CN106289428A - Cool down device and metering system - Google Patents
Cool down device and metering system Download PDFInfo
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- CN106289428A CN106289428A CN201510238977.1A CN201510238977A CN106289428A CN 106289428 A CN106289428 A CN 106289428A CN 201510238977 A CN201510238977 A CN 201510238977A CN 106289428 A CN106289428 A CN 106289428A
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Abstract
Disclose one to cool down device and metering system.Device of cooling down includes: the housing of the closing of general cylindrical shape；Input channel, the inside of housing is extended to from the outside of housing, the curved portions that the end being positioned at enclosure interior of input channel is shaped generally as, the fluid in input channel flows into housing is made to form whirlpool, to promote the gas in fluid to separate with liquid, and separated gas accumulates in the top of housing；Output channel, extends to the inside of housing in the bottom of input channel from the outside of housing, to discharge the liquid in the fluid in housing.Fluid containing gas enters from the top of device of cooling down, liquid in fluid is discharged from the bottom of device of cooling down, bubble in fluid has longer floating distance, and before liquid is discharged, gas floats to the enough distance of outlet from output channel, from without with liquid discharge；The liquid portion not containing gas is only measured by the mass flowmenter being arranged on output channel, thus improves measuring accuracy.
Description
Technical field
Embodiments of the invention relate to one and cool down device, include more particularly, it relates to one can eliminate
The device and include the metering system of this device of cooling down of cooling down of the gas in the fluid of liquids and gases.
Background technology
Along with industrialization degree and the raising of living standards of the people, to liquid chemical product (such as finished product
Oil, liquid chemical raw material etc.) demand increasing.In order to liquid chemical product is stored,
Various storage tank is being built based on the place at riverine, coastal harbour.In liquid chemical product trade
During Yi, need to be unloaded in storage tank the liquid chemical product utilization pipeline of Shipping, mesh
Front international trade transaction mode is to join according to ship inspection amount or tank inspection amount, deposits because it is objective
Systematic error and incidental error, create the numerous world, domestic trade handing-over dispute, international,
The acceptable error in dipping of upper acquiescence is less than 3 ‰, and the trade transaction of actual liquid chemical product measures
The error batch more than 3 ‰ just accounts for the 20%-30% of total batch of concluding the business, and causes huge to country and enterprise
Loss；And it is marked capacity, the measurement of each qualification unit, long-time complicated handshaking etc.
Spend huge expense.
The most also direct at the mass flowmenter (measuring accuracy is up to 0.5 ‰) using Gao Zhun
Measure the quality flowing through liquid, but because its precision under gas-liquid two-phase operating mode is greatly lowered, be only limitted to
Without the trade transaction under the operating mode of any gas in liquid.
Currently seek the gas using the equipment of cooling down first to remove in liquid, then through high-precision matter
The probability that amount effusion meter measures, but the equipment of cooling down researched and developed can not be completely eliminated institute in liquid
The gas contained, is especially gradually increased at gas content, and when even reaching 100%, effect of cooling down substantially reduces.
Summary of the invention
For overcoming the defect of of the prior art above-mentioned or other side, the present invention proposes one and cools down
Device and the metering system including this device of cooling down, it is possible to automatically eliminate in fluid to be batched
The all gas of 0%-100% content, thus realize the accurate metering to the fluid being mixed with gas.
Embodiment according to an aspect of the present invention, it is provided that one is cooled down device, including: round
The housing of the closing of tubular；Input channel, extends to the inside of described housing from the outside of described housing,
The curved portions that the end being positioned at described enclosure interior of described input channel is shaped generally as so that through institute
State input channel to flow into the fluid in described housing and form whirlpool, with promote gas in described fluid with
Liquid separates, and separated gas accumulates in the top of described housing；Output channel, described
The bottom of input channel extends to the inside of described housing from the outside of described housing, to discharge described shell
The internal liquid in fluid.
Device of cooling down according to an embodiment of the present invention also includes: the screen cloth of general cylindrical shape, peace
Be contained in described enclosure interior and and the inwall of described housing between there is preset distance, described screen cloth and institute
The height of the column part stating housing is roughly the same.
According to the device of cooling down of an embodiment of the present invention, described curved portions is disposed relative to described stream
The liquid level of body is downward-sloping.
According to the device of cooling down of an embodiment of the present invention, described curved portions place diameter of a circle is described
3-4 times of the internal diameter of input channel.
According to the device of cooling down of an embodiment of the present invention, between described screen cloth and housing, it is provided with liquid level
Meter, is provided with air bleeding valve at the top of described housing, and described air bleeding valve is beaten according to the measurement result of displacement meter
On or off is closed.
According to the device of cooling down of an embodiment of the present invention, described screen cloth includes:
Epimere, at described epimere, every square metre has 1500-2500 the first sieve aperture, and each first
The aperture of sieve aperture is 15-20 millimeter；
Interlude, at described interlude, every square has 3000-5000 the second sieve aperture, each
The hole of the second sieve aperture is 10-15 millimeter；And
Hypomere, at described hypomere, every square metre has 2000-4000 the 3rd sieve aperture, and each 3rd
The aperture of sieve aperture is 10-15 millimeter.
According to the device of cooling down of an embodiment of the present invention, described screen cloth includes:
Epimere, at described epimere, every square metre has 3000-5000 the first sieve aperture, and each first
The aperture of sieve aperture is 10-15 millimeter；
Interlude, at described interlude, every square has 4000-6000 the second sieve aperture, each
The hole of the second sieve aperture is 5-10 millimeter；And
Hypomere, at described hypomere, every square metre has 6000-20000 the 3rd sieve aperture, and each 3rd
The aperture of sieve aperture is 5-10 millimeter.
Embodiment according to another aspect of the present invention, it is provided that a kind of metering system, including: above-mentioned
Device of cooling down described in various embodiments；And mass flowmenter, the hull outside at device of cooling down is pacified
Cool down on the output channel of device described in being contained in, the internal diameter D of described housing2Determined by equation below:
Wherein, C1It is the first matching factor, C1Span be 1.7-1.9, η1The motion being water is viscous
Stagnant coefficient, η2It is the kinematic coefficient of viscosity of liquid component, D in fluid1For in the entrance of mass flowmenter
Footpath, Fv is the design discharge of mass flowmenter.
According to the metering system of a kind of embodiment, described first matching factor is 1.75-1.85, is preferably
1.8。
According to the metering system of a kind of embodiment, between described screen cloth and housing, it is provided with liquidometer,
The top of described housing is provided with air bleeding valve, is provided with regulation valve, described air bleeding valve on described output channel
Open with regulation valve according to the measurement result of displacement meter or close.
According to the metering system of a kind of embodiment, described housing the first height H from bottom to top1
Determined by equation below:
Wherein, C2It is the second matching factor, C2Span be 3.8-4.2, preferably 4.
Metering system according to a kind of embodiment farther includes control system, when from described output channel
Entrance to the first difference in height between the liquid level measured by described liquidometer more than the second height H2Time,
Described control system controls described regulation valve and is maintained at open mode, when described first difference in height is not more than
Second height H2Time, described control system controls described regulation valve and is maintained at closed mode,
Described second height H2Determined by equation below:
Wherein, C3It is the 3rd matching factor, C3Span be 0.8-1.2, preferably 1.
According to the metering system of a kind of embodiment, when the liquid level measured from described liquidometer is to described housing
Top between the second difference in height less than or equal to third height H3Time, described control system controls
Described air bleeding valve is maintained at closed mode,
Described third height H3Determined by equation below:
Wherein, C4It is the 4th matching factor, C4Span be 1.5-2.1, preferably 1.8.
According to the metering system of a kind of embodiment, mass flow is calculated as coriolis flowmeter.
According to the metering system of a kind of embodiment, it is provided with evacuated tube, described row in the bottom of described housing
Exhaust-valve is installed on blank pipe.
According to the metering system of a kind of embodiment, described liquidometer include with liquid level rise or decline
Ball float, is provided with the first corresponding with the second height and third height respectively stroke on the housing and opens
Closing and the second travel switch, described ball float triggers cutting of regulation valve with coordinating of described first travel switch
Changing, described ball float coordinates triggering exhaust valve closure with described second travel switch.
According to the metering system of a kind of embodiment, the liquid in described fluid is product oil or liquid chemical
Raw material.
Cool down device and the metering system of the above-mentioned various embodiments according to the present invention, containing the stream of gas
Body enters from the top of device of cooling down, and the liquid in fluid is discharged from the bottom of device of cooling down, in fluid
Bubble have longer floating distance, before liquid is discharged, gas floats to go out stomatopod from output channel
Enough distances, from without discharging with liquid；So, the mass flowmenter being arranged on output channel
Only the liquid portion not containing gas is measured, thus improve measuring accuracy.
Accompanying drawing explanation
Understandable in order to make the purpose of the present invention, feature and advantage to become apparent from, below in conjunction with the accompanying drawings and
The invention will be further described for specific embodiment, wherein:
Fig. 1 is the principle schematic of the metering system of a kind of exemplary embodiment according to the present invention；
Fig. 2 is the detailed maps of the metering system of a kind of exemplary embodiment according to the present invention；
Fig. 3 is the principle schematic of the device of cooling down of a kind of exemplary embodiment according to the present invention；With
And
Fig. 4 is that the principle of the pilot system of the metering effect of the metering system of the checking embodiment of the present invention is shown
It is intended to.
Detailed description of the invention
Although with reference to the accompanying drawing containing presently preferred embodiments of the present invention, the present invention will be fully described, but at this
Should be appreciated that before description that those of ordinary skill in the art can revise invention described herein, simultaneously
Obtain the technique effect of the present invention.Thus, it should be understood that above describes the ordinary skill people to this area
It is one to disclose widely for Yuan, and its content does not lies in and limits exemplary enforcement described in the invention
Example.
It addition, in the following detailed description, for ease of explaining, elaborate many concrete details with
Comprehensive understanding to present disclosure embodiment is provided.It should be apparent, however, that one or more embodiments are not having
Can also be carried out in the case of these details.In other cases, known structure and dress
Put and diagrammatically embody to simplify accompanying drawing.
See Fig. 1-3, according to a kind of exemplary embodiment of the present invention, it is provided that a kind of metering system 8,
Including: based on the liquid cooled down in device 3 and convection cell by eliminating the gas componant in fluid is carried out
The mass flowmenter 6 of amount.The general cylindrical shape that device 3 of cooling down includes such as being made up of stainless steel material
Housing 31, input channel 24 and the output channel 25 closed.Input channel 24 prolongs from the outside of housing 31
Reach the inside of housing 31, input channel 24 be positioned at the arc that the end within housing 31 is shaped generally as
Shape portion 241 so that the fluid in input channel 24 flows into housing 31 is driven and forms whirlpool,
To promote the gas in fluid to separate with liquid, and separated gas accumulates in the upper of housing 31
Portion, and liquid portion remains in the bottom of housing 31.Output channel 25 in the bottom of input channel 24 from
The outside of housing 31 extends to the inside of housing 31, to discharge the liquid in the fluid in housing 31.Matter
Amount effusion meter 6 is arranged on the output channel 24 of device 3 of cooling down in the outside of the housing 31 of device 3 of cooling down
On, the internal diameter D of housing 312Determined by equation below (1):
Wherein, C1It is the first matching factor, C1Span be 1.7-1.9, η1It is water at a temperature of certain
Kinematic coefficient of viscosity, η2It is the kinematic coefficient of viscosity of liquid component, D in synthermal lower fluid1For matter
The internal diameter of the entrance of amount effusion meter 6, Fv is design discharge or the metered flow of mass flowmenter 6.?
In a kind of exemplary embodiment, the first matching factor is 1.75-1.85, preferably 1.8.
Metering system 8 according to embodiments of the present invention is suitable for application in be mixed with bubble from boats and ships 2
The product oil of 21 or liquid chemical feedstock transportation are in the induction system of storage tank 9, and realize defeated
The product oil or the liquid chemical raw material that send accurately measure.In the case, in fluid, liquid 5 is
Liquid chemical product, comprises product oil or liquid chemical raw material.
In the metering system 8 of the embodiment of the present invention, device 3 of cooling down coordinates with mass flowmenter 6,
Device 3 of cooling down will come from outside (such as boats and ships) containing gas and the fluid of two kinds of compositions of liquid
In gas eliminate.Due to the content of gas componant that comprises in fluid in different environments (such as
Degree etc. of jolting in actual liquid level in temperature, boats and ships, vessel motion distance, transportation) can
Can be different, but pipe fluid does not comprises how many gas componants, can be eliminated by device of cooling down, quality
Liquid component in effusion meter convection cell measures, such that it is able to improve being actually needed metering
The measuring accuracy of liquid component.Further, from formula (1), due to the shell of device 3 of cooling down
The internal diameter of body and the kinematic coefficient of viscosity η of water1, the kinematic coefficient of viscosity η of liquid component in fluid2、
The internal diameter D of the entrance of mass flowmenter 61, and design discharge Fv of mass flowmenter 6 relevant.Especially
It is at the first matching factor C1In the case of being about 1.8, it can be ensured that form whirlpool in housing 31
It is discharged to housing upper will be located in the gas in the fluid of housing 31 bottom, thus realizes eliminating gas
Purpose, can make again fluid in input channel 24, cool down device 3 and output channel 25 continuously
Flowing, it is ensured that the product oil on unloading boats and ships 2 or liquid chemical raw material the most rapidly.
It addition, in device of cooling down, fluid enters from top, liquid is discharged from bottom, input channel
The position of the outlet of the curved portions 241 of 24 is higher than entrance 251 position of output channel 25, it is ensured that stream
Bubble in body has longer floating distance, floats to the entrance from output channel 25 before liquid is discharged
251 have enough distances, and gas will not be discharged with liquid.It addition, housing 31 includes cylindrical portion
Divide and be positioned at the circular arc shaped portion at the upper and lower two ends of cylindrical part；Input channel 24 in housing 3
The position of outlet is positioned at the region of the height more than 1/3 of housing 31；Output channel 25 in housing 31
Export the region of bottom that 251 positions are located substantially at the cylindrical part of housing.
Device of cooling down according to embodiments of the present invention also includes the screen cloth 20 of general cylindrical shape, and screen cloth 20 is pacified
Be contained in housing 31 internal and and the inwall of housing 31 between there is preset distance, screen cloth 20 and housing 31
The height of column part is roughly the same.The outlet of the curved portions 241 of input channel 24 and output channel 25
Entrance 251 to be all located at screen cloth 20 internal.Multiple a diameter of 5 millimeters it are uniformly distributed on tubular screen cloth 20
The round sieve 201 of-20 millimeters.By arranging screen cloth 20, fluid is anti-due to swirl flow at housing 31
Resurgent crosses the sieve aperture 201 on screen cloth 20, and air filtration face can be made to expand further, improves and filters gas
Effect.
In one embodiment, screen cloth 20 includes: its height is about about three points of screen cloth height
One of epimere, at epimere, every square metre has 1500-2500 the first sieve aperture, each first sieve
The aperture in hole is 15-20 millimeter；Its height is about the interlude of about 1/3rd of screen cloth height,
At described interlude, every square has 3000-5000 the second sieve aperture, the hole of each second sieve aperture
For 10-15 millimeter；And the hypomere of about 1/3rd of its height about screen cloth height, in institute
Stating hypomere, every square metre has 2000-4000 the 3rd sieve aperture, and the aperture of each 3rd sieve aperture is
10-15 millimeter.In this manner it is ensured that the transmitance of every square metre is maintained at 60%-80%.
In a kind of alternate embodiment, screen cloth 20 includes: its height is about screen cloth height
The epimere of about 1/3rd, at described epimere, every square metre has 3000-5000 the first sieve aperture,
The aperture of each first sieve aperture is 10-15 millimeter；About the three of its height about screen cloth height/
The interlude of one, at described interlude, every square has 4000-6000 the second sieve aperture, each
The hole of the second sieve aperture is 5-10 millimeter；And its height is about about 1/3rd of screen cloth height
Hypomere, at described hypomere, every square metre has 6000-20000 the 3rd sieve aperture, each 3rd
The aperture of sieve aperture is 5-10 millimeter.In this manner it is ensured that the transmitance of every square metre is maintained at
60%-80%.
In the further embodiment cooling down device, curved portions 241 is disposed relative to the liquid level of fluid
Downward-sloping.Due to the annular of curved portions 241 and the downward-sloping structure of input channel 24, defeated
Entering the pressure that adds of pump (not shown), fluid in housing 31 forms whirlpool descending, and bubble borrows buoyancy
Up, the effect filtering gas can be improved.It addition, the descending fluid of whirlpool passes repeatedly through tubular
Screen cloth 20, filters repeatedly to bubble, can improve the effect filtering gas further.
In one embodiment, curved portions 241 place diameter of a circle is the 3-4 of internal diameter of input channel 24
Times.So, fluid rotates descending after entering housing 31, and after liquid level rises, fluid is at housing 31
Interior stroke lengthens, and the number of turns of rotation can get more and more, and the bubble in fluid has longer floating interval of floating dock,
The entrance 251 floating to separate out output channel 25 before liquid portion is discharged has the most remote distance,
Without entering in output channel 25 with liquid, thus improve the pure of the liquid in output channel 25
Degree.
In one embodiment, between screen cloth 20 and housing 31, it is provided with liquidometer 17, on the top of housing
Portion is provided with air bleeding valve 19, is provided with regulation valve 23, air bleeding valve 19 and 25, valve of regulation on output channel 25
Open according to the measurement result of displacement meter 17 or close.
In the metering system 8 of the embodiment of the present invention, as it is shown on figure 3, housing 31 is from bottom to top
First height H1Determined by equation below:
Wherein, C2It is the second matching factor, C2Span be 3.8-4.2, preferably 4.Can manage
Solve, the first height H1Height for housing 31 inner housing space.It is determined by the internal height of housing 31
With internal diameter D2, can substantially determine the volume of housing 31, further ensure that formation whirlpool in housing 31
Whirlpool, to eliminate gas, can make again fluid at input channel 24, cool down in device 3 and output channel 25
Flow continuously, it is ensured that the product oil on unloading boats and ships 2 or liquid chemical raw material the most rapidly.
The metering system 8 of a kind of embodiment of the present invention farther includes control system (not shown),
When the first difference in height from the entrance 251 of output channel 25 to the liquid level measured by liquidometer 15 is big
In the second height H2Time, the regulation valve 23 that control system controls to be arranged on output channel 25 is maintained to be beaten
Open state, makes liquid be transported to storage tank 9 through output channel 25；When described difference in height is not more than second
Highly H2Time, described control system control and regulation valve is maintained at closed mode, to ensure gas or to be mixed with
The liquid of gas will not be discharged from entrance 251；
Described second height H2Determined by equation below:
Wherein, C3It is the 3rd matching factor, C3Span be 0.8-1.2, preferably 1.So,
Liquid level in housing 31 can be maintained above the second height H2, it is ensured that fluid row in housing 31
Cheng Jiachang, gas will not enter in output channel 25 with liquid；Fluid can be made again at input channel
24, cool down and device 3 and output channel 25 flow continuously.
In a further embodiment, when the liquid level measured from liquidometer 15 to the top of housing 31
The second difference in height less than or equal to third height H3Time, described control system controls air bleeding valve 19 and protects
Hold in off position,
Described third height H3Determined by equation below:
Wherein, C4It is the 4th matching factor, C4Span be 1.5-2.1, preferably 1.8.
The second difference in height when the liquid level measured from liquidometer 15 to the top of housing 31 less than or
Person is equal to third height H3Time, described control system controls air bleeding valve 19 and is switched to closed mode, thus
Liquid is avoided to discharge from discharge duct 13.Owing to air bleeding valve 19 is closed, the gas that housing 31 top is built up
Gradually increasing, gas pressure increases, and liquid level declines, when liquid level drops to corresponding to the second height H2's
Time highly, while closing regulation valve 23, open air bleeding valve 19, accumulate in liquid level top to discharge
Gas, make gas pressure reduce, the liquid level of fluid rises.
In a kind of exemplary embodiment, mass flowmenter 6 is Coriolis (Coriolis) quality stream
Gauge.For example, it is possible to select the height quasi-quality stream that the Ai Mosheng process control company limited of the U.S. produces
Gauge, its precision is 1 ‰.
In a kind of exemplary embodiment, it is provided with evacuated tube 14, described evacuated tube in the bottom of housing 31
Exhaust-valve 141 is installed on 14, remains in the liquid in housing 31 with emptying.Various in the present invention
In embodiment, exhaust-valve 141, air bleeding valve 19 and regulation valve 23 can be electrodynamic valves.
In a kind of exemplary embodiment, liquidometer 15 includes the ball float rising with liquid level or declining
17, housing 31 is provided with respectively with second height H2With third height H3The first corresponding stroke is opened
Pass 18 and the second travel switch 16, ball float 17 triggers regulation valve 23 with coordinating of the first travel switch 18
Switching, ball float 17 is closed with the triggering air bleeding valve 19 that coordinates of the second travel switch 16.Liquidometer 15 is permissible
It is made up of the stainless steel tube of a diameter of 10mm-20mm, the five of the internal whole height of its length/
Four, ball float 17 is arranged on steel pipe.
Although in the above embodiments, determining the relevant of metering system with certain kinematic coefficient of viscosity
The parameter of parts, but the invention is not limited in this, the metering system of the embodiment of the present invention is for motion
The coefficient of viscosity is all suitable for less than any liquid medium of this kinematic coefficient of viscosity, such as, select at 20 DEG C
Water is transmission medium, its coefficient of viscosity 1.0050, determines that the parameter of the associated components of metering system is made according to this
The metering system become, is less than for kinematic coefficient of viscosity at a temperature of metering system actual condition place
1.0050 any liquid medium be all suitable for.
With reference to above empirical equation (1)-(4), it is possible to by the specification of mass flowmenter, dress of cooling down
The structure put, the design discharge of metering system, the medium of selected metering are effectively matched, and produce
Effectively, be suitable for metering system, precision is up to 1 ‰.
Describe referring to Fig. 1-3 utilize the present invention cool down device and metering system transmits and measures example
Work process such as the medium of product oil etc.
First, it is connected to be mounted with finished product by the input channel 24 of the metering system 8 of the embodiment of the present invention
The boats and ships 2 of oil (liquid), are connected to storage tank 9, now, regulation valve 23 and row by output channel 25
Air valve 19 is held at closed mode.It addition, be provided with for withdrawn fluid on input channel 24
The pump housing 10 and hand-operated valve 12, be provided with hand-operated valve 11 on output channel 25, at boats and ships 2 and storage tank 9
On be additionally provided with the liquidometer 1 for measuring liquid level.
Under the driving of the pump housing 10, the fluid 22 containing bubble 21 flows into through input channel 24 from boats and ships 2
Cooling down device 3, fluid enters from the top of housing 31 from input channel 24, the fluid in housing 31
Liquid level rises, and the fluid flowed out from input channel 24 rotates and descending in housing 31, and liquid level gradually goes up
Rising, bubble borrows buoyancy up, and bubble is filtered by tubular air filtration screen cloth 20 repeatedly, makes gas gather
Amass on housing 31 top.
In the liquid level uphill process of fluid, when liquid level rises to corresponding to the second height H2(regulation valve
Triggering face) height time, ball float 17 coordinates with the first travel switch 18, control system (not shown)
Control and regulation valve 23 is switched to open mode from closed mode, does not contains gas to discharge from output channel 25
The liquid of body, liquid 5 enters storage after mass flowmenter 6 metering through being arranged on output channel 25
Tank 9, meanwhile, controls air bleeding valve 19 and is maintained at closed mode.Afterwards, metering system enters normal
Conveyance fluid and normal metering state.
In normal transportation process, along with fluid continuously flows into device 8 of cooling down, gas constantly accumulates in
The top of the housing 31 closed, the pressure on housing 31 top increases, causes the liquid level in housing 31 to decline,
When ball float drops to corresponding to the second height H2During the height of (regulation valve trigger face), ball float 17 and the
One stroke switch 18 cooperation, control system controls electronic regulation valve 23 and is switched to close from open mode
State, to avoid gas to enter output channel 25, meanwhile, control system also controls air bleeding valve 19 and opens,
To discharge the gas accumulating in liquid level top, the pressure of gas in reduction housing 31, in the liquid level of fluid
Rise.In the case, if liquid level continues to rise corresponding to third height H3(air bleeding valve triggering face)
Height time, described ball float 17 coordinates with the second travel switch 16, control system control air bleeding valve 19 close
Close, to prevent liquid entry into exhaustor 13.When air bleeding valve 19 remains turned-off, along with fluid
Continuously flowing into device 8 of cooling down, gas constantly accumulates in the top of the housing 31 of closing, housing 31 top
Pressure increase, cause the liquid level in housing 31 to decline, when ball float drops to corresponding to the second highly H2
During the height in (outlet electric valve triggering face), ball float 17 coordinates with the first travel switch 18, controls system
System controls electronic regulation valve 23 and is switched to closed mode from open mode and controls air bleeding valve 19 and open.
So, the liquid level of fluid is constrained between the first travel switch 18 and the second travel switch 16 constantly
Float, thus realize eliminating the purpose of gas, fluid can be made again at input channel 24, device of cooling down
3 and output channel 25 in flow continuously, it is ensured that the continuously product oil on unloading boats and ships 2 the most rapidly.
It will be understood to those skilled in the art that cool down device and the metering system utilizing the embodiment of the present invention
System, it is possible to automatically eliminate the need for all gas in the fluid of metering, then measured not by mass flow
The mass flow of the liquid component containing gas, mass accumulation amount, density, volume flow, volume are tired
The various variable such as accumulated amount.The metering system of the embodiment of the present invention can be configured to integrated automatic gauge
System, including device of cooling down, mass flowmenter, wherein, sensor that mass flowmenter includes being correlated with,
Core processor and transmitter etc..
In order to verify actual performance and the measuring accuracy of the checking system of the metering system of embodiment, assemble
Become the pilot system shown in Fig. 4.This pilot system includes: described in the above-mentioned various embodiments of the present invention
First tank 4 of the fluid communication of the input channel 24 of metering system 8 and metering system and meter
Second tank 7 of the fluid communication of the output channel 25 of amount system, it is arranged on input channel
Mass flowmenter 27, the pump housing 10 being arranged on output channel 25 and for display quality effusion meter
27 and the computer 28 of measurement result of mass flowmenter 8 of metering system.In this pilot system,
Boats and ships and storage tank is distinguished with the first tank 4 and the second tank 7 that can weigh weight, and at input pipe
Mass flowmenter 6 with metering system 8 is installed on road 24 there is the mass flowmenter 27 of same model.Should
USB interface, 485 communication terminals on the transmitter of quality of connection effusion meter 6 and 27 are turned by 485 PORT COM
Mouth and the USB interface of computer 28.So, by 485 communication modes, apply Prolink program,
Computer 28 and mass flowmenter 6 and 27 are carried out real-time communication, by setpoint frequency by computer 28 certainly
Dynamic the surveyed parameters of recording quality effusion meter, it is simple to parameters is comprehensively analyzed, intuitively
Judge the performance of metering system 8.It addition, set mass flow unit as kg/hour or ton hour.
Example 1:
For D1The mass flowmenter 6 and 27 of=50 millimeters (bore is 50 millimeters), pilot system
Design discharge FVBeing 50 cubes ms/h, test medium is water.Cool down the circle of housing of device 3
The internal diameter D of cylinder2It is 0.5 meter, internal distance H from the top to the bottom of the housing 3 of device of cooling down1
It it is 1.68 meters；It is positioned at least significant end distance first stroke of the entrance 251 of the output channel 25 of housing
The first difference in height (i.e. H between the height of switch2) it is 0.56 meter；Top in housing 3 is (i.e.
The entrance of exhaustor 13) distance the second travel switch height between the second difference in height (i.e. H3)
It it is 0.31 meter.
Utilize the pump housing to be extracted out by the water in the first tank 4, enter metering system 8 through mass flowmenter 27,
Flow into the second tank 7 again.Two water are measured with the weighing-appliance (such as weighbridge) that precision is 0.05 grade
The mass change of water in groove, the ship inspection in similar actual liquid chemical Products Trade handing-over and housing inspection,
But precision can reach 0.1 grade.By the mass accumulation amount that mass flowmenter 6 and 27 is measured is compared
Right, to weigh the precision of metering system.During drawing water, can repeatedly raise the first tank 4
The import of middle input channel 24 makes it be moved partly from the water surface, so that air sucks input with water
Pipeline.Liquid level at the first tank 4 declines and during close to bottom, also has a large amount of gas and enters input
Pipeline 24, in water, the instantaneous content of air is 0% to 100%.Similarly, from boats and ships 2 to depositing
During storage tank 9 carries product oil, air also can enter in input channel with liquid product oil,
Especially drop to bottom at each cabin liquid level, when entering the receipts storehouse stage, have a large amount of gas even
100% gas pumped enter in pipeline, this is also because gas-liquid two-phase affects matter during existing trade transaction
The reason of the measuring accuracy of amount effusion meter.Processed by the metering system of the embodiment of the present invention, it is possible to disappear
Except the gas of the content 0% to 100% carried in fluid, needed for reaching mass flowmenter accurate measurement
Operating mode.When the water in the first tank 4 is close to after exhausting, input channel can be placed into the second tank
7, output channel 25 is placed the first tank 4, to proceed test.The most repeatedly, class
Like the boats and ships many storehouses delivery in storage tank releases, repeatedly receive the process in storehouse.
After having drawn water, open for the first tank and two weighing-appliances of the second tank every time
Display, output channel 25 and input channel 24 are withdrawn corresponding tank, record two tanks
The weight of water in 4.Above process of the test is constantly repeated several times, terminates whole test to any time
Journey, the increments calculating each tank is the amount every time discharging water, more all addition is all
Discharge the weighing cumulant of water.Meanwhile, mass flowmenter 6 and the quality of computer 28 display are read
The cumulant of effusion meter 27.
Result of the test is as shown in table 1 below for the first time:
Table 1
Result of the test is as shown in table 2 below for the second time:
Table 2
Result of the test is as shown in table 3 below for the third time:
Table 3
By 3 test explanations, in the case of the water containing gas processes without metering system 8, quality
The Cumulation quantity error rate that effusion meter 27 is measured is relatively big, contained gases affect mass flowmenter in water
Certainty of measurement.With effusion meter quality 27 relative to compared with the error rate of weighing-appliance, effusion meter quality 6
Being decreased obviously relative to the error rate of weighing-appliance, its error rate all drops to writes from memory the most in the world
Recognizing acceptable error rate 0.3%, precision is up to 1 ‰.
Example 2:
For D1The mass flowmenter 6 and 27 of=100 (bore is 100 millimeters), pilot system
Design discharge FVIt is 250 cubes ms/h；Cool down the cylindrical internal diameter D of housing of device 32For
1.26 rice；Cool down internal distance H from the top to the bottom of housing 3 of device1It it is 2.66 meters；It is positioned at
Between the height of least significant end distance first travel switch of the entrance 251 of the output channel 25 in housing
The first difference in height (i.e. H2) it is 0.45 meter；Top (i.e. the entrance of exhaustor 13) in housing 3
The second difference in height (i.e. H between the height of distance the second travel switch3) it is 0.25 meter.
Example 3
For D1The mass flowmenter of=150 (bore is 150 millimeters), the design stream of pilot system
Amount FVIt is 500 cubes ms/h；Cool down the cylindrical internal diameter D of housing of device 32It is 1.69
Rice；Cool down internal distance H from the top to the bottom of housing 3 of device1It it is 3.14 meters；It is positioned at housing
In output channel 25 entrance 251 least significant end distance the first travel switch height between the
One difference in height (i.e. H2) it is 0.5 meter；Top (i.e. the entrance of exhaustor 13) in housing 3 away from
The second difference in height (i.e. H between the height of the second travel switch3) it is 0.28 meter.
The embodiment of adnexa further aspect of the present invention, it is provided that one is cooled down device 3, including such as by
The housing 31 of the closing of the general cylindrical shape that stainless steel material is made, input channel 24 and output channel
25.Input channel 24 extends to the inside of housing 31, being positioned at of input channel 24 from the outside of housing 31
The curved portions 241 that end within housing 31 is shaped generally as so that flow into housing through input channel 24
Fluid in 31 is driven and forms whirlpool, to promote the gas in fluid to separate with liquid, and
Separated gas accumulates in the top of housing 31, and liquid portion remains in the bottom of housing 31.Defeated
Go out pipeline 25 and extend to the inside of housing 31 in the bottom of input channel 24 from the outside of housing 31, with row
Go out the liquid in the fluid in housing 31.
At cool down device and metering system according to embodiments of the present invention, it is possible to measure instantaneous quality
Flow, from the mass accumulation amount starting the random time section being metered into terminal procedure, precision up to
1‰.Metering system based on the present invention, can establish a kind of new product oil trade transaction scheme, i.e.
The mass accumulation amount of the liquid measured with the metering system of the embodiment of the present invention is for according to carrying on trade friendship
Connect, can so that liquid petroleum chemicals trade transaction mode present in quantitative dispute is greatly reduced,
Avoid the enormous expenditure spent due to commodity inspection, capacity demarcation etc., shorten the time of each trade transaction,
Improve the efficiency of operation of petrochemical logistics industry.
It will be understood to those skilled in the art that embodiment described above is all exemplary, and
And those skilled in the art can make improvements, the structure described in various embodiments is not
Independent assortment can be carried out in the case of conflict in terms of recurring structure or principle, thus solving this
On the basis of the technical problem of invention, it is achieved more kinds of cooling systems for nuclear power plant containment shell and cold
But method.
After describing presently preferred embodiments of the present invention in detail, those of ordinary skill in the art can be clear
Understanding, at the protection domain without departing from appended claims can carry out various change and change under spirit
Become, and the present invention is also not only restricted to the embodiment of examples cited embodiment in description.It should be noted that
Word " includes " being not excluded for other element or step, and word "a" or "an" is not excluded for multiple.
It addition, the scope that any element numbers of claim should not be construed as limiting the invention.
Claims (15)
1. a device of cooling down (3), including:
The housing (31) of the closing of general cylindrical shape；
Input channel (24), the inside of described housing is extended to from the outside of described housing, the curved portions (241) that the end being positioned at described enclosure interior of described input channel is shaped generally as, the fluid in described input channel flows into described housing is made to form whirlpool, to promote the gas in described fluid to separate with liquid, and separated gas accumulates in the top of described housing；
Output channel (25), extends to the inside of described housing in the bottom of described input channel from the outside of described housing, to discharge the liquid in the fluid in described housing.
