CN114614699A - A tail gas treatment system using engine tail gas to generate electricity - Google Patents

Abstract

The invention relates to the technical field of tail gas treatment, in particular to a tail gas treatment system for generating power by utilizing engine tail gas, which comprises a tail gas box arranged at the gas outlet end of an exhaust manifold, wherein one side of the outer part of the tail gas box is provided with a temperature difference power generation mechanism, the hot end of a power generation piece of the temperature difference power generation mechanism is attached to the outer wall of the tail gas box, the cold end of the power generation piece is fixedly provided with a cooling water tank, one side of the cooling water tank is provided with a heat dissipation adjusting unit for adjusting the heat dissipation efficiency of the cooling water tank at the cold end of the power generation piece, the gas outlet pipe of the tail gas box is communicated with a kinetic energy power generation mechanism, and the kinetic energy power generation mechanism forcibly utilizes the kinetic energy of the tail gas to generate power, the maximum utilization rate of the tail gas is realized, and the power generation efficiency of the tail gas is improved.

Description

A tail gas treatment system using engine tail gas to generate electricity

technical field

The invention relates to the technical field of tail gas treatment, in particular to a tail gas treatment system for generating electricity by utilizing engine tail gas.

Background technique

During the driving process of the existing car, only about 25-30% of the energy generated by fuel combustion can be converted into kinetic energy to drive the car, and the remaining 70% of the energy is emitted through exhaust gas (about 40% of the energy is followed by the exhaust gas. Emissions) are dissipated into the atmosphere, causing huge energy loss and serious environmental pollution.

Thermoelectric power generation device is a power generation technology developed based on the Seebeck effect of thermoelectric materials. It connects two different types of thermoelectric materials (P-type is a hole-rich material, N-type is an electron-rich material) at one end. A PN junction is formed, placed in a high temperature state, and the other end is formed at a low temperature. Due to thermal excitation, the hole (electron) concentration at the high temperature end of the P(N) type material is higher than that at the low temperature end. Holes and electrons begin to diffuse to the low temperature end to form an electromotive force, so that the thermoelectric material directly converts the thermal energy input at the high temperature end into electrical energy through the temperature difference between the high and low temperature ends. The automobile exhaust temperature difference power generation system is mainly installed in the position between the three-way catalytic converter and the muffler of the automobile exhaust system. The exhaust gas of the automobile acts as the heat source end and cools the cold end of the thermoelectric power generation device. electrical energy. Thermoelectricity generates electricity through waste heat recovery and can be used to charge the car battery to provide additional power for the car. The thermal energy used by thermoelectric power generation in the actual power generation process only comes from the high-temperature exhaust gas emitted by automobiles. Therefore, the automobile exhaust gas temperature difference power generation system not only plays an important role in reducing automobile fuel consumption, but also plays an important role in reducing exhaust emissions. .

Chinese Patent Application No. "CN201611018399.1" discloses a vehicle exhaust temperature difference power generation system and its cooling method and a method for controlling the exhaust gas flow. The diversion of the exhaust gas, the thermoelectric power generation device generates electricity by forming a temperature difference between the two ends of the thermoelectric power generation material (the hot end formed by the exhaust gas, and the cold end formed by the cooling system cooling the thermoelectric power generation material). Control to realize the cooling of the cold end, and the temperature protection system protects the thermoelectric power generation system when the valve connected to the condenser pipe is fully opened (the electronic control unit controls the closing of the valve connected to the collector). The equipment is mainly used to control the hot end of the thermoelectric power generation device, but the cold end of the thermoelectric power generation device is exposed to the outside, which is greatly affected by the outside temperature. The power generation intensity is different in summer and winter.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide an exhaust gas treatment system that utilizes engine exhaust to generate electricity. This technical solution solves the technical problem of how to make full use of the exhaust to generate electricity and ensure stable power generation when the external temperature changes.

In order to solve the prior art problem, the technical scheme adopted in the present invention is:

An exhaust gas treatment system using engine exhaust to generate electricity, comprising an exhaust box installed at the outlet end of an exhaust manifold, a thermoelectric power generation mechanism is arranged on the outer side of the exhaust box, and the thermoelectric power generation mechanism includes a number of equally spaced power generation sheets, the power generation sheets The hot end of the power generation piece is attached to the outer wall of the exhaust box, the cold end of the power generation piece is fixedly installed with a cooling water tank, and one side of the cooling water tank is provided with a heat dissipation adjustment unit. The outlet pipe of the box is connected to the kinetic energy generating mechanism, and the kinetic energy generating mechanism utilizes the kinetic energy of the exhaust gas to generate electricity.

Preferably, the power generating sheets of the thermoelectric power generation mechanism are connected in series, one end of the power generating sheets is connected with a voltage stabilizer, and the voltage stabilizer is connected with the power collection module.

Preferably, the hot end of the power generation sheet is fixedly adhered to the outer wall of the exhaust box through thermal conductive silicone grease, and the cold end of the power generation sheet is fixedly adhered to the outer wall of the cooling water tank through thermal conductive silicone grease, and the cooling water tank is made of a metal material with good thermal conductivity.

Preferably, the heat dissipation adjustment unit includes a fin-shaped heat sink and a heat-dissipating cover, a plurality of fin-type heat-dissipating fins are installed on the surface of the cooling water tank, the heat-dissipating cover is covered above the side of the exhaust box where the thermoelectric power generation mechanism is arranged, and the heat-dissipating cover is "匚" The upper and both sides of the heat dissipation cover are provided with several air intake grilles distributed at equal intervals, and the two ends of the heat dissipation cover are closed by closing plates.

Preferably, the fin type heat sink is composed of a first fin type heat sink and a second fin type heat sink, the surfaces of the first fin type heat sink and the second fin type heat sink are inclined toward the closing plate, and the first fin type heat sink is inclined toward the closing plate. The fins are horizontally distributed at equal intervals along the length of the cooling water tank, the second fins are arranged between two adjacent first fins, and the first fins are fixed and adhered to the cooling water tank through thermal grease. On the surface, both ends of the second fin-shaped heat sink are provided with connecting pieces, and the connecting pieces are connected to the metal plate arranged inside the heat dissipation cover.

Preferably, the fin-shaped heat sink is made of copper-aluminum alloy material, the inner top of the heat dissipation cover is provided with a number of insert boxes, the insert boxes are respectively arranged on the upper ends of the connecting pieces at both ends of the second fin-type heat sink, and the opening of the insert box is vertically oriented. The metal plate is fixedly installed in the insert box, and the metal plate is an "L"-shaped metal plate.

Preferably, a water pipe connection port is provided on the closing plate, the water pipe connection port is used to avoid a water pipe connected to the cooling water tank, and an electrical connection port is provided on the closing plate, and the electrical connection port is used to avoid the electric wire connected to the voltage stabilizer.

Preferably, at least one installation opening is provided on the closing plate, the installation opening is fixedly installed with a cooling fan, the air outlet end of the cooling fan located at one end of the cooling cover is arranged toward the inside of the cooling cover, and the air intake end of the cooling fan located at the other side of the cooling cover is facing the cooling cover Internal settings.

Preferably, a temperature sensor is fixedly installed on the closing plate, and the signal of the temperature sensor is connected to the control module of the cooling fan.

Preferably, the kinetic energy power generation mechanism includes a processing box, the processing box is connected to the air outlet pipe of the exhaust box through an air inlet on one side, an air outlet is provided on the other side of the processing box, the air inlet and the air outlet are coaxially arranged, and the inside of the processing box is A centrifugal impeller is provided, the rotating shaft of the centrifugal impeller is perpendicular to the axis direction of the air inlet, the centrifugal impeller is driven to rotate by the gas that enters the air inlet to the air outlet, and one end of the centrifugal impeller is connected to the generator, and the generator is arranged outside the processing box .

The beneficial effects of the present application compared to the prior art are:

1. The present invention confluences the exhaust gas in the exhaust manifold through the exhaust box, and the thermoelectric power generation mechanism utilizes a large amount of thermal energy contained in the exhaust gas in the exhaust box, and converts the thermal energy into electrical energy based on the Seebeck effect. The generated kinetic energy is used for power generation. Through the dual utilization of the thermal energy and kinetic energy contained in the exhaust gas, the maximum utilization rate of the exhaust gas is realized, and the power generation efficiency of the exhaust gas is improved.

2. The present invention performs thermoelectric power generation through a plurality of equally spaced power generation sheets, the hot end of the power generation sheet is attached to the outer wall of the exhaust box, the cold end of the power generation sheet is provided with a cooling water tank, and the contact between the power generation sheet and the exhaust box and the cooling water tank The surface is provided with thermal conductive silicone grease for stable and uniform heat conduction, and the heat dissipation adjustment unit makes the surface of the cooling water tank maintain a certain heat dissipation capacity in a low temperature environment such as winter, and the heat dissipation capacity of the surface of the cooling water tank in a high temperature environment in summer It is upgraded to maintain a relatively stable power generation temperature difference, so that the power generation efficiency of the thermoelectric power generation mechanism when in use is kept stable.

3. The present invention speeds up the dissipation of heat by increasing the contact area with the air on the surface of the cooling water tank with multiple groups of fin-type heat sinks arranged at equal intervals. Gravel and other impurities are isolated to avoid damage to the thermoelectric power generation mechanism. The closed plates fixedly installed at both ends of the heat dissipation cover form a cavity in the heat dissipation cover. The air flow of the air grille is taken away, and the air flow rate is relatively stable, and is less affected by external environmental factors.

4. The present invention connects the "L"-shaped metal plate arranged on the top of the heat dissipation cover to the second fin-shaped heat sink, and realizes the principle of thermal expansion and contraction of the metal plate, and the heat dissipation efficiency of the cooling water tank is accelerated when the external temperature is high, When the outside temperature is low, the bottom of the second fin-shaped heat sink is separated from the surface of the cooling water tank, and the heat conduction path between the second fin-shaped heat sink and the cooling water tank is cut off, thereby reducing the heat dissipation efficiency of the surface of the cooling water tank, thereby ensuring power generation throughout the year. The power generation temperature difference between the two ends of the sheet is stable.

5. The present invention strengthens the surface heat dissipation capability of the cooling water tank by means of the cooling fans installed at both ends of the cooling hood. The cooling fan is controlled by a temperature sensor, and the temperature sensor detects the external temperature or the temperature of the cooling liquid in the cooling water tank. When the detected value is higher than the set value, start the cooling fan, and cooperate with the fin-shaped heat sink set inclined to speed up the air flow speed through the surface of the fin-shaped heat sink, so as to realize the adjustment and control of the temperature in the cooling water tank.

Description of drawings

1 is a perspective view of the application;

Fig. 2 is the three-dimensional structure exploded view of the present application;

3 is a perspective view 1 of the thermoelectric power generation mechanism and the heat dissipation adjustment unit of the present application;

FIG. 4 is a second perspective view of the thermoelectric power generation mechanism and the heat dissipation adjustment unit of the present application;

5 is an exploded view of the three-dimensional structure of the thermoelectric power generation mechanism and the heat dissipation adjustment unit of the present application from a first perspective;

6 is a structural exploded view of the thermoelectric power generation mechanism and the heat dissipation adjustment unit of the present application from a second perspective;

7 is a perspective view of the heat dissipation cover of the present application;

Fig. 8 is a partial enlarged view of part A of Fig. 7

9 is a top view of the kinetic energy generating mechanism of the present application;

Figure 10 is a cross-sectional view taken along the line B-B of Figure 9;

The symbols in the figure are:

1 - Exhaust manifold;

2- tail gas box; 2a- air outlet pipe;

3-thermoelectric generating mechanism; 3a-generating sheet; 3a1-stabilizer; 3b-cooling water tank;

4-radiation adjustment unit; 4a-fin type heat sink; 4a1-first fin type heat sink; 4a2-second fin type heat sink; 4a3-connecting piece; Metal plate; 4b3-insert box; 4c-closed plate; 4c1-water pipe connection port; 4c2-electrical connection port; 4c3-installation port; 4d-cooling fan; 4e-temperature sensor;

5-kinetic energy generating mechanism; 5a-processing box; 5a1-air inlet; 5a2-air outlet; 5b-centrifugal impeller; 5c-generator.

Detailed ways

In order to further understand the features, technical means, and specific goals and functions of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 to 5, this application provides:

A tail gas treatment system utilizing engine tail gas to generate electricity, comprising a tail gas box 2 installed at the gas outlet end of an exhaust manifold 1, a thermoelectric power generation mechanism 3 is arranged on the outer side of the tail gas box 2, and the thermoelectric power generation mechanism 3 includes a plurality of equidistantly arranged The power generation sheet 3a, the hot end of the power generation sheet 3a is attached to the outer wall of the exhaust box 2, the cold end of the power generation sheet 3a is fixedly installed with a cooling water tank 3b, and one side of the cooling water tank 3b is provided with a heat dissipation adjustment unit 4, the heat dissipation adjustment unit 4 is used for In order to adjust the heat dissipation efficiency of the cooling water tank 3b at the cold end of the power generation sheet 3a, the outlet pipe 2a of the exhaust box 2 is connected to the kinetic energy generating mechanism 5, and the kinetic energy generating mechanism 5 uses the kinetic energy of the exhaust gas to generate electricity.

Based on the above embodiments, the technical problem to be solved by the present application is how to reasonably utilize the exhaust gas generated by the engine so that it can generate electricity. For this reason, the present application utilizes a large amount of thermal energy contained in the exhaust gas through the thermoelectric power generation mechanism 3, and converts the thermal energy into electrical energy based on the Seebeck effect, and the kinetic energy power generation mechanism 5 generates electricity for the kinetic energy generated when the exhaust gas moves. In this embodiment, the exhaust gas of the exhaust manifold 1 is collected by the exhaust box 2, and the heat in the exhaust gas is concentrated in the exhaust box 2 The outer side of the exhaust box 2 is provided with a plurality of power generating sheets 3a arranged at equal intervals, the hot end of the power generating sheets 3a is attached to the outer wall of the exhaust box 2, and the exhaust gas is concentrated into the exhaust box 2 to make the temperature of the outer wall of the exhaust box 2 The temperature control of the hot end of the power generation sheet 3a is completed by raising the temperature. The cold end of the power generation sheet 3a is provided with a cooling water tank 3b. Each power generation sheet 3a is provided with a separate cooling water tank 3b and communicated. One end of the cooling water tank 3b is provided with a water inlet, and the cooling liquid enters the cooling water tank 3b through the water inlet, and the cooling liquid in the cooling water tank 3b is maintained at a relatively low temperature. The low temperature control of the cold end of the power generation sheet 3a, so as to maintain the power generation temperature difference between the two ends of the power generation sheet 3a. During the power generation process, the temperature of the exhaust gas remains relatively stable during driving with the temperature of the engine, and the hot end temperature of the power generation sheet 3a is less affected by external factors. , the cold end of the power generation sheet 3a is controlled by the heat dissipation adjustment unit 4 to keep the cooling water tank 3b with a relatively stable heat dissipation function. In the high temperature environment in summer, the heat dissipation capacity of the surface of the cooling water tank 3b is improved, so as to maintain a relatively stable power generation temperature difference, so that the power generation efficiency of the thermoelectric power generation mechanism 3 during use is kept stable, and the exhaust gas passing through the thermoelectric power generation mechanism 3 enters the kinetic energy. Processing is performed in the power generation mechanism 5, and the exhaust gas collected through the exhaust manifold 1 contains a large amount of gas impact kinetic energy. The kinetic energy power generation mechanism 5 can utilize the kinetic energy in the exhaust gas to realize the secondary power generation of the exhaust gas, thereby improving the utilization efficiency of the exhaust gas. The tail gas of the kinetic energy power generation mechanism 5 is connected to the exhaust pipe for discharge, and corresponding catalysis and noise reduction processing can be performed during the discharge process. The adjustment unit 4 makes the temperature difference of the thermoelectric power generation mechanism 3 stable when used for a long time, and the power generation amount is more balanced.

Further, as shown in Figure 2 and Figure 5:

The power generation pieces 3a of the thermoelectric power generation mechanism 3 are connected in series, one end of the power generation pieces 3a is connected with a voltage stabilizer 3a1, and the voltage stabilizer 3a1 is connected with an electric energy collection module.

Based on the above embodiments, the technical problem to be solved by the present application is how to make the plurality of power generating sheets 3a generate power stably. For this reason, the application absorbs the heat of the exhaust gas in the exhaust box 2 by attaching the hot ends of the plurality of power generation sheets 3a to the surface of the exhaust box 2, and the staff can design the placement position and quantity of the power generation sheets 3a according to the size of the power generation sheets 3a, The larger the contact area between the power generation sheet 3a and the exhaust box 2, the better the heat absorption effect. Storage and utilization are performed in the electric energy collection module connected to the device 3a1, and the electric energy collection module may be a battery including a booster.

Further, as shown in Figure 2:

The hot end of the power generation sheet 3a is fixedly adhered to the outer wall of the exhaust box 2 through thermal conductive silicone grease, and the cold end of the power generation sheet 3a is fixedly adhered to the outer wall of the cooling water tank 3b through the thermal conductive silicone grease. The cooling water tank 3b is made of a metal material with good thermal conductivity. to make.

Based on the above embodiments, the technical problem to be solved by this application is how to ensure the heat transfer efficiency between the power generation sheet 3 a and the exhaust box 2 . For this reason, in the present application, thermally conductive silicone grease is applied to the contact surface of the hot end of the power generation sheet 3a and the exhaust box 2 for adhesion, and the good thermal conductivity of the thermally conductive silicone grease is used as the heat conduction medium between the exhaust box 2 and the power generation sheet 3a to ensure the exhaust gas. The temperature of the exhaust gas in the box 2 is stably and evenly conducted to the surface of the hot end of the power generation sheet 3a. Similarly, the contact surface of the cold end of the power generation sheet 3a and the cooling water tank 3b is coated with thermally conductive silicone grease for adhesion, so that the cold end of the power generation sheet 3a can always be A uniform temperature is maintained, and a stable power generation temperature difference is formed at the power generation sheet 3a.

Further, as shown in Figure 2 to Figure 5:

The heat dissipation adjustment unit 4 includes a fin-shaped heat sink 4a and a heat dissipation cover 4b. Several fin-shaped heat sinks 4a are installed on the surface of the cooling water tank 3b. The cover 4b is a "scratch" type cover. The upper and both sides of the heat dissipation cover 4b are provided with several air intake grilles 4b1 distributed at equal intervals. Both ends of the heat dissipation cover 4b are closed by closing plates 4c.

Based on the above embodiments, the technical problem to be solved by the present application is how to enhance the heat dissipation efficiency of the surface of the cooling water tank 3b of the thermoelectric power generation mechanism 3 by the heat dissipation adjustment unit 4 . For this reason, the heat dissipation adjustment unit 4 of the present application is composed of a fin-shaped heat sink 4a and a heat dissipation cover 4b, and the surface of the cooling water tank 3b with multiple sets of fin-shaped heat dissipation fins 4a arranged at equal intervals, thereby increasing the heat dissipation area of the cooling water tank 3b, The heat transfer performance of the fin-shaped heat sink 4a is good, which can conduct the rising temperature of the cooling liquid in the cooling water tank 3b, and accelerate the heat dissipation by increasing the contact area with the air. When the air passes through the fin-shaped heat sink 4a, the The resistance is small, and it will not affect the driving of the car. The heat dissipation cover 4b covers the top of the side of the exhaust box 2 where the thermoelectric power generation mechanism 3 is installed. The cover 4b can isolate impurities such as splashed stones and gravel during driving, so as to avoid damage to the thermoelectric power generation mechanism 3. The plurality of air intake grilles 4b1 provided on the heat dissipation cover 4b can maintain the circulation of air, and also limit the fin type. The heat sink 4a is in contact with the air, and the closed plates 4c fixedly installed at both ends of the heat sink 4b form a cavity in the heat sink 4b. The air flow of the grille 4b1 is carried away, and the air flow rate is relatively stable, and is less affected by external environmental factors.

Further, as shown in Figure 5 to Figure 8:

The fin type heat sink 4a is composed of a first fin type heat sink 4a1 and a second fin type heat sink 4a2, and the surfaces of the first fin type heat sink 4a1 and the second fin type heat sink 4a2 are inclined toward the closing plate 4c. The first fin-shaped fins 4a1 are horizontally distributed at equal intervals along the length direction of the cooling water tank 3b, and the second fin-shaped fins 4a2 are arranged between two adjacent first fin-shaped fins 4a1, and the first fin-shaped fins 4a1 pass heat conduction The silicone grease is fixed and adhered to the surface of the cooling water tank 3b. The two ends of the second fin-shaped heat sink 4a2 are provided with connecting pieces 4a3, and the connecting pieces 4a3 are connected to the metal plate 4b2 provided inside the heat dissipation cover 4b.

The fin-shaped heat sink 4a is made of copper-aluminum alloy material, and the inner top of the heat dissipation cover 4b is provided with a number of insert boxes 4b3, the insert boxes 4b3 are respectively arranged on the upper ends of the connecting pieces 4a3 at both ends of the second fin-type heat sink 4a2, and the insert boxes 4b3 The opening is arranged vertically downward, the metal plate 4b2 is fixedly installed in the plug-in box 4b3, and the metal plate 4b2 is an "L"-shaped metal plate.

Based on the above embodiments, the technical problem to be solved by the present application is how to adjust the heat dissipation efficiency of the cooling water tank 3b by the heat dissipation adjustment unit 4 when the external temperature environment changes. For this reason, the fin-shaped heat sink 4a of the present application is composed of a first fin-shaped heat sink 4a1 and a second fin-shaped heat sink 4a2, and the first fin-shaped heat sink 4a1 conducts continuous heat conduction with the surface of the cooling water tank 3b through thermal grease , the second fin type heat sink 4a2 is fixedly installed on the metal plate 4b2 inside the heat dissipation cover 4b through the connecting pieces 4a3 at both ends, and the metal plate 4b2 is fixedly installed in the plug box 4b3 provided inside the heat dissipation cover 4b, and the metal plate 4b2 is vertical Extend downward and bend to a certain extent at the contact position with the connecting piece 4a3 of the second fin-type heat sink 4a2. The metal plate 4b2 has the property of thermal expansion and contraction. When the temperature is high in summer, the vertical direction of the metal plate 4b2 is Part of the length satisfies the contact between the second fin-shaped heat sink 4a2 installed at the bottom of the metal plate 4b2 and the surface of the cooling water tank 3b, thereby increasing the heat dissipation area of the cooling water tank 3b, and accelerating the heat dissipation efficiency of the cooling water tank 3b when the outside temperature is high, and the temperature in winter is lower When the metal plate 4b2 shrinks and drives the bending part to move upward, the bottom of the second fin-shaped heat sink 4a2 is separated from the surface of the cooling water tank 3b, and the heat conduction path between the second fin-shaped heat sink 4a2 and the cooling water tank 3b is cut off, thereby reducing the cooling effect. The heat dissipation efficiency of the surface of the water tank 3b, due to its low external temperature, reducing the heat dissipation efficiency of the cooling water tank 3b will not affect the heat dissipation of the cooling water tank 3b, and the temperature in the cooling water tank 3b in summer is maintained at a similar level, thereby ensuring the power generation sheet. The power generation temperature difference between the two ends of 3a is stable, and the fin-shaped heat sink 4a is made of light-weight copper-aluminum alloy material to ensure that the metal plate 4b2 can drive the second fin-shaped heat sink 4a2 to move. The space between the two adjacent first fin-shaped heat sinks 4a1 also makes the heat dissipation efficiency of the cooling water tank 3b by the heat dissipation adjustment unit 4 change relatively uniformly, so as to ensure the uniform heat dissipation effect in the cooling water tank 3b.

Further, as shown in Figure 7:

The closing plate 4c is provided with a water pipe connection port 4c1, and the water pipe connection port 4c1 is used to avoid the water pipe connected to the cooling water tank 3b, and the closing plate 4c is provided with an electrical connection port 4c2, and the electrical connection port 4c2 is used to avoid the electric wire connected to the voltage stabilizer 3a1. .

Based on the above embodiment, the closing plate 4c of the present application is provided with a water pipe connection port 4c1 and an electrical connection port 4c2 to avoid the cooling water tank 3b connecting the water pipe and the voltage stabilizer 3a1 connecting to the power collection module.

Further, as shown in Figure 7:

The closing plate 4c is provided with at least one mounting port 4c3, the mounting port 4c3 is fixedly installed with the cooling fan 4d, the air outlet end of the cooling fan 4d located at one end of the cooling cover 4b is disposed toward the interior of the cooling cover 4b, and the cooling fan 4d located on the other side of the cooling cover 4b is arranged. The intake end is disposed toward the inside of the heat dissipation cover 4b.

A temperature sensor 4e is fixedly installed on the closing plate 4c, and the temperature sensor 4e is connected to the control module of the cooling fan 4d with a signal.

Based on the above embodiments, the technical problem to be solved by the present application is how to further enhance the heat dissipation efficiency of the cooling water tank 3b when the external temperature is high. To this end, the present application provides a cooling fan 4d at the installation port 4c3 of the closing plate 4c, one end of the cooling fan 4d sucks the outside air into the inside of the cooling cover 4b, and the cooling fan 4d at the other end discharges the air inside the cooling cover 4b to the outside world , so as to form another air flow that is different from the air flow direction formed by the air intake grille 4b1. The inclined surface of the fin-shaped heat sink 4a is set toward the flow direction of the air flow to accelerate the surface speed of the air passing through the fin-shaped heat sink 4a, thereby strengthening the In order to achieve the heat dissipation effect of the fin type heat sink 4a, the heat dissipation fan 4d is controlled by the temperature sensor 4e, the temperature sensor 4e is connected to the control module of the heat dissipation fan 4d, and the temperature sensor 4e detects the external temperature or the temperature of the cooling liquid in the cooling water tank 3b, When the detected value of the temperature sensor 4e is higher than the set value, the cooling fan 4d is activated to speed up the heat dissipation of the 3d0, thereby realizing the adjustment and control of the temperature in the cooling water tank 3b.

Further, as shown in Figure 9 and Figure 10:

The kinetic energy power generation mechanism 5 includes a processing box 5a, the processing box 5a is connected to the air outlet pipe 2a of the exhaust box 2 through an air inlet 5a1 on one side, and an air outlet 5a2 is provided on the other side of the processing box 5a. The air inlet 5a1 and the air outlet 5a2 Coaxially arranged, a centrifugal impeller 5b is arranged in the processing box 5a, the rotation axis of the centrifugal impeller 5b is perpendicular to the axial direction of the air inlet 5a1, the centrifugal impeller 5b is driven to rotate by the gas that enters the air inlet 5a1 and moves to the air outlet 5a2, and the centrifugal impeller 5b rotates. One end of the impeller 5b is connected to a generator 5c, and the generator 5c is provided outside the processing box 5a.

Based on the above embodiments, the technical problem to be solved by the present application is how the kinetic energy generating mechanism 5 utilizes the gas kinetic energy of the exhaust gas to generate electricity. To this end, the present application connects the exhaust pipe 2a of the exhaust box 2 through the treatment box 5a, and the exhaust gas in the exhaust box 2 is merged into the treatment box 5a, and the airflow enters the treatment box 5a. The centrifugal blades of the centrifugal impeller 5b rotate around the axis. , so as to realize the power generation of the generator 5c, and finally the exhaust gas is discharged into the exhaust pipe through the gas outlet 5a2, and the existence of the kinetic energy power generation mechanism 5 reuses a large amount of gas kinetic energy contained in the exhaust gas generated by thermal power generation, which improves the utilization of energy. It also improves the power generation efficiency of tail gas power generation.

The above examples only represent one or several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides an utilize tail gas processing system of engine tail gas electricity generation, a serial communication port, including installing tail gas case (2) of giving vent to anger the end in exhaust manifold (1), outside one side of tail gas case (2) is provided with thermoelectric generation mechanism (3), thermoelectric generation mechanism (3) include a plurality of equidistant electricity generation piece (3a), the hot junction of electricity generation piece (3a) and the laminating of the outer wall of tail gas case (2), the cold junction fixed mounting of electricity generation piece (3a) has coolant tank (3b), one side of coolant tank (3b) is provided with heat dissipation regulating unit (4), heat dissipation regulating unit (4) are used for adjusting the radiating efficiency of coolant tank (3b) of electricity generation piece (3a) cold junction, outlet duct (2a) intercommunication kinetic energy electricity generation mechanism (5) of tail gas case (2), kinetic energy electricity generation mechanism (5) utilize the kinetic energy of tail gas to generate electricity hard.

2. The exhaust gas treatment system for power generation by using engine exhaust gas as claimed in claim 1, wherein the power generating sheets (3a) of the thermoelectric power generating mechanism (3) are connected in series, one end of the power generating sheet (3a) is connected with a voltage stabilizer (3a1), and the voltage stabilizer (3a1) is connected with the power collecting module.

3. The tail gas treatment system for generating power by using the tail gas of the engine as claimed in claim 1, wherein the hot end of the power generation sheet (3a) is fixedly adhered to the outer wall of the tail gas tank (2) through heat-conducting silicone grease, the cold end of the power generation sheet (3a) is fixedly adhered to the outer wall of the cooling water tank (3b) through heat-conducting silicone grease, and the cooling water tank (3b) is made of a metal material with better heat conductivity.

4. The exhaust gas treatment system for power generation by using engine exhaust gas as claimed in claim 1, wherein the heat dissipation regulating unit (4) comprises a plurality of fin-shaped heat dissipating fins (4a) and a heat dissipating cover (4b), the plurality of fin-shaped heat dissipating fins (4a) are mounted on the surface of the cooling water tank (3b), the heat dissipating cover (4b) is covered above the side of the exhaust gas tank (2) where the thermoelectric power generation mechanism (3) is arranged, the heat dissipating cover (4b) is an "Contraband" type cover body, a plurality of air inlet grilles (4b1) are arranged above and at two sides of the heat dissipating cover (4b) and are distributed at equal intervals, and two ends of the heat dissipating cover (4b) are closed by a closing plate (4 c).

5. The exhaust gas treatment system according to claim 4, the cooling structure is characterized in that the fin-shaped cooling fin (4a) comprises a first fin-shaped cooling fin (4a1) and a second fin-shaped cooling fin (4a2), the surfaces of the first fin-shaped cooling fin (4a1) and the second fin-shaped cooling fin (4a2) are obliquely arranged towards the position of a closed plate (4c), the first fin-shaped cooling fin (4a1) is horizontally distributed at equal intervals along the length direction of a cooling water tank (3b), the second fin-shaped cooling fin (4a2) is arranged between every two adjacent first fin-shaped cooling fins (4a1), the first fin-shaped cooling fin (4a1) is fixedly adhered to the surface of the cooling water tank (3b) through heat conduction silicone grease, connecting pieces (4a3) are arranged at two ends of the second fin-shaped cooling fin (4a2), and the connecting pieces (4a3) are connected to a metal plate (4b2) arranged inside a cooling cover (4 b).

6. The exhaust gas treatment system for power generation by using engine exhaust gas as claimed in claim 5, wherein the fin-shaped heat sink (4a) is made of copper-aluminum alloy, the top end of the inside of the heat sink (4b) is provided with a plurality of plug boxes (4b3), the plug boxes (4b3) are respectively arranged at the upper ends of the connecting pieces (4a3) at the two ends of the second fin-shaped heat sink (4a2), the openings of the plug boxes (4b3) are vertically arranged downwards, the metal plate (4b2) is fixedly arranged in the plug boxes (4b3), and the metal plate (4b2) is an "L" -shaped metal plate.

7. The exhaust gas treatment system for power generation by using engine exhaust gas as claimed in claim 4, wherein the closing plate (4c) is provided with a water pipe connector (4c1), the water pipe connector (4c1) is used for avoiding a water pipe connected with the cooling water tank (3b), the closing plate (4c) is provided with an electrical connector (4c2), and the electrical connector (4c2) is used for avoiding an electric wire connected with the voltage stabilizer (3a 1).

8. The exhaust gas treatment system for power generation by using engine exhaust gas as claimed in claim 4, wherein the closing plate (4c) is provided with at least one mounting opening (4c3), the mounting opening (4c3) is fixedly provided with the cooling fan (4d), the air outlet end of the cooling fan (4d) at one end of the cooling cover (4b) is arranged towards the inside of the cooling cover (4b), and the air inlet end of the cooling fan (4d) at the other side of the cooling cover (4b) is arranged towards the inside of the cooling cover (4 b).

9. The exhaust gas treatment system for power generation by using engine exhaust gas as claimed in claim 8, wherein the closing plate (4c) is fixedly provided with a temperature sensor (4e), and the temperature sensor (4e) is in signal connection with a control module of the cooling fan (4 d).

10. The exhaust gas treatment system according to claim 1, the device is characterized in that the kinetic energy power generation mechanism (5) comprises a treatment box (5a), the treatment box (5a) is connected with an air outlet pipe (2a) of the tail gas box (2) through an air inlet (5a1) at one side, an air outlet (5a2) is arranged at the other side of the treatment box (5a), an air inlet (5a1) and an air outlet (5a2) are coaxially arranged, a centrifugal impeller (5b) is arranged in the treatment box (5a), a rotating shaft of the centrifugal impeller (5b) is perpendicular to the axial direction of the air inlet (5a1), the centrifugal impeller (5b) is driven to rotate by air entering the air inlet (5a1) to move towards the air outlet (5a2), one end of the centrifugal impeller (5b) is connected with a power generator (5c), and the power generator (5c) is arranged outside the treatment box (5 a).

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