CN205156965U - Wind powder blending transportation medium concentration, online static measurement system of velocity of flow - Google Patents
Wind powder blending transportation medium concentration, online static measurement system of velocity of flow Download PDFInfo
- Publication number
- CN205156965U CN205156965U CN201520986712.5U CN201520986712U CN205156965U CN 205156965 U CN205156965 U CN 205156965U CN 201520986712 U CN201520986712 U CN 201520986712U CN 205156965 U CN205156965 U CN 205156965U
- Authority
- CN
- China
- Prior art keywords
- flow
- wind powder
- blending transportation
- measurement plate
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model relates to a powder flow measurement technical field, concretely relates to wind powder blending transportation medium concentration, online static measurement system of velocity of flow, it is including survey buret and survey the middle measurement board that sets up of buret, measuring the board and being provided with two, vertical parallel places, and the back is provided with the branch pipe, the branch pipe links to each other with survey buret inner wall, prop up the intraductal wire that is provided with, the wire meets with the measurement board to be connected to the ampere meter, the ampere meter links to each other with signal collector. The utility model discloses the utilization is provided with relieved measurement board cross -section and carries out data acquisition as detection area to the buggy inside the pipeline to the change of little electric current when measuring static and pass through through the ampere meter, and adopt signal collector to carry out the record, the real time monitoring of being convenient for, and it has convenient to use, easy operation, and the practicality is good, characteristics such as low cost.
Description
Technical field
The utility model relates to powder flowing field of measuring technique, is specifically related to concentration, the online electrostatic measuring system of flow velocity in a kind of wind powder blending transportation.
Background technology
In the outer large-scale thermal power machine group of Present Domestic, generally all adopt unit pulverized-coal system.During unit operation, hot blast carries the primary wind and powder that in coal pulverizer, coal dust is formed and leaves coal pulverizer, enters different conveyance conduits, and enters corresponding burner by these pipelines.Enter degree of uniformity that the wind speed of the First air of burner hearth, coal powder density and flow and each burner wind powder distribute all by the burning efficiency of the stability and boiler that directly affect stove combustion operating mode.The wind powder of each burner distributes inequality and can produce furnace flame deflection, local heat load is too high, in stove, reducing atmosphere is caused because coal powder density is too high in some region, exacerbate slagging scorification and high temperature corrosion process, and some burner can produce the even flame-out phenomenon of combustion pulsation and causes fluctuating widely of negative pressure in stove.In addition, between each burner, wind powder deviation strengthens, and causes the problem that unburned carbon loss increases, makes burner off-target working condition.With the increase of boiler capacity, number of burners increases, and the wind powder in powder process and combustion system distributes uneven problem can be more outstanding.Therefore measure power station powder process induction system coal powder density, mass rate is significant to the adjustment of wind powder ratio in the equilibrium assignment of each burner internal coal dust and burner.
Usually, in duff pipe, the mass concentration of coal dust is 300-500g/m3, and wind powder mass ratio is 1.5-3: 1, and volume ratio is only in the order of magnitude (when 100 DEG C) of 0.05%, powder content low like this, makes the coal dust such as radiation, electric capacity measuring method seem helpless.In the middle of power station, warehouse formula coal-fired boiler combustion device entrance coal powder density is measured and is often adopted heat balance method of, but for pulverized coal preparation system that is direct-firing or employing transporting pulverized coal with exhaust gas, there is not larger temperature difference owing to carrying gas and being transferred between powder, therefore heat balance method of also cannot be applied.
The electrostatic sensing technique grown up in recent years is based on gas-solid rolling particles charged detection particle flow parameter, has that system architecture is simple, noncontact, highly sensitive, cheap, safe and be suitable for the advantages such as severe industrial Geldart-D particle site environment.Although electrostatic transducer cannot provide granule density and the isoparametric absolute measured value of mass rate, from control and balanced angle, the relative measurement of concentration and flow is enough.This is that the factor such as composition, particle size, shape, water capacity as solid has similarity, and therefore in each pipeline, the output of electrostatic transducer has comparability because same coal pulverizer coal dust out has similar charging characteristic.At present, for the powder granule of given moist ingredients and particle size distribution, under dilute phase conditions, think that the effective value (RMS) that electrostatic transducer outputs signal is directly proportional to grain flux.But in fact, coal powder two-phase flow in pipeline due to piping arrangement, service condition etc., cause the distributing position of coal dust solid particle in pipeline different, the effective value (RMS) of the output signal that annulus electrostatic transducer detects also can be different, this produces comparatively big error by causing the characterization value of pulverized coal flow, and the coal dust Balance route of therefore powder process induction system can produce larger deviation.
