CN106197591A - Based on devices and methods therefor steam flow being evaporated, measure and regulating - Google Patents
Based on devices and methods therefor steam flow being evaporated, measure and regulating Download PDFInfo
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- CN106197591A CN106197591A CN201610519567.9A CN201610519567A CN106197591A CN 106197591 A CN106197591 A CN 106197591A CN 201610519567 A CN201610519567 A CN 201610519567A CN 106197591 A CN106197591 A CN 106197591A
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims abstract description 84
- 230000008020 evaporation Effects 0.000 claims abstract description 81
- 238000005303 weighing Methods 0.000 claims abstract description 44
- 230000033228 biological regulation Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 17
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- 229910052751 metal Inorganic materials 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
- G01F9/001—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine with electric, electro-mechanic or electronic means
- G01F9/003—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine with electric, electro-mechanic or electronic means by measuring the weight
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
- G05D7/0641—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means using a plurality of throttling means
- G05D7/0647—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means using a plurality of throttling means the plurality of throttling means being arranged in series
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of based on devices and methods therefor steam flow being evaporated, measure and regulating, add and hot tank is provided with container for evaporation, add and weighing apparatus and display system are installed in hot tank, and weighing apparatus is connected with container for evaporation and display system simultaneously, container for evaporation connects jet chimney, one end of jet chimney is internal with container for evaporation to be connected, and is provided with stop valve on jet chimney, and stop valve can cut off the jet chimney of correspondence.By balance weight method, steam flow is measured, add heater temperature by regulation container for evaporation steam flow is controlled, there is good reliability, use that temperature is high, be applicable to the metering of less steam flow, steam flow can be controlled and the simple advantage of apparatus structure, effective supplementing can be formed for existing steam-flow meter, solve poor reliability that existing steam-flow meter exists, use that temperature is low, be not suitable for the metering of less steam flow and cannot be carried out the problem of flow-control.
Description
Technical field
The invention belongs to the metering of flow and control technical field, being specifically related to one and steam based on to steam flow
The devices and methods therefor send out, measuring and regulating.
Background technology
The metering of steam flow is one crucial technology of chemical field, currently mainly uses vortex-shedding meter or differential pressure stream
Gauge carries out the metering of steam flow.After having evaporated, the deposit that high-temperature steam cooling produces can block and corrode effusion meter,
Therefore measuring accuracy is gradually reduced, and easily causes the inefficacy of effusion meter.Steam-flow meter use temperature typically below 350 DEG C,
The evaporating temperature steam more than 350 DEG C can not be measured, and be not suitable for the metering of less steam flow.It addition, steam stream
The metering being mainly used in steam flow of gauge, typically without the control function of steam flow, it is therefore desirable to find new steam stream
The metering of amount and control method.
Document 1, the Chinese patent of Patent No. 201410047972.6, disclose the steam vortex street of a kind of measuring multiple parameters
Effusion meter, swirl generating body is arranged in the endoporus that pipe table body measured by band, measures the outside of pipe table body at band and is positioned at vortex and sends out
The vertical open pores just below of raw body install described in flow transducer, band measure pipe table body be arranged above support barrel mast,
Described support barrel mast covers flow transducer, and described flow integrator is arranged on the end, upper end supporting barrel mast.The present invention
The parameter that can measure steam is many, broad quantum, and the precision of measurement steam is high, the pressure loss is little, and multiple sensors is based on integration
Design, flowmeter structure is compact, the advantage such as reliability height, low cost of manufacture, working service convenience, life of product length, have employed
Resistant to elevated temperatures flow transducer and temperature sensor so that the steam vortex flowmeter of this measuring multiple parameters can measure saturated steaming
Vapour can measure again the superheated steam of higher temperature.
Document 2, the Chinese patent of Patent No. 03820649.8 relates to a kind of method, wherein utilizes bluff body (20) at stream
Body produces vortex, and determines the repetition rate producing vortex.The repetition rate determined for calculating flow measurement (XV),
It represents volume flow or flow velocity.Additionally, two measurement point (M1, the M2) records being separated from each other in the flowing direction act on stream
Two pressure p 1 and p2 of body.In these pressure, at least one is at least with repetition rate periodically-varied.Pressure p 1 He of record
P2 is used for generating pressure measuring value (Xp), and its representative at least partly acts on one section of average time period in the flowing direction
Average dynamic pressure.Pressure measuring value (Xp) and flow measurement (XV) are for determining the mass flow measurement (Xm) of fluid.
Document 3, the Chinese patent of Patent No. 200710133653.7 relates to a kind of effusion meter, is specially a kind of split type
Vortex-shedding meter.It is made up of with digital signal processing module sensor, conditioning circuit module, three kinds of sensors and modulate circuit
Module is placed in the tested scene of high temperature, and digital signal processing module is under normal temperature environment, between module by shielded cable even
Connect, transmit signal with the form of differential signal.It solve prior art and may not apply to the technical problem of hot environment, permissible
It is applied to hot environment and needs the special occasions of split type instrument, there is good capacity of resisting disturbance and reliability.
Document 4, the Chinese patent of Patent No. 201320110735.0 relates to one and is applicable to industrial automation instrument neck
The flowmeter in territory, especially relates to a kind of steam-flow meter, and it includes interior wimble device, interior wimble device is combined with successively cold
Condenser, difference become assembly and buckling assembly, and interior wimble device is from the V-arrangement inner cone measured with on pipe, the support measured in pipe, support
Body forms；This utility model structure is unique, facilitate user installation, height accurate to flow measurement of steam, scene can show many seed ginsengs
Count and have 485 communication interfaces, be easy to user transmission, gather and manage.
Document 5, the Chinese patent of Patent No. 200910011212.9 relates to heavy crude heat extraction steam and drives steam injection well high temperature height
The thick oil thermal extraction saturated steam flow metering method of pressure saturated vapor one-well metering, is to pass through thick oil thermal extraction saturated steam
Effusion meter realizes, and this effusion meter is made up of pressure transducer, display, differential pressure variator, V-type cone, temperature sensor: pressure
Force transducer is threadeded with metering pipeline, display and pressure transducer, differential pressure transmitter, temperature sensor screw thread, and V-type is bored
Body is welded to connect with differential pressure transmitter；The method is to be connected with manifold and steam injection well screw thread by thick oil thermal extraction saturated steam effusion meter
Connect, produce differential pressure at V-type cone two ends when steam passes through this effusion meter, it is achieved that the accurate measurement to saturated vapor flow velocity,
With differential pressure variator, flow velocity is converted into flow signal send into calculating system and show steam one-well metering at any time.The method solves
The problem that can not measure single well flow in prior art.The present invention can be used for heavy crude heat extraction steam drive steam injection well High Temperature High Pressure satisfy
With in steam one-well metering.
Document 6, Patent No. 200820068517.4 discloses a kind of integrated pressure-differential type steam flow meter, including throttling
Device, the ring flange in throttling arrangement is arranged on measurement pipe, is provided with orifice plate, is respectively placed in the pressure of orifice plate both sides in measuring pipe
Pipe extend in high pressure room and the low pressure room of equalizing reservoir, and equalizing reservoir is connected by pressure guiding pipe and three valve groups, three valve groups
It is connected with differential pressure meter.The pressure room part of pressure guiding pipe, three valve groups and differential pressure meter is under the liquid level of equalizing reservoir, and has
Downward inclination angle.In this utility model, the equipment such as throttling arrangement, pressure pipe, equalizing reservoir and differential pressure meter is integrated,
Decrease the workload of on-the-spot processing and fabricating, facilitate in-site installation, improve work efficiency, reduce the skill of in-site installation personnel
Energy；After integration, it is ensured that the reliability of device, improve the quality of product
Document 7, the Chinese patent of Patent No. 201220685281.5 discloses the differential pressure type of a kind of intelligent measure steam flow
Effusion meter and pressure tester, it include throttling element, connecting pipe, its also include differential pressure transmitter or intelligent flow-integrating instrument, described
Differential pressure transmitter or intelligent flow-integrating instrument be connected with the positive and negative pressure chamber of throttling element respectively, wherein with plemum by connecting pipe
The connecting pipe connected is plemum conduit, and the pilot being connected with negative pressure chamber is negative pressure chamber's conduit, and described plemum conduit is with negative
More than one group serpentine pipe, a diameter of 1mm～40mm of described serpentine pipe, serpentine pipe and horizontal plane angle it is respectively provided with on pressure chamber conduit
It is 0～45 DEG C, described plemum conduit and negative pressure chamber's conduit further respectively has a switch valve or is provided with three valve groups
It is simultaneously connected with plemum conduit and negative pressure chamber's conduit, serpentine pipe and differential pressure transmitter or intelligent flow on described plemum conduit
The pipeline that integrating instrument connects is additionally provided with pressure transducer.This utility model fills connecting pipe, compact conformation, volume without anti-icing fluid
Little.
Document 8, the Chinese patent of Patent No. 201320155941.3 discloses a kind of condensation weighing method steam-flow meter
Amount standard set-up, including vacuum tank, temperature transmitter, pressure transmitter, effusion meter, manual ball valve, pneumatic ball valve, pneumatic butterfly
Valve, pneumatic control valve, direct-operated regulator, meter-clamping apparatus, electronic scale, condenser, cooling tower, water pump, each parts are by pipeline even
Connect.Vapour source is by after vacuum tank, and pressure regulation enters calibrating pipeline, by tested effusion meter, enters condenser, by accredited steaming
The steam of steam flow gauge all condenses, and condensed water is carried out Weighing, the condensate quality weighed with pass through steam
The quality of steam of effusion meter compares, and completes the calibrating to steam-flow meter, improves automaticity, and temperature, pressure can
Control, can examine and determine multiple caliber effusion meter, and the accuracy of measuring is reliable, and calibrating efficiency is high, plays certain effect for national energy-saving consumption reduction.
Document 9, nineteen eighty-three 03 periodical delivered Guangzhou Nitrogenous Fertilizer Factory and succeeded in developing a kind of steam flow caliberating device, can be to work
Industry steam-flow meter carries out verification and demarcates.It uses timing weight method in kind, and steam is first condensed into water, then water is weighed with
Determine steam flow.This device is made up of vapour source, condenser, timer, weighing utensil and various monitoring instrument.Small investment,
Energy consumption is low, the more reduction of cumulative flow.
Document 10, within 2009,02 phase periodical discloses the analysis on Uncertainty of steam real stream calibrating vortex-shedding meter, flux of vortex street
Count by a large amount of, be widely used in the metering of steam flow, the calibrating of vortex-shedding meter is currently mainly used and replaces with air
Steam is examined and determine as calibrating medium, inevitably has a certain impact verification result.Article is based on condensation weighing method
Vortex-shedding meter is examined and determine by steam flow assay device, and is analyzed result, gives and fixs real the failing to be sold at auction of steam
Uncertainty evaluation method and result.
Document 11, the Chinese patent of Patent No. 201210564802.6 discloses a kind of for dynamic gas flow analysis
Weight-loss method detection of gas flow rate method.It uses following detecting step: set up the Dynamic link library of electronic balance and computer, starts
Gas generator and beginning timing and weighing, the volumetric flow of gas of unit of account time, obtain flow-time curve figure, inspection
Survey data process&analysis.It utilizes the Dynamic link library of electronic balance and computer, the gaseous mass of real-time detected gas generator
Flow, utilizes the weighing software of computer to complete to detect accordingly process, including: balance type selecting and configuration, the conversion of volume flow, inspection
Survey the setting of duration, the drafting of flow-time curve figure, data process&analysis.It is widely used in all kinds of middle-size and small-size gas
The detection of gas flow rate of generator, it is also possible to the gas flow for quality change corresponding with the time dynamically detects.The present invention has
There are simple to operate, detection safety, and the advantage that the high and on-the-spot adaptability of accuracy of detection is good.
Document 12, the Chinese patent of Patent No. 201110147057.0 discloses a kind of mass flow based on weight method
Meter, including container, the top of container is provided with water inlet, and bottom is provided with outlet, and the bottom of container is provided with LOAD CELLS, container
The lower section of interior water inlet is provided with water conservancy diversion and anti-impact device.When can reduce flow dynamics measurement, hydraulic shock power symmetry retransmits
The measurement error that sensor causes, and the bigger impurity in drainage can be crossed by this device, solve line clogging and water circulation system
Unite a most smooth difficult problem.
Document 13, the United States Patent (USP) of Patent No. US20060464514 discloses A fabric treatment
appliance comprises a steam generator having a chamber configured to hold
Water, a supply conduit configured to transport water to the steam generator
Chamber, a weight sensor outputting a signal responsive to the weight of the
Steam generator, and a controller coupled to the weight sensor and configured
to control a flow of water through the supply conduit based on the signal
from the weight sensor. The disclosure provides methods of water supply
control that can employ the weight sensor.
Document 14, the Chinese patent of Patent No. 200510131200.1 discloses a kind of weightless effusion meter and weight-loss method flow control
Device processed.It solving flow detection device structure used during existing industrial automation produces complicated, cost is high, and easy loss etc. is asked
Topic, has simple in construction, has antiseptic power, measures accurately, the advantages such as control mode is flexible.Its structure is: a kind of weight-loss method
Effusion meter and weight-loss method flow controller, it has power supply, also includes sensor, and sensor will measure the gravimetric value signal warp of gained
Amplifier and digitizer send into microprocessor after being converted to digital signal；Microprocessor is defeated after processing signal
Go out；This control signal can also pass through interface circuit and upper machine communication, weight and flow value is transferred on host computer, it is simple to
The monitoring management of host computer, the gravimetric value recorded is simultaneously fed in memorizer, it is simple to process query in the future；Weight and flow value
Can be shown by display, microprocessor arranges parameter also by key device.
Document 15, the Chinese patent of Patent No. 201010120967.5 discloses the dynamic weighing of a kind of high-viscosity fluid
System and method, the scale body outfan of this system is connected with weight display instrument and weighing controller simultaneously, this Weighing control
The output control terminal of device is connected with high-viscosity fluid barrel pump by converter, and this high-viscosity fluid barrel pump is high viscous by being inserted into
High-viscosity fluid is pumped into scale body by the pump rod in property fluid charging basket；The method uses high-viscosity fluid barrel pump by high-viscosity fluid pump
Getting in scale body, weighing-up wave is fed back in weighing controller by scale body, and weighing controller is the poorest according to controlling parameter employing
Value penalty method and to measure minimum stream mensuration and by the pump speed of Frequency Converter Control high-viscosity fluid barrel pump.The present invention is reasonable in design,
Achieve and high-viscosity fluid is dynamically precisely weighed function, it is ensured that weighing precision and speed of weighing, meet high viscosity
The requirement being dynamically precisely weighed of fluid, has feature easy to use, applied widely simultaneously.
Document 16, it is high that the Chinese patent of Patent No. CN 200710147395 discloses a kind of detection control accuracy, available
Flow controller in deep-etching liquid.Employing is weighed and weightless two ways measures flow.Output takes step type electric to hold
The method of row device control flow realizes the continuous-stable of fluid flow and controls, flow pulse free composition.Use weightless self-correction
Algorithm is tracked curve amendment, can realize flow accumulation error and level off to zero.The present invention mainly by buffer barrel, weighing bucket, enters,
Tapping electromagnetic valve and weight display, intelligent controller and step type electric actuator valve composition.Weighing bucket when adding liquid level be by
Buffer barrel tapping completes.When weighing bucket liquid level rises, YE valve outlet port flow increases, and stepping YE valve is wanted
Progressively go back to pass.When weighing bucket liquid level declines, valve is progressively opened, to keep flow constant.Go round and begin again.Stepping YE
Valve returns pass speed and to open speed the most equal with weighing bucket liquid weight climbing speed and the flat root of fall off rate, makes flow-control
Become a stable straight line.
The metering method of document 1～7 pairs of steam flows is described, and mainly has vortex street and the two kinds of steam of differential pressure
Effusion meter, for the metering of big flow steam, and the function controlled without steam flow.
Document 8,9,10 utilizes weight method to weigh condensed steam, for the mark to steam-flow meter accuracy
Fixed, it is impossible to as steam-flow meter, only as the caliberating device of steam-flow meter.Document 11 utilizes weight method to gas flow
Measure, but without heating system, and without the function automatically controlled, be not suitable for automatically controlling of steam flow.Document 12,
13 utilize weight method measure the flow of the liquid such as water or control, but this system is in open environment, and nothing
The function that steam flow controls.Document 14,15,16 utilizes weight method to count the flow of deep-etching liquid, high-viscosity fluid
Amount, and there is the automatic control function of flow, but this system is in open environment, is not suitable for the flow of high-temperature steam
Metering and control.
To sum up narrate, so above-mentioned literature research purpose differs with scheme.
Summary of the invention
The technical problem to be solved is the poor reliability of existing steam-flow meter existence, uses temperature low, no
It is applicable to the metering of less steam flow and cannot be carried out flow-control, it is therefore intended that providing one to carry out based on to steam flow
Evaporation, the devices and methods therefor measuring and regulating, measured steam flow by balance weight method, is held by regulation evaporation
Device adds heater temperature and is controlled steam flow, has good reliability, uses the meter that temperature is high, be applicable to less steam flow
Measure, steam flow can be controlled and the simple advantage of apparatus structure, it is possible to formed effectively for existing steam-flow meter
Supplement, solve existing steam-flow meter exist poor reliability, use temperature is low, be not suitable for the metering of less steam flow
And the problem that cannot be carried out flow-control.
The present invention is achieved through the following technical solutions: based on the device being evaporated steam flow, measure and regulating, bag
Include inner hollow adds hot tank, described in add hot tank be provided with container for evaporation, add and weighing apparatus and display system be installed in hot tank,
And weighing apparatus is connected with container for evaporation and display system simultaneously, container for evaporation connects jet chimney, one end of jet chimney and
The internal connection of container for evaporation, and on jet chimney, it is provided with stop valve, and stop valve can cut off the jet chimney of correspondence.Steam
The volume sending out container determines according to the weight of evaporated material, employing 316 or the more preferable material of corrosion resistance, seals and utilizes metal close
Seal seals.There is the method utilizing balance weight method to carry out flow measurement in prior art, but is not suitable for steam flow
Metering, and without the function of flow-control.This patent is called method in the following text by balance and is weighed container for evaporation, passes through unit of account
Weightlessness in time obtains the steam flow of steam.The temperature being added hot tank by regulation container for evaporation makes steam flow close to plan
Control flow, reach the metering of steam flow and the purpose of control.The sensor of this control method is electronic balance, not with steaming
Vapour directly contacts, and steam will not produce corrosion to electronic balance and then affect precision, the most there is not asking of control accuracy decline
Topic, stability is high.Balance of weighing, outside container for evaporation adds hot tank, is connected with container for evaporation by an one metal wire, is not evaporated
The impact of temperature, therefore evaporating temperature is higher.The method utilizes balance to call method in the following text and weighs evaporator, need not add whole
Hot systems is weighed, and pipeline connection utilizes corrugated flexible hose, reduces the connection pipeline STRESS VARIATION impact on measurement result accuracy,
Disclosure satisfy that the required precision that low discharge measures.
Weighing apparatus is electronic balance.In evaporation process, the weight of container for evaporation can be changed output extremely by electronic balance
Display system, electronic balance has bottom scale hook, and range should be more than container for evaporation and the weight summation of evaporated material.My god
Flat need have data-interface, it is possible to input weight data to display system.
Jet chimney is corrugated tube and metal hard tube, and corrugated tube is internal with container for evaporation to be connected, and corrugated tube holds away from evaporation
One end of device connects with metal hard tube, and stop valve is arranged on metal hard tube.Measurement error mostlys come from evaporation process and connects
The STRESS VARIATION in adapter road, is connected with corrugated flexible hose between evaporator with jet chimney, and the internal stress of corrugated flexible hose is original very
Little, the corrugated flexible hose STRESS VARIATION caused due to evaporator positional fluctuation is less, even if therefore also can with the presence of corrugated flexible hose
The enough weight to evaporator changes and carries out precise.In order to prevent steam corrosion corrugated flexible hose from causing steam to leak, ripple is soft
Pipe regularly replaces.
Based on method steam flow being evaporated, measure and regulating, evaporated material after weighing is placed on evaporation and holds
In device and seal, being placed on by container for evaporation and add in hot tank, weighing apparatus is arranged on heating box top, and container for evaporation is by gold
Belonging to silk and be connected so that container for evaporation is unsettled with weighing apparatus bottom suspension hook, container for evaporation is connected with metal hard tube by corrugated tube,
The range of weighing apparatus is more than container for evaporation and the weight summation of evaporated material, after using protection gas to empty container for evaporation, opens
Display system, arranges time interval dt reading weighing apparatus display numerical value, in dm is dt according to actual needs by display system
The difference of weighing apparatus display numerical value, display system can show the numerical value i.e. steam flow of dm/dt.Start and add hot tank to evaporation appearance
Device, jet chimney heat, and set according to the character of evaporated material and add heater temperature, and in the starting stage, steam flow reaches not
Controlling flow to plan, along with the rising of evaporated material temperature, steam flow is gradually increased, when the flow of evaporated material will reach
During to plan control flow, the temperature utilizing manual mode regulation to add hot tank carries out the control of flow, if steam flow is the lowest
Control flow in plan, then heighten and add heater temperature, until steam flow controls flow close to plan, if steam flow is the highest
Controlling flow in plan, then turn down and add heater temperature, until steam flow controls flow close to plan, evaporation process reaches predetermined
After time or evaporated material evaporate substantially, heat container front and back end stop valve will be added and close, and turn off heating system, carry out cold
But.Call method in the following text by electronic balance container for evaporation is weighed, obtained the steaming of steam by the weightlessness in the unit of account time
Steam flow amount.The temperature being added hot tank by regulation container for evaporation makes steam flow control flow close to plan, reaches steam flow
Metering and the purpose controlled.The sensor of this control method is electronic balance, does not directly contact with steam, and steam will not be to electricity
Sub-balance produces corrosion and then affects precision, the most there is not the problem that control accuracy declines, and stability is high.The electronics sky weighed
Put down outside container for evaporation adds hot tank, be connected with container for evaporation by an one metal wire, do not affected by evaporating temperature, therefore evaporate
Temperature is higher.The method utilizes balance to call method in the following text and weighs evaporator, and pipeline connection utilizes corrugated flexible hose, reduces connection
The pipe stress change impact on measurement result accuracy, it is possible to meet the required precision of low discharge metering.
The present invention compared with prior art, has such advantages as and beneficial effect:
(1) by the evaporator in evaporation process being weighed and weightlessness in the unit of account time obtains the steam stream of steam
Amount, the method blocks or corrodes effusion meter after not cooled down by steam to be affected, reliable and stable；
(2) the use temperature of this device is high, it is possible to realize the flow of 800 DEG C of steam is measured and controlled；
(3) this device utilizes balance to call method in the following text only to weigh evaporator, and pipeline connects and utilizes metal bellow, reduces
Connect the impact on measurement result accuracy of the pipeline STRESS VARIATION, it is adaptable to the metering of less steam flow；
(4) this device adds the temperature of hot tank by regulation container for evaporation thus controls the steam flow of steam, can realize steam stream
The control of amount.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the Flow-rate adjustment experimental result schematic diagram of embodiment 1；
Fig. 3 is the Flow-rate adjustment experimental result schematic diagram of embodiment 2
The parts title of labelling and correspondence in accompanying drawing:
1-adds hot tank, 2-container for evaporation, 3-stop valve, 4-corrugated tube, 5-display system, 6-electronic balance, 7-metal hard tube.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1:
As shown in Figure 1 and Figure 2, to NbCl5The evaporation of steam flow, measure and regulate, by the NbCl of 200g5Powder loads evaporation
In container 2, being placed on electronic balance 6 and weigh after then being sealed by container for evaporation 2, gross weight is 9830.91g.By close
The container for evaporation 2 being honored as a queen is arranged on and adds in hot tank 1, and electronic balance display weight is 9847.83g.Use protection gas that evaporation is held
After device emptying, opening display system 5 and show flow value, steam flow dm/dt time interval is 5s, NbCl5Effusion meter
Draw and control as 0.10g/s.Startup adds hot tank and heats container for evaporation, jet chimney, and be provided with container for evaporation adds hot tank
Temperature be set in 270 DEG C, the temperature adding hot tank being provided with jet chimney is set in 270 DEG C.Container for evaporation in evaporation process
Weight change and steam flow as in figure 2 it is shown, in the starting stage, steam flow does not reaches setting flow, along with evaporated material
The rising of temperature, steam flow is gradually increased, and works as NbCl5When flow reaches 0.10g/s, manual mode regulation is utilized to add hot tank
Temperature carries out NbCl5The control of flow.When steam flow is significantly lower than 0.10g/s, suitably heighten the temperature adding hot tank, until steaming
Steam flow amount is close to 0.10g/s.When steam flow is apparently higher than 0.10g/s, suitably reduce the temperature adding hot tank, until steam flow
Close to 0.10g/s.After evaporation a period of time, NbCl5Substantially use up, NbCl5Flow-reduction, will add heat container front and back end stop valve
Close, stop container for evaporation and jet chimney are heated.The display weight of last balance is 9672.36g, in whole evaporation process
The weightlessness of on-line weighing is 175.52g.Completely after cooling, container for evaporation is dismantled, is then placed within balance weighing, always
Weight is 9657.52g, NbCl in whole evaporation process5Actual weightlessness be 173.39g, with the weightlessness of on-line weighing basic one
Cause, illustrate that the steam flow obtained by online weighing method is accurately.As seen from Figure 2, at NbCl5Steam flow manual
During control, steam flow has a certain degree of fluctuation, but flowed fluctuation range-controllable, say and utilize this device to carry out
NbCl5The control of flow.
Embodiment 2:
As shown in Figure 1, Figure 3, to TiCl4The evaporation of steam flow, measure and regulate, by the TiCl of 500g4Load container for evaporation
In, it being placed on electronic balance after then container for evaporation being sealed and weigh, gross weight is 10130.42g.After sealing
Container for evaporation is arranged on and adds in hot tank, and electronic balance display weight is 10146.03g.Use protection gas that container for evaporation is emptied
After, to open display system 5 and flow value is shown, steam flow dm/dt time interval is 10s, TiCl4Flow plan controls
For 0.15g/s.Startup adds hot tank and heats container for evaporation, jet chimney, and container for evaporation adds the temperature of hot tank and is set in 160
DEG C, jet chimney adds the temperature of hot tank and is set in 160 DEG C.In evaporation process, weight change and the steam flow of container for evaporation are such as schemed
Shown in 3, in the starting stage, steam flow does not reaches setting flow, and along with the rising of evaporated material temperature, steam flow gradually increases
Add, work as TiCl4When flow is i.e. up to 0.15g/s, the temperature utilizing manually regulation container for evaporation to add hot tank carries out TiCl4Flow
Control.If steam flow is significantly lower than 0.15g/s, suitably heightens and add heater temperature, until steam flow is close to 0.15g/
s.If steam flow is apparently higher than 0.15g/s, suitably turns down and add heater temperature, until steam flow is close to 0.15g/s.Evaporation
After 60min, heat container front and back end stop valve will be added and close, and turn off heating system, cool down.Now the display weight of balance is
9787.44g, in whole evaporation process, the weightlessness of on-line weighing is 358.59g.Completely after cooling, container for evaporation is dismantled, then
Being placed on balance and weigh, gross weight is 9768.28g, TiCl in whole evaporation process4Actual weightlessness be 362.14g,
Basically identical with the weightlessness of on-line weighing, illustrate that the steam flow obtained by online weighing method is accurately.From Fig. 3
Go out, at TiCl4During the Non-follow control of steam flow, steam flow has a certain degree of fluctuation, but flowed fluctuation scope
Controlled, say and utilize this device can carry out TiCl4The control of flow.
By balance weight method, steam flow is measured, utilize regulation container for evaporation to add the temperature of hot tank to steam stream
Amount is controlled, and has good reliability, uses that temperature is high, is applicable to the metering of less steam flow, can enter steam flow
Row controls and the simple advantage of apparatus structure, is primarily adapted for use in steam flow control accuracy and automaticity less demanding,
Can quickly respond without the need for steam flow change, it is only necessary to there is flow measurement and control the place of function.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (4)
1. based on device steam flow being evaporated, measure and regulating, it is characterised in that include inner hollow adds hot tank
(1), described in add hot tank (1) be provided with container for evaporation (2), add and weighing apparatus and display system (5) be installed in hot tank (1), and
Weighing apparatus is connected with container for evaporation (2) and display system (5) simultaneously, and container for evaporation (2) connects jet chimney, jet chimney
One end and container for evaporation (2) are internal to be connected, and is provided with stop valve (3) on jet chimney, and stop valve (3) can cut off right
The jet chimney answered.
It is the most according to claim 1 based on device steam flow being evaporated, measure and regulating, it is characterised in that
Described weighing apparatus is electronic balance (6).
It is the most according to claim 1 based on device steam flow being evaporated, measure and regulating, it is characterised in that
Described jet chimney is corrugated tube (4) and metal hard tube (7), and corrugated tube (4) is internal with container for evaporation (2) to be connected, corrugated tube (4)
One end away from container for evaporation (2) connects with metal hard tube (7), and stop valve (3) is arranged on metal hard tube (7).
4. based on method steam flow being evaporated, measure and regulating, it is characterised in that after weighing, evaporated material is placed
In container for evaporation (2) and seal, being placed on by container for evaporation (2) and add in hot tank (1), weighing apparatus is arranged on and adds hot tank
(1) top, container for evaporation (2) is connected so that container for evaporation (2) is unsettled by tinsel with weighing apparatus bottom suspension hook, and evaporation is held
Device (2) is connected with metal hard tube (7) by corrugated tube (4), and the range of weighing apparatus is more than container for evaporation (2) and the weight of evaporated material
Amount summation, after using protection gas to empty container for evaporation (2), continues to be passed through protection gas as carrier band gas or by container for evaporation
(2) front end stop valve is closed, and opens display system (5), arranges reading weighing apparatus by display system (5) according to actual needs and show
Time interval dt of registration value, display system (5) can show the numerical value i.e. steam flow of dm/dt, starts and adds hot tank (1) to steaming
Send out container (2), jet chimney heats, and sets according to the character of evaporated material and adds hot tank (1) temperature, in the starting stage, steams
The plan of not reaching of steam flow amount controls flow, and along with the rising of evaporated material temperature, steam flow is gradually increased, when evaporated material
When flow is i.e. up to plan control flow, the temperature utilizing manual mode regulation to add hot tank (1) carries out the control of flow, if steaming
Steam flow amount controls flow significantly lower than plan, then heighten and add hot tank (1) temperature, until steam flow controls flow close to plan,
If steam flow controls flow apparently higher than plan, then turn down and add hot tank (1) temperature, until steam flow controls stream close to plan
Amount, after evaporation process reaches the scheduled time or evaporated material evaporates substantially, will add pass, heat container front and back end stop valve (3)
Close, turn off heating system, cool down.
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| CN201610519567.9A CN106197591B (en) | 2016-07-05 | 2016-07-05 | Based on the method for being evaporated, measuring and adjusting to steam flow |
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| CN111336084A (en) * | 2020-04-10 | 2020-06-26 | 深圳市华溶分析仪器有限公司 | Flow cell method dissolution rate instrument automatic regulation flow piston pump and control pump system thereof |
| CN112763367A (en) * | 2020-12-30 | 2021-05-07 | 西安交通大学 | Lead-bismuth steam circulating filtration and online measurement system |
| CN114046835A (en) * | 2021-09-29 | 2022-02-15 | 华能苏州热电有限责任公司 | Steam flow metering method and device based on flow integrating instrument |
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