CN101476514B - Secondary explosion-proof reciprocating internal combustion engine crankcase respiration port - Google Patents
Secondary explosion-proof reciprocating internal combustion engine crankcase respiration port Download PDFInfo
- Publication number
- CN101476514B CN101476514B CN2009100101181A CN200910010118A CN101476514B CN 101476514 B CN101476514 B CN 101476514B CN 2009100101181 A CN2009100101181 A CN 2009100101181A CN 200910010118 A CN200910010118 A CN 200910010118A CN 101476514 B CN101476514 B CN 101476514B
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- spring
- crankcase
- combustion engine
- fixed block
- internal combustion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
The invention discloses a reciprocating internal combustion engine crankcase respiration port capable of preventing a secondary explosion. The respiration port comprises a vertical pipe-shaped support (1), a casing (2) which has upper and lower openings and is connected with the upper end of the pipe-shaped support (1), and a fixation rod (3) which is fixed in the through cavity of the pipe-shaped support (1) and the casing (2). An upper end fixture part (4), a lower end fixture part (5) and a spring (6) arranged between the upper end fixture part (4) and the lower end fixture part (5) are arranged on the fixation rod (3). The upper end of the spring (6) is connected with a valve plate (7) which has an area larger than the cross sectional area of the pipe-shaped support (1). When greater negative pressure is formed in the crankcase after the first explosion, the respiration port can be rapidly closed so as to prevent air (oxygen) from entering the crankcase, thereby preventing the fuel gas in the crankcase from combusting continuously till the open fire is extinguished, consequently preventing the secondary explosion or multiple explosions, and preventing greater life and property loss caused by the accident worsened by the secondary explosion.
Description
Technical field:
The present invention relates to a kind of structure of reciprocating internal combustion engine crankcase respiratory mouth, especially a kind of simple in structure, safe and reliable, reciprocating internal combustion engine crankcase respiratory mouth that can prevent secondary explosion.
Background technique:
In the reciprocating internal combustion engine working procedure, the high temperature and high pressure gas in the cylinder inevitably can be leaked in the crankcase, so crankcase must be provided with and the extraneous pneumostome that carries out gas exchange.During normal working, be the mist of oil of higher temperature (about 90 ℃) and the admixture of the combustion gas of scurrying in the crank case of internal combustion engine, exchange balance crankshaft case pressure through the pneumostome and the external world; And when contingency such as take place that piston head crackle or piston head are burnt; The gas of the high-temp combustion crankcase oil gas that will ignite in the cylinder; And then it is explosion caused; Inflammable gas in the crankcase rises suddenly because of blast causes volumetric expansion, pressure and temperature, can yearn for through pneumostome rapidly and draining, and prevents the structural damage of internal-combustion engine.But; Because can be after gas is drained in inner negative pressure and the vacuum of forming of crankcase; And existing crankcase respiratory mouth just utilizes internal-combustion engine and the extraneous interface that carries out gas exchange, so air outside can suck crankcase because of negative pressure, mixes the generation secondary explosion with naked light remaining in the crankcase with oil gas; Accident is further enlarged, strengthened life and property loss.
Summary of the invention:
The present invention is in order to solve the above-mentioned technical problem of existing in prior technology, and a kind of simple in structure, safe and reliable, reciprocating internal combustion engine crankcase respiratory mouth that can prevent secondary explosion is provided.
Technical solution of the present invention is: a kind of reciprocating internal combustion engine crankcase respiratory mouth that prevents secondary explosion; It is characterized in that: vertical tubular support 1 is arranged; Be connected to the housing 2 of upper and lower opening with tubular support 1 upper end; Cavity internal fixation at tubular support 1 and housing 2 has fixing rod 3; Upper end fixed block 4, lower end fixed block 5 arranged on the fixing rod 3 and placing the spring 6 between upper end fixed block 4 and the lower end fixed block 5, the upper end of spring 6 and area join greater than the valve plate 7 of tubular support 1 cross-section area.
Join with valve plate 7 after the upper end of said spring 6 and upper spring seat 8 join, the lower end of spring 6 and lower spring cup 9 join again.
Said fixing rod 3 is screw rods, and upper end fixed block 4, lower end fixed block 5 all are connected with screw flight, outside the fixing rod that is socketed with spring 63, also is socketed with spacer 10.
Be fixed with flange 11 in tubular support 1 upper end, tubular support 1 joins through flange 11 and housing 2.
The present invention both can guarantee normal working lower crankcase and extraneous gas exchange, balance crankshaft case pressure; The expanding gas of the explosion time that meets accident is discharged rapidly, prevent the structural damage of internal-combustion engine; Can also guarantee simultaneously when crankcase forms bigger negative pressure; Promptly close pneumostome; Blocking-up air (oxygen) gets into crankcase, and the combustion gas in the crankcase can't be burnt away, and extinguishes up to naked light; Avoid taking place secondary or repeatedly blast, prevent to cause bigger life and property loss because of secondary explosion causes accident to enlarge.
Description of drawings:
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment:
Below with accompanying drawings embodiment of the present invention.As shown in Figure 1: as to be useful on the vertical tubular support 1 that joins with crankcase; Tubular support 1 upper end joins through the housing 2 of fixed block 11 (flange) with upper and lower opening; The joint should be provided with Sealings such as pad; Cavity internal fixation at tubular support 1 and housing 2 has fixing rod 3, upper end fixed block 4, lower end fixed block 5 is being arranged on the fixing rod 3 and placing the spring 6 between upper end fixed block 4 and the lower end fixed block 5, and the upper end of spring 6 and area join greater than the valve plate 7 of tubular support 1 cross-section area.In order to make spring 6 working stabilities, the two ends up and down of spring 6 join with upper spring seat 8, lower spring cup 9 respectively, and spring 6 joins with valve plate 7 after joining with upper spring seat 8 again.Said fixing rod 3 can be a screw rod; Upper end fixed block 4, lower end fixed block 5 all are connected with screw flight; Lower end fixed block 5 joins through lacing wire 12 and cavity inwall; Below lower end fixed block 5, also be provided with screw, nut, packing ring etc., outside the fixing rod that is socketed with spring 63, also be socketed with spacer 10.
During use; The lower end of tubular support 1 is joined through flange and crankcase; Change the pretightening force of spring 6 through adjustment lower end fixed block 5 and following screw thereof, nut, packing ring etc.; Make valve plate 7 play up and down not in normal operation, avoid the wearing and tearing and the damage that produce because of play up and down with the vibrations of internal-combustion engine.During proper functioning, the combustion gas of crankcase exchanges balance crankshaft case pressure through pneumostome (cavity) with the external world; In case when blasting, the expanding gas in the crankcase flows out rapidly through pneumostome, can prevent the structural damage of internal-combustion engine; After gas was drained, inner negative pressure that forms of crankcase and vacuum and external atmospheric pressure effect all acted on the valve plate 7, and valve plate 7 overcomes spring force; Spring 6 is compressed, and valve plate 7 moves downward along spacer 10, with the applying of the open upper end of tubular support 1; Because the area of valve plate 7 is greater than the passage of closed pneumostome; Stop crankcase to suck a large amount of air, thereby the blocking-up burning prevent secondary explosion.
Claims (4)
1. reciprocating internal combustion engine crankcase respiratory mouth that can prevent secondary explosion; It is characterized in that: vertical tubular support (1) is arranged; With the housing (2) that is connected to upper and lower opening on the tubular support (1); Cavity internal fixation at tubular support (1) and housing (2) has fixing rod (3); Upper end fixed block (4), lower end fixed block (5) arranged on the fixing rod (3) and placing the spring (6) between upper end fixed block (4) and the lower end fixed block (5), lower end fixed block (5) joins through the cavity inwall of lacing wire (12) with tubular support (1), and the upper end of spring (6) and area join greater than the valve plate (7) of tubular support (1) cross-section area.
2. the reciprocating internal combustion engine crankcase respiratory mouth that prevents secondary explosion according to claim 1 is characterized in that: join with valve plate (7) after the upper end of said spring (6) and upper spring seat (8) join, the lower end of spring (6) and lower spring cup (9) join again.
3. the reciprocating internal combustion engine crankcase respiratory mouth that prevents secondary explosion according to claim 1 and 2; It is characterized in that: said fixing rod (3) is a screw rod; Upper end fixed block (4), lower end fixed block (5) all are connected with screw flight, outside the fixing rod that is socketed with spring (6) (3), also are socketed with spacer (10).
4. the reciprocating internal combustion engine crankcase respiratory mouth that prevents secondary explosion according to claim 3 is characterized in that: be fixed with flange (11) in tubular support (1) upper end, tubular support (1) joins through flange (11) and housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100101181A CN101476514B (en) | 2009-01-19 | 2009-01-19 | Secondary explosion-proof reciprocating internal combustion engine crankcase respiration port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100101181A CN101476514B (en) | 2009-01-19 | 2009-01-19 | Secondary explosion-proof reciprocating internal combustion engine crankcase respiration port |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101476514A CN101476514A (en) | 2009-07-08 |
| CN101476514B true CN101476514B (en) | 2012-05-09 |
Family
ID=40837281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100101181A Expired - Fee Related CN101476514B (en) | 2009-01-19 | 2009-01-19 | Secondary explosion-proof reciprocating internal combustion engine crankcase respiration port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101476514B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3645242A (en) * | 1971-03-31 | 1972-02-29 | Nissan Motor | Crankcase ventilation valve |
| US4905657A (en) * | 1988-08-29 | 1990-03-06 | Chrysler Motors Corporation | Emission control valve with gas flow shut-off |
| CN2068587U (en) * | 1990-06-20 | 1991-01-02 | 开封柴油机厂 | Oil-dropping dreathing apparatus |
| CN2096647U (en) * | 1991-07-18 | 1992-02-19 | 开封柴油机厂 | Self oil return respirator |
| CN2544106Y (en) * | 2002-05-31 | 2003-04-09 | 杜成俊 | Spring resetting type diesel inspirator |
-
2009
- 2009-01-19 CN CN2009100101181A patent/CN101476514B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3645242A (en) * | 1971-03-31 | 1972-02-29 | Nissan Motor | Crankcase ventilation valve |
| US4905657A (en) * | 1988-08-29 | 1990-03-06 | Chrysler Motors Corporation | Emission control valve with gas flow shut-off |
| CN2068587U (en) * | 1990-06-20 | 1991-01-02 | 开封柴油机厂 | Oil-dropping dreathing apparatus |
| CN2096647U (en) * | 1991-07-18 | 1992-02-19 | 开封柴油机厂 | Self oil return respirator |
| CN2544106Y (en) * | 2002-05-31 | 2003-04-09 | 杜成俊 | Spring resetting type diesel inspirator |
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| Publication number | Publication date |
|---|---|
| CN101476514A (en) | 2009-07-08 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20180119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |