CN103868557B - Micro-ultrasonic gas meter, flow meter - Google Patents
Micro-ultrasonic gas meter, flow meter Download PDFInfo
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- CN103868557B CN103868557B CN201410115551.2A CN201410115551A CN103868557B CN 103868557 B CN103868557 B CN 103868557B CN 201410115551 A CN201410115551 A CN 201410115551A CN 103868557 B CN103868557 B CN 103868557B
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
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- 238000013500 data storage Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000010259 detection of temperature stimulus Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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Abstract
The present invention relates to a kind of micro-ultrasonic gas meter, flow meter, it is installed in order by the base with air inlet and gas outlet, fluid passage, sensor and inner casing, fluid passage and sensor wrap are tightly connected in it and with base by inner casing, inner casing is provided with the control device being connected with sensor, provided with the inlet chamber and outlet chamber connected respectively with air inlet and gas outlet in the base, the inlet chamber is connected with outlet chamber by fluid passage, by the decay layer by layer of gas flow, by atmospheric pressure lost control under 200 Pascals.
Description
Technical field
The invention belongs to instrument field, and in particular to a kind of micro-ultrasonic gas meter, flow meter.
Background technology
As people's living standard is improved constantly, the reinforcement of people's environmental protection meaning, the urbanization of China increases the quick hair of journey
Exhibition, quick popularization of the country to natural gas clean energy resource constantly input and urban pipe network, one is welcome for supporting relevant enterprise
Individual unprecedented opportunity to develop.
And current gas meter, flow meter is the standard for following Russia mostly, its air pressure is lost in 1800 Pascals, but by
It is too high in the atmospheric pressure lost, world standard is not met, so that ultrasonic wave gas meter is unable to large-scale popularization, in Europe due to safety
Property it is too low, without being received, therefore ultrasonic wave gas meter under 200 Pascals is lost in exploitation air pressure, adapts to current combustion
Gas meter development trend.
The content of the invention
The shortcoming and defect existed for prior art, the invention provides a kind of micro-ultrasonic gas meter, flow meter, it can be by
Atmospheric pressure lost is controlled under 200 Pascals, meets current world standard.
The technical solution adopted in the present invention is：A kind of micro-ultrasonic gas meter, flow meter, it is by with air inlet and gas outlet
Base, fluid passage, sensor and the inner casing for entering for decaying gas pressure are installed in order, inner casing by fluid passage and
Sensor wrap is tightly connected in it and with base, and inner casing is provided with the control device electrically connected with sensor, the base
Provided with the inlet chamber and outlet chamber connected respectively with air inlet and gas outlet, the inlet chamber is connected with outlet chamber by fluid passage
It is logical.
The fluid passage includes gas flow piece I, gas flow piece II, the gas flow piece being arranged in order from the bottom up
IIIth, gas flow piece IV, gas flow piece V, gas flow piece VI, gas flow piece VII, gas flow piece VIII and gas flow
Piece Ⅸ.
The gas flow piece VII, gas flow piece I, gas flow piece II, gas flow piece IV, the and of gas flow piece V
Gas flow piece VIII is two panels.
