CN201463949U - Solid material flow online measurement device - Google Patents
Solid material flow online measurement device Download PDFInfo
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- CN201463949U CN201463949U CN2009201079636U CN200920107963U CN201463949U CN 201463949 U CN201463949 U CN 201463949U CN 2009201079636 U CN2009201079636 U CN 2009201079636U CN 200920107963 U CN200920107963 U CN 200920107963U CN 201463949 U CN201463949 U CN 201463949U
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Abstract
The utility model discloses a solid material flow online measurement device, which belongs to solid material flow online measurement technology. The measurement device is arranged at a position between a 1/3 position and a 2/3 position on a descending pipe; the position on the descending pipe provided with the measurement device is V-shaped; a measurement disc is arranged in the measurement device and is dead against an opening of the descending pipe connected with the upper end of the measurement device; the measurement disc and a support rod are connected and are in the same plane; the support rod is connected with a strain foil; the strain foil is arranged in a protecting device; the protecting device is fixed on a shell; a flow deflector is arranged at a lower part in the shell; and the lower part of the shell is provided with the opening connected with the descending pipe. The solid material flow online measurement device has simple, convenient and quick operation, converts an impact force into an electric signal, has accurate measurement and adopts a simple and convenient calibration method; a detection system is wholly arranged in a pipeline, so the measurement device is good in sealing property and materials do not escape out under the condition of positive pressure; and the measurement device is arranged at the middle part of the descending pipe and does not influence the flowing of grains in a lifting pipe.
Description
Technical field
The utility model belongs to the line Measurement Technique field of solid materiel flux, particularly a kind of device of on-line measurement of solid materiel flux.
Background technology
Recirculating fluidized bed is a kind of reaction unit commonly used, is widely used in industries such as the energy, oil, chemical industry, metallurgy.Circulation flow-rate is represented the unit interval in the recirculating fluidized bed, and the solid particle flow rate of unit area is one of important parameter of recirculating fluidized bed.On the one hand, the size of circulation flow-rate is to judge the important parameter of Gas-solid Two-phase Flow state in the burner hearth, has only under the enough big condition of circulation flow-rate, and the gas-solid in the burner hearth is flowed just can reach the state of fast fluidization; On the other hand, the size of circulation flow-rate influences the exchange capability of heat of external heat exchange bed in Circulating Fluidized Bed Boiler.Therefore the measurement of circulation flow-rate has great significance for the research of recirculating fluidized bed and operation more efficiently.
Existing circulation flow-rate measuring method has much on various recirculating fluidized bed experiment tablees at present, for the cold conditions experiment, more commonly adopts butterfly valve to measure.Concrete grammar is: butterfly valve is installed on the feed back leg of recirculating fluidized bed experiment table, in the process of system stable operation, closes butterfly valve suddenly, the solid particle that falls from separation vessel is deposited on the butterfly valve.By measuring the time computation cycles flow of particle packing to certain altitude.In addition, also there is below butterfly valve the LOAD CELLS of installation carry out on-line measurement.The advantage of butterfly valve is easy for installation, more easily realizes; But owing in the measuring process steady flow in the riser has been caused interference, so there is systematic error in measurement result.Also have a kind of impulse flow meter in addition, this device is suspended on an inversion V-type dish in the downtake of cold conditions CFB (recirculating fluidized bed) device, measures the acting force to coiling in the particle whereabouts.But this method is subject to its measurement range.
The patent No. 97104778.2 discloses a kind of measuring flow of solid material method and device, and this flowmeter utilizes strain-type force sensor directly to detect material impacts the vertical ground of the impulsive force produced on check-out console component and measures the solid particle flow.Because its detection dish and support column be on same surface level, the impulsive force of detection dish is decomposed, its measuring system sensitivity is lower, and existence is along the interference of support bar axial force to strain device.Simultaneously because its measuring system in the pipeline outside, is difficult to guarantee sealing.
Summary of the invention
At prior art measurement result accuracy difference and the lower deficiency of measuring system sensitivity, the utility model provides a kind of device of on-line measurement of solid materiel flux.
