Gas leakage power generation turbocharger

Abstract

The invention relates to the technical field of internal combustion engines, and discloses a gas leakage power generation turbocharger which comprises an exhaust pipe, a gas flow dispatching box, a power generation waste gas turbine and a supercharging waste gas turbine, and is characterized in that the power generation waste gas turbine and the supercharging waste gas turbine form two sets of turbine systems, and the working states of the turbine systems are adjusted through the gas flow dispatching box. In the low-speed operation stage of the engine, the airflow dispatching box seals a power generation waste gas turbine channel, all engine waste gas enters the supercharging waste gas turbine to be used for improving the air inlet pressure of the engine, and along with the increase of the rotating speed of the engine, the increase of the gas displacement, the increase of the rotating speed of the supercharging waste gas turbine and the increase of the air inlet pressure of the engine; when the air inlet pressure reaches a set value, the trip computer adjusts the airflow dispatching box to achieve engine waste gas shunting, the higher the rotating speed of the engine is, the smaller the amount of shunted gas entering the supercharging waste gas turbine is, the larger the amount of gas entering the power generation waste gas turbine is, and it is guaranteed that the air inlet pressure of the engine is kept at the set value.

Description

Technical Field

[0001] The invention relates to the technical field of internal combustion engines, and in particular to a blow-by gas power generation turbocharger. Background Art

[0002] The turbocharged engine of existing automobiles has two pressure relief valves, one is the pressure relief valve of the intake system, and the other is the pressure relief valve on the turbine. The pressure relief valve of the intake system can work after the driver releases the accelerator pedal. When the accelerator pedal is suddenly released, the throttle valve will maintain a very low opening. However, at this time, the turbine is still compressing air and delivering air to the intake manifold. At this time, the engine does not need so much air, and the opening of the throttle valve has also been reduced. A large amount of air will gather in the intake manifold, causing the pressure in the intake manifold to be too high, or even burst. The intake pressure relief valve can discharge part of the air in the intake manifold, which can prevent the pressure in the intake manifold from being too high. On the other hand, when the engine speed is too high, the speed of the turbine may also increase. When the pressure of the turbine is too high, the pressure relief valve of the turbine will open, so that the exhaust gas can be directly discharged into the exhaust manifold without passing through the turbocharger, so that the pressure of the turbine will not continue to rise.

[0003] Obviously, whether it is releasing air or exhaust gas, it is a waste of exhaust gas energy. Patent 201610586547.3 proposes a method of adding a branch to the compressed air pipe, connecting a generator, and using excess compressed air for power generation to achieve pressure relief energy recovery. From the perspective of energy utilization, compressed air is a form of energy obtained after energy conversion by the turbocharger. There must be losses in the conversion process, so it is more efficient to directly use exhaust gas energy. Second, when the engine runs at high speed and the turbocharger also runs at high speed, the turbine power is high, and there must be an increase in the pressure difference of the turbine outlet channel. At this time, the exhaust back pressure will rise, affecting the engine's working efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a blow-by gas power generation turbocharger.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: The blow-off power generation turbocharger comprises an exhaust pipe, an airflow control box, a power generation exhaust gas turbine and a supercharging exhaust gas turbine. The power generation exhaust gas turbine and the supercharging exhaust gas turbine constitute two turbine systems. The working state of the turbine system is adjusted by the airflow control box. The front end of the airflow control box is a rectangular parallelepiped structure and the rear end is a quadrangular pyramid structure. The exhaust pipe is connected to the air inlet end of the airflow control box. Two connecting pipes are connected to the exhaust gas inlet ends of the power generation exhaust gas turbine and the supercharging exhaust gas turbine. The connecting pipes are connected to the front side of the airflow control box and are fixed.

[0006] As a further solution of the present invention, an isolation plate is fixed on the front side of the interior of the airflow scheduling box and in the middle position, and scheduling plates are rotatably connected to the interior of the airflow scheduling box near the left and right sides. The two scheduling plates can rotate between the isolation plate and one side of the interior of the airflow scheduling box. The two scheduling plates and the isolation plate cooperate to form two airflow channels inside the airflow scheduling box, and the two connecting pipes are respectively connected to the two airflow channels.

[0007] As a further solution of the present invention, a connecting gear is fixed to the top of the scheduling plate, and two driving racks are arranged on the top surface of the airflow scheduling box, and the driving racks are meshed with the connecting gear.

[0008] As a further solution of the present invention, a sliding hole is provided at one end of the driving rack, a buffer rod is slidably arranged inside the sliding hole, a first movable hinge is fixed to the front end of the buffer rod, the top surface of the airflow dispatching box is rotatably connected to the driving rod, and the front end of the first movable hinge is fixed to the rear end of the driving rod.

[0009] As a further solution of the present invention, a second movable hinge is fixed to the rear side of the driving rod near the right side, a hydraulic rod is fixed to the top surface of the airflow control box, and one end of the telescopic rod of the hydraulic rod is fixed to the rear end of the second movable hinge.

[0010] As a further solution of the present invention, the hydraulic lever is controlled by an on-board computer, and the on-board computer adjusts the ratio of the exhaust gas volume entering the two turbine systems according to the engine intake pressure.

[0011] As a further solution of the present invention, the blowdown power generation turbocharger does not release any compressed air and exhaust gas during the entire operation process.

[0012] As a further scheme of the present invention, support frames are fixed on the top surface of the airflow scheduling box near the left and right sides, and the inner bottom surface and the bottom surface of the support frame are rotatably connected to two support rollers, and the four support rollers are respectively fitted with the top surface and the bottom surface of the driving rack, and the top surface of the airflow scheduling box is rotatably connected to the first support roller near the left and right sides, and the first support roller corresponds to the connecting gear on the left and right sides, and the first support roller is fitted with the side of the driving rack away from the teeth, and the top surface of the airflow scheduling box is also rotatably connected to the support gear and the second support roller near the left and right sides, and the support gear and the second support roller have corresponding positions and functions, the support gear is meshed with the driving rack, and the second support roller is fitted with the side of the driving rack away from the teeth.

[0013] As a further solution of the present invention, a protective shell is fixed to the top surface of the airflow scheduling box.

[0014] As a further solution of the present invention, the top surface of the protective shell is detachably connected with an inspection cover via bolts and nuts.

[0015] Compared with the prior art, the present invention has the following beneficial effects: During the engine's low-speed operation, the airflow dispatch box closes the generator exhaust gas turbine channel, and all engine exhaust gas enters the supercharged exhaust gas turbine to increase the engine's intake pressure. As the engine speed increases, the exhaust volume increases, the supercharged exhaust gas turbine speed increases, and the engine intake pressure increases. When the intake pressure reaches the set value, the on-board computer adjusts the airflow dispatch box to divert the engine exhaust gas. The higher the engine speed, the less air is diverted into the supercharged exhaust gas turbine, and the more air enters the generator exhaust gas turbine, ensuring that the engine intake pressure maintains the set value.

[0016] When the engine throttle is released and no power input is needed, the airflow control box shuts down the supercharged exhaust gas turbine, and all the exhaust gas enters the power generation exhaust gas turbine. The engine speed is rapidly reduced, and the deceleration lag of the turbine is improved.

[0017] The exhaust gas power generation turbocharger does not release any engine exhaust gas and compressed air at any working stage, so that the energy utilization ratio is high. In addition, the present invention directly utilizes the exhaust gas energy, reduces the intermediate conversion links, has a small increase in the exhaust back pressure of the high-speed engine, and has better overall performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of the blow-by gas power generation turbocharger proposed by the present invention; Figure 2 This is a schematic diagram of the three-dimensional disassembled structure of the blow-by gas power generation turbocharger proposed by the present invention; Figure 3 A schematic diagram of the three-dimensional structure of the airflow dispatching box of the blow-by power generation turbocharger proposed by the present invention; Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of an airflow dispatch box of a blowdown power generation turbocharger proposed by the present invention; Figure 5 for Figure 4 A is an enlarged schematic diagram of the local three-dimensional structure; Figure 6 A schematic diagram of the three-dimensional structure of the isolation plate of the blow-by power generation turbocharger proposed by the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the protective shell of the blow-down power generation turbocharger proposed by the present invention.

[0019] In the figure: 1. exhaust pipe; 2. air flow dispatch box; 201. isolation plate; 202. dispatching plate; 203. connecting gear; 204. driving rack; 206. buffer rod; 207. first movable hinge; 208. driving rod; 209. second movable hinge; 210. hydraulic rod; 3. power generation exhaust gas turbine; 4. supercharging exhaust gas turbine; 5. connecting pipe; 6. support frame; 601. support roller; 602. first support roller; 603. support gear; 604. second support roller; 7. protective shell; 701. inspection cover. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1-Figure 4As shown, an exhaust pipe 1, an airflow scheduling box 2, a power generation exhaust gas turbine 3 and a supercharged exhaust gas turbine 4, the power generation exhaust gas turbine 3 and the supercharged exhaust gas turbine 4 form two turbine systems, and the working state of the turbine system is adjusted by the airflow scheduling box 2. The front end of the airflow scheduling box 2 is a rectangular parallelepiped structure and the rear end is a quadrangular pyramid structure. The exhaust pipe 1 is connected to the air inlet end of the airflow scheduling box 2, and the exhaust gas inlet ends of the power generation exhaust gas turbine 3 and the supercharged exhaust gas turbine 4 are connected to two connecting pipes 5. The connecting pipe 5 is connected to the front side of the airflow scheduling box 2 and is fixed. When the engine is running at a low speed, the airflow scheduling box 2 closes the channel of the power generation exhaust gas turbine 3, and all the engine exhaust gas enters the supercharged exhaust gas turbine 4 to increase the engine intake pressure. As the engine speed increases, the exhaust volume increases, the speed of the supercharged exhaust gas turbine 4 increases, and the engine intake pressure increases. When the intake pressure reaches the set value, the on-board computer adjusts the airflow scheduling box 2 to realize the diversion of the engine exhaust gas. The higher the engine speed, the less air is diverted into the supercharged exhaust gas turbine 4, and the more air is diverted into the power generation exhaust gas turbine 3, ensuring that the engine intake pressure maintains the set value. When the engine throttle is released and no power input is required, the airflow scheduling box 2 closes the supercharged exhaust gas turbine 4, and all the exhaust gas enters the power generation exhaust gas turbine 3, the engine speed decreases rapidly, and the deceleration hysteresis of the turbine is improved. The blow-off power generation turbocharger does not discharge any engine exhaust gas and compressed air at any working stage, and the energy utilization ratio is high.

[0024] like Figure 2-Figure 5 As shown, in this embodiment, an isolation plate 201 is fixed at the middle position on the inner front side of the airflow scheduling box 2, and scheduling plates 202 are rotatably connected to the inner side of the airflow scheduling box 2 near the left and right sides. The two scheduling plates 202 can rotate between the isolation plate 201 and one side of the inner side of the airflow scheduling box 2. The two scheduling plates 202 cooperate with the isolation plate 201 to form two airflow channels inside the airflow scheduling box 2. The two connecting pipes 5 are respectively connected to the two airflow channels. The two scheduling plates 202 are driven to block the airflow channels inside the airflow scheduling box 2, thereby controlling the exhaust gas discharged into the power generation exhaust gas turbine 3 and the supercharging exhaust gas turbine 4.

[0025] like Figure 2-Figure 5 As shown, in this embodiment, a connecting gear 203 is fixed to the top of the scheduling plate 202, and two driving racks 204 are provided on the top surface of the airflow scheduling box 2. The driving racks 204 are meshed with the connecting gears 203. When the driving racks 204 move laterally, the connecting gears 203 and the scheduling plate 202 can be driven to rotate and the airflow channels of the power generation exhaust gas turbine 3 and the supercharging exhaust gas turbine 4 can be blocked.

[0026] like Figure 3-Figure 6As shown, in this embodiment, the sliding of the driving rack 204 is provided with a buffer rod 206, and the front end of the buffer rod 206 is fixed with a first movable hinge 207. The top surface of the airflow dispatching box 2 is rotatably connected with a driving rod 208. The front end of the first movable hinge 207 is fixed to the rear end of the driving rod 208. When the driving rod 208 rotates left and right, the two buffer rods 206 can be pushed and pulled respectively. When the driving rod 208 rotates and pushes the buffer rod 206 on one side, the buffer rod 206 pushes the driving rack. 204 moves and causes the connecting gear 203 and the scheduling plate 202 to rotate to block the airflow channel, while the buffer rod 206 on the other side is pulled. At this time, the thrust of the buffer rod 206 and the driving rack 204 disappears. At this time, the airflow squeezes and breaks the blockage of the airflow channel by the scheduling plate 202 and causes the connecting gear 203 to rotate, causing the driving rack 204 to move horizontally and fit with the end of the buffer rod 206, thereby completing the closure of one of the airflow channels and blocking the other airflow channel, and vice versa.

[0027] like Figure 3-Figure 6 As shown, in this embodiment, a second movable hinge 209 is fixed to the rear side of the driving rod 208 near the right side, and a hydraulic rod 210 is fixed to the top surface of the airflow dispatching box 2. One end of the telescopic rod of the hydraulic rod 210 is fixed to the rear end of the second movable hinge 209. The hydraulic rod 210 can push and pull the driving rod 208 to rotate left and right to open and close the two airflow channels.

[0028] like Figure 3-Figure 7 As shown, in this embodiment, the hydraulic rod 210 is controlled by the on-board computer, and the on-board computer adjusts the ratio of the exhaust gas volume entering the two turbine systems according to the engine intake pressure.

[0029] like Figure 4-Figure 7As shown, in this embodiment, the top surface of the airflow dispatching box 2 is fixed with a support frame 6 near the left and right sides, and the inner bottom surface and the bottom surface of the support frame 6 are rotatably connected to two support rollers 601, and the four support rollers 601 are respectively fitted with the top surface and the bottom surface of the driving rack 204, and the top surface of the airflow dispatching box 2 is rotatably connected to the first support roller 602 near the left and right sides, and the first support roller 602 corresponds to the connecting gear 203 on the left and right, and the first support roller 602 is fitted with the side of the driving rack 204 away from the teeth, and the top surface of the airflow dispatching box 2 is also rotatably connected to the support gear 6 near the left and right sides. 03 and the second support roller 604, the support gear 603 and the second support roller 604 have corresponding positions and functions, the support gear 603 is meshed with the drive rack 204, the second support roller 604 is in contact with the side of the drive rack 204 away from the teeth, and the support roller 601 can support and limit the top and bottom surfaces of the drive rack 204. The first support roller 602, the second support roller 604, the support gear 603 and the connecting gear 203 can support the left and right sides of the drive rack 204, thereby ensuring that the drive rack 204 is more stable when moving horizontally.

[0030] like Figure 4-Figure 7 As shown, in this embodiment, a protective shell 7 is fixed to the top surface of the airflow dispatching box 2, and the protective shell 7 can protect the hydraulic rod 210 and other structures.

[0031] like Figure 4-Figure 7 As shown, in this embodiment, the top surface of the protective shell 7 is detachably connected with an inspection cover 701 through bolts and nuts, and the internal structure of the protective shell 7 can be easily inspected by removing the inspection cover 701.

[0032] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: during the low-speed operation stage of the engine, the airflow scheduling box 2 closes the channel of the power generation exhaust gas turbine 3, and all the engine exhaust gas enters the supercharged exhaust gas turbine 4 to increase the engine intake pressure. As the engine speed increases, the exhaust volume increases, the speed of the supercharged exhaust gas turbine 4 increases, and the engine intake pressure increases. When the intake pressure reaches the set value, the driving computer adjusts the airflow scheduling box 2 to achieve the diversion of the engine exhaust gas. The higher the engine speed, the less air is diverted into the supercharged exhaust gas turbine 4, and the more air enters the power generation exhaust gas turbine 3, ensuring that the engine intake pressure maintains the set value. When the engine throttle is released and no power input is required, the airflow scheduling box 2 closes the supercharged exhaust gas turbine 4, and all the exhaust gas enters the power generation exhaust gas turbine 3. The engine speed is rapidly reduced, and the deceleration hysteresis of the turbine is improved. The air-released power generation turbocharger does not discharge any engine exhaust gas and compressed air at any working stage, and the energy utilization ratio is high. In addition, the present invention directly utilizes exhaust gas energy, reduces intermediate conversion links, reduces the increase in exhaust back pressure of high-speed engine, and has better overall efficiency. By starting the hydraulic rod 210, the drive rod 208 can be pushed and pulled to rotate left and right. When the drive rod 208 rotates left and right, the two buffer rods 206 can be pushed and pulled respectively. When the drive rod 208 rotates and pushes the buffer rod 206 on one side, the buffer rod 206 pushes the drive rack 204 to move and causes the connecting gear 203 and the scheduling plate 202 to rotate to block the airflow channel, while the buffer rod 206 on the other side is pulled. At this time, the action of the buffer rod 206 and the thrust of the drive rack 204 disappear. At this time, the airflow squeezes and breaks the blockage of the airflow channel by the scheduling plate 202 and causes the connecting gear 203 to rotate, so that the drive rack 204 moves horizontally and fits with the end of the buffer rod 206. The protective shell 7 can protect the hydraulic rod 210 and other structures, and the structure inside the protective shell 7 is convenient for inspection by removing the inspection cover 701.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A blowdown power generation turbocharger, comprising an exhaust pipe (1), an air flow control box (2), a power generation exhaust gas turbine (3) and a supercharger exhaust gas turbine (4), characterized in that: The power generation exhaust gas turbine (3) and the supercharged exhaust gas turbine (4) form two turbine systems. The working state of the turbine system is adjusted by an airflow adjustment box (2). The front end of the airflow adjustment box (2) is a rectangular parallelepiped structure and the rear end is a quadrangular pyramid structure. The exhaust pipe (1) is connected to the air inlet end of the airflow adjustment box (2). The exhaust gas inlet ends of the power generation exhaust gas turbine (3) and the supercharged exhaust gas turbine (4) are connected to two connecting pipes (5). The connecting pipes (5) are connected to and fixed to the front side of the airflow adjustment box (2).

2. The blow-down turbocharger according to claim 1, characterized in that: An isolation plate (201) is fixed at the middle position of the front side of the airflow dispatching box (2), and dispatching plates (202) are rotatably connected to the inside of the airflow dispatching box (2) near the left and right sides. The two dispatching plates (202) can rotate between the isolation plate (201) and one side of the inside of the airflow dispatching box (2). The two dispatching plates (202) cooperate with the isolation plate (201) to form two airflow channels inside the airflow dispatching box (2), and the two connecting pipes (5) are respectively connected to the two airflow channels.

3. The blow-down turbocharger according to claim 2, characterized in that: A connecting gear (203) is fixed to the top of the scheduling plate (202), and two driving racks (204) are arranged on the top surface of the airflow scheduling box (2), and the driving racks (204) are meshed with the connecting gear (203).

4. The blow-down turbocharger according to claim 3, characterized in that: A sliding hole (205) is formed at one end of the driving rack (204), a buffer rod (206) is slidably arranged inside the sliding hole (205), a first movable hinge (207) is fixed to the front end of the buffer rod (206), a driving rod (208) is rotatably connected to the top surface of the airflow dispatching box (2), and the front end of the first movable hinge (207) is fixed to the rear end of the driving rod (208).

5. The blow-down turbocharger according to claim 4, characterized in that: A second movable hinge (209) is fixed to the rear side of the driving rod (208) near the right side, a hydraulic rod (210) is fixed to the top surface of the airflow dispatching box (2), and one end of the telescopic rod of the hydraulic rod (209) is fixed to the rear end of the second movable hinge (209).

6. The blow-down turbocharger according to claim 5, characterized in that: The hydraulic rod (209) is controlled by an on-board computer, which adjusts the ratio of the exhaust gas volume entering the two turbine systems according to the engine intake pressure.

7. The blow-down turbocharger according to claim 6, characterized in that: A support frame (3) is fixed to the top surface of the airflow dispatching box (2) near the left and right sides. The inner bottom surface and the bottom surface of the support frame (3) are both rotatably connected to two support rollers (301). The four support rollers (301) are respectively fitted with the top surface and the bottom surface of the driving rack (204). The top surface of the airflow dispatching box (2) is rotatably connected to the first support roller (302) near the left and right sides. The first support roller (302) corresponds to the connecting gear (203) on the left and right sides. The first support roller (302) fits with the side of the driving rack (204) away from the teeth. The top surface of the airflow dispatching box (2) is also rotatably connected to the support gear (303) and the second support roller (304). The support gear (303) and the second support roller (304) have corresponding positions and functions. The support gear (303) meshes with the driving rack (204). The second support roller (304) fits with the side of the driving rack (204) away from the teeth.

8. The blow-down turbocharger according to claim 7, characterized in that: A protective shell (4) is fixed on the top surface of the airflow dispatching box (2).

9. The blow-down turbocharger according to claim 8, characterized in that: The top surface of the protective shell (4) is detachably connected to an inspection cover (401) via bolts and nuts.

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