Utility model content
The purpose of this utility model is defect for prior art and deficiency, provides a kind of structure simple, concentration, the online electrostatic measuring system of flow velocity in wind powder blending transportation reasonable in design, easy to use.
For achieving the above object, the technical solution adopted in the utility model is:
Concentration, the online electrostatic measuring system of flow velocity in a kind of wind powder blending transportation described in the utility model, comprise in the middle of measuring tube and measuring tube and measurement plate is set, described measurement plate is provided with two pieces, vertical parallel placement, the back side is provided with arm, and described arm is connected with measuring tube inwall, wire is provided with in described arm, described wire connects with measurement plate, and is connected to reometer, and described reometer is connected with signal collector.
Described measurement back is provided with insulcrete.
The parallel area of described measurement plate is 4 square centimeters, and the described measurement plate employing length of side is the square of 2 centimetres.
After adopting said structure, the utility model beneficial effect is: the utility model utilization is provided with relieved measurement plate cross section at pipe interior and carries out data acquisition as surveyed area to coal dust, and pass through the change of micro-electric current when reometer measurement of electrostatic is passed through, and adopt signal picker to carry out record, be convenient to real-time monitoring; What the utility model adopted is contactless or non-intervention type is measured, and therefore, the flow condition interference of convection cell is little, and electrostatic transducer measuring system can not affect the flow field of detected fluid, also can not cause the extra loss of manifold pressure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, concentration, the online electrostatic measuring system of flow velocity in a kind of wind powder blending transportation described in the utility model, comprise in the middle of measuring tube 1 and measuring tube 1 and arrange measurement plate 2, described measurement plate 2 is provided with two pieces, vertical parallel placement, the back side is provided with arm 3, described arm 3 is connected with measuring tube 1 inwall, is provided with wire 4 in described arm 3, and described wire 4 connects with measurement plate 2, and being connected to reometer 5, described reometer 5 is connected with signal collector 6.
Described measurement plate 2 back side is provided with insulcrete.
The parallel area of described measurement plate 2 is 4 square centimeters, and described measurement plate 2 adopts the length of side to be the square of 2 centimetres.
The utility model utilization is provided with relieved measurement plate cross section at pipe interior and carries out data acquisition as surveyed area to coal dust, and passes through the change of micro-electric current when reometer measurement of electrostatic is passed through, and adopts signal picker to carry out record, is convenient to real-time monitoring; What the utility model adopted is contactless or non-intervention type is measured, therefore, the flow condition interference of convection cell is little, and electrostatic transducer measuring system can not affect the flow field of detected fluid, also can not cause the extra loss of manifold pressure, and it has easy to use, simple to operate, the features such as practicality is good, with low cost.
The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.
Claims (3)
1. concentration, the online electrostatic measuring system of flow velocity in a wind powder blending transportation, it is characterized in that, it comprises measuring tube and measuring tube centre arranges measurement plate, and described measurement plate is provided with two pieces, vertical parallel placement, the back side is provided with arm, described arm is connected with measuring tube inwall, is provided with wire in described arm, and described wire connects with measurement plate, and being connected to reometer, described reometer is connected with signal collector.
2. concentration, the online electrostatic measuring system of flow velocity in a kind of wind powder blending transportation according to claim 1, is characterized in that: described measurement back is provided with insulcrete.
3. concentration, the online electrostatic measuring system of flow velocity in a kind of wind powder blending transportation according to claim 1, is characterized in that: the parallel area of described measurement plate is 4 square centimeters, and the described measurement plate employing length of side is the square of 2 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520986712.5U CN205156965U (en) | 2015-11-30 | 2015-11-30 | Wind powder blending transportation medium concentration, online static measurement system of velocity of flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520986712.5U CN205156965U (en) | 2015-11-30 | 2015-11-30 | Wind powder blending transportation medium concentration, online static measurement system of velocity of flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205156965U true CN205156965U (en) | 2016-04-13 |
Family
ID=55692648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520986712.5U Expired - Fee Related CN205156965U (en) | 2015-11-30 | 2015-11-30 | Wind powder blending transportation medium concentration, online static measurement system of velocity of flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205156965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197517A (en) * | 2016-07-07 | 2016-12-07 | 北京华电天仁电力控制技术有限公司 | A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration |
| CN109758030A (en) * | 2019-01-31 | 2019-05-17 | 莱克电气股份有限公司 | Cleaning robot control method, storage medium and cleaning robot |
-
2015
- 2015-11-30 CN CN201520986712.5U patent/CN205156965U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197517A (en) * | 2016-07-07 | 2016-12-07 | 北京华电天仁电力控制技术有限公司 | A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration |
| CN109758030A (en) * | 2019-01-31 | 2019-05-17 | 莱克电气股份有限公司 | Cleaning robot control method, storage medium and cleaning robot |
| CN109758030B (en) * | 2019-01-31 | 2022-02-18 | 莱克电气股份有限公司 | Cleaning robot control method, storage medium and cleaning robot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203981700U (en) | Dust through-current capacity pick-up unit | |
| CN104614024A (en) | Method and device for representing electrostatic measurement of coal powder flows of milling and conveying system of power plant | |
| CN103323273B (en) | A kind of method detecting power station boiler air pre-heater performance | |
| CN102095605B (en) | Double-regulation static pressure unbalanced coal dust constant-speed sampling system and method of system | |
| CN204789462U (en) | Buggy concentration and velocity of flow on line measurement system in one time tuber pipe is said | |
| CN205156965U (en) | Wind powder blending transportation medium concentration, online static measurement system of velocity of flow | |
| CN201828487U (en) | Dynamic performance testing device of filtering materials at high temperature | |
| CN105157774B (en) | A kind of pulverized coal flow on-line measurement device and measurement method | |
| CN106197517A (en) | A kind of Dual-Phrase Distribution of Gas olid simulating test device and relative concentration method of calibration | |
| CN103807852B (en) | The secondary-wind distributing device of pulverized-coal fired boiler and Secondary Air air distribution method | |
| CN205958413U (en) | Gas -solid two -phase flow simulating measurement setup | |
| CN110864855A (en) | Device and method for measuring air leakage rate of air preheater of power station boiler under medium and low loads | |
| CN2911458Y (en) | Secondary air on-line monitoring system for boiler of power station | |
| CN204495409U (en) | A kind of power station powder process induction system pulverized coal flow electrostatic measurement characterization apparatus | |
| CN210738891U (en) | Axial flow type induced draft fan performance test system for power station boiler | |
| CN201653862U (en) | Pulverized coal concentration on-line monitoring system of power plant boiler | |
| CN205065771U (en) | Directly blow high -efficient blast proof stove cigarette of formula coal pulverizer and mix fever device | |
| CN207539925U (en) | Station boiler secondary air register adjusts wind control system automatically | |
| Xu et al. | Electrostatic monitoring of coal velocity and mass flowrate at a power plant | |
| CN207147527U (en) | A kind of boiler coal-ash speed and concentration intelligent detection device | |
| CN206627145U (en) | A kind of gasification of biomass and coal-fired electric generation furnace coupled electricity-generation metering system for heat | |
| CN204924335U (en) | Buggy flow on line measurement device | |
| CN110631975B (en) | Primary air online concentration measurement method based on electrostatic method | |
| CN204830009U (en) | A device for measuring buggy concentration and wind speed in pulverized coal boiler pipeline | |
| CN107869729A (en) | Station boiler secondary air register adjusts air control system and method automatically |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20181130 |