CN101240736B - Methanol pyrolyzer fuel nozzle cooling apparatus - Google Patents
Methanol pyrolyzer fuel nozzle cooling apparatus Download PDFInfo
- Publication number
- CN101240736B CN101240736B CN2008100524209A CN200810052420A CN101240736B CN 101240736 B CN101240736 B CN 101240736B CN 2008100524209 A CN2008100524209 A CN 2008100524209A CN 200810052420 A CN200810052420 A CN 200810052420A CN 101240736 B CN101240736 B CN 101240736B
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- China
- Prior art keywords
- nozzle
- carbinol
- fuel
- cooling cavity
- methanol
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Abstract
The present invention discloses carbinol cracking machine fuel nozzle refrigerating mechanism, and cooling cavity which is communicated with fuel conduit is equipped between nozzle of carbinol cracking machine and nozzle support saddle. Alcohol rail and nozzle are combined as integrated; carbinol fuel comes into alcohol rail and cooling cavity respectively. Pressure-limiting valve is equipped on fuel line between cooling cavity and methanol pump. Namely, cooling cavity and carbinol pump, pressure-limiting valve form concatenation closed circuit by fuel conduit, and connects with carbinol pump export in parallel type with nozzle and combined integrated by-pass road. Under function of fuel pump, one way enters into nozzle burning; another way enters into cooling cavity. Because carbinol vaporize hidden heat is big, and absorbs a great amount of heat in cooling cavity, and nozzle surfaced temperature rapidity drop to below 30EDG C, thereby aim of cooling nozzle is reached. The present invention uses carbinol as heat-eliminating medium executing nozzle-self cooling, is a simple structure; and feasibility applied on carbinol cracking machine can be realized.
Description
Technical field
The invention belongs to field of internal combustion engine, be specifically related to a kind of device that utilizes methanol fuel to cool off pyrolyzer fuel nozzle voluntarily.
Background technique
Earlier 1900s,, excited the research of people once more to the vehicle-mounted methanol cracking hydrogen production along with international oil price rises and the concern of people to atmosphere environment.Because methyl alcohol as clean alternative fuel, not only can be alleviated the anxiety of the energy, single from economic analysis, what motor use methyl alcohol will be good than use gasoline Economy is many.So numerous research institutions drop into the research to methanol pyrolyzer.Because it is to utilize the waste heat of engine exhaust to carry out that the alcohols catalytic pyrolysis is produced hydrogen, so the exhaust of motor is passed through in pyrolysis apparatus, the surface of pyrolysis apparatus suffers erosion because of withstand long term exposure high temperature (200-750 ℃).The material that is positioned at methyl alcohol nozzle on the pyrolysis apparatus is generally duroplasts.Place the easy heat damage of methyl alcohol nozzle on the Pintsch process device, even the work that has is less than just being burnt half an hour.As adopt metallic material to make, and because the keying of methyl alcohol nozzle is by Electromagnetic Control, so shell can not be a metal, and the also not anti-methyl alcohol corrosion of metallic material.This problem has seriously hindered the development of internal-combustion engine methanol decomposition hydrogen producing technology.
Summary of the invention
The purpose of this invention is to provide a kind of device that utilizes methanol fuel to cool off pyrolyzer fuel nozzle voluntarily.
Below in conjunction with accompanying drawing technological scheme of the present invention is illustrated.Methanol pyrolyzer fuel nozzle cooling apparatus has: methanol pyrolyzer 1, fuel conduit 2, methanol pump 3, pressure-limit valve 4, pure rail 5, nozzle 6, nozzle bearing 7 etc.Be provided with cooling chamber 8 between nozzle on the methanol pyrolyzer 16 and nozzle bearing 7, cooling chamber 8 communicates with fuel channel 2.Alcohol rail 5 is combined into one with nozzle 6.Methanol fuel enters pure rail 5 and cooling chamber 8 respectively through methanol pump 3.On the fuel conduit 2 between cooling chamber 8 and the methanol pump 3, be provided with pressure-limit valve 4.Be that cooling chamber 8 is connected in series the closed-loop path with methanol pump 3, pressure-limit valve 4 by the fuel conduit formation, the branch road that is combined into one with nozzle 6, pure rail 5 is connected to the methanol pump outlet.The effect of pressure-limit valve 4 be with pressure limit to certain adjustable stress level.
The working principle of pyrolyzer fuel nozzle cooling is: methanol fuel enters nozzle 6 on next road of effect of methanol pump 3 through pure rail 5 and carries out spray combustion; Another road enters the cooling chamber that places on the nozzle bearing, because the latent heat of vaporization of methyl alcohol very big (be gasoline 3.5 times), in cooling chamber, will absorb a large amount of heats, the temperature of methyl alcohol nozzle bearing inner nozzle hole surface is quickly fallen to below 30 ℃, thereby reach the purpose of cooling jet.
Description of drawings
Accompanying drawing is a systematic schematic diagram of the present invention.
Embodiment
Below by specific embodiment technological scheme of the present invention is further described.The rotating speed of present embodiment motor is 3000r/min, loads to be that 110Nm, the delivery temperature of motor are 700 ℃.Engine intake road injected petrol starts, and opens methanol pump 3, is lower than in delivery temperature under 320 ℃ the situation, and nozzle 6 is closed, and methanol liquid enters cooling chamber by fuel conduit, and nozzle is cooled off.After the startup, when delivery temperature was higher than 320 ℃, methanol pyrolyzer 1 was started working, nozzle 6 is opened, and it is combustion gas that a part of methanol liquid enters the pyrolysis apparatus internal conversion by the methyl alcohol nozzle, enters cylinder combustion, another part then enters cooling chamber 8, and nozzle is cooled off.Operation is after 4 hours continuously, and the situation of parking checking methyl alcohol nozzle: the methyl alcohol nozzle is excellent, no any sign that burns.By reliability and the life-span that the present invention has improved the methyl alcohol nozzle, reached the effect of anticipation.
The concrete parameter of test engine is as follows:
Engine parameter:
| MANUFACTURER | Nissan | Cylinder diameter * stroke (mm * mm) | 78×83.6 |
| Model | HR16DE | Compression ratio | 9.8 |
| Form | In-line four cylinder | Rated power/rotating speed (kW/r/min) | 80/6000 |
| Discharge capacity (L) | 1.598 | Maximum Torque/rotating speed (Nm/r/min) | 153/4400 |
Characteristics of the present invention and beneficial effect are embodied in, and utilize methyl alcohol to carry out the voluntarily cooling of nozzle for cooling medium, and be simple in structure; Can be implemented in the feasibility of using on the methanol pyrolyzer. Simultaneously proposition of the present invention will be conducive to the further promotion and application of producing hydrogen with remainder heat technology.
Claims (1)
1. methanol pyrolyzer fuel nozzle cooling apparatus, has methanol pyrolyzer (1), fuel channel (2), methanol pump (3), pressure-limit valve (4), alcohol rail (5), nozzle (6), nozzle bearing (7), it is characterized in that between nozzle (6) on the methanol pyrolyzer (1) and nozzle bearing (7), being provided with cooling chamber (8), cooling chamber (8) communicates with fuel conduit (2), alcohol rail (5) is combined into one with nozzle (6), methanol fuel enters pure rail (5) and cooling chamber (8) respectively through methanol pump (3), is provided with pressure-limit valve (4) at described cooling chamber (8) on the fuel conduit (2) that methanol pump (3) flows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100524209A CN101240736B (en) | 2008-03-12 | 2008-03-12 | Methanol pyrolyzer fuel nozzle cooling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100524209A CN101240736B (en) | 2008-03-12 | 2008-03-12 | Methanol pyrolyzer fuel nozzle cooling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101240736A CN101240736A (en) | 2008-08-13 |
| CN101240736B true CN101240736B (en) | 2011-04-27 |
Family
ID=39932508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100524209A Expired - Fee Related CN101240736B (en) | 2008-03-12 | 2008-03-12 | Methanol pyrolyzer fuel nozzle cooling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101240736B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007288159B2 (en) | 2006-08-24 | 2013-07-25 | Global Valve Technology Limited | Centreline flow valve |
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2008
- 2008-03-12 CN CN2008100524209A patent/CN101240736B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101240736A (en) | 2008-08-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20120312 |