CN216144383U - Diaphragm type gas meter - Google Patents
Diaphragm type gas meter Download PDFInfo
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- CN216144383U CN216144383U CN202121882006.8U CN202121882006U CN216144383U CN 216144383 U CN216144383 U CN 216144383U CN 202121882006 U CN202121882006 U CN 202121882006U CN 216144383 U CN216144383 U CN 216144383U
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Abstract
The utility model discloses a membrane type gas meter, which comprises a rotary valve seat, a rotary valve cover, a membrane box, two flag pieces, two vertical shafts, two swing rods, two connecting rods, a crank gear structure, an intermediate wheel and a transmission gear, wherein the flag pieces comprise a horizontal section and an inclined section which are mutually connected; flag locating holes matched with the locating columns are arranged in the diaphragm boxes. According to the utility model, the bottom of the positioning column is hemispherical, so that the friction force between the positioning column and the positioning hole arranged in the diaphragm capsule in the gas meter is reduced, the flexibility and stability of flag piece rotation are improved, and the performance of the metering precision and stability of the gas meter is improved.
Description
Technical Field
The utility model relates to the technical field of gas meter metering, in particular to a membrane type gas meter.
Background
In recent years, with the popularization and application of natural gas, the popularization range and the number of people are rapidly developed. The metering of natural gas is also evolving with the widespread use of natural gas. The gas meter becomes an important and indispensable ring for connecting between a gas company and a user, the diaphragm type gas meter is a gas meter which is widely applied at present, the driving force of the movement of the diaphragm type gas meter depends on the gas pressure difference at the inlet and the outlet of the gas meter, the flag piece inside the diaphragm type gas meter is used as the foremost transmission chain of the mechanism operation, the rotation flexibility and the stability of the diaphragm type gas meter directly influence the measurement precision, the stability and other performances of the gas meter, but the rotation structural design of the flag piece in the current diaphragm type gas meter is not reasonable enough, so that the measurement accuracy and the stability of the diaphragm type gas meter are also influenced to a certain extent.
SUMMERY OF THE UTILITY MODEL
The utility model provides a diaphragm type gas meter, aiming at solving the problem that the metering accuracy and stability of the gas meter are influenced due to the fact that the rotating structure design of flag pieces in the existing diaphragm type gas meter is not reasonable enough.
The technical solution of the utility model is as follows:
a diaphragm type gas table which characterized in that: comprises that
The rotary valve seat is provided with an air inlet and an air outlet;
the rotary valve cover is arranged above the rotary valve seat, is provided with a notch for gas to enter or exhaust, and can rotate relative to the rotary valve seat to control the air inlet amount of the air inlet and the air outlet amount of the air outlet of the rotary valve seat;
the movement comprises a diaphragm capsule, a cavity is arranged in the diaphragm capsule, and two metering chambers are arranged in the diaphragm capsule;
the two flag pieces are respectively arranged in the two metering chambers, are fixedly connected with the two involucra arranged in the metering chambers and are driven by the involucra to swing respectively;
the two vertical shafts are respectively sleeved in sleeve holes of the diaphragm box and can swing in the sleeve holes, and one end of each vertical shaft is fixedly connected with the flag piece corresponding to the same side and swings integrally with the flag piece;
each swing rod is fixedly connected with the other end of the corresponding vertical shaft on the same side and swings integrally with the vertical shaft;
one end of each connecting rod is hinged with the corresponding swing rod on the same side and swings under the driving of the swing rod, and the other end of each connecting rod is provided with a traction through hole;
the crank gear structure comprises a crank gear, a crank gear shaft and a crank shaft, wherein the crank shaft is eccentrically formed on one side of the crank gear, which is far away from the rotary valve cover, the traction through holes of the two connecting rods are sleeved on the crank shaft and can drive the crank shaft to rotate around the plane where the crank gear shaft is located, and the crank gear shaft integrally rotate along with the crank shaft;
the intermediate wheel is meshed with the crank gear and driven by the crank gear to rotate;
the transmission gear is meshed with the intermediate wheel, is driven by the intermediate wheel to rotate and is connected with a counter of the gas meter, and the counter is driven by the rotation of the transmission gear to measure the gas;
the flag piece comprises a horizontal section and an inclined section which are mutually connected, the other side of the horizontal section is connected with a leather membrane of the gas meter, the other side of the inclined section is connected with an installation piece, a vertical shaft installation hole is formed in the top of the installation piece, the vertical shaft is respectively and fixedly connected with the flag piece corresponding to the same side through the vertical shaft installation hole, the bottom of the installation piece is closed, a positioning column is arranged in the center of the bottom of the installation piece, and the end part of the positioning column is hemispherical;
flag locating holes matched with the locating columns are formed in the diaphragm boxes.
Furthermore, a plurality of rectangular through holes are formed in the horizontal section, and the rectangular through holes can reduce the deformation of the flag piece and simultaneously can keep the strength.
The gas meter further comprises a leather diaphragm clamping plate, and the leather diaphragm clamping plate is fixedly connected with a leather diaphragm of the gas meter;
a convex column is arranged at one end of the horizontal section far away from the inclined section, and convex heads are correspondingly arranged at the top and the bottom of the convex column;
the leather membrane clamping plate is in sliding connection with the raised head through a sliding guide groove arranged on the leather membrane clamping plate;
the horizontal section is provided with a convex rib at one side close to the leather membrane clamping plate, and the convex rib is positioned at one side close to the convex column.
Compared with the prior art, the utility model has the beneficial effects that:
(1) the end part of the positioning column of the flag piece is hemispherical, the contact surface between the end part of the positioning column of the flag piece and the bottom of the positioning hole of the flag piece in the diaphragm box is small, friction force between the positioning column and the bottom of the positioning hole of the flag piece is reduced, the flag piece in the gas meter is used as a foremost transmission chain for the mechanism to operate, rotation flexibility and stability of the gas meter are improved, and measurement accuracy and stability performance of the gas meter are improved.
(2) When the gas pushes the leather diaphragm to the limit position, if two opposite surfaces of the leather diaphragm clamping plate and the flag piece are completely attached and contacted, the noise is generated, the convex rib is arranged on the flag piece and separates the leather diaphragm clamping plate from the flag piece, and when the convex rib is close to the leather diaphragm clamping plate, the contact area is small, the noise is greatly reduced, and the user experience is improved.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of the structure of the vertical shaft, flag piece and movement assembly;
FIG. 3 is a schematic view of a flag piece;
FIG. 4 is a schematic top view of the flag assembled with the leather splint;
FIG. 5 is a schematic top view of the flag;
1-rotary valve seat, 11-air inlet, 12-air outlet, 2-rotary valve cover, 3-diaphragm capsule, 31-metering chamber, 4-flag piece, 41-horizontal section, 411-rectangular through hole, 42-inclined section, 43-convex column, 431-convex head, 44-mounting piece, 441-positioning column, 45-convex rib, 5-vertical shaft, 6-oscillating bar, 7-connecting rod, 71-pulling through hole, 8-crank gear, 81-crank gear shaft, 82-crank shaft, 9-idle wheel, 10-transmission gear, 111-sliding guide groove and 13-diaphragm.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
As shown in fig. 1-5, the diaphragm gas meter comprises
The rotary valve seat 1 is provided with an air inlet 11 and an air outlet 12;
the rotary valve cover 2 is arranged above the rotary valve seat 1, is provided with a notch for gas to enter or exhaust, and can rotate relative to the rotary valve seat 1 to control the air inlet amount of an air inlet 11 and the air outlet amount of an air outlet 12 of the rotary valve seat 1;
the movement comprises a diaphragm capsule 3, a cavity is arranged in the diaphragm capsule 3, and two metering chambers 31 are arranged in the diaphragm capsule 3;
the two flag pieces 4 are respectively arranged in the two metering chambers 31, are fixedly connected with two involucra arranged in the metering chambers 31 and are driven by the involucra to swing respectively;
two vertical shafts 5 which are respectively sleeved in the sleeve holes of the film box 3 and can swing in the sleeve holes, one end of each vertical shaft 5 is fixedly connected with the flag 4 corresponding to the same side and swings integrally with the flag 4;
each oscillating bar 6 is fixedly connected with the other end of the corresponding vertical shaft 5 at the same side and oscillates integrally with the vertical shaft 5;
one end of each connecting rod 7 is hinged with the corresponding swing rod 6 on the same side and swings under the driving of the swing rod 6, and the other end of each connecting rod 7 is provided with a traction through hole 71;
the crank gear structure comprises a crank gear 8, a crank gear shaft 81 and a crank shaft 82, wherein the crank shaft 82 is eccentrically formed on one side of the crank gear 8, which is far away from the rotary valve cover 2, the pulling through holes 71 of the two connecting rods 7 are sleeved on the crank shaft 82 and can drive the crank shaft 82 to rotate around the plane of the crank gear shaft 81, and the crank gear 8 and the crank gear shaft 81 rotate integrally with the crank shaft 82;
the intermediate wheel 9 is meshed with the crank gear 8 and driven by the crank gear 8 to rotate;
the transmission gear 1 is meshed with the intermediate wheel 9, is driven by the intermediate wheel 9 to rotate and is connected with a counter of the gas meter, and the counter is driven by the rotation of the transmission gear 1 to meter the gas;
the flag 4 comprises a horizontal section 41 and an inclined section 42 which are connected with each other, the horizontal section 41 is provided with a plurality of rectangular through holes 411, the deformation of the flag 4 can be reduced, and the strength can be kept, the other side of the horizontal section 41 is connected with a membrane of a gas meter, the other side of the inclined section 42 is connected with an installation part 44, the top of the installation part 44 is provided with a vertical shaft installation hole, a vertical shaft 5 is respectively and fixedly connected with the corresponding flag 4 on the same side through the vertical shaft installation hole, the bottom of the installation part 44 is closed, a positioning column 441 is arranged in the center of the bottom of the installation part 44, and the end part of the positioning column 441 is hemispherical;
the diaphragm box 3 is provided with a flag positioning hole 32 matched with the positioning column 441.
The diaphragm gas meter also comprises a diaphragm clamping plate 13, and the diaphragm clamping plate 13 is fixedly connected with a diaphragm of the gas meter; one end of the horizontal section 41 far away from the inclined section 42 is provided with a convex column 43, and the top and the bottom of the convex column 43 are correspondingly provided with convex heads 431; the leather diaphragm clamping plate 13 is in sliding connection with the raised head 431 through a sliding guide groove 111 arranged on the leather diaphragm clamping plate; the horizontal section 41 is provided with a convex rib 45 on one side close to the leather diaphragm clamping plate 13, and the convex rib 45 is positioned on one side close to the convex column 43.
When the diaphragm type gas meter works, gas enters the metering chamber 31 on one side from the gas inlet 11 to push the diaphragm to swing freely, the diaphragm in the metering chamber 31 pushes the diaphragm clamping plate 13, the flag piece 4 slides on the diaphragm clamping plate 13, meanwhile, the flag piece 4 rotates around the positioning column 441, the friction between the positioning column 441 and the bottom surface of the flag piece positioning hole is small, the flag piece 4 rotates flexibly and stably, the vertical shaft 5 rotates stably under the driving of the flag piece 4, the oscillating rod 6 pulls the connecting rod 7, the connecting rod 7 drives the crank shaft to rotate around the plane where the crank gear shaft is located, the crank gear 8 and the crank gear shaft rotate integrally along with the crank shaft, the crank gear 8 drives the valve cover 2 to rotate to distribute the flow of the entering gas, so that the gas enters the metering chamber 31 on the other side in sequence, and the diaphragm in the metering chamber 31 reciprocates to output power; in the two metering chambers 31, when the gas pushes the leather membrane to the limit position each time, the convex rib 45 enables a gap to exist between two opposite surfaces of the leather membrane clamping plate and the flag 4, and noise generated when the two surfaces are attached is reduced.
The above disclosure is only for the specific embodiment of the present invention, but the embodiment of the present invention is not limited thereto, and any variations that can be made by those skilled in the art should fall within the scope of the present invention.
Claims (3)
1. A diaphragm type gas table which characterized in that: comprises that
The rotary valve seat (1) is provided with an air inlet (11) and an air outlet (12);
the rotary valve cover (2) is arranged above the rotary valve seat (1), is provided with a notch for gas to enter or exhaust, and can rotate relative to the rotary valve seat (1) to control the air inlet amount of the air inlet (11) and the air outlet amount of the air outlet (12) of the rotary valve seat (1);
the movement comprises a diaphragm capsule (3), a cavity is arranged in the diaphragm capsule (3), and two metering chambers (31) are arranged in the diaphragm capsule (3);
the two flag pieces (4) are respectively arranged in the two metering chambers (31), are fixedly connected with two involucra arranged in the metering chambers (31), and are driven by the involucra to swing respectively;
the two vertical shafts (5) are respectively sleeved in sleeve holes of the diaphragm boxes (3) and can swing in the sleeve holes, one end of each vertical shaft (5) is fixedly connected with the flag pieces (4) corresponding to the same side and swings integrally with the flag pieces (4);
each swing rod (6) is fixedly connected with the other end of the corresponding vertical shaft (5) at the same side and swings integrally with the vertical shaft (5);
one end of each connecting rod (7) is hinged with the corresponding swing rod (6) on the same side and driven by the swing rod (6) to swing, and the other end of each connecting rod (7) is provided with a traction through hole (71);
the crank gear structure comprises a crank gear (8), a crank gear shaft (81) and a crank shaft (82), wherein the crank shaft (82) is eccentrically formed on one side, away from the rotary valve cover (2), of the crank gear (8), the traction through holes (71) of the two connecting rods (7) are sleeved on the crank shaft (82) and can drive the crank shaft (82) to rotate around the plane where the crank gear shaft (81) is located, and the crank gear (8) and the crank gear shaft (81) integrally rotate along with the crank shaft (82);
the intermediate wheel (9) is meshed with the crank gear (8) and driven by the crank gear (8) to rotate;
the transmission gear (10) is meshed with the intermediate wheel (9), is driven by the intermediate wheel (9) to rotate and is connected with a counter of the gas meter, and the counter is driven by the rotation of the transmission gear (10) to meter the gas;
the flag piece (4) comprises a horizontal section (41) and an inclined section (42) which are connected with each other, the other side of the horizontal section (41) is connected with a leather membrane of the gas meter, the other side of the inclined section (42) is connected with an installation part (44), a vertical shaft installation hole is formed in the top of the installation part (44), a vertical shaft (5) is fixedly connected with the flag piece (4) corresponding to the same side through the vertical shaft installation hole, the bottom of the installation part (44) is closed, a positioning column (441) is arranged in the center of the bottom of the installation part, and the end part of the positioning column (441) is hemispherical;
flag locating holes (32) matched with the locating columns (441) are formed in the diaphragm boxes (3).
2. A diaphragm gas meter as set forth in claim 1, wherein: the horizontal section (41) is provided with a plurality of rectangular through holes (411).
3. A diaphragm gas meter as set forth in claim 1, wherein: the device also comprises a film clamping plate (13), wherein the film clamping plate (13) is fixedly connected with a film in the metering chamber (31);
a convex column (43) is arranged at one end of the horizontal section (41) far away from the inclined section (42), and convex heads (431) are correspondingly arranged at the top and the bottom of the convex column (43);
the leather diaphragm clamping plate (13) is in sliding connection with the raised head (431) through a sliding guide groove (111) arranged on the leather diaphragm clamping plate;
one side of the horizontal section (41) close to the leather membrane clamping plate (13) is provided with a convex rib (45), and the convex rib (45) is positioned at one side close to the convex column (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121882006.8U CN216144383U (en) | 2021-08-12 | 2021-08-12 | Diaphragm type gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121882006.8U CN216144383U (en) | 2021-08-12 | 2021-08-12 | Diaphragm type gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216144383U true CN216144383U (en) | 2022-03-29 |
Family
ID=80805091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121882006.8U Active CN216144383U (en) | 2021-08-12 | 2021-08-12 | Diaphragm type gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216144383U (en) |
-
2021
- 2021-08-12 CN CN202121882006.8U patent/CN216144383U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230629 Address after: 4th Floor, Metrology Building, No. 271 Aerospace West Road, National Civil Aerospace Industry Base, Xi'an City, Shaanxi Province, 710100 Patentee after: XI'AN HANGLI TECHNOLOGY Co.,Ltd. Address before: 710077 No. 78, Kam Yip Road, hi tech Zone, Shaanxi, Xi'an Patentee before: SHAANXI AEROSPACE POWER HIGH-TECH Co.,Ltd. |