CN204694288U - A kind of gas-solid diphasic stream parameter measurement mechanism - Google Patents
A kind of gas-solid diphasic stream parameter measurement mechanism Download PDFInfo
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- CN204694288U CN204694288U CN201520284178.3U CN201520284178U CN204694288U CN 204694288 U CN204694288 U CN 204694288U CN 201520284178 U CN201520284178 U CN 201520284178U CN 204694288 U CN204694288 U CN 204694288U
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- static charge
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- charge sensor
- measurement mechanism
- parameter measurement
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Abstract
The utility model discloses a kind of gas-solid diphasic stream parameter measurement mechanism, for the solid phase speed of Dual-Phrase Distribution of Gas olid in measuring channel and the concentration of Dual-Phrase Distribution of Gas olid, comprise the upstream static charge sensor and downstream static charge sensor that be arranged in parallel, upstream static charge sensor is connected with amplifying circuit respectively by signal cable with downstream static charge sensor, amplifying circuit is connected with single-chip microcomputer, SD module and data processing module successively, single-chip microcomputer is connected with power module with SD module, and single-chip microcomputer is also connected with crystal oscillator.A kind of gas-solid diphasic stream parameter measurement mechanism of the utility model, structure is simple, cheap, is convenient to the advantage of installing and can more accurate reacting pipe endoparticle speed and corresponding concentration.Just solid metal probe and measuredly to contact with each other in actual applications, is subject to external interference little.Collide with sensor metal probe and dust the quantity of electric charge produced to change to measure dust flow velocity and concentration, overcome the problems such as blocking and distortion.
Description
Technical field
The utility model belongs to fluid measurement technical field, relates to a kind of gas-solid diphasic stream parameter measurement mechanism.
Background technology
In the large scale industry field production runes such as metallurgy, chemical industry, heat power station, usually need to carry out on-line real time monitoring to some parameters of Dual-Phrase Distribution of Gas olid.The solid phase speed of Dual-Phrase Distribution of Gas olid and the concentration of Dual-Phrase Distribution of Gas olid are wherein important parameters.
At present, for the measurement of solid speed, mainly contain the correlation speed measurement method based on monitoring principle such as electric capacity, electrostatic induction, gamma-rays.For the measurement of concentration, mainly contain the electrical method based on electric capacity, electrostatic induction principle, structure is simple, sensitivity high owing to having for electrostatic transducer, and in the measurement of solid phase particles speed, obtain increasing attention, wherein most popular is cross-correlation method.But the measuring method that electrostatic measurement method has not yet had in the mass flow measurement of two-phase flow, effectively can not measure other parameter of Dual-Phrase Distribution of Gas olid.
Utility model content
The purpose of this utility model is to provide a kind of gas-solid diphasic stream parameter measurement mechanism, and corresponding speed is fast, and real-time is good, can measure the solid phase speed of Dual-Phrase Distribution of Gas olid and the concentration of Dual-Phrase Distribution of Gas olid simultaneously.
The technical scheme that the utility model adopts is: a kind of gas-solid diphasic stream parameter measurement mechanism, for the solid phase speed of Dual-Phrase Distribution of Gas olid in measuring channel and the concentration of Dual-Phrase Distribution of Gas olid, comprise the upstream static charge sensor and downstream static charge sensor that be arranged in parallel, upstream static charge sensor is connected with amplifying circuit respectively by signal cable with downstream static charge sensor, amplifying circuit is connected with single-chip microcomputer, SD module and data processing module successively, single-chip microcomputer is connected with power module with SD module, and single-chip microcomputer is also connected with crystal oscillator.
Feature of the present utility model is also:
The structure of upstream static charge sensor and downstream static charge sensor is: comprise metal probe, described metal probe local insulated body parcel, insulator exterior is fixed with metal shell by screw thread, metal shell top is provided with ground terminal, one end signalization lead-out terminal of metal probe insulated body parcel.
Upstream static charge sensor and downstream static charge sensor vertical are installed on pipeline.
Single-chip microcomputer adopts MC9S12XS128.
The chip of amplifying circuit adopts PGA202 and PGA203, adopts cascade between described PGA202 and PGA203.
The diameter of metal probe is 7mm-9mm, and length is 5/1 to six/2nds of pipe diameter.
Distance between upstream static charge sensor and downstream static charge sensor is 15cm-25cm.
The beneficial effects of the utility model are: a kind of gas-solid diphasic stream parameter measurement mechanism of the utility model, and structure is simple, cheap, are convenient to the advantage of installing and can more accurate reacting pipe endoparticle speed and corresponding concentration.Just solid metal probe and measuredly to contact with each other in actual applications, is subject to external interference little.Collide with sensor metal probe and dust the quantity of electric charge produced to change to measure dust flow velocity and concentration, so there is not the problems such as blocking and distortion, there is the non-maintaining feature of permanent use.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of gas-solid diphasic stream parameter measurement mechanism of the utility model;
Fig. 2 is the structural representation of static charge sensor in a kind of gas-solid diphasic stream parameter measurement mechanism of the utility model;
Fig. 3 is that a kind of gas-solid diphasic stream parameter measurement mechanism of the utility model calculates electric charge in solid phase speed and voltage conversion circuit figure;
Fig. 4 is the circuit diagram that a kind of gas-solid diphasic stream parameter measurement mechanism of the utility model calculates amplifying circuit in solid phase speed.
In figure, 1. metal probe, 2. insulator, 3. screw thread, 4. metal shell, 5. ground terminal, 6. signal output terminal, 7. pipeline, 8. dust granules, 9. upstream static charge sensor, 10. downstream static charge sensor, 11. amplifying circuits, 12. signal cables, 13. single-chip microcomputers, 14. crystal oscillators, 15. power modules, 16.SD module, 17. data processing modules.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
A kind of gas-solid diphasic stream parameter measurement mechanism, as shown in Figure 1.Comprise the upstream static charge sensor 9 and downstream static charge sensor 10 that be arranged in parallel, upstream static charge sensor 9 is connected with amplifying circuit 11 respectively by signal cable 12 with downstream static charge sensor 10, amplifying circuit 11 is connected with single-chip microcomputer 13, SD module 16 and data processing module 17 successively, single-chip microcomputer 13 is connected with power module 15 with SD module 16, single-chip microcomputer 13 is also connected with crystal oscillator 14, and the distance between upstream static charge sensor 9 and downstream static charge sensor 10 is 15cm-25cm.
As shown in Figure 2, the structure of upstream static charge sensor 9 and downstream static charge sensor 10 is: comprise metal probe 1, metal probe 1 local insulated body 2 wraps up, insulator 2 outside is fixed with metal shell 4 by screw thread 3, metal shell 4 top is provided with ground terminal 5, one end of metal probe 1 insulated body 2 parcel is provided with signal output terminal 6, the diameter of metal probe 1 is 7mm-9mm, length is 5/1 to six/2nds of pipeline 7 diameter, and upstream static charge sensor 9 and downstream static charge sensor 10 are installed vertically on pipeline 7.
Principle of work of the present utility model is: when being with the air-flow of medium through upstream static charge sensor 9 and downstream static charge sensor 10, will form random charge signal.Through electric charge and voltage conversion circuit (as shown in Figure 3), utilize C=Q/U, charge signal is converted to voltage signal and reaches single-chip microcomputer 13 through amplifying circuit 11.Digital signal is changed into through A/D conversion at signal processing unit 13, cross-correlation mathematical model is utilized to obtain mistiming Δ t (s) of upstream static charge sensor 9 and downstream static charge sensor 10 by flush bonding processor again, distance between upstream static charge sensor 9 and downstream static charge sensor 10 is constant L, obtains speed V:V (m/s)=L (m)/Δ t (s).So just can calculate current air-flow velocity accurately.If record the sectional area of pipeline, access pulverized coal channel temperature, pressure just can record volumetric flow rate under the status of criterion and the concentration of wind powder.
In addition, because small-signal directly amplifies on a large scale, signal will drift about, and deviation ratio is comparatively large, so we just select the elementary amplifying circuit of OP07 chip design (as shown in Figure 4).Such design circuit has that input resistance is high, noise is low, good stability, precision and reliability are high, common mode resist than large, the linearity good, it is little to lack of proper care and have certain antijamming capability.Filtering circuit and subsequent amplification circuitry have been integrated into one piece.Selected amplification chip is PGA202 and PGA203, between them after cascade, just can carry out the amplification of 1-8000 times of different multiples as required to corresponding signal, and amplification range is wide, and convenient to operation, precision high level error is less.
A kind of gas-solid diphasic stream parameter measurement mechanism of the utility model, structure is simple, cheap, is convenient to the advantage of installing and can more accurate reacting pipe endoparticle speed and corresponding concentration.Just solid metal probe and measuredly to contact with each other in actual applications, is subject to external interference little.Collide with sensor metal probe and dust the quantity of electric charge produced to change to measure dust flow velocity and concentration, so there is not the problems such as blocking and distortion, there is the non-maintaining feature of permanent use.
Claims (7)
1. a gas-solid diphasic stream parameter measurement mechanism, for the solid phase speed of Dual-Phrase Distribution of Gas olid in measuring channel and the concentration of Dual-Phrase Distribution of Gas olid, it is characterized in that, comprise upstream static charge sensor (9) and downstream static charge sensor (10) that be arranged in parallel, described upstream static charge sensor (9) is connected with amplifying circuit (11) respectively by signal cable (12) with downstream static charge sensor (10), amplifying circuit (11) successively with single-chip microcomputer (13), SD module (16) and data processing module (17) connect, described single-chip microcomputer (13) is connected with power module (15) with SD module (16), described single-chip microcomputer (13) is also connected with crystal oscillator (14).
2. a kind of gas-solid diphasic stream parameter measurement mechanism according to claim 1, it is characterized in that, the structure in described upstream static charge sensor (9) and downstream static charge sensor (10) is: comprise metal probe (1), described metal probe (1) local insulated body (2) parcel, described insulator (2) outside is fixed with metal shell (4) by screw thread (3), metal shell (4) top is provided with ground terminal (5), one end that described metal probe (1) insulated body (2) is wrapped up is provided with signal output terminal (6).
3. a kind of gas-solid diphasic stream parameter measurement mechanism according to claim 1, is characterized in that, described upstream static charge sensor (9) and downstream static charge sensor (10) are installed vertically on pipeline (7).
4. a kind of gas-solid diphasic stream parameter measurement mechanism according to claim 1, is characterized in that, described single-chip microcomputer (13) adopts MC9S12XS128.
5. a kind of gas-solid diphasic stream parameter measurement mechanism according to claim 1, is characterized in that, the chip of described amplifying circuit (11) adopts PGA202 and PGA203, adopts cascade between described PGA202 and PGA203.
6. a kind of gas-solid diphasic stream parameter measurement mechanism according to claim 2, is characterized in that, the diameter of described metal probe (1) is 7mm-9mm.
7. a kind of gas-solid diphasic stream parameter measurement mechanism according to claim 1, is characterized in that, the distance between described upstream static charge sensor (9) and downstream static charge sensor (10) is 15cm-25cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520284178.3U CN204694288U (en) | 2015-05-05 | 2015-05-05 | A kind of gas-solid diphasic stream parameter measurement mechanism |
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| CN201520284178.3U CN204694288U (en) | 2015-05-05 | 2015-05-05 | A kind of gas-solid diphasic stream parameter measurement mechanism |
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| CN204694288U true CN204694288U (en) | 2015-10-07 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548607A (en) * | 2015-12-23 | 2016-05-04 | 东南大学 | Probe of measuring gas-solid two-phase flow particle slip velocity and measurement method |
| CN106124371A (en) * | 2016-08-03 | 2016-11-16 | 西安理工大学 | A kind of Dual-Phrase Distribution of Gas olid fineness measurement device based on electrostatic method and measuring method |
| CN107661070A (en) * | 2016-07-28 | 2018-02-06 | 九阳股份有限公司 | A kind of clean robot and clean method with dust detection function |
| CN107764351A (en) * | 2017-09-27 | 2018-03-06 | 西安理工大学 | Method based on electrostatic method real-time online measuring Dual-Phrase Distribution of Gas olid mass flow |
| CN108931664A (en) * | 2018-09-03 | 2018-12-04 | 南京科远自动化集团股份有限公司 | First air on-line parameter measuring system and measurement method |
| CN109187295A (en) * | 2018-09-03 | 2019-01-11 | 南京科远自动化集团股份有限公司 | First air on-line system for measuring the densities and measurement method |
-
2015
- 2015-05-05 CN CN201520284178.3U patent/CN204694288U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548607A (en) * | 2015-12-23 | 2016-05-04 | 东南大学 | Probe of measuring gas-solid two-phase flow particle slip velocity and measurement method |
| CN105548607B (en) * | 2015-12-23 | 2018-11-09 | 东南大学 | A kind of probe and measurement method measuring Gas-solid Two-phase Flow grain slide speed |
| CN107661070A (en) * | 2016-07-28 | 2018-02-06 | 九阳股份有限公司 | A kind of clean robot and clean method with dust detection function |
| CN106124371A (en) * | 2016-08-03 | 2016-11-16 | 西安理工大学 | A kind of Dual-Phrase Distribution of Gas olid fineness measurement device based on electrostatic method and measuring method |
| CN106124371B (en) * | 2016-08-03 | 2019-03-26 | 西安理工大学 | A kind of Dual-Phrase Distribution of Gas olid fineness measurement device and measurement method based on electrostatic method |
| CN107764351A (en) * | 2017-09-27 | 2018-03-06 | 西安理工大学 | Method based on electrostatic method real-time online measuring Dual-Phrase Distribution of Gas olid mass flow |
| CN108931664A (en) * | 2018-09-03 | 2018-12-04 | 南京科远自动化集团股份有限公司 | First air on-line parameter measuring system and measurement method |
| CN109187295A (en) * | 2018-09-03 | 2019-01-11 | 南京科远自动化集团股份有限公司 | First air on-line system for measuring the densities and measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180615 Address after: 710000 Shaanxi Xi'an high tech Zone Fenghui South Road candy SOHO fourth building 1 unit 16 floor 11605 room. Patentee after: Shaanxi Chang Hui Electric Power Equipment Co., Ltd. Address before: 710048 No. 5 Jinhua South Road, Shaanxi, Xi'an Patentee before: Xi'an University of Technology |
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| 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: 20151007 Termination date: 20210505 |