CN2545597Y - Tube vibration liquid density transducer - Google Patents
Tube vibration liquid density transducer Download PDFInfo
- Publication number
- CN2545597Y CN2545597Y CN 02211572 CN02211572U CN2545597Y CN 2545597 Y CN2545597 Y CN 2545597Y CN 02211572 CN02211572 CN 02211572 CN 02211572 U CN02211572 U CN 02211572U CN 2545597 Y CN2545597 Y CN 2545597Y
- Authority
- CN
- China
- Prior art keywords
- vibration tube
- end cover
- vibration
- tube seat
- liquid density
- 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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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a vibration tube liquid density transducer. A small-scale throw-in type tube vibration liquid density transducer has the advantages of high detection precision, good stability and repeatability and far-transfer function and comprises a sealing body system which is convenient for being carried and thrown in and consists of a cylindrical housing, an upper end cover, a lower end cover and a protecting cover. A channel for detected liquid consists of an elastic vibration tube arranged at the center, an upper vibration tube base, a lower vibration tube base, an elastic hose, an upper end cover and a lower end cover. A positive feedback system consists of an elastic vibration tube, an exciting coil, a detection coil group and a control circuit board. The elastic vibration tube full of liquid is kept in a resonant state under the effect of the exciting coil and the detection coil group. The vibration frequency is amplified and processed by the control circuit board and then is output as a pulse signal, thereby measuring and obtaining the density of liquid. The utility model is suitable for being used for the liquid storage system in a throw-in type.
Description
Affiliated field
The utility model relates to a kind of vibration tube formula liquid density sensor that fluid density detects that is used for.
Background technology
The sensor of at present existing vibration tube formula fluid density detecting instrument mostly is online pipeline and measures, and volume is bigger, and the fluid density that is unsuitable for the liquid storage system detects.
Technical scheme
The purpose of this utility model is to provide a kind of vibration tube formula liquid density sensor, small-sized throw-in type, accuracy of detection height, stability and good reproducibility, has the teletransmission function.
The utility model is realized above-mentioned purpose in the following manner:
Its composition of the utility model comprises: one by elasticity vibration tube, magnetizing coil and magnetic test coil group, control circuit board, constitutes a closed loop positive feedback system.Described elasticity vibration tube 9 is in the center of sensor, and two ends are positioned respectively on vibration tube seat 8, the following vibration tube seat 13; Described upward vibration tube seat 8, following vibration tube seat 13 are equipped with magnetizing coil 10 and magnetic test coil 11; Last vibration tube seat 8, following vibration tube seat 13 outer ends are connected with elastic hose 15-1 and 15-2 respectively; Elastic hose 15-1 is connected with upper end cover 5, bottom end cover 16 respectively with 15-2; Upper end cover 5, bottom end cover 16 are fastened on the upper and lower side of cylindrical shell 14, and described upper and lower end cap has the duct; Elasticity vibration tube 9, elastic hose 15, upper end cover 5, bottom end cover 16 form a fluid path; Described going up in the vibration tube seat 8 is equipped with temperature sensor 7; Described upper and lower vibration tube seat supports 6-1 by cage type respectively and is connected with described upper and lower end cap with 6-2; Between the described upper and lower vibration tube seat arc connector 12 is housed, above-mentioned each element and circular cylindrical shell assembling back form an obturator system.Outside the described upper end cover 5 protecting cover 3 is housed, control circuit board 4 and cable ejector 2 are housed in the protecting cover;
Described cylindrical shell 14 diameters are less than 100 millimeters, and height forms seal with described upper end cover 5, bottom end cover 16 through welding less than 400 millimeters
Description of drawings
Fig. 1 is the utility model example structure figure;
Embodiment
1 is extension line among the figure.
The utility model constitutes a closed loop positive feedback system by elasticity vibration tube, magnetizing coil and magnetic test coil group, control circuit board.The vibrating elements of sensing element is the elasticity vibration tube of the smooth stretched steel of a path thin-walled endoporus, the quality that is full of the fluid to be measured in the elasticity vibration tube is the additional mass of elasticity vibration tube, the resonance frequency of elasticity vibration tube becomes with the density of fluid to be measured, thereby records the density value of different liquids.Elasticity vibration tube of the present utility model is in resonant condition under the effect of excitatory circle and magnetic test coil group.Fluid to be measured participates in vibration, and vibration frequency is exported with the pulse signal form after control circuit board is handled amplification.The density of this pulse signal and fluid to be measured is certain functional relation, and the temperature signal output back that described temperature sensor records participates in the density correction.The control circuit of control circuit board forms teletransmission by cable after the cable ejector is drawn.
The utility model has the advantages that:
1. the elasticity vibration tube is a kind of ferromagnetism, parelinvar of minor diameter thin wall, through strict heat Process, have high mechanical quality factor. Have little temperature coefficient of the elastic modulus, This is described vibration tube formula density sensor miniaturization and high-precision basis.
2. the quality of upper and lower vibration tube seat is far longer than described elasticity vibration tube quality, is designed with firm Positioning supporting point, improved elasticity vibration tube resonance stability and repeated.
Cage type support have micro-elasticity and with described upper and lower vibration tube seat quality be complementary just Degree has been strengthened the position of upper and lower vibration tube seat in described circular cylindrical shell, avoids extraneous Interfere.
4. elastic hose, its effect makes described elasticity vibration tube free from temperature influence. Described control Circuit board and cable ejector are Explosion-proof Design.
5. the described arc connector that fills between the upper and lower vibration tube seat avoids upper and lower vibration tube seat to exist The possibility that is subjected to displacement when being subjected to External Force Acting.
6. the described circular cylindrical shell outer dia of vibration tube formula liquid density sensor is less than 95 millimeters, and height is less than 400 millimeters, is easy to carry and drops into.
Claims (4)
1. the vibration tube formula liquid density sensor of a tracer liquid density, its composition comprises: one by elasticity vibration tube, magnetizing coil and magnetic test coil group, control circuit board, constitutes a closed loop positive feedback system.Described elasticity vibration tube (9) is in the center of sensor, and two ends are positioned respectively on vibration tube seat (8), the following vibration tube seat (13); Described upper and lower vibration tube seat is equipped with magnetizing coil (10) and magnetic test coil (11); Upper and lower vibration tube seat outer end is connected with elastic hose (15-1) and (15-2) respectively; Elastic hose (15-1,15-2) is connected with upper end cover (5), bottom end cover (16) respectively; Upper and lower end cap is fastened on the upper and lower side of cylindrical shell (14), and described upper and lower end cap has the duct; Elasticity vibration tube (9), elastic hose (15), upper end cover (5), bottom end cover (16) form a fluid path; Described going up in the vibration tube seat (8) is equipped with temperature sensor (7); Described upper and lower vibration tube seat supports (6-1,6-2) by cage type respectively and is connected with described upper and lower end cap; Between the described upper and lower vibration tube seat arc connector (12) is housed, above-mentioned each element and circular cylindrical shell assembling back form an obturator system; Described upper end cover (5) is outer to be equipped with protecting cover (3), and control circuit board (4) and cable ejector (2) are housed in the protecting cover;
2. vibration tube formula liquid density sensor according to claim 1 is characterized in that: described elasticity vibration tube (9) diameter is 15 millimeters of φ 5～φ, and wall thickness is 0.2～0.5 millimeter.
3. according to claim 1 and 2 described vibration tube formula liquid density sensors, it is characterized in that: described steel elasticity vibration tube (9) adopts extraordinary welding location to form firm fulcrum with upper and lower vibration tube seat,
4. vibration tube formula liquid density sensor according to claim 1 is characterized in that: described cylindrical shell 14 diameters are less than 100 millimeters, and height forms seal with described upper end cover (5), bottom end cover (16) through welding less than 400 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211572 CN2545597Y (en) | 2002-04-27 | 2002-04-27 | Tube vibration liquid density transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211572 CN2545597Y (en) | 2002-04-27 | 2002-04-27 | Tube vibration liquid density transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2545597Y true CN2545597Y (en) | 2003-04-16 |
Family
ID=33691447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02211572 Expired - Fee Related CN2545597Y (en) | 2002-04-27 | 2002-04-27 | Tube vibration liquid density transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2545597Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735586A (en) * | 2012-06-29 | 2012-10-17 | 天津大学 | Resonant cylinder type liquid density sensor |
| CN104204765A (en) * | 2012-03-21 | 2014-12-10 | 伊顿公司 | Digital densitometer and fluid gauging system |
| CN104949897A (en) * | 2015-06-25 | 2015-09-30 | 青岛澳邦量器有限责任公司 | Handheld digital densimeter |
-
2002
- 2002-04-27 CN CN 02211572 patent/CN2545597Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104204765A (en) * | 2012-03-21 | 2014-12-10 | 伊顿公司 | Digital densitometer and fluid gauging system |
| US9851285B2 (en) | 2012-03-21 | 2017-12-26 | Eaton Corporation | Digital densitometer and fuel gauging system |
| CN102735586A (en) * | 2012-06-29 | 2012-10-17 | 天津大学 | Resonant cylinder type liquid density sensor |
| CN104949897A (en) * | 2015-06-25 | 2015-09-30 | 青岛澳邦量器有限责任公司 | Handheld digital densimeter |
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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 |