CN106979805A - Gas meter - Google Patents
Gas meter Download PDFInfo
- Publication number
- CN106979805A CN106979805A CN201710044200.0A CN201710044200A CN106979805A CN 106979805 A CN106979805 A CN 106979805A CN 201710044200 A CN201710044200 A CN 201710044200A CN 106979805 A CN106979805 A CN 106979805A
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- China
- Prior art keywords
- gas
- filter
- flow path
- inlet fluid
- fluid path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—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
Abstract
The present invention provides a kind of ultrasonic type gas meter that can be cut down number of elements, assemble man-hour.Filter (15) has：Cartridge unit (16) with the peripheral shape corresponding with the internal face of inlet fluid path portion (12a)；And connection is arranged on the one end of cartridge unit (16), and with the end wall (17) of the opening as gas passage (17a).Kept moreover, the filter (15) is accommodated by the internal face of inlet fluid path portion (12a).
Description
Technical field
The present invention relates to gas meter.
Background technology
In the past, as various gas meters known to the gas meter of measurement gas flow, for example, there is ultrasonic type gas meter.Ultrasonic type gas
A pair of sonic transducers (ultrasonic type flow sensor) that table is constituted including piezoelectric type oscillator by being worked with ultrasonic frequency etc.,
A pair of ultrasonic type flow sensors are configured in gas flow path at a distance from ground.
The body portion main body of gas meter is provided with the gas inflow entrance that is connected with gas supply source and is connected with burner etc.
Gas flow outlet, in body portion main body is internally formed from gas inflow entrance reach gas flow outlet gas flow path.The gas
Body stream has the flow path shape for being bent into approximate U shape, including：Connected with gas inflow entrance and supplied gas flows in above-below direction
Inlet fluid path portion；Connected with gas flow outlet and outlet flow passage portion that supplied gas flows in above-below direction；And by entrance stream
The intermediate flow passage portion that road portion is connected with outlet flow passage portion.
It is configured with intermediate flow passage portion and the flowing to gas is subjected to tubular of the cowling panel configuration of rectification inside it
Stream housing, the gas for reaching outlet flow passage portion from inlet fluid path portion flows in the stream housing.In the sidepiece of stream housing
A pair of ultrasonic type flow sensors are configured with, is measured and is flowed in stream housing by a pair of ultrasonic type flow sensors
The flow velocity of dynamic gas.
But, inlet fluid path portion is due to the relation of the stop valve that is cut off including the flowing to gas etc., so turning into
Following this complicated flow path configuration：Gas can flow to the rear side of gas meter for the time being, or in flow diameter subcontract
Flow at position.The complicated flow path configuration causes that in the gas that inlet fluid path portion is flowed disorder can be produced, due to the disturbance state
Gas be flowed into stream housing, so flow measurement can produce deviation sometimes, flow error increase.
Thus, for example patent document 1 discloses be constructed as below：It is configured near the inflow entrance of measurement pipe (stream housing)
Flowing to gas carries out the cowling panel of rectification.The cowling panel is installed to channel member from the bottom surface side of body portion main body.In addition, example
As patent document 2 discloses that being constructed as below：Cowling panel is equipped in the upper wall portions for being formed at inlet fluid path portion.In upper wall portions, edge
Airflow direction and be protrusively provided the boss including screwed hole.In addition, cowling panel is included in the screw thread of its thickness of slab direction insertion
Hole, and be screwed in boss.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2009-186429 publications
Patent document 2：Japanese Unexamined Patent Publication 2010-008116 publications
The content of the invention
The problem of present invention is to be solved
However, according to disclosed in patent document 1,2 method, due to needing flat cowling panel being assembled and secured to gas
Body stream, therefore number of elements can be caused to increase, or assemble the problem of man-hour increase is such.Further, since in narrow and small gas
Assembling operation is carried out in body stream, therefore, workability is poor, assembling man-hour increase can be caused.
The present invention be in view of the situation and complete, its object is to provide a kind of ultrasonic type gas meter, member can be reduced
Number of packages amount, assembling man-hour.
The solution used to solve the problem
To solve the problem, gas meter of the invention includes：Body portion main body, it is internally formed with from gas inflow entrance to gas
The a series of gas flow path of body flow export, and bottom surface opened；And lower cover, it is disposed in the bottom surface of body portion main body, covering
The bottom surface side of body portion main body and confining gas stream, gas meter are characterised by having：Measuring means, it is configured in gas flow path
It is interior, it is to be constituted in the stream housing over-assemble sensor of tubular；And filter, it is configured in the vicinity of measuring means,
The flowing of gas to being flowed in gas flow path carries out rectification, and filter has：Cartridge unit, its have with gas flow path
The corresponding peripheral shape of wall；And end wall, it connects the one end for being arranged on cartridge unit, and with as gas passage
Opening, filter by gas flow path internal face accommodate keep.
Herein, in the present invention preferably, gas flow path includes：Inlet fluid path portion, it is connected with gas inflow entrance；Outlet
Flow path portion, it is connected with gas flow outlet；And intermediate flow passage portion, it is not connected with inlet fluid path portion and outlet pathway portion,
Measuring means is accommodated, gas flow path has the flow path shape for being bent into approximate U shape, and filter deployment is in inlet fluid path portion and outlet
A flow path portion or two flow path portions in flow path portion.
In addition, in the present invention preferably, filter is embedded into flow path portion in the way of the upper end that end wall is located at cartridge unit,
And the supporting part that the lower end of filter is formed from lower cover is kept.
Invention effect
By according to the present invention, due to by the way that the filter of tubular is embedded into gas flow path, so that in gas flow path
Accommodate and keep filter, therefore, it is possible to which filter is simply assembled.In this case, due to that need not assemble, it is fixed another
Outer part, can reduce number of elements, assembling man-hour.Fixed further, since screw need not be carried out in narrow and small stream
Deng complicated operation, therefore, it is possible to improve workability, assembling man-hour is reduced.
Brief description of the drawings
Fig. 1 is the front view for the composition for showing the ultrasonic type gas meter involved by present embodiment.
Fig. 2 is the in-built sectional view for schematically showing the ultrasonic type gas meter involved by present embodiment.
Fig. 3 is the stereogram for the major part for schematically showing lower cover.
Fig. 4 is the stereogram for the composition for showing filter.
Fig. 5 is the explanation figure for schematically showing the state after assembling filter device.
Fig. 6 is the explanation figure for schematically showing the state before assembling filter device.
Description of reference numerals
10：Meter body portion
10a：Body portion main body
10a1：Groove portion
11a：Gas inflow entrance
11b：Gas flow outlet
12：Gas flow path
12a：Inlet fluid path portion
12a1：Opening portion
12b：Intermediate flow passage portion
12c：Outlet flow passage portion
15：Filter
16：Cartridge unit
16a：Opening
16b：Jut
16b1：Rib
17：End wall
17a：Gas passage
17b：Boss portion
20：Lower cover
21：Recess
21a：Entrance recess
21a1：The week side of boss wall
21a2：Supporting part
21b：Medial concavity
21c：Export recess
30：Measuring means
31：Stream housing
32：Ultrasonic type flow sensor
33：Control base board
Embodiment
Fig. 1 is the front view for the composition for showing the ultrasonic type gas meter involved by present embodiment.Fig. 2 is schematically to show
Go out the in-built sectional view of the ultrasonic type gas meter involved by present embodiment.Ultrasonic type involved by present embodiment
Gas meter is the gas meter measured using a pair of ultrasonic type flow sensors for receiving and dispatching ultrasonic wave to throughput.Ultrasonic type gas
Table mainly includes meter body portion 10, lower cover 20 and measuring means 30.
Meter body portion 10 includes：The body portion main body 10a formed by metal materials such as aluminium, aluminium alloys；And it is located at its front
Resinous protecgulum 10b, the gap between body portion main body 10a and protecgulum 10b is accommodated with control base board etc..
Body portion main body 10a includes at an upper portion thereof：Connect the gas inflow entrance 11a of the pipe arrangement from gas supply source；And
Connect the gas flow outlet 11b of burner etc..Moreover, including reaching gas from gas inflow entrance 11a in body portion main body 10a inside
Body flow export 11b a series of gas flow path 12.
Gas flow path 12 includes inlet fluid path portion 12a, intermediate flow passage portion 12b and outlet flow passage portion 12c, with bending
For the flow path shape of approximate U shape.These flow path portions 12a~12c is from gas inflow entrance 11a to gas flow outlet 11b, with entrance stream
Road portion 12a, intermediate flow passage portion 12b, outlet flow passage portion 12c order arrangement.
Inlet fluid path portion 12a is connected with gas inflow entrance 11a, is formed along above-below direction.In inlet fluid path portion 12a
Between portion be set with circle opening portion 12a1.When being flowed downward from the gas inflow entrance 11a gases flowed into, in opening portion
12a1 flows from the face side (front side) in meter body portion 10 towards rear side (rear side), changes direction afterwards and is flowed again towards lower section
It is dynamic.In opening portion, 12a1 is provided with stop valve (not shown).The valve body of stop valve facing to the back side from just protruding and by opening portion
12a1 is clogged, so as to cut off the flowing of gas in inlet fluid path portion 12a midway.
Outlet flow passage portion 12c is connected with gas flow outlet 11b, same with inlet fluid path portion 12a to be formed along above-below direction.
Intermediate flow passage portion 12b and inlet fluid path portion 12a and outlet flow passage portion 12c are respectively communicated with, and are formed along left and right directions.
In the intermediate flow passage portion, 12b is accommodated and is configured with measuring means 30.
Body portion main body 10a bottom surface is open construction, forms the gas flow path 12 in body portion main body 10a inside and is opening
The bottom surface side put exposes.Lower cover 20 is disposed in the bottom surface in meter body portion 10, nappe portion main body 10a bottom surface side and confining gas
Stream 12.Lower cover 20 is same with body portion main body 10a, is formed by the metal material such as aluminium or aluminium alloy.
Fig. 3 is the stereogram for the major part for schematically showing lower cover 20.In the upper surface of lower cover 20, i.e. and meter body
The inside in portion 10 just to face, be formed with recess 21 along long side direction.Recess 21 includes：It is corresponding with inlet fluid path portion 12a
Entrance recess 21a；Medial concavity 21b corresponding with intermediate flow passage portion 12b；And it is corresponding with outlet flow passage portion 12c go out stomatodeum
Portion 21c.
Entrance recess 21a and outlet recess 21c are compared with medial concavity 21b, the distance (depth) for being formed greatly and on earth
Greatly.The entrance recess 21a and outlet recess 21c of the upper surface side of lower cover 20 peripheral shape are set to and body portion main body 10a
Bottom surface side inlet fluid path portion 12a and outlet flow passage portion 12c peripheral shape it is corresponding.On the other hand, medial concavity 21b quilts
It is set as that its width is corresponding with the outer width of the stream housing 31 of measuring means 30, its depth is the height of stream housing 31
Half or so.
Be formed with supporting part 21a2 in entrance recess 21a the week side of boss wall 21a1, in the present embodiment, be set in respectively with
Corresponding two positions of face side and rear side in meter body portion 10.Medial eminence shape from supporting part 21a2 to entrance recess 21a
Into being continuously formed along the week side of boss wall 21a1 short transverse (above-below direction).
Measuring means 30 mainly includes stream housing 31, a pair of ultrasonic type flow sensors 32 and control base board 33.
Medial concavity 21b and stream housing 31 that stream housing 31 is fixed on lower cover 20 with its downside half insertion axial direction turn into water
Flat mode is disposed in intermediate flow passage portion 12b.Under the configuration status, a pair of ultrasonic type flow sensors 32 are assembled in stream
The upper side of housing 31.
Stream housing 31 is the part of strip tubular, is set to central shaft and gas flow outlet than gas inflow entrance 11a
The distance between 11b central shaft is long, and inlet fluid path portion 12a and another open end face are faced with one open end
Mode to outlet flow passage portion 12c is configured.The gas that 12a flows in inlet fluid path portion is flowed into stream shell from an open end
In body 31, after being flowed in the stream housing 31, outlet flow passage portion 12c is flowed out to from another open end.In stream housing
31 inner laminated is configured with multiple cowling panels (not shown) that rectification is carried out for the flowing to gas.
The stream housing 31 is included in long side direction and separates be positioned apart from 2 required O-ring maintaining parts 36.2 O
Shape ring holding portion 36 is to set the position of the O-rings such as rubber-like, and stream housing 31 is being configured to the situation in medial concavity 21b
Under, respectively positioned at medial concavity 21b both ends.Therefore, the O-ring kept by O-ring maintaining part 36 is close to medial concavity
21b, this is close to position as sealing function.Thus, it is ensured that the sealing of the gas in the entrance recess 21a of lower cover 20
Property so that it will not be flowed into outlet recess 21c via stream housing 31 and medial concavity 21b gap.In addition, O-ring
Also it is close to the side of meter body portion 10 so that gap will not be produced between stream housing 31 and meter body portion 10.
A pair of ultrasonic type flow sensors 32 are reflective units, are sent from a ultrasonic type flow sensor 32
Ultrasonic signal by the bottom reflection of stream housing 31, received by another ultrasonic type flow sensor 32.
Control base board 33 carries out transmission processing and the measurement in propagation time of ultrasonic signal etc..In the upper of stream housing 31
Surface-assembled has for protecting the protective housing of control base board 33 (not shown).
Below, the filter 15 of one of the feature of present embodiment is illustrated.Herein, Fig. 4 is the composition for showing filter 15
Stereogram.Fig. 5 is the explanation figure for schematically showing the state after assembling filter device 15, and Fig. 6 is to schematically show assembling
The explanation figure of state before filter 15.Filter 15 is configured in inlet fluid path portion 12a, the gas to being flowed into measuring means 30
Flowing, i.e. inlet fluid path portion 12a flow gas flowing carry out rectification.The filter 15 is configured in measuring means 30
Near, the downstream area particularly compared with inlet fluid path portion 12a opening portion 12a1.
Filter 15 is mainly included in the cartridge unit 16 and end wall 17 of above-below direction extension.
Cartridge unit 16 is formed as approximate four square tube shape, and its peripheral shape has relative with inlet fluid path portion 12a internal face
The shape answered.The lower end 16c of cartridge unit 16 is opened.In addition, the part in cartridge unit 16 is set with to configure stream housing
31 and required opening 16a.
End wall 17 connects the upper end for being arranged on cartridge unit 16, constitutes approximate with the flowing of the gas in inlet fluid path portion 12a
Vertical face.The gas passage 17a that the opening for being formed with the shape needed for being set as in a part for end wall 17 is constituted.The gas
Path 17a has the function of rectification, because the gas flowed in inlet fluid path portion 12a is by gas passage 17a, so that opposite end
The flowing of the gas in the downstream of wall 17 carries out rectification.Gas passage 17a is set as the required shape determined by rectification function,
In present embodiment, it is included in the 1st approximate rectangular opening 17a1 of the central portion formation of end wall 17；And be open with the 1st
17a1 is adjacent and is formed as the 2nd approximate rectangular opening 17a2 of big width in fore-and-aft direction.
In the filter 15, it is formed with the peripheral part of the lower end 16c sides of cartridge unit 16 towards projection protruding outside
Portion 16b.Jut 16b is set in opening 16a both sides respectively.Predetermined altitude is formed with each jut 16b upper surface
Rib 16b1.Using rib 16b1, the surplus of short transverse (above-below direction) is paid to jut 16b.
On the other hand, body portion main body 10a bottom surface side inlet fluid path portion 12a peripheral part required position, setting
There is groove portion 10a1 corresponding with 2 jut 16b.Jut 16b and groove portion 10a1 are assembled into inlet fluid path portion in filter 15
During 12a, in relation (reference picture 5) chimeric mutually.The height of jut 16b comprising rib 16b1 is set as than the groove portion
10a1 depth is bigger.
In addition, the end wall 17 in filter 15 is vertically arranged with the boss portion 17b that is made up of columnar projection.The opposing party
Face, in body portion, main body 10a inlet fluid path portion 12a required position is formed with upper wall surface, is set with and boss in the upper wall surface
The corresponding convex portions of portion 17b (not shown).Boss portion 17b and convex portion are when filter 15 is assembled into inlet fluid path portion 12a, in phase
The relation (reference picture 2) being mutually fitted together to.
The assembling of from filter 15 to inlet fluid path portion 12a be by the bottom surface side from body portion main body 10a, filter 15 is embedding
Enter to inlet fluid path portion 12a to carry out.As shown in fig. 6, filter 15 is that guide is embedded into inlet fluid path portion with end wall 17
12a。
Now, the boss portion 17b, chimeric with inlet fluid path portion 12a convex portion of end wall 17 is set in, thus, by filter
15 positioning.Equally, a pair of jut 16b for being set in cartridge unit 16 are embedded in and are set in entering for body portion main body 10a bottom surface sides
Mouth flow path portion 12a a pair of groove portion 10a1.
Now, by jut 16b rib 16b1 setting, it is embedded into the lower end (cylinder of inlet fluid path portion 12a filters 15
The lower end 16c of part 16) turn into state slightly prominent compared with inlet fluid path portion 12a peripheral part.
Next, when installing lower cover 20 on body portion main body 10a, body portion main body 10a bottom surface side is covered by lower cover 20, will
Gas flow path 12 is closed.Lower cover 20 is fixed etc. to be crimped by screw is fixed on body portion main body 10a.
The bottom surface that lower cover 20 can cause the pressing force of the lower cover 20 to act on body portion main body 10a is installed.Thus, it is set in cylinder
A pair of jut 16b of part 16 are pressed into inlet fluid path portion 12a groove portion 10a1.In addition, being set in entrance recess 21a
A pair of supporting part 21a2 press the lower end (the lower end 16c of cartridge unit 16) of filter 15, thus, filter 15 is by entrance stream
Road portion 12a inner side press-in, and keep the lower end of lower cover 20 in a pair of supporting part 21a2.
In such a state, filter 15 is embedded into inlet fluid path portion 12a, by inlet fluid path portion 12a inwall face
Receive holding.
By assembling filter device 15, so that the midway configuration gas passage of the flowing of gas in inlet fluid path portion 12a
17a.Gas flows via gas passage 17a, so as to the flowing of the gas in the downstream to end wall 17, is flowed into measurement
The flowing of the gas of unit 30 carries out rectification.As a result, the flow of the gas due to that can suppress to be flowed into measuring means 30
Deviation, surveys therefore, it is possible to suppress to produce the error count of flow, produces the state of affairs that can not be measured.
Further, since the peripheral shape of filter 15 (cartridge unit 16) is set to the internal face with inlet fluid path portion 12a
Corresponding shape, therefore, it is possible to eliminate the gap produced therebetween.Thus, the gas flowed in inlet fluid path portion 12a
The gap of filter 15 and inlet fluid path portion 12a is may not flow into, but in gas passage 17a flowings.As a result, can fit
When obtaining the rectified action that filter 15 is brought.
So, according to present embodiment, filter 15 has：With corresponding with inlet fluid path portion 12a internal face
The cartridge unit 16 of peripheral shape；And connection is arranged on the one end of cartridge unit 16, and with opening as gas passage 17a
The end wall 17 of mouth.Kept moreover, the filter 15 is accommodated by inlet fluid path portion 12a internal face.
Integrally constituted with cartridge unit 16 according to the end wall 17 of this composition, including the gas passage 17a of rectification.Separately
Outside, because the bottom surface side in meter body portion 10 is opened, therefore, by the way that the filter 15 of tubular is embedded into inlet fluid path portion 12a, from
And filter 15 is accommodated and is held in inlet fluid path portion 12a.Thus it is possible to simply in inlet fluid path portion 12a assembling filter devices
15.It therefore, there is no need to the other part for assembling, fixing, number of elements, assembling man-hour can be reduced.Further, since being not required to
The complicated operations such as screw fixation are wanted, therefore, it is possible to improve workability, assembling man-hour are reduced.
In addition, in the present embodiment, filter 15 be embedded into the way of the top that end wall 17 is located at cartridge unit 16 into
Mouth flow path portion 12a.Now, the lower end (the lower end 16c of cartridge unit 16) of filter 15 is formed from the supporting part 21a2 of lower cover 20
Keep.
According to this composition, filter 15 is kept by using supporting part 21a2, is dropped to so as to suppress filter 15
The state of affairs of the inside (entrance recess 21a) of lower cover 20.Further, since lower end (the lower end 16c of cartridge unit 16) quilt of filter 15
The supporting part 21a2 at 2 positions of face side and rear side is kept, and filter 15 is maintained in above-below direction therefore, it is possible to appropriate
Position.
In addition, in the present embodiment, as the positioning unit positioned in inlet fluid path portion 12a to filter 15,
Including：It is vertically arranged in the boss portion 17b of the tubular of end wall 17；And configure in body portion main body 10a inlet fluid path portion 12a
Convex portion.The positioning unit is mutually chimeric with convex portion by boss portion 17b, so that in the face direction of end wall 17 and face vertical direction
Filter 15 is positioned.
, being capable of the suitably position of localization filter 15 and height according to this composition.Further, since only passing through boss portion 17b
With convex portion is mutually chimeric can just be positioned, therefore, it is possible to improve workability.
Also, in the present embodiment, as the fixed cell that filter 15 is fixed in inlet fluid path portion 12a,
Have：Cartridge unit 16 lower end 16c peripheral part towards jut 16b protruding outside；And in neighbouring body portion main body 10a
Bottom surface side inlet fluid path portion 12a peripheral part setting groove portion 10a1.The fixed cell passes through jut 16b and groove portion
10a1 is mutually fitted together to, so that filter 15 be fixed.
It is mutually chimeric with groove portion 10a1 by jut 16b according to this composition, so that filter 15 be fixed, it can press down
Make it and produce loosening.
In addition, in the present embodiment, rib 16b1 is set with jut 16b, jut 16b is ensure that using rib 16b1
Short transverse surplus.Jut 16b is set to protrude rib 16b1 amount from groove portion 10a1, by installing lower cover
20, so that jut 16b is pressed into groove portion 10a1.Thus, filter 15 is firmly fixed, can effectively suppress its generation
Loosen.
In addition, in the present embodiment, filter 15 is only configured in inlet fluid path portion 12a, but it is also possible to only in outlet
Flow path portion 12c the configurating filtered devices 15 or filter 15 is respectively configured in inlet fluid path portion 12a and outlet flow passage portion 12c.Pass through
The 12c the configurating filtered devices 15 in outlet flow passage portion, so as to be set as the composition for being also difficult to be affected by even if generation pulsation.
In addition, the composition for being arranged on outlet flow passage portion 12c filter 15 can be with inlet fluid path portion 12a filter 15 composition phase
Together.
It this concludes the description of the ultrasonic type gas meter involved by present embodiment, but the invention is not restricted to present embodiment,
Various changes can be carried out in the range of the invention.
Claims (3)
1. a kind of gas meter, including：
Body portion main body, it is internally formed with a series of gas flow path from gas inflow entrance to gas flow outlet, and bottom
Face is opened；And
Lower cover, it is disposed in the bottom surface of body portion main body, covers the bottom surface side of body portion main body and closes institute
State gas flow path,
The gas meter is characterised by,
The gas meter has：
Measuring means, it is configured in the gas flow path, is to have sensor in the stream housing over-assemble of tubular and constitute；
And
Filter, it is configured in the vicinity of the measuring means, and the flowing of the gas to being flowed in the gas flow path is carried out
Rectification,
The filter has：
Cartridge unit, it has the peripheral shape corresponding with the internal face of the gas flow path；And
End wall, it connects the one end for being arranged on cartridge part, and with the opening as gas passage,
The filter is accommodated by the internal face of the gas flow path and kept.
2. gas meter as claimed in claim 1, it is characterised in that
The gas flow path includes：
Inlet fluid path portion, it is connected with the gas inflow entrance；
Outlet flow passage portion, it is connected with the gas flow outlet；And
Intermediate flow passage portion, it is not connected with the inlet fluid path portion and the outlet pathway portion, accommodates the measuring means,
The gas flow path has the flow path shape for being bent into approximate U shape,
A flow path portion or two streams of the filter deployment in the inlet fluid path portion and the outlet flow passage portion
Portion.
3. gas meter as claimed in claim 2, it is characterised in that
The filter is embedded into the flow path portion in the way of the upper end that the end wall is located at cartridge part, and
The supporting part that the lower end of the filter is formed from the lower cover is kept.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-007603 | 2016-01-19 | ||
| JP2016007603A JP6326073B2 (en) | 2016-01-19 | 2016-01-19 | Gas meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106979805A true CN106979805A (en) | 2017-07-25 |
| CN106979805B CN106979805B (en) | 2019-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710044200.0A Active CN106979805B (en) | 2016-01-19 | 2017-01-19 | Gas meter |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6326073B2 (en) |
| CN (1) | CN106979805B (en) |
| TW (1) | TWI636239B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6991882B2 (en) * | 2018-02-16 | 2022-01-13 | 愛知時計電機株式会社 | Ultrasonic flow meter |
| JP2020003465A (en) * | 2018-07-02 | 2020-01-09 | 東洋計器株式会社 | Structure for preventing wrong assembly of component for measuring flow rate of gas meter |
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| CN201600155U (en) * | 2010-01-29 | 2010-10-06 | 上海一诺仪表有限公司 | Built-in rectifier of gas ultrasonic flow sensor |
| CN202994224U (en) * | 2012-06-01 | 2013-06-12 | 矢崎能源系统公司 | Flow measuring device |
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| CN103759774A (en) * | 2014-01-13 | 2014-04-30 | 浙江威星智能仪表股份有限公司 | Method for designing rectifier of ultrasonic flowmeter |
| JP2015148525A (en) * | 2014-02-07 | 2015-08-20 | 愛知時計電機株式会社 | ultrasonic gas meter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6326073B2 (en) | 2018-05-16 |
| CN106979805B (en) | 2019-09-17 |
| JP2017129391A (en) | 2017-07-27 |
| TW201736807A (en) | 2017-10-16 |
| TWI636239B (en) | 2018-09-21 |
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