Cool down the most as claimed in claim 1 device, also include:
The screen cloth of general cylindrical shape, be arranged on described enclosure interior and and the inwall of described housing between there is preset distance, described screen cloth is roughly the same with the height of the column part of described housing.
Cooling down the most as claimed in claim 1 or 2 device, wherein, the liquid level that described curved portions is disposed relative to described fluid is downward-sloping.
Cooling down the most as claimed in claim 1 or 2 device, wherein, described curved portions place diameter of a circle is 3-4 times of the internal diameter of described input channel.
Cooling down the most as claimed in claim 2 device, wherein, described screen cloth includes:
Epimere, at described epimere, every square metre has 1500-2500 the first sieve aperture, and the aperture of each first sieve aperture is 15-20 millimeter；
Interlude, at described interlude, every square has 3000-5000 the second sieve aperture, and the hole of each second sieve aperture is 10-15 millimeter；And
Hypomere, at described hypomere, every square metre has 2000-4000 the 3rd sieve aperture, and the aperture of each 3rd sieve aperture is 10-15 millimeter；
Or, described screen cloth includes:
Epimere, at described epimere, every square metre has 3000-5000 the first sieve aperture, and the aperture of each first sieve aperture is 10-15 millimeter；
Interlude, at described interlude, every square has 4000-6000 the second sieve aperture, and the hole of each second sieve aperture is 5-10 millimeter；And
Hypomere, at described hypomere, every square metre has 6000-20000 the 3rd sieve aperture, and the aperture of each 3rd sieve aperture is 5-10 millimeter.
Cooling down the most as claimed in claim 2 device, wherein, be provided with liquidometer (17) between described screen cloth and housing, be provided with air bleeding valve (19) at the top of described housing, described air bleeding valve is opened according to the measurement result of displacement meter or is closed.
7. a metering system, including:
Device of cooling down as described in any one in claim 1-5；And
Mass flowmenter, be arranged in the hull outside of device of cooling down described in cool down device output channel on, the internal diameter D of described housing2Determined by equation below:
Wherein, C1It is the first matching factor, C1Span be 1.7-1.9, η1It is the kinematic coefficient of viscosity of water, η2It is the kinematic coefficient of viscosity of liquid component, D in fluid1For the inlet inside diameter of mass flowmenter, Fv is the design discharge of mass flowmenter.
8. metering system as claimed in claim 7, wherein, described first matching factor is 1.75-1.85, preferably 1.8.
9. metering system as claimed in claim 7, wherein, liquidometer (17) it is provided with between described screen cloth and housing, air bleeding valve (19) it is provided with at the top of described housing, described output channel is provided with regulation valve (23), described air bleeding valve and regulation valve open according to the measurement result of displacement meter or close.
10. metering system as claimed in claim 9, wherein, described housing the first height H from bottom to top1Determined by equation below:
Wherein, C2It is the second matching factor, C2Span be 3.8-4.2, preferably 4.
11. metering systems as described in claim 9 or 10, wherein, farther include control system, when the first difference in height from the entrance of described output channel to the liquid level measured by described liquidometer is more than the second height H2Time, described control system controls described regulation valve and is maintained at open mode, when described first difference in height is not more than the second height H2Time, described control system controls described regulation valve and is maintained at closed mode,
Described second height H2 is determined by equation below:
Wherein, C3It is the 3rd matching factor, C3Span be 0.8-1.2, preferably 1.
12. metering systems as claimed in claim 11, wherein, the second difference in height when the liquid level measured from described liquidometer to the top of described housing is less than or equal to third height H3Time, described control system controls described air bleeding valve and is maintained at closed mode,
Described third height H3Determined by equation below:
Wherein, C4It is the 4th matching factor, C4Span be 1.5-2.1, preferably 1.8.
13. metering systems as described in any one in claim 7-12, wherein, mass flow is calculated as coriolis flowmeter.
14. metering systems as described in any one in claim 7-12, wherein, are provided with evacuated tube, described evacuated tube are provided with exhaust-valve (141) in the bottom of described housing.
15. metering systems as claimed in claim 12, wherein, described liquidometer includes the ball float (17) rising with liquid level or declining, and is provided with the first corresponding with the second height and third height respectively travel switch and the second travel switch on the housing
Described ball float regulates the switching of valve with the triggering that coordinates of described first travel switch, and described ball float coordinates triggering exhaust valve closure with described second travel switch.
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| CN106289428B (en) | 2018-03-27 |
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Effective date of registration: 20190724 Address after: 225800 No. 66 Zhaishan Road, Baoying County Development Zone, Yangzhou City, Jiangsu Province Patentee after: Yangzhou Pipe Fittings Factory Co.,Ltd. Address before: 130012 School of Electronic Science and engineering, Jilin University, Changchun, Jilin, China, Patentee before: Jilin University |
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