The gas flow piece sets arc gap respectively about I, be distributed along center of circle fan-shaped four of symmetrical arrangement
Circular hole, and second circular hole opens " system " font slotted eye laterally respectively；The gas flow piece sets circular arc to lack respectively about II
Mouthful, four circular holes that symmetrical arrangement is distributed along center of circle fan-shaped, and the connection of symmetrical 3rd circular hole, form " T " word
Shape passage, and its left and right ends is provided with the gap slot with " system " the font slotted eye conducting of gas flow piece I；The gas flow piece
About III sets arc gap, four circular holes that symmetrical arrangement is distributed along center of circle fan-shaped, and the 3rd circular hole difference respectively
Oliquely downward it is provided with bar shape trench hole；The gas flow piece IV and gas flow piece V are provided with class at the position in the center of circle and upside down
" industry " font slotted eye, the side of the slotted eye of " industry " font that upside down in class sets three pairs of symmetrical circular holes, and is set in lower section
Put arc gap；The upper and lower ends of gas flow piece VI set arc gap, and its circle centre position sets the small of 4 symmetric arrays
Four circular holes that left and right symmetric arrays are distributed along center of circle fan-shaped on the outside of hole, aperture, first circular hole and the 3rd circular hole are opened respectively
There is class " Z " type groove；The lower end of gas flow piece VII sets arc gap, and the top portion in position in the center of circle is also provided with class and fallen
" industry " font and 2 points of slotted eyes tilted down, class fall the slotted eye that " industry " font and 2 points tilt down bottom beside set
Three pairs of symmetrical circular holes, class is fallen the slotted eye that " industry " font and tilt down at 2 points and connected with the 1st pair of circular hole, and its positive bottom sets one
To symmetrical aperture；The gas flow piece VIII arc gap setting up and down, its center of circle is symmetrical above and below to set 2 pairs symmetrical small
Hole, the both sides between aperture, which are symmetrical arranged at 2 pairs of circular holes, the circular hole of lower end, up and down sets the class with the gas flow piece VII to fall
The horizontal bar-shaped trough for the slotted eye conducting that " industry " font and 2 points are tilted down；The upper end of gas flow piece Ⅸ sets circular arc to lack
Mouthful, its circle centre position is provided with the slotted eye of class " industry " font, and a symmetrical circular hole is set in the downside of the slotted eye of class " industry " font,
All circular holes and aperture are corresponded when gas flow piece is arranged under the overlay.
The thickness that the fluid passage includes the gas flow piece I being arranged in order from the bottom up is 3 ± 0.25mm, gas stream
Road piece II be 3.25 ± 0.25mm, the thickness of gas flow piece III be 1 ± 0.25mm, the thickness of gas flow piece IV be 3 ±
0.25mm, the thickness of gas flow piece V are that 3 ± 0.25mm, the thickness of gas flow piece VI are 1 ± 0.25mm, gas flow piece
VII thickness be 4 ± 0.25mm, the thickness of gas flow piece VIII be 3 ± 0.25mm and the thickness of gas flow piece Ⅸ be 3 ±
0.25mm。
The Circularhole diameter is 5.8 ± 0.25mm, and the radius of the aperture is 2.0 ± 0.25mm.
The base is stepped space, and bottom sets outlet chamber and inlet chamber, and its top is the placement that height is 7.5mm
The space of fluid passage.
The air inlet diameter is 22mm, a diameter of 22mm in gas outlet.
The inlet chamber is cylinder, and a diameter of 22.5mm of inlet chamber, its height is 25.5mm.
The rectangle at the center that the outlet chamber is a length of 30mm, a width of 27mm its diagonal center is base, additional two
The shape for the semicircle that the individual center using base is drawn circle as the center of circle, with radius 20.5mm and constituted with the width of rectangle, it is described go out
The height of air cavity is 25.5mm.
Air admission hole and venthole are set on the drain pan of the sensor, and the air inlet position fluting makes its air inflow be more than biography
The gas output of the venthole of sensor.
The control device includes the control chip U3 with temperature-compensating, temperature sensing circuit, provides the power supply electricity of power supply
Road, current rectifying and wave filtering circuit, comparison circuit, feedback circuit and counting circuit, the current rectifying and wave filtering circuit successively with comparison circuit,
Feedback circuit, counting circuit connection, the counting circuit and temperature sensing circuit are connected with control chip U3 respectively.
The power circuit uses solar cell circuit.
The beneficial effects of the invention are as follows：By the decay layer by layer of gas flow, by atmospheric pressure lost control 200 Pascals it
Under.
Brief description of the drawings
Fig. 1 is the exploded perspective view of the present invention.
Fig. 2 is the floor map of the gas flow piece I of the present invention.
Fig. 3 is the floor map of the gas flow piece II of the present invention.
Fig. 4 is the floor map of the gas flow piece III of the present invention.
Fig. 5 is the floor map of the gas flow piece IV of the present invention.
Fig. 6 is the floor map of the gas flow piece V of the present invention.
Fig. 7 is the floor map of the gas flow piece VI of the present invention.
Fig. 8 is the floor map of the gas flow piece VII of the present invention.
Fig. 9 is the floor map of the gas flow piece VIII of the present invention.
Figure 10 is the floor map of the gas flow piece Ⅸ of the present invention.
Figure 11 is the schematic perspective view of the base of the present invention.
Figure 12 is the top view of the base of the present invention.
Figure 13 is the rearview of sensor of the invention.
Figure 14 is the front view of sensor of the invention.
Figure 15 is the structural representation with control device of the present invention.
Figure 16 is the circuit theory diagrams of the control chip of the present invention.
Figure 17 is the circuit theory diagrams of the power circuit of the present invention.
Figure 18 is the current rectifying and wave filtering circuit of the present invention and the circuit theory diagrams of feedback circuit.
Figure 19 is the circuit theory diagrams of the detection circuit of the present invention.
Figure 20 is the circuit theory diagrams of the counting circuit of the present invention.
Figure 21 is the circuit theory diagrams of the comparison circuit of the present invention.
Figure 22 is the circuit theory diagrams of the temperature sensing circuit of the present invention.
Figure 23 is the exploded perspective view of the fluid passage embodiment of the present invention.
Embodiment
Embodiments of the present invention is further illustrated below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of micro-ultrasonic gas meter, flow meter, it is by with air inlet 13 and the base of gas outlet 14 1, for declining
Subtract fluid passage, sensor 12 and inner casing 2 into gas pressure to install in order, inner casing 2 is by fluid passage and sensor
12 are covered in it and are tightly connected with base 1, and inner casing 2 is provided with the control device electrically connected with sensor 12, the base 1
Provided with the inlet chamber 15 and outlet chamber 16 connected respectively with air inlet 13 and gas outlet 14, the inlet chamber 15 leads to outlet chamber 16
Cross fluid passage connection.
As described in Fig. 2-10, the fluid passage includes gas flow piece I 3, the gas flow being arranged in order from the bottom up
Piece II 4, gas flow piece III 5, gas flow piece IV 6, gas flow piece V 7, gas flow piece VI 8, two panels gas flow piece
VII 9, gas flow piece VIII 10 and gas flow piece Ⅸ 11.
The gas flow piece sets arc gap 33 respectively about I 3, symmetrical to arrange four be distributed along center of circle fan-shaped
Individual circular hole 31, and second circular hole 31 opens " system " font slotted eye 32 laterally respectively；The gas flow piece is set respectively about II 4
Put arc gap 33, four circular holes 31 that symmetrical arrangement is distributed along center of circle fan-shaped, and symmetrical 3rd circular hole 31
Connection, formation " T " font passage 42, and its left and right ends are provided with scarce with the conducting of " system " font slotted eye 32 of gas flow piece I 3
Mouth groove 41；The gas flow piece sets arc gap 33 respectively about III 5, symmetrical to arrange four be distributed along center of circle fan-shaped
Individual circular hole 31, and the 3rd circular hole 31 is oliquely downward provided with bar shape trench hole 51 respectively；The gas flow piece IV 6 and gas flow
Piece V 7 is provided with the slotted eye 61 of " industry " font that class upside down at the position in the center of circle, the slotted eye 61 of " industry " font that upside down in class
Side set three pairs of symmetrical circular holes 31, and lower section setting arc gap 33；The upper and lower ends of gas flow piece VI 8 are set
Arc gap 33 is put, its circle centre position sets the aperture 82 of 4 symmetric arrays, the outside left and right symmetric arrays of aperture 82 are along center of circle fan-shaped
Four circular holes 31 of distribution, first circular hole 31 and the 3rd circular hole 31 have class " Z " type groove 81；The gas flow piece
VII 9 lower ends set arc gap 33, are also provided with that class falls " industry " font and tilt down in the top portion in position in the center of circle at 2 points
Slotted eye 91, class fall the slotted eye 91 that " industry " font and 2 points tilt down bottom beside three pairs of symmetrical circular holes 31, class are set
The slotted eye 91 that " industry " font and 2 points are tilted down is connected with the 1st pair of circular hole 31, and its positive bottom sets a pair of symmetrical apertures
82；The arc gap 33 setting up and down of gas flow piece VIII 10, its center of circle is symmetrical above and below to set 2 pairs of symmetrical apertures 82, on
Both sides between lower aperture 82 are symmetrical arranged the class set at 2 pairs of circular holes 31, the circular hole 31 of lower end with the gas flow piece VII 9
The horizontal bar-shaped trough 101 that the slotted eye 91 that " industry " font and 2 points are tilted down is turned on；The upper end of gas flow piece Ⅸ 11 is set
Arc gap 33 is put, its circle centre position is provided with the slotted eye 111 of class " industry " font, set in the downside of the slotted eye 111 of class " industry " font
A symmetrical circular hole 31 is put, all circular holes 31 and aperture 82 are corresponded when gas flow piece is arranged under the overlay.
Referring to Figure 23, the gas flow piece VII 9, gas flow piece I 3, gas flow piece II 4, gas flow piece IV 6,
Gas flow piece V 7 and gas flow piece VIII 10 are two panels.
The thickness that the fluid passage includes the gas flow piece I 3 being arranged in order from the bottom up is 3 ± 0.25mm, gas
Runner piece II 4 is that 3.25 ± 0.25mm, the thickness of gas flow piece III 5 are that 1 ± 0.25mm, the thickness of gas flow piece IV 6 are 3
± 0.25mm, the thickness of gas flow piece V 7 are that 3 ± 0.25mm, the thickness of gas flow piece VI 8 are 1 ± 0.25mm, gas stream
The thickness that the thickness of road piece VII 9 is 4 ± 0.25mm, the thickness of gas flow piece VIII 10 is 3 ± 0.25mm and gas flow piece Ⅸ 11
Spend for 3 ± 0.25mm.
A diameter of 5.8 ± the 0.25mm of the circular hole 31.
The radius of the aperture 82 is 2.0 ± 0.25mm.
As is illustrated by figs. 11 and 12, the base 1 is stepped space, and bottom sets outlet chamber 15 and inlet chamber 16, its
Top is the space 17 for the placement fluid passage that height is 7.5mm.
The a diameter of 22mm of the air inlet 13, a diameter of 22mm in the gas outlet 14.
The inlet chamber 15 is cylinder, and a diameter of 22.5mm of the inlet chamber 15, its height is 25.5mm.
The rectangle at the center that the outlet chamber 16 is a length of 30mm, a width of 27mm its diagonal center is base, it is additional
The shape for the semicircle that round and with rectangle width is constituted is drawn at two centers using base as the center of circle, with radius 20.5mm, described
The height of outlet chamber 16 is 25.5mm.
Natural gas enters inlet chamber 16 from air inlet 13, along gas flow piece I 3 and the circle of the upside of gas flow piece II 4
Arc breach 33 enters in the space 17 of placement fluid passage of base 1, and the gap slot 41 along gas flow piece II 4 enters gas
" system " the font slotted eye 32 of runner piece I 3, while entering outlet chamber 16 from second circular hole 31, carries out first time air pressure decay, edge
" T " the font passage 42 of gas flow piece II 4 and second of the air pressure of progress of outlet chamber 16 is entered by the 3rd circular hole 31 and decline
Subtract, then entering row of channels by III 5 pairs of above-mentioned two gas flow pieces of gas flow piece seals, it is to avoid the He of gas flow piece IV 6
The slotted eye 61 of " industry " font that the class of gas flow piece V 7 upside down is connected with " T " the font passage 42 of gas flow piece II 4, is kept away
Exempt from the change of fluid of the decay of gas, while the 3rd circular hole 31 in gas flow piece III 5 is oliquely downward provided with bar shaped respectively
Slotted eye 51, carry out third time decay, furthermore along " industry " font that upside down of class of gas flow piece IV 6 and gas flow piece V 7
Slotted eye 61 enters outlet chamber 16 from the 4th circular hole 31, carries out the 4th decay, then sets gas flow piece VI 8, the gas
The slotted eye 61 of " industry " font that runner piece upside down to gas flow piece IV 6 and the class of gas flow piece V 7 is isolated, and its
One circular hole 31 and the 3rd circular hole 31 have class " Z " type groove 81 and carry out the 5th decay, while its circle centre position sets 4
The slotted eye 61 of " industry " font that the aperture 82 of symmetric arrays upside down with gas flow piece IV 6 and the class of gas flow piece V 7 is connected, institute
The top portion in position for stating the center of circle of gas flow piece VII 9 is provided with class and falls the slotted eye 91 that " industry " font and tilt down at 2 points,
Class fall slotted eye 91 that " industry " font and 2 points tilt down bottom beside three pairs of symmetrical circular holes 31 are set, class falls " industry " font
And 2 points of slotted eyes 91 tilted down are connected by middle aperture with gas flow piece VI 8, and connect with the first circular hole 31
Logical, class falls the positive bottom of slotted eye 91 that " industry " font and tilt down at 2 points and sets a pair of symmetrical apertures 82, pair of its underpart
The aperture 82 of title is connected with gas flow piece IV 6, gas flow piece V 7 and gas flow piece VI 8, the gas flow piece VIII 10
The center of circle it is symmetrical above and below set 2 pairs of symmetrical apertures 82, up and down the both sides between aperture 82 be symmetrical arranged 2 pairs of circular holes 31, lower end
Circular hole 31 at set and fall the horizontal stroke that the slotted eye 91 that " industry " font and tilt down turns at 2 points with the class of the gas flow piece VII 9
To bar-shaped trough 101, proceed decay, the circle centre position of the gas flow piece Ⅸ 11 is provided with the slotted eye 111 of class " industry " font,
One symmetrical circular hole 31 is set in the downside of the slotted eye 111 of class " industry " font, the circular hole 31 is connected with the 3rd circular hole, while class
The slotted eye 111 of " industry " font is connected with the second circular hole 31 respectively, and is connected with the aperture 82 of the top and bottom, forms final
Decay, while top sets sensor, referring to Figure 13, fluting makes its air inflow go out more than sensor at sensor air admission hole 121
The gas output of stomata 122, forms a pressure differential, to carrying out air pressure detection in the space 17 of the placement fluid passage, and passes through 9
The decay layer by layer of layer gas flow piece, so as to get relatively low up to the air pressure at sensor.
Gas enters at the air inlet 13 of table, by fluid passage to sensor, again returns to base 1, passes through outlet
Chamber is last from gas outlet discharge, and the various passages of whole Process Design simply lengthen gas channel, and meeting city's gas lost along stroke pressure
Greatly, outlet effect is influenceed, various passages avoid the formation of the bumpy flow of gas using arc transition, reduce the loss of pressure.
As shown in figure 14, it is provided on the lid of the sensor 12 by going out that sensor 12 is electrically connected with control device
Line mouthful, the line outlet passes through sealant sealing, it is ensured that the sealing inside gas meter, flow meter, will not be led due to the line outlet of sensor
Cause is lost heart.
Drawn by substantial amounts of experiment, the shape of the thickness, aperture and the gas flow piece that are used using the present invention, Neng Gouyou
Effect by hydromechanical knowledge, realize and the atmospheric pressure lost of the present invention be reduced to below 200 Pascals, with meet Europe and
The safety standard in the world, promotes popularization of the micro-ultrasonic gas meter, flow meter to global range.
As shown in figure 15, the present invention installs control device in the upside of inner casing 2, and the control device passes through sensing by electric wire
The line outlet of device is connected with sensor, and carries out encapsulation process using fluid sealant, prevents it from losing heart, and will be whole by outer cover
Body covers on inside and protected.
As shown in Figure 16, Figure 17, Figure 18, Figure 19, Figure 20, Figure 21 and Figure 22, the control device includes band temperature-compensating
Control chip U3, temperature sensing circuit, provide the power circuit of power supply, current rectifying and wave filtering circuit, comparison circuit, feedback circuit with
And counting circuit, the control device include the control chip U3 with temperature-compensating, temperature sensing circuit, provide power supply power supply
Circuit, current rectifying and wave filtering circuit, comparison circuit, feedback circuit and counting circuit, the current rectifying and wave filtering circuit is successively with being compared electric
Road, feedback circuit, counting circuit connection, the counting circuit and temperature sensing circuit are connected with control chip U3 respectively.
Gather after the rectified filtering of signal POINT, improve the frequency of signal in the effect by raising frequency circuit, and lead to
Operational amplifier LM324 amplification outputs are crossed, is being fed back by feedback circuit and is being input to comparison circuit, limited by comparison circuit
Determine wavelength signals output, comparator U1 outputs signals to the counting chip U5 of counting circuit, carries out counting operation, then come in and go out and arrive
Control chip U3, the temperature that control chip U3 is detected by the temperature-compensation circuit of itself to temperature sensing circuit is to input
Signal carries out thermal compensation operation.
As shown in figure 22, the temperature sensing circuit uses thermo-sensitive resistor RT2 and thermo-sensitive resistor RT3, can use one
Thermo-sensitive resistor RT2 just can be to realize the detection of temperature.
The piezoelectricity waveforms detection of the use cyclone vortex formation of release（Technology of acoustic wave）Product, its principle passes through upper for air-flow
The special runner control stated, according to fluid mechanics principle, is allowed to produce the eddy airstream needed, eddy airstream is in film piezo-electric
Piece both sides produce vibration piezoelectric signal, piezoelectric signal after filtering, amplification, translation, extracted after shaping one with flow into
The pulse signal of direct ratio, control chip U3 pulse signals are measured and analyzed, and according to temperature sensing circuit measurement temperature,
According to temperature（Temperature beyond standard state）Carry out gas volume change of the compensating approach caused by temperature, and converse standard shape
Gas volume under state, meanwhile, store total flow data and show.
As shown in figure 16, the control chip U3 uses HT67F40 chips, and the chip is complete and diversified with covering
Function, includes 2K ~ 12K Word Flash program internal memories, 128 ~ 640 Byte data storages, 64 ~ 256 Byte Data
The core specification such as EEPROM and 4 ~ 12 Level Stack, at the same have concurrently practicality peripheral circuit, such as built-in R-type and
Power conservation type C-type LCD Driver can support to need clock display etc. to apply；The high-speed A/D converter of 12, is used
To capture signal such as temperature, humidity etc. of external environment；While the SPI and SPI/I2C of built-in comparator and two groups of independent works
Interface, can directly realize the function of internal temperature compensation by chip, and its periphery sets crystal oscillating circuit.
The control chip U3 can carry out data display with externally connected with display screen by display screen.
As shown in figure 17, the power circuit using diode by lithium battery T2 4.7V voltage conversions to 3.6V, then
Power supply is surely arrived by 3V by three-terminal voltage-stabilizing chip Q1, supplied with the power supply for providing whole circuit.
The power circuit can also use solar cell circuit, and conventional lithium battery is substituted using solar cell,
Sustainable use is realized, is conducive to environmental protection cause.
As shown in figure 19, the control device is additionally provided with detection circuit.By being extracted on circuit with output point C5_
OUT, is detected to this product so that detection is more convenient.
Embodiment is not construed as limitation of the present invention, but any spiritual improvements introduced based on the present invention, all should be
Within protection scope of the present invention.
Claims (8)
1. a kind of micro-ultrasonic gas meter, flow meter, it is characterised in that：It is by with air inlet（13）And gas outlet（14）Base（1）、
For the fluid passage for entering gas pressure, the sensor of decaying（12）And inner casing（2）Install in order, inner casing（2）By fluid
Passage and sensor（12）Cover in it and and base（1）It is tightly connected, inner casing（2）It is provided with and sensor（12）Electrical connection
Control device, the base（1）It is interior provided with respectively with air inlet（13）And gas outlet（14）The inlet chamber of connection（15）And outlet
Chamber（16）, the inlet chamber（15）With outlet chamber（16）Connected by fluid passage, the fluid passage include from the bottom up according to
The gas flow piece I of secondary arrangement（3）, gas flow piece II（4）, gas flow piece III（5）, gas flow piece IV（6）, gas stream
Road piece V（7）, gas flow piece VI（8）, gas flow piece VII（9）, gas flow piece VIII（10）With gas flow piece Ⅸ（11）,
The gas flow piece VII（9）, gas flow piece I（3）, gas flow piece II（4）, gas flow piece IV（6）, gas flow piece
Ⅴ（7）With gas flow piece VIII（10）It is two panels, the gas flow piece I（3）Arc gap is set respectively up and down（33）, it is left
Right symmetric arrays four are to circular hole（31）, the circular hole of left and right side arrangement is distributed along center of circle fan-shaped, and second pair of circular hole（31）Respectively to
Open " system " font slotted eye in outside（32）；The gas flow piece II（4）Arc gap is set respectively up and down（33）, symmetrical row
Row four are to circular hole（31）, the circular hole of left and right side arrangement is distributed along center of circle fan-shaped, and symmetrical 3rd pair of circular hole（31）Even
It is logical, form " T " font passage（42）, and its left and right ends is provided with and gas flow piece I（3）" system " font slotted eye（32）Conducting
Gap slot（41）；The gas flow piece III（5）Arc gap is set respectively up and down（33）, four pairs of circles of symmetrical arrangement
Hole, the circular hole of left and right side arrangement is distributed along center of circle fan-shaped, and the 3rd pair of circular hole（31）Bar shape trench hole is oliquely downward provided with respectively
（51）；The gas flow piece IV（6）With gas flow piece V（7）" industry " font that class upside down is provided with the position in the center of circle
Slotted eye（61）, the slotted eye of " industry " font that upside down in class（61）Side set three pairs of symmetrical circular holes（31）, and in lower section
Arc gap is set（33）；The gas flow piece VI（8）Upper and lower ends set arc gap（33）, 2 pairs of its circle centre position setting
The aperture of symmetric arrays（82）, aperture（82）Outside left and right symmetric arrays four are to circular hole（31）, the equal edge of circular hole of left and right side arrangement
Center of circle fan-shaped distribution, first pair of circular hole（31）With the 3rd pair of circular hole（31）Have class " Z " type groove（81）；The gas flow
Piece VII（9）Lower end sets arc gap（33）, be also provided with the top portion in position in the center of circle class fall " industry " font and 2 points it is downward
Inclined slotted eye（91）, " industry " font and 2 points of slotted eyes tilted down are fallen in class（91）Bottom both sides set three pairs it is symmetrical
Circular hole（31）, class falls " industry " font and 2 points of slotted eyes tilted down（91）With the 1st pair of circular hole（31）Connection, its positive bottom is set
A pair of symmetrical apertures（82）；The gas flow piece VIII（10）Arc gap setting up and down（33）, its center of circle is symmetrical above and below to be set
Put 2 pairs of symmetrical apertures（82）, aperture up and down（82）Between both sides be symmetrical arranged 2 pairs of circular holes（31）, the circular hole of lower end（31）
Place is set and the gas flow piece VII（9）Class fall " industry " font and 2 points of slotted eyes tilted down（91）The Cross slat of conducting
Shape groove（101）；The gas flow piece Ⅸ（11）Upper end sets arc gap（33）, its circle centre position is provided with class " industry " font
Slotted eye（111）, in the slotted eye of class " industry " font（111）Downside set a pair of symmetrical circular holes（31）, all circular holes
（31）And aperture（82）Corresponded when gas flow piece is arranged under the overlay, the circular hole（31）A diameter of 5.8 ± 0.25mm, institute
State aperture（82）Radius be 2.0 ± 0.25mm, the base（1）For stepped space, bottom sets outlet chamber（15）With enter
Air cavity（16）, its top is the space for the placement fluid passage that height is 7.5mm（17）.
2. micro-ultrasonic gas meter, flow meter according to claim 1, it is characterised in that the fluid passage include from the bottom up according to
The gas flow piece I of secondary arrangement（3）Thickness be 3 ± 0.25mm, gas flow piece II（4）For 3.25 ± 0.25mm, gas stream
Road piece III（5）Thickness be 1 ± 0.25mm, gas flow piece IV（6）Thickness be 3 ± 0.25mm, gas flow piece V（7）'s
Thickness is 3 ± 0.25mm, gas flow piece VI（8）Thickness be 1 ± 0.25mm, gas flow piece VII（9）Thickness for 4 ±
0.25mm, gas flow piece VIII（10）Thickness be 3 ± 0.25mm and gas flow piece Ⅸ（11）Thickness be 3 ± 0.25mm.
3. micro-ultrasonic gas meter, flow meter according to claim 1, it is characterised in that the air inlet（13）A diameter of 22mm,
The gas outlet（14）A diameter of 22mm.
4. micro-ultrasonic gas meter, flow meter according to claim 1, it is characterised in that the inlet chamber（15）For cylinder, institute
State inlet chamber（15）A diameter of 22.5mm, its height is 25.5mm.
5. micro-ultrasonic gas meter, flow meter according to claim 1, it is characterised in that the outlet chamber（16）For a length of 30mm,
A width of 27mm its diagonal center is the rectangle at the center of base, and additional two centers using base are as the center of circle, with radius
20.5mm draws the shape for the semicircle that round and with rectangle width is constituted, the outlet chamber（16）Height be 25.5mm.
6. micro-ultrasonic gas meter, flow meter according to claim 1, it is characterised in that the sensor（12）Drain pan on set
Air admission hole（121）And venthole（122）, the air admission hole（121）Place's fluting makes its air inflow be more than sensor（12）Outlet
Hole（122）Gas output.
7. micro-ultrasonic gas meter, flow meter according to claim 1, it is characterised in that the control device includes band temperature-compensating
Control chip U3, temperature sensing circuit, provide the power circuit of power supply, current rectifying and wave filtering circuit, comparison circuit, feedback circuit with
And counting circuit, the current rectifying and wave filtering circuit is connected with comparison circuit, feedback circuit, counting circuit successively, the counting circuit
It is connected respectively with control chip U3 with temperature sensing circuit.
8. micro-ultrasonic gas meter, flow meter according to claim 7, it is characterised in that the power circuit uses solar cell
Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115551.2A CN103868557B (en) | 2014-03-26 | 2014-03-26 | Micro-ultrasonic gas meter, flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115551.2A CN103868557B (en) | 2014-03-26 | 2014-03-26 | Micro-ultrasonic gas meter, flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103868557A CN103868557A (en) | 2014-06-18 |
| CN103868557B true CN103868557B (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410115551.2A Expired - Fee Related CN103868557B (en) | 2014-03-26 | 2014-03-26 | Micro-ultrasonic gas meter, flow meter |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483380A (en) * | 2014-12-19 | 2015-04-01 | 郑州光力科技股份有限公司 | Temperature-compensation-based ultrasonic wave gas concentration measurement method and temperature-compensation-based ultrasonic wave gas concentration measurement device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719204A (en) * | 2005-07-29 | 2006-01-11 | 公安部沈阳消防研究所 | Detection device of airflow flow |
| CN101126652A (en) * | 2007-09-29 | 2008-02-20 | 重庆前卫仪表厂 | Electronic gas meter for mass and flow |
| CN202471147U (en) * | 2012-02-17 | 2012-10-03 | 郑州引领科技有限公司 | Ultrasonic gas meter |
| CN102967333A (en) * | 2011-06-30 | 2013-03-13 | 江向前 | Micro ultrasonic gas meter |
| CN203745018U (en) * | 2014-03-26 | 2014-07-30 | 温州博真仪表科技有限公司 | Micro ultrasonic gas meter |
-
2014
- 2014-03-26 CN CN201410115551.2A patent/CN103868557B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719204A (en) * | 2005-07-29 | 2006-01-11 | 公安部沈阳消防研究所 | Detection device of airflow flow |
| CN101126652A (en) * | 2007-09-29 | 2008-02-20 | 重庆前卫仪表厂 | Electronic gas meter for mass and flow |
| CN102967333A (en) * | 2011-06-30 | 2013-03-13 | 江向前 | Micro ultrasonic gas meter |
| CN202471147U (en) * | 2012-02-17 | 2012-10-03 | 郑州引领科技有限公司 | Ultrasonic gas meter |
| CN203745018U (en) * | 2014-03-26 | 2014-07-30 | 温州博真仪表科技有限公司 | Micro ultrasonic gas meter |
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| Publication number | Publication date |
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| CN103868557A (en) | 2014-06-18 |
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