CN2689191Y - Optical-fibre level sensors - Google Patents
Optical-fibre level sensors Download PDFInfo
- Publication number
- CN2689191Y CN2689191Y CN 200420017703 CN200420017703U CN2689191Y CN 2689191 Y CN2689191 Y CN 2689191Y CN 200420017703 CN200420017703 CN 200420017703 CN 200420017703 U CN200420017703 U CN 200420017703U CN 2689191 Y CN2689191 Y CN 2689191Y
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- optical fiber
- utility
- model
- sensing head
- probing
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Abstract
An optical-fiber liquid-level sensor relates to a sensor that is used to detect the liquid level of parts, such as production, storage, loading and unloading and so on. The utility model is composed of a sensing head of optical fiber, a probing seat and an explosive-proof box. The sensing head of optical fiber is composed of a sensing head with a 'U'-typed, a built-in optical fiber of incidence and a built-in optical fiber for returning light. The sensing head of optical fiber is installed on the probing seat which is installed in a probing rod of optical fiber. The probing rod of optical fiber is directly connected with or is connected with the explosive-proof box, an optical fiber coupler inside the probing rod of optical fiber and an output cable outside the probing rod of optical fiber by a connecting shaft via a metal corrugated pipe. The utility model is provided with ingenious structure, dependable performance, low cost, small volume and long service life. The utility model has the advantages of anti-high temperature, anti-high pressure and anti-corrosion. The utility model is provided with powerless detection, good safety and explosion-proof, convenient installation, exact measurement and good sensibility. The utility model can change the placed position at any moment according to the spacing. The utility model can limit the generation of overloading and less-loading. The accidents of the explosion and the firing that are caused by overloading and full loading can be avoided in the utility model.
Description
Technical field the utility model relates to a kind of be used for production, storage.Transportation.The sensor of the Level Detection at positions such as loading and unloading.
The background technology patent applied for " fiber imaging type liquid-sensitive sensor " (patent No. 02139111) arranged, it comprises and send light optical fiber, answer the smooth optic fibre, spheroidite, the radius O C of spheroidite vertically divides A point and B point line A B in the spheroidite equally, and equal A B, send the end of light optical fiber to send the light mouth to be positioned near the position of spheroidite B point, the end light-receiving mouth of answer the smooth optic fibre is arranged near the position of A point of spheroidite." optical fiber point type liquid level gauge " (patent No. 97241632), it is made up of optical fiber point sensor, opto-electronic conversion case, electric signal arrangement processor, display alarm.The optical fiber point sensor advance light optical fiber, the answer the smooth optic fibre end face is melt into spherical sensing head, and by fiber boot, stainless steel sleeve, fixedly protection such as bump protection ring, charging hole is arranged on the stainless steel sleeve, the net head is arranged at the bottom.Sensor places the setting position in the sealing flow container, and sensing head is measured the light signal that there is no liquid this position, through fiber optic conduction, and opto-electronic conversion, shaping is handled and is sent the display alarm signal.
The summary of the invention the purpose of this utility model is at above-mentioned present situation, aims to provide a kind of fibre optic liquid level sensor with performances such as high temperature resistant, low temperature, high pressure resistant, corrosion-resistant, anti-electromagnetic interference (EMI), the interference of anti-gas phase, no electro-detection, safety anti-explosives.
The implementation of the utility model purpose is, fibre optic liquid level sensor, U-shaped sensing head 10, incident optical 8, answer the smooth optic fibre 9 constitute optical fiber sensing head 1, optical fiber sensing head 1 is installed on the probe socket, probe socket 2 is contained in the fiber-optic probe bar 3, and fiber-optic probe bar 3 connects photoelectrical coupler in the armored cassette 7 and outer output cable thereof.
The utility model delicate structure, dependable performance, cost is low, volume is little, long service life, high temperature resistant, high pressure, corrosion-resistant, no electro-detection, safety anti-explosive, simple installation, measure accurate, highly sensitive, can be according to the spacing placement location that changes at any time, limiting overload, the situation of carrying takes place less, avoids because of generation super, that be fully loaded with caused blast, accident on fire.
Description of drawings
Fig. 1 the utility model structural representation
Fig. 2 a, b optical fiber sensing head of the present utility model fundamental diagram
Embodiment is with reference to Fig. 1, and the utility model is made of optical fiber sensing head, probe socket, armored cassette etc.The optical fiber sensing head is made of U-shaped sensing head 10, incident optical 8, answer the smooth optic fibre 9.Optical fiber sensing head 1 is installed on the probe socket, and probe socket 2 is contained in the fiber-optic probe bar 3, and fiber-optic probe bar 3 connects photoelectrical coupler in the armored cassette 7 and outer output cable thereof.For adapting to the requirement of work on the spot condition, fiber-optic probe bar 3 links to each other with armored cassette 7 by coupling shaft 4, metallic bellows 5, like this, has not only protected optical fiber but also be convenient to install, and has also increased the physical strength of product, has enlarged the usable range of product.
With reference to Fig. 2 a, the optical fiber sensing head is made of U-shaped sensing head 10, incident optical 8, answer the smooth optic fibre 9.Infrared light is by incident optical 8 directive answer the smooth optic fibre, and in the air shown in Fig. 2 a, infrared light 12 carries out total reflection at U-shaped sensing head 10 places, light intensity the last 13 in the answer the smooth optic fibre 9; And in the liquid shown in Fig. 2 b, infrared light 12 at U-shaped sensing head place to liquid 11 refraction, in the answer the smooth optic fibre light intensity 13 a little less than.The utility model promptly converts electric signal to according to strong, weak signal to the photoelectrical coupler of the light in the answer the smooth optic fibre, after electronic circuit commonly used is handled, by cable output no liquid is arranged, or the signal of liquid level change.
The signal output of the utility model U-shaped sensing head in the air neutralising fluid is than reaching 35db, and can export different light modulating signals under the situation of liquid level change less than 0.5mm.
Claims (3)
1, fibre optic liquid level sensor, it is characterized in that U-shaped sensing head (10), incident optical (8), answer the smooth optic fibre (9) constitute optical fiber sensing head (1), optical fiber sensing head (1) is installed on the probe socket, probe socket (2) is contained in the fiber-optic probe bar (3), and fiber-optic probe bar (3) connects photoelectrical coupler, photoelectric commutator and the outer output cable thereof in the armored cassette (7).
2, fibre optic liquid level sensor according to claim 1 is characterized in that fiber-optic probe bar (3) links to each other with metallic bellows (5) by coupling shaft (4), and metallic bellows (5) other end links to each other with armored cassette (7).
3, fibre optic liquid level sensor according to claim 1 is characterized in that the signal output of U-shaped sensing head in the air neutralising fluid is than being 35db.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017703 CN2689191Y (en) | 2004-04-09 | 2004-04-09 | Optical-fibre level sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017703 CN2689191Y (en) | 2004-04-09 | 2004-04-09 | Optical-fibre level sensors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2689191Y true CN2689191Y (en) | 2005-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420017703 Expired - Fee Related CN2689191Y (en) | 2004-04-09 | 2004-04-09 | Optical-fibre level sensors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2689191Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031960A (en) * | 2010-12-15 | 2011-04-27 | 中国石油天然气股份有限公司 | Method and device for measuring liquid level of oil well |
| CN106706542A (en) * | 2011-06-07 | 2017-05-24 | 精量电子(美国)有限公司 | Low-temperature safe sensor package and fluid properties sensor |
| CN112325983A (en) * | 2020-10-22 | 2021-02-05 | 安徽皖控自动化仪表有限公司 | High-resolution optical fiber liquid level sensor for oil level measurement |
-
2004
- 2004-04-09 CN CN 200420017703 patent/CN2689191Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031960A (en) * | 2010-12-15 | 2011-04-27 | 中国石油天然气股份有限公司 | Method and device for measuring liquid level of oil well |
| CN102031960B (en) * | 2010-12-15 | 2013-12-04 | 中国石油天然气股份有限公司 | Method and device for measuring liquid level of oil well |
| CN106706542A (en) * | 2011-06-07 | 2017-05-24 | 精量电子(美国)有限公司 | Low-temperature safe sensor package and fluid properties sensor |
| CN106706542B (en) * | 2011-06-07 | 2020-03-27 | 精量电子(美国)有限公司 | Low-temperature safety sensor assembly and fluid sensor |
| CN112325983A (en) * | 2020-10-22 | 2021-02-05 | 安徽皖控自动化仪表有限公司 | High-resolution optical fiber liquid level sensor for oil level measurement |
| CN112325983B (en) * | 2020-10-22 | 2022-07-19 | 安徽皖控自动化仪表有限公司 | High-resolution optical fiber liquid level sensor for oil level measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHANG JING; PATENTEE Free format text: FORMER OWNER: WANG GANG; PATENTEE Effective date: 20070629 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070629 Address after: 430061 friendship zone, friendship road, Wuchang District, Hubei, Wuhan, 5-2-2 Co-patentee after: Zhang Hanwu Patentee after: Zhang Jing Address before: 430060 No. 161 flower embankment street, Wuchang District, Hubei, Wuhan Co-patentee before: Zhang Jing Patentee before: Wang Qigang Co-patentee before: Zhang Hanwu |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 Termination date: 20100409 |