CN101303178B - Pneumatic gas heating device and gas heating method - Google Patents
Pneumatic gas heating device and gas heating method Download PDFInfo
- Publication number
- CN101303178B CN101303178B CN2008100179317A CN200810017931A CN101303178B CN 101303178 B CN101303178 B CN 101303178B CN 2008100179317 A CN2008100179317 A CN 2008100179317A CN 200810017931 A CN200810017931 A CN 200810017931A CN 101303178 B CN101303178 B CN 101303178B
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- jet pipe
- gas
- pipe
- insulation layer
- nozzle
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Abstract
The invention discloses a pneumatic type gas heating device and a gas heating method. The heating device comprises a pipe which is connected by two sections of straight pipes in a manner of sealing; the inner wall of the pipe is provided with a thermal insulation layer and the joint part of the two sections of the straight pipes is provided with a support component which is connected with a nozzle arranged in the center of the inner cross section of the pipe; an annular channel shrinking along the forward direction gradually and expanding along the negative direction gradually is formed between the nozzle and the thermal insulation layer; the nozzle is internally provided with a cross section changeable flow channel. High speed compressed gas is sent from one end of the pipe at subsonic speed and divided into two strands when going through the nozzle; the middle strand enters the cross section changeable flow channel of the nozzle and the surrounding strand enters the annular channel shrinking along the forward direction gradually between the nozzle and the thermal insulation layer and speed difference of the two strands of flow is generated at the joint surface at the end of the nozzle; shear friction and disturbance take place and gas is heated and the heated gas flows out from the other end of the pipe. The gas heating device has the advantages of simple structure, low production cost, even heating, fast temperature rise, saving energy, being high efficient, clean and sanitary, etc.
Description
Technical field
The present invention relates to a kind of pneumatic type gas-heating apparatus and gas heating means.
Background technology
High-temperature gas is widely used in industry spot such as metallurgical steel-making industry.Conventional gas heating (as combustion gas, electric heating etc.) all is to utilize hot conduction, convection current, heat radiation that heat is at first passed to the gas of heater near surface, by heat convection the gas bulk temperature is raise again.Make gas integral body reach required temperature, need certain heat transfer time.When heating,, just need the rising external temperature, strengthen temperature gradient, thereby also increased heat loss for improving firing rate with temperature difference mode of heating.
And the pneumatic heating means of internal channel high-speed gas are that a part of kinetic energy of high-speed compressed air and pressure energy are converted into energy (heat energy) in it, so can reach even heating at short notice.And Compressed Gas is described as " the human second largest energy ", and as seen these heating means have the basis of extensive utilization.But the relevant report that this respect is not arranged at present.
Summary of the invention
The gas heating means that the purpose of this invention is to provide a kind of simple in structure, low cost of manufacture, homogeneous heating and heat up pneumatic type gas-heating apparatus rapidly and utilize this heater.
For reaching above purpose, the present invention takes following technical scheme to be achieved:
A kind of pneumatic type gas-heating apparatus, it is characterized in that, comprise the pipeline that is tightly connected mutually by two sections straight tubes, inner-walls of duct is provided with thermal insulation layer, described two sections straight tube junctions are provided with supporting member and connect a jet pipe that places kernel of section position in the pipeline, form the circular passage of a positive direction convergent, opposite direction flaring between this jet pipe and the pipe insulation layer; Be provided with the variable cross-section gas channel in this jet pipe.
In the such scheme, described variable cross-section gas channel is made up of a plurality of annular flaring passages and a plurality of annular tapered channels, and described annular flaring passage and annular tapered channels are along the jet pipe setting of radially being separated by.Annular flaring passage can be 2, and annular tapered channels can be 3.
A kind of gas heating means that adopt above device comprise the steps:
(1) at first thermal insulation layer is set at two sections straight tube inwalls, connect a jet pipe with a supporting member then, supporting member is placed between two sections straight tubes end face in opposite directions, end face seal in opposite directions with two sections straight tubes connects into pipeline again, and make jet pipe be fixed in kernel of section position in the pipeline by supporting member, form a positive direction convergent, the circular passage of flaring in the other direction between jet pipe and the pipe insulation layer; Be provided with the variable cross-section gas channel in the jet pipe;
(2) the high speed Compressed Gas is sent into subsonic speed by pipeline one end, when high velocity air is divided into two strands during by jet pipe, middle one enters the variable cross-section gas channel of jet pipe, one then enters in the circulating line of the positive direction convergent between jet pipe and the thermal insulation layer on every side, two strands of air-flows are converged at the jet pipe end produce speed difference on the face, shearing friction and disturbance take place and being heated, is heated gas and flows out from the other end of pipeline.
In the said method, the variable cross-section gas channel of described jet pipe can adopt a plurality of annular flaring passages and a plurality of annular tapered channels to form, described annular flaring passage and annular tapered channels are along the jet pipe setting of radially being separated by, one is divided into multiply when the centre of high velocity air during by jet pipe, converge on the face at the jet pipe end that to produce the multiply air velocity poor, make the multiply air-flow that converges that violent shearing friction and disturbance take place and be heated.
Pneumatic type gas-heating apparatus of the present invention and heating means, have the following advantages: firing rate is fast; Homogeneous heating; Efficient energy-saving; Sanitation and hygiene.In addition, heater is simple in structure, durable, not fragile, can be used widely in the industry spot that needs high-temperature gas.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to cutaway view.
Fig. 3 is the another kind of cross-sectional view of jet pipe among Fig. 1.
Fig. 1 is in Fig. 3: the 1-adpting flange; The 2-connecting bolt; The 3-seal washer; 4-adpting flange 5-supporting member; The 6-jet pipe; The 7-pipeline; The 8-thermal insulation layer; 9-variable cross-section gas channel; 10-tapered annular passage (positive direction); 11-annular flaring passage; 12-annular tapered channels.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1 and Figure 2, a kind of pneumatic type gas-heating apparatus, comprise the pipeline 7 that is tightly connected mutually by two sections straight tubes, inner-walls of duct is provided with thermal insulation layer 8, two sections straight tube junctions are provided with supporting member 5 and connect a jet pipe 6 that places kernel of section position in the pipeline 7, form the circular passage 10 of a positive direction convergent, opposite direction flaring between this jet pipe and the pipe insulation layer 8; Be provided with variable cross-section gas channel 9 in this jet pipe 6.The place of being tightly connected of two sections straight tubes adopts adpting flange 1,4, connecting bolt 2 and seal washer 3.The structure of supporting member 5 is one and has the radially flange of muscle between trisection that pipeline 7 can adopt steel pipe.
The high speed Compressed Gas enters pipeline 7 with subsonic speed v by left end, and air-flow is divided into 2 strands, and middle one enters the variable cross-section gas channel 9 of jet pipe 6, and this variable cross-section gas channel 9 is a flaring passage; One of edge then enters in the tapered annular path 10 between jet pipe 6 and the thermal insulation layer 8, the former is decelerated, and the latter is accelerated, so air-flow is just converging generation shearing friction and disturbance on the face B, thereby, realize the purpose of heated air with the interior energy (heat energy) that a part of pressure energy and the kinetic energy of gas is converted into gas; Gas has above identical effect as entering from right-hand member.Adopt the device of present embodiment, the temperature of gas heating can reach 14 degrees centigrade.
As shown in Figure 3, in order to improve the temperature of heated air, the present invention has carried out further improvement to the jet pipe among Fig. 16, and promptly the variable cross-section gas channel 9 of jet pipe 6 can be designed to be made of a plurality of annular flaring passages 11 and a plurality of annular tapered channels 12; Annular flaring passage and annular tapered channels are along the setting of radially being separated by of jet pipe 6; Annular flaring passage can be 2, and annular tapered channels can be 3.Like this, one can be divided into multiply when the centre of high velocity air during by jet pipe 6, converges at the jet pipe end that to produce the multiply air velocity on the face B poor, makes the multiply air-flow that converges that violent shearing friction and disturbance take place and has improved the temperature of gas heating.The jet pipe that adopts structure shown in Figure 3 can improve 10 degrees centigrade than the jet pipe gas heating-up temperature of Fig. 1 structure.
Claims (5)
1. pneumatic type gas-heating apparatus, it is characterized in that, comprise the pipeline that is tightly connected mutually by two sections straight tubes, inner-walls of duct is provided with thermal insulation layer, described two sections straight tube junctions are provided with supporting member and connect a jet pipe that places kernel of section position in the pipeline, form the circular passage of a positive direction convergent, opposite direction flaring between this jet pipe and the pipe insulation layer; Be provided with the variable cross-section gas channel in this jet pipe.
2. pneumatic type gas-heating apparatus as claimed in claim 1 is characterized in that, described variable cross-section gas channel is made up of a plurality of annular flaring passages and a plurality of annular tapered channels, and described annular flaring passage and annular tapered channels are along the jet pipe setting of radially being separated by.
3. pneumatic type gas-heating apparatus as claimed in claim 2 is characterized in that, described annular flaring passage is 2, and annular tapered channels can be 3.
4. gas heating means that adopt claim 1 pneumatic type gas-heating apparatus is characterized in that, comprise the steps:
(1) at first thermal insulation layer is set at two sections straight tube inwalls, connect a jet pipe with a supporting member then, supporting member is placed between two sections straight tubes end face in opposite directions, end face seal in opposite directions with two sections straight tubes connects into pipeline again, and make jet pipe be fixed in kernel of section position in the pipeline by supporting member, form a positive direction convergent, the circular passage of flaring in the other direction between jet pipe and the pipe insulation layer; Be provided with the variable cross-section gas channel in the jet pipe;
(2) the high speed Compressed Gas is sent into subsonic speed by pipeline one end, when high velocity air is divided into two strands during by jet pipe, middle one enters the variable cross-section gas channel of jet pipe, one then enters in the circulating line of the positive direction convergent between jet pipe and the thermal insulation layer on every side, two strands of air-flows are converged at the jet pipe end produce speed difference on the face, shearing friction and disturbance take place and being heated, is heated gas and flows out from the other end of pipeline.
5. as a kind of gas heating means that adopt claim 1 pneumatic type gas-heating apparatus as described in the claim 4, it is characterized in that, the variable cross-section gas channel of described jet pipe adopts a plurality of annular flaring passages and a plurality of annular tapered channels to form, described annular flaring passage and annular tapered channels are along the jet pipe setting of radially being separated by, one is divided into multiply when the centre of high velocity air during by jet pipe, converge on the face at the jet pipe end that to produce the multiply air velocity poor, make the multiply air-flow that converges that violent shearing friction and disturbance take place and be heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100179317A CN101303178B (en) | 2008-04-11 | 2008-04-11 | Pneumatic gas heating device and gas heating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100179317A CN101303178B (en) | 2008-04-11 | 2008-04-11 | Pneumatic gas heating device and gas heating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101303178A CN101303178A (en) | 2008-11-12 |
| CN101303178B true CN101303178B (en) | 2011-06-22 |
Family
ID=40113193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100179317A Expired - Fee Related CN101303178B (en) | 2008-04-11 | 2008-04-11 | Pneumatic gas heating device and gas heating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101303178B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102313392B (en) * | 2011-04-15 | 2012-12-26 | 林钧浩 | Pneumatic friction-heat-generation high-temperature air heater |
| CN103388898A (en) * | 2012-05-07 | 2013-11-13 | 李相德 | Efficient hot water generating device |
| CN103363699B (en) * | 2013-07-05 | 2015-01-21 | 西安交通大学 | Gas clashing type heating device and heating method |
| WO2022048095A1 (en) * | 2020-09-04 | 2022-03-10 | 李华玉 | Method of reducing and using heat transfer temperature difference in heat release process |
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2008
- 2008-04-11 CN CN2008100179317A patent/CN101303178B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101303178A (en) | 2008-11-12 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20150411 |
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