CN106872489A - A kind of survey blocking method of use microwave Doppler detection principle, device and purposes - Google Patents
A kind of survey blocking method of use microwave Doppler detection principle, device and purposes Download PDFInfo
- Publication number
- CN106872489A CN106872489A CN201710088400.6A CN201710088400A CN106872489A CN 106872489 A CN106872489 A CN 106872489A CN 201710088400 A CN201710088400 A CN 201710088400A CN 106872489 A CN106872489 A CN 106872489A
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- microwave
- survey
- blocking method
- probe
- pipeline
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000000903 blocking effect Effects 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 63
- 239000011358 absorbing material Substances 0.000 claims abstract description 47
- 239000000523 sample Substances 0.000 claims abstract description 42
- 239000003245 coal Substances 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 10
- 239000007787 solid Substances 0.000 description 9
- 239000011343 solid material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Stifled technical field is surveyed the present invention relates to material conveying, and in particular to a kind of survey blocking method of use microwave Doppler detection principle, device and purposes.The survey blocking method that the present invention is provided is included in the microwave probe set by way of region of material conveying, and the microwave probe includes microwave emitter and microwave receiver, it is characterised in that：In the range of microwave probe microwave, all or part of wall that can be reached to microwave sets microwave absorbing material.The survey blocking method and survey block apparatus of present invention on-line monitoring material feed status can substantially or fully eliminate the interference of microwave reflection formation, so as to lift accuracy of measurement, greatly reduce the false alarm rate of line clogging situation, can be widely used in the conveying of chemical industry, steel or coal electricity industry material survey it is stifled in.
Description
Technical field
Stifled technical field is surveyed the present invention relates to material conveying, and in particular to a kind of use microwave Doppler detection principle
Survey blocking method, device and purposes.
Background technology
In the industrial productions such as chemical industry, steel, coal electricity, generally using strength by pipeline to reaction vessel or production reaction dress
Put and transport the solid matters such as graininess, the raw material or fuel of block or powdery, also often in the same way react production
The product that device is produced is transported to subsequent technique processing links.In the process, the solid material for often conveying is blocked up
Fill in the failure of pipeline.If being unable to the flow regime of solid matter in real-time monitoring pipeline, when pipeline is by tight blocking
Go to be dredged again afterwards, dredging difficulty, cost will acutely increase, and cause damp production, lose huge.
Accordingly, it would be desirable to a kind of reliable real time on-line monitoring means, send alarm, to open immediately at the line clogging initial stage
Dynamic pipe-dredging flow.So ensure that production is persistently carried out, it is to avoid economic loss caused by line clogging, damp production.
CN 101020934 discloses a kind of coal spraying pipeline and surveys blocking method, and it is surveyed by the temperature element on pipeline
Temperature in buret road, and control computer is input into through connection line, judge whether pipeline blocks.The survey blocking method needs to continue
Heating temperature element, and the temperature conditions of interference temperature element crossed by pulverized coal flow judge blockage, therefore there is power consumption
Many, coal dust temperature disturbs big problem to temperature element.The method is not preferably to survey blocking method, can not be generalized to other things
In expecting that the survey of conveying is stifled.
In contrast, material flowable state on-line monitoring technique is existing in the pipeline based on microwave Doppler detection principle
Most popular technology.The technology uses non-contact measurement mode.It installs one and is integrated with microwave in the STH of pipeline one
The microwave probe of transmitter and microwave receiver one.The continual transmitting microwave of the probe, and solids in receiving pipeline
The microwave signal that matter is reflected.When pipeline is not blocked, the continual flow forward of material in pipeline projects pipe
Microwave meeting occurrence frequency movement in road on solid matter, just produces microwave Doppler effect.According to this Doppler effect, root
According to the frequency departure of the microwave signal of the frequency and transmitting of the microwave signal for reflecting, it is possible to calculate solids in pipeline
The movement velocity of matter, after speed is less than certain experiences value, it is possible to judge to there occurs blockage in pipeline.
However, industrial pipeline generally uses metal material, there is strong reflex to microwave.When solids in pipeline
When the density of material is smaller, the microwave that transmitter sends would generally reach the opposite side wall of pipeline, and be reflected in opposite side wall,
Microwave after reflection reaches receiver or receiver, and being considered as by receiver mistake is reached after pipe side wall roundtrip
The microwave that tested solid matter is reflected is parsed, the interference source as a kind of influence measurement confidence level and precision, finally
Cause a kind of false alarm to line clogging situation.Therefore, the existing pipeline based on microwave Doppler effect surveys stifled instrument, by
In microwave signal by pipe side wall multiple reflections, interference source is formed, there is accuracy of measurement low and cause to line clogging shape
The problem of condition false alarm.
The content of the invention
The present invention provides a kind of survey blocking method of use microwave Doppler detection principle, be included in material conveying by way of area
The microwave probe that domain is set, the microwave probe includes microwave emitter and microwave receiver, it is characterised in that：In microwave probe
In the range of microwave, all or part of wall that can be reached to microwave sets microwave absorbing material.
The survey blocking method of present invention on-line monitoring material feed status can substantially or fully eliminate microwave reflection
The interference of formation, so as to lift accuracy of measurement, greatly reduces the false alarm rate of line clogging situation.
The invention further relates to use of the described survey blocking method in the survey that chemical industry, steel or coal electricity industry material are conveyed is stifled
On the way.
The invention further relates to the survey block apparatus that blocking method is set of surveying described in basis.
The invention further relates to use of the described survey block apparatus in the survey that chemical industry, steel or coal electricity industry material are conveyed is stifled
On the way.
The use of the construction unit that is set the invention further relates to described survey blocking method or device in the testing the speed of conveying material
On the way.
Brief description of the drawings
Fig. 1 is a kind of schematic cross-section for surveying block apparatus work of the present invention；
Fig. 2 is the structural representation that a kind of integral type of the invention surveys block apparatus.
Label therein represents following meanings：
1- sealing joint elements；
2- measurement windows；
3- integrated form microwave probes；
The microwave of 4- solid materials reflection；
The solid material that 5- is transported；
Microwaves of the 6- through solid material；
7- pipe side walls；
8- sealing shells；
9- microwave absorbing materials layer；
10- lining materials.
Specific embodiment
Below by way of specific embodiment, the present invention will be described in more detail.Material mentioned in it be it is commercially available can
Or obtainable material in accordance with known methods.
The present invention using microwave Doppler detection principle survey blocking method, be included in material conveying by way of region set
Microwave probe, the microwave probe includes microwave emitter and microwave receiver, it is characterised in that：In microwave probe microwave
In the range of, all or part of wall that can be reached to microwave sets microwave absorbing material.
Lifting microwave Doppler detection principle survey the accuracy of measurement of blocking method, eliminate block false alarm it is critical only that drop
Multiple reflections of the low or elimination metallic conduit side wall to microwave signal.The present invention by radiating in microwave probe in the range of,
Insides of pipes lays the mode of microwave absorbing material, sponges the microwave for projecting pipe side wall, reaches the part microwave
It is most or all of before the wall of metallic conduit side to be sponged by microwave absorbing material, without being reflected by metallic conduit side wall.
The microwave that the solid matter of conveying is reflected back in the microwave signal mostly pipeline that so microwave probe is received, is inspection
The signal for needing is surveyed, so as to be inherently eliminated the interference source of metal pipe-wall multiple reflections formation, and then it is accurate to improve measurement
Exactness, greatly reduces the false alarm rate of line clogging situation.
The microwave absorbing material (microwave absorbing material) is existing current material, is a kind of
Can absorb microwave, electromagnetic energy and reflect and scatter less material, also known as radar absorbing material (radar absorbing
) or Radar Stealth Materials (radar stealth material) material.Microwave absorbing material can be divided into coating by application
Type, patch-type and constitutional formula mlcrowaves absorbing material, interference-type and absorption-type microwave absorbing material can be divided into by operation principle.These
Microwave absorbing material can be applied in the present invention.The pipeline or equipment of particular type and administration according to microwave absorbing material
Structure, the microwave absorbing material can be set in the side wall of pipeline or equipment or side wall by the mode such as patch, coating, compound
On surface (including covering or do not cover the form of other materials again), or it is applied to through the above way on appropriate base material,
Then in device or construction unit containing the base material being incorporated into pipeline or equipment.
Wherein, " part " in " all or part of wall that microwave can be reached " and similar statement is preferably microwave spoke
Be mapped to the major part for reaching, or the larger part of density, or the stronger part of intensity, can microwave reflection and to test cause to do
Disturb or more strongly disturbing those parts wall.Those skilled in the art, can be according to measuring and calculating area when microwave absorbing material is laid
These regions are marked, and is determined to lay microwave absorbing material in much scopes according to the accuracy requirement of required microwave sounding.
Be embodied above-mentioned survey blocking method when, the microwave probe be mountable to material conveying by way of pipeline or equipment
Intraoral, microwave absorbing material can be located at the inwall of the pipeline or equipment mouthful；Or, after pipeline is blocked or equipment is punched,
The truncation part is replaced with the construction unit or device that are provided with microwave probe be provided with microwave absorbing material or fill up perforate.
In a specific embodiment, location is installed as the centre of sphere with microwave emitter, with microwave emitter
A diameter of radius of a ball R of pipeline or the equipment mouth residing for installing, applies to all or part of inwall in the range of 0-4R, preferably 0-3R
If microwave absorbing material.
In a specific embodiment, the liner material of protection microwave absorbing material is set outside microwave absorbing material
Material, the inner lining material is nonmetallic materials.Inner lining material can avoid microwave absorbing material from being connect with the direct of motion material in pipeline
Touch, microwave absorbing material can be protected not frayed and corroded.Inner lining material uses non-metallic material in itself, also will not or seldom produce
The microwave of raw reflection.
In a specific embodiment, the microwave probe is integrated form microwave probe.That is microwave emitter and micro-
Ripple receiver is integrated in one, and is easily installed and safeguards.
In a specific embodiment, the material is graininess, the material of block or powdery.
During the survey that survey blocking method of the present invention can be used on the conveying of chemical industry, steel or coal electricity industry material is blocked up.
The invention further relates to the survey block apparatus that blocking method is set of surveying described in basis, described survey can be used on of block apparatus
During the survey of work, steel or coal electricity industry material conveying is stifled.
The use of the construction unit that is set the invention further relates to described survey blocking method or device in the testing the speed of conveying material
On the way.Foundation microwave Doppler effect, the frequency departure of the microwave signal of frequency and transmitting according to the microwave signal for reflecting,
The movement velocity of solid matter in pipeline can be calculated.When the construction unit or device set according to the inventive method are for defeated
When sending in the device that material tests the speed, it is also possible to the interference of unwanted microwave reflection is eliminated or reduce, so as to obtain standard higher
Exactness.
According to the survey blocking method of above-mentioned use microwave Doppler detection principle, the present invention also provides a kind of how general using microwave
Strangle the survey block apparatus of detection principle.The survey block apparatus include probe unit and anti-tampering unit；The probe unit includes microwave
Probe, the microwave probe includes microwave emitter and microwave receiver；The anti-tampering unit sends to microwave probe
The microwave absorbing material layer that all or part of wall that microwave can be reached is set.
In a specific embodiment, the probe unit and anti-tampering unit located at material convey by way of pipeline
Or the inwall of equipment mouthful, constitute a part for the pipeline or equipment mouthful.
In a specific embodiment, the survey block apparatus also include cylinder, the probe unit and anti-tampering
Unit is in cylinder, wherein microwave absorbing material layer is located at the cylinder portion or the side wall of whole；The circle
The shape of cylinder and material convey by way of pipeline or the shape of equipment mouthful be adapted.
In a more particular embodiment, whole side walls of the cylinder are provided with the microwave absorbing material layer.
In a more particular embodiment, the height of the cylinder is 1-4 times of its internal diameter, preferably 1.5-3 times.
In a specific embodiment, the survey block apparatus also include for cylinder being attached to the pipeline or equipment
The sealing joint unit of mouth.For example, being attached sealing using bolt and pad or using flange.
In a specific embodiment, anti abrasive lining material is provided with microwave absorbing material layer,
The lining material is made up of nonmetallic materials.
In a specific embodiment, the microwave probe is integrated form microwave probe.
The integral type that the present invention also provides a kind of use microwave Doppler detection principle surveys block apparatus, including：Cylinder；If
In the microwave probe in cylinder, the microwave probe includes microwave emitter and microwave receiver；With microwave probe is sent
The microwave absorbing material layer that sets of all or part of cylinder wall that can reach of microwave.
In a specific embodiment, whole side walls of the cylinder are provided with the microwave absorbing material layer.
In a specific embodiment, the side wall of the cylinder includes the sealing shell that order is set outside in
8th, microwave absorbing material layer 9 and lining material 10, the lining material 10 are made up of nonmetallic materials.The sealing shell
8 can play a part of protection microwave absorbing material and strengthen whole cylinder mechanical performance, and can use includes that metal material exists
Interior existing material is constituted.
In a specific embodiment, it is described survey block apparatus also include by cylinder be attached to material conveying by way of
The sealing joint element 1 of pipeline or equipment mouthful.
In a specific embodiment, the microwave probe is integrated form microwave probe 3.
It is described further below in conjunction with accompanying drawing.
Fig. 1 shows a kind of specific schematic cross-section for surveying block apparatus work of the present invention.Wherein, integrated form microwave probe
The microwave that 3 microwave emitter sends reaches the solid material 5 transported in the pipeline, (letter of needs of microwave 4 of solid material reflection
Number) received by the microwave receiver of microwave probe 3, and then transmit and parse；Scattering or (such as quilt of microwave 6 through solid material
Measurement window is reflected back, interference source will be become) pipe side wall 7 is reached, the microwave absorbing material 9 for then being laid absorbs, from
And blocked interference of the microwave of pipe side wall reflection to signal.
Fig. 2 shows that a kind of integral type of the invention surveys the structural representation of block apparatus.The main body of the device is cylinder；Circle
Measurement window 2 on cylinder is provided with microwave probe 3, for launching and receiving microwave；The side wall of cylinder is sandwich structure,
It is made up of order is set outside in sealing shell 8, microwave absorbing material layer 9 and lining material 10.
In a specific embodiment, the survey block apparatus of the integral type when mounted, it is necessary to first pipeline is blocked, with
The above-mentioned cylinder for being laid with absorbing material substitutes original pipeline being truncated.Wherein, due to the solid material conveyed in pipeline
Ceaselessly rubbed in motion, wear and tear tube wall, if the solid material moved in microwave absorbing material layer directly contact pipeline, should
Microwave absorbing material layer will be worn quickly, therefore, one layer of anti abrasive lining material, the liner are increased thereon
Material layer uses nonmetallic materials, to avoid producing reflection to microwave.Meanwhile, it is outer in microwave absorbing material layer, increased one layer
Shell, absorbing material is sealed between liner and this shell, to protect absorbing material.So, liner, absorbing material and sealing
Shell forms " sandwich " structure.In addition, in order to ensure not producing leakage after replacing, being blocked and the cylinder in former pipeline
Interface can be attached sealing by the way of appropriate, such as joint seal of flanges, as shown in figure 1 above.
Technical scheme can be inherently eliminated microwave that microwave method line clogging measuring instrument sends in metal
The interference source that tube wall multiple reflections are formed, so as to lift the certainty of measurement of microwave method line clogging measuring instrument, greatly reduces pipe
The false alarm rate of road blockage.According to statistics, after the technical scheme is implemented, the false alarm of microwave method line clogging instrument
Rate is reduced to 0.5% from original 20%.
Finally illustrate, embodiments above is merely illustrative of the technical solution of the present invention and unrestricted.This area skill
Art personnel in the case of the objective and scope for not departing from technical solution of the present invention, the modification carried out to technical scheme
Or equivalent, all should cover in the scope of the claims in the present invention.
Claims (10)
1. a kind of survey blocking method of use microwave Doppler detection principle, is included in the microwave set by way of region of material conveying
Probe, the microwave probe includes microwave emitter and microwave receiver, it is characterised in that：In the model of microwave probe microwave
In enclosing, all or part of wall that can be reached to microwave sets microwave absorbing material.
2. survey blocking method according to claim 1, it is characterised in that：When the method is implemented, the microwave probe is installed
In material conveying by way of pipeline or equipment it is intraoral, inwall of the microwave absorbing material located at the pipeline or equipment mouthful；Or, will
After pipeline blocks or equipment is punched, replaced with the construction unit or device that are provided with microwave probe and be provided with microwave absorbing materials
The truncation part fills up perforate.
3. survey blocking method according to claim 1, it is characterised in that：Location is installed as ball with microwave emitter
The heart, with the residing pipeline of microwave emitter installation or a diameter of radius of a ball R of equipment mouthful, inside 0-4R, preferably 0-3R scopes
Divide or the inwall of whole lays microwave absorbing material.
4. the survey blocking method according to claim any one of 1-3, it is characterised in that：Protection is set outside microwave absorbing material
The inner lining material of microwave absorbing material, the inner lining material is nonmetallic materials.
5. the survey blocking method according to claim any one of 1-3, it is characterised in that：The microwave probe is integrated type micro-wave
Probe.
6. the survey blocking method according to claim any one of 1-3, it is characterised in that：The material be graininess, it is block or
The material of powdery.
7. the survey blocking method described in any one of claim 1-6 is in the survey that chemical industry, steel or coal electricity industry material are conveyed is stifled
Purposes.
8. the survey block apparatus that blocking method is set are surveyed according to claim any one of 1-6.
9. the purposes surveyed in blocking up that the survey block apparatus described in claim 8 are conveyed in chemical industry, steel or coal electricity industry material.
10. survey of the construction unit or device of surveying blocking method setting according to claim any one of 1-6 in conveying material
Purposes in speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710088400.6A CN106872489A (en) | 2017-02-19 | 2017-02-19 | A kind of survey blocking method of use microwave Doppler detection principle, device and purposes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710088400.6A CN106872489A (en) | 2017-02-19 | 2017-02-19 | A kind of survey blocking method of use microwave Doppler detection principle, device and purposes |
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| Publication Number | Publication Date |
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| CN106872489A true CN106872489A (en) | 2017-06-20 |
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| CN201710088400.6A Pending CN106872489A (en) | 2017-02-19 | 2017-02-19 | A kind of survey blocking method of use microwave Doppler detection principle, device and purposes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109969738A (en) * | 2019-03-18 | 2019-07-05 | 北京锐达仪表有限公司 | A kind of material detection device |
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| CN204064974U (en) * | 2014-09-26 | 2014-12-31 | 北京市科海龙华工业自动化仪器有限公司 | A kind of microwave stream material detector and smelting body of heater coal nozzle assurance device thereof |
| CN205176210U (en) * | 2015-12-03 | 2016-04-20 | 昆山国显光电有限公司 | Few sub - life -span testing arrangement of semi conducting material |
| CN106249213A (en) * | 2016-10-11 | 2016-12-21 | 中国民航大学 | A kind of indoor barrier reflection removal system for radar experiment porch |
-
2017
- 2017-02-19 CN CN201710088400.6A patent/CN106872489A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204064974U (en) * | 2014-09-26 | 2014-12-31 | 北京市科海龙华工业自动化仪器有限公司 | A kind of microwave stream material detector and smelting body of heater coal nozzle assurance device thereof |
| CN205176210U (en) * | 2015-12-03 | 2016-04-20 | 昆山国显光电有限公司 | Few sub - life -span testing arrangement of semi conducting material |
| CN106249213A (en) * | 2016-10-11 | 2016-12-21 | 中国民航大学 | A kind of indoor barrier reflection removal system for radar experiment porch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109969738A (en) * | 2019-03-18 | 2019-07-05 | 北京锐达仪表有限公司 | A kind of material detection device |
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