CN202991229U - Two-stage boost exhaust system and engine with same - Google Patents

Two-stage boost exhaust system and engine with same Download PDF

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Publication number
CN202991229U
CN202991229U CN2012207279337U CN201220727933U CN202991229U CN 202991229 U CN202991229 U CN 202991229U CN 2012207279337 U CN2012207279337 U CN 2012207279337U CN 201220727933 U CN201220727933 U CN 201220727933U CN 202991229 U CN202991229 U CN 202991229U
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CN
China
Prior art keywords
pressure stage
high pressure
pressurized machine
water jacket
low pressure
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Expired - Lifetime
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CN2012207279337U
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Chinese (zh)
Inventor
侯晓良
张英
张小峰
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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Priority to CN2012207279337U priority Critical patent/CN202991229U/en
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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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Abstract

The utility model discloses a two-stage boost exhaust system. The two-stage boost exhaust system comprises an exhaust pipe connected with a cylinder cover exhaust port and an exhaust gas feed inlet of a high pressure stage booster, an exhaust gas outlet of the high pressure stage booster is communicated with an exhaust gas feed port of a low pressure stage booster, a fresh air outlet of the low pressure stage booster is communicated with a fresh air inlet of the high pressure stage booster, a fresh air outlet of the high pressure stage booster is connected with an engine through a pipe, the exhaust pipe is provided with an exhaust pipe water jacket, and a high pressure stage turbine case water jacket is arranged on a turbine case of the high pressure stage booster; and the exhaust pipe water jacket and the high pressure stage turbine case water jacket are communicated with an engine cooling waterway respectively. Cooling water which is fed into the exhaust pipe water jacket and the turbine case water jacket can well cool tail gas of the engine, therefore the surface temperature of the engine is reduced to a temperature at which staff can perform real-time maintenance, and the two-stage boost exhaust system is applicable to steamer machines and yacht machines. The utility model further provides the engine with the two-stage boost exhaust system.

Description

A kind of two-step supercharging vent systems and have its motor
Technical field
The utility model relates to a kind of two-step supercharging vent systems, particularly the two-step supercharging vent systems of a kind of suitable ship machine, the use of yacht machine.
Background technique
because needing motor, yacht machine project possesses larger power and low speed torque, show that according to Calculation results needs are equipped with the two-step supercharging vent systems to satisfy motor to flow and the pressure demand of air, present two-step supercharging vent systems comprises the outlet pipe that is connected with the cylinder head relief opening, outlet pipe is connected with the exhaust gas inlet of high pressure stage pressurized machine, the waste gas outlet of high pressure stage pressurized machine is communicated with the exhaust gas inlet of low pressure stage pressurized machine, the fresh air outlet of low pressure stage pressurized machine is communicated with the fresh air inlet of high pressure stage pressurized machine, the fresh air outlet of high pressure stage pressurized machine is connected with suction tude, suction tude is connected with the suction port of motor.But the Engine Surface temperature of existing use two-step supercharging system is higher, during work, the staff can't be close, can't carry out real-time servicing, maintenance, therefore, must control the surface temperature of outlet pipe and supercharger volute, make its surface temperature can reach the required temperature of real-time servicing.
Summary of the invention
It is lower that the technical problems to be solved in the utility model is to provide a kind of Engine Surface temperature that can make, and suitable staff carries out the ship machine that is applicable to of real-time servicing, the two-step supercharging vent systems of yacht machine.
For solving the problems of the technologies described above, the utility model comprises the outlet pipe that is connected with the cylinder head relief opening, outlet pipe is connected with the waste gas inlet of high pressure stage pressurized machine, the waste gas outlet of high pressure stage pressurized machine is communicated with the waste gas inlet of low pressure stage pressurized machine, the fresh air outlet of low pressure stage pressurized machine is communicated with the fresh air inlet of high pressure stage pressurized machine, the fresh air outlet of high pressure stage pressurized machine is connected with motor by pipeline, its structural feature is that described outlet pipe is provided with the outlet pipe water jacket, and the turbine case of high pressure stage pressurized machine is provided with high pressure stage turbine case water jacket; Described outlet pipe water jacket, high pressure stage turbine case water jacket are communicated with the engine cooling water route respectively.
After adopting said structure, be connected with cooling water in outlet pipe water jacket and turbine case water jacket, can well lower the temperature to the tail gas of motor, thereby the surface temperature that makes motor is down to the temperature that suitable staff can carry out real-time servicing, makes this two-step supercharging vent systems go for ship machine, yacht machine.
Also be provided with low pressure stage turbine case water jacket on the turbine case of described low pressure stage pressurized machine, low pressure stage turbine case water jacket is communicated with the engine cooling water route respectively, better to engine cooling, makes Engine Surface temperature staff preferably carry out real-time servicing, maintenance.
Described outlet pipe water jacket also is communicated with the swelling water tank of setting height(from bottom) higher than outlet pipe, and outlet valve is installed on swelling water tank.motor is the cylinder sleeve high vibration in running, and the turbulent flow of cooling water channel, inevitably produce bubble in current, drain if bubble is untimely, be entrained in cooling water, can cause the reduction of cooling effect, even cause the destructions such as cavitation pitting of cylinder sleeve, the engine cooling water route is communicated with the outlet pipe water jacket, cooling water flow is during to the outlet pipe water jacket, water velocity slows down, bubble is separated from current easily, bubble is discharged to swelling water tank by the connecting tube between outlet pipe water jacket and swelling water tank, after swelling water tank reaches certain pressure, outlet valve is opened unnecessary gas is discharged in atmosphere, in the assurance water jacket, pressure is constant.Through a power cycle, motor is after standing, and water temperature reduces, pressure decreased in cooling water channel at this time, and the water in swelling water tank is back in cooling water channel, and the cooling liquid in motor water route is played supplementary function, guarantees the use amount of cooling liquid.
Described outlet valve is safety valve, and when the pressure in swelling water tank reached certain pressure, exhaust valve opening was discharged unnecessary gas, when pressure drops to certain value, exhaust valve closure make the pressure in swelling water tank keep constant, thereby the water route internal pressure that guarantees motor is constant.
Described outlet pipe is provided with pressure relief opening, and automatic decompression valve is installed on pressure relief opening, and the releasing pressure automatically valve outlet port is communicated with by the exhaust gas inlet of branched pipe with the low pressure stage pressurized machine.Exhaust gas pressure is too high in outlet pipe; cause the capacity for work of high pressure stage pressurized machine excessively strong; when perhaps pressure surpasses the choke line pressure of high pressure stage pressurized machine; automatic decompression valve is opened waste gas is directly entered the turbine box of low pressure stage pressurized machine from branched pipe; because the minimum circulation sectional area ratio of low pressure stage pressurized machine is larger; and whole low pressure stage pressurized machine also relatively high pressure level pressurized machine is larger; therefore choking phenomenon can not occur in the low pressure stage pressurized machine, plays a protective role during to the high rotating speed of motor, high load.
The waste gas outlet of described low pressure stage pressurized machine is connected with silencing apparatus by pipeline, reduces the noise of motor.
The fresh air inlet of described low pressure stage pressurized machine is connected with air-strainer by pipeline, and filtering enters the airborne suspending particulate matter of cylinder, reduces the wearing and tearing of motor.
A kind of motor, its cylinder head relief opening is connected with two-step supercharging vent systems as described above.
Description of drawings
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the plan view of Fig. 1.
Embodiment
as depicted in figs. 1 and 2, the two-step supercharging vent systems comprises the outlet pipe 3 that is connected with the cylinder head relief opening, outlet pipe 3 is connected with the waste gas inlet of high pressure stage pressurized machine 4, the waste gas outlet of high pressure stage pressurized machine 4 is communicated with the waste gas inlet of low pressure stage pressurized machine 9 by a shorter transition tube 8, the waste gas outlet of low pressure stage pressurized machine 9 is connected with silencing apparatus 10 by pipeline, the fresh air inlet of low pressure stage pressurized machine 9 is connected with air-strainer 7 by pipeline, the fresh air outlet of low pressure stage pressurized machine 9 is communicated with by the fresh air inlet of pipeline with high pressure stage pressurized machine 4, the fresh air outlet of high pressure stage pressurized machine 4 is connected with the suction port of motor by pipeline.
Outlet pipe 3 is provided with the outlet pipe water jacket, and namely the tube wall of outlet pipe 3 comprises inner and outer wall, and inner and outer wall forms the outlet pipe water jacket, introduces cooling water in the outlet pipe water jacket.The outlet pipe water jacket can be communicated with the original cooling water channel of motor, the outlet pipe water jacket also is communicated with the swelling water tank 1 of setting height(from bottom) higher than outlet pipe 3 by connecting tube 2, swelling water tank 1 can be arranged on the bolt lug of outlet pipe 3 and make swelling water tank 1 be in the peak of cooling water channel, swelling water tank 1 top is equipped with outlet valve, outlet valve can be selected safety valve, also can select the one-way valve of other kinds.motor is the cylinder sleeve high vibration in running, and the turbulent flow of cooling water channel, inevitably produce bubble in current, drain if bubble is untimely, be entrained in cooling water, can cause the reduction of cooling effect, even cause the destructions such as cavitation pitting of cylinder sleeve, the engine cooling water route is communicated with the outlet pipe water jacket, cooling water flow is during to the outlet pipe water jacket, water velocity slows down, bubble is separated from current easily, bubble is discharged to swelling water tank 1 by the connecting tube 2 between outlet pipe water jacket and swelling water tank 1, when the pressure in swelling water tank 1 reaches certain pressure, exhaust valve opening is discharged unnecessary gas, when pressure drops to certain value, exhaust valve closure, make the pressure in swelling water tank 1 keep constant, thereby the water route internal pressure that guarantees motor is constant.Through a power cycle, motor is after standing, and water temperature reduces, pressure decreased in cooling water channel at this time, and the water in swelling water tank 1 is back in cooling water channel, and the cooling liquid in motor water route is played supplementary function, guarantees the use amount of cooling liquid.
Be respectively equipped with the turbine case water jacket on the turbine case of high pressure stage pressurized machine 4 and low pressure stage pressurized machine 9, the shell wall that is turbine case comprises volute inwall and volute outer wall, volute inwall and volute outer wall form the turbine case water jacket, introduce cooling water in the turbine case water jacket, the turbine case water jacket of high pressure stage pressurized machine 4 and the turbine case water jacket of low pressure stage pressurized machine 9 can be communicated with swelling water tank 1 by pipeline respectively, provide cooling water by swelling water tank 1, also can be communicated with other cooling water pipelines of motor.High pressure stage pressurized machine 4 is prior art with structure and the working principle of low pressure stage pressurized machine 9, does not repeat them here.
Outlet pipe 3 is provided with pressure relief opening, and valve seat 5 is installed on pressure relief opening, and automatic decompression valve 6 is installed on valve seat 5, and automatic decompression valve 6 outlets are communicated with the exhaust gas inlet of low pressure stage pressurized machine 9 by branched pipe 11.Exhaust gas pressure is too high in outlet pipe; cause the capacity for work of high pressure stage pressurized machine 4 excessively strong; when perhaps pressure surpasses the choke line pressure of high pressure stage pressurized machine 4; automatic decompression valve 6 is opened waste gas is directly entered the turbine box of low pressure stage pressurized machine 9 from branched pipe 11; because the minimum circulation sectional area ratio of low pressure stage pressurized machine 9 is larger; and whole low pressure stage pressurized machine 9 also relatively high pressure level pressurized machine 4 is larger; therefore choking phenomenon can not occur in low pressure stage pressurized machine 9, plays a protective role during to the high rotating speed of motor, high load.
During engine operation, high-temp waste gas enters outlet pipe 3 after the relief opening of cylinder head is discharged, enter the turbine box of high pressure stage pressurized machine 4 through outlet pipe 3, and waste gas enters the turbine box of low pressure stage pressurized machine 9 by transition tube, then enter in silencing apparatus 10, be discharged in atmosphere at last.In exhaust process, high-temp waste gas promotes the two-stage supercharger acting, also passes through the cooling of cooling water, and exhaust gas temperature reduces greatly, and the surface temperature of motor reduces simultaneously greatly, has satisfied the needs that the staff safeguards in real time, maintains.Fresh air enters the gas compressor of low pressure stage pressurized machine 9 through air-strainer 7, fresh air outlet through low pressure stage pressurized machine 9 enters senior pressurized machine by pipeline, after the pressurization of two-stage supercharger, increased the density of the induced air of motor, enter the suction tude of motor, suck the acting of engine air in-cylinder combustion.This two-step supercharging vent systems provides the air of large flow, high pressure ratio for motor, satisfied the high-power and higher low speed torque demand of motor, makes it satisfy the demand of ship machine, yacht machine.
The above is only preferred embodiment of the present utility model, is not limited to the utility model.Previous embodiment has been described in detail the utility model, and for a person skilled in the art, it still can be modified to the technological scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characteristics wherein is equal to replacement.In every case within inventive concept scope of the present utility model, any modification of making, be equal to replacement, improvement etc., within all being included in protection domain of the present utility model.

Claims (8)

1. two-step supercharging vent systems, comprise the outlet pipe (3) that is connected with the cylinder head relief opening, outlet pipe (3) is connected with the waste gas inlet of high pressure stage pressurized machine (4), the waste gas outlet of high pressure stage pressurized machine (4) is communicated with the waste gas inlet of low pressure stage pressurized machine (9), the fresh air outlet of low pressure stage pressurized machine (9) is communicated with the fresh air inlet of high pressure stage pressurized machine (4), the fresh air outlet of high pressure stage pressurized machine (4) is connected with motor by pipeline, it is characterized in that described outlet pipe (3) is provided with the outlet pipe water jacket, the turbine case of high pressure stage pressurized machine (4) is provided with high pressure stage turbine case water jacket, described outlet pipe water jacket, high pressure stage turbine case water jacket are communicated with the engine cooling water route respectively.
2. two-step supercharging vent systems according to claim 1 is characterized in that also being provided with low pressure stage turbine case water jacket on the turbine case of described low pressure stage pressurized machine (9), and low pressure stage turbine case water jacket is communicated with the engine cooling water route respectively.
3. two-step supercharging vent systems according to claim 1, is characterized in that described outlet pipe water jacket also is communicated with the swelling water tank (1) of setting height(from bottom) higher than outlet pipe (3), and swelling water tank is equipped with outlet valve on (1).
4. two-step supercharging vent systems according to claim 3, is characterized in that described outlet valve is one-way valve.
5. the described two-step supercharging vent systems of according to claim 1 to 4 any one, it is characterized in that described outlet pipe (3) is provided with pressure relief opening, automatic decompression valve (6) is installed on pressure relief opening, and automatic decompression valve (6) outlet is communicated with the exhaust gas inlet of low pressure stage pressurized machine (9) by branched pipe (11).
6. two-step supercharging vent systems according to claim 5, is characterized in that the waste gas outlet of described low pressure stage pressurized machine (9) is connected with silencing apparatus (10) by pipeline.
7. two-step supercharging vent systems according to claim 5, is characterized in that the fresh air inlet of described low pressure stage pressurized machine (9) is connected with air-strainer (7) by pipeline.
8. a motor, is characterized in that its cylinder head relief opening is connected with two-step supercharging vent systems as described in claim 1 to 7 any one.
CN2012207279337U 2012-12-26 2012-12-26 Two-stage boost exhaust system and engine with same Expired - Lifetime CN202991229U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012207279337U CN202991229U (en) 2012-12-26 2012-12-26 Two-stage boost exhaust system and engine with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012207279337U CN202991229U (en) 2012-12-26 2012-12-26 Two-stage boost exhaust system and engine with same

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CN202991229U true CN202991229U (en) 2013-06-12

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CN2012207279337U Expired - Lifetime CN202991229U (en) 2012-12-26 2012-12-26 Two-stage boost exhaust system and engine with same

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109555589A (en) * 2019-02-15 2019-04-02 广西玉柴机器股份有限公司 Exhaust pipe structure
CN109667651A (en) * 2019-03-07 2019-04-23 广西玉柴机器股份有限公司 A kind of water-cooling exhaust pipe
CN109890697A (en) * 2016-09-23 2019-06-14 沃尔沃遍达公司 Cooling water drainage place system for marine engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109890697A (en) * 2016-09-23 2019-06-14 沃尔沃遍达公司 Cooling water drainage place system for marine engine
CN109890697B (en) * 2016-09-23 2020-06-19 沃尔沃遍达公司 Cooling water discharge system for marine engine
CN109555589A (en) * 2019-02-15 2019-04-02 广西玉柴机器股份有限公司 Exhaust pipe structure
CN109667651A (en) * 2019-03-07 2019-04-23 广西玉柴机器股份有限公司 A kind of water-cooling exhaust pipe

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Granted publication date: 20130612