CN2074009U - Inserted type optical fiber turbine flowmeter - Google Patents
Inserted type optical fiber turbine flowmeter Download PDFInfo
- Publication number
- CN2074009U CN2074009U CN 90212145 CN90212145U CN2074009U CN 2074009 U CN2074009 U CN 2074009U CN 90212145 CN90212145 CN 90212145 CN 90212145 U CN90212145 U CN 90212145U CN 2074009 U CN2074009 U CN 2074009U
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- China
- Prior art keywords
- optical fiber
- diaphragm
- flange
- honour
- type optical
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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 an inserted type optical fiber vortex street flowmeter for the measurement of the flow of gas, liquid, and steam. The utility model is mainly characterized in that an inserted type integral structure is composed of a vortex generator, a diaphragm reflection type optical fiber sensor, and a detecting line; the utility model has various outputs which comprise electric voltage, electric current, and frequency. The installation of the inserted type optical fiber vortex street flowmeter is finished so long as the triangular cylinder-shaped vortex generator is inserted into a measured pipe which is provided with corresponding small holes in advance so that the installation is particularly simple and convenient. The optical fiber sensor essentially has the advantages of safety, explosion prevention, vibration endurance, data measurement accuracy, simpler structure than the original unit combination instruments, and reduced cost.
Description
The utility model is for measuring the inserted optical fiber vortex shedding flow meter of gas, liquid, steam flow.
Generally adopt piezoelectric vortex flowmeter at present both at home and abroad, all complicated in anti-riot design.When measuring flow, most of pressure variation that causes by piezoelectric element detection whirlpool with triangle column eddy generator, and then calculate measured flux.This class flowmeter is relatively more responsive to Analysis of Pipe Vibrations, can accept false signal, makes the flow measuring data error occur, and non-refractory, generally can only be used for below 200 ℃, and when temperature variation was big, piezoelectric patches easily broke.Because such flow counts monolithic construction, thus pipeline must be cut off when installing, little convenient.
The purpose of this utility model is to provide a kind of being easy to install, cost is low, high temperature resistant, vibration resistance, can be anti-riot the inserted optical fiber vortex shedding flow meter.
The purpose of this utility model is achieved in that (1) flowmeter adopts eddy generator, Fibre Optical Sensor, detection line to form a plug in construction integral body.(2) adopt the diaphragm reflection-type optical fibre sensor, to detect the variation that triangle column eddy generator produces the whirlpool frequency.(3) the utlity model has voltage, electric current, the multiple output of frequency.
The utility model inserts pipeline with triangle column eddy generator from aperture and can realize detecting, so install and use easy especially because as long as open one and the corresponding aperture of triangle column eddy generator on tested pipeline.Fibre Optical Sensor is anti-riot, anti-the shaking of safety in essence, can not accept the false signal that pipeline and ambient vibration cause, so calculation of measured data is accurate, and more simple in structure than unit aggregated instrument in the past, therefore reduced cost.
Concrete structure of the present utility model is provided by following accompanying drawing and embodiment.
This flowmeter mainly comprises optical fiber (19), diaphragm (7), triangle column eddy generator (15).Optical fiber passes the upside of the downward straight cutting of the big end cover of optical fiber (2) to the diaphragm protecting cover (5) that has some apertures, and aims at the top in diaphragm centre.For the not intercommunication of whirlpool signal that guarantees that diaphragm produces up and down, be provided with the upper and lower sealing gasket of diaphragm (6) at the circumference of diaphragm (7).The diaphragm below has pilot ring (10) and lower gasket (11) successively, and several parts such as diaphragm protecting cover, diaphragm, upper-lower seal pad, pilot ring, lower gasket is installed in the centre of diaphragm gland (4) and seat of honour flange (12).Diaphragm gland and seat of honour flange are for being threaded.Between diaphragm gland (4) and the pilot ring (10) pad (9) is arranged.
When the distance between optical fiber and the diaphragm was transferred to the optimum position, flange one side in the seat of honour can use holding screw (8) that diaphragm gland (4) is locked.Seat of honour flange (12) is an one with triangle column eddy generator (15), and it is fixed on the centre of base flange (14) with screw (13).The optical fiber top reaches screw (3) optical fiber is fixed on the diaphragm gland (4) together with the big end cover of optical fiber (2) with protecting pipe flange (1).The length of triangle column eddy generator is corresponding with tested caliber.When detecting flow, optical fiber is inserted electronic circuit, eddy generator is inserted tested pipeline (16), passage (17) just causes measured object the diaphragm downside, passage (18) causes the diaphragm upside with measured object, because the pressure that the measured object whirlpool causes changes, diaphragm is with regard to up-down vibration.The reflective frequency that diaphragm produces in vibration processes receives by optical fiber and is transferred to the electronic circuit part, can detect measured flux.
List of references:
1, " external metering " 1986NO.3 " single-mode fiber eddy-current flowmeter "
2, the bright vortex flow instrument of translating of " Jiangsu instrument and meter for automation magazine " 1987.1 Chen Xian
3, " chemical process automation and instrument " the 16th volume the 2nd phase Jinan instrument and meter for automation factory executes the article of literary composition Ji: " utilizing fiber optics/microprocessing to improve the precision of flow instrument "
Claims (5)
1, a kind of for measuring the inserted optical fiber vortex shedding flow meter of gas, liquid, steam flow, it is characterized in that flowmeter top has optical fiber (19) to feed, central part has a diaphragm (7), and the triangle column eddy generator (15) that inserts tested pipeline is arranged at the bottom.
2, flowmeter according to claim 1, the circumference that it is characterized in that diaphragm (7) has upper and lower sealing gasket (6), there is the diaphragm protecting cover (5) that has some apertures the top of diaphragm, there is pilot ring (10) below, lower gasket (11) is set below the pilot ring, and these several parts are installed in the middle of diaphragm gland (4) and the seat of honour flange (12), (4) and (12) are for being threaded.
3, flowmeter according to claim 1 is characterized in that optical fiber (19) lower end is with the big end cover of optical fiber (2), and with protecting pipe flange (1) and screw (3) optical fiber is fixed on the diaphragm gland (4) together with the big end cover of optical fiber.
4, flowmeter according to claim 1, it is characterized in that triangle column eddy generator (15) and seat of honour flange (12) are an integral body, the length of triangle column eddy generator can be made into corresponding with the diameter of various tested pipelines (16), measured object passage (17) and (18) are arranged at triangle column eddy generator top, lead to the below that (17) pass to diaphragm, passage (18) passes to the top of diaphragm.
5, according to claim 2,4 described flowmeters, it is characterized in that seat of honour flange (12) being fixed on the base flange (14) with screw (13), the holding screw (8) of a tightening diaphragm gland (4) is arranged in a side of seat of honour flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212145 CN2074009U (en) | 1990-04-18 | 1990-04-18 | Inserted type optical fiber turbine flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212145 CN2074009U (en) | 1990-04-18 | 1990-04-18 | Inserted type optical fiber turbine flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2074009U true CN2074009U (en) | 1991-03-27 |
Family
ID=4891742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90212145 Withdrawn CN2074009U (en) | 1990-04-18 | 1990-04-18 | Inserted type optical fiber turbine flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2074009U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937468A (en) * | 2012-11-16 | 2013-02-20 | 中国科学院半导体研究所 | Optical fiber flow meter based on bourdon tube |
| CN105952435A (en) * | 2016-04-26 | 2016-09-21 | 哈尔滨工业大学 | Vortex shedding flow-meter suitable for oil-water well underground |
| CN110455353A (en) * | 2019-09-20 | 2019-11-15 | 贵阳学院 | A kind of floating ball vortex street correlation optic flow sensor and its flow rate testing methods |
-
1990
- 1990-04-18 CN CN 90212145 patent/CN2074009U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937468A (en) * | 2012-11-16 | 2013-02-20 | 中国科学院半导体研究所 | Optical fiber flow meter based on bourdon tube |
| CN105952435A (en) * | 2016-04-26 | 2016-09-21 | 哈尔滨工业大学 | Vortex shedding flow-meter suitable for oil-water well underground |
| CN110455353A (en) * | 2019-09-20 | 2019-11-15 | 贵阳学院 | A kind of floating ball vortex street correlation optic flow sensor and its flow rate testing methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |