CN202141436U - Device for mounting and protecting fiber optic sensor - Google Patents
Device for mounting and protecting fiber optic sensor Download PDFInfo
- Publication number
- CN202141436U CN202141436U CN201120167357U CN201120167357U CN202141436U CN 202141436 U CN202141436 U CN 202141436U CN 201120167357 U CN201120167357 U CN 201120167357U CN 201120167357 U CN201120167357 U CN 201120167357U CN 202141436 U CN202141436 U CN 202141436U
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- China
- Prior art keywords
- sensor
- fiber optic
- protection box
- optical sensor
- fibre optical
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- Expired - Fee Related
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a device for mounting and protecting fiber optic sensor, comprising: mounting a cavity protection box for a fiber optic head of a fiber optic sensor; connecting an air pipeline on the rear end of the protection box; arranging an air outlet which is corresponding to the fiber optic head of the sensor on the front end of the protection box; and communicating an air inlet with the air outlet. As the protection box uses a cavity structure and the fiber optic head of the fiber optic sensor is fixed in the protection box, the fiber optic head is protected completely and the mechanical strength and the protection level are improved so as to prevent the fiber optic sensor from damaging by friction of a steel strip. Besides, as the compressed gas enters the cavity from the rear end of the protection box and flows through the upper and lower surfaces of the fiber optic head and is discharged from the air inlet, a suitable work environment temperature can be provided to the sensor working in a high temperature site condition, and at the same time certain pressure gas exists and is spouted out so that positive pressure environment is formed in the cavity of the protection box, thus avoiding intrusion of dust, splashed liquid and grease, and the like and guaranteeing cleanness of the detection fiber optic head of the sensor.
Description
Technical field
The utility model relates to a kind of Fibre Optical Sensor to be installed and protective device, is specially and a kind ofly can prevents the liquid splash, prevents that dust from invading, anti-collision, resistant to elevated temperatures Fibre Optical Sensor install and protective device.
Background technology
Because the grating sensor measuring accuracy is high, range of dynamic measurement is wide, can carry out noncontacting measurement, be prone to the robotization and the digitizing of realization system; Thereby in the manufacturing industry industry, obtained using widely; But the protective capacities when the on-the-spot use of Fibre Optical Sensor of usefulness is very low at present; Easy liquid body, dust, greasy dirt influence or after the mechanical collision friction, accuracy of detection occurs and descend, show and forbidden or damage, and the range of application of Fibre Optical Sensor and environment for use are restricted.
Following reference and the defective that combines accompanying drawing 1 (existing fiber sensor installation application synoptic diagram) brief description existing fiber sensor on installing and using, to exist.As shown in Figure 1, what it appeared is to utilize Fibre Optical Sensor to realize the radial displacement that high-speed cruising band steel takes place is detected the case of control, and among the figure, arrow is the steel band traffic direction.The receiving end optical fiber head 1 and the transmitting terminal optical fiber head 2 of Fibre Optical Sensor are directly installed on respectively on the base plate 5; Frictional impact very easily takes place because of self shake and radial displacement with sensor receiving end optical fiber head 1, transmitting terminal optical fiber head 2 in the band steel 4 under the high-speed cruising state to be detected; Cause rectangle optical fiber tube deformed damaged or light slit 6 to be blocked; Very easily adhere to dust on the light slit 6 of sensor simultaneously; In a single day on-the-spot greasy dirt, dust, liquid invade sensor light slit 6, and the emission that will have influence on light detects with reception, causes sensor can't effectively detect and control output.
The applicant retrieves discovery, and patent ZL 200820162979.2 discloses a kind of grating of guide belt ink-jet decorating machine and installed and protective device, and this utility model realizes dustproof, the splashproof ability of grating through increase dust excluder and baffle plate at grating detection head place; Patent ZL200420077329.X discloses a kind of high protective grid type displacement transducer, and it is that the purpose that modes such as protection curtain, strip and rubber and plastic skirt improve the anti-greasy dirt splash of sensor, anti-airborne dust is set through increase.Two parts of disclosed technical schemes of documents can't be protected the normal use of grating under hot environment.
The utility model content
The utility model wants the technical solution problem to be: the above-mentioned shortcoming that exists in using at the scene to existing ordinary optic fibre sensor; Proposing a kind of Fibre Optical Sensor installs and protective device; Make Fibre Optical Sensor can prevent effectively that liquid splash, dust from invading, anti-collision, high temperature resistant in the use at the scene; The function precision is more stable, has expanded the application of Fibre Optical Sensor under rugged surroundings.
In order to solve above technical matters; A kind of Fibre Optical Sensor of the utility model is installed and protective device; It is characterized in that comprising: the cavate protection box that the Fibre Optical Sensor optical fiber head is installed; The rear end of said protection box is connected with gas pipeline, and protection box front end has and the corresponding exhausr port of sensor fiber head light slit, said admission line and exhausr port UNICOM.
The protection box adopts cavity structure, and the Fibre Optical Sensor optical fiber head is fixed in the protection box, and optical fiber head has been carried out general protection, has improved its physical strength and degree of protection, prevents to be caused damage by the steel band grazing.Pressure gas gets in the chamber from protection box rear end; The flow through upper and lower surfaces of optical fiber head and discharge from exhausr port; The sensor that can work for the high temperature site environment down provides suitable operating ambient temperature, and the existence and the ejection of certain pressure gas simultaneously forms positive pressure environment in protection box inside cavity; Avoid dust and intrusion such as the liquid greasy dirt that splashes, guaranteed the cleanliness of sensor optical fiber head.
Further, in installation of this Fibre Optical Sensor and the protective device, the angle between the optical path direction of the discharge directions of exhausr port and the reception of sensor fiber head or emission light is 30-60 °, preferred 45 °.This structure guarantees that the gas of discharging from sensor emission end protection box, sensor receiving end protection box exhausr port respectively interlaces, and avoids from the pressure gas of exhausr port ejection dust being blown in the light slit of offside optical fiber head.
Further; Gas pipeline is provided with pressure-regulating valve; Can regulate the pressure of discharging gas through this pressure-regulating valve, possibly detect the harmful effect that is produced to detected material thereby eliminate the gas of discharging, and can adapt to the on-the-spot requirement of using.
Further again; The utility model Fibre Optical Sensor is installed and the inlet end of protective device gas pipeline is provided with gas filter; The cleanliness that are used for cooling off and forming the gas of subnormal ambient of assurance device ejection avoid forming the secondary pollution to light slit.
The beneficial effect of this novel scraper is, the optical fiber head of Fibre Optical Sensor is complete to be embedded in the chamber of unit protection box, and optical fiber head has been carried out general protection, has improved its physical strength.The introducing of pure pressure gas, ejection; When taking away the optical fiber head heat, make the sensor fiber head be in a kind of working environment of malleation; Intrusions such as splash liquid, dust have effectively been avoided; Guaranteed the cleanliness of optical fiber tube, greatly degree promotes the serviceability of Fibre Optical Sensor under rugged surroundings.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is an existing fiber sensor installation application synoptic diagram.
Fig. 2 is that the utility model Fibre Optical Sensor is installed and protective device.
Fig. 3 is that the utility model Fibre Optical Sensor is installed and protective device is used synoptic diagram.
Fig. 4 installs and the protective device cut-open view.
Embodiment
The Fibre Optical Sensor of present embodiment is installed and protective device; As shown in Figure 2; Comprise: the cavate protection box (forming) that the Fibre Optical Sensor optical fiber head is installed by box body 10, lid 11; The rear end of protection box is connected with gas pipeline 14, and protection box front end has the exhausr port 7 corresponding with sensor fiber head light slit, admission line 14 and exhausr port 7 UNICOMs.The inlet end of gas pipeline 14 is provided with gas filter 13.Gas pipeline 14 is provided with pressure-regulating valve 12.
As shown in Figure 3, be the Fibre Optical Sensor installation of present embodiment and the application synoptic diagram of protective device.The label signal is referring to Fig. 1 and Fig. 2 among the figure.
Dust is blown in the light slit of offside optical fiber head for fear of pressure gas; As shown in Figure 4; Present embodiment exhausr port 7,7 ' discharge directions and sensor fiber head receive or the optical path direction of emission light between angle be 45 °; And angle is in the opposite direction when mounted, and the gas that makes transmitting terminal protection box, receiving end protection box blow out like this interlaces, and does not disturb mutually.Among Fig. 4, be 7 ' be transmitting terminal protection box exhausr port, 11 ' be transmitting terminal protection box lid, 10 ' protect the box box body for transmitting terminal, 14 ' be the gas pipeline of protecting box to be connected with transmitting terminal, 6 ' be the light slit of transmitting terminal optical fiber head, 2 is the transmitting terminal optical fiber head.All the other label signals are referring to Fig. 2.
After using this device; Because the existence of sensor fiber head surrounding housing; The quick inflow of pressure gas is passed through, both taken away the sensor fiber pipe heat, improve its temperature environment, make device lumen internal milieu pressure greater than cavity outer air pressure simultaneously; Thereby effectively avoided splashing of dust and liquid, the cleanliness of optical fiber head are guaranteed.
Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (6)
1. a Fibre Optical Sensor is installed and protective device; It is characterized in that comprising: the cavate protection box that the Fibre Optical Sensor optical fiber head is installed; The rear end of said protection box is connected with gas pipeline; Protection box front end has and the corresponding exhausr port of sensor fiber head light slit, said admission line and exhausr port UNICOM.
2. install and protective device according to the said Fibre Optical Sensor of claim 1, it is characterized in that: the angle between the optical path direction of the discharge directions of said exhausr port and the reception of sensor fiber head or emission light is 30-60 °.
3. install and protective device according to the said Fibre Optical Sensor of claim 1, it is characterized in that: the angle between the optical path direction of the discharge directions of said exhausr port and the reception of sensor fiber head or emission light is 45 °.
4. install and protective device according to each said Fibre Optical Sensor of claim 1-3, it is characterized in that: the inlet end of said gas pipeline is provided with gas filter.
5. install and protective device according to the said Fibre Optical Sensor of claim 4, it is characterized in that: said gas pipeline is provided with pressure-regulating valve.
6. install and protective device according to the said Fibre Optical Sensor of claim 5, it is characterized in that: said cavate protection box is made up of box body, lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120167357U CN202141436U (en) | 2011-05-20 | 2011-05-20 | Device for mounting and protecting fiber optic sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120167357U CN202141436U (en) | 2011-05-20 | 2011-05-20 | Device for mounting and protecting fiber optic sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141436U true CN202141436U (en) | 2012-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120167357U Expired - Fee Related CN202141436U (en) | 2011-05-20 | 2011-05-20 | Device for mounting and protecting fiber optic sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869378A (en) * | 2014-03-26 | 2014-06-18 | 康健康 | Infrared sensor protection cover and infrared sensor for automatic spraying device |
| WO2018100255A1 (en) * | 2016-12-02 | 2018-06-07 | Arianegroup Sas | Passive device for decreasing the pollution of an optical access of an optical instrument |
-
2011
- 2011-05-20 CN CN201120167357U patent/CN202141436U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869378A (en) * | 2014-03-26 | 2014-06-18 | 康健康 | Infrared sensor protection cover and infrared sensor for automatic spraying device |
| WO2018100255A1 (en) * | 2016-12-02 | 2018-06-07 | Arianegroup Sas | Passive device for decreasing the pollution of an optical access of an optical instrument |
| FR3059575A1 (en) * | 2016-12-02 | 2018-06-08 | Airbus Safran Launchers Sas | PASSIVE DEVICE FOR REDUCING THE POLLUTION OF OPTICAL ACCESS TO AN OPTICAL INSTRUMENT |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20190520 |