CN105387899B - A kind of ultrasonic flowmeter shell structure - Google Patents
A kind of ultrasonic flowmeter shell structure Download PDFInfo
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- CN105387899B CN105387899B CN201510772813.7A CN201510772813A CN105387899B CN 105387899 B CN105387899 B CN 105387899B CN 201510772813 A CN201510772813 A CN 201510772813A CN 105387899 B CN105387899 B CN 105387899B
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- chamber
- upper housing
- lower case
- partition
- circuit board
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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
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/14—Casings, e.g. of special material
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
A kind of ultrasonic flowmeter shell structure, including upper housing, lower case, air-flow buffer chamber is equipped in lower case, air-flow buffer chamber is divided into a left side by partition, right chamber, intake interface and outlet interface are equipped in the top surface of upper housing, runner shell fixed mechanism is equipped in the bottom surface of upper housing, it is equipped with circuit in upper housing, chamber is installed, symmetrical inlet plenum and outlet chamber are offered in upper housing, the upper end of inlet plenum is communicated with air inlet, the lower end of inlet plenum is communicated with the left chamber of lower case, the upper end of outlet chamber is communicated with gas outlet, the lower end of outlet chamber is communicated with the right chamber of lower case.The present invention has the advantage that: air-flow buffer cavity space is larger, and diversion effect is good, and the flow regime of gas is made to be adjusted to tend to be steady, and is conducive to the accuracy for improving metering；Upper and lower casing or so is symmetrical structure, facilitates right and left mutually changing, and circuit board is hidden in shell, outside electromagnetic interference can be shielded, improve the reliability used.
Description
Technical field
The present invention relates to a kind of fluid metering field, especially a kind of shell of flowmeter.
Background technique
Flowmeter refer to measured flux and (or) in selected time interval fluid total volume instrument, be such as used for gas flow
The gas meter, flow meter of metering mostly uses greatly the right gas meter of mechanical membrane type in existing gas meter, flow meter, although the meter of the right gas meter of mechanical membrane type
Amount is reliable, and quality is stablized, this need in table body installing machine core valve grid, occupied space is larger, heavier-weight, and each component assembling is not
Just, when the mechanical reciprocation of diaphragm gas meter carries out volume metering, diaphragm is influenced by temperature larger, asks with the variation in season
Value error can shift, and mechanical reciprocation is easy to happen mechanical wear, can have an impact to the error of indication, to long-time service
It is inconvenient to bring.
For ease of use, electronic gas table is also used, for the accurate measurement for improving fluid flow, rectification need to be passed through
Device carries out current stabilization to gas flow, general to increase length using the pipeline being connected in the upstream of gas meter, flow meter with flowmeter, in order to subtract
Few gas meter, flow meter volume, saves installation site, is not easy to increase straight pipe.And currently used rectifier is main inside gas meter, flow meter
It is installed at runner, is adjusted flow regime of fluid when by rectifier and tends to be steady, be conducive to the standard of metering
True property is improved, but since the rectifier of existing composition is mounted at gas meter sprue, gas meter internal volume is limited, does not have
There is the space of additionally mounted rectifier installation, is not easy to install, rectification effect is poor, and the accuracy of metering need further to mention
It is high.
Summary of the invention
The object of the present invention is to provide a kind of ultrasonic flowmeter shell structure, it is easy to process, small in size, can mitigate
The weight of whole table, it not only has the function of rectification, buffers to air-flow, keeps uniform flow velocity, reduces the pressure loss, also
It can be convenient the multiple circuit boards of installation, avoid the operation circuit on circuit board by outside electromagnetic interference.
The purpose of the present invention is what is be implemented with the following technical solutions, the present invention includes upper housing, lower case, upper housing
Bottom surface and the top surface of lower case are quadrangle, and the air-flow buffer chamber in quadrangle, air-flow buffer chamber are offered in lower case
It is inside provided with the partition that air-flow buffer chamber is separated into the two symmetrical chambers in left and right, the card slot being in U-shape is offered on partition；
The top surface of upper housing is provided with intake interface and outlet interface, the bottom surface of upper housing is provided with runner shell fixed mechanism,
The circuit installation chamber that one side opening three side sealing closes is provided between the top surface and bottom surface of upper housing, circuit installation cavity is set in room
It is equipped with circuit board mounting structure, the opening that circuit installs chamber is located at the front or the back side of upper housing, and circuit installs chamber or so
Symmetrical inlet plenum and outlet chamber are offered in the upper housing of two sides, the upper end of inlet plenum is communicated with intake interface,
The lower end of inlet plenum forms opening in the bottom surface of upper housing, and the upper end of outlet chamber is communicated with outlet interface, outlet chamber
Lower end forms opening in the bottom surface of upper housing；The bottom surface of upper housing and the top surface of lower case fit, and make the inlet chamber of upper housing
Room is opposite with the left chamber of lower case, keeps the outlet chamber of upper housing opposite with the right chamber of lower case, upper housing and lower case
Between the fixing piece being connected to each other is set.
Heretofore described quadrangle can be rectangle, using can be convenient after rectangle upper housing and lower case it
Between right and left mutually changing, i.e., by the inlet plenum of the former upper housing inlet plenum for becoming upper housing opposite with the left chamber of lower case with
The right chamber of lower case is opposite and by the outlet chamber of the former upper housing outlet for becoming upper housing opposite with the right chamber of lower case
Chamber is opposite with the left chamber of lower case, realizes the exchange of rigging position, and convenient adjustment installation position as needed increases use
Range first the runner shell being used cooperatively with the present invention is consolidated by runner shell when assembling the whole table of ultrasonic wave gas meter
Determine mechanism to be fixed on upper housing, the middle part of runner shell is corresponded in lower case in the card slot of partition, then will realize gas meter, flow meter
The circuit board of required function is mounted in upper casing intracorporal circuit installation cavity room by circuit board mounting structure, is connected circuit board and is connect
Line, and other components such as display are mounted on the opening that circuit installs chamber, finally sealing is assembled in the surrounding of display
It press strip and is fixed to one another upper and lower casing to form whole table.
Since the space of air-flow buffer chamber is larger, after the intracavitary installation runner shell of air-flow buffer, runner shell and air-flow
There is certain height between cushion chamber, make air-flow buffer chamber there are also a big chunk space, when in gas there are when impurity,
It will be deposited on the bottom of air-flow buffer chamber under the self weight of impurity, or form water in table due to variation of ambient temperature
Liquid, aqueous can equally deposit the bottom of air-flow cushion chamber.When gas enters left chamber by intake interface, adjusted by left chamber
Make the flow regime of gas to tending to be steady, after the gas of runner shell enters right chamber, same right chamber is also to gas
It is adjusted, makes flowing gas state to tending to be steady, achieve the purpose that the pressure loss before table after table becomes smaller, be conducive to measure
Accuracy be improved.
The biggish circuit installation chamber being arranged in upper housing can accommodate multiple circuit boards, hide each circuit board entirely
Inside upper housing, avoid being improved the reliability used by outside electromagnetic interference.It can first be installed by circuit board mounting structure
Circuit frame, mounting circuit boards, circuit board can carry out good fixation by circuit frame, prevent to shake again on circuit frame
It is dynamic, or by the direct fixing circuit board of circuit board mounting structure, being fixed conveniently for circuit board is more, facilitates installation.
By adopting the above-described technical solution, the present invention has the advantage that:
(1), the air-flow buffer cavity space in lower case is larger, as well as greatly empty after installing runner shell
Between, depositing contaminants can be used to, and have just enter into gas meter, flow meter in gas, play guide functions before not entering runner, make gas
Flow regime is adjusted to tend to be steady, so that the pressure loss before table after table becomes smaller, the accuracy for being conducive to metering is improved；
(2), upper and lower casing or so is symmetrical structure, can be with right and left mutually changing；
(3), shell is used to stationary flowpath by the card slot in lower case, will be entire internal by the combination of card slot and runner
Cavity is divided into two cavitys, is respectively used to air inlet outlet；
(4), upper housing can install stationary flowpath shell, runner shell fixed mechanism by runner shell fixed mechanism
Using symmetric mode, realize to the installation after runner shell right and left mutually changing；
(5), larger in the circuit installation chamber of upper housing, it hides circuit board and is mounted on inside metal shell, Ke Yiping
Outside electromagnetic interference is covered, the reliability used is improved；
(6), circuit board the intracorporal mounting means of upper casing can there are many, so that circuit board is fixed conveniently.
Detailed description of the invention
Detailed description of the invention of the invention is as follows.
Fig. 1 is the main view of upper housing.
Fig. 2 is the bottom view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is the cross-sectional view of A-A in Fig. 3.
Fig. 5 is the structural schematic diagram of lower case.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the perspective view of lower case.
Fig. 8 is the structural schematic diagram in the present invention after upper and lower casing assembly.
Specific embodiment
In order to make the present invention realize technological means, creation characteristic, reach purpose and effect more clearly and be apparent to,
The present invention is further elaborated with reference to the accompanying drawings and detailed description:
As shown in Figs. 1-5, the present invention has upper housing 1, lower case 2, and the bottom surface of upper housing 1 and the top surface of lower case 2 are equal
For quadrangle, the air-flow buffer chamber 3 in quadrangle is offered in lower case 2, is provided in air-flow buffer chamber 3 by air-flow buffer
Chamber is separated into the partition 4 of left and right two symmetrical chambers, and the card slot 5 being in U-shape is offered on partition 4；On the top of upper housing 1
Face is provided with intake interface 6 and outlet interface 7, the bottom surface of upper housing 1 is provided with runner shell fixed mechanism, in upper housing 1
Top surface and bottom surface between be provided with one side opening three side sealing close circuit installation chamber 8, circuit installation chamber 8 in be provided with electricity
Road board mounting structure, the opening that circuit installs chamber 8 are located at the front or the back side of upper housing 1, and circuit installs 8 left and right sides of chamber
Upper housing 1 in offer symmetrical inlet plenum 9 and outlet chamber 10, upper end and 6 phase of intake interface of inlet plenum 9
Logical, the lower end of inlet plenum 9 forms opening in the bottom surface of upper housing 1, and the upper end of outlet chamber 10 is communicated with outlet interface 7, out
The lower end of gas chamber 10 forms opening in the bottom surface of upper housing 1；The bottom surface of upper housing 1 and the top surface of lower case 2 fit, and make
The inlet plenum 9 of shell 1 is opposite with the left chamber of lower case, makes the outlet chamber 10 of upper housing 1 with the right chamber phase of lower case
It is right, the fixing piece being connected to each other is set between upper housing 1 and lower case 2.
Heretofore described quadrangle can be rectangle, using can be convenient after rectangle upper housing and lower case it
Between right and left mutually changing, i.e., by the inlet plenum of the former upper housing inlet plenum for becoming upper housing opposite with the left chamber of lower case with
The right chamber of lower case is opposite and by the outlet chamber of the former upper housing outlet for becoming upper housing opposite with the right chamber of lower case
Chamber is opposite with the left chamber of lower case, realizes the exchange of rigging position, and convenient adjustment installation position as needed increases use
Range.
As shown in figure 8, first the runner shell being used cooperatively with the present invention is passed through in the whole table of assembly ultrasonic wave gas meter
Runner shell fixed mechanism is fixed on upper housing, and the middle part of runner shell is corresponded in lower case in the card slot of partition, then will
It realizes that the circuit board of gas meter, flow meter required function is mounted in upper casing intracorporal circuit installation cavity room by circuit board mounting structure, connects
Upper circuit board wiring, and other components such as display are mounted on the opening that circuit installs chamber, finally the four of display
It assembles seal trim strip week and is fixed to one another upper and lower casing to form whole table.
Since the space of air-flow buffer chamber is larger, after the intracavitary installation runner shell of air-flow buffer, runner shell and air-flow
There is certain height between cushion chamber, make air-flow buffer chamber there are also a big chunk space, when in gas there are when impurity,
It will be deposited on the bottom of air-flow buffer chamber under the self weight of impurity, or form water in table due to variation of ambient temperature
Liquid, aqueous can equally deposit the bottom of air-flow cushion chamber.When gas enters left chamber by intake interface, adjusted by left chamber
Make the flow regime of gas to tending to be steady, after the gas of runner shell enters right chamber, same right chamber is also to gas
It is adjusted, makes flowing gas state to tending to be steady, achieve the purpose that the pressure loss before table after table becomes smaller, be conducive to measure
Accuracy be improved.
The biggish circuit installation chamber being arranged in upper housing can accommodate multiple circuit boards, hide each circuit board entirely
Inside upper housing, avoid being improved the reliability used by outside electromagnetic interference.It can first be installed by circuit board mounting structure
Circuit frame, mounting circuit boards, circuit board can carry out good fixation by circuit frame, prevent to shake again on circuit frame
It is dynamic, or by the direct fixing circuit board of circuit board mounting structure, being fixed conveniently for circuit board is more, facilitates installation.Upper housing
It once-forming can be process, keep circuit installation chamber 8, inlet plenum 9 and outlet chamber 10 once-forming in upper housing 1.
As shown in fig. 7, lower case 2 is disposably integrally formed by front side wall, rear wall, left side wall, right side wall and bottom plate
Empty and upper end opening lower end closed quadrangle shell in being formed afterwards, interior absolutely empty of lower case 2 is air-flow buffer chamber 3, described
Partition 4 is vertical to be located in air-flow buffer chamber 3, and the front end of partition 4 and the middle part of front side wall are in be wholely set, the rear end of partition 4
With the middle part of rear wall in being wholely set, the lower end of partition 4 and bottom plate are in one, the upper end of partition 4 and front side wall, rear wall
Air-flow buffer chamber 3 is separated into two independent left chamber and right chamber by partition 4 by either flush, and card slot 5 is located at partition 4
The notch of top and card slot 5 is located at the upper surface of partition 4.
Lower case 2 can by aluminum material it is once-forming provided front side wall, rear wall, left side wall, right side wall, bottom plate and
The rectangular side shape shell of partition 4 after 2 level of lower case loads onto runner shell, makes the lower end of runner shell be located at air-flow and rushes chamber
Middle part, there are also a big chunk spaces for the air-flow buffer chamber of part below runner shell, can be used to depositing contaminants.And in gas
Body have just enter into gas meter, flow meter enter will not direct runner shell air inlet, need to be rectified by air-flow buffer chamber, allow gas
It is more steady, and the pressure loss before table after table is become smaller.
As shown in fig. 7, being provided with sealing limiting slot 11 on three cell walls of card slot 5.The sealing limiting slot 11 not only may be used
To accommodate the limit plate on runner shell, it can also be formed together sealing structure with the limit plate on runner shell, make left and right chamber
Room forms independent chamber, prevents the gas intercommunication between left and right chamber, guarantees measuring accuracy.
As shown in Figure 3-4,1 bottom surface of upper housing being bonded with 4 upper end of partition is provided with bar shaped seal groove 12.Bar shaped is close
Sealing groove 12 when in use, after also placing sealing strip to avoid upper and lower casing assembly, leaks between left and right chamber, guarantees
Airtightness inside gas meter, flow meter.
As shown in figure 3, runner shell fixed mechanism includes fixation hole 13, positioning pin 14 and strengthening rib strip 15, strengthening rib strip
15 the bottom surface of upper housing 1 is arranged in linear type, and one end of strengthening rib strip 15 is in be wholely set technique pylon 16, fixation hole 13
It is arranged in technique pylon 16, the other end of strengthening rib strip 15 is in be wholely set with positioning pin 14.
As shown in figure 8, runner shell fixed mechanism is when installing runner shell 31, it can be first by location hole on runner shell
Cover and can make mounting hole on runner shell and fixation hole 13 opposite in positioning pin 14, so that it may realized between the two by screw
Fixation, strengthening rib strip can increase intensity, prevent from forming into deforming.
As shown in figure 3, runner shell fixed mechanism is two groups, arranged between two groups of runner shell fixed mechanisms at spacing,
The spacing matches with runner case width, wherein one group of runner shell fixed mechanism is located at the left side of bar shaped seal groove 12, separately
One group of runner shell fixed mechanism is located at the right side of bar shaped seal groove 12, the strengthening rib strip in two groups of runner shell fixed mechanisms it
Between be parallel to each other, the technique pylon in every group of runner shell fixed mechanism is close to the bar shaped seal groove.
It can not influence to flow in upper and lower casing right and left mutually changing by two groups of runner shell fixed mechanisms disposed in parallel
Installation after road shell right and left mutually changing increases the convenience and interchangeability of installation.
As shown in Figure 3-4, upper being bonded with lower case 2 in order to increase the leakproofness after assembling between upper and lower casing
The binding face of shell is provided with seal groove 17, is placed with sealing ring in seal groove 17.
In order to increase sealing effect, be provided with sealing joint strip in bar shaped seal groove 12 in assembly.
As shown in Fig. 1,4, muti-piece circuit board and attached component, circuit board mounting structure include electricity in order to facilitate the installation of
Road board slot 18, installation card slot 19 and positioning column 20, circuit board slot 18 are arranged in the left and right side walls of circuit installation chamber 8,
The front of 8 left and right side walls of circuit board installation cavity is arranged in installation card slot 19, and positioning column 20 is two, and two positioning columns are set respectively
It sets on 8 rear wall of circuit board installation cavity, the front end of positioning column 20 and circuit board slot 18 are opposite.When mounting circuit boards, Ke Yixian
After one or more circuit board is fixed on circuit frame, then circuit frame is stuck in circuit board slot 18, installation card slot 19 can
To install for display, positioning column 20 can be used for the end of locating circuit board.
As shown in figure 3, the connection of signal wire for convenience, is provided with rectangular process area 21 at the bottom surface rear portion of upper housing 1,
The adapter mounting hole 22 passed through for signal line is offered on rectangular process area 21, the adapter mounting hole 22 and circuit are pacified
Room 8 of behaveing affectedly communicates.Adapter mounting hole 22, which is located at upper housing bottom surface rear portion, can guarantee that signal wire transfer route is short, greatly subtract
Small signal decaying.
As shown in figure 3, at least one reserved process area 23 is provided at the bottom surface rear portion of upper housing 1, in reserved process area
The reserved hole location 24 of destructible is set on 23.Reserved hole location 24 can need to increase other using function in gas meter, flow meter, need to connect
When line, facilitate destruction that reserved hole location 24 is made to be unfolded into threading hole.
As shown in fig. 7, being provided with reinforcing rib 25, the upper end of reinforcing rib 25 and 5 horizontal sides of card slot in the left and right sides of partition 4
Concordantly.Reinforcing rib can increase the intensity at the card slot 5 of partition 4.
