CN205920032U - Low transmission loss's dust detection device - Google Patents

Abstract

The utility model discloses a low transmission loss's dust detection device, a serial communication port, including optical emitter, photoemissive tube way, light suction pipe, leaded light stick and photoelectric receiver, wherein, the optical emitter is located the one end of dust detection device is suitable for radiation beam to arrive the photoemissive tube way, one end that photoemissive tube said with the optical emitter is connected, the other end with be provided with the clearance that supplies the dust flue gas to pass through between the light suction pipe, excellent some of leaded light is located light is among the suction pipe, the one of which terminal surface be suitable for receive photoemissive tube say jet out, the light after the scattering of flue gas dust, and with its conduction extremely photoelectric receiver, photoelectric receiver is located light is outside the suction pipe, its with leaded light stick diametric connection, be suitable for with the light signal conversion that the conduction of leaded light stick comes is the signal of telecommunication.

Description

A kind of dust investigating of low transmission loss

Technical field

This utility model is related to flue gas field of detecting, more particularly, to a kind of dust investigating of low transmission loss.

Background technology

With the fast development of interchangeable manufacturing, problem of environmental pollution also increasingly causes the extensive attention of people, to people Life and health bring many harmful effects.Alleviate smoke pollution in order to effective, need to industrial smoke Grain thing concentration carries out on-line monitoring to provide strong data-guiding.

At present, commonly used method is mainly: by the fume extraction in chimney out, is heated to more than dewpoint So that water droplet is evaporated, then measure the concentration of particulate matter by detector under the conditions of dry flue gas.When detection means is detected, The such as laser beam launched in detection means reaches reflecting mirror after dust granules scattering, and reflecting mirror reflects the light onto In light absorbs conduit, the photoelectric sensor being arranged in light absorbs pipeline converts optical signal into the signal of telecommunication further.But, During reflection from lens light beam, a part of light can be lost, lead to the degree of accuracy detecting to decline.And, because having in light absorbs conduit Uniform temperature, sensor is placed in catheter interior and can bring adverse effect to measurement result.

At present generally by photoelectric sensor and optical transmitting set with holding design, after scattering light being converged by concave mirror, pass through Quartz pushrod and optical fiber return to photoelectric detector.But in this case, particulate matter is liable to stick in concave mirror, cause detection dress The pollution put.The end (scattered light upstream end) that couples of quartz pushrod and optical fiber is in bending hence it is evident that being unfavorable for the conduction of scattered light.Warp Test, the loss of optical fiber reaches 60% about.In addition, when detection means occur pollution when, this structure be also not susceptible to into Row is removed contamination calibration, needs that dismounting whole device could take out quartz pushrod and optical fiber is cleaned.

Utility model content

In consideration of it, this utility model provides a kind of dust investigating of low transmission loss, to try hard to solve or at least Alleviate the problem existing above.

According to one side of the present utility model, there is provided a kind of dust investigating of low transmission loss, comprising: light is sent out Emitter, light-emitting tube road, light absorbs pipeline, lamp guide and photelectric receiver, wherein, optical transmitting set is located at dust investigating One end, is suitable to transmit a light beam to light-emitting tube road；The one end in light-emitting tube road is connected with optical transmitting set, the other end and light absorbs pipe It is provided with the gap passed through for dust flue gas between road；A part for lamp guide is located in light absorbs pipeline, and one end is suitable to Receiving light transmitting pipeline projects, the light after exhaust gas dust scattering, and is conducted to photelectric receiver；Photelectric receiver is located at Outside light absorbs pipeline, it is radially connected with lamp guide, and the optical signal being suitable to carry out lamp guide conduction is converted to the signal of telecommunication.

Alternatively, according in dust investigating of the present utility model, also include governor circuit, lead to photelectric receiver Cross holding wire to be connected, be suitable to receive the described signal of telecommunication from described photelectric receiver, and dust is calculated according to the described signal of telecommunication The concentration of grain.

Alternatively, according in dust investigating of the present utility model, governor circuit includes amplifying circuit, a/d conversion Device and microprocessor, amplifying circuit is suitable to be amplified the signal of telecommunication, and a/d transducer is suitable to for the signal after amplifying to be converted to number Word signal, microprocessor is suitable to be calculated the concentration of dust granules according to digital signal.

Alternatively, according in dust investigating of the present utility model, governor circuit and light source emitter are encapsulated in In instrument case, governor circuit includes optical transmitting set drive module, is suitable to drive optical transmitting set transmitting light beam.

Alternatively, according in dust investigating of the present utility model, a diameter of 6-15mm of lamp guide, with incident beam Setting in a certain angle, described angular range is [15 °, 20 °]；Wherein, lamp guide is quartz pushrod.

Alternatively, according in dust investigating of the present utility model, near light absorbs pipeline in light-emitting tube road One end is provided with first baffle, and first baffle is provided with the first diaphragm opening being suitable to that light beam passes through；Close in light absorbs pipeline The one end in light-emitting tube road is provided with second baffle；The second diaphragm opening being suitable to that light beam passes through is provided with second baffle.

Alternatively, according in dust investigating of the present utility model, the side in light-emitting tube road is provided with inflatable mouth, The gas being blown into light-emitting tube road from inflatable mouth, sprays to dust flue gas by the first diaphragm opening.

Alternatively, according in dust investigating of the present utility model, also include connection member, one part is located at light In transmitting pipeline, another part is connected through first baffle with light absorbs pipeline.

Alternatively, according in dust investigating of the present utility model, connection member is connecting pipe, with light-emitting tube Road and light absorbs pipeline all communicate；The gas being blown into light-emitting tube road from inflatable mouth, enters into light also by this connecting pipe In extraction duct, and dust flue gas are sprayed to by the second diaphragm opening.

Alternatively, according in dust investigating of the present utility model, in light absorbs pipeline, deviate from light-emitting tube road One end is provided with light absorber, is suitable to absorb incident beam.

According to the technical solution of the utility model, by arranging lamp guide in light absorbs pipeline, scattered light is directly passed Lead outside light absorbs pipeline and be located in the photelectric receiver of the optical transmitting set other end, thus both having met opto-electronic receiver Device is arranged on the demand outside light absorbs pipeline, without using concave mirror with have the optical fiber of bending section and light is conducted by quartz pushrod To the photelectric receiver positioned at optical transmitting set one end.So, both can guarantee that the receiving area to light beam, and also can substantially reduce bending Optical fiber attenuation caused by section, it is to avoid the impact to accuracy of measurement after concave mirror is contaminated, so that through exhaust gas dust Light after granule scattering can directly be received by a detector, and decreases the loss of light beam, improves the accuracy of detection of flue gas.Separately Outward, this utility model to do the cleaning of optical fiber (quartz pushrod) also without the whole air chamber disassembling detection means, and only need to will not have The lamp guide having bending is released from light absorbs pipeline and can be cleaned.

Brief description

In order to realize above-mentioned and related purpose, herein in conjunction with explained below and accompanying drawing, some illustrative sides to be described Face, these aspects indicate can be to put into practice the various modes of principles disclosed herein, and all aspects and its equivalent aspect It is intended to fall under in the range of theme required for protection.By detailed description below be read in conjunction with the accompanying, the disclosure above-mentioned And other purpose, feature and advantage will be apparent from.Throughout the disclosure, identical reference generally refers to identical Part or element.

Fig. 1 shows the signal of the dust investigating 100 of the low transmission loss according to one embodiment of this utility model Figure；

Fig. 2 a and Fig. 2 b shows that the part section of the dust investigating 100 of low transmission loss shown in Fig. 1 is illustrated Figure；

Fig. 3 shows that the purge gass flow direction in the dust investigating 100 according to low transmission of the present utility model loss is shown It is intended to；

Fig. 4 a and Fig. 4 b shows the schematic diagram of the dust investigating according to another embodiment of this utility model.

Specific embodiment

It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing Exemplary embodiment it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here Limited.On the contrary, these embodiments are provided to be able to be best understood from the disclosure, and can be by the scope of the present disclosure Complete conveys to those skilled in the art.

Fig. 1 is the schematic diagram of the dust investigating 100 of the low transmission loss according to one embodiment of this utility model.Figure 2a and Fig. 2 b is the partial sectional view of Fig. 1 respectively.Wherein, Fig. 1 shows the exterior perspective view of whole device, but this utility model Dust investigating 100 part-structure be located at structure shown in Fig. 1 inside, its particular location can be in conjunction with Fig. 2 a and Fig. 2 b In partial sectional view determine.

Optical transmitting set, light-emitting tube road 110, light absorbs pipeline are included according to dust investigating 100 of the present utility model 120th, lamp guide 130 and photelectric receiver 140.

Optical transmitting set (not shown) is located at one end of dust investigating 100, and further, it is located at instrument case In 150, it is connected with light-emitting tube road 110, is used for transmitting a light beam to light-emitting tube road 110.Optical transmitting set can be laser Emitter.It being understood, however, that the restriction of this utility model not light emitter types, all can realize launching the light of light beam Emitter is all in protection domain of the present utility model.In fig. 1 and 2, the thick straight line being through to the right side from a left side is incident Light beam, light beam place straight line is incident light axis.

The one end in light-emitting tube road 110 connects optical transmitting set, and the other end with light absorbs pipeline 120 spaced a predetermined distance, claims Be gap.The flue that this intersegmental gap can be passed through as flue gas, the hollow arrow direction in Fig. 1 is the circulation side of flue gas To showing the multiple dust granules in this flue, as measured zone in Fig. 2 b.The outside in light-emitting tube road 110 is provided with outer Cover 111, outer housing can be metal housing.In the outside of outer housing 111, the one end near light absorbs pipeline 120 can arrange installation Flange 114, is conveniently fixed to this device.Wherein, light-emitting tube road 110 is provided near one end of light absorbs pipeline 120 One baffle plate 112, prevents exhaust gas dust from entering in pipeline and causes polluting and affecting accuracy of detection of pipeline.In addition, in first gear Plate is provided with the first diaphragm opening 113 passing through for light beam.

As shown in Figure 2 b, after the dust granules in the measured region of a part of light projected from the first diaphragm opening 113 The scattered light of all directions can be produced, the light after scattering and light beam can enter light absorbs pipeline 120.Some scattered light (can be recognized The scattered light in region comprising for two dotted lines) incide the end face of lamp guide 130, reach photelectric receiver through lamp guide 140, photelectric receiver converts optical signals into the signal of telecommunication, carries out data processing and inversion calculating to this signal, you can obtain smoke The concentration value of particulate matter in gas.

It also is provided with outer housing 121, it is additionally provided with second gear near the one end in light-emitting tube road 110 outside light absorbs pipeline 120 Plate 122, is provided with the second diaphragm opening 123 passing through for light beam on second baffle.Light after dust granules scattering and light beam Light absorbs pipeline 120 can be entered by the second diaphragm opening 123, to carry out the detection of flue gas particle concentration.Wherein, the second diaphragm Hole 122 can be more bigger than the first diaphragm opening 112 diameter, to ensure the having end face to lamp guide 130 for more transmission of stray light On.

A part for lamp guide 130 be located at light absorbs pipeline 120 in, another part outside light absorbs pipeline 120, lamp guide End be connected with photelectric receiver 140.One end receives light-emitting tube road 110 and projects, after exhaust gas dust scattering Light, conducted to photelectric receiver 140.Lamp guide 130 is in a certain angle with input path, generally selects and can accept at most The angle of scattered light intensity, also avoids the light receiving not propagate along lamp guide, and directly transmission is gone out from lamp guide.This practicality The excessively multiple research of Novel warp is calculated and finds that angular range can be [15 °, 20 °], it is possible to further be after being transformed with test 18 ° ± 2 °, wherein most preferably can select 18 °.

In addition, the diameter of lamp guide should not select excessive, in order to avoid causing the excessive attachment pollution detection device of dust；Also not Preferably select too small, in order to avoid the scattered light intensity receiving is too weak, affect certainty of measurement.Equally, calculate and test through multiple research Find after transformation to select the diameter range of 6-15mm, optimal can select 10mm.And, the light-receiving of lamp guide 130 End can also be arranged on fixed pedestal, and this pedestal is similar to the supporting structure of gun barrel, for fixing this lamp guide in the optical path Position, thus ensure the stability of receiving light.Generally, this fixed pedestal is provided with groove and stretches out for lamp guide 130.According to a reality Apply example, lamp guide can be quartz pushrod.

Photelectric receiver 140 is located at outside light absorbs pipeline 120, radially connected with lamp guide 130, for by lamp guide 130 The optical signal that conduction comes is converted to the signal of telecommunication.Usually, photelectric receiver 140 can be electronic component, it being understood, however, that institute Have and can realize receiving light, and convert optical signals into the detector of the signal of telecommunication all in protection domain of the present utility model.

Further, governor circuit is also included according to dust investigating 100 of the present utility model, with photelectric receiver 140 are connected by holding wire, are suitable to receive the signal of telecommunication of photelectric receiver 140, and obtain dust after carrying out Treatment Analysis Grain concentration.Additionally, governor circuit can also include amplifying circuit, a/d transducer and microprocessor.Wherein, amplifying circuit is permissible The signal of telecommunication that photelectric receiver 140 is sent is amplified, and the signal after amplifying can be converted to numeral letter by a/d transducer Number, microprocessor can be calculated the concentration of described dust granules according to this digital signal.

Governor circuit can be any circuit structure enabling above-mentioned functions, can be absolute construction or point Put structure, this utility model is not restricted to this.According to an embodiment, governor circuit can be arranged in instrument case 150, with Optical transmitting set is packed together.In addition, governor circuit can also include optical transmitting set drive module, it is suitable to drive optical transmitting set to send out Irradiating light beam, such as adjusts frequency or power of optical transmitting set etc..

Further, in the light shaft end of light absorbs pipeline, it is additionally provided with light absorber 160.Incident illumination is through powder in gap Light absorbs pipeline 120 is entered, a portion light is received by lamp guide 130 and photelectric receiver 140, also after the scattering of dirt granule A part of scattered light and light beam may proceed to propagate along before optical axis direction, until by the light absorber 160 of light absorbs pipeline 120 end Absorbed.As such, it is possible to reduce reflex in extraction duct for the light, thus improving accuracy of detection.

Additionally, connection member 170 can also be arranged between light-emitting tube road 110 and light absorbs pipeline 120, for fixing Described dust investigating, one part is located in light-emitting tube road 110, and another part passes through first baffle 111 and light absorbs Pipeline 120 is connected.Light-emitting tube road 110 and light absorbs pipeline 120 can be attached via metal connecting tube it is also possible to divide Open up and put.For example, when using this dust investigating, can will be fixed on building to equipment, directly flue gas be carried out Detection, and when light-emitting tube road 110 and light absorbs pipeline 120 are provided separately, the metallic connection parts of light absorbs pipeline 120 setting One end of part can secure the device on building, and light-emitting tube road 110 is supported by such as support.Wherein, should Connection member can be the connecting pipe being connected with light-emitting tube road 110 and light-receiving pipeline 120.

Further, purging wind unit is also set up according to the dust investigating 100 of low transmission of the present utility model loss, Prevent dust flue gas from carrying out in pipeline, also ensure that being uniformly distributed in flue of dust flue gas.Specifically, in light-emitting tube The side in road is provided with inflatable mouth 180, is blown into gas from this inflatable mouth is to light-emitting tube road 110.

Fig. 3 show according in dust investigating of the present utility model purging wind flow to schematic diagram it is believed that Fig. 3 It is the top perspective view of Fig. 1.As shown in figure 3, the representative of paper plane is three-dimensional horizontal plane, the flow direction of flue gas is along paper From top to bottom, the gas being blown into light-emitting tube road 110 is divided into two flow directions, is represented with single arrow and double-head arrow respectively in face.Its Middle a part of gas sprays to dust flue gas by the first diaphragm opening 112, and purging wind direction and flue gas stream are to parallel.Another part Gas enters as in the connecting pipe of connection member, and this connecting pipe is communicated with light absorbs pipeline 120.So, gas can Enter in light absorbs pipeline 120, and then dust flue gas are sprayed to by the second diaphragm opening 123.

According to an embodiment, this dust investigating is typically employed in industry and flue operating mode, is suitably less than dew Granular material discharged measurement in the presence of point (cold smoke road condition) or water droplet.During use, first have under controlled conditions from flue Continuous drawing flue gas, the flue gas of extraction directly reaches heating vaporizer and is evaporated, and being allowed to temperature is higher than condensation point, effectively overcomes The impact problem to accuracy of detection for the water droplet.This dust investigating is used to measure the dense of dust granules thing in dry flue gas condition Degree, effectively increases the accuracy of detection of this dust investigating.

From the foregoing, it will be observed that photelectric receiver is arranged on outside light absorbs pipeline this utility model, effectively reduce temperature to light The impact of electric receptor.It is disposed at the remote location of optical transmitting set, received by setting lamp guide in light absorbs pipeline Scattered light can directly be transmitted in the photelectric receiver being attached thereto by scattered light, it is to avoid using the light of concave mirror and bending Fibre/quartz pushrod is by optical transport light echo emitter with caused light loss in the photelectric receiver held.Led by rational setting The angle of optical wand and diameter, both can guarantee that enough light receiving surfaces moreover it is possible to reduce the pollution of minute surface, and also can prevent from receiving Go out for no reason by transmission for light, improves light-conductive rate.Meanwhile, device can substantially be reduced after removing the design of concave mirror from contaminated general Rate, improves certainty of measurement.In addition, when carrying out optical fiber (quartz pushrod) cleaning it is not required that disassembling the whole air chamber of detection means Take out optical fiber (quartz pushrod), and only the lamp guide not having to bend need to be released from light absorbs pipeline and get final product hence it is evident that improve Engineering efficiency.

Fig. 4 a and Fig. 4 b shows the schematic diagram of the dust investigating according to another embodiment of this utility model, and it is right Dust investigating in Fig. 1 has been made to improve further, mainly adds folding aligner, for the pollution of detection means Situation, and data calibration is carried out to testing result according to levels of contamination.

Need the receiving terminal that scattered light is set rotatable in a kind of existing environmental pollution degree detection mode, when needs are carried out During pollution detection, the receiving terminal of scattered light is turned to the coaxillay aligned position with the incident light axis of optical transmitting set, and according to light The dough softening of the light that emitter is launched is determining pollution level, and then measurement parameter when dust concentration is detected is adjusted Whole.But this method is higher to the Structural Design Requirement of optical receiving end, generally all more complicated, and it is unfavorable for engineering in practice Operation.And when carrying out pollution detection and carrying out granule density detection, be required for adjusting the position of an optical receiving end, and light path Error always occurs after regulation.So, even if the sample measuring on the same day, because light path changes through multiple, also can produce all Multiple error, affects accuracy of measurement.

This utility model arranges folding correcting mechanism between optical transmitting set and dust air-flow and can achieve pollution inspection Survey, the known signal value under the value having under pollutional condition being obtained according to detection and non-contaminated state, you can judge current dirt Dye degree, and parametric calibration is carried out according to dustiness, very easy to use.Wherein it is possible to this foldable correcting mechanism is arranged on In light-emitting tube road 110, certainly, if the gap of flue measured zone sufficiently large it is also possible to this foldable correcting mechanism setting Between the first baffle and flue in light-emitting tube road.

As shown in figure 4, this foldable correcting mechanism is arranged in light-emitting tube road 110, including push rod 115, lens 116, Lens mount 117, elastomeric element 118 and support 119.The middle part of lens mount 117 is hinged with support 119, and its first end is arranged There are lens 116, between the second end and support, be connected with elastomeric element 118.Push rod 115 is suitable to when stretching out promote lens mount 117 the second end rotates, so that the lens of first end 116 are away from the input path of optical transmitting set.Elastomeric element 118 is suitable to pushing away When bar 115 withdraws, the second end of drive lens bearing 117 rotates, so that the lens of first end 116 enter the incidence of optical transmitting set Light path.Support 119 is the fixed component of a similar l type, is suitable to be fixed on first baffle 112, during its horizontal axis is Between reeded slide rail, run back and forth for push rod 115, vertical direction be provided with baffle plate can as the baffle plate of lens mount 117, prevent Only lens mount 117 excessively rotates.The turning place of l type is also vacated completely, passes through for push rod 115 and lens mount 117.Its In, lens 116 can choose wedge-shaped lens, and elastomeric element 118 can select extension spring.It should be appreciated that elastomeric element 118 can select Select other devices or other link positions, all elastomeric elements enabling function in this utility model belong to this utility model Protection domain, this utility model is not restricted to this.Additionally, this foldable correcting mechanism can also be included for controlling push rod 115 motor drive mechanisms carrying out push-and-pull operation.

Further, can be arranged in the connecting pipe in light-emitting tube road 100 in this foldable correcting mechanism Portion, correcting mechanism closure state lower push-rod 115 and lens mount 117 are all located in connecting pipe.Above correcting mechanism Connecting pipe part needs to reserve opening, and Opening length is more than the long degree of lens mount 117 it is ensured that lens mount 117 is in rotation Process will not encounter connecting pipe.

Before carrying out dustiness detection, first suspend the blower fan driving flue gas stream, stop smoking gas.In detection pollution, As shown in fig. 4 a, push rod 115 retreats to the first precalculated position, and lens mount 117 rotates under the pulling force effect of elastomeric element 118 To position shown in figure, i.e. vertical position.I.e. in the input path of optical transmitting set.Measuring beam passes through the wedge of wedge-shaped lens 116 Shape shifts behind face, angle o with elementary beam path downward.Because test zone smokeless passes through, pass through wedge-shaped lens The light of refraction can be directly entered optical receiving end through test zone, now can carry out the inspection of dustiness according to the signal receiving Cls analysis.Here, the light beam after setting skew is needed just to incide in the end face of optical receiving end.

Specifically, suitable wedge-shaped lens angle can be selected according to the position of fixing lamp guide 130, make projection light The direction of line is that lamp guide direction is identical, such as adjusts position in input path for the foldable aligner, or selects suitable wedge The lozenges angle of shape lens, or suitably adjust the angle at lens end, when fully opening as pre-set lens mount Position；According to the wedge-shaped lens chosen, can also suitably adjust the angle of lamp guide 130, make transmitted light beam just incident To in the end face of lamp guide 130 receiving light.Ensure that lamp guide 130 is located across on the light beam after lens reflect in a word, this Utility model is without limitation.

Light beam reaches photelectric receiver 140 through lamp guide 130, and the light intensity signal according to receiving can carry out follow-up meter Point counting is analysed, and obtains the situation of device pollution.Specifically, it was known that the light intensity signal obtaining in the case of device is free of contamination is i₀, And when carrying out pollution detection, the light intensity signal obtaining is i₁, then the dustiness that can get now is ω=i₁/i₀, certainly, also may be used With the dustiness adding other specification COMPREHENSIVE CALCULATING to obtain now, this utility model is not restricted to the computational algorithm of dustiness.

Different according to pollution level, different process strategies can be set: when dustiness ω is low, be such as not less than 70% When, Concentration Testing can be proceeded, now need correction parameter when granule density detection is set, will actually measured arrive Value when optical signal value a is corrected to uncontaminated.For example, by the signal value recording a divided by dustiness, it is, of course, also possible to according to it He arranges more accurate bearing calibration at method, and this utility model is not construed as limiting to the algorithm of correction.When dustiness is higher, such as reach During to 30%, then need to suspend the detection of dust concentration and carry out device cleaning；Or, when dustiness reaches alarm value, can There is police instruction.In practical operation, can whole dust detection cycle in, intermittent carry out dustiness detection With calibration, such as detect 7-8 time daily, and carry out adaptive parameter correction or device cleaning, to ensure to detect the granule obtaining The accuracy of concentration.

When pollution has checked, can continue to start smoking gas, and carry out normal particle concentration detection.As Fig. 4 b Shown, push rod 115 proceeds to the second precalculated position, and lens mount 117 rotates to shown in figure under the thrust of push rod 115 Position, i.e. horizontal level, simultaneously elastomeric element 118 strain, now foldable correcting mechanism is in conjunction closed state, and lens 116 are remote From the input path of optical transmitting set, measuring beam projects along former input path, enters the test zone that dust granules are located, can Complete normal dust detection process.

As can be seen that the receiving terminal that this utility model need not specially arrange scattered light is rotatable, without to original powder Dust detection device carries out larger change, only after addition as above foldable correcting mechanism, you can stably convenient The pollution condition of dust investigating is judged.Afterwards, pointedly parameter school can be carried out for different pollution condition Accurate or device cleaning is it is ensured that the accuracy of detection of dust granules.In addition, during detection pollution and when detecting granule density, only with adjusting Whole folder carries out switching action, does not produce any impact to original light path, simplifies traditional pollution detection structure, also avoids Situation is forbidden in measurement caused by continuous adjustment optical receiving end.In practical operation, pre-defined algorithm can be inputted in advance, then Directly carry out the parameter correction of concentration calculating process according to pollution level in detection process, thus more convenient realization Accurately measuring of dust concentration, improves whole measurement efficiency.

In description mentioned herein, illustrate a large amount of details.It is to be appreciated, however, that it is of the present utility model Embodiment can be put into practice in the case of not having these details.In some instances, known side is not been shown in detail Method, structure and technology, so as not to obscure the understanding of this description.

Similarly it will be appreciated that in order to simplify the disclosure and help understand one of each utility model aspect or many Individual, in the description to exemplary embodiment of the present utility model above, each feature of the present utility model is divided sometimes together Group is in single embodiment, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following meaning Figure: i.e. this utility model required for protection requires than the feature more features being expressly recited in each claim.More Exactly, as the following claims reflect, utility model aspect is less than single reality disclosed above Apply all features of example.Therefore, it then follows claims of specific embodiment are thus expressly incorporated in this specific embodiment, Wherein each claim itself is as separate embodiments of the present utility model.

Those skilled in the art should be understood module or unit or the group of the equipment in example disclosed herein Part can be arranged in equipment as depicted in this embodiment, or alternatively can be positioned at and the equipment in this example In different one or more equipment.Module in aforementioned exemplary can be combined as a module or be segmented into multiple in addition Submodule.

Those skilled in the art are appreciated that and the module in the equipment in embodiment can be carried out adaptively Change and they are arranged in one or more equipment different from this embodiment.Can be the module in embodiment or list Unit or assembly be combined into a module or unit or assembly, and can be divided in addition multiple submodule or subelement or Sub-component.In addition to such feature and/or at least some of process or unit exclude each other, can adopt any Combination is to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so disclosed Where method or all processes of equipment or unit are combined.Unless expressly stated otherwise, this specification (includes adjoint power Profit requires, summary and accompanying drawing) disclosed in each feature can carry out generation by the alternative features providing identical, equivalent or similar purpose Replace.

Although additionally, it will be appreciated by those of skill in the art that some embodiments described herein include other embodiments In included some features rather than further feature, but the combination of the feature of different embodiment means to be in this practicality newly Within the scope of type and form different embodiments.For example, in detail in the claims, embodiment required for protection is any One of can in any combination mode using.

Additionally, some heres in described embodiment be described as can be by the processor of computer system or by executing Method or the combination of method element that other devices of described function are implemented.Therefore, have for implementing methods described or method The processor of the necessary instruction of element forms the device for implementing the method or method element.Additionally, device embodiment This described element is the example of following device: this device is used for implementing by the element institute of the purpose in order to implement this utility model The function of execution.

As used in this, unless specifically stated so, come using ordinal number " first ", " second ", " the 3rd " etc. Description plain objects are merely representative of the different instances being related to similar object, and are not intended to imply that the object being so described must Must have the time upper, spatially, sequence aspect or given order in any other manner.

Although this utility model is described according to the embodiment of limited quantity, benefit from above description, this technology Skilled person understands, it can be envisaged that other embodiments in the range of this utility model thus describing.Additionally, It should be noted that used in this specification language primarily to the purpose of readable and teaching and select, rather than in order to Explain or limit theme of the present utility model and select.Therefore, without departing from the scope of the appended claims and spirit In the case of, many modifications and changes will be apparent from for those skilled in the art.For this The scope of utility model, the disclosure that this utility model is done is illustrative and not restrictive, scope of the present utility model It is defined by the appended claims.

Claims (10)

1. a kind of dust investigating of low transmission loss is it is characterised in that include optical transmitting set, light-emitting tube road, light absorbs Pipeline, lamp guide and photelectric receiver, wherein,

Described optical transmitting set is located at one end of described dust investigating, is suitable to transmit a light beam to described light-emitting tube road；

The one end in described light-emitting tube road is connected with described optical transmitting set, is provided with confession between the other end and described light absorbs pipeline The gap that dust flue gas pass through；

A part for described lamp guide is located in described light absorbs pipeline, and one end is suitable to the injection of receiving light transmitting pipeline, warp Light after exhaust gas dust scattering, and conducted to described photelectric receiver；

Described photelectric receiver is located at outside described light absorbs pipeline, radially connected with described lamp guide, is suitable to described lamp guide The optical signal that conduction comes is converted to the signal of telecommunication.

2. dust investigating as claimed in claim 1 is it is characterised in that also include governor circuit, with described opto-electronic receiver Device is connected by holding wire, is suitable to receive the described signal of telecommunication from described photelectric receiver, and calculates powder according to the described signal of telecommunication The concentration of dirt granule.

3. dust investigating as claimed in claim 2 is it is characterised in that described governor circuit includes amplifying circuit, a/d turns Parallel operation and microprocessor, wherein, described amplifying circuit is suitable to be amplified the described signal of telecommunication, described a/d transducer be suitable to by Signal after described amplification is converted to digital signal, and described microprocessor is suitable to be calculated described powder according to described digital signal The concentration of dirt granule.

4. dust investigating as claimed in claim 2 is it is characterised in that described governor circuit and light source emitter are packed In instrument case, described governor circuit includes optical transmitting set drive module, is suitable to drive described optical transmitting set transmitting light beam.

5. dust investigating as claimed in claim 1 is it is characterised in that a diameter of 6-15mm of described lamp guide, and described Incident beam setting in a certain angle, described angular range is [15 °, 20 °]；Wherein said lamp guide is quartz pushrod.

6. dust investigating as claimed in claim 1 it is characterised in that

In described light-emitting tube road, the one end near described light absorbs pipeline is provided with first baffle, and described first baffle is arranged There is the first diaphragm opening being suitable to that light beam passes through；

In described light absorbs pipeline, the one end near described light-emitting tube road is provided with second baffle；Arrange on described second baffle There is the second diaphragm opening being suitable to that light beam passes through.

7. dust investigating as claimed in claim 6 is it is characterised in that the side in described light-emitting tube road is provided with air blowing Mouthful, the gas being blown into described light-emitting tube road from described inflatable mouth, dust flue gas are sprayed to by described first diaphragm opening.

8. it is characterised in that also including connection member, one part is located at institute to dust investigating as claimed in claim 6 State in light-emitting tube road, another part is connected through described first baffle with described light absorbs pipeline.

9. dust investigating as claimed in claim 7 or 8 is it is characterised in that described connection member is connecting pipe, with institute State light-emitting tube road and light absorbs pipeline all communicates；The gas being blown into described light-emitting tube road from described inflatable mouth, also by Described connecting pipe enters in described light absorbs pipeline, and sprays to dust flue gas by described second diaphragm opening.

10. dust investigating as claimed in claim 1 is it is characterised in that deviate from light-emitting tube in described light absorbs pipeline The one end in road is provided with light absorber, is suitable to absorb incident beam.