CN102997268B - Anti-tempering powder supply device - Google Patents
Anti-tempering powder supply device Download PDFInfo
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- CN102997268B CN102997268B CN201210408547.6A CN201210408547A CN102997268B CN 102997268 B CN102997268 B CN 102997268B CN 201210408547 A CN201210408547 A CN 201210408547A CN 102997268 B CN102997268 B CN 102997268B
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- powder
- storage tank
- mass flow
- flow rate
- fireproof tempering
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Abstract
The invention provides an anti-tempering powder supply device. The device comprises a throttle orifice, a powder storage tank, a powder flow rate adjusting device and an anti-tempering device. The anti-tempering device in a Laval nozzle form is additionally arranged between the power storage tank and a combustion chamber, and a flow diameter of the tempering prevention device is adjusted, so that high acceleration is generated when powder passes through the anti-tempering device, the pressure at the front of the anti-tempering device is higher than that of the combustion chamber, and an anti-tempering effect is achieved; by adjusting the throttle orifice, the mass flow rate of introduced fluidizing gas is 10% of the required mass flow rate of supplied powder; and the flow area of the powder flow rate adjusting device is selected, and the mass flow rate of the fluidizing gas is combined to realize the required mass flow rate of the supplied power.
Description
Technical field
The present invention relates to a kind of powder feeder unit, especially relate to a kind of anti-backfire powder feeding device for powder in high temperature and high pressure environment.
Background technology
In modern industry field, much production and experiment aspect all be unable to do without powder conveying technology.Machinery conveying and the large class of Geldart-D particle two is comprised for the equipment of powder delivery system in industrial production.Conveying worm, belt conveyor, bucket elevator, drag conveyor etc. all belong to mechanical transmission device, and such device fed distance is short, and conveying capacity is large, is mainly used in colliery, smeltery, power plant and Heat-Boilers.Geldart-D particle refers to swiftly flowing air and mixing of materials and the process transported.Because Geldart-D particle has the advantages such as structure is simple, technology arrangement is flexible, be widely used in the industrial circles such as electric power, pharmacy, food, cement, chemical industry, mining and metallurgy.Common Pneumatic conveyer loader comprises positive displacement loader, orbiting vane loader, auger feeder, venturi type loader and their combination.
The powder conveying equipment that current industrial circle uses is mainly used in normal pressure, normal temperature environment, there is the problem such as easy tempering, flow-control difficulty to the powder feeding of high temperature and high pressure environment.Relevant anti-backfire powder feeder unit has no report.
Summary of the invention
The technical problem solved
For solving prior art Problems existing, the present invention proposes a kind of anti-backfire powder feeding device, first its object is produce tempering when effectively can prevent conveying powder in high temperature and high pressure environment, is secondly the mass flowrate that can control powder.
Technical scheme
With reference to accompanying drawing 1, principle of the present invention is the fireproof tempering device by increasing Laval nozzle form between powder storage tank and combustion chamber, and regulate the circulation diameter of fireproof tempering device, make the pressure before fireproof tempering device be greater than the pressure of combustion chamber, thus play anti-backfire effect; Regulate powder mass flow adjusting device by arranging in powder storage tank rear end, powder quality flow rate is regulated.
Technical scheme of the present invention is:
Described a kind of anti-backfire powder feeding device, is characterized in that: comprise restricting orifice, powder storage tank, powder mass flow adjusting device and fireproof tempering device; Powder storage tank front end and admission line are tightly connected, and are installed with restricting orifice in admission line; Powder storage tank rear end is connected with powder converging portion flange seal, and is fixed with powder mass flow adjusting device between powder storage tank rear end and powder converging portion; The outlet of powder converging portion is tightly connected by fireproof tempering device and subsequent combustion room; Described restricting orifice, for regulating the fluidized gas mass flowrate passed into, makes the fluidized gas mass flowrate passed into be 10% of the confession powder powder quality flow rate of requirement; Described powder mass flow adjusting device is the plate profile structure having some bellmouths, and wherein the macropore of bellmouth is inner facing to powder storage tank; Described fireproof tempering device inside is the through hole of Laval nozzle form, and fireproof tempering device front end pressure is greater than the pressure of subsequent combustion room.
Described a kind of anti-backfire powder feeding device, is characterized in that: the bellmouth tapering in powder mass flow adjusting device is 15 °.
Beneficial effect
The present invention can realize high temperature and high pressure environment (1000K ~ 3500K, 0.1MPa-5MPa) carry out powder conveying, by arranging the inner fireproof tempering device for Laval nozzle, make powder by producing larger speedup during fireproof tempering device, fireproof tempering device front end pressure is greater than combustion chamber pressure, thus can prevent tempering; By regulating restricting orifice, the fluidized gas mass flowrate passed into is made to be 10% of the confession powder powder quality flow rate of requirement; By selecting the flow area of powder mass flow adjusting device, in conjunction with fluidized gas mass flowrate, what realize requirement supplies powder powder quality flow rate.
Accompanying drawing explanation
Fig. 1: anti-backfire powder-supply system schematic diagram;
Fig. 2: anti-backfire powder feeder unit structure chart in the present invention;
Fig. 3: powder mass flow adjusting device schematic diagram;
Fig. 4: powder mass flow adjusting device sectional view;
Fig. 5: fireproof tempering device schematic diagram;
Wherein: 1) restricting orifice, 2) suction nozzle, 3) powder storage tank drive end bearing bracket, 4) powder storage tank body, 5) powder mass flow adjusting device, 6) powder storage tank converging portion, 7) fireproof tempering device tube connector (entrance), 8) fireproof tempering device hold-down nut, 9) fireproof tempering device, 10) fireproof tempering device tube connector (outlet section).
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described:
The anti-backfire powder feeding device of the present embodiment is applied in novel powder rocket thrust-chamber firing, and what require in test carries out controlled adjustment for powder powder quality flow rate in the scope of 0.05 ~ 0.5kg/s.
Described anti-backfire powder feeding device comprises restricting orifice 1, powder storage tank, powder mass flow adjusting device 5 and fireproof tempering device 9.
Powder storage tank drive end bearing bracket 3 is welded with suction nozzle 2 in advance, and restricting orifice 1 is fixedly connected with suction nozzle 2 by flange, and powder storage tank drive end bearing bracket 3 is fixedly connected with powder storage tank body 4 by flange.Powder storage tank body rear end is connected by flange seal with powder storage tank converging portion 6, and is clamped by the adpting flange between powder storage tank body 4 and powder storage tank converging portion 6 in powder mass flow adjusting device 5 is stuck between powder storage tank converging portion 6 and powder storage tank body 4 draw-in groove.
Powder storage tank converging portion 6 is exported and is tightly connected by fireproof tempering device 9 and subsequent combustion room, and wherein fireproof tempering device hold-down nut 8 to be enclosed within advance on fireproof tempering device tube connector (entrance) 7 and to be threaded connection with the arrival end of fireproof tempering device 9; Fireproof tempering device tube connector (entrance) 7 and powder storage tank converging portion 6 pass through Flange joint, one end of anti-return device tube connector (outlet section) 10 is connected with the port of export of fireproof tempering device 9 by fireproof tempering device hold-down nut 8, and the other end is connected with the subsequent combustion room link of HTHP.
Described restricting orifice, for regulating the fluidized gas mass flowrate passed into, makes the fluidized gas mass flowrate passed into be 10% of the confession powder powder quality flow rate of requirement.
Described powder mass flow adjusting device as shown in Figure 3, these parts are fixed between powder storage tank body and powder storage tank converging portion, and for having the plate profile structure of 29 bellmouths, the tapering of bellmouth is 15 °, by adopting bellmouth technology, substantially increasing powder and passing through efficiency.During use, the macropore face of bellmouth is powdering inlet, and namely macropore is facing to powder storage tank body interior, and aperture face is dust outlet, and namely aperture is facing to powder storage tank converging portion.
As shown in Figure 5, this component outer is cylindrical to described fireproof tempering device, and inside is the Laval nozzle form through hole with convergence and divergence structure of dimensioned according to demand.On the pipeline that these parts can adopt the mode be threaded to be fixed between the outlet of powder storage tank converging portion and entry of combustion chamber.Its effect regulates the pressure before and after through hole to make powder by producing larger speedup during orifice plate, and fireproof tempering device front end pressure is greater than the pressure of subsequent combustion room thus prevents tempering.Use during assembling and will should sharply restrain end towards powder approach axis, divergent section is towards powder transport direction gradually.
Below the course of work of anti-backfire powder feeding device is introduced, as shown in Figure 2: first according to known method, powder quality flow rate as requested and fluidized gas mass flowrate (10 of powder quality flow rate), determine the flow area of powder mass flow adjusting device 5, secondly according to the pressure of Actual combustion room, according to known method, determine that fireproof tempering device 9 circulates diameter, guarantees that the pressure before fireproof tempering device 9 is greater than the pressure of combustion chamber.During the work of powder powder feeder unit, first restricting orifice 1 is regulated, make it reach fluidized gas flow design and require (10 of powder quality flow rate), under the rolling action of high pressure fluidized gas, in powder storage tank body 4, powder is by powder mass flow adjusting device 5, enter powder storage tank converging portion 6, by further rectification in converging portion, air-flow and powder is made evenly to enter fireproof tempering device 9, by fireproof tempering device 9, powder evenly enters combustion chamber, stable for powder object in the hyperbaric environment that reaches a high temperature.
Claims (2)
1. an anti-backfire powder feeding device, is characterized in that: comprise restricting orifice, powder storage tank, powder mass flow adjusting device and fireproof tempering device; Powder storage tank front end and admission line are tightly connected, and are installed with restricting orifice in admission line; Powder storage tank rear end is connected with powder converging portion flange seal, and is fixed with powder mass flow adjusting device between powder storage tank rear end and powder converging portion; The outlet of powder converging portion is tightly connected by fireproof tempering device and subsequent combustion room; Described restricting orifice, for regulating the fluidized gas mass flowrate passed into, makes the fluidized gas mass flowrate passed into be 10% of the confession powder powder quality flow rate of requirement; Described powder mass flow adjusting device is the plate profile structure having some bellmouths, and wherein the macropore of bellmouth is inner facing to powder storage tank; Described fireproof tempering device inside is the through hole of Laval nozzle form, and fireproof tempering device front end pressure is greater than the pressure of subsequent combustion room.
2. a kind of anti-backfire powder feeding device according to claim 1, is characterized in that: the bellmouth tapering in powder mass flow adjusting device is 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408547.6A CN102997268B (en) | 2012-10-24 | 2012-10-24 | Anti-tempering powder supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408547.6A CN102997268B (en) | 2012-10-24 | 2012-10-24 | Anti-tempering powder supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102997268A CN102997268A (en) | 2013-03-27 |
| CN102997268B true CN102997268B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210408547.6A Expired - Fee Related CN102997268B (en) | 2012-10-24 | 2012-10-24 | Anti-tempering powder supply device |
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| CN (1) | CN102997268B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894894B (en) * | 2018-06-05 | 2020-08-11 | 南京理工大学 | Powder fluidizing device easy to fill |
| CN109139293A (en) * | 2018-08-22 | 2019-01-04 | 南京理工大学 | A kind of powder engine powder dispersion device |
| CN109779743B (en) * | 2019-01-31 | 2020-05-26 | 西北工业大学 | Powder particle pneumatic filling method and system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6318087B2 (en) * | 1981-01-15 | 1988-04-16 | Nauchinoopuroizuodosutoennoe Obiedeinenie Ho Isusuredo* I Puroekuteirowaniiyu Enerugechichesukobo Oborudowaania Imeeni I I Horuzuno | |
| LU86311A1 (en) * | 1986-02-19 | |||
| CN2143757Y (en) * | 1993-02-09 | 1993-10-13 | 石家庄钢铁厂 | Coal-oxygen jet gun of intensified electric furnace metallurgy |
| CN1279314C (en) * | 2003-11-03 | 2006-10-11 | 华东理工大学 | Equipment and implementing method capable of regulation controlling and uniform distributing flux of powdered coal |
| CN201028575Y (en) * | 2007-01-05 | 2008-02-27 | 北京科技大学 | Low-pressure coal powder feeder with adjustable powder supply amount |
| CN202915391U (en) * | 2012-10-24 | 2013-05-01 | 西北工业大学 | Anti-backfire powder feeding device |
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- 2012-10-24 CN CN201210408547.6A patent/CN102997268B/en not_active Expired - Fee Related
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| CN102997268A (en) | 2013-03-27 |
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Granted publication date: 20150422 Termination date: 20161024 |