CN205374288U - Gaseous telemetry unit of off -axis formula - Google Patents
Gaseous telemetry unit of off -axis formula Download PDFInfo
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- CN205374288U CN205374288U CN201521134091.4U CN201521134091U CN205374288U CN 205374288 U CN205374288 U CN 205374288U CN 201521134091 U CN201521134091 U CN 201521134091U CN 205374288 U CN205374288 U CN 205374288U
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Abstract
The utility model provides a gaseous telemetry unit of off -axis formula, telemetry unit includes light source, smooth part and the first detector assembled, telemetry unit includes: the printing opacity part that has the angle of wedge, the printing opacity part of the angle of wedge sets up aslope in the light path of the measurement light that the light source sent, the light source with the non - coaxial of part is assembled to light, remove the part, it is used for removing to remove the part light source and/or have the printing opacity part of the angle of wedge, the light source is the integer to change volume (img file='dest_path_DDA0000968285450000011. TIF'wi='291'he='117' /) the K of the optical distance between the smooth eye point of printing opacity part, and lambda does measure the light wavelength. The utility model has the advantages of accurate, the detection range is far away.
Description
Technical field
This utility model relates to gas detecting, particularly to off-axis formula gas remote measurement device.
Background technology
In natural gas applications, gas pipeline burn into is aging and the reason such as artificial destruction causes fuel gas pipeline leakage Frequent Accidents, traditional natural gas leaking detection method mainly has flame ionization detection method, electrochemical detection method, pipeline model leakage method etc., instrument based on flame ionization detection method and electrochemical detection method, needs closely detect, and response speed is slow simultaneously；Pipeline model leakage detection method program is loaded down with trivial details and that obtain data seriously lag behind the leakage situation at scene.
In order to solve the problems such as pipeline gas leakage, having developed now some remote indication instruments, most representational is this laser methane remote indication instrument of the Chinese, and this instrument takes the center at plus lens to open a hole, makes laser instrument coaxial with plus lens；And, this instrument also has a motor and the optical element moved with motor, is arranged in instrument by this molectron, changes the light path in light path by motor, to reach to eliminate the purpose of noise.This technical scheme has deficiency, as:
1. the receipts light area causing plus lens diminishes, and corresponding detection range can shorten, and reflects light and can be reflected back laser instrument, introduces unnecessary noise.
2. the motor increased improves the weight of instrument, makes instrument utilization get up not convenient；After increasing motor, the driving voltage of instrument increases, and power consumption increases, and is unfavorable for battery life；Owing to the type body of motor is big, driving voltage is high, can bring relatively larger noise into.And in this instrument, in addition it is also necessary to increase a new optical element, add the complexity of light path on the contrary, increase the difficulty of eliminated noise, be unfavorable for the optimization of properties of product.
Utility model content
In order to solve the deficiency in above-mentioned prior art, this utility model provides a kind of highly sensitive, off-axis formula gas remote measurement device that detection range is remote.
The purpose of this utility model is achieved through the following technical solutions:
A kind of off-axis formula gas remote measurement device, described telemetering equipment includes light source, light assembles parts and the first detector；Described telemetering equipment includes:
Having the light transparent member of the angle of wedge, the light transparent member of the described angle of wedge is arranged in the light path measuring light that light source sends obliquely, and described light source assembles parts non co axial with described light；
Mobile parts, described mobile parts are for moving described light source and/or having the light transparent member of the angle of wedge, and described light source is to the variable quantity of the light path between the light eye point of light transparent memberK is integer, and λ is the wavelength of described measurement light.
According to above-mentioned telemetering equipment, it is preferable that described mobile parts rotate or light transparent member described in upper and lower translation, or left and right translates described light source.
According to above-mentioned telemetering equipment, alternatively, described telemetering equipment farther includes:
Gas cell, described gas cell is in the light path of the part of described measurement light reflection light in described light transparent member；
Second detector, described second detector is for receiving the optical signal through described gas cell.
According to above-mentioned telemetering equipment, it is preferable that described gas cell and described second detector are coupled.
Compared with prior art, this utility model has the beneficial effect that
1. this utility model adopts off-axis light path mode, improves the receiving efficiency of reflection light, improves detection range；
2., by introducing change in optical path length amount, restrained effectively noise, and then improve detection sensitivity；
3. by changing light path so that also be able to be effectively reduced noise through measuring when light is reflected by different reflectors of region to be measured；
4. light transparent member of the present utility model and mobile parts are without influence on the light path of instrument, and lightweight, and noise is low, will not increase other adverse effects.
Accompanying drawing explanation
With reference to accompanying drawing, disclosure of the present utility model will be easier to understand.Skilled addressee readily understands that: these accompanying drawings are used only for illustrating the technical solution of the utility model, and are not intended to protection domain of the present utility model is construed as limiting.In figure:
Fig. 1 is the structure diagram of the off-axis formula gas remote measurement device according to this utility model embodiment 1.
Detailed description of the invention
Fig. 1 and following description describe optional embodiment of the present utility model to instruct how those skilled in the art implement and reproduce this utility model.In order to instruct technical solutions of the utility model, simplify or eliminated some conventional aspects.Those skilled in the art should understand that the modification being derived from these embodiments or replacement will in scopes of the present utility model.Those skilled in the art should understand that following characteristics can combine to form multiple modification of the present utility model in every way.Thus, this utility model is not limited to following optional embodiment, and is only limited by claim and their equivalent.
Embodiment 1:
Fig. 1 schematically illustrates the structure chart of the off-axis formula gas remote measurement device of this utility model embodiment, as it is shown in figure 1, described telemetering equipment includes:
Light source 11, light assemble parts 41 and the first detector 51；These parts are all the state of the art, do not repeat them here；
Having the light transparent member 21 of the angle of wedge, the light transparent member of the described angle of wedge is arranged in the light path measuring light that light source sends obliquely, and described light source assembles parts non co axial with described light；
Mobile parts, such as the piezoquartz after energising, described mobile parts are for moving described light source and/or having the light transparent member of the angle of wedge, and described mobile parts rotate or light transparent member as described in upper and lower translation, or left and right translates described light source；Make described light source to the variable quantity of the light path between the light eye point of light transparent memberK is integer, and λ is the wavelength of described measurement light；
Gas cell, described gas cell is in the light path of the part of described measurement light reflection light in described light transparent member 21；
Second detector 52, described second detector is for receiving the optical signal through described gas cell, and described gas cell and described second detector are coupled.
The gas remote measurement method of this utility model embodiment, the described method of telemetering comprises the following steps:
(A1) directive region to be measured after the light transparent member with the angle of wedge that the measurement light traverse that light source sends is obliquely installed；
Moving described light source and/or have the light transparent member of the angle of wedge, rotated or light transparent member as described in upper and lower translation, or left and right translates described light source；Make described light source to the variable quantity of the light path between the light eye point of light transparent memberK is integer, and λ is the wavelength of described measurement light；
The part measuring light incided in described light transparent member is reflected, and reflection light is through gas cell, and transmission light is received by the second detector, and output signal send analytic unit；
(A2) being reflected through the measurement light in region to be measured by reflector 31, reflection light is assembled parts by light and is collected on the first detector；
Described light assembles parts and described light source non co axial；
(A3) utilize spectral technique to analyze the first detector and transmit the signal of telecommunication of coming, thus knowing the content of gas in region to be measured.
Claims (4)
1. an off-axis formula gas remote measurement device, described telemetering equipment includes light source, light assembles parts and the first detector；It is characterized in that: described telemetering equipment includes:
Having the light transparent member of the angle of wedge, the light transparent member of the described angle of wedge is arranged in the light path measuring light that light source sends obliquely, and described light source assembles parts non co axial with described light；
Mobile parts, described mobile parts are for moving described light source and/or having the light transparent member of the angle of wedge, and described light source is to the variable quantity of the light path between the light eye point of light transparent memberK is integer, and λ is the wavelength of described measurement light.
2. telemetering equipment according to claim 1, it is characterised in that: described mobile parts rotate or light transparent member described in upper and lower translation, or left and right translates described light source.
3. telemetering equipment according to claim 1, it is characterised in that: described telemetering equipment farther includes:
Gas cell, described gas cell is in the light path of the part of described measurement light reflection light on collimating lens；
Second detector, described second detector is for receiving the optical signal through described gas cell.
4. telemetering equipment according to claim 3, it is characterised in that: described gas cell and described second detector are coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521134091.4U CN205374288U (en) | 2015-12-30 | 2015-12-30 | Gaseous telemetry unit of off -axis formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521134091.4U CN205374288U (en) | 2015-12-30 | 2015-12-30 | Gaseous telemetry unit of off -axis formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205374288U true CN205374288U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521134091.4U Active CN205374288U (en) | 2015-12-30 | 2015-12-30 | Gaseous telemetry unit of off -axis formula |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527231A (en) * | 2015-12-30 | 2016-04-27 | 聚光科技(杭州)股份有限公司 | An off-axis type gas remote measurement device and a method |
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2015
- 2015-12-30 CN CN201521134091.4U patent/CN205374288U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527231A (en) * | 2015-12-30 | 2016-04-27 | 聚光科技(杭州)股份有限公司 | An off-axis type gas remote measurement device and a method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |