CN206683706U - A kind of gas meter, flow meter stroke adjustable structure - Google Patents
A kind of gas meter, flow meter stroke adjustable structure Download PDFInfo
- Publication number
- CN206683706U CN206683706U CN201720295546.3U CN201720295546U CN206683706U CN 206683706 U CN206683706 U CN 206683706U CN 201720295546 U CN201720295546 U CN 201720295546U CN 206683706 U CN206683706 U CN 206683706U
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- CN
- China
- Prior art keywords
- gas meter
- connecting rod
- crank gear
- arm
- flow meter
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- 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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Abstract
The utility model discloses a kind of gas meter, flow meter stroke adjustable structure, including the crank gear covered installed in Gas meter valve, the crank gear surrounds crankshaft rotation, connecting rod is connected on the crank gear, one end connection of the connecting rod affects arm, it is described to affect arm to be arranged in Gas meter valve body on vertical shaft, the lower section installation barrier film of the vertical shaft.Gas meter, flow meter stroke adjustable structure provided by the utility model, measuring accuracy is solved dependent on parts and this drawback of assembling fine setting, substantially increase the measuring accuracy of gas meter, flow meter, reduce the dispersiveness of error characteristics curve under different flow, make the error characteristics curve of diaphragm gas meter more smooth, expand the range ratio of instrument.
Description
Technical field
The utility model relates to gas meter, flow meter technical field, and in particular to a kind of gas meter, flow meter stroke adjustable structure.
Background technology
Diaphragm gas meter is a kind of self-driven measuring instrument, and shuttle measuring room inlet and outlet process to be controlled very
The accurate stability that just can guarantee that metering.Under normal circumstances, the reciprocally swinging for measuring diaphragm with fixed volume in measuring room
Sequentially, with measuring room to dispense valve strict coordination consistent.But because rubber diaphragm size is difficult to control, in homogeneity of product side
There is larger difference in face, and measuring accuracy manufactures and assembled fine setting dependent on part, and measuring accuracy is not high, and dispersiveness is larger.For
Insufficient present on prior art, this programme provides a kind of gas meter, flow meter stroke adjustable structure, using adjustable connecting-rod structure, abandons biography
The unadjustable connecting rod of entity formula.
Utility model content
To be to provide a kind of gas meter, flow meter stroke adjustable to solve the technical scheme that uses of above-mentioned technical problem for the utility model
Structure, wherein, concrete structure is：
Including the crank gear covered installed in Gas meter valve, the crank gear surrounds crankshaft rotation, the crank
Connecting rod is connected on gear, one end connection of the connecting rod affects arm, described to affect arm to be arranged in Gas meter valve body on vertical shaft, institute
State the lower section installation barrier film of vertical shaft.
Above-mentioned gas meter, flow meter stroke adjustable structure, wherein：The connecting rod is arranged to the form of connecting rod assembly, the connection rod set
Conjunction includes two connecting rods, and one end of two connecting rods is arranged on crank gear by fixing axle, the other end difference of two connecting rods
Connection affects arm.
Above-mentioned gas meter, flow meter stroke adjustable structure, wherein：The quantity for affecting arm is 2, described to affect arm one end to consolidate
Surely vertical shaft is connected, the other end is flexibly connected connecting rod.
The utility model has the advantages that relative to prior art：
The vertical shaft that barrier film is affected does reciprocal oscillating motion, and a shared crank is affected by affecting arm, connecting rod to go
Gear, when the moment of torsion difference that crank gear receives certain cycle (at 90 °), driven with regard to that can accomplish continuously to rotate, and by it
Bonnet changes the direction of air inlet/outlet and drives counting device, reaches the purpose of continuous automatic metering.
Brief description of the drawings
Fig. 1 is the schematic diagram of gas meter, flow meter stroke adjustable structure.
Fig. 2 is the schematic diagram of gas meter, flow meter stroke adjustable structure.
Fig. 3 is the schematic diagram of gas meter, flow meter stroke adjustable structure.
In figure：
The connecting rod assembly 3 of 1 crank gear 2 affects the vertical shaft of 4 diaphragm assembly of arm, 5 barrier film 6
Embodiment
The utility model will be further described with reference to the accompanying drawings and examples.
The operation principle of the diaphragm gas meter of early stage is limit-type, i.e., gas meter measuring room is in one circulation of reciprocating motion
During, just change the direction of motion after limitation point is touched in extreme position, to ensure the body of the gas of gas meter, flow meter discharge
Product is a fixed revolution bulking value.Measuring accuracy manufactures and assembled fine setting dependent on part, and measuring accuracy is not high, dispersiveness
It is larger.
In view of the above-mentioned problems, a kind of gas meter, flow meter stroke adjustable structure solves measuring accuracy dependent on parts and assembled micro-
This drawback adjusted, the measuring accuracy of gas meter, flow meter is substantially increased, reduces the dispersiveness of error characteristics curve under different flow,
Make the error characteristics curve of diaphragm gas meter more smooth, expand the range ratio of instrument；Can be oblique to the error curve of gas meter, flow meter
Rate is adjusted, and to improve the measuring accuracy of gas meter, flow meter, reduces error diffusion
The motive force of motion of membrane is the gas pressure difference by gas meter, flow meter import and export.Its driving source is by higher than normal
The tested gas of pressure enters the side intracavitary of barrier film, and caused pressure, push barrier film is mobile to opposite side and caused motive force
(moment of torsion that the vertical shaft original place that namely barrier film is affected rotates) is when barrier film moves on to the limit (also having referred to as dead point) of opposite side
During position, torque, which no longer produces, can allow barrier film to return to the power of coming, and must just lean on second barrier film to produce same power in succession and carry out band
Move previous barrier film and do return movement；When the gas outlet for changing first barrier film is air inlet, the opposite side of this barrier film is again
There is the motive force of gas and continue to do back and forth movement, and can also change the moving direction of second barrier film.
The gas meter, flow meter stroke adjustable structure that application scheme provides, including the crank gear 1 covered installed in Gas meter valve,
The crank gear 1 surrounds crankshaft rotation, and connecting rod is connected on the crank gear 1, and one end connection of the connecting rod affects arm
3, described to affect arm 3 to be arranged in Gas meter valve body on vertical shaft 6, the lower section installation barrier film 5 of the vertical shaft 6.
The connecting rod is arranged to the form of connecting rod assembly 2, and the connecting rod assembly 2 includes two connecting rods, and the one of two connecting rods
End is arranged on crank gear 1 by fixing axle, and the other end of two connecting rods connects respectively affects arm 3, the number for affecting arm 3
Measure as 2, described to affect the one end of arm 3 to be fixedly connected with vertical shaft 6, the other end is flexibly connected connecting rod.
The vertical shaft 6 that barrier film 5 is affected does reciprocal oscillating motion, and a shared song is affected by affecting arm 3, connecting rod to go
Handle gear 1, when the moment of torsion difference that crank gear 1 receives certain cycle (at 90 °), with regard to that can accomplish continuously to rotate, and by it
Bonnet is driven to change the direction of air inlet/outlet and drive counting device, reaches the purpose of continuous automatic metering.
Take a crank gear 1 to be inserted in crank axle, with connecting rod assembly connecting crank gear 1 and arm 3 is affected, in two limit positionses
Front and rear vibration connecting rod, whether in place to check stroke, rule of thumb situation suitably adjusts length of connecting rod, until each limit point is elastic suitable
Preferably.
By this series of design, the measuring accuracy of gas meter, flow meter is substantially increased, it is special to reduce error under different flow
The dispersiveness of linearity curve, make the error characteristics curve of diaphragm gas meter more smooth, expand the range ratio of instrument.
Although the utility model is disclosed as above with preferred embodiment, so it is not limited to the utility model, any
Those skilled in the art, do not departing from spirit and scope of the present utility model, when a little modification and perfect, therefore this can be made
The protection domain of utility model is worked as to be defined by what claims were defined.
Claims (3)
- A kind of 1. gas meter, flow meter stroke adjustable structure, it is characterised in that：It is described including the crank gear covered installed in Gas meter valve Crank gear surrounds crankshaft rotation, connecting rod is connected on the crank gear, one end connection of the connecting rod affects arm, described to lead Swing arm is arranged in Gas meter valve body on vertical shaft, the lower section installation barrier film of the vertical shaft.
- 2. gas meter, flow meter stroke adjustable structure as claimed in claim 1, it is characterised in that：The connecting rod is arranged to connecting rod assembly Form, the connecting rod assembly include two connecting rods, and one end of two connecting rods is arranged on crank gear by fixing axle, two companies The other end of bar connects respectively affects arm.
- 3. gas meter, flow meter stroke adjustable structure as claimed in claim 2, it is characterised in that：The quantity for affecting arm is 2, institute State and affect arm one end to be fixedly connected with vertical shaft, the other end is flexibly connected connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295546.3U CN206683706U (en) | 2017-03-24 | 2017-03-24 | A kind of gas meter, flow meter stroke adjustable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720295546.3U CN206683706U (en) | 2017-03-24 | 2017-03-24 | A kind of gas meter, flow meter stroke adjustable structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206683706U true CN206683706U (en) | 2017-11-28 |
Family
ID=60390038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720295546.3U Active CN206683706U (en) | 2017-03-24 | 2017-03-24 | A kind of gas meter, flow meter stroke adjustable structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206683706U (en) |
-
2017
- 2017-03-24 CN CN201720295546.3U patent/CN206683706U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210105 Address after: 201700 building 4, 6558 Yinggang East Road, Qingpu District, Shanghai Patentee after: Shanghai Zhenlan Instrument Technology Co.,Ltd. Address before: 201700 301, 3rd floor, building 4, No. 6558, Yinggang East Road, Qingpu District, Shanghai Patentee before: SHANGHAI ZENNER GAS EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |