CN106441473A - Precooling-free mass flowmeter - Google Patents
Precooling-free mass flowmeter Download PDFInfo
- Publication number
- CN106441473A CN106441473A CN201610784783.6A CN201610784783A CN106441473A CN 106441473 A CN106441473 A CN 106441473A CN 201610784783 A CN201610784783 A CN 201610784783A CN 106441473 A CN106441473 A CN 106441473A
- Authority
- CN
- China
- Prior art keywords
- housing
- mass flowmenter
- phase outlet
- liquid
- measurement pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/78—Direct mass flowmeters
- G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
- G01F1/84—Coriolis or gyroscopic mass flowmeters
- G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention belongs to the technical field of autometering and particularly discloses a precooling-free mass flowmeter which is characterized by comprising a casing, a liquid phase inlet, a liquid phase outlet, a gaseous phase outlet, a flow measuring device and a supporting frame. The flow measuring device is fixed to an internal space of the casing through the supporting frame. A low-temperature medium fluid is added into the internal space of the casing, gas is discharged back to a storage tank through the gaseous phase outlet; in the liquid adding process, the flow measuring device is immersed in the low-temperature medium fluid to achieve a precooling effect; when the liquid level is higher than an inlet of the flow measuring device, due to pressure entry, the flow measuring device begins to measure the flow; and before the beginning of measurement, the flow measuring device has already been in a low-temperature state. In addition, in the measurement process, the flow measuring device always undergoes low-temperature soaking and does not undergo heat exchange with the outside, gas in the internal space can be discharged out of the gaseous phase outlet, generated flash steam can be reduced, and extra precooling operation is not needed any longer.
Description
Technical field
The invention belongs to automatic Measurement Technology for Tri field, specifically, discloses one kind and exempts from pre-cooling mass flowmenter.
Background technology
Flow measurement is one of ingredient of measuring science technology, and it is had with national economy, national defense construction, scientific research
Close relationship, the development to guarantee product quality, improve production efficiency, the technology that advances science all has important effect, special
Be not in the more and more high current era of energy crisis, industrial production automation degree, status of the effusion meter in national economy
Become apparent from effect.
Effusion meter be used for indicating measured flux and (or) in the selected time interval fluid total volume instrument, in simple terms
Exactly it is used for measuring a kind of instrument of fluid flow in pipeline or open channel.The volume of fluid is the function of fluid temperature (F.T.) and pressure,
It is a dependent variable, and the quality of fluid is one not with time, space temperature, the change of pressure and the amount that changes.Effusion meter
Be widely used in every field, for example, field of industrial production, flow instrument be process instrument and meter for automation with device in big class instrument
One of table, it be widely used in metallurgy, electric power, coal, chemical industry, oil, traffic, building, light textile, food, medicine, agricultural,
The national economy every field such as environmental conservation and people's daily life, is development industrial and agricultural production, and energy saving improves product matter
Amount, increases economic efficiency and the important tool of management level is occupied an important position in national economy.
Traditional low temperature metering system, is to ensure measuring accuracy and stablize to need before metering to whole system portion in contact with the electrolyte
Pre-cooling is carried out, including effusion meter.Have an advantage in that：Portion in contact with the electrolyte pipe temperature reaches before metering and uses temperature, for example, liquefaction
Natural gas (LNG) needs -150 DEG C or so of temperature；Easily gasify because cryogenic liquid runs into thermal source (as the pipeline of room temperature), pre-cooling can
To avoid gasifying in metering process.Its shortcoming is：Heat in metering system is taken back storage tank, in storage tank, temperature rises pressure
Power is provided, and pressure of storage tank is raised and produces flash steam (BOG), affects equipment accuracy and safety, therefore measures time phase
To length.
Content of the invention
For the problems referred to above, the present invention discloses one kind exempts from pre-cooling mass flowmenter, it is characterised in that include：Housing, liquid
Phase entrance, liquid-phase outlet, gaseous phase outlet, foot, flow measurement device, bracing frame；The flow measurement device passes through bracing frame
It is fixed on the inner space of housing.
Optionally, described exempt from pre-cooling mass flowmenter, it is characterised in that the flow measurement device is Coriolis stream
Gauge, including measurement pipe, electromagnetic driver, electromagnetic signal detector and DSP.
