CN104653358A - Chain type pipeline throat area adjusting system - Google Patents

Abstract

A chain type pipeline throat area adjusting system belongs to the technical field of machinery design and comprises a compressor, an engine, a turbine, connecting pipes, a valve seat, a valve body, a rotating shaft, an accommodating cavity, a fixing body, through pipes, an elastic component, a separation plate, a rotation body and a connection plate. One end of the rotation body extends into a first through pipe and has a sealed contact with the wall surface of the first through pipe; the other end of the rotation body is fixedly connected with the separation plate; one end of a second connecting pipe is communicated with an exhaust pipe of the engine; and the other end of the second connecting pipe passes through the fixing body to be communicated with the first through pipe. When the exhaust pipe of the engine possesses high pressure, the rotating body drives a butterfly valve to clockwise rotate; large recirculation efficiency of the engine is achieved; low engine detonation pressure is acquired; when the air exhaust pipe of the engine possesses low pressure, the rotating body drives the butterfly valve to counterclockwise rotate; low recirculation efficiency of the engine is achieved; and low engine oil consumption is acquired. The chain type pipeline throat area adjusting system is rationally designed, simply structured and suitable for exhaust recirculation system of the engine.

Description

Chain type pipeline throat area regulating system

Technical field

What the present invention relates to is a kind of exhaust gas recycling system, particularly a kind of chain type pipeline throat area regulating system of technical field of mechanical design.

Background technique

The noxious emission of motor is the main source causing pollution of atmosphere, along with the significance of environmental protection problem increases increasingly, reduces the important directions that this target of Engine's Harmful Emission becomes development of engine in the world today.Along with the consumption of world oil goods rises year by year, international oil price remains high, and the Economy of diesel-oil vehicle is outstanding day by day, and this makes diesel engine in power train in vehicle application in occupation of more and more consequence.So carry out the research of Harmful Emissions of Diesel Engine controlling method, it is the top priority of the person that is engaged in Design Technology for Diesels.Exhaust gas recycling system is that the sub-fraction of the waste gas produced by diesel engine sends cylinder back to again.Exhaust gas recirculation will retarded combustion process owing to having inertia, and that is velocity of combustion will slow down thus cause the pressure initiation process in firing chamber to slow down, main cause that oxynitrides can reduce that Here it is.In addition, improve ER EGR Rate and total extraction flow can be made to reduce, therefore total in toxic emission pollutant output quantity will reduce relatively.When middling speed operating mode, motor needs larger exhaust gas recirculation rate, to reduce row's temperature, reduces to pollute; When speed operation, motor needs less exhaust gas recirculation rate, to improve the air inflow of motor.

Through finding the retrieval of prior art document, China Patent No. ZL200410063439.5, patent name: electronic EGR gas control system, this patented technology provides a kind of device controlling engine exhaust recirculation rate, can take into account high speed conditions in motor preferably; But the change of its exhaust gas recirculation rate is realized by special control structure, thus the more complicated that control system is become.

Summary of the invention

The present invention is directed to above-mentioned the deficiencies in the prior art, provide a kind of chain type pipeline throat area regulating system, make its exhaust gas recirculation rate can self-control, take into account the middle and slow speed of revolution operating mode of motor preferably, and structure is simple, does not need special control mechanism.

The present invention is achieved through the following technical solutions, the present invention includes compressor air inlet machine pipe, gas compressor, engine air inlet tube, motor, engine exhaust pipe, turbine, turbine exhaust pipe, coupling shaft, first connecting tube, first running shaft, butterfly valve, second connecting tube, second running shaft, chain, cavity volume, fixed body, first runs through pipe, second runs through pipe, elastic member, dividing plate, solid of rotation and connecting plate, the air inlet/outlet of gas compressor respectively with the air outlet of compressor air inlet machine pipe, the suction port of engine air inlet tube is connected, the air inlet/outlet of motor respectively with the air outlet of engine air inlet tube, the suction port of engine exhaust pipe is connected, the air inlet/outlet of turbine respectively with the air outlet of engine exhaust pipe, the suction port of turbine exhaust pipe is connected, gas compressor is coaxially connected by coupling shaft with turbine, the rear end of the first running shaft is embedded on the inwall of the first connecting tube through after the first connecting tube, the front end of the first running shaft is in the outside of the first connecting tube, butterfly valve to be arranged in the first connecting tube and to be consolidated with the first running shaft, the longitudinal section of cavity volume is circular, fixed body, the longitudinal section of solid of rotation is arc-shaped, cavity volume, fixed body, the cross section of solid of rotation is rectangular, and fixed body to be arranged in cavity volume and to be consolidated with the internal face of cavity volume, and first runs through pipe, second runs through pipe is arranged in fixed body, and first runs through pipe, second runs through pipe links together, and first runs through pipe, second cross section running through pipe is rectangular, second cross sectional area running through pipe is greater than the cross sectional area that first runs through pipe, dividing plate is arranged on second to be run through in pipe and to seal with the second wall running through pipe and contact, one end of solid of rotation is stretched into first and to be run through in pipe and seal with the first wall running through pipe and contact, the other end and the dividing plate of solid of rotation are consolidated, the rear end of the second running shaft is embedded on the rear wall of cavity volume through after cavity volume, the front end of the second running shaft in the outside of cavity volume, solid of rotation, connecting plate, second running shaft, all be consolidated, dividing plate is linked together by elastic member and the second upper wall surface running through pipe, the front end of the first running shaft, the front end of the second running shaft is linked together by chain, the two ends compressor air inlet machine pipe respectively of the first connecting tube, turbine exhaust pipe is connected, and one end of the second connecting tube is connected with engine exhaust pipe, and the other end of the second connecting tube is connected through running through pipe with first after fixed body.

Further, elastic member is spring in the present invention, and the first connecting tube, the second connecting tube are uniform section pipe, and the cross section of butterfly valve is circular.

In working procedure of the present invention, solid of rotation can rotate freely in cavity volume, and solid of rotation, connecting plate, the second running shaft are consolidated, and the first running shaft is connected by chain with the second running shaft, and butterfly valve and the first running shaft are consolidated; Therefore, solid of rotation, connecting plate, the first running shaft, the second running shaft, butterfly valve can synchronous rotary.When engine exhaust overpressure is larger, it is also higher that above dividing plate second runs through overpressure, because the second cross sectional area running through pipe is greater than the cross sectional area that first runs through pipe, so solid of rotation drives butterfly valve to turn clockwise and elongated elastomeric member, in first connecting tube, throat area becomes large, engine exhaust recirculation rate increases, thus the detonation pressure of motor and maximum combustion temperature are reduced; When engine exhaust overpressure is less, it is also less that above dividing plate second runs through overpressure, be rotated counterclockwise in the stretching action following rotator of elastic member, solid of rotation drives butterfly valve to be rotated counterclockwise, in first connecting tube, throat area diminishes again, engine exhaust recirculation rate reduces, thus air input of engine by air is increased, and oil consumption reduces.

Compared with prior art, the present invention has following beneficial effect: the present invention is reasonable in design, structure is simple, be applicable to the exhaust gas recycling system with turbosupercharger, the middle and slow speed of revolution operating mode of motor can be taken into account, exhaust gas recycling system can be made again not need special exhaust gas recirculation rate control mechanism.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is the structural representation of A-A section in Fig. 1;

Fig. 3 is the structural representation of B-B section in Fig. 1;

Fig. 4 is the structural representation of C-C section in Fig. 1;

Fig. 5 is chain structure schematic diagram of the present invention;

Wherein: 1, compressor air inlet machine pipe, 2, gas compressor, 3, engine air inlet tube, 4, motor, 5, engine exhaust pipe, 6, turbine, 7, turbine exhaust pipe, 8, coupling shaft, 9, the first connecting tube, the 10, first running shaft, 11, butterfly valve, the 12, second connecting tube, 13, the second running shaft, 14, chain, 15, cavity volume, 16, fixed body, 17, first runs through pipe, and 18, second runs through pipe, and 19, elastic member, 20, dividing plate, 21, solid of rotation, 22, connecting plate.

Embodiment

Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment, premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.

embodiment

As shown in Figures 1 to 5, the present invention includes compressor air inlet machine pipe 1, gas compressor 2, engine air inlet tube 3, motor 4, engine exhaust pipe 5, turbine 6, turbine exhaust pipe 7, coupling shaft 8, first connecting tube 9, first running shaft 10, butterfly valve 11, second connecting tube 12, second running shaft 13, chain 14, cavity volume 15, fixed body 16, first runs through pipe 17, second runs through pipe 18, elastic member 19, dividing plate 20, solid of rotation 21 and connecting plate 22, the air inlet/outlet of gas compressor 2 respectively with the air outlet of compressor air inlet machine pipe 1, the suction port of engine air inlet tube 3 is connected, the air inlet/outlet of motor 4 respectively with the air outlet of engine air inlet tube 3, the suction port of engine exhaust pipe 5 is connected, the air inlet/outlet of turbine 6 respectively with the air outlet of engine exhaust pipe 5, the suction port of turbine exhaust pipe 7 is connected, gas compressor 2 is coaxially connected by coupling shaft 8 with turbine 6, the rear end of the first running shaft 10 is embedded on the inwall of the first connecting tube 9 through after the first connecting tube 9, the front end of the first running shaft 10 is in the outside of the first connecting tube 9, butterfly valve 11 to be arranged in the first connecting tube 9 and to be consolidated with the first running shaft 10, the longitudinal section of cavity volume 15 is circular, fixed body 16, the longitudinal section of solid of rotation 21 is arc-shaped, cavity volume 15, fixed body 16, the cross section of solid of rotation 21 is rectangular, and fixed body 16 to be arranged in cavity volume 15 and to be consolidated with the internal face of cavity volume 15, and first runs through pipe 17, second runs through pipe 18 is arranged in fixed body 16, and first runs through pipe 17, second runs through pipe 18 links together, and first runs through pipe 17, second cross section running through pipe 18 is rectangular, second cross sectional area running through pipe 18 is greater than the cross sectional area that first runs through pipe 17, dividing plate 20 is arranged on second to be run through in pipe 18 and seals with the second wall running through pipe 18 and contact, one end of solid of rotation 21 is stretched into first and to be run through in pipe 17 and seal with the first wall running through pipe 17 and contact, the other end and the dividing plate 20 of solid of rotation 21 are consolidated, the rear end of the second running shaft 13 is embedded on the rear wall of cavity volume 15 through after cavity volume 15, the front end of the second running shaft 13 in the outside of cavity volume 15, solid of rotation 21, connecting plate 22, second running shaft 13 is all consolidated, and dividing plate 20 is linked together by elastic member 19 and the second upper wall surface running through pipe 18, the front end of the first running shaft 10, the front end of the second running shaft 13 is linked together by chain 14, the two ends compressor air inlet machine pipe 1 respectively of the first connecting tube 9, turbine exhaust pipe 7 is connected, and one end of the second connecting tube 12 is connected with engine exhaust pipe 5, and the other end of the second connecting tube 12 is connected through running through pipe 17 with first after fixed body 16, and elastic member 19 is spring, the first connecting tube 9, second connecting tube 12 is uniform section pipe, and the cross section of butterfly valve 11 is circular.

In working procedure of the present invention, solid of rotation 21 can rotate freely in cavity volume 15, solid of rotation 21, connecting plate 22, second running shaft 13 are consolidated, and the first running shaft 10 is connected by chain 14 with the second running shaft 13, and butterfly valve 11 and the first running shaft 10 are consolidated; Therefore, solid of rotation 21, connecting plate 22, first running shaft 10, second running shaft 13, butterfly valve 11 can synchronous rotary.When engine exhaust pipe 5 internal pressure is larger, it is also higher that above dividing plate 20 second runs through pipe 18 internal pressure, because the second cross sectional area running through pipe 18 is greater than the cross sectional area that first runs through pipe 17, so solid of rotation 21 drives butterfly valve 11 to turn clockwise and elongated elastomeric member 19, throat area in first connecting tube 9 becomes large, engine exhaust recirculation rate increases, thus the detonation pressure of motor and maximum combustion temperature are reduced; When engine exhaust pipe 5 internal pressure is less, it is also less that above dividing plate 20 second runs through overpressure, be rotated counterclockwise in elastic member 19 stretching action following rotator 21, solid of rotation 21 drives butterfly valve 11 to be rotated counterclockwise, throat area in first connecting tube 9 diminishes again, engine exhaust recirculation rate reduces, thus air input of engine by air is increased, and oil consumption reduces.

Claims (2)

1. a chain type pipeline throat area regulating system, comprise compressor air inlet machine pipe (1), gas compressor (2), engine air inlet tube (3), motor (4), engine exhaust pipe (5), turbine (6), turbine exhaust pipe (7) and coupling shaft (8), the air inlet/outlet of gas compressor (2) respectively with the air outlet of compressor air inlet machine pipe (1), the suction port of engine air inlet tube (3) is connected, the air inlet/outlet of motor (4) respectively with the air outlet of engine air inlet tube (3), the suction port of engine exhaust pipe (5) is connected, the air inlet/outlet of turbine (6) respectively with the air outlet of engine exhaust pipe (5), the suction port of turbine exhaust pipe (7) is connected, gas compressor (2) is coaxially connected by coupling shaft (8) with turbine (6), it is characterized in that, also comprise the first connecting tube (9), first running shaft (10), butterfly valve (11), second connecting tube (12), second running shaft (13), chain (14), cavity volume (15), fixed body (16), first runs through pipe (17), second runs through pipe (18), elastic member (19), dividing plate (20), solid of rotation (21) and connecting plate (22), the rear end of the first running shaft (10) is embedded on the inwall of the first connecting tube (9) through after the first connecting tube (9), the front end of the first running shaft (10) is in the outside of the first connecting tube (9), butterfly valve (11) to be arranged in the first connecting tube (9) and to be consolidated with the first running shaft (10), the longitudinal section of cavity volume (15) is circular, fixed body (16), the longitudinal section of solid of rotation (21) is arc-shaped, cavity volume (15), fixed body (16), the cross section of solid of rotation (21) is rectangular, fixed body (16) to be arranged in cavity volume (15) and to be consolidated with the internal face of cavity volume (15), first runs through pipe (17), second runs through pipe (18) is arranged in fixed body (16), first runs through pipe (17), second runs through pipe (18) links together, first runs through pipe (17), second cross section running through pipe (18) is rectangular, second cross sectional area running through pipe (18) is greater than the cross sectional area that first runs through pipe (17), dividing plate (20) is arranged on second to be run through in pipe (18) and to run through the wall of managing (18) and seal with second and contact, one end of solid of rotation (21) is stretched into first and to be run through in pipe (17) and to run through the wall of managing (17) and seal with first and contact, the other end and the dividing plate (20) of solid of rotation (21) are consolidated, the rear end of the second running shaft (13) is embedded on the rear wall of cavity volume (15) through after cavity volume (15), the front end of the second running shaft (13) is in the outside of cavity volume (15), solid of rotation (21), connecting plate (22), second running shaft (13) is all consolidated, dividing plate (20) runs through the upper wall surface of managing (18) by elastic member (19) and second and links together, the front end of the first running shaft (10), the front end of the second running shaft (13) is linked together by chain (14), two ends compressor air inlet machine pipe (1) respectively of the first connecting tube (9), turbine exhaust pipe (7) is connected, one end of second connecting tube (12) is connected with engine exhaust pipe (5), the other end of the second connecting tube (12) runs through with first afterwards through fixed body (16) manages (17) and is connected.

2. chain type pipeline throat area regulating system according to claim 1, is characterized in that, elastic member (19) is spring, and the first connecting tube (9), the second connecting tube (12) are uniform section pipe, and the cross section of butterfly valve (11) is circular.