CN204388925U - Flow-guiding structure before a kind of gas meter - Google Patents
Flow-guiding structure before a kind of gas meter Download PDFInfo
- Publication number
- CN204388925U CN204388925U CN201420826479.XU CN201420826479U CN204388925U CN 204388925 U CN204388925 U CN 204388925U CN 201420826479 U CN201420826479 U CN 201420826479U CN 204388925 U CN204388925 U CN 204388925U
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- China
- Prior art keywords
- shaped
- impeller
- gas channel
- gas
- kuppe
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Abstract
The utility model relates to flow-guiding structure before a kind of gas meter, comprise former dome, body, rear kuppe, gas channel and impeller, described former dome, the coaxial assembling of order successively of body and rear kuppe, kuppe, the gas channel be axially communicated with all is shaped with in body and rear kuppe, water conservancy diversion sphere is coaxially shaped with in the middle part of the axial outer end of described former dome, gas in the middle part of pipeline is through water conservancy diversion spherical transition outside Zhou Liudong smoothly, on the former dome end face of water conservancy diversion sphere periphery, radial equipartition is shaped with the gas channel of multistage arc, the two ends of gas channel are all made as semicircular arc transition.The utility model structure is simple, reliable and stable, highly sensitive, accurate measurement, and the ability of anti-dielectric corrosion is strong, and water conservancy diversion is effective, little to gas-flow resistance, and measuring accuracy is high, and mounting structure simple, be convenient to safeguard.
Description
Technical field
The utility model belongs to instrument manufacture field, flow-guiding structure before especially a kind of gas meter.
Background technology
Gas meter is mounted in the volumetric flow rate of meter gaseous in pipeline, and display reading directly indicates matter person's flow of gas, all can select under the condition of normal pressure, high pressure or negative pressure, realizes discharge record after also can coordinating with other instrument.Existing flowmeter is too simple, exists and rub, affect velocity of rotation flexibility ratio during impeller Forced rotation and between mounting structure, and flow-guiding structure and impeller installation cooperation cause the deviation to gas volume detection, can affect the accuracy of flowmeter.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides that a kind of structure is simple, reliable and stable, highly sensitive, flow-guiding structure before the gas meter of accurate measurement.
The utility model solves its technical matters and takes following technical scheme to realize:
Flow-guiding structure before a kind of gas meter, comprise former dome, body, rear kuppe, gas channel and impeller, described former dome, the coaxial assembling of order successively of body and rear kuppe, kuppe, the gas channel be axially communicated with all is shaped with in body and rear kuppe, it is characterized in that: in the middle part of the axial outer end of described former dome, be coaxially shaped with water conservancy diversion sphere, gas in the middle part of pipeline is through water conservancy diversion spherical transition outside Zhou Liudong smoothly, on the former dome end face of water conservancy diversion sphere periphery, radial equipartition is shaped with the gas channel of multistage arc, the two ends of gas channel are all made as semicircular arc transition.
And described gas channel is 2 to 8 sections of radial equipartition.
And, described body central is coaxially shaped with an axis hole, coaxially installs impeller axle in this axis hole, and the axial two ends of body are stretched out at these impeller axle two ends respectively, impeller shaft end portion in former dome is coaxially fixed with impeller, and this impeller periphery radial equipartition is shaped with the blade of multiple same angular slope; Impeller shaft end portion in rear kuppe is coaxially fixed with a detection runner, is fixed with one for detecting the paster of rotating cycle in the middle part of radial direction one sidewall of this detection runner; Detection through hole is shaped with in the radial side of the rear kuppe detecting runner correspondence position.
Advantage of the present utility model and good effect are:
The utility model structure is simple, reliable and stable, highly sensitive, accurate measurement, and water conservancy diversion is effective, little to gas-flow resistance, and the ability of anti-dielectric corrosion is strong, and measuring accuracy is high, and mounting structure simple, be convenient to safeguard.
Accompanying drawing explanation
Fig. 1 is the utility model contour structures schematic diagram;
Fig. 2 is the right view of Fig. 1;
Fig. 3 cuts open schematic enlarged-scale view in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
Flow-guiding structure before a kind of gas meter, comprise former dome 3, body 2, rear kuppe 1, gas channel 5 and impeller 6, the coaxial assembling of order successively of described former dome, body and rear kuppe, the gas channel be axially communicated with all is shaped with in kuppe, body and rear kuppe, impeller is coaxially installed with in body, this impeller is rotated by the air stream drives flow through in gas channel, by detecting the airshed passed through in the vane rotary number of turns and rotational speed calculating pipeline.
Innovative point of the present utility model is:
Body central is coaxially shaped with an axis hole, impeller axle 8 is coaxially installed in this axis hole, the axial two ends of body are stretched out at these impeller axle two ends respectively, and the impeller shaft end portion in former dome is coaxially fixed with impeller, and this impeller periphery radial equipartition is shaped with the blade 7 of multiple same angular slope; Impeller shaft end portion in rear kuppe is coaxially fixed with a detection runner 9, is fixed with one for detecting the paster of rotating cycle in the middle part of radial direction one sidewall of this detection runner.
Water conservancy diversion sphere 4 is coaxially shaped with in the middle part of the axial outer end of former dome, gas in the middle part of pipeline is through water conservancy diversion spherical transition outside Zhou Liudong smoothly, on the former dome end face of water conservancy diversion sphere periphery, radial equipartition is shaped with the gas channel of three sections of arcs, and the two ends of gas channel are all made as semicircular arc transition.
Rear pod body structure is identical with former dome, detection through hole is shaped with in the radial side of the rear kuppe detecting runner correspondence position, detecting device catches the paster detected on runner by this detection through hole, impeller often turns over a circle, can detect once thus obtain the rotating speed of impeller and the number of turns of rotation.
The parts of this structure adopt stainless steel material machine work to make respectively, and structural strength is high, corrosion-resistant, long service life.
Although disclose embodiment of the present utility model and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the utility model and claims, various replacement, change and amendment are all possible, therefore, scope of the present utility model is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (3)
1. flow-guiding structure before a gas meter, comprise former dome, body, rear kuppe, gas channel and impeller, described former dome, the coaxial assembling of order successively of body and rear kuppe, kuppe, the gas channel be axially communicated with all is shaped with in body and rear kuppe, it is characterized in that: in the middle part of the axial outer end of described former dome, be coaxially shaped with water conservancy diversion sphere, gas in the middle part of pipeline is through water conservancy diversion spherical transition outside Zhou Liudong smoothly, on the former dome end face of water conservancy diversion sphere periphery, radial equipartition is shaped with the gas channel of multistage arc, the two ends of gas channel are all made as semicircular arc transition.
2. flow-guiding structure before gas meter according to claim 1, is characterized in that: described gas channel is 2 to 8 sections of radial equipartition.
3. flow-guiding structure before gas meter according to claim 1, it is characterized in that: described body central is coaxially shaped with an axis hole, impeller axle is coaxially installed in this axis hole, the axial two ends of body are stretched out at these impeller axle two ends respectively, impeller shaft end portion in former dome is coaxially fixed with impeller, and this impeller periphery radial equipartition is shaped with the blade of multiple same angular slope; Impeller shaft end portion in rear kuppe is coaxially fixed with a detection runner, is fixed with one for detecting the paster of rotating cycle in the middle part of radial direction one sidewall of this detection runner; Detection through hole is shaped with in the radial side of the rear kuppe detecting runner correspondence position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420826479.XU CN204388925U (en) | 2014-12-22 | 2014-12-22 | Flow-guiding structure before a kind of gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420826479.XU CN204388925U (en) | 2014-12-22 | 2014-12-22 | Flow-guiding structure before a kind of gas meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204388925U true CN204388925U (en) | 2015-06-10 |
Family
ID=53361636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420826479.XU Expired - Fee Related CN204388925U (en) | 2014-12-22 | 2014-12-22 | Flow-guiding structure before a kind of gas meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204388925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197574A (en) * | 2016-08-30 | 2016-12-07 | 重庆前卫克罗姆表业有限责任公司 | The measuring room assembly of turbine gas meter, flow meter |
-
2014
- 2014-12-22 CN CN201420826479.XU patent/CN204388925U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197574A (en) * | 2016-08-30 | 2016-12-07 | 重庆前卫克罗姆表业有限责任公司 | The measuring room assembly of turbine gas meter, flow meter |
| CN106197574B (en) * | 2016-08-30 | 2023-11-28 | 德国埃尔斯特公司 | Metering chamber assembly of turbine gas meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20151222 |
|
| EXPY | Termination of patent right or utility model |