Optionally, described exempt from pre-cooling mass flowmenter, it is characterised in that the measurement tube inlet of the measurement pipe is in housing
Open Side Down for vertical direction in inner space, and the measurement pipe outlet of the measurement pipe is connected with gaseous phase outlet, cryogenic media stream
Body enters the inner space of housing by the liquid phase entrance, meets thermogenetic gas and rises from gaseous phase outlet discharge, returns
Stream enters the storage tank of cryogenic media fluid, floods measurement tube inlet, cryogenic media stream as the liquid level of cryogenic media fluid rises
Body is pressed into measurement pipe, starts gage work, cryogenic media fluid pass through after flowing through measurement pipe through the outlet of connected measurement pipe and
Liquid-phase outlet flows out, during cryogenic media fluid flows through the measurement pipe of coriolis force effusion meter, the electricity of coriolis force effusion meter
Magnetic driven device and electromagnetic signal detector work, and the signal that electromagnetic signal detector is detected is through DSP process and computing,
Carry out gage work.
Optionally, described exempt from pre-cooling mass flowmenter, it is characterised in that the housing includes outer gallbladder housing and inner lining,
The flow measurement device is fixed on inner bag space by bracing frame.
Optionally, described exempt from pre-cooling mass flowmenter, it is characterised in that constitute between the outer gallbladder housing and inner lining every
Thermosphere.
Optionally, described exempt from pre-cooling mass flowmenter, it is characterised in that fill between the outer gallbladder housing and inner lining heat-insulated
Material, and be evacuated further.
Optionally, described exempt from pre-cooling mass flowmenter, it is characterised in that fill between the outer gallbladder housing and inner lining heat-insulated
Material, and fill helium further.
Optionally, described exempt from pre-cooling mass flowmenter, it is characterised in that the heat-barrier material is glass fibre, asbestos, cotton
Any one in wadding or rock wool.
Cryogenic media fluid is filled in the inner space for exempting from pre-cooling mass flowmenter, and gas is flow back to from gaseous phase outlet
Storage tank, liquid metering unit in filling process is immersed in cryogenic media fluid realizes precooling effect, when liquid position is higher than meter
During quantity sensor entrance, just start metering as pressure enters measurement pipe, before metering starts, metering unit has arrived at low temperature
State, during metering unit is soaked in low temperature all the time in metering process in addition, and carries out heat exchange, inner bag with the external world
Middle gas can be discharged from gas phase mouth, therefore can reduce flash steam generation, it is no longer necessary to extra pre-cooling operation.
Description of the drawings
Accompanying drawing 1 is the structure chart of facing for exempting from pre-cooling mass flowmenter in the embodiment of the present invention, outer gallbladder shell of can regarding sb. as an outsider in accompanying drawing 1
Body 1, liquid phase entrance 2, liquid-phase outlet 3, gaseous phase outlet 4, and foot 5.
Accompanying drawing 2 is the side block diagram from the observation of liquid phase entrance side for exempting from pre-cooling mass flowmenter in the embodiment of the present invention,
Can regard sb. as an outsider in accompanying drawing 2 gallbladder housing 1, liquid phase entrance 2, gaseous phase outlet 4, and foot 5.
Accompanying drawing 3 is the side block diagram from the observation of liquid-phase outlet side for exempting from pre-cooling mass flowmenter in the embodiment of the present invention,
Can regard sb. as an outsider in accompanying drawing 3 gallbladder housing 1, liquid-phase outlet 3, gaseous phase outlet 4, and foot 5.
Accompanying drawing 4 is the section longitudinally slit along flat tank long axis direction for exempting from pre-cooling mass flowmenter in the embodiment of the present invention
Figure, the visible flat whole Coriolis flowmeter for filling in inner bag in accompanying drawing 4, the measurement tube inlet 6 of Coriolis flowmeter,
Measurement pipe outlet 7, and inner lining 8.
Accompanying drawing 5 is that the lateral cross section circumference along gaseous phase outlet 4 for exempting from pre-cooling mass flowmenter in the embodiment of the present invention hangs down
Directly after the diameter of flat tank long axis direction is longitudinally slit, including the sectional view of the half part of liquid phase entrance 2, can regard sb. as an outsider in accompanying drawing 5
Gallbladder housing 1, inner lining 8, the thermal insulation layer 9 between outer gallbladder housing 1 and inner lining 8, liquid phase entrance 2, gaseous phase outlet 4, measurement pipe 10,
Bracing frame 11 and inner bag space 12.
Accompanying drawing 6 is that the lateral cross section circumference along gaseous phase outlet 4 for exempting from pre-cooling mass flowmenter in the embodiment of the present invention hangs down
Directly after the diameter of flat tank long axis direction is longitudinally slit, including the sectional view of the half part of liquid-phase outlet 4, visible in accompanying drawing 6, liquid
Mutually outlet 3, gaseous phase outlet 4, measurement pipe 10, measure tube inlet 6, and bracing frame 11.
Description of reference numerals：
Outer gallbladder housing -1, liquid phase entrance -2, liquid-phase outlet -3, gaseous phase outlet -4, foot -5, measurement tube inlet -6, measurement
Pipe outlet -7, inner lining -8, thermal insulation layer -9, measurement pipe -10, bracing frame -11, inner bag space -12.
Specific embodiment
Exempt from pre-cooling mass flowmenter with reference to specific embodiments and the drawings 1-6 to one kind of the present invention to do further
Illustrate, but protection scope of the present invention is not limited to this.
Accompanying drawing 1 is the structure chart of facing for exempting from pre-cooling mass flowmenter in the embodiment of the present invention, outer gallbladder shell of can regarding sb. as an outsider in accompanying drawing 1
Body 1, liquid phase entrance 2, liquid-phase outlet 3, gaseous phase outlet 4, and foot 5.It can be seen from figure 1 that the angle observes outer gallbladder housing 1
Outline is olive shape, and liquid phase entrance 2 is used for cryogenic media fluid to be measured and enters inner bag space 12.Liquid-phase outlet 3 and survey
Buret outlet 7 is connected, for the outflow by the cryogenic media fluid of measurement pipe 10.Gaseous phase outlet 4 is used for cryogenic media fluid
It is initially entered into the gas after the 12 heat gasification of inner bag space to flow out, is connected with storage tank, gas is led back to storage tank.Foot 5 is used for
Exempt from the standing of pre-cooling mass flowmenter.
Accompanying drawing 2 is the side block diagram from the observation of liquid phase entrance side for exempting from pre-cooling mass flowmenter in the embodiment of the present invention,
Can regard sb. as an outsider in accompanying drawing 2 gallbladder housing 1, liquid phase entrance 2, gaseous phase outlet 4, and foot 5.Accompanying drawing 3 be exempt from the embodiment of the present invention pre-
The side block diagram from the observation of liquid-phase outlet side of cold mass flowmenter, gallbladder housing 1 of can regarding sb. as an outsider in accompanying drawing 3, liquid-phase outlet 3, gas
4, and foot 5 are mutually exported.Observed by the angle of accompanying drawing 2 and 3, the outline of outer gallbladder housing 1 is circular.Exempt from pre-cooling matter
Amount effusion meter is with the major axis of cross section as boundary, and liquid-phase outlet 3 and gaseous phase outlet 4 are in side, and liquid phase entrance 2 is in opposite side.
Accompanying drawing 4 is the section longitudinally slit along flat tank long axis direction for exempting from pre-cooling mass flowmenter in the embodiment of the present invention
Figure, the visible flat measurement pipe 10 for filling the Coriolis flowmeter in inner bag, the measurement pipe of Coriolis flowmeter in accompanying drawing 4
Entrance 6, measurement pipe outlet 7, and inner lining 8.For the ease of observing and understanding the structure that the present invention exempts from pre-cooling mass flowmenter
With gas-liquid movement path, in figure do not draw out the electromagnetic signal detector of Coriolis flowmeter, electromagnetic driver, and other
Prior art part.From accompanying drawing 4, measurement pipe 10 is vertically arranged in inside inner lining 8 perpendicular to horizontal plane, and measurement pipe enters
The opening direction of mouth 6 is downwardly open in vertical direction with sharp angle, and the angle is preferably 0-45 degree angle；Measurement pipe outlet 7 with
Liquid-phase outlet 3 is connected.
Accompanying drawing 5 is that the lateral cross section circumference along gaseous phase outlet 4 for exempting from pre-cooling mass flowmenter in the embodiment of the present invention hangs down
Directly after the diameter of flat tank long axis direction is longitudinally slit, including the sectional view of the half part of liquid phase entrance 2, can regard sb. as an outsider in accompanying drawing 5
Gallbladder housing 1, inner lining 8, the thermal insulation layer 9 between outer gallbladder housing 1 and inner lining 8, liquid phase entrance 2, gaseous phase outlet 4, measurement pipe 10,
Bracing frame 11 and inner bag space 12.Accompanying drawing 6 be exempt from the embodiment of the present invention pre-cooling mass flowmenter along gaseous phase outlet 4
Lateral cross section circumference perpendicular to the diameter of flat tank long axis direction longitudinally slit after, including the sectional view of the half part of liquid-phase outlet 4,
Visible in accompanying drawing 6, liquid-phase outlet 3, gaseous phase outlet 4, measurement pipe 10, measure tube inlet 6, and bracing frame 11.
Filling with insulation material in thermal insulation layer 9 between outer gallbladder housing 1 and inner lining 8, can be glass fibre, asbestos, cotton
Wadding, rock wool etc..Thermal insulation layer 9 can be evacuated on the basis of filling with insulation material further, or carries out helium filling.
On the above-mentioned architecture basics for exempting from pre-cooling mass flowmenter, cryogenic media fluid enters inner bag by liquid phase entrance 2
Space 12, meets thermogenetic gas rising and discharges from gaseous phase outlet 4, flow back into the storage tank of cryogenic media fluid, will not be to inner bag
The internal pressure in space 12 is impacted；Measurement pipe was flooded as the liquid level of 12 inner cryogenic medium fluid of inner bag space rises
Entrance 6, when reaching certain pressure, cryogenic media fluid is pressed into measurement pipe 10, passes through through connected survey after flowing through measurement pipe 10
Buret outlet 7 and liquid-phase outlet 3 flow out exempts from pre-cooling mass flowmenter, flows through the measurement of coriolis force effusion meter in cryogenic media fluid
During pipe 10, the electromagnetic driver of coriolis force effusion meter and electromagnetic signal detector work, and electromagnetic signal detector
The signal for detecting is processed and computing through DSP, carries out gage work.
Cryogenic media fluid is filled in inner bag space 12, and gas flows back to storage tank from gaseous phase outlet, and liquid is in filling process
Middle metering unit is immersed in cryogenic media fluid and realizes precooling effect, when liquid position is higher than gage probe entrance, due to
Pressure enters measurement pipe 10 and just starts metering, and before metering starts, metering unit has arrived at low temperature state, is measuring in addition
During metering unit is soaked in low temperature all the time in journey, and heat exchange is carried out with the external world, in inner bag, gas can be from gas phase
Mouth is discharged, therefore can reduce flash steam generation, it is no longer necessary to extra pre-cooling operation.
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary enforcement for adopting
Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention
In the case of god and essence, various modifications and improvement can be made, these modifications and improvement are also considered as protection scope of the present invention.
Claims (9)
1. one kind exempts from pre-cooling mass flowmenter, it is characterised in that include：Housing, liquid phase entrance, liquid-phase outlet, gaseous phase outlet, stream
Measuring device, bracing frame；The flow measurement device is fixed on the inner space of housing by bracing frame.
2. according to claim 1 pre-cooling mass flowmenter is exempted from, it is characterised in that the flow measurement device is coriolis force
Mass flowmenter, including measurement pipe, electromagnetic driver, electromagnetic signal detector and DSP.
3. according to claim 2 pre-cooling mass flowmenter is exempted from, it is characterised in that the measurement tube inlet of the measurement pipe exists
Open Side Down for vertical direction in the inner space of housing, and the measurement pipe outlet of the measurement pipe is connected with liquid-phase outlet, low temperature
Medium fluid enters the inner space of housing by the liquid phase entrance, meets thermogenetic gas and rises from gaseous phase outlet row
Going out, the storage tank of cryogenic media fluid being flowed back into, measurement tube inlet was flooded as the liquid level of cryogenic media fluid rises, low temperature is situated between
Mass flow body is pressed into measurement pipe, starts gage work, cryogenic media fluid flow through after measurement pipe through the outlet of connected measurement pipe and
Liquid-phase outlet flows out, during cryogenic media fluid flows through the measurement pipe of coriolis force effusion meter, the electricity of coriolis force effusion meter
Magnetic driven device and electromagnetic signal detector work, the signal that electromagnetic signal detector is detected is processed and computing through DSP, is carried out
Gage work.
4. according to claim 1 pre-cooling mass flowmenter is exempted from, it is characterised in that the housing includes outer gallbladder housing and interior
Gallbladder body, the flow measurement device is fixed on inner bag space by bracing frame.
5. according to claim 4 pre-cooling mass flowmenter is exempted from, it is characterised in that between the outer gallbladder housing and inner lining
Thermal insulation layer is set.
6. according to claim 4 pre-cooling mass flowmenter is exempted from, it is characterised in that between the outer gallbladder housing and inner lining
Heat-barrier material is filled, and is evacuated further.
7. according to claim 4 pre-cooling mass flowmenter is exempted from, it is characterised in that between the outer gallbladder housing and inner lining
Heat-barrier material is filled, and fills helium further.
8. according to claim 6 or 7, pre-cooling mass flowmenter is exempted from, it is characterised in that the heat-barrier material is glass
Any one in fiber, asbestos, cotton-wool or rock wool.
9. according to any one in claim 4-7, pre-cooling mass flowmenter is exempted from, it is characterised in that the outer gallbladder housing
Cast by aluminum or aluminum alloy with inner lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784783.6A CN106441473A (en) | 2016-08-31 | 2016-08-31 | Precooling-free mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610784783.6A CN106441473A (en) | 2016-08-31 | 2016-08-31 | Precooling-free mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106441473A true CN106441473A (en) | 2017-02-22 |
Family
ID=58091397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610784783.6A Pending CN106441473A (en) | 2016-08-31 | 2016-08-31 | Precooling-free mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106441473A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989802A (en) * | 2017-05-22 | 2017-07-28 | 中国测试技术研究院流量研究所 | A kind of device for improving the cryogenic liquid gauge check degree of accuracy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201461309U (en) * | 2009-07-28 | 2010-05-12 | 北京长征天民高科技有限公司 | Vacuum insulation device and liquefied natural gas vehicle gassing system |
| CN201820463U (en) * | 2010-09-21 | 2011-05-04 | 杭州欧卓净化机械有限公司 | Case of precooler |
| CN105352682A (en) * | 2015-12-14 | 2016-02-24 | 上海雷尼威尔物联网有限公司 | Gas dispenser valve detection device |
| CN205102873U (en) * | 2015-09-07 | 2016-03-23 | 高准有限公司 | Protection device and fluid measurement device for fluid measurement instrument |
| CN105864018A (en) * | 2016-04-05 | 2016-08-17 | 武汉船用机械有限责任公司 | Ultralow-temperature test device suitable for LNG immersed pump |
-
2016
- 2016-08-31 CN CN201610784783.6A patent/CN106441473A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201461309U (en) * | 2009-07-28 | 2010-05-12 | 北京长征天民高科技有限公司 | Vacuum insulation device and liquefied natural gas vehicle gassing system |
| CN201820463U (en) * | 2010-09-21 | 2011-05-04 | 杭州欧卓净化机械有限公司 | Case of precooler |
| CN205102873U (en) * | 2015-09-07 | 2016-03-23 | 高准有限公司 | Protection device and fluid measurement device for fluid measurement instrument |
| CN105352682A (en) * | 2015-12-14 | 2016-02-24 | 上海雷尼威尔物联网有限公司 | Gas dispenser valve detection device |
| CN105864018A (en) * | 2016-04-05 | 2016-08-17 | 武汉船用机械有限责任公司 | Ultralow-temperature test device suitable for LNG immersed pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989802A (en) * | 2017-05-22 | 2017-07-28 | 中国测试技术研究院流量研究所 | A kind of device for improving the cryogenic liquid gauge check degree of accuracy |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170222 |