As shown in Fig. 2,6-7, the fixing piece includes preceding fixation hole 26, rear fixation hole 27, left fixation hole 28 and right fixation
Hole 29, wherein preceding fixation hole 26 is arranged on the front arc trunnion on front side wall, and the rear arc branch of rear wall is arranged in rear fixation hole 27
On ear, front and back is symmetrical between preceding fixation hole 26 and rear fixation hole, and the top surface of left side wall, right fixation hole 29 is arranged in left fixation hole 28
The top surface of right side wall is set, bilateral symmetry, preceding fixation hole 26, rear fixation hole 27, Zuo Gu between left fixation hole and right fixation hole
Determine hole 28 and right fixation hole 29 be on same plane, upper housing 1 be provided with respectively with preceding fixation hole 26, rear fixation hole
27, left fixation hole 28 and the corresponding fixed blind hole 30 of right fixation hole 29.It can guarantee that upper and lower casing exists by above-mentioned fixing piece
When right and left mutually changing, facilitate installation, the fixation blind hole 30 on upper housing and the preceding fixation hole 26 in lower case, rear fixation hole 27, a left side
Fixation hole 28 and right fixation hole 29 are matched and are bolted again, can make tie point downward, improve the aesthetics of whole table.
Claims (8)
1. a kind of ultrasonic flowmeter shell structure, including upper housing (1), lower case (2), it is characterised in that: upper housing (1)
Bottom surface and the top surface of lower case (2) are quadrangle, and the air-flow buffer chamber (3) in quadrangle, gas are offered in lower case (2)
It is provided with the partition (4) that air-flow buffer chamber is separated into left and right two symmetrical chambers in stream cushion chamber (3), on partition (4)
Offer the card slot (5) being in U-shape；The top surface of upper housing (1) is provided with intake interface (6) and outlet interface (7), in upper housing
(1) bottom surface is provided with runner shell fixed mechanism, and circuit installation chamber is provided between the top surface and bottom surface of upper housing (1)
(8), circuit board mounting structure is provided in circuit installation chamber (8), the opening of circuit installation chamber (8) is located at upper housing (1)
Front or the back side, circuit installation chamber (8) at left and right sides of upper housing (1) in offer symmetrical inlet plenum (9) and
The upper end of outlet chamber (10), inlet plenum (9) is communicated with intake interface (6), and the lower end of inlet plenum (9) is in upper housing (1)
Bottom surface form opening, the upper end of outlet chamber (10) communicates with outlet interface (7), and the lower end of outlet chamber (10) is in upper housing
(1) bottom surface forms opening；The bottom surface of upper housing (1) and the top surface of lower case (2) fit, and make the inlet chamber of upper housing (1)
Room (9) is opposite with the left chamber of lower case, keeps the outlet chamber (10) of upper housing (1) opposite with the right chamber of lower case, upper casing
The fixing piece being connected to each other is set between body (1) and lower case (2), is set in upper housing (1) bottom surface being bonded with partition (4) upper end
It is equipped with bar shaped seal groove (12), runner shell fixed mechanism includes fixation hole (13), positioning pin (14) and strengthening rib strip (15), is added
Strengthening tendons item (15) is arranged in linear type in the bottom surface of upper housing (1), and one end of strengthening rib strip (15) is in be wholely set technique column
Platform (16), fixation hole (13) setting is in technique pylon (16), and the other end of strengthening rib strip (15) and positioning pin (14) are in one
Setting.
2. ultrasonic flowmeter shell structure as described in claim 1, it is characterised in that: lower case (2) is by front side wall, rear side
Wall, left side wall, right side wall and bottom plate form interior empty and upper end opening lower end closed quadrangle shell after being disposably integrally formed
Body, interior absolutely empty of lower case (2) are air-flow buffer chamber (3), and the partition (4) is vertical to be located in air-flow buffer chamber (3), every
In being wholely set, the rear end of partition (4) and the middle part of rear wall are in be wholely set for the front end of plate (4) and the middle part of front side wall, every
The lower end of plate (4) and bottom plate are in one, the either flush of the upper end of partition (4) and front side wall, rear wall, by partition (4) by gas
Stream cushion chamber (3) is separated into two independent left chamber and right chamber, and card slot (5) is located at the top of partition (4) and card slot (5)
Notch is located at the upper surface of partition (4).
3. ultrasonic flowmeter shell structure as claimed in claim 2, it is characterised in that: on three cell walls of card slot (5)
It is provided with sealing limiting slot (11).
4. ultrasonic flowmeter shell structure as claimed in claim 2, it is characterised in that: runner shell fixed mechanism is two
Group arranges that the spacing matches with runner case width, wherein one group of runner between two groups of runner shell fixed mechanisms at spacing
Shell fixed mechanism is located at the left side of bar shaped seal groove (12), and another group of runner shell fixed mechanism is located at bar shaped seal groove (12)
Right side, be parallel to each other between the strengthening rib strip in two groups of runner shell fixed mechanisms, in every group of runner shell fixed mechanism
Technique pylon is close to the bar shaped seal groove.
5. the ultrasonic flowmeter shell structure as described in claim 1,2,3 or 4, it is characterised in that: pasted with lower case (2)
The binding face of the upper housing of conjunction is provided with seal groove (17), is placed with sealing ring in seal groove (17).
6. ultrasonic flowmeter shell structure as claimed in claim 5, it is characterised in that: the setting in bar shaped seal groove (12)
There is sealing joint strip.
7. ultrasonic flowmeter shell structure as claimed in claim 6, it is characterised in that: circuit board mounting structure includes circuit
Board slot (18), installation card slot (19) and positioning column (20), circuit board slot (18) setting circuit installation chamber (8) a left side,
On right side wall, in the front of circuit board installation cavity (8) left and right side walls, positioning column (20) is two for installation card slot (19) setting, two
A positioning column is separately positioned on circuit board installation cavity (8) rear wall, and the front end and circuit board slot (18) of positioning column (20) are opposite.
8. ultrasonic flowmeter shell structure as claimed in claim 7, it is characterised in that: at the bottom surface rear portion of upper housing (1)
It is provided with rectangular process area (21), offers the adapter mounting hole passed through for signal line on rectangular process area (21)
(22), which communicates with circuit installation chamber (8), is provided at least at the bottom surface rear portion of upper housing (1)
The reserved hole location (24) of destructible is arranged in one reserved process area (23) on reserved process area (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772813.7A CN105387899B (en) | 2015-11-12 | 2015-11-12 | A kind of ultrasonic flowmeter shell structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510772813.7A CN105387899B (en) | 2015-11-12 | 2015-11-12 | A kind of ultrasonic flowmeter shell structure |
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| CN105387899A CN105387899A (en) | 2016-03-09 |
| CN105387899B true CN105387899B (en) | 2018-12-14 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017214370A1 (en) * | 2017-08-17 | 2019-02-21 | Landis + Gyr Gmbh | Transducer for a flowmeter with a stepped sidewall |
| CN113701834B (en) * | 2021-07-29 | 2023-04-07 | 上海中核维思仪器仪表股份有限公司 | Gas ultrasonic flowmeter |
| CN114235081B (en) * | 2022-02-28 | 2022-11-01 | 水发航宇星物联科技(辽宁)有限公司 | Ultrasonic flowmeter meter runner device |
| CN118032600A (en) * | 2024-04-12 | 2024-05-14 | 苏州普洛泰科精密工业有限公司 | Small-volume air suspension particle detection device capable of effectively resisting airflow fluctuation impact |
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| WO2012164859A1 (en) * | 2011-05-27 | 2012-12-06 | パナソニック株式会社 | Ultrasonic flow rate measurement unit and gas flowmeter using same |
| CN203964971U (en) * | 2014-07-28 | 2014-11-26 | 北京嘉洁能科技有限公司 | Bicavate ultrasonic wave gas meter |
| CN204346516U (en) * | 2014-11-27 | 2015-05-20 | 新天科技股份有限公司 | A kind of supersonic gas table flow passage structure with steady flow result |
| CN204405124U (en) * | 2015-03-09 | 2015-06-17 | 成都千嘉科技有限公司 | A kind of ultrasonic wave gas flowmeter |
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