CN204881741U - Device and measurement system cool down - Google Patents
Device and measurement system cool down Download PDFInfo
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- CN204881741U CN204881741U CN201520303250.2U CN201520303250U CN204881741U CN 204881741 U CN204881741 U CN 204881741U CN 201520303250 U CN201520303250 U CN 201520303250U CN 204881741 U CN204881741 U CN 204881741U
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Abstract
The utility model discloses a device and measurement system cool down. The device of cooling down includes: the confined casing of cylinder roughly, input pipeline, the outside of following the casing extend to the inside terminal arc portion that is roughly that forms of casing that lies in of the inside of casing, input pipeline for the fluid that warp input pipeline flowed into in the casing forms the swirl, and in order to impel gas and the liquid separation in the fluid, the upper portion at the casing is built up to the gas that has separated in addition, output pipeline extends to the inside of casing from the outside of casing in the lower part of input pipeline to liquid in the fluid in the discharge casing. Containing gaseous fluid and getting into from the upper portion of the device of cooling down, the liquid in the fluid is discharged from the lower part of the device of cooling down, and the bubble in the fluid has longer come -up distance, and gas floats to the sufficient distance of the export from output pipeline before liquid is discharged to can not discharge along with liquid, the mass flow meter who installs on output pipeline only measures not containing gaseous liquid part to measuring accuracy has been improved.
Description
Technical field
Embodiment of the present utility model relates to one and to cool down device, particularly, relates to a kind of device and comprise the metering system of this device of cooling down of cooling down can eliminating the gas comprised in the fluid of liquids and gases.
Background technology
Along with the raising of industrialization degree and living standards of the people, the demand of liquid towards chemical products (as product oil, liquid chemical raw material etc.) is increasing.In order to liquid towards chemical products store, building various storage tank based on the place at riverine, coastal harbour.In liquid chemical Products Trade process, the liquid chemical product utilization pipeline of Shipping is needed to be unloaded in storage tank, trade transaction mode international at present joins according to ship inspection amount or tank inspection amount, because of systematic error and the accidental error of its outwardness, create numerous worlds, home trade handing-over dispute, the acceptable error in dipping of international, upper acquiescence is lower than 3 ‰, and the 20%-30% that batch just account for total transaction batch of the trade transaction error in dipping of actual liquid chemical product more than 3 ‰, cause huge loss to country and enterprise; And be the measurement of marked capacity, each qualification unit, the expense that the costs such as long-time complicated handshaking are huge.
Also the mass flowmeter (measuring accuracy can reach 0.5 ‰) of Gao Zhun is being used directly to measure the quality flowing through liquid both at home and abroad at present, but because its precision under gas-liquid two-phase operating mode significantly reduces, be only limitted in liquid not containing the trade transaction under the operating mode of any gas.
Seeking at present to use the equipment of cooling down first to remove gas in liquid, again through possibility that high-precision mass flowmeter measures, but the equipment of cooling down researched and developed can not eliminate gas contained in liquid completely, especially increase gradually at gas content, when even reaching 100%, successful of cooling down reduces.
Utility model content
For overcoming the defect of above-mentioned or other side of the prior art, the utility model proposes a kind of device and metering system comprising this device of cooling down of cooling down, automatically can eliminate all gas of the 0%-100% content in fluid to be batched, thus realize the accurate-metering to the fluid being mixed with gas.
According to the embodiment of an aspect of the present utility model, provide one to cool down device, comprising: the housing closed of general cylindrical shape; Input channel, the inside of described housing is extended to from the outside of described housing, the end being positioned at described enclosure interior of described input channel is formed as curved portions roughly, the fluid flowed in described housing through described input channel is made to form whirlpool, to impel gas in described fluid and fluid separation applications, and the gas be separated accumulates in the top of described housing; Output channel, 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.
Device of cooling down according to a kind of embodiment of the utility model also comprises: the screen cloth of general cylindrical shape, and be arranged on described enclosure interior and also and between the inwall of described housing have preset distance, described screen cloth is roughly the same with the height of the column part of described housing.
According to the device of cooling down of a kind of embodiment of the utility model, described curved portions is arranged to downward-sloping relative to the liquid level of described fluid.
According to the device of cooling down of a kind of embodiment of the utility model, described curved portions place diameter of a circle is 3-4 times of the internal diameter of described input channel.
According to the device of cooling down of a kind of embodiment of the utility model, between described screen cloth and housing, be provided with liquid level gauge, be provided with vent valve at the top of described housing, described vent valve is opened according to the measurement result of displacement meter or is closed.
According to the device of cooling down of a kind of embodiment of the utility model, described screen cloth comprises:
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.
According to the device of cooling down of a kind of embodiment of the utility model, described screen cloth comprises:
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.
According to the embodiment of another aspect of the present utility model, a kind of metering system is provided, comprises: the device of cooling down described in above-mentioned various embodiment; And mass flowmeter, cool down on the output channel of device described in being arranged in the outside of device of cooling down, the internal diameter D of described housing
2determined by following formula:
Wherein, C
1be the first matching factor, C
1span be 1.7-1.9, η
1the kinematic coefficient of viscosity of water, η
2the kinematic coefficient of viscosity of liquid component in fluid, D
1for the inlet inside diameter of mass flowmeter, Fv is the design discharge of mass flowmeter.
According to a kind of metering system of embodiment, described first matching factor is 1.75-1.85, is preferably 1.8.
According to a kind of metering system of embodiment, liquid level gauge is provided with between described screen cloth and housing, be provided with vent valve at the top of described housing, described output channel is provided with variable valve, described vent valve and variable valve are opened according to the measurement result of displacement meter or are closed.
According to a kind of metering system of embodiment, described housing the first height H from bottom to top
1determined by following formula:
Wherein, C
2be the second matching factor, C
2span be 3.8-4.2, be preferably 4.
Metering system according to a kind of embodiment comprises control system further, and the first difference in height when from the entrance of described output channel to the liquid level measured by described liquid level gauge is greater than the second height H
2time, described control system controls described variable valve and remains on open mode, when described first difference in height is not more than the second height H
2time, described control system controls described variable valve and remains on closed condition,
Described second height H
2determined by following formula:
Wherein, C
3be the 3rd matching factor, C
3span be 0.8-1.2, be preferably 1.
According to a kind of metering system of embodiment, when the liquid level measured from described liquid level gauge to described housing top the second difference in height be less than or equal to third high degree H
3time, described control system controls described vent valve and remains on closed condition,
Described third high degree H
3determined by following formula:
Wherein, C
4be the 4th matching factor, C
4span be 1.5-2.1, be preferably 1.8.
According to a kind of metering system of embodiment, mass rate counts coriolis flowmeter.
According to a kind of metering system of embodiment, be provided with evacuated tube in the bottom of described housing, described evacuated tube is provided with exhaust-valve.
According to a kind of metering system of embodiment, described liquid level gauge comprises the ball float rising with liquid level or decline, be provided with the first corresponding with the second height and third high degree respectively travel switch and the second travel switch on the housing, described ball float coordinates with described first travel switch the switching triggering variable valve, and described ball float triggers exhaust valve closure with coordinating of described second travel switch.
According to a kind of metering system of embodiment, the liquid in described fluid is product oil or liquid chemical raw material.
According to cool down device and the metering system of above-mentioned various embodiment of the present utility model, 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, before liquid is discharged, gas floats to from the enough distances of the outlet of output channel, thus can not discharge with liquid; Like this, the mass flowmeter be arranged on output channel only measures the liquid part not containing gas, thus improves measuring accuracy.
Accompanying drawing explanation
In order to make the purpose of this utility model, feature and advantage more become apparent, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is the principle schematic of the metering system according to a kind of exemplary embodiment of the present utility model;
Fig. 2 is the detailed maps of the metering system according to a kind of exemplary embodiment of the present utility model;
Fig. 3 is the principle schematic of the device of cooling down according to a kind of exemplary embodiment of the present utility model; And
Fig. 4 is the principle schematic of the pilot system of the metering effect of the metering system of checking the utility model embodiment.
Embodiment
Although fully describe the utility model with reference to the accompanying drawing containing preferred embodiment of the present utility model, but before this describes, should be appreciated that those of ordinary skill in the art can revise utility model described herein, obtain technique effect of the present utility model simultaneously.Therefore, Yan Weiyi discloses widely to those of ordinary skill in the art must to understand above description, and its content does not lie in the exemplary embodiment of restriction described by the utility model.
In addition, in the following detailed description, for ease of explaining, many concrete details have been set forth to provide the complete understanding to this disclosure embodiment.But significantly, one or more embodiment also can be implemented when not having these details.In other cases, known construction and device diagrammatically embodies to simplify accompanying drawing.
See Fig. 1-3, according to a kind of exemplary embodiment of the present utility model, a kind of metering system 8 is provided, comprises: the liquid of cooling down in device 3 and convection cell for eliminating the gas componant in fluid carries out the mass flowmeter 6 measured.Device 3 of cooling down comprises housing 31, input channel 24 and the output channel 25 closed of the general cylindrical shape be such as made up of stainless steel material.Input channel 24 extends to the inside of housing 31 from the outside of housing 31, the end being positioned at housing 31 inside of input channel 24 is formed as curved portions 241 roughly, make driven through input channel 24 fluid flowed in housing 31 and form whirlpool, to impel gas in fluid and fluid separation applications, and the gas be separated accumulates in the top of housing 31, and liquid part remains in the bottom of housing 31.Output channel 25 extends to the inside of housing 31 in the bottom of input channel 24 from the outside of housing 31, to discharge the liquid in the fluid in housing 31.Mass flowmeter 6 is arranged in the outside of the housing 31 of device 3 of cooling down cools down on the output channel 24 of device 3, the internal diameter D of housing 31
2determined by following formula (1):
Wherein, C
1be the first matching factor, C
1span be 1.7-1.9, η
1the kinematic coefficient of viscosity of water at certain temperature, η
2the kinematic coefficient of viscosity of liquid component in synthermal lower fluid, D
1for the internal diameter of the entrance of mass flowmeter 6, Fv is design discharge or the rated flow of mass flowmeter 6.In a kind of exemplary embodiment, the first matching factor is 1.75-1.85, is preferably 1.8.
Be suitable for being applied according to the metering system 8 of the utility model embodiment and may be mixed with the product oil of bubble 21 or liquid chemical feedstock transportation to the induction system of storage tank 9 from boats and ships 2, and realize carrying out accurate-metering to the product oil be transferred or liquid chemical raw material.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 utility model embodiment, device 3 of cooling down coordinates with mass flowmeter 6, and the gas contained in the fluid of gas and liquid two kinds of compositions that device 3 of cooling down will come from outside (such as boats and ships) is eliminated.Due to the content of gas componant that comprises in fluid, (degree etc. of jolting in the actual liquid level in such as temperature, boats and ships, vessel motion distance, transportation) may be different in different environments, but do not comprise how many gas componants in pipe fluid, can be eliminated by device of cooling down, liquid component in a mass flowmeter convection cell measures, thus can improve the measuring accuracy of the liquid component to actual needs metering.Further, from formula (1), due to the internal diameter of the housing of device 3 of cooling down and the kinematic coefficient of viscosity η of water
1, the kinematic coefficient of viscosity η of liquid component in fluid
2, mass flowmeter 6 the internal diameter D of entrance
1, and the design discharge Fv of mass flowmeter 6 relevant.Particularly at the first matching factor C
1when being approximately 1.8, can guarantee in housing 31, to form whirlpool so that the gas of the fluid being arranged in housing 31 bottom is discharged to housing upper, thus realize the object eliminating gas, fluid can be made again to flow continuously in input channel 24, cool down device 3 and output channel 25, guarantee to unload the product oil on boats and ships 2 or liquid chemical raw material continuously rapidly.
In addition, cooling down in device, fluid enters from top, liquid is discharged from bottom, the position of the outlet of the curved portions 241 of input channel 24 is higher than entrance 251 position of output channel 25, can ensure that the bubble in fluid has longer floating distance, before liquid is discharged, the entrance 251 floated to from output channel 25 has enough distances, and gas can not be discharged with liquid.In addition, housing 31 comprises cylindrical part and is positioned at the circular arc shaped portion at the upper and lower two ends of cylindrical part; The position of the outlet in housing 3 of input channel 24 is positioned at the region of the height more than 1/3 of housing 31; Outlet 251 position in housing 31 of output channel 25 is roughly positioned at the region of the bottom of the cylindrical part of housing.
Also comprise the screen cloth 20 of general cylindrical shape according to the device of cooling down of the utility model embodiment, screen cloth 20 is arranged on housing 31 inside and also and between the inwall of housing 31 has preset distance, and screen cloth 20 is roughly the same with the height of the column part of housing 31.It is inner that the outlet of the curved portions 241 of input channel 24 and the entrance 251 of output channel 25 are all positioned at screen cloth 20.Tubular screen cloth 20 is uniformly distributed the round sieve 201 that multiple diameter is 5 millimeters-20 millimeters.By arranging screen cloth 20, fluid to flow through the sieve aperture 201 on screen cloth 20 repeatedly due to swirl flow at housing 31, filter gas face can be made to expand further, improves the effect of filtering gas.
In one embodiment, screen cloth 20 comprises: it is highly approximately the epimere of about 1/3rd of screen cloth height, and at epimere, every square metre has 1500-2500 the first sieve aperture, and the aperture of each first sieve aperture is 15-20 millimeter; It is highly approximately the interlude of about 1/3rd of screen cloth height, and 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 it is highly approximately the hypomere of about 1/3rd of screen cloth height, 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.Like this, can ensure that the transmitance of every square metre remains on 60%-80%.
In the interchangeable embodiment of one, screen cloth 20 comprises: it is highly approximately the epimere of about 1/3rd of screen cloth height, and 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; It is highly approximately the interlude of about 1/3rd of screen cloth height, and 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 it is highly approximately the hypomere of about 1/3rd of screen cloth height, 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.Like this, can ensure that the transmitance of every square metre remains on 60%-80%.
In the further embodiment of device of cooling down, curved portions 241 is arranged to downward-sloping relative to the liquid level of fluid.Due to annular and the downward-sloping structure of the curved portions 241 of input channel 24, add pressure at front pump (not shown), it is also descending that the fluid in housing 31 forms whirlpool, and bubble borrows buoyancy up, can improve the effect of filtering gas.In addition, the descending fluid of whirlpool repeatedly through the screen cloth 20 of tubular, filters repeatedly bubble, can improve the effect of filtering gas further.
In one embodiment, curved portions 241 place diameter of a circle is 3-4 times of the internal diameter of input channel 24.Like this, fluid rotates descending after entering housing 31, after liquid level rises, the stroke of fluid in housing 31 lengthens, the number of turns rotated can get more and more, and the bubble in fluid has longer ascent time, floats to and have distance enough from the entrance 251 going out output channel 25 before liquid part is discharged, and output channel 25 can not be entered into liquid, thus improve the purity of the liquid in output channel 25.
In one embodiment, be provided with liquid level gauge 17 between screen cloth 20 and housing 31, be provided with vent valve 19 at the top of housing, output channel 25 is provided with variable valve 23, vent valve 19 and variable valve 25 are opened according to the measurement result of displacement meter 17 or are closed.
In the metering system 8 of the utility model embodiment, as shown in Figure 3, housing 31 the first height H from bottom to top
1determined by following formula:
Wherein, C
2be the second matching factor, C
2span be 3.8-4.2, be preferably 4.Be appreciated that the first height H
1for the height of housing 31 inner housing space.By determining internal height and the internal diameter D of housing 31
2substantially the volume of housing 31 can be determined, guarantee further in housing 31, to form whirlpool to eliminate gas, fluid can be made again to flow continuously in input channel 24, cool down device 3 and output channel 25, guarantee to unload the product oil on boats and ships 2 or liquid chemical raw material continuously rapidly.
The metering system 8 of a kind of embodiment of the present utility model comprises control system (not shown) further, and the first difference in height when from the entrance 251 of output channel 25 to the liquid level measured by liquid level gauge 15 is greater than the second height H
2time, control system controls the variable valve 23 be arranged on output channel 25 and remains on open mode, makes liquid be transported to storage tank 9 through output channel 25; When described difference in height is not more than the second height H
2time, described control system regulating and controlling valve remains on closed condition, can not discharge with the liquid ensureing gas or be mixed with gas from entrance 251;
Described second height H
2determined by following formula:
Wherein, C
3be the 3rd matching factor, C
3span be 0.8-1.2, be preferably 1.Like this, the liquid level in housing 31 can be remained on higher than the second height H 2, guarantee that the stroke of fluid in housing 31 lengthens, gas can not enter into output channel 25 with liquid; Fluid can be made again to flow continuously in input channel 24, cool down device 3 and output channel 25.
In a further embodiment, when the liquid level measured from liquid level gauge 15 to housing 31 top the second difference in height be less than or equal to third high degree H
3time, described control system controls vent valve 19 and remains on closed condition,
Described third high degree H
3determined by following formula:
Wherein, C
4be the 4th matching factor, C
4span be 1.5-2.1, be preferably 1.8.
When the liquid level measured from liquid level gauge 15 to housing 31 top the second difference in height be less than or equal to third high degree H
3time, described control system controls vent valve 19 and is switched to closed condition, thus avoids liquid to discharge from gas exhaust duct 13.Because vent valve 19 is closed, the gas that housing 31 top is built up increases gradually, and gaseous tension increases, and liquid level declines, when liquid level drops to corresponding to the second height H
2height time, while closedown variable valve 23, open vent valve 19, to discharge the gas accumulating in liquid level top, gaseous tension reduced, the rising of the liquid level of fluid.
In a kind of exemplary embodiment, mass flowmeter 6 is Coriolis (Coriolis) mass flowmeter.Such as, can select the accurate mass flowmeter of height that the Ai Mosheng process control company limited of the U.S. produces, its precision is 1 ‰.
In a kind of exemplary embodiment, be provided with evacuated tube 14 in the bottom of housing 31, described evacuated tube 14 is provided with exhaust-valve 141, with the emptying liquid remained in housing 31.In various embodiment of the present utility model, exhaust-valve 141, vent valve 19 and variable valve 23 can be motorized valves.
In a kind of exemplary embodiment, liquid level gauge 15 comprise with liquid level rise or decline ball float 17, housing 31 is provided with respectively with the second height H
2with third high degree H
3the first corresponding travel switch 18 and the second travel switch 16, ball float 17 coordinates with the first travel switch 18 the switching triggering variable valve 23, the coordinating of ball float 17 and the second travel switch 16 triggers vent valve 19 and closes.The stainless-steel tube that liquid level gauge 15 can be 10mm-20mm by diameter is made, and 4/5ths of the inner whole height of its length, ball float 17 is arranged on steel pipe.
Although in the above embodiments, the parameter of the associated components of metering system is determined with certain kinematic coefficient of viscosity, but the utility model is not limited thereto, any liquid medium that the metering system of the utility model embodiment is less than this kinematic coefficient of viscosity for kinematic coefficient of viscosity is all applicable, such as, water at selected 20 DEG C is transmission medium, its coefficient of viscosity 1.0050, determine the parameter of the associated components of metering system according to this and the metering system made, kinematic coefficient of viscosity at the temperature at metering system actual condition place is less than 1.0050 any liquid medium all applicable.
With reference to above experimental formula (1)-(4), the medium of the design discharge of the structure of the specification of mass flowmeter, device of cooling down, metering system, selected metering effectively can be mated, produce metering system that is effective, that be suitable for, precision can reach 1 ‰.
Describing referring to Fig. 1-3 utilizes device and the metering system of cooling down of the present utility model transmit and measure the course of work of the medium of such as product oil and so on.
First, the input channel 24 of the metering system 8 of the utility model embodiment is connected to the boats and ships 2 being mounted with product oil (liquid), output channel 25 is connected to storage tank 9, now, variable valve 23 and vent valve 19 all remain on closed condition.In addition, input channel 24 is provided with the pump housing 10 for withdrawn fluid and hand valve 12, output channel 25 is provided with hand valve 11, boats and ships 2 and storage tank 9 are also provided with the liquid level gauge 1 for measuring liquid level.
Under the driving of the pump housing 10, fluid 22 containing bubble 21 flows into through input channel 24 device 3 of cooling down from boats and ships 2, fluid enters from the top of housing 31 from input channel 24, the liquid level of the fluid in housing 31 rises, the fluid flowed out from input channel 24 rotates and descending housing 31 in, and liquid level rises gradually, and bubble is up by means of buoyancy, tubular filter air sifter net 20 pairs of bubbles filter repeatedly, make gas accumulate in housing 31 top.
In the liquid level uphill process of fluid, when liquid level rises to corresponding to the second height H
2during the height in (variable valve triggering face), ball float 17 coordinates with the first travel switch 18, control system (not shown) regulating and controlling valve 23 is switched to open mode from closed condition, to discharge the liquid not containing gas from output channel 25, liquid 5 enters storage tank 9 after the mass flowmeter 6 be arranged on output channel 25 measures, meanwhile, control vent valve 19 and remain on closed condition.Afterwards, metering system enters normal conveying 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 closed housing 31, and the pressure on housing 31 top increases, and causes the liquid level in housing 31 to decline, when ball float drops to corresponding to the second height H
2during the height in (variable valve triggering face), ball float 17 coordinates with the first travel switch 18, control system controls electronic variable valve 23 and is switched to closed condition from open mode, output channel 25 is entered to avoid gas, meanwhile, control system also controls vent valve 19 and opens, to discharge the gas accumulating in liquid level top, reduce the pressure of gas in housing 31, the liquid level of fluid rises.In the case, if liquid level continues to rise correspond to third high degree H
3during the height in (vent valve triggering face), described ball float 17 coordinates with the second travel switch 16, and control system controls vent valve 19 and closes, and enters gas outlet 13 to avoid liquid.Keep the state of closing at vent valve 19 under, along with fluid continuously flows into device 8 of cooling down, gas constantly accumulates in the top of closed housing 31, and the pressure on housing 31 top increases, and causes the liquid level in housing 31 to decline, when ball float drops to corresponding to the second height H
2during the height in (outlet electric valve triggering face), ball float 17 coordinates with the first travel switch 18, and control system controls electronic variable valve 23 and is switched to closed condition from open mode and controls vent valve 19 and open.Like this, the liquid level of fluid is constrained to constantly floats between the first travel switch 18 and the second travel switch 16, thus realize the object eliminating gas, fluid can be made again to flow continuously in input channel 24, cool down device 3 and output channel 25, guarantee the product oil unloaded rapidly continuously on boats and ships 2.
It will be appreciated by those skilled in the art that, utilize cool down device and the metering system of the utility model embodiment, automatically can eliminate all gas in the fluid needing metering, then be measured the various variable such as mass rate, mass accumulation amount, density, volumetric flow rate, volume-cumulative amount of the liquid component not containing gas by mass rate.The metering system of the utility model embodiment can be configured to integrated automatic Measuring System, comprises device of cooling down, mass flowmeter, and wherein, mass flowmeter comprises relevant sensor, core processor and transmitter etc.
In order to verify actual performance and the measuring accuracy of the verification system of the metering system of embodiment, be assembled into the pilot system shown in Fig. 4.This pilot system comprises: the metering system 8 described in the above-mentioned various embodiment of the utility model, the first tank 4 be communicated with the inlet fluid of the input channel 24 of metering system, the second tank 7 be communicated with the inlet fluid of the output channel 25 of metering system, the mass flowmeter 27 be arranged on input channel, be arranged on the computing machine 28 of the pump housing 10 on output channel 25 and the measurement result for the mass flowmeter 8 of display quality flowmeter 27 and metering system.In this pilot system, with the first tank 4 and the second tank 7 boats and ships and storage tank respectively that can weigh weight, and the mass flowmeter 27 with the mass flowmeter 6 of metering system 8 with same model is installed on input channel 24.Apply 485 PORT COM and turn USB interface, 485 PORT COM on the transmitter of quality of connection flowmeter 6 and 27 and the USB interface of computing machine 28.Like this, by 485 communication modes, application Prolink program, computing machine 28 and mass flowmeter 6 and 27 are carried out real-time communication, by setpoint frequency by computing machine 28 recording quality parameters that flowmeter is surveyed automatically, be convenient to comprehensively analyze parameters, judge the performance of metering system 8 intuitively.In addition, set mass rate unit as kg/hour or ton/hour.
Example 1:
For D
1the mass flowmeter 6 and 27, the design discharge F of pilot system of=50 millimeters (bore is 50 millimeters)
vbe 50 cubes ms/h, test medium is water.Cool down the cylindrical internal diameter D of housing of device 3
2be 0.5 meter, the housing 3 inside distance H from the top to the bottom of device of cooling down
1it is 1.68 meters; The first difference in height (i.e. H between the height of least significant end distance first travel switch of the entrance 251 of the output channel 25 in housing
2) be 0.56 meter; The second difference in height (i.e. H between the height of top (i.e. the entrance of gas outlet 13) distance the second travel switch in housing 3
3) be 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 flowmeter 27, then flow into the second tank 7.Measure the mass change of water in two tanks with the weighing-appliance (such as weighbridge) that precision is 0.05 grade, the ship inspection in similar actual liquid chemical Products Trade handing-over and housing inspection, but precision can reach 0.1 grade.Compared by the mass accumulation amount that mass flowmeter 6 and 27 is measured, to weigh the precision of metering system.In the process of drawing water, the import repeatedly can raising input channel 24 in the first tank 4 makes it partly leave the water surface, sucks input channel to make air with water.The first tank 4 liquid level decline and close to bottom time, also have a large amount of gas and enter input channel 24, in water, the instantaneous content of air is 0% to 100%.Similarly, carrying in the process of product oil from boats and ships 2 to storage tank 9, air also can enter into input channel with liquid product oil, especially bottom is dropped at each cabin liquid level, when entering the receipts storehouse stage, have a large amount of gas or even 100% gas pumped enter in pipeline, this is also the reason of the measuring accuracy affecting mass flowmeter in existing trade transaction process because of gas-liquid two-phase.By the metering system process of the utility model embodiment, can eliminate in fluid with the gas of content 0% to 100%, reach the operating mode needed for mass flowmeter accurate measurement.When the water of the first tank 4 li is close to after exhausting, input channel can be placed into the second tank 7, output channel 25 be placed the first tank 4, to proceed test.So repeatedly repeatedly, similar boats and ships are to the many storehouses delivery in storage tank releases, the process repeatedly receiving storehouse.
Having drawn water after at every turn, open the display of two weighing-appliances being used for the first tank and the second tank, output channel 25 and input channel 24 have been withdrawn corresponding tank, records the weight of water in two tanks 4.Constantly repeatedly repeat above process of the test, terminate whole process of the test to any time, the recruitment calculating each tank is each amount of discharging water, is more all added the weighing semi-invariant being and all discharging water.Meanwhile, the mass flowmeter 6 of computing machine 28 display and the semi-invariant of mass flowmeter 27 is read.
Test findings is as shown in table 1 below for the first time:
Table 1
Second time test findings is as shown in table 2 below:
Table 2
Test findings is as shown in table 3 below for the third time:
Table 3
Illustrated by 3 tests, when the water containing gas process without metering system 8, the Cumulation quantity error rate measured of mass flowmeter 27 is comparatively large, the measuring accuracy of mass flowmeter of gases affect contained by water.With flowmeter quality 27 relative to weighing-appliance error rate compared with, flowmeter quality 6 obviously declines relative to the error rate of weighing-appliance, and its error rate all drops to significantly lower than giving tacit consent to acceptable error rate 0.3% in the world, and precision can reach 1 ‰.
Example 2:
For D
1the mass flowmeter 6 and 27 of=100 (bore is 100 millimeters), the design discharge F of pilot system
vbe 250 cubes ms/h; Cool down the cylindrical internal diameter D of housing of device 3
2it is 1.26 meters; Cool down the housing 3 inside distance H from the top to the bottom of device
1it is 2.66 meters; The first difference in height (i.e. H between the height of least significant end distance first travel switch of the entrance 251 of the output channel 25 in housing
2) be 0.45 meter; The second difference in height (i.e. H between the height of top (i.e. the entrance of gas outlet 13) distance the second travel switch in housing 3
3) be 0.25 meter.
Example 3
For D
1the mass flowmeter of=150 (bore is 150 millimeters), the design discharge F of pilot system
vbe 500 cubes ms/h; Cool down the cylindrical internal diameter D of housing of device 3
2it is 1.69 meters; Cool down the housing 3 inside distance H from the top to the bottom of device
1it is 3.14 meters; The first difference in height (i.e. H between the height of least significant end distance first travel switch of the entrance 251 of the output channel 25 in housing
2) be 0.5 meter; The second difference in height (i.e. H between the height of top (i.e. the entrance of gas outlet 13) distance the second travel switch in housing 3
3) be 0.28 meter.
The embodiment of the further aspect of annex the utility model, provides one to cool down device 3, comprises housing 31, input channel 24 and the output channel 25 closed of the general cylindrical shape be such as made up of stainless steel material.Input channel 24 extends to the inside of housing 31 from the outside of housing 31, the end being positioned at housing 31 inside of input channel 24 is formed as curved portions 241 roughly, make driven through input channel 24 fluid flowed in housing 31 and form whirlpool, to impel gas in fluid and fluid separation applications, and the gas be separated accumulates in the top of housing 31, and liquid part remains in the bottom of housing 31.Output channel 25 extends to the inside of housing 31 in the bottom of input channel 24 from the outside of housing 31, to discharge the liquid in the fluid in housing 31.
At cool down device and metering system according to the utility model embodiment, instantaneous mass rate can be measured, from be metered into the mass accumulation amount of the random time section in terminal procedure, precision can reach 1 ‰.Based on metering system of the present utility model, a kind of new product oil trade transaction scheme can be established, the mass accumulation amount of the liquid namely measured with the metering system of the utility model embodiment is for according to carrying on trade handing-over, significantly can reduce the quantitative dispute existed in liquid petroleum chemicals trade transaction mode, avoid the enormous expenditure because commodity inspection, capacity demarcation etc. spend, shorten the time of each trade transaction, improve the efficiency of operation of petrochemical logistics industry.
It will be appreciated by those skilled in the art that, embodiment described above is all exemplary, and those skilled in the art can make improvements, independent assortment can be carried out when the conflict of the structure described in various embodiment in not recurring structure or principle, thus on the basis solving technical matters of the present utility model, realize more kinds of cooling system for nuclear power plant containment shell and cooling means.
After detailed description preferred embodiment of the present utility model; those of ordinary skill in the art can clearly understand; various change and change can be carried out under the protection domain not departing from claim of enclosing and spirit, and the utility model is not also limited to the embodiment of examples cited embodiment in instructions.It should be noted that word " comprises " and do not get rid of other element or step, word "a" or "an" is not got rid of multiple.In addition, any element numbers of claim should not be construed as restriction scope of the present utility model.
Claims (24)
1. to cool down a device, it is characterized in that, comprising:
The housing closed of general cylindrical shape;
Input channel, the inside of described housing is extended to from the outside of described housing, the end being positioned at described enclosure interior of described input channel is formed as curved portions roughly, the fluid flowed in described housing through described input channel is made to form whirlpool, to impel gas in described fluid and fluid separation applications, and the gas be separated accumulates in the top of described housing;
Output channel, 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.
2. to cool down as claimed in claim 1 device, it is characterized in that, also comprise:
The screen cloth of general cylindrical shape, be arranged on described enclosure interior and also and between the inwall of described housing have preset distance, described screen cloth is roughly the same with the height of the column part of described housing.
3. cool down as claimed in claim 1 or 2 device, it is characterized in that, described curved portions is arranged to downward-sloping relative to the liquid level of described fluid.
4. to cool down as claimed in claim 1 or 2 device, it is characterized in that, described curved portions place diameter of a circle be the 3-4 of the internal diameter of described input channel doubly.
5. cool down as claimed in claim 2 device, it is characterized in that, described screen cloth comprises:
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.
6. cool down as claimed in claim 2 device, it is characterized in that, described screen cloth comprises:
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.
7. to cool down as claimed in claim 2 device, it is characterized in that, between described screen cloth and housing, be provided with liquid level gauge (17), be provided with vent valve (19) at the top of described housing, described vent valve is opened according to the measurement result of displacement meter or is closed.
8. a metering system, is characterized in that, comprising:
To cool down as claimed in claim 1 device; And
Mass flowmeter, cools down on the output channel of device described in being arranged on, the internal diameter D of described housing in the outside of device of cooling down
2determined by following formula:
Wherein, C
1be the first matching factor, C
1span be 1.7-1.9, η
1the kinematic coefficient of viscosity of water, η
2the kinematic coefficient of viscosity of liquid component in fluid, D
1for the inlet inside diameter of mass flowmeter, Fv is the design discharge of mass flowmeter.
9. metering system as claimed in claim 8, is characterized in that, described in device of cooling down also comprise:
The screen cloth of general cylindrical shape, be arranged on described enclosure interior and also and between the inwall of described housing have preset distance, described screen cloth is roughly the same with the height of the column part of described housing.
10. metering system as claimed in claim 8 or 9, it is characterized in that, described curved portions is arranged to downward-sloping relative to the liquid level of described fluid.
11. metering systems as claimed in claim 8 or 9, is characterized in that, described curved portions place diameter of a circle is 3-4 times of the internal diameter of described input channel.
12. metering systems as claimed in claim 9, it is characterized in that, described screen cloth comprises:
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.
13. metering systems as claimed in claim 9, it is characterized in that, described screen cloth comprises:
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.
14. metering systems as claimed in claim 8, it is characterized in that, described first matching factor is 1.75-1.85.
15. metering systems as claimed in claim 14, it is characterized in that, described first matching factor is 1.8.
16. metering systems as claimed in claim 9, it is characterized in that, liquid level gauge (17) is provided with between described screen cloth and housing, vent valve (19) is provided with at the top of described housing, described output channel is provided with variable valve (23), and described vent valve and variable valve are opened according to the measurement result of displacement meter or are closed.
17. metering systems as claimed in claim 16, is characterized in that, described housing the first height H 1 is from bottom to top determined by following formula:
Wherein, C
2be the second matching factor, C
2span be 3.8-4.2.
18. metering systems as claimed in claim 17, is characterized in that, C
2span be 4.
19. metering systems as described in any one in claim 16 to 18, it is characterized in that, comprise control system further, the first difference in height when from the entrance of described output channel to the liquid level measured by described liquid level gauge is greater than the second height H
2time, described control system controls described variable valve and remains on open mode, when described first difference in height is not more than the second height H
2time, described control system controls described variable valve and remains on closed condition,
Described second height H
2determined by following formula:
Wherein, C
3be the 3rd matching factor, C
3span be 0.8-1.2.
20. metering systems as claimed in claim 19, is characterized in that, C
3span be 1.
21. metering systems as claimed in claim 19, is characterized in that, when the liquid level measured from described liquid level gauge to described housing top the second difference in height be less than or equal to third high degree H
3time, described control system controls described vent valve and remains on closed condition,
Described third high degree H
3determined by following formula:
Wherein, C
4be the 4th matching factor, C
4span be 1.5-2.1.
22. metering systems as claimed in claim 21, is characterized in that, C
4span be 1.8.
23. metering systems as claimed in claim 8 or 9, it is characterized in that, mass rate counts coriolis flowmeter.
24. metering systems as claimed in claim 21, it is characterized in that, described liquid level gauge comprises the ball float (17) rising with liquid level or decline, and is provided with the first corresponding with the second height and third high degree respectively travel switch and the second travel switch on the housing
Described ball float coordinates with described first travel switch the switching triggering variable valve, and described ball float triggers exhaust valve closure with coordinating of described second travel switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303250.2U CN204881741U (en) | 2015-05-12 | 2015-05-12 | Device and measurement system cool down |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303250.2U CN204881741U (en) | 2015-05-12 | 2015-05-12 | Device and measurement system cool down |
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|---|---|
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ID=54826103
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289428A (en) * | 2015-05-12 | 2017-01-04 | 吉林大学 | Cool down device and metering system |
| CN107144676A (en) * | 2017-06-12 | 2017-09-08 | 山东龙发环保科技有限公司 | Detection device and gauge line, metering device and its metering method |
| CN108593013A (en) * | 2018-01-31 | 2018-09-28 | 中国农业科学院油料作物研究所 | A kind of accurate metering system and metering method of grease unloading |
| CN112212933A (en) * | 2020-09-10 | 2021-01-12 | 宁波水表(集团)股份有限公司 | Wet water meter |
-
2015
- 2015-05-12 CN CN201520303250.2U patent/CN204881741U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289428A (en) * | 2015-05-12 | 2017-01-04 | 吉林大学 | Cool down device and metering system |
| CN106289428B (en) * | 2015-05-12 | 2018-03-27 | 吉林大学 | Cool down device and metering system |
| CN107144676A (en) * | 2017-06-12 | 2017-09-08 | 山东龙发环保科技有限公司 | Detection device and gauge line, metering device and its metering method |
| CN108593013A (en) * | 2018-01-31 | 2018-09-28 | 中国农业科学院油料作物研究所 | A kind of accurate metering system and metering method of grease unloading |
| CN112212933A (en) * | 2020-09-10 | 2021-01-12 | 宁波水表(集团)股份有限公司 | Wet water meter |
| CN112212933B (en) * | 2020-09-10 | 2024-05-28 | 宁波水表(集团)股份有限公司 | Wet water meter |
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