CN203657863U - Coriolis mass flow meter applicable to high flow - Google Patents
Coriolis mass flow meter applicable to high flow Download PDFInfo
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- CN203657863U CN203657863U CN201420008736.9U CN201420008736U CN203657863U CN 203657863 U CN203657863 U CN 203657863U CN 201420008736 U CN201420008736 U CN 201420008736U CN 203657863 U CN203657863 U CN 203657863U
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- 238000012360 testing method Methods 0.000 claims description 22
- 239000003949 liquefied natural gas Substances 0.000 abstract 2
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 13
- 230000035939 shock Effects 0.000 description 10
- 239000012530 fluid Substances 0.000 description 9
- 238000005452 bending Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010205 computational analysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 papermaking Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a Coriolis mass flow meter applicable to high flow, and belongs to the technical field of LNG (liquefied natural gas) mass flow meters. The Coriolis mass flow meter comprises a sensor portion, the middle of the sensor portion is connected with a transmitter portion, the sensor portion comprises a 'U'-shaped structured case and a 'U'-shaped structured double-row measuring tube, the double-row measuring tube is arranged in the case, two ends of the double-row measuring tube close to end openings are clamped by fixing blocks, coil supports are arranged in the middle and at the two ends of the double-row measuring tube, a driving coil is placed on the coil support positioned in the middle of the double-row measuring tube, and detecting coils are placed on the coil supports positioned at the two ends of the double-row measuring tube. The measuring tube is inverted 'U'-shaped and easily bent, the flow meter is compact in overall structure, the size of the flow meter is reduced, sensitivity to external vibration can be reduced by the aid of the double-tube structure, and phase differences are easily measured.
Description
Technical field
The utility model relates to LNG mass flowmeter, particularly a kind of coriolis mass flowmeters that is applicable to large flow.
Background technology
Coriolis mass flowmeters is a kind of novel instrument of directly and critically measuring fluid mass flow, if when pipe synchronous vibration therein, in fluid ingress pipe, make it along flowing forward in pipe, pipe will force fluid up-down vibration therewith, fluid is in order to revolt this forced vibration, can be to reacting force vertical with its flow direction of pipe, under this effect that is called Coriolis effect power, the vibrations of pipe are asynchronous, there is difference in the time order and function chamber of commerce of vibration in entrance pipe and outlet section pipe, (difference is because entrance and outlet section direction of flow are contrary), it is poor that this is called phase time.This species diversity is directly proportional to the size of the fluid mass flow that flows through pipe; If can detect the size of this time difference by circuit, just the size of mass rate can be given and determined.This flowmeter is known as coriolis mass flowmeters, it and the size that is not both at present in the world the quality that its surveys in the maximum of tens kinds of conventional volumeters of use, and the unit of use is kg/min.With the flowmeter of quality (as kilogram) office than accurate and constant with the volumeter of volume (as liter or cubic meter) office.Coriolis mass flowmeters has accuracy, repeatability, stability, simultaneously in fluid passage, is provided with choked flow element and movable member, thereby its good reliability, and long service life can also be measured the flow of high viscosity fluid and gases at high pressure.At industrial sectors such as oil, chemical industry, metallurgy, building materials, papermaking, medicine, food, bioengineering, the energy, space flight, its application is also more and more extensive.
Wherein coriolis mass flowmeters belongs to LNG aerating metering outfit, and along with the high speed development of LNG technology, higher to the functional requirement of aerating equipment, required occasion increases; The flowmeter cast difference that different flow size is applicable.
Utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, a kind of coriolis mass flowmeters of the LNG of being applicable to aerating metering is provided, particularly be applicable to the LNG aerating metering of large flow (800-1800kg/min), the cast of measuring tube is for falling " U " shape structure, be easy to bending forming, make flowmeter general structure compactness, volume reduces simultaneously; Adopt double pipe structure can reduce the susceptibility of external shock, easily realize the measurement of phase differential.
The technical solution adopted in the utility model is as follows:
The coriolis mass flowmeters that is applicable to large flow of the present utility model, comprise Sensor section, the middle part of described Sensor section is connected with transmitter part, described Sensor section comprises the case and the double measuring tube that are " U " shape structure, described double measuring tube is located in case, the two ends of described double measuring tube adopt fixed block clamping near port, on the middle part of double measuring tube and two ends, be equipped with coil brace, wherein be positioned on the coil brace at double measuring tube middle part and lay drive coil, be positioned on the coil brace at double measuring tube two ends and lay magnetic test coil.
Owing to having adopted said structure, transmitter part is for the driving of Sensor section and the conversion of flow detecting signal, computing and flow indication, signal output etc., and transmitter part mainly contains the partial circuit compositions such as power supply, driving, detection, demonstration; Transmitter part is imported by signal wire the signal recording into transmitter and is carried out data computational analysis, sensor need to carry out work under the condition of airtight isolated air, because the water in the middle of air is met the cold water that becomes and can be attached on measurement tube wall, give measuring tube additional mass, cause working sensor unstable.The measuring tube and the case that wherein form Sensor section are " U " shape structure, be easy to bending forming, make processing very convenient and swift, simultaneously, in " U " shape measuring tube, can pass through the LNG fluid of large flow, at the middle part of double measuring tube, coil brace is installed, on this coil brace, be installed on drive coil, for the vibration of double measuring tube provides power source, therefore the determining positions of this drive coil support the vibration stimulus position of measuring tube; And on the coil brace arranging at the two ends of double measuring tube, can be used for installing detection necklace, two groups of magnetic test coils need mounting magnetic steel and magnetic test coil, measure phase differential at the two ends of locating of measuring tube with electromagnetic principle, just can calculate by transmitter the data such as quality, flow, density.Meanwhile, fixed block carries out clamping position near port to two measuring tubes at the two ends of measuring tube, thereby makes two testing tubes be parallel to each other and form double pipe structure, can reduce the susceptibility of external shock, easily realizes the measurement of phase differential; Two groups of fixed blocks and measuring tube welding, play the effect at fixing two ends, determined length and the vibration frequency of measuring tube vibrations ends; Adopt double pipe structure can reduce the susceptibility of external shock, easily realize the measurement of phase differential.
The coriolis mass flowmeters that is applicable to large flow of the present utility model, the two ends of described double measuring tube are parallel to each other, and are the mouth of pipe angle of a=90 ° between the two ends of described double measuring tube and port surface; Between the two ends of described double measuring tube, be cast extended distance S1=350-400mm; The port of described double measuring tube is to the cast height S2=380-430mm between double measuring tube stage casing.
Owing to having adopted said structure, measuring tube two ends are parallel to each other, thereby form double pipe structure, can reduce the susceptibility of external shock, easily realize the measurement of phase differential; Mouth of pipe angle a=90 ° between the two ends of buret and mouth of pipe face, is easy to bending forming, makes processing very convenient and swift; The cast A/F of measuring tube and cast height can have influence on the vibration frequency of measuring tube, therefore need to control cast A/F S1=350-400mm, cast height S2=380-430mm, just can guarantee that measuring tube is under specified vibration frequency, measure phase differential with electromagnetic principle, could calculate by transmitter the data such as quality, flow, density.It is applicable to the LNG aerating metering of large flow (800-1800kg/min).
The coriolis mass flowmeters that is applicable to large flow of the present utility model, described double measuring tube is made up of two testing tubes arranging that are parallel to each other, the test tube gap T=2-8mm between two testing tubes.
Owing to having adopted said structure, measuring tube two ends are parallel to each other, and test tube gap between two measuring tubes is side by side 2-8mm, thereby form double pipe structure, can reduce the susceptibility of external shock, easily realize the measurement of phase differential.
The coriolis mass flowmeters that is applicable to large flow of the present utility model, is connected by connecting rod between described Sensor section and transmitter part, and described connecting rod is provided with heat absorbing sheet.
Owing to having adopted said structure, in the time that LNG passes through Sensor section, Sensor section temperature sharply declines, low temperature can be by the gas transfer of connecting rod and sensor internal to transmitter part, first connecting rod has certain length and makes transmitter spatially in the time that, low temperature transmits, just have partial loss with Sensor section; Heat absorbing sheet is made up of aluminium alloy, large with normal temperature air surface of contact, and according to hot transfer principle, heat absorbing sheet absorbs extraneous heat and is transmitted to rapidly connecting rod, makes the temperature rise of connecting rod, and Conduction At Low Temperature is less than transmitter part like this, and assurance transmitter is normally worked; Under the condition that transmitter can normally be worked, transmitter and sensor can be used as one, take up room little, easy for installation.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1, the coriolis mass flowmeters that is applicable to large flow of the present utility model, simple in structure, and simplified control is easy to use, with low cost, is applicable to the LNG aerating metering of large flow (800 ~ 1800kg/min);
2, the coriolis mass flowmeters that is applicable to large flow of the present utility model, the cast of measuring tube is inverse u shape, is easy to bending forming, makes flowmeter general structure compactness simultaneously, volume reduces; Adopt double pipe structure can reduce the susceptibility of external shock, easily realize the measurement of phase differential.
Accompanying drawing explanation
Fig. 1 is cut-away view of the present utility model;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the left view of Fig. 2.
Mark in figure: 1-measuring tube, 2-fixed block, 3-coil brace, S1-cast A/F, S2-cast height, T-test tube gap, a-mouth of pipe angle.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1 to Figure 3, the coriolis mass flowmeters that is applicable to large flow of the present utility model, comprise Sensor section, the middle part of described Sensor section is connected with transmitter part, described Sensor section comprises the case and the double measuring tube 1 that are " U " shape structure, described double measuring tube 1 is located in case, and the two ends of described double measuring tube 1 are parallel to each other, and is the mouth of pipe angle of a=90 ° between the two ends of described double measuring tube 1 and port surface; Between the two ends of described double measuring tube 1, be 350mm for cast extended distance S1=350-400mm(arranges minimum cast A/F according to actual needs, maximum cast A/F is 400mm, and can in 350-400mm, select cast A/F); It is 380mm that the port of described double measuring tube 1 arranges minimum cast height according to actual needs to the cast height S2=380-430mm(between double measuring tube 1 stage casing, and maximum cast height is 430mm, and can in 380-430mm, select cast height); Described double measuring tube 1 is made up of two testing tubes arranging that are parallel to each other, the minimum measurement clearance of test tube gap T=2-8mm(between two testing tubes is 2mm, maximum test tube gap is 8mm, can in 2-8mm, select test tube gap), can reduce the susceptibility of external shock, easily realize the measurement of phase differential; The two ends of described double measuring tube 1 adopt fixed block 2 to clamp near port, on the middle part of double measuring tube 1 and two ends, be equipped with coil brace 2, wherein be positioned on the coil brace 2 at double measuring tube 1 middle part and lay drive coil, be positioned on the coil brace 2 at double measuring tube 1 two ends and lay magnetic test coil.
Wherein transmitter part is for the driving of Sensor section and the conversion of flow detecting signal, computing and flow indication, signal output etc., and transmitter part mainly contains the partial circuit compositions such as power supply, driving, detection, demonstration; Transmitter part is imported by signal wire the signal recording into transmitter and is carried out data computational analysis, sensor need to carry out work under the condition of airtight isolated air, because the water in the middle of air is met the cold water that becomes and can be attached on measurement tube wall, give measuring tube additional mass, cause working sensor unstable.The measuring tube and the case that wherein form Sensor section are " U " shape structure, be easy to bending forming, make processing very convenient and swift, simultaneously, in " U " shape measuring tube, can pass through the LNG fluid of large flow, at the middle part of double measuring tube, coil brace is installed, on this coil brace, be installed on drive coil, for the vibration of double measuring tube provides power source, therefore the determining positions of this drive coil support the vibration stimulus position of measuring tube; And on the coil brace arranging at the two ends of double measuring tube, can be used for installing detection necklace, two groups of magnetic test coils need mounting magnetic steel and magnetic test coil, measure phase differential at the two ends of locating of measuring tube with electromagnetic principle, just can calculate by transmitter the data such as quality, flow, density.Meanwhile, fixed block carries out clamping position near port to two measuring tubes at the two ends of measuring tube, thereby makes two testing tubes be parallel to each other and form double pipe structure, can reduce the susceptibility of external shock, easily realizes the measurement of phase differential; Two groups of fixed blocks and measuring tube welding, play the effect at fixing two ends, determined length and the vibration frequency of measuring tube vibrations ends; Adopt double pipe structure can reduce the susceptibility of external shock, easily realize the measurement of phase differential; Measuring tube two ends are parallel to each other, thereby form double pipe structure, can reduce the susceptibility of external shock, easily realize the measurement of phase differential; Mouth of pipe angle a=90 ° between the two ends of buret and mouth of pipe face, is easy to bending forming, makes processing very convenient and swift; The cast A/F of measuring tube and cast height can have influence on the vibration frequency of measuring tube, therefore need to control cast A/F S1=350-400mm, cast height S2=380-430mm, just can guarantee that measuring tube is under specified vibration frequency, measure phase differential with electromagnetic principle, could calculate by transmitter the data such as quality, flow, density.
In wherein said Sensor section, between the middle part of case and transmitter part, be connected by connecting rod, described connecting rod is provided with heat absorbing sheet.In the time that LNG passes through Sensor section, Sensor section temperature sharply declines, low temperature can be by the gas transfer of connecting rod and sensor internal to transmitter part, first connecting rod have certain length make transmitter spatially with Sensor section from, low temperature just has partial loss while transmission; Heat absorbing sheet is made up of aluminium alloy, large with normal temperature air surface of contact, and according to hot transfer principle, heat absorbing sheet absorbs extraneous heat and is transmitted to rapidly connecting rod, makes the temperature rise of connecting rod, and Conduction At Low Temperature is less than transmitter part like this, and assurance transmitter is normally worked; Under the condition that transmitter can normally be worked, transmitter and sensor can be used as one, take up room little, easy for installation.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. one kind is applicable to the coriolis mass flowmeters of large flow, it is characterized in that: it comprises Sensor section, the middle part of described Sensor section is connected with transmitter part, described Sensor section comprises the case and the double measuring tube (1) that are " U " shape structure, described double measuring tube (1) is located in case, the two ends of described double measuring tube (1) adopt fixed block (2) clamping near port, on the middle part of double measuring tube (1) and two ends, be equipped with coil brace (2), wherein be positioned on the coil brace (2) at double measuring tube (1) middle part and lay drive coil, be positioned on the coil brace (2) at double measuring tube (1) two ends and lay magnetic test coil.
2. the coriolis mass flowmeters that is applicable to large flow as claimed in claim 1, is characterized in that: the two ends of described double measuring tube (1) are parallel to each other, and is the mouth of pipe angle of a=90 ° between the two ends of described double measuring tube (1) and port surface; Between the two ends of described double measuring tube (1), be cast extended distance S1=350-400mm; The port of described double measuring tube (1) is to the cast height S2=380-430mm between double measuring tube (1) stage casing.
3. the coriolis mass flowmeters that is applicable to large flow as claimed in claim 2, is characterized in that: described double measuring tube (1) is made up of two testing tubes arranging that are parallel to each other, the test tube gap T=2-8mm between two testing tubes.
4. the coriolis mass flowmeters that is applicable to large flow as claimed in claim 3, is characterized in that: between described Sensor section and transmitter part, be connected by connecting rod, described connecting rod is provided with heat absorbing sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420008736.9U CN203657863U (en) | 2014-01-07 | 2014-01-07 | Coriolis mass flow meter applicable to high flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420008736.9U CN203657863U (en) | 2014-01-07 | 2014-01-07 | Coriolis mass flow meter applicable to high flow |
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| Publication Number | Publication Date |
|---|---|
| CN203657863U true CN203657863U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420008736.9U Expired - Lifetime CN203657863U (en) | 2014-01-07 | 2014-01-07 | Coriolis mass flow meter applicable to high flow |
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| CN (1) | CN203657863U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296816A (en) * | 2014-10-24 | 2015-01-21 | 成都安迪生测量有限公司 | Small liquid flow meter |
| CN104296811A (en) * | 2014-10-24 | 2015-01-21 | 成都安迪生测量有限公司 | Mass-flow liquid flowmeter |
| CN107290014A (en) * | 2016-03-31 | 2017-10-24 | 高准有限公司 | Mass flow meter devices and process control equipment |
-
2014
- 2014-01-07 CN CN201420008736.9U patent/CN203657863U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296816A (en) * | 2014-10-24 | 2015-01-21 | 成都安迪生测量有限公司 | Small liquid flow meter |
| CN104296811A (en) * | 2014-10-24 | 2015-01-21 | 成都安迪生测量有限公司 | Mass-flow liquid flowmeter |
| CN107290014A (en) * | 2016-03-31 | 2017-10-24 | 高准有限公司 | Mass flow meter devices and process control equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHENGDU ANDISOON PRECISION MEASUREMENT TECHNOLOGY Free format text: FORMER OWNER: CHENGDU ANDERSON MEASUREMENT CO., LTD. Effective date: 20150810 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150810 Address after: 610000 Sichuan, Shuangliu County, Southwest Airport Economic Development Zone, the Internet of things Industrial Park Patentee after: CHENGDU ANDISHENG PRECISION TECHNOLOGY Co.,Ltd. Address before: 610041 Sichuan city of Chengdu province high tech Zone Century City Road No. 216 Tianfu Software Park D District 6 Building No. 1103 Patentee before: CHENGDU ANDERSON MEASUREMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |