CN104406645A - Mass flow sensor - Google Patents
Mass flow sensor Download PDFInfo
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- CN104406645A CN104406645A CN201410642655.9A CN201410642655A CN104406645A CN 104406645 A CN104406645 A CN 104406645A CN 201410642655 A CN201410642655 A CN 201410642655A CN 104406645 A CN104406645 A CN 104406645A
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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
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Abstract
The invention relates to a mass flow sensor. The mass flow sensor comprises a first measuring pipe and a second measuring pipe, wherein the two measuring pipes are identical in structure and size and are arranged in a shell in parallel, an angle formed between the axis of a straight pipe section of each measuring pipe and the axis of a first oblique pipe section and an angle formed between the axis of the first oblique pipe section and the axis of a first port section are respectively of an obtuse angle, and an angle formed between the axis of the straight pipe section and the axis of a second oblique pipe section and an angle formed between the axis of the second oblique pipe section and the axis of a second port section are respectively of an obtuse angle. By adopting the technical scheme, when the mass flow of compressed natural gas is measured, the resistance to the compressed natural gas can be reduced; moreover, the distance can be firmly controlled, and a compressed natural gas circulation measuring pipe is enabled to have a high mechanical quality factor, good stability and high shock resistance.
Description
Technical field
The present invention relates to Compressed Natural Gas Technology field, in particular to a kind of mass rate mass flow sensor for measuring compressed natural gas.
Background technology
Rock gas has the following advantages as energy utilization: first, and rock gas is a kind of high-quality green energy resource, and its fire row, high-volume far below coal and oil, can reduce the pollution to environment; Secondly, rock gas is a kind of safety energy, and not containing carbon monoxide in its component, can reduce the harm because the problems such as leakage cause people and animals, rock gas ignition temperature is high simultaneously, explosion limit is narrow, therefore security is good; 3rd, gas storage aboundresources, cost of exploration & development is low.Based on above advantage, rock gas plays more and more important effect in new energy development.At present, compressed natural gas (Compressed Natural Gas, be called for short CNG) be just widely used in the fields such as electric power, chemical industry, gas, especially rock gas power vehicle, the states such as the U.S., Russia, Japan, New Zealand, Australia, Canada are all carrying out energetically.Along with the increasingly extensive application of CNG, in trade process, the accurate-metering of CNG is directly connected to the economic interests of trade both sides.
CNG filling machine internal gas pressure is generally at more than 20MPa, and high pressure can change the sensitive element of metering outfit, and then affects its meter characteristic.In addition, because CNG density is less, require higher to the measuring accuracy of metering outfit.The above feature of CNG determines its metering method and is different from common fluid metering.The current method that can realize high-pressure gas flow measurement mainly contains several mode of ultrasonic flow meter, thermal flowmeter and Coriolis mass flowmeter:
Ultrasonic flowmeter is to the instrument of the work of supersonic beam (or ultrasonic pulse) in order to measuring flow by test fluid flowing.Because instrument circulation passage does not arrange any barrier member, all belong to without hindrance flowmeter, can non-contact measurement be done, without crushing.But the pipeline flow that ultrasonic wave measuring method is not generally suitable for below 25mm bore is at present measured, and usable range is limited.
Thermal mass flow meter utilizes heat transfer theory, the fluid namely in flowing and between thermal source (object heated in fluid or the additional hot body of measuring tube) heat exchange relationship carry out the instrument of measuring flow, there is the features such as crushing is little, structure is simple.But its response time is long, be not suitable with measurement of fluid flow jumpy.
Coriolis mass flowmeter (Coriolis Mass Flowmeter, be called for short CMF) be a kind of resonant transducer, the liquid mass flow flowing through pipeline is measured in the impact of the coriolis effect produced when utilizing fluid to flow through its vibrating conduit on pipe ends vibration phase or amplitude, can direct sensitive fluid mass rate, there is the features such as precision is high, crushing is little, measuring multiple parameters, be widely used in commercial measurement and process control field.Compared with thermal mass flow meter, its outstanding advantage is that range ratio is large, can meet the demand of different occasion.CNG filling machine domestic at present adopt mostly Coriolis mass flowmeter measure.
In CNG gas station, in its fueling process, the pressure of gas, temperature, density and flow velocity are all in rapid change, and the gas componant of rock gas in different time different location is different, therefore has some flowmeters to be not suitable for doing metering outfit in this case.Adopt at present both at home and abroad extensively Coriolis mass flowmeter as the metering outfit of CNG filling machine, SITRANS FCS200 type that the CNGmass series that CNG050 type, German grace Si Haosi company (E+H) that typical apply is produced as the U.S.'s high quasi-corporation (Micro Motion) produce, Siemens Company (SIEMENS) produce etc.
Wherein common Coriolis mass sensor is when utilizing fluid to flow in vibrating tube, carries out measurement quality flow by producing the principle of Coriolis force that is directly proportional to mass rate.At present, people generally adopt vibration tube-type coriolis mass flow sensor (as Fig. 1), and primarily of sensing unit and secondary instrument composition, wherein sensing unit a comprises measuring tube a1, a2, driver a5 and vibro-pickup a3, a4; Secondary instrument b comprises Closed Loop Control Unit b1 and flow solving unit b2, is control and the signal processing system of sensing unit respectively.Sensing unit exports the vibration signal relevant to measured flux; Closed Loop Control Unit b1 provides accumulation signal to driver a5, makes measuring tube maintain resonant condition, and carries out real-time follow-up to the vibration frequency of measuring tube a1, a2; The output signal of flow solving unit b2 to sensor vibro-pickup a3, a4 processes and exports metrical information, therefrom determines mass rate and the density of detected fluid.
The sensor, owing to adopting the U-tube that flexibility is very large, can produce larger resistance, and spacing element is few to the flowing of compressed natural gas, is difficult to ensure higher mechanical quality factor, preferably stability and stronger shock resistance.
Summary of the invention
Technical matters to be solved by this invention is, how when measuring the mass rate of compressed natural gas, reduce the resistance that compressed natural gas is caused, and can spacing securely, ensure that the measuring tube of compressed natural gas circulation has higher mechanical quality factor, preferably stability and stronger shock resistance.
For this purpose, the present invention proposes a kind of mass flow sensor, for measuring the mass rate of compressed natural gas, comprise: the first measuring tube and the second measuring tube, described first measuring tube is identical with described second measuring tube structure, and size is equal, is set in parallel in shell, wherein, every root measuring tube comprises straight length, first arc section, second arc section, three-arc section, 4th arc section, first inclined tube section, second inclined tube section, first segment port and the second segment port, wherein, the first arc section, first inclined tube section, three-arc section, first segment port respectively with the second arc section, second inclined tube section, 4th arc section, second segment port is with plane symmetry that is vertical and decile straight length, first arc section is connected to straight length, first inclined tube section is connected to the first arc section, three-arc section is connected to the first inclined tube section, and the first segment port is connected to three-arc section, and the second arc section is connected to straight length, second inclined tube section is connected to the second arc section, 4th arc section is connected to the second inclined tube section, and the second segment port is connected to the 4th arc section, the angle of straight length place axis and the first inclined tube section place axis, the angle of the first inclined tube section place axis and the first segment port place axis is obtuse angle, the angle of straight length place axis and the second inclined tube section place axis, the angle of the second inclined tube section place axis and the second segment port place axis is obtuse angle, driver, is arranged at the straight length of the first measuring tube with the straight length of the second measuring tube and in the plane of vertical and decile straight length, first detecting device, is arranged at the first arc section of the first measuring tube and the second measuring tube and the connecting portion of the first inclined tube section, second detecting device, is arranged at the second arc section of the first measuring tube and the second measuring tube and the connecting portion of the second inclined tube section, first shunt, is arranged at housing exterior, is connected with the first segment port, second shunt, is arranged at housing exterior, is connected with the second segment port, first nut, is arranged at housing exterior, is connected to the first shunt, second nut, is arranged at housing exterior, is connected to the second shunt.
Preferably, described driver comprises coil, magnet steel and fixed support, and coil and magnet steel are coaxially arranged, and fixed support is welded in the first measuring tube and the second measuring tube respectively by soldering.
Preferably, described first detecting device and the second detecting device comprise coil, magnet steel and fixed support respectively, and coil and magnet steel are coaxially arranged, and fixed support is welded in the first measuring tube and the second measuring tube respectively by soldering.
Preferably, also comprise: the first distance plate, be arranged at the connecting portion of the first segment port and three-arc section on the first measuring tube and the second measuring tube; Second distance plate, is arranged at the connecting portion of three-arc section and the first inclined tube section on the first measuring tube and the second measuring tube; 3rd distance plate, is arranged at the connecting portion of the second segment port and the 4th arc section on the first measuring tube and the second measuring tube; 4th distance plate, is arranged at the connecting portion of the 4th arc section and the second inclined tube section on the first measuring tube and the second measuring tube.
Preferably, also comprise: the first reinforcing sleeve, be arranged at the first segment port of the first measuring tube and the connecting portion of the first shunt; Second reinforcing sleeve, is arranged at the second segment port of the first measuring tube and the connecting portion of the second shunt; 3rd reinforcing sleeve, is arranged at the first segment port of the second measuring tube and the connecting portion of the first shunt; 4th reinforcing sleeve, is arranged at the second segment port of the second measuring tube and the connecting portion of the second shunt.
Preferably, described first shunt is connected with described first reinforcing sleeve and the 3rd reinforcing sleeve by argon arc welding, described second shunt is connected with described second reinforcing sleeve and the 4th reinforcing sleeve by argon arc welding, described first reinforcing sleeve, the second reinforcing sleeve are by Welding extremely described first measuring tube, described 3rd reinforcing sleeve and the 4th reinforcing sleeve are by Welding to described second measuring tube, and described first shunt and the second shunt are soldered to described shell by argon arc welding.
Preferably, also comprise: temperature sensor and fixture, described fixture is used for described temperature sensor to be fixed on described first distance plate.
Preferably, also comprise: brace summer, be arranged between the first measuring tube and the second measuring tube, two ends are soldered to the first shunt and the second shunt by argon arc welding, and parallel with the second measuring tube with described first measuring tube, for wire that is fixing and supporting outer inside.
Preferably, also comprise: connecting pipe and adapting flange, described connecting pipe is for connecting described shell and described adapting flange, and described adapting flange is by rubber column and connect bolt seal.
Preferably, also comprising: pressure switch, be arranged at the upper surface of described shell, for detecting the pressure of enclosure, and sending information when pressure is greater than threshold value of warning.
Preferably, the side of described shell is provided with groove.
Pass through technique scheme, when measuring the mass rate of compressed natural gas, the resistance that compressed natural gas is caused can be reduced, and can spacing securely, ensure that the measuring tube of compressed natural gas circulation has higher mechanical quality factor, preferably stability and stronger shock resistance.
Accompanying drawing explanation
Can understanding the features and advantages of the present invention clearly by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the present invention, in the accompanying drawings:
Fig. 1 shows the structural representation of mass flow sensor in prior art;
It is the structural representation of the mass flow sensor of embodiment that Fig. 2 shows according to the present invention one;
It is the front elevation of the mass flow sensor of embodiment that Fig. 3 shows according to the present invention one;
It is the vertical view of the mass flow sensor of embodiment that Fig. 4 shows according to the present invention one;
It is the structural representation of measuring tube in the mass flow sensor of embodiment that Fig. 5 shows according to the present invention one;
It is the schematic diagram of detecting device and driver in the mass flow sensor of embodiment that Fig. 6 shows according to the present invention one;
It is the schematic diagram of distance plate in the mass flow sensor of embodiment that Fig. 7 shows according to the present invention one;
It is that in the mass flow sensor of embodiment, distance plate and measuring tube install relation schematic diagram that Fig. 8 shows according to the present invention one;
It is the schematic diagram of fixture in the mass flow sensor of embodiment that Fig. 9 shows according to the present invention one;
It is that in the mass flow sensor of embodiment, fixture and distance plate install relation schematic diagram that Figure 10 shows according to the present invention one;
It is the shell side schematic surface of the mass flow sensor of embodiment that Figure 11 shows according to the present invention one.
Drawing reference numeral illustrates:
1-first measuring tube; 2-second measuring tube; 3-driver; 4-first detecting device; 5-second detecting device; 6-first distance plate; 7-second distance plate; 8-the 3rd distance plate; 9-the 4th distance plate; 10-first nut; 11-second nut; 12-first shunt; 13-second shunt; 14-first reinforcing sleeve; 15-second reinforcing sleeve; 16-the 3rd reinforcing sleeve; 17-the 4th reinforcing sleeve; 18-brace summer; 19-connecting pipe; 20-adapting flange; 21-fixture; 22-shell; 23-pressure switch; 24-straight length; 25-first arc section; 26-second arc section; 27-first inclined tube section; 28-second inclined tube section; 29-three-arc section; 30-the 4th arc section; 31-first segment port; 32-second segment port; 34-shell.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
As shown in Figures 2 and 3, according to the mass flow sensor that the present invention one is embodiment, for measuring the mass rate of compressed natural gas, comprise: the first measuring tube 1 is identical with the second measuring tube 2 structure with the second measuring tube 2, first measuring tube 1, and size is equal, be set in parallel in shell 34, wherein, as shown in Figure 5, every root measuring tube comprises straight length 24, first arc section 25, second arc section 26, three-arc section 29, 4th arc section 30, first inclined tube section 27, second inclined tube section 28, first segment port 31 and the second segment port 32, wherein, the first arc section 25, first inclined tube section 27, three-arc section 29, first segment port 31 respectively with the second arc section 26, second inclined tube section 28, 4th arc section 30, second segment port 32 is with plane symmetry that is vertical and decile straight length 24, first arc section 25 is connected to straight length 24, first inclined tube section 27 is connected to the first arc section 25, three-arc section 29 is connected to the first inclined tube section 27, first segment port 31 is connected to three-arc section 29, second arc section 26 is connected to straight length 24, second inclined tube section 28 is connected to the second arc section 30, 4th arc section 30 is connected to the second inclined tube section 28, second segment port 32 is connected to the 4th arc section 30, the angle of straight length 24 place axis and the first inclined tube section 27 place axis, the angle of the first inclined tube section 27 place axis and the first segment port 31 place axis is obtuse angle, the angle of straight length 24 place axis and the second inclined tube section 28 place axis, the angle of the second inclined tube section 28 place axis and the second segment port 32 place axis is obtuse angle, as shown in Figure 6, also comprise: driver 3, be arranged at the straight length 24 of the first measuring tube 1 with the straight length of the second measuring tube 2 and in the plane of vertical and decile straight length 24, first detecting device 4, is arranged at the first arc section 25 of the first measuring tube 1 and the second measuring tube 2 and the connecting portion of the first inclined tube section 27, second detecting device 5, is arranged at the second arc section 26 of the first measuring tube 1 and the second measuring tube 2 and the connecting portion of the second inclined tube section 28, first shunt 12, is arranged at shell 34 outside, is connected with the first segment port 31, second shunt 13, is arranged at shell 34 outside, is connected with the second segment port 32, first nut 10, is arranged at shell 34 outside, is connected to the first shunt 12, second nut 11, is arranged at shell 34 outside, is connected to the second shunt 13.
According to Coriolis effect, two measuring tubes adopt the fixing welding in measuring tube both sides of dual distance plate, and two measuring tubes are welded on the outer face of shunt abreast, securely, form a tuning fork, to eliminate the impact of extraneous vibration.Two measuring tubes are under the incentive action of electromagnetic driver, and with its natural frequency vibration, vibration phase is contrary.Due to the yo-yo effect of measuring tube, obtain a Coriolis acceleration at each fluid micellar of Bottomhole pressure, measuring tube is just subject to the contrary distribution coriolis force in acceleration direction therewith.Contrary into and out of the coriolis force direction suffered by both sides due to measuring tube, and measuring tube is twisted, its torsion degree is directly proportional with the interior instantaneous mass flow of pipe.The influent stream side being arranged in measuring tube and two electromagnetic detectors going out to flow side often vibrate the process of a week at tuning fork, detect two-way vibration signal, the phase differential of two paths of signals and the degree of rocking of detector tube, namely instantaneous delivery is directly proportional.By calculating the phase differential between signal, mass rate can be calculated.
Because the axis angle of straight length and inclined tube section is obtuse angle, and the axis angle of inclined tube section and segment port is obtuse angle, and connected by arc section between any two, excess smoothness, when compressed natural gas flows from measuring tube, can not cause larger resistance to compressed natural gas, and effectively improve performance and the mechanical quality factor of resonant transducer, substantially reduce that flow, resistance to flow are little, low pressure loss, can the mass rate of mensurated gas composition, processing is simple, cost is low.
The tubing of two measuring tubes can adopt 316L stainless steel, titanium, Hastelloy, can certainly select the tubing of other material as required.Measuring tube can be integrally formed, and also can be to be assembled by straight length, arc section and inclined tube section.
When the non-flows through sensor of fluid, vibrator excitation measuring tube is with its natural frequency vibration, and now, measuring tube entrance side is identical with the sinusoidal signal frequency that two detecting devices of outlet side detect and phase place, without phase differential.Because measuring tube is now blank pipe, the resonance frequency of measuring tube is density benchmark frequency, and namely without frequency during fluid, the real-time density recorded and liquid mass flow numerical value are 0.When fluid flows through sensor, first, the flowing of measuring tube inner fluid causes the appearance of coriolis effect, measuring tube two ends are subject to the contrary distribution coriolis force in equal and opposite in direction direction due to the impact of moment, show as between sinusoidal signal that two detecting devices detect and there is phase differential, this phase differential is directly proportional to the mass rate of fluid, can obtain the real-time quality flow of fluid by detecting this phase differential size.
Preferably, driver 3 comprises coil, magnet steel and fixed support, and coil and magnet steel are coaxially arranged, and fixed support is welded in the first measuring tube 1 and the second measuring tube 2 respectively by soldering.Driver vibrates for encouraging measuring tube, by closed-loop control system, makes measuring tube be in simple harmonic oscillation state, makes sensor with its natural frequency vibration.
Preferably, the first detecting device 4 and the second detecting device 6 comprise coil, magnet steel and fixed support respectively, and coil and magnet steel are coaxially arranged, and fixed support is welded in the first measuring tube 1 and the second measuring tube 2 respectively by soldering.
Driver and detecting device by coil and magnet steel with the use of, driver is arranged on the central axis place of the middle straight pipeline section of two relative measurement pipes, detecting device is positioned at the junction that the Part I circular arc pipeline section of measuring tube and inclined tube section seamlessly transit, and detecting device installation in outward direction.The closed-loop system that common formation is good, makes the detector tube of sensor have stable duty, and reduces the impact of external disturbance, improves capacity of self-regulation.
As shown in Figure 8, preferably, also comprise: the first distance plate 6, be arranged at the connecting portion of the first segment port 31 and three-arc section 29 on the first measuring tube 1 and the second measuring tube 2; Second distance plate 7, is arranged at the connecting portion of three-arc section 29 and the first inclined tube section 27 on the first measuring tube 1 and the second measuring tube 2; 3rd distance plate 8, is arranged at the connecting portion of the second segment port 32 and the 4th arc section 30 on the first measuring tube 1 and the second measuring tube 2; 4th distance plate 9, is arranged at the connecting portion of the 4th arc section 30 and the second inclined tube section 28 on the first measuring tube 1 and the second measuring tube 2.
As shown in Figure 7, four distance plates are made up of two E templates all respectively, two distance plates are positioned at the arc section of measuring tube and smooth connection place of segment port, two distance plates are positioned at the inclined tube section of measuring tube and smooth connection place of arc section, realize dual spacing pattern respectively by two groups of distance plates, such that the resonance frequency of measuring tube is higher, good stability, shock resistance are strong.And each distance plate is also provided with some through holes, so that enclosure circuit passes, is conducive to internal wiring and lays.
Distance plate fixes two measuring tubes by the mode of vacuum brazing simultaneously, measuring tube is not easily deformed, and make the characteristic of two measuring tubes as far as possible identical, limited torsion needed for flow measurement is provided simultaneously and bends, by changing the resonance frequency that can change sensor of dual distance plate in straight length position, therefore can determine according to designed frequency that dual distance plate is in the position of straight length, to reduce the vibration coupling of internal measurement pipe, and strengthens the shock resistance of measuring tube.
Preferably, also comprise: the first reinforcing sleeve 14, be arranged at the first segment port 31 of the first measuring tube 1 and the connecting portion of the first shunt 12; Second reinforcing sleeve 15, is arranged at the second segment port 32 of the first measuring tube 1 and the connecting portion of the second shunt 13; 3rd reinforcing sleeve 16, is arranged at the first segment port 31 of the second measuring tube 2 and the connecting portion of the first shunt 12; 4th reinforcing sleeve 17, is arranged at the second segment port 32 of the second measuring tube 2 and the connecting portion of the second shunt 13.
Preferably, first shunt 12 is connected with the first reinforcing sleeve 14 and the 3rd reinforcing sleeve 16 by argon arc welding, second shunt 13 is connected with the second reinforcing sleeve 15 and the 4th reinforcing sleeve 17 by argon arc welding, first reinforcing sleeve 14, second reinforcing sleeve 15 is by Welding to the first measuring tube 1,3rd reinforcing sleeve 16 and the 4th reinforcing sleeve 17 are by Welding to the second measuring tube, and 2 first shunts 12 and the second shunt 13 are soldered to shell 34 by argon arc welding.
As shown in Figure 9 and Figure 10, preferably, also comprise: temperature sensor (not shown) and fixture 21, fixture 21 is for being fixed on the first distance plate 6 by temperature sensor.
Temperature sensor can directly be fixed on distance plate by temperature sensor fixture, can the more change of temperature in direct feeling sensor, thus obtains the influence value more close with actual temperature in detector tube, to improve subsequent treatment precision.
As shown in Figure 4, preferably, also comprise: brace summer 18, be arranged between the first measuring tube 1 and the second measuring tube 2, two ends are soldered to the first shunt 12 and the second shunt 13 by argon arc welding, and parallel with the second measuring tube 2 with the first measuring tube 1, for wire that is fixing and supporting outer 34 inside.Be used for fixing by brace summer and support each wire, making cabling convenient, be convenient to the regular of enclosure structure and simplify.
Preferably, also comprise: connecting pipe 19 and adapting flange 20, connecting pipe 19 is for connected with outer casing 34 and adapting flange 20, and adapting flange 20 is by rubber column and connect bolt seal.Seal by rubber column and the mode connecting bolt compresses the method that connects to connect, can sealing effectiveness be improved, and the comfort level of installing.
Preferably, also comprising: pressure switch 23, be arranged at the upper surface of shell 34, for detecting the pressure of shell 34 inside, and sending information when pressure is greater than threshold value of warning.By setting pressure switch on described sensor outer housing, the pressure change of detecting sensor enclosure, can carry out timely early warning when internal pressure is larger, prevent sensor degradation.
As shown in figure 11, preferably, the side of shell 34 is provided with groove, can increase the bulk strength of shell.Shell 34 specifically can be divided into shell and lower casing two parts, so that dismounting and installation.
More than be described with reference to the accompanying drawings technical scheme of the present invention, consider in correlation technique, adopt the U-tube that flexibility is very large, flowing for compressed natural gas can produce larger resistance, and spacing element is few, be difficult to ensure higher mechanical quality factor, preferably stability and stronger shock resistance.By the technical scheme of the application, when measuring the mass rate of compressed natural gas, the resistance that compressed natural gas is caused can be reduced, and can spacing securely, ensure that the measuring tube of compressed natural gas circulation has higher mechanical quality factor, stability is stronger preferably shock resistance.
In the present invention, term " first ", " second ", " the 3rd ", " the 4th " only for describing object, and can not be interpreted as instruction or hint relative importance.Term " multiple " refers to two or more, unless otherwise clear and definite restriction.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a mass flow sensor, for measuring the mass rate of compressed natural gas, is characterized in that, comprising:
First measuring tube and the second measuring tube, described first measuring tube is identical with described second measuring tube structure, and size is equal, is set in parallel in shell, and wherein, every root measuring tube comprises straight length, first arc section, second arc section, three-arc section, 4th arc section, first inclined tube section, second inclined tube section, first segment port and the second segment port, wherein, the first arc section, first inclined tube section, three-arc section, first segment port respectively with the second arc section, second inclined tube section, 4th arc section, second segment port is with plane symmetry that is vertical and decile straight length, first arc section is connected to straight length, first inclined tube section is connected to the first arc section, three-arc section is connected to the first inclined tube section, and the first segment port is connected to three-arc section, and the second arc section is connected to straight length, second inclined tube section is connected to the second arc section, 4th arc section is connected to the second inclined tube section, and the second segment port is connected to the 4th arc section, the angle of straight length place axis and the first inclined tube section place axis, the angle of the first inclined tube section place axis and the first segment port place axis is obtuse angle, the angle of straight length place axis and the second inclined tube section place axis, the angle of the second inclined tube section place axis and the second segment port place axis is obtuse angle,
Driver, is arranged at the straight length of the first measuring tube with the straight length of the second measuring tube and in the plane of vertical and decile straight length;
First detecting device, is arranged at the first arc section of the first measuring tube and the second measuring tube and the connecting portion of the first inclined tube section;
Second detecting device, is arranged at the second arc section of the first measuring tube and the second measuring tube and the connecting portion of the second inclined tube section;
First shunt, is arranged at housing exterior, is connected with the first segment port;
Second shunt, is arranged at housing exterior, is connected with the second segment port;
First nut, is arranged at housing exterior, is connected to the first shunt;
Second nut, is arranged at housing exterior, is connected to the second shunt.
2. mass flow sensor according to claim 1, it is characterized in that, described driver comprises coil, magnet steel and fixed support, and coil and magnet steel are coaxially arranged, and fixed support is welded in the first measuring tube and the second measuring tube respectively by soldering.
3. mass flow sensor according to claim 1, it is characterized in that, described first detecting device and the second detecting device comprise coil, magnet steel and fixed support respectively, and coil and magnet steel are coaxially arranged, and fixed support is welded in the first measuring tube and the second measuring tube respectively by soldering.
4. mass flow sensor according to claim 1, is characterized in that, also comprise:
First distance plate, is arranged at the connecting portion of the first segment port and three-arc section on the first measuring tube and the second measuring tube;
Second distance plate, is arranged at the connecting portion of three-arc section and the first inclined tube section on the first measuring tube and the second measuring tube;
3rd distance plate, is arranged at the connecting portion of the second segment port and the 4th arc section on the first measuring tube and the second measuring tube;
4th distance plate, is arranged at the connecting portion of the 4th arc section and the second inclined tube section on the first measuring tube and the second measuring tube.
5. mass flow sensor according to claim 1, is characterized in that, also comprise:
First reinforcing sleeve, is arranged at the first segment port of the first measuring tube and the connecting portion of the first shunt;
Second reinforcing sleeve, is arranged at the second segment port of the first measuring tube and the connecting portion of the second shunt;
3rd reinforcing sleeve, is arranged at the first segment port of the second measuring tube and the connecting portion of the first shunt;
4th reinforcing sleeve, is arranged at the second segment port of the second measuring tube and the connecting portion of the second shunt.
6. mass flow sensor according to claim 5, it is characterized in that, described first shunt is connected with described first reinforcing sleeve and the 3rd reinforcing sleeve by argon arc welding, described second shunt is connected with described second reinforcing sleeve and the 4th reinforcing sleeve by argon arc welding, described first reinforcing sleeve, second reinforcing sleeve is by Welding extremely described first measuring tube, described 3rd reinforcing sleeve and the 4th reinforcing sleeve are by Welding extremely described second measuring tube, described first shunt and the second shunt are soldered to described shell by argon arc welding, and the side surface of described shell is provided with groove.
7. mass flow sensor according to claim 1, is characterized in that, also comprise: temperature sensor and fixture, and described fixture is used for described temperature sensor to be fixed on described first distance plate.
8. mass flow sensor according to claim 1, it is characterized in that, also comprise: brace summer, be arranged between the first measuring tube and the second measuring tube, two ends are soldered to the first shunt and the second shunt by argon arc welding, and parallel with the second measuring tube with described first measuring tube, for wire that is fixing and supporting outer inside.
9. mass flow sensor according to any one of claim 1 to 8, is characterized in that, also comprises:
Connecting pipe and adapting flange, described connecting pipe is for connecting described shell and described adapting flange, and described adapting flange is by rubber column and connect bolt seal.
10. mass flow sensor according to any one of claim 1 to 8, is characterized in that, also comprises:
Pressure switch, is arranged at the upper surface of described shell, for detecting the pressure of enclosure, and sends information when pressure is greater than threshold value of warning.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410642655.9A CN104406645A (en) | 2014-11-07 | 2014-11-07 | Mass flow sensor |
| PCT/CN2015/072899 WO2016070527A1 (en) | 2014-11-07 | 2015-02-12 | Mass flow sensor |
| CA2966940A CA2966940A1 (en) | 2014-11-07 | 2015-02-12 | Mass flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410642655.9A CN104406645A (en) | 2014-11-07 | 2014-11-07 | Mass flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104406645A true CN104406645A (en) | 2015-03-11 |
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ID=52644292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410642655.9A Pending CN104406645A (en) | 2014-11-07 | 2014-11-07 | Mass flow sensor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104406645A (en) |
| CA (1) | CA2966940A1 (en) |
| WO (1) | WO2016070527A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379532A (en) * | 2018-12-29 | 2020-07-07 | 中国石油大学(华东) | Flow monitoring device and drilling equipment |
| CN113108855A (en) * | 2021-04-13 | 2021-07-13 | 合肥精大仪表股份有限公司 | Mass flow meter based on Coriolis principle |
| WO2023165045A1 (en) * | 2022-03-02 | 2023-09-07 | 沃森测控技术（河北）有限公司 | Coriolis mass flowmeter using built-in supporting structure |
| WO2024119647A1 (en) * | 2022-12-06 | 2024-06-13 | 沃森测控技术（河北）有限公司 | Multi-flow-tube coriolis flowmeter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858765A (en) * | 2010-05-24 | 2010-10-13 | 北京航空航天大学 | Quasi-linear tube Coriolis mass flowmeter |
| CN203132621U (en) * | 2012-12-26 | 2013-08-14 | 重庆川仪自动化股份有限公司 | Coriolis mass flowmeter and measuring tube thereof |
| CN103370605A (en) * | 2011-02-23 | 2013-10-23 | 微动公司 | Vibrating flow meter and method for measuring temperature |
| US20140144250A1 (en) * | 2012-11-28 | 2014-05-29 | Golden Promise Equipment Inc. | Coriolis mass flow meter with micro-bend tubes |
| CN103900652A (en) * | 2012-12-28 | 2014-07-02 | 上海一诺仪表有限公司 | Multi-runner Coriolis mass flowmeter sensor fluid main part |
| CN104101394A (en) * | 2014-07-31 | 2014-10-15 | 北京天辰博锐科技有限公司 | Coriolis mass flow sensor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6308580B1 (en) * | 1999-03-19 | 2001-10-30 | Micro Motion, Inc. | Coriolis flowmeter having a reduced flag dimension |
| US6711958B2 (en) * | 2000-05-12 | 2004-03-30 | Endress + Hauser Flowtec Ag | Coriolis mass flow rate/density/viscoy sensor with two bent measuring tubes |
| WO2014094197A1 (en) * | 2012-12-17 | 2014-06-26 | Micro Motion, Inc. | Improved case for a vibrating meter |
| CN204177431U (en) * | 2014-11-07 | 2015-02-25 | 加拿大沃森实业有限公司 | A kind of mass flow sensor |
-
2014
- 2014-11-07 CN CN201410642655.9A patent/CN104406645A/en active Pending
-
2015
- 2015-02-12 CA CA2966940A patent/CA2966940A1/en not_active Abandoned
- 2015-02-12 WO PCT/CN2015/072899 patent/WO2016070527A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858765A (en) * | 2010-05-24 | 2010-10-13 | 北京航空航天大学 | Quasi-linear tube Coriolis mass flowmeter |
| CN103370605A (en) * | 2011-02-23 | 2013-10-23 | 微动公司 | Vibrating flow meter and method for measuring temperature |
| US20140144250A1 (en) * | 2012-11-28 | 2014-05-29 | Golden Promise Equipment Inc. | Coriolis mass flow meter with micro-bend tubes |
| CN203132621U (en) * | 2012-12-26 | 2013-08-14 | 重庆川仪自动化股份有限公司 | Coriolis mass flowmeter and measuring tube thereof |
| CN103900652A (en) * | 2012-12-28 | 2014-07-02 | 上海一诺仪表有限公司 | Multi-runner Coriolis mass flowmeter sensor fluid main part |
| CN104101394A (en) * | 2014-07-31 | 2014-10-15 | 北京天辰博锐科技有限公司 | Coriolis mass flow sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379532A (en) * | 2018-12-29 | 2020-07-07 | 中国石油大学(华东) | Flow monitoring device and drilling equipment |
| CN113108855A (en) * | 2021-04-13 | 2021-07-13 | 合肥精大仪表股份有限公司 | Mass flow meter based on Coriolis principle |
| WO2023165045A1 (en) * | 2022-03-02 | 2023-09-07 | 沃森测控技术（河北）有限公司 | Coriolis mass flowmeter using built-in supporting structure |
| WO2024119647A1 (en) * | 2022-12-06 | 2024-06-13 | 沃森测控技术（河北）有限公司 | Multi-flow-tube coriolis flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2966940A1 (en) | 2016-05-12 |
| WO2016070527A1 (en) | 2016-05-12 |
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Application publication date: 20150311 |