CN2463831Y - Laser imaging leak detector with optical member - Google Patents
Laser imaging leak detector with optical member Download PDFInfo
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- CN2463831Y CN2463831Y CN 00246242 CN00246242U CN2463831Y CN 2463831 Y CN2463831 Y CN 2463831Y CN 00246242 CN00246242 CN 00246242 CN 00246242 U CN00246242 U CN 00246242U CN 2463831 Y CN2463831 Y CN 2463831Y
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- light guide
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Abstract
The utility model relates to a laser imaging leak detector with optical members, which comprises the optical members placed between a laser device and measured objects on the basis of the original laser imaging leak detector, wherein, one end of the optical members is connected with a piece of lens used for making laser beams focus and diffuse, and the other end is directly connected with a window for output light of the laser device through an optical coupler. The utility model can change the direction of the laser irradiating the leak detected objects discretionally, making the leak detection work more convenient, and the work efficiency for the detection can be improved. The utility model is particularly suitable to carry out leak detection for a large-scale multi-section-head pipeline or a container.
Description
The utility model relates to the laser imaging leakage detection apparatus, particularly relates to a kind of laser imaging leakage detection apparatus with light guide member.
The existing leak hunting method that uses is broadly divided into four classes: pressure detection method, vacuum detecting method, gas detection method and ultrasonic Detection Method, as: list of references [1] Zhang Danhua, Xiao Shengyi translates: " sensor application ", [day] automatic technology editorial office, China Measuring Press, 1992.Wherein the gas detection method is better than other three class methods.In the gas detection method, commonly used have halogen detection method, temperature conductivity detection method and a helium detector etc.The leak detection sensitivity of this four classes leak hunting method is different, and the sensitivity that has is lower, and what have is higher, and the sensitivity of gas detection method all can reach year slip less than 1 gram, and wherein helium leak detector sensitivity is higher.Most widely used in the above-mentioned gas leak detection method is the halogen detection method, and the employed halogen gas sensor construction of halogen detection method as shown in Figure 1.The halogen detection method is that the platinum with heating serves as anodal 7, disposes negative pole 8 in its vicinity, pot 9, and well heater 10, heater power source 11 if form current potential, just has faint electric current to flow.But if there is halogen gas, then positive ion increases, and electric current increases.The halogen gas sensor utilizes this phenomenon to measure.The sensitivity of sensor is determined by gas concentration.Because of gas constantly spreads in air, along with the prolongation of time, sensitivity will descend, so leak detection sensitivity differs greatly according to the difference of using method.The common shortcoming of above-mentioned four class leak hunting methods is that testing staff's labour intensity is big when (1), leak detection, when taking a lot of work, has a strong impact on the progress of whole work.(2), they all can not position leak detection, especially in multinode leak detection process, above-mentioned four class leak hunting methods are difficult to provide the definite position of leakage.China Patent No. is 99111221.0, the laser imaging leakage detection apparatus that provides of patent application form by laser instrument, the gas cylinder that is filled with measured medium, imager and monitor.The defective of underaction when this device has and uses, for example a large-scale more piece pipeline or container being hunted leak is restricted.
The purpose of this utility model is that the beam direction that overcomes existing laser imaging leak test plant can not change arbitrarily, make leak test plant can not in large tracts of land, carry out multi-faceted leak detection, in existing device, light guide member is set, makes its leak detection work convenient, efficient; Particularly a large-scale more piece pipeline or container are hunted leak, thereby a kind of laser imaging leakage detection apparatus with light guide member is provided in order to be fit to.
The purpose of this utility model is achieved in that a kind of laser imaging leakage detection apparatus with light guide member that the utility model provides comprises laser instrument, is filled with gas cylinder, imager, scanner and the monitor of measured medium; Wherein detected material is placed in output light the place ahead of laser instrument, scanner head is between laser instrument and measured object, laser instrument output light direct irradiation is on the catoptron of scanner head, the mirror surface of laser beam and scanner head is at 45 approximately ± 5 ° of angles, on the place ahead light path of the scanner head mirror reflects of scanner output light, settle convex lens, convex lens output light is through being scanned into H width direct irradiation on detected material, imager is placed on the light path of detected material scattered light, and imager and monitor are electrically connected; Be filled with between valve and the detected material on the gas cylinder of measured medium and be connected by pipeline, it is characterized in that also comprising a light guide member between laser instrument and measured object, light guide member can be with light-conducting arm or light transmitting fiber, light-conducting arm is by n root straight tube, 45 ° of right-angle prisms of n-1 piece and lens are formed, wherein connect by a joint between two adjacent straight tubes, be placed in 45 ° of right-angle prisms in the joint respectively, be placed on an end of light-conducting arm as lens that laser beam is focused on or disperse, the other end directly is connected on the window of laser instrument output light with optical coupler.Light guide member or light transmitting fiber, light transmitting fiber one end directly are connected on the window of laser instrument output light with optical coupler, and the other end is connected and fixed one as the lens that can make laser beam focus on or disperse.Optical fiber is more more convenient than the direction that light-conducting arm changes laser beam as light guide member, and laser is littler than the loss by light-conducting arm by the loss of optical fiber.
The n=positive integer of wherein said n root straight tube light-conducting arm and 45 ° of right-angle prisms of n-1 piece.
Grasp the latter end (laser exit end) of light guide member during leak detection, mobile light guide member end can make the position of laser radiation on measured object make corresponding mobile, and which position laser radiation just can hunt leak on which position of measured object.
The utility model advantage or effect:
1. the utility model combines light guide member with laser leakage detecting equipment, can change laser radiation arbitrarily by the direction on the leak detection thing, seems holding electric torch, shines and where just can hunt leak to the place that shines.Thereby make leak detection work convenient, can improve testing efficient greatly.
2. used light guide member just can make the bigger effect of laser leakage detecting equipment performance, especially a large-scale more piece pipeline or container have been hunted leak, its advantage is more outstanding.If do not have light guide member, a large-scale more piece pipeline or container are carried out laser leakage detecting work with regard to being difficult to.
Fig. 1 is a structural representation of the present utility model
Fig. 2 is a light-conducting arm structural representation of the present utility model
Embodiment 1: make be used to hunt leak the band scanner of hydropower machine stator and the laser imaging leakage detection apparatus of light guide member by Fig. 1 and 2.This device comprises semiconductor laser 1, is filled with the gas cylinder 3 of measured medium, commercially available scanner 4 usually, monitor 5; Wherein detected material hydropower machine stator 2 places on the place ahead light path of output light of laser instrument 1; The camera lens of scanner 4 is facing to detected material hydropower machine stator 2, laser instrument output light direct irradiation is on the catoptron of scanner head, the mirror surface of laser beam and scanner head is at 45 approximately ± 5 ° of angles, on the place ahead light path of scanner head mirror reflects output light, settle convex lens, convex lens output light is through being scanned into H width direct irradiation on detected material, imager 6 is placed on the light path of detected material scattered light, and imager 6 and monitor 5 (general television set of various brands and various models gets final product) are electrically connected by lead; Be filled with between valve on the gas cylinder 3 of measured medium freon and the detected material hydropower machine stator 2 and connect to form by pipeline.As light guide member, light-conducting arm can be customized as requested with light-conducting arm, or directly buy to relevant factory.Present embodiment is selected the light-conducting arm in six joints for use, form by 6 straight tubes, 5 45 ° of right-angle prisms 7 and lens 8, wherein connect by a joint between two adjacent straight tubes, be placed in 45 ° of right-angle prisms 7 in the joint respectively, be placed on the exit of light-conducting arm one end as lens 8 that laser beam is focused on or disperse, the other end of light-conducting arm is fixed on the window of semiconductor laser (1) by a common photo-coupler.At this moment laser instrument 1 should be done vertical installation, and light-conducting arm at laser instrument 1 and between by leak detection thing 2, is held last joint of light-conducting arm, aims at by the leak detection thing, just can carry out leak detection work.
Embodiment 2: press embodiment 1 and make, just light guide member is done with optical fiber, optical fiber is placed between laser instrument and the leak detection thing, end at optical fiber can install focusing or extender lens as required additional, and the other end of optical fiber is fixed on the window of semiconductor laser (1) by a common photo-coupler.Hold the end of optical fiber, aim at, just can carry out leak detection work by the leak detection thing.
Claims (4)
1. laser imaging leakage detection apparatus with light guide member comprises laser instrument, is filled with gas cylinder, imager, scanner and the monitor of measured medium; Wherein detected material is placed in output light the place ahead of laser instrument, the scanner head of scanner is between laser instrument and measured object, laser instrument output light direct irradiation is on the catoptron of scanner head, the mirror surface of laser beam and scanner head is at 45 approximately ± 5 ° of angles, on the place ahead light path of scanner head mirror reflects output light, settle convex lens, convex lens output light is through being scanned into H width direct irradiation on detected material, imager is placed on the light path of detected material scattered light, and imager and monitor are electrically connected; Be filled with between valve and the detected material on the gas cylinder of measured medium and be connected by pipeline, it is characterized in that also comprising a light guide member between laser instrument and measured object, one end of light guide member connects one as lens that can make laser beam focus on or disperse, and the other end directly is connected on the window of laser instrument output light with optical coupler.
2. by the described a kind of laser imaging leakage detection apparatus of claim 1, it is characterized in that described light guide member is with light-conducting arm or light transmitting fiber with light guide member.
3. by claim 1,2 described a kind of laser imaging leakage detection apparatus with light guide member, it is characterized in that light-conducting arm is made up of n root straight tube, 45 ° of right-angle prisms of n-1 piece and lens, wherein connect by a joint between two adjacent straight tubes, be placed in 45 ° of right-angle prisms in the joint respectively, be placed on an end of light-conducting arm as lens that laser beam is focused on or disperse, the other end directly is connected on the window of laser instrument output light with optical coupler.
4. by the described a kind of laser imaging leakage detection apparatus of claim 1, it is characterized in that the n=positive integer of described n root straight tube light-conducting arm and 45 ° of right-angle prisms of n-1 piece with light guide member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00246242 CN2463831Y (en) | 1999-08-27 | 2000-08-02 | Laser imaging leak detector with optical member |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99118921.3 | 1999-08-27 | ||
| CN99118921 | 1999-08-27 | ||
| CN 00246242 CN2463831Y (en) | 1999-08-27 | 2000-08-02 | Laser imaging leak detector with optical member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2463831Y true CN2463831Y (en) | 2001-12-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00246242 Expired - Fee Related CN2463831Y (en) | 1999-08-27 | 2000-08-02 | Laser imaging leak detector with optical member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2463831Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403091C (en) * | 2003-02-12 | 2008-07-16 | Lg电子有限公司 | Projecting optical system |
-
2000
- 2000-08-02 CN CN 00246242 patent/CN2463831Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100403091C (en) * | 2003-02-12 | 2008-07-16 | Lg电子有限公司 | Projecting optical system |
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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 |