CN204679126U - A kind of flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle - Google Patents
A kind of flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle Download PDFInfo
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- CN204679126U CN204679126U CN201520213183.5U CN201520213183U CN204679126U CN 204679126 U CN204679126 U CN 204679126U CN 201520213183 U CN201520213183 U CN 201520213183U CN 204679126 U CN204679126 U CN 204679126U
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Abstract
The utility model relates to a kind of flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle, belongs to fluid measurement technical field.Sensor comprises outer shroud and multiple measuring unit, and multiple measuring unit is placed between two outer shrouds, and each measuring unit is made up of inner ring, measurement ring and inner ring, and inner ring, measurement ring and inner ring are arranged in order insulation and are fixed on pipe interior; Described measurement ring is made up of three arcuate sensor devices and three Needle type sensors, spaced between arcuate sensor device and Needle type sensors, and three arcuate sensor devices and three Needle type sensors are uniformly distributed along the circumference.The flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle that the utility model proposes, its advantage is: adopt the Trinitarian metering system of annulus, circular arc, probe to measure solid-gas flow, substantially increase measuring accuracy.
Description
Technical field
The utility model relates to a kind of flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle, belongs to fluid measurement technical field.
Background technology
The thermal power generation of current China accounts for 70% of total electric energy.Thermal power plant adopts multi-pipeline to enter coal.If from coal dust skewness in stove that each pipeline is blown into, burning will be caused insufficient, cause the wasting of resources, environmental pollution, also may cause boiler extinguishment or detonation.Present most of thermal power plant adopts the method rolling up denitration device investment and operating cost to realize environmental objective, but cures the symptoms, not the disease, and produces little effect.
Large-scale fire-electricity unit all adopts multi-pipeline to enter the mode of coal simultaneously, requires to improve boiler efficiency under low nitrogen oxygen combustion case.Boiler is active concussion system, if fuel coal dust and air skewness in stove, burning will be caused insufficient, thus produce the problem such as the wasting of resources, environmental pollution, and increase denitrification investment and operating cost, also may cause boiler extinguishment or detonation time serious.If go out one's intention as revealed in what one says powder to coal pulverizer to carry out leveling, can fundamentally address this problem.
Existing patent name is a kind of gas-solid diphasic stream parameter pick-up unit, and the patent No. is the patented claim of 201110331828.1, discloses a kind of device detecting solid-gas flow and measure.This device inserts two probes in the duct, and both as the detecting electrode of electrostatic correlation speed measurement, also as the vibrating mechanism of solid phase particles collision, this probe is after particles collision, and the resonance signal of generation is detected by the piezoelectric transducer being placed in pipeline external.This measurement device process is simple, and cost is low, installs simple, but owing to only having used two probes to collect data, result in measuring result error comparatively large, and external environment is larger on measurement result impact.
Summary of the invention
The purpose of this utility model is the flow speed measurement sensor proposing a kind of Dual-Phrase Distribution of Gas olid based on electrostatic induction principle, for the measurement of coal powder density and flow velocity in thermal power plant coal powder pipeline.
The flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle that the utility model proposes, comprise outer shroud and multiple measuring unit, multiple measuring unit is placed between two outer shrouds, each measuring unit is made up of inner ring, measurement ring and inner ring, and inner ring, measurement ring and inner ring are arranged in order insulation and are fixed on pipe interior; Described measurement ring is made up of three arcuate sensor devices and three Needle type sensors, spaced between arcuate sensor device and Needle type sensors, and three arcuate sensor devices and three Needle type sensors are uniformly distributed along the circumference.
The flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle that the utility model proposes, its advantage is: this sensor adopts the Trinitarian metering system of annulus, circular arc, probe to measure solid-gas flow, substantially increases measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle that the utility model proposes.
Fig. 2 is the structural representation measuring ring in sensor of the present utility model.
In Fig. 1 and Fig. 2,1 is pipeline, and 2 is outer shrouds, and 3 is inner ring, and 4 is measure ring, and 5 is arcuate sensor devices, and 6 is Needle type sensors.
Embodiment
The flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle that the utility model proposes, its structural representation as shown in Figure 1, comprises outer shroud 2 and multiple measuring unit.Multiple measuring unit is placed between two outer shrouds 2, and each measuring unit is made up of inner ring 3, measurement ring 4 and inner ring 3, and inner ring 3, measurement ring 4 and inner ring 3 are arranged in order the inside that insulation is fixed on pipeline 1.Measure ring 4 to be made up of three arcuate sensor devices 5 and three Needle type sensors 6, spaced between arcuate sensor device 5 and Needle type sensors 6, three arcuate sensor devices and three Needle type sensors are uniformly distributed along the circumference, as shown in Figure 2.
Below in conjunction with accompanying drawing, introduce principle of work and the course of work of this flow speed measurement sensor in detail:
First be fixed on the inwall of the pipeline 1 of gas-particle two-phase fluid process by the insulation of the measurement ring of this flow speed measurement sensor, fixing means can be inlay, and cementing agent also can be adopted to bond fixing, but must ensure to measure the insulation between ring and pipeline.
Direction as shown in Figure 1, when gas-particle two-phase fluid is through pipeline 1, because flowing in the duct makes fluid because of electrostatic friction with electric charge, note electric charge is Q, when this flow speed measurement sensor, by the electric field line point charge Q, end at the inwall sensitive surface of this flow speed measurement sensor, flow speed measurement sensor internal electron is caused to redistribute, the redistribution of electronics produces a dash current, the foreign current sensor (not shown) be connected with this sensor receives this dash current, through the conditioning amplifying circuit process of foreign current sensor, be converted into voltage signal and export.
When using this flow speed measurement sensor, first repeatedly test varying voltage signal during known different in flow rate, set up the corresponding relation between flow velocity and voltage.When measuring the gas-particle two-phase fluid of unknown flow velocity, can first measurement voltage signal, by the corresponding relation between the flow velocity set up and voltage, the anti-flow velocity releasing gas-particle two-phase fluid to be measured.
In an embodiment of the present utility model, have 8 rings in sensor, adjacent ring is at a distance of 40mm, and be respectively from the left side to centre: thickness is the outer shroud of 10mm, thickness is the inner ring of 6mm, and thickness is the measurement ring of 10mm.
According to measuring accuracy requirement, the measuring unit in sensor can arrange one or more, and measuring unit is more, and measuring accuracy is higher.
Claims (1)
1. the flow speed measurement sensor based on the Dual-Phrase Distribution of Gas olid of electrostatic induction principle, it is characterized in that this flow speed measurement sensor comprises outer shroud and multiple measuring unit, multiple measuring unit is placed between two outer shrouds, each measuring unit is made up of inner ring, measurement ring and inner ring, and inner ring, measurement ring and inner ring are arranged in order insulation and are fixed on pipe interior; Described measurement ring is made up of three arcuate sensor devices and three Needle type sensors, spaced between arcuate sensor device and Needle type sensors, and three arcuate sensor devices and three Needle type sensors are uniformly distributed along the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520213183.5U CN204679126U (en) | 2015-04-10 | 2015-04-10 | A kind of flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520213183.5U CN204679126U (en) | 2015-04-10 | 2015-04-10 | A kind of flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204679126U true CN204679126U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520213183.5U Expired - Fee Related CN204679126U (en) | 2015-04-10 | 2015-04-10 | A kind of flow speed measurement sensor of the Dual-Phrase Distribution of Gas olid based on electrostatic induction principle |
Country Status (1)
| Country | Link |
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| CN (1) | CN204679126U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464067A (en) * | 2017-09-08 | 2019-03-15 | 德国福维克控股公司 | Suction nozzle with battery unit for vacuum cleaning unit |
| CN109823838A (en) * | 2019-01-22 | 2019-05-31 | 太原市海通自动化技术有限公司 | A kind of method and device carrying out the tachometric survey of coal dust pneumatic conveying using novel electrostatic sensor |
| CN112303498A (en) * | 2020-10-19 | 2021-02-02 | 中石化上海工程有限公司 | Active static prevention and control system for non-metal pipeline and container |
-
2015
- 2015-04-10 CN CN201520213183.5U patent/CN204679126U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464067A (en) * | 2017-09-08 | 2019-03-15 | 德国福维克控股公司 | Suction nozzle with battery unit for vacuum cleaning unit |
| CN109464067B (en) * | 2017-09-08 | 2022-02-18 | 德国福维克控股公司 | Suction nozzle for a suction cleaning device |
| CN109823838A (en) * | 2019-01-22 | 2019-05-31 | 太原市海通自动化技术有限公司 | A kind of method and device carrying out the tachometric survey of coal dust pneumatic conveying using novel electrostatic sensor |
| CN112303498A (en) * | 2020-10-19 | 2021-02-02 | 中石化上海工程有限公司 | Active static prevention and control system for non-metal pipeline and container |
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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: 20150930 Termination date: 20160410 |