Hatsuta Seisakusho Co Ltd | Bubble mixing apparatus |
| CN101181977A (en) * | 2007-11-23 | 2008-05-21 | 中国计量科学研究院 | Ozone standard gas generating apparatus |
-
2011
- 2011-01-11 CN CN2011100046707A patent/CN102091561A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4018077A (en) * | 1974-11-22 | 1977-04-19 | George Kent Limited | Apparatus for providing a controlled concentration of a substance in a flow of liquid |
| JP2000288377A (en) * | 1999-04-06 | 2000-10-17 | Hatsuta Seisakusho Co Ltd | Bubble mixing apparatus |
| CN101181977A (en) * | 2007-11-23 | 2008-05-21 | 中国计量科学研究院 | Ozone standard gas generating apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841984A (en) * | 2016-03-18 | 2016-08-10 | 中国石油天然气股份有限公司 | Polymer injection allocation technology equipment detection evaluation apparatus |
| CN107638818A (en) * | 2017-10-26 | 2018-01-30 | 中冶北方（大连）工程技术有限公司 | Tubular type medicament preparation facilities and method |
| CN115448397A (en) * | 2022-09-29 | 2022-12-09 | 中国科学院武汉病毒研究所 | Continuous wastewater treatment device and method with accurate and stable temperature control |
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Address after: 518055 Guangdong city of Shenzhen province Nanshan District Oriental Science Park Branch Building 2 floor E block Applicant after: Shenzhen Ultrapure Environmental Technology Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District Oriental Science Park Branch Building 2 floor E block Applicant before: Shenzhen Ultrapure Environmental Engineering Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHENZHEN ULTRAPURE ENVIRONMENTAL ENGINEERING CO., LTD. TO: SHENZHEN ULTRAPURE ENVIRONMENTAL TECHNOLOGY CO., LTD. |
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