CN207761766U - A kind of automatic shunt formula ternary catalyzing unit is taken over - Google Patents

Abstract

The utility model discloses a kind of automatic shunt formula ternary catalyzing units to take over, including air inlet pipe, bypass pipe, heat power column, bypass damper group, cooling jacket, the bypass pipe is recessed tubulose, the bypass pipe both ends are communicated with the air inlet pipe, the bypass pipe is equipped with the bypass damper group with interface of the air inlet pipe close to enmgine exhaust one end, the air inlet pipe is equipped with the heat power column with the bypass pipe in the linkage section of enmgine exhaust one end, the cooling jacket is sleeved on the tube wall of the bypass pipe, the cooling jacket is equipped with water inlet, discharge outlet.It is taken over using a kind of automatic shunt formula ternary catalyzing unit provided by the utility model, when engine exhaust temperature is more than the normal working temperature of ternary catalyzing unit, portion is introduced into bypass pipe by bypass damper group opening to cool down, and ternary catalyzing unit is avoided to damage.

Description

A kind of automatic shunt formula ternary catalyzing unit is taken over

Technical field

The utility model is related to Tailgas purifier of engine field more particularly to a kind of automatic shunt formula ternary catalyzing units It takes over.

Background technology

Ternary catalyzing unit is mounted in most important outer purifier in automobile exhaust system, it can be by vehicle exhaust The pernicious gases such as CO, HC and NOx of discharge are changed into harmless carbon dioxide, water and nitrogen by oxidation and reduction.When When the vehicle exhaust of high temperature passes through purifier, the cleanser in ternary catalyzing unit will enhance the work of tri- kinds of gas of CO, HC and NOx Property, promote it to carry out certain oxidationreduction chemical reaction, wherein CO is oxidized into colourless, nontoxic titanium dioxide at high temperature Carbon gas；HC compounds are oxidized to water (H at high temperature₂And carbon dioxide 0)；NOx is reduced into nitrogen and oxygen.Three kinds of harmful gas Body becomes innocuous gas, and vehicle exhaust is made to be purified.The ideal working temperature of ternary catalyzing unit is between 400 DEG C to 800 DEG C, So the installation site of general ternary catalyzing unit is all close proximity to the exhaust manifold of engine, however when the engine is working between compared with When long and running power is larger, enmgine exhaust is expelled to the exhaust gas temperature in ternary catalyzing unit easily more than 1000 DEG C, When being more than 1000 DEG C into the exhaust gas temperature in ternary catalyzing unit, ternary catalyzing unit reaction is not only resulted in not exclusively and is easily burnt Catalyst coat in bad ternary catalyzing unit.201720072300 .X of Chinese patent document discloses a kind of ternary catalyzing unit Humidity control system, the system reduce exhaust gas temperature by installing air cooler and fan additional, its shortcoming is that, air cooler and fan Larger installation space is needed in practical installation process, by taking automobile engine as an example for, it is compact-sized in engine nacelle, The space for installing fan and air cooler additional is small.

Utility model content

In order to solve the problems of the above-mentioned prior art, the utility model proposes a kind of automatic shunt formula three-element catalytics Device is taken over, and under the premise of occupying installation space few as possible, realizes the automatic adjustment of ternary catalyzing unit intake air temperature.

What the technical solution of the utility model was realized in：

A kind of automatic shunt formula ternary catalyzing unit is taken over, which is characterized in that including air inlet pipe, bypass pipe, heat power column, side Trapdoor group, cooling jacket, the bypass pipe are recessed tubulose, which communicates with the air inlet pipe, the bypass pipe Interface with the air inlet pipe close to enmgine exhaust one end is equipped with the bypass damper group, the air inlet pipe and institute It states bypass pipe and is equipped with the heat power column in the linkage section of enmgine exhaust one end, the cooling jacket is sleeved on described On the tube wall of bypass pipe, which is equipped with water inlet, discharge outlet, and the water inlet is defeated with engine-cooling system through pipeline Outlet pipe connects, and the discharge outlet connects through pipeline with the water pipe that flows back in engine-cooling system, and the cooling jacket is equipped with solid Fixed board, the heat power column are fixed on the inner wall of the air inlet pipe and the bypass pipe joint, which includes heat Quick room, push rod chamber, filling temperature-sensitive is cured in the temperature-sensitive room, and sealing plate is equipped in the push rod chamber, which is isolated the heat Quick room and the push rod chamber, the bypass damper group include：Valve seating, valve, valve stem, cross bar, spring housing, the valve seating Through-hole is equipped in the joint of enmgine exhaust one end, the valve seating positioned at the air inlet pipe and the bypass pipe, The through-hole and the heat power column coaxial line, the initial position of the valve are resisted against on the valve seating, the valve stem One end vertical direction is fixed on the valve, and the outer circumference surface of the cross bar is vertically fixed on the other end of the valve stem, The spring housing is located at the bypass pipe on the inner wall of enmgine exhaust one end, and the spring housing includes spring, passes Lever, and be provided with for the spring to be pressed into the indoor resilient support portion of spring, described drive link one end is fixed on On the end face of the resilient support portion far from the spring housing, the other end is fixed on the sealing plate far from institute across the through-hole On the end face for stating temperature-sensitive room, the cross bar tail end is vertically fixed on the excircle of the drive link, the cross bar with it is described The end face of valve is parallel, and the drive link is parallel with the valve stem.

In this automatic shunt formula ternary catalyzing unit of the utility model is taken over, the water inlet is located at the cooling water Position of the set close to the bypass damper group and close to the air inlet pipe, the discharge outlet are located at the cooling jacket far from described The position of bypass damper group and the separate air inlet pipe, the water inlet are arranged with the discharge outlet skew symmetry.

This automatic shunt formula ternary catalyzing unit for implementing the utility model is taken over, and has the advantages that：Temperature-sensitive room Interior temperature-sensitive is cured when the exhaust gas temperature in entering ternary catalyzing unit is excessively high, the cured automatic thawing expansion of temperature-sensitive, in the work of drive link With lower opening bypass pipe valve so that the exhaust gas of part enters after bypass pipe carries out cooling to be converged into air inlet pipe again, has system Make the advantages of simple, production cost is low, reliable operation；Cooling jacket is sleeved on bypass pipe, is avoided cooling device and is occupied excessively Space, internal cooling water are directed to engine cool system, are increased without other additional cooling equipment, and cooling effect is stablized Reliably.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the structural schematic diagram of temperature-sensitive column in utility model；

Fig. 3 is the structural schematic diagram of bypass damper group in the utility model；

Fig. 4 is the structural schematic diagram of cooling jacket in the utility model.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe.

A kind of automatic shunt room ternary catalyzing unit as shown in Fig. 1 to 4 is taken over, including air inlet pipe 1, bypass pipe 2, cooling Water jacket 3, bypass damper group 4, heat power column 5, bypass pipe 2 are concave shape so that the exhaust gas of shunting has longer cooling duct, other 2 two-port of siphunculus is all connected with air inlet pipe 1, and 1 one end of air inlet pipe connects enmgine exhaust, and the other end connects three-element catalytic Device, bypass damper group 4 are mounted on bypass pipe 2 with air inlet pipe 1 close to the interface of enmgine exhaust one end, heat power column 5 Mounted on air inlet pipe 1 and bypass pipe 2 close to the junction of enmgine exhaust one end, cooling jacket 3 is sleeved on the pipe of bypass pipe 2 On wall, cooling jacket 3 is equipped with water inlet 31, discharge outlet 32, and water inlet 31 exports water pipe phase through pipeline and engine-cooling system It connects, discharge outlet 32 connects through pipeline with the water pipe that flows back in engine-cooling system, and cooling jacket 3 is equipped with fixed plate 33, for solid Determine cooling jacket 3, heat power column 5 is fixed on the inner wall of 2 joint of air inlet pipe 1 and bypass pipe, and heat power column 5 includes temperature-sensitive room 51, push rod chamber 52, the interior filling temperature-sensitive in temperature-sensitive room 51 is cured, and sealing plate 53 is equipped in push rod chamber 52, and temperature-sensitive room 51 is isolated in sealing plate 53 With push rod chamber 52, bypass damper group 4 includes valve seating 41, valve 42, valve stem 44, cross bar 43, spring housing 45, valve seating 41 Through-hole 49, through-hole are equipped in the joint of enmgine exhaust one end, valve seating 41 positioned at air inlet pipe 1 and bypass pipe 2 48 are resisted against with spring housing 45,5 coaxial line of heat power column, the initial position of valve 42 on valve seating 41, and 44 one end of valve stem is perpendicular For histogram to being fixed on valve 42, cross bar 43 is vertically fixed on the other end of valve stem 44, and spring housing 45 includes spring 47, elastic force Spring 47 is pressed into spring housing 45 by support portion 46, drive link 48, resilient support portion 46, and 48 one end of drive link is fixed on elastic force branch On end face of the support part 46 far from spring housing 45, the other end is fixed on end face of the sealing plate 51 far from temperature-sensitive room 51 across through-hole 49 On, 43 tail end of cross bar is vertically fixed on the excircle of drive link 48, and cross bar 48 is parallel with the end face of valve 42, drive link 48 with Valve stem 44 is parallel.

In the operational process of engine, the exhaust gas after burning in cylinder is exported from exhaust manifold, and it is new to be introduced into this practicality Automatic shunt formula in type is taken over, and is entered back into and is carried out catalysis reaction in ternary catalyzing unit, and toxic and harmful gas is dissolved at nontoxic It is then exhausted from after innocuous gas, when exhaust gas temperature is no more than the normal working temperature of ternary catalyzing unit, ternary catalyzing unit can be normal Carry out catalysis reaction work, otherwise when the engine operates between long or engine power it is larger when, arranged from exhaust manifold The exhaust temperature gone out easily exceeds the normal working temperature range of ternary catalyzing unit, at this point, the cured beginning of temperature-sensitive in temperature-sensitive room 51 Expansion, sealing plate 53 is jacked up, and under the drive of drive link 48, opens valve 42, the exhaust gas of part flows into bypass pipe 2, warp After the cooling of supercooling water jacket 3, then enter in ternary catalyzing unit after converging with the exhaust gas in air inlet pipe 1 so that urged into ternary The gas bulk temperature changed in device is reduced within the scope of the reasonable working temperature of ternary catalyzing unit, is avoided anti-in ternary catalyzing unit Agent is answered to be burnt out by super temperature.

As a preferred option, in this automatic shunt formula ternary catalyzing unit of the utility model is taken over, water inlet 31 Be arranged in cooling jacket 3 close to bypass damper group 4 and with the position of air inlet pipe 1, the setting of discharge outlet 32 is in cooling jacket 3 far from other The position of trapdoor group 4 and air inlet pipe 1, water inlet 31 are arranged with 32 skew symmetry of discharge outlet so that the glide path of cooling water is most It is possible to take away more waste-gas heats.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Utility model spirit and principle within, made by any modification, equivalent replacement and improve etc., should be included in the utility model Protection domain within.

Claims (2)

1. a kind of automatic shunt formula ternary catalyzing unit is taken over, which is characterized in that including air inlet pipe, bypass pipe, heat power column, bypass Valve group, cooling jacket, the bypass pipe are recessed tubulose, which communicates with the air inlet pipe, the bypass pipe and Interface of the air inlet pipe close to enmgine exhaust one end is equipped with the bypass damper group, the air inlet pipe with it is described Bypass pipe is equipped with the heat power column in the linkage section of enmgine exhaust one end, and the cooling jacket is sleeved on the side On the tube wall of siphunculus, which is equipped with water inlet, discharge outlet, and the water inlet is exported through pipeline and engine-cooling system Water pipe connects, and the discharge outlet connects through pipeline with the water pipe that flows back in engine-cooling system, and the cooling jacket, which is equipped with, to be fixed Plate, the heat power column are fixed on the inner wall of the air inlet pipe and the bypass pipe joint, which includes temperature-sensitive Room, push rod chamber, filling temperature-sensitive is cured in the temperature-sensitive room, and sealing plate is equipped in the push rod chamber, which is isolated the temperature-sensitive Room and the push rod chamber, the bypass damper group include：Valve seating, valve, valve stem, cross bar, spring housing, the valve seat A through-hole is equipped in the joint of enmgine exhaust one end, the valve seating in the air inlet pipe and the bypass pipe, The through-hole and the heat power column coaxial line, the initial position of the valve are resisted against on the valve seating, the valve stem One end vertical direction is fixed on the valve, and the outer circumference surface of the cross bar is vertically fixed on the other end of the valve stem, The spring housing is located at the bypass pipe on the inner wall of enmgine exhaust one end, and the spring housing includes spring, passes Lever, and be provided with for the spring to be pressed into the indoor resilient support portion of spring, described drive link one end is fixed on On the end face of the resilient support portion far from the spring housing, the other end is fixed on the sealing plate far from institute across the through-hole On the end face for stating temperature-sensitive room, the cross bar tail end is vertically fixed on the excircle of the drive link, the cross bar with it is described The end face of valve is parallel, and the drive link is parallel with the valve stem.

2. a kind of automatic shunt formula ternary catalyzing unit according to claim 1 is taken over, which is characterized in that the water inlet position In the cooling jacket close to the position of the bypass damper group and the air inlet pipe, the discharge outlet is located at the cooling jacket Position far from the bypass damper group and the air inlet pipe, the water inlet are arranged with the discharge outlet skew symmetry.