A kind of device of on-line measurement of solid materiel flux; it is characterized in that; this measurement mechanism 10 is installed on the downtake 1; be arranged on 1/3～2/3 position of downtake 1; it is V-shaped that downtake 1 installs and measures device 10 places; measuring disk 6 is set in the measurement mechanism 10; measuring disk 6 is over against the opening part of the downtake 1 that is connected with measurement mechanism 10 upper ends; measuring disk 6 links to each other with foil gauge 5 by support bar 3; and with support bar 3; foil gauge 5 is in same plane; foil gauge 5 is installed in the protective device 4; protective device 4 is fixed on the shell 2; the bottom is provided with fair water fin 7 in the shell 2, and shell 2 bottoms are provided with the opening that links to each other with downtake 1, and this measurement mechanism 10 links to each other with computing machine 14 by signal picker 11.
The beneficial effects of the utility model are: the utility model has the advantages that easy and simple to handle, quick; Impulsive force is converted into electric signal, measures accurately; Calibration steps is easy; Detection system is placed pipeline inside fully, good airproof performance, material can not overflowed under the condition of malleation; Be installed on the downtake, particle flow in the riser there is not influence. the circulation flow-rate that is specially adapted to small-sized circulating fluid bed reactor and recirculating fluidized bed experiment table is measured, be that a kind of precision is better, sensitivity is better, more stable solid flow metering device.
Description of drawings
Fig. 1 is the utility model and circulating fluidized bed system connection diagram;
Fig. 2 is a structural representation sketch of the present utility model;
Fig. 3 is the utility model calibration system synoptic diagram;
Number in the figure: 1-downtake; The 2-shell; The 3-support bar; The 4-protective device; The 5-foil gauge; 6-detection dish; The 7-fair water fin; The 8-riser; The 9-separation vessel; The 10-measurement mechanism; The 11-signal picker; The 12-fluidized wind; 13-returning charge wind; The 14-computing machine; The 15-screw feeder; The 16-pulling force sensor; The 17-bucket of weighing.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
A kind of device of on-line measurement of solid materiel flux; this measurement mechanism 10 is installed on the downtake 1; be arranged on 1/2 position of downtake 1; it is V-shaped that downtake 1 installs and measures device 10 places; measuring disk 6 is set in the measurement mechanism 10; measuring disk 6 is over against the opening part of the downtake 1 that is connected with measurement mechanism 10 upper ends; measuring disk 6 links to each other with foil gauge 5 by support bar 3; and with support bar 3; foil gauge 5 is in same plane; foil gauge 5 is installed in the protective device 4; protective device 4 is bolted on the shell 2 by double; the bottom is provided with fair water fin 7 in the shell 2; shell 2 bottoms are provided with the opening that links to each other with downtake 1, and this measurement mechanism 10 links to each other with computing machine 14 by signal picker 11.This device is made of working line, detection system and output; the detection system that is made of measuring disk 6, support bar 3, foil gauge 5, protective device 4 places measurement mechanism 10 inside fully; constitute working line by mozzle, detection system shell 2, fair water fin 7, signal picker 11 and computing machine 14 constitute output.
As shown in Figure 1, in circulating fluidized bed system, fluidized wind 12 enters riser 8 by air distribution plate, with the solid particle fluidisation, the gas-entrained solid enters separation vessel 9, realize gas solid separation, solid particle comes out to enter downtake 1 from separation vessel, measurement mechanism 10 is installed in 1/2 position of downtake 1, with separation vessel 9 outlets one segment distance is arranged, make particle flowing in downtake fully enter measurement mechanism after the development, also can make solid particle have sufficient space to form moving bed in downtake 1 bottom simultaneously, can't in time from measurement mechanism, discharge to avoid material.It is V-shaped that downtake 1 installs and measures device 10 places, the conduit of material by one section inclination enters measurement mechanism (conduit in vertical direction with angular region at 30～45 °), conduit inclination certain angle is avoided the bigger damage measuring system of falling speed on the one hand, play guide functions on the other hand, make solid particle concentrated relatively, increase measuring accuracy.The structure of measurement mechanism as shown in Figure 2, particle flows into measurement mechanism 10 from downtake 1, impact on the detection dish 6, the impulsive force that detection dish 6 is subjected to particle produces moment of flexure at support bar 3 places of Fig. 2, and foil gauge 5 resistance are changed, and can detect resistance by galvanometer and electric bridge and go out changes in resistance, and then obtain suffered impulsive force size, solid particle drops to fair water fin 7, flows into downtake 1 from fair water fin 7, makes it get back to riser 8 by returning charge wind 13 with grain fluidized.In the stable operation process, solid particle is separated from separation vessel and is entered downtake and flow downward, and drops on the detection dish, and the end portion supports place produces moment of flexure, measures the moment of flexure size by foil gauge, and then can extrapolate the size of solid flow rate.The ultimate principle of this method is: utilize strain-type force sensor (foil gauge) to measure solid material and impact the impulsive force that the produces component perpendicular to detection dish direction on the detection dish, thereby obtain the flow of the solid particle of unit interval.
Native system needed to calibrate before measuring, as shown in Figure 3. by screw feeder 15 feeds, make the solid flow rate keep constant. the following bucket 17 of weighing is suspended under the pulling force sensor 16, can write down the material rate of rise of bucket the inside, and then can obtain accurate solid particle flow rate. change screw feeder outlet and the distance that measuring system enters the mouth, can obtain the calibration curve under the different material height of drop.
Claims (1)
1. the device of the on-line measurement of a solid materiel flux; it is characterized in that; this measurement mechanism (10) is installed on the downtake (1); be arranged on 1/3～2/3 position of downtake (1); downtake (1) installs and measures device (10) and locates V-shaped; measuring disk (6) is set in the measurement mechanism (10); measuring disk (6) is over against the opening part of the downtake (1) that is connected with measurement mechanism (10) upper end; measuring disk (6) links to each other with foil gauge (5) by support bar (3); and with support bar (3); foil gauge (5) is in same plane; foil gauge (5) is installed in the protective device (4); protective device (4) is fixed on the shell (2); the interior bottom of shell (2) is provided with fair water fin (7), and shell (2) bottom is provided with the opening that links to each other with downtake (1), and this measurement mechanism (10) links to each other with computing machine (14) by signal picker (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201079636U CN201463949U (en) | 2009-05-08 | 2009-05-08 | Solid material flow online measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201079636U CN201463949U (en) | 2009-05-08 | 2009-05-08 | Solid material flow online measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201463949U true CN201463949U (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201079636U Expired - Lifetime CN201463949U (en) | 2009-05-08 | 2009-05-08 | Solid material flow online measurement device |
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| CN (1) | CN201463949U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778322A (en) * | 2012-07-12 | 2012-11-14 | 中国矿业大学 | Device and method for measuring stress of coal particle in concentrated phase gas-solid fluidized bed |
| CN104860038A (en) * | 2015-05-26 | 2015-08-26 | 中国矿业大学 | Coal mine belt-type conveying system falling coal impact energy buffer monitoring device and method |
| CN107389971A (en) * | 2017-07-20 | 2017-11-24 | 清华大学 | A kind of on-line measurement device of On Solids Recirculating Flowrate of Circulating Fluidized Bed |
| CN107702762A (en) * | 2017-09-04 | 2018-02-16 | 广东能达高等级公路维护有限公司 | The device and measuring method of analogue measurement bituminous mixing plant hot aggregate bin controlling level |
-
2009
- 2009-05-08 CN CN2009201079636U patent/CN201463949U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778322A (en) * | 2012-07-12 | 2012-11-14 | 中国矿业大学 | Device and method for measuring stress of coal particle in concentrated phase gas-solid fluidized bed |
| CN102778322B (en) * | 2012-07-12 | 2014-04-16 | 中国矿业大学 | Device and method for measuring stress of coal particle in concentrated phase gas-solid fluidized bed |
| CN104860038A (en) * | 2015-05-26 | 2015-08-26 | 中国矿业大学 | Coal mine belt-type conveying system falling coal impact energy buffer monitoring device and method |
| RU2667995C2 (en) * | 2015-05-26 | 2018-09-25 | Чайна Юниверсити Оф Майнинг Энд Текнолоджи | Device for monitoring and amortizing impact force of falling coal and method for band transport system in coal mine |
| CN107389971A (en) * | 2017-07-20 | 2017-11-24 | 清华大学 | A kind of on-line measurement device of On Solids Recirculating Flowrate of Circulating Fluidized Bed |
| CN107702762A (en) * | 2017-09-04 | 2018-02-16 | 广东能达高等级公路维护有限公司 | The device and measuring method of analogue measurement bituminous mixing plant hot aggregate bin controlling level |
| CN107702762B (en) * | 2017-09-04 | 2019-02-15 | 广东能达高等级公路维护有限公司 | The device and measurement method of analogue measurement bituminous mixing plant hot aggregate bin controlling level |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
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| CX01 | Expiry of patent term |