CN105041426A - Closed venting system of crank case of gas fuel engine - Google Patents
Closed venting system of crank case of gas fuel engine Download PDFInfo
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- CN105041426A CN105041426A CN201510545195.2A CN201510545195A CN105041426A CN 105041426 A CN105041426 A CN 105041426A CN 201510545195 A CN201510545195 A CN 201510545195A CN 105041426 A CN105041426 A CN 105041426A
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- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a closed venting system of a crank case of a gas fuel engine. The closed venting system comprises an oil and gas preseparation device, an oil and gas separator, a plurality of one-way valves, a pressure sensor, a temperature sensor and an oil mist concentration detection sensor. A venting end opening of the crank case is sequentially connected with the first one-way valve and a first input end opening of the oil and gas separator. An oil return end opening of the oil and gas separator is connected with an oil return end opening of the crank case through the second one-way valve. A venting end opening of the oil and gas separator is communicated with a gas input end opening of a gas compressor of a turbocharger. A lubricant output end opening of a lubricant supply unit of the turbocharger is connected with a bearing lubricant input end opening of the turbocharger. A bearing lubricant output end opening of the turbocharger is connected with a bearing lubricant input end opening of the oil and gas preseparation device. The oil and gas preseparation device is connected with a second input end opening of the oil and gas separator through the third one-way valve. The closed venting system is high in integration level and compact in structure, and effective emission and recycling functions of oil and gas in the crank case are achieved.
Description
Technical field
The present invention relates to a kind of gaseous propellant engine, the gaseous propellant engine crankcase enclosed gas venting system that especially a kind of safety coefficient is high, belong to gaseous propellant engine manufacturing technology field.
Background technique
Along with the domestic and international requirement to all kinds of explosive motor energy-saving and emission-reduction is more and more higher, day by day come into one's own with the clean air power fuel that the inflammable gass such as rock gas, petroleum gas, ethane are fuel, but generally belong to hazardous gas as the combustion gas of engine power fuel, the security requirement of gaseous propellant engine to complete machine and running space is very high, such as, need to carry out Real-Time Monitoring to the pressure in gaseous propellant engine crankcase, temperature and oil mist concentration; Release to the oil gas in crankcase in good time and recycle, these functions need the gas venting system of the closed cycle gaseous propellant engine crankcase of a set of special setting to realize.
Summary of the invention
The object of this invention is to provide a kind of closed crankcase gas venting system be applicable to the inflammable gass such as rock gas, petroleum gas, the ethane gaseous propellant engine that is fuel or duel fuel engine, to meet operation and the security requirement of gaseous propellant engine.
The present invention is achieved by the following technical programs:
A kind of gaseous propellant engine crankcase enclosed gas venting system, comprise oil-gas pre-separation device, deaerator, several one-way valve, pressure transducer, temperature transducer and oil mist concentration acquisition sensor, crankcase port of breathing freely is connected with the first input end mouth of the first one-way valve, deaerator successively, deaerator oil return port is connected with crankcase oil return port by the second one-way valve, and deaerator port of breathing freely leads to the gas compressor gas entry ports of turbosupercharger; The lubricant oil output port of turbocharger lubricating oil feed unit is connected with the bearing oil input port of turbosupercharger, turbo-charger bearing lubricant oil output port is connected with oil-gas pre-separation device bearing oil input port, oil-gas pre-separation device port of breathing freely is connected with deaerator second input port by the 3rd one-way valve, and the bearing oil output port of oil-gas pre-separation device is connected with turbocharger lubricating oil feed unit; Pressure transducer, temperature transducer and oil mist concentration acquisition sensor are connected on crankcase respectively.
Object of the present invention can also be realized further by following technical measures.
Aforesaid gaseous propellant engine crankcase enclosed gas venting system, wherein said oil-gas pre-separation device comprises in closed housing and housing to be handed over up and down
wrongthe several piece baffle plate arranged, be respectively equipped with bearing oil input port and oil-gas pre-separation device on the upside of housing to breathe freely port, described bearing oil input port and oil-gas pre-separation device port of breathing freely lays respectively at the baffle plate both sides on top, and lower housing portion is provided with bearing oil input port.
Aforesaid gaseous propellant engine crankcase enclosed gas venting system, the gauge pressure range of wherein said pressure transducer is 5 ~ 10kpa, the temperature range of described temperature transducer is 40 DEG C ~ 125 DEG C, and the oil mist concentration range of described oil mist concentration acquisition sensor is 0 ~ 50mg/l.
The present invention is between the crankcase and turbosupercharger of gaseous propellant engine, compact structure, level of integration are high, deaerator and oil-gas pre-separation device to the oil gas of crankcase oil gas and turbosupercharger oil system by filter or after centrifugation or absorption, gas enters turbosupercharger, flow back to the oil sump oil of crankcase bottom through one-way valve after oil cooling coagulates, realize effectively releasing and recycling function of oil gas in crankcase, make gaseous propellant engine run safety and reliability.The oil gas parameter of the pressure transducer that crankcase is arranged respectively, temperature transducer and mistiness degree acquisition sensor energy Real-Time Monitoring crankcase, guarantees that gaseous propellant engine is transported
row peacecomplete reliable.
Advantage and disadvantage of the present invention, is undertaken the non-limitative illustration by preferred embodiment below
figureshowing and explain, these embodiments, is with reference to attached
figureonly provide as an example.
Accompanying drawing explanation
figure1 is system principle of the present invention
figure;
figure2 be oil-gas pre-separation device of the present invention structure letter
figure.
Embodiment
Below in conjunction with attached
figurethe invention will be further described with embodiment.
As
figureshown in 1, the present invention includes oil-gas pre-separation device 1, deaerator 2, several one-way valve, pressure transducer 3, temperature transducer 4 and oil mist concentration acquisition sensor 5, crankcase port 61 of breathing freely is connected with the first one-way valve 71, deaerator first input end mouth 21 successively, deaerator oil return port 22 is connected with crankcase oil return port 62 by the second one-way valve 72, and deaerator port 23 of breathing freely leads to the gas compressor gas entry ports 81 of turbosupercharger 8; The lubricant oil output port 91 of turbocharger lubricating oil feed unit 9 is connected with turbo-charger bearing lubricant oil input port 82, turbo-charger bearing lubricating oil output port 83 is connected with the bearing oil input port 11 of oil-gas pre-separation device 1, oil-gas pre-separation device port one 2 of breathing freely is connected with deaerator second input port 24 by the 3rd one-way valve 73, and the bearing oil output port 13 of oil-gas pre-separation device 1 is connected with turbocharger lubricating oil feed unit 9.The effect of the second one-way valve 72 prevents the oil gas in crankcase 6 from scurrying in deaerator 2, and the first one-way valve 71 and the effect of the 3rd one-way valve 73 prevent oil gas and turbosupercharger 8 cartridge housing oil gas in crankcase 6 from altering mutually.The effect of oil-gas pre-separation device 1 is the gas mixed in the lubricant oil operation of initial gross separation turbosupercharger 8 in oil return process, utilize the principle of gravitational settling to carry out preliminary Oil-gas Separation, its structural type comprises centrifugal, the form such as adsorption type, filter net type, can according to different demand reasonable selection, to reach the object of lubricating oil and gas in separation oil and gas.
In order to the oil gas parameter in Real-Time Monitoring crankcase 6, crankcase 6 is provided with pressure transducer 3, temperature transducer 4 and oil mist concentration acquisition sensor 5 respectively, wherein, the range of pressure transducer 3 is 5 ~ 10kpa, the range of temperature transducer 4 is 40 DEG C ~ 125 DEG C, the range of oil mist concentration acquisition sensor 5 is 0 ~ 50mg/l, guarantees that gaseous propellant engine is transported
row peacecomplete reliable.Wherein, oil mist concentration acquisition sensor 5 is in order to detect the gas concentration in crankcase 6, and as found, concentration over-standard situation then needs to safeguard deaerator or change.
As
figureshown in 2, oil-gas pre-separation device 1 adopts the principle of gravity settling separation oil gas, comprises 2 pieces of baffle plates 101 in closed housing 10 and housing 10, and wherein, one piece of baffle plate 101 is fixed in housing 10 top, it has air hole 102, is convenient to breathe freely.Another block baffle plate 101 is fixed in housing 10 bottom, and two pieces of baffle plates about 101 are handed over
wrongarrange.In the present embodiment, be provided with bearing oil input port 11 on the right side of the baffle plate 101 on top, left side is provided with oil-gas pre-separation device and breathes freely port one 2, and housing 10 bottom is provided with bearing oil output port 13.
Working procedure of the present invention is as follows:
(1) oil gas in crankcase 6 as
figurein 1, arrow direction enters deaerator 2 by crankcase port 61 of breathing freely, and by the filtration of deaerator 2 or centrifugation or absorption, flows back to the oil sump bottom crankcase 6 after being coagulated by the oil cooling in oil gas through the second one-way valve 72.
(2) because turbosupercharger 8 is the machinery that runs up, in its running, combustion gas is inevitably mixed through bearing sealed ring in lubricant oil, and then enters the lubricating oil system of gaseous propellant engine complete machine, there is certain potential safety hazard.The oil gas that lubricant oil is formed through turbo-charger bearing lubricating oil output port 83 and oil-gas pre-separation device 1 successively enters deaerator 2 again, after filtration or centrifugal or absorption oil cooling is coagulated after flow back to oil sump bottom crankcase 8 through the second one-way valve 72.
In addition to the implementation, the present invention can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.
Claims (5)
1. a gaseous propellant engine crankcase enclosed gas venting system, it is characterized in that: comprise oil-gas pre-separation device, deaerator, several one-way valve, pressure transducer, temperature transducer and oil mist concentration acquisition sensor, the ventilative port of crankcase is connected with the first one-way valve, deaerator first input end mouth successively, deaerator oil return port is connected with crankcase oil return port by the second one-way valve, and deaerator port of breathing freely leads to the gas compressor gas entry ports of turbosupercharger; The lubricant oil output port of turbocharger lubricating oil feed unit is connected with turbo-charger bearing lubricant oil input port, turbo-charger bearing lubricating oil output port is connected with the bearing oil input port of oil-gas pre-separation device, oil-gas pre-separation device port of breathing freely is connected with deaerator second input port by the 3rd one-way valve, and the bearing oil output port of oil-gas pre-separation device is connected with turbocharger lubricating oil feed unit; Pressure transducer, temperature transducer and oil mist concentration acquisition sensor are connected on crankcase respectively.
2. gaseous propellant engine crankcase enclosed gas venting system as claimed in claim 1, it is characterized in that: described oil-gas pre-separation device comprises the several piece baffle plate be crisscross arranged up and down in closed housing and housing, be respectively equipped with bearing oil input port and oil-gas pre-separation device on the upside of housing to breathe freely port, described bearing oil input port and oil-gas pre-separation device port of breathing freely lays respectively at the baffle plate both sides on top, and lower housing portion is provided with bearing oil input port.
3. gaseous propellant engine crankcase enclosed gas venting system as claimed in claim 1, is characterized in that: the gauge pressure range of described pressure transducer is 5 ~ 10kpa.
4. gaseous propellant engine crankcase enclosed gas venting system as claimed in claim 1, is characterized in that: the temperature range of described temperature transducer is 40 DEG C ~ 125 DEG C.
5. gaseous propellant engine crankcase enclosed gas venting system as claimed in claim 1, is characterized in that: the oil mist concentration range of described oil mist concentration acquisition sensor is 0 ~ 50mg/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510545195.2A CN105041426B (en) | 2015-08-31 | 2015-08-31 | Gaseous propellant engine crankcase enclosed gas venting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510545195.2A CN105041426B (en) | 2015-08-31 | 2015-08-31 | Gaseous propellant engine crankcase enclosed gas venting system |
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| Publication Number | Publication Date |
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| CN105041426A true CN105041426A (en) | 2015-11-11 |
| CN105041426B CN105041426B (en) | 2018-04-13 |
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| CN201510545195.2A Active CN105041426B (en) | 2015-08-31 | 2015-08-31 | Gaseous propellant engine crankcase enclosed gas venting system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606013A (en) * | 2021-08-20 | 2021-11-05 | 广西玉柴机器股份有限公司 | Oil-gas separation system of engine |
| CN115324728A (en) * | 2022-08-08 | 2022-11-11 | 浙江吉利控股集团有限公司 | Two-stroke engine |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606013A (en) * | 2021-08-20 | 2021-11-05 | 广西玉柴机器股份有限公司 | Oil-gas separation system of engine |
| CN115324728A (en) * | 2022-08-08 | 2022-11-11 | 浙江吉利控股集团有限公司 | Two-stroke engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105041426B (en) | 2018-04-13 |
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Address after: 212211 No. 402, Changjiang Road, Zhenjiang City, Jiangsu Province Patentee after: China Shipbuilding Power Zhenjiang Co.,Ltd. Address before: 402 Changjiang Road, Runzhou District, Zhenjiang City, Jiangsu Province Patentee before: CSSC MARINE POWER Co.,Ltd. |
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