CN203893893U - Gas turbine meter free of magnetic eddy resistance - Google Patents
Gas turbine meter free of magnetic eddy resistance Download PDFInfo
- Publication number
- CN203893893U CN203893893U CN201420231299.7U CN201420231299U CN203893893U CN 203893893 U CN203893893 U CN 203893893U CN 201420231299 U CN201420231299 U CN 201420231299U CN 203893893 U CN203893893 U CN 203893893U
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- China
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- rotating shaft
- fixing frame
- core fixing
- locating rack
- gas turbine
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Abstract
The utility model relates to a gas turbine meter free of magnetic eddy resistance. The gas turbine meter comprises a flow sensor and an integrating instrument; the flow sensor comprises a shell with a throughflow hole, a front guide, a machine-core component and a rear guide, wherein the front guide, the machine-core component and the rear guide are located in the throughflow hole of the shell; the machine-core component comprises an impeller, a rotating shafts, bearings, a signal transmitting disc, a machine-core fixing frame and a rotating-shaft positioning frame; the integrating instrument comprises a signal detector, a pressure sensor and a secondary computing instrument, and the signal detector and the pressure sensor are fixed in the shell; the machine-core fixing frame and the rear guide are sealed through a sealing ring, the signal transmitting disc and the rear bearing are located in a chamber formed by the machine-core fixing frame and the rear guide, the rear guide is a nonmetal part, and the signal detector is inserted in the rear guide to be arranged with the signal transmitting disc at an interval; a pressure plate is arranged between the impeller and the rotating-shaft positioning frame, the pressure plate is fixed with one side of the rotating-shaft fixing frame through bolts, and the pressure plate shields the front bearing. The gas turbine meter is simple in structure, accurate in flow detection, small in error and applicable to various gas flow detections.
Description
Technical field
The utility model relates to turbo flow meter, is a kind of gas turbine meter without magnetic vortex drag.
Background technology
Gas turbine meter is a kind of rotating speed that gas flow rate is converted to turbine, then secondary speed is converted to the electric signal being directly proportional to flow, accepts to show corresponding flow information after this Electric signal processing by integrating instrument.It is widely used in the industrial gasses such as oil, chemical industry, electric power, metallurgy and detects or Trade Measures, and Applicable media has rock gas, town gas, combustion gas, alkanes industrial inertia gas etc.This kind of flowmeter is subject to hardly fluid density, pressure, temperature in the time of Test Cycle volumetric flow rate, viscosity is isoparametric affects, therefore use comparatively extensive.
Existing gas turbine meter generally comprises flow sensor and integrating instrument, flow sensor comprise housing and be positioned at leading, the cartridge assemblies of housing, after lead, after lead do not form complete hermetically-sealed construction between core fixing frame, therefore dust-proof effect is not good enough, once lead after impurity enters and core fixing frame inside, easily affect the rotation of inner rotating shaft, thereby affect the measuring accuracy of turbo flow meter, also greatly reduced the serviceable life of turbo flow meter simultaneously.In addition, after existing gas turbine meter, lead most employing metal material, along with air current flow, sender set after lead interior High Rotation Speed, signal detector across after lead acquisition pulse signal.But after sender set High Rotation Speed, lead inner meeting and produce magnetic whirlpool after metal, magnetic vortex drag can reduce wheel speed, thereby affects the linearity of turbo flow meter, and the measuring accuracy of turbo flow meter reduces thereupon.Meanwhile, the interference wave that magnetic whirlpool produces has affected electric signal, has reduced the serviceable life of secondary instrument electronic devices and components, affects the computational accuracy of secondary instrument, makes turbo flow meter error in dipping excessive, and user is caused to unnecessary loss.Therefore, the structure of above-mentioned existing gas turbine meter is further improved.
Summary of the invention
For overcoming above-mentioned deficiency, the purpose of this utility model is that a kind of gas turbine meter without magnetic vortex drag is provided to this area, make it solve existing similar flowmeter because easily producing magnetic vortex drag and the not good enough not good enough technical matters of measuring accuracy that causes of protection.Its objective is and be achieved through the following technical solutions.
A kind of gas turbine meter without magnetic vortex drag, this gas worm gear flowmeter comprises flow sensor and integrating instrument, flow sensor comprises with the housing of through flow hole and is positioned at the leading of housing through flow hole, cartridge assemblies, after lead, cartridge assemblies comprises impeller, rotating shaft, bearing, sender set, core fixing frame, rotating shaft locating rack, core fixing frame be fixed on leading and after lead between, and leading, core fixing frame, after lead the through-flow runner of interior formation, in the impeller cavity that impeller forms between leading and core fixing frame, the blade of impeller is arranged in runner, rotating shaft locating rack is fixed in core fixing frame, and rotating shaft is positioned rotating shaft locating rack by front bearing, rear bearing rotation, and rotating shaft one end is stretched out rotating shaft locating rack front bearing and is fixedly connected with impeller, and the other end stretches out rotating shaft locating rack rear bearing and is fixedly connected with sender set, integrating instrument comprises signal detector, pressure transducer and secondary calculating instrument, and signal detector, pressure transducer are fixed in housing.Its structural feature be described core fixing frame and described after seal by O-ring seal between leading, described sender set, rear bearing be positioned at core fixing frame with after lead formed chamber, after described, lead as nonmetal parts, described signal detector and described sender set are separated by after described and are led setting; Between described impeller and described rotating shaft locating rack, be provided with pressing plate, by screw, pressing plate and rotating shaft locating rack one side are fixed, and pressing plate block described front bearing.By said structure, after inciting somebody to action, lead and form sealing between core fixing frame, thereby it is indoor effectively to prevent that impurity from entering rear guide cavity, and rear bearing is played to protective action.In rotating shaft locating rack front side, pressing plate is set, thereby front bearing is played to effective protective action.By bearing is protected, thereby the precision while ensureing rotating shaft rotation increases the service life.By will after lead and be designed to non-metallic material, not only can ensure signal detector across after lead and still can accept sender set acquisition pulse signal, and in the time of sender set high-speed rotation, can not produce magnetic vortex drag, improve the degree of accuracy detecting.
Described pressing plate is nonmetal parts, and described rotating shaft locating rack one side is provided with the board slot coordinating with described pressing plate, and pressing plate is socketed described rotating shaft, and is fixed in board slot by described screw, and between pressing plate and rotating shaft and be clearance fit between pressing plate and the wheel hub of impeller.By this structure, can not only effectively protect front bearing, and not affect the rotation of rotating shaft.
Between described leading, core fixing frame outer peripheral face and the through flow hole inwall of described housing, form an atmospheric pressure cavity, this atmospheric pressure cavity communicates with the pressure transducer in described housing, and described runner in leading communicates with atmospheric pressure cavity.Realize the measurement to gaseous tension in air pressure by this structure.
Described rotating shaft locating rack one side is provided with disk, and in described core fixing frame, a side is provided with the annular groove coordinating with disk, and described disk is placed in annular groove, and passes disk and the locking of core fixing frame inwall by bolt.By this structure, make to form between rotating shaft locating rack and core fixing frame good closed structure, reduce impurity enter core fixing frame with after lead in formed chamber.
Described rotating shaft locating rack is provided with oil hole near a side end face of described sender set, and oil hole communicates with the axis hole of connection rotating shaft in rotating shaft locating rack.By this oil hole is set, thus will rotating shaft locating rack and core fixing frame dismounting, can in the axis hole of rotating shaft locating rack, inject lubricating oil, more for convenience.
The utility model structure is comparatively simple, adopt after nonmetallic and lead, signal detector can across after lead and gather sender set pulse signal, and sender set High Rotation Speed can be in rear artificial delivery magnetisation whirlpool, can not produce reluctance force to impeller, thereby improve the linear precision of gas turbine meter, reduce lower limit flow, make gas turbine meter have wider flow range, extend gas turbine meter serviceable life.
Brief description of the drawings
Fig. 1 is embodiment mono-structural representation of the present utility model, and in figure, arrow represents airflow direction.
Fig. 2 is embodiment bis-structural representations of the present utility model.
Fig. 3 is the local structure for amplifying schematic diagram of the utility model embodiment mono-.
In figure, the name of sequence number is called: 1, integrating instrument, 2, housing, 201, through flow hole, 3, signal detector, 4, pressure transducer, 5, leading, 501, atmospheric pressure cavity, 6, impeller, 601, blade, 7, core fixing frame, 701, runner, 8, pressing plate, 9, rotating shaft locating rack, 901, disk, 902, oil hole, 10, rotating shaft, 11, front bearing, 12, rear bearing, 13, sender set, 14, O-ring seal, 15, after lead.
Embodiment
Now by reference to the accompanying drawings, the utility model is further described.
As shown in Figure 1, Figure 3, this gas turbine meter without magnetic vortex drag comprises flow sensor and integrating instrument 1, flow sensor comprise with the housing 2 of through flow hole 201 and be limited in leading 5, cartridge assemblies in housing through flow hole, after lead 15, cartridge assemblies is made up of impeller 6, rotating shaft 10, bearing, sender set 13, core fixing frame 7, rotating shaft locating rack 9, wherein leads afterwards employing nonmetal parts.Leading and housing is fixed by screw, core fixing frame and after form sealing by O-ring seal 14 between leading, core fixing frame be limited in leading and after lead between, and leading, core fixing frame, after lead inner peripheral surface, form through-flow runner 701, in the impeller cavity that impeller forms between leading and core fixing frame, the blade 601 of impeller is arranged in runner.Rotating shaft locating rack one side is provided with disk 901, in core fixing frame, a side is provided with the annular groove coordinating with disk, disk is placed in annular groove, and pass disk and the locking of core fixing frame inwall by bolt, thereby realize the fixing of rotating shaft locating rack and core fixing frame, after fixing, there is certain sealing effectiveness between the two.Rotating shaft is positioned in the axis hole of rotating shaft locating rack by front bearing 11, rear bearing 12 rotations, rotating shaft one end is stretched out rotating shaft locating rack front bearing and is fixedly connected with impeller, between impeller and rotating shaft locating rack, be provided with the pressing plate 8 of socket rotating shaft, pressing plate is nonmetal parts, be provided with in rotating shaft locating rack one side the board slot coordinating with pressing plate, by screw, pressing plate is fixed in board slot, pressing plate blocks front bearing, and is clearance fit between pressing plate and rotating shaft.The rotating shaft other end stretches out rotating shaft locating rack rear bearing and is fixedly connected with sender set, sender set be positioned at core fixing frame with after lead formed chamber.Above-mentioned rotating shaft locating rack is provided with oil hole 902 near a side end face of sender set, and oil hole communicates with the axis hole in rotating shaft locating rack.
Integrating instrument comprises signal detector 3, pressure transducer 4 and secondary calculating instrument, and signal detector, pressure transducer are fixed in housing.Between leading, core fixing frame outer peripheral face and the through flow hole inwall of housing, form an atmospheric pressure cavity 501, this atmospheric pressure cavity communicates with the pressure transducer in leading runner and housing.Signal detector with after sender set in leading be to lead setting after being separated by, for example, signal detector is led the rear portion (shown in Fig. 2) of leading after (shown in Fig. 1) in corresponding groove or signal detector fit in after inserting.
The principle of work of this utility model is: air-flow, by the leading runner that enters, promotes wheel rotation, and impeller drives sender set to rotate by rotating shaft, and sender set High Rotation Speed produces pulse signal, does not now produce magnetic whirlpool, there is no magnetic vortex drag, can not affect measuring accuracy.Signal detector across after lead and gather the pulse signal that sender set produces, be sent to secondary calculating instrument together with detecting the pressure signal of atmospheric pressure cavity with pressure transducer, be presented at afterwards as calculated on display screen or remote data transmission.
Claims (5)
1. the gas turbine meter without magnetic vortex drag, this gas turbine meter comprises flow sensor and integrating instrument (1), flow sensor comprises with the housing of through flow hole (201) (2) and is positioned at leading (5) of housing through flow hole, cartridge assemblies, after lead (15), cartridge assemblies comprises impeller (6), rotating shaft (10), bearing, sender set (13), core fixing frame (7), rotating shaft locating rack (9), core fixing frame be fixed on leading and after lead between, and leading, core fixing frame, after lead the through-flow runner of interior formation (701), in the impeller cavity that impeller forms between leading and core fixing frame, the blade (601) of impeller is arranged in runner, rotating shaft locating rack is fixed in core fixing frame, rotating shaft is positioned rotating shaft locating rack by front bearing (11), rear bearing (12) rotation, rotating shaft one end is stretched out rotating shaft locating rack front bearing and is fixedly connected with impeller, and the other end stretches out rotating shaft locating rack rear bearing and is fixedly connected with sender set, integrating instrument comprises signal detector (3), pressure transducer (4) and secondary calculating instrument, and signal detector, pressure transducer are fixed in housing, it is characterized in that described core fixing frame (7) and described after lead between (15) by O-ring seal (14) sealing, described sender set (13), rear bearing (12) be positioned at core fixing frame with after lead formed chamber, after described, lead as nonmetal parts, described signal detector (3) and described sender set are separated by after described and are led setting, between described impeller (6) and described rotating shaft locating rack (9), be provided with pressing plate (8), by screw, pressing plate and rotating shaft locating rack one side are fixed, and pressing plate block described front bearing (11).
2. the gas turbine meter without magnetic vortex drag according to claim 1, it is characterized in that described pressing plate (8) is nonmetal parts, described rotating shaft locating rack (9) one sides are provided with the board slot coordinating with described pressing plate, pressing plate is socketed described rotating shaft (10), and be fixed in board slot by described screw, and between pressing plate and rotating shaft and be clearance fit between pressing plate and the wheel hub of impeller (6).
3. the gas turbine meter without magnetic vortex drag according to claim 1, it is characterized in that forming an atmospheric pressure cavity (501) between through flow hole (201) inwall of described leading (5), core fixing frame (7) outer peripheral face and described housing (2), this atmospheric pressure cavity communicates with the pressure transducer (4) in described housing, and described leading interior runner (701) communicates with atmospheric pressure cavity.
4. the gas turbine meter without magnetic vortex drag according to claim 1, it is characterized in that described rotating shaft locating rack (9) one sides are provided with disk (901), in described core fixing frame, (7) one sides are provided with the annular groove coordinating with disk, described disk is placed in annular groove, and passes disk and the locking of core fixing frame inwall by bolt.
5. the gas turbine meter without magnetic vortex drag according to claim 1, it is characterized in that described rotating shaft locating rack (9) is provided with oil hole (902) near a side end face of described sender set (13), oil hole communicates with the axis hole of connection rotating shaft (10) in rotating shaft locating rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231299.7U CN203893893U (en) | 2014-05-07 | 2014-05-07 | Gas turbine meter free of magnetic eddy resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420231299.7U CN203893893U (en) | 2014-05-07 | 2014-05-07 | Gas turbine meter free of magnetic eddy resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203893893U true CN203893893U (en) | 2014-10-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420231299.7U Expired - Fee Related CN203893893U (en) | 2014-05-07 | 2014-05-07 | Gas turbine meter free of magnetic eddy resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203893893U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061169A (en) * | 2017-11-28 | 2018-05-22 | 安徽荣达阀门有限公司 | A kind of soft sealing gate valve flow monitoring device |
| CN108180952A (en) * | 2018-02-12 | 2018-06-19 | 天津新科成套仪表有限公司 | A kind of turbine flowmeter for gas with thrust Self-balancing |
| CN108663091A (en) * | 2018-05-18 | 2018-10-16 | 温州福鑫仪表有限公司 | Gas intelligence worm gear flowmeter |
| CN110567538A (en) * | 2019-09-29 | 2019-12-13 | 福建哈德仪表有限公司 | Turbine flowmeter with parabolic flow guiding device |
-
2014
- 2014-05-07 CN CN201420231299.7U patent/CN203893893U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061169A (en) * | 2017-11-28 | 2018-05-22 | 安徽荣达阀门有限公司 | A kind of soft sealing gate valve flow monitoring device |
| CN108180952A (en) * | 2018-02-12 | 2018-06-19 | 天津新科成套仪表有限公司 | A kind of turbine flowmeter for gas with thrust Self-balancing |
| CN108663091A (en) * | 2018-05-18 | 2018-10-16 | 温州福鑫仪表有限公司 | Gas intelligence worm gear flowmeter |
| CN108663091B (en) * | 2018-05-18 | 2023-12-19 | 温州福鑫仪表有限公司 | Gas intelligent worm-gear flowmeter |
| CN110567538A (en) * | 2019-09-29 | 2019-12-13 | 福建哈德仪表有限公司 | Turbine flowmeter with parabolic flow guiding device |
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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: 20141022 Termination date: 20170507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |