CN2324536Y - Gyroscope speed type flow senser - Google Patents
Gyroscope speed type flow senser Download PDFInfo
- Publication number
- CN2324536Y CN2324536Y CN 98201884 CN98201884U CN2324536Y CN 2324536 Y CN2324536 Y CN 2324536Y CN 98201884 CN98201884 CN 98201884 CN 98201884 U CN98201884 U CN 98201884U CN 2324536 Y CN2324536 Y CN 2324536Y
- Authority
- CN
- China
- Prior art keywords
- gyro
- casing
- shell
- segment
- coil
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a sensor which comprises a casing. A top is arranged in the casing. A coil is arranged on the casing, wherein the casing is tubular, and the inner cavity thereof orderly forms a horn-shaped inlet segment, a stair-shaped nozzle segment, an expanding segment, a cone opening segment and a straight type outlet segment. A limiting rod is arranged in the cone opening segment, the top is a hollow sphere with a center pipe, the outer wall of the center pipe in the hollow sphere is sheathed with a permanent magnetic loop, and the top is arranged between the nozzle segment in the casing and the limiting rod. When liquid flows through the casing, the top floats in the liquid and rotates. A rotational magnetic field generated by the magnetic loop generates an induction potential in the coil, thereby, the flow capacity of the liquid is converted into electric quantity and conveyed out. The utility model has the advantages of no need of an external power supply, long service life and accurate measurement even under the condition of adverse environments.
Description
The utility model relates to a kind of flow sensor, belongs to the liquid flow measurement technical field.
Measure the flowmeter that fluid flow adopts the different physical principles of foundation more at present, as ultrasonic, electromagnetism, vortex etc.In theory, they all have reasonable comparatively speaking meter characteristic, but be subjected to the restriction of many extraneous inherent conditions usually, as liquid solids, waterpower vibrations, mechanical wear etc. are arranged in rugged surroundings, and the front and back straight length of installation site, flowmeter all can limit and influence measuring accuracy, and common sensor also needs external power supply.
In view of above-mentioned, the purpose of this utility model just provides a kind of flow sensor that does not need external power source and can accurately measure under severe environmental conditions.
For achieving the above object, the utility model adopts following design proposal:
A kind of gyro rotating speed formula flow sensor, comprise shell, it is characterized in that: gyro is housed in the shell, coil and output plug are housed on the shell, coil is electrically connected with output plug, and wherein: shell solenoid shape, its inner chamber are trumpet type entrance, stepped appearance nozzle segment, expanding reach, awl mouth section and straight type outlet section successively, the big opening end smooth transition of expanding reach and awl mouthful section is equipped with one in the awl mouth section and places restrictions on rod; Gyro is a hollow ball that has pipe core, and the outer wall of ball inner central tube is nested with permanent magnet ring, and gyro places the nozzle segment in the shell and places restrictions between the handful.
Have flow of liquid out-of-date in the shell, gyro will swim in the liquid, and serve as the axle rotation with the through hole of its pipe core, and its rotating speed is proportional to volumetric flow rate.The rotating magnetic field that magnet ring in the gyro produces produces induced potential in coil, send thereby the flow of fluid is transformed into electric weight.
Below in conjunction with drawings and Examples the utility model is elaborated.
Fig. 1 is a structural drawing of the present utility model.
See also accompanying drawing 1: the utility model is made of shell, coil 2, gyro 3.Wherein:
Shell is tubulose and is connected (be spirally connected, interlocking etc.) with back casing 5 by procapsid 7 and forms, the inner chamber of procapsid 7 is trumpet type entrance, stepped appearance nozzle segment, expanding reach successively, the inner chamber of back casing 5 is awl mouthful section and straight type outlet section successively, an expanding reach and a big opening end smooth transition of boring the mouth section, be equipped with one in the awl mouth section and place restrictions on rod 4, place restrictions on rod 4 and fix with back casing 5.Coil 2 and output plug 1 are housed on the shell, and coil 2 is electrically connected with output plug 1.
Gyro 3 is hollow balls that have pipe core, and the outer wall of ball inner central tube is nested with permanent magnet ring 6, and gyro 3 places the nozzle segment in the shell and places restrictions between the rod 4.
Narrate principle of work of the present utility model below.
Fluid to be measured enters shell inner cavity along the trumpet type entrance of procapsid 7, through nozzle segment, expanding reach, gyro 3, place restrictions on rod 4 after, flow out from the outlet section of back casing 5.After flow surpasses certain minimum value, because shell inner cavity is the annulus of convergent-divergent shape from nozzle segment expansion suddenly, institute is so that flow of liquid can produce a volution shape eddy current after crossing this annulus, the eddy current center has one and stagnates in the district, gyro 3 is just stagnating at this and is staying in the district, because of the proportion of the proportion of diabolo 3 and liquid approaching, so can making hydrodynamic, gyro 3 suspends, at this moment the distribution situation of the gyro 3 ambient pressure fields of Xuan Fuing is: the anterior pressure drop of gyro and in the restoration and compensation at rear portion the dynamic impulsion of fluid, as a result fluid axially make a concerted effort equal zero, make gyro 3 can not washed away and remain on by fluid on the floating point.Gyro 3 serves as the axle rotation with oneself pipe core through hole on this floating point just like this, and its rotating speed is proportional to volumetric flow rate.Gyro 3 is in rotary course, and the rotating magnetic field that the magnet ring 6 in it produces will produce induced potential in coil 2, and this electromotive force produces the sinusoidal signal that amplitude can reach 10V in coil 2, and the frequency of this signal is directly proportional with volumetric flow rate.After this signal drawn from output plug 1, through conversion, just can reach the different liquids flow is measured accurately and reliably again.
Place restrictions on rod 4 effect and be and prevent that gyro 3 is flushed away during less than minimum value at flow.
Shell also can be made into integration.Gyro can be made through welding by pipe core, two hemispherical Shells.
The utlity model has following advantage:
1. because inner nothing is worn and torn, and gyro has the automatically cleaning ability in rotation, solid particle can not be attached to gyro The surface so long service life can keep good meter characteristic, still can work under the condition of vibration, It also can wait long-term work under the mal-condition hot and humid;
2. because gyro is that the radial axle (being the central tube through hole) around self rotates under the fluid effect, therefore Irrelevant with the installation site, but level, vertical, tilt to install, the front and back straight length is not had strict requirement yet;
Since gyro when rotated, the rotating excitation field that the magnet ring in it produces will produce induced potential in coil, Therefore do not need additional power source in the work.
Claims (3)
1. a gyro rotating speed formula flow sensor comprises shell, it is characterized in that:
Gyro is housed in the shell, coil and output plug are housed on the shell, coil is electrically connected with output plug, wherein:
Shell is a tubulose, and its inner chamber is trumpet type entrance, stepped appearance nozzle segment, expanding reach, awl mouth section and straight type outlet section successively, and the big opening end smooth transition of expanding reach and awl mouthful section is equipped with one in the awl mouth section and places restrictions on handful;
Gyro is a hollow ball that has pipe core, and the outer wall of ball inner central tube is nested with permanent magnet ring, and gyro places the nozzle segment in the shell and places restrictions between the rod.
2. gyro rotating speed formula flow sensor as claimed in claim 1 is characterized in that described gyro can be made through welding by pipe core, two hemispherical Shells.
3. gyro rotating speed formula flow sensor as claimed in claim 1, it is characterized in that: described shell is formed by connecting by procapsid and back casing, the inner chamber of procapsid is trumpet type entrance, stepped appearance nozzle segment, expanding reach successively, the inner chamber of back casing is awl mouthful section and straight type outlet section, the big opening end smooth transition of the awl mouth section of the expanding reach of procapsid and back casing successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98201884 CN2324536Y (en) | 1998-03-09 | 1998-03-09 | Gyroscope speed type flow senser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98201884 CN2324536Y (en) | 1998-03-09 | 1998-03-09 | Gyroscope speed type flow senser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2324536Y true CN2324536Y (en) | 1999-06-16 |
Family
ID=33959042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98201884 Expired - Fee Related CN2324536Y (en) | 1998-03-09 | 1998-03-09 | Gyroscope speed type flow senser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2324536Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776470A (en) * | 2010-03-09 | 2010-07-14 | 中国人民解放军海军工程大学 | Bidirectional permanent magnetic induction flowmeter |
| CN103080465A (en) * | 2010-07-12 | 2013-05-01 | 史密斯运输股份有限公司 | Method and apparatus for a well employing the use of an activation ball |
-
1998
- 1998-03-09 CN CN 98201884 patent/CN2324536Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776470A (en) * | 2010-03-09 | 2010-07-14 | 中国人民解放军海军工程大学 | Bidirectional permanent magnetic induction flowmeter |
| CN103080465A (en) * | 2010-07-12 | 2013-05-01 | 史密斯运输股份有限公司 | Method and apparatus for a well employing the use of an activation ball |
| US9404330B2 (en) | 2010-07-12 | 2016-08-02 | Schlumberger Technology Corporation | Method and apparatus for a well employing the use of an activation ball |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Granted publication date: 1999.06.23 |