A hydrogen and diesel dual-fuel generator set

Abstract

The present invention discloses a hydrogen and diesel dual-fuel generator set, including a chassis, an engine is arranged on the chassis, the engine is connected with a radiator and a brushless generator, a control box is arranged on the brushless generator, the engine includes a diesel feed system, a hydrogen intake system, an air intake system, an exhaust system and a control system, the hydrogen intake system and the air intake system are connected with the cylinder intake port of the engine, and the exhaust system is connected with the exhaust port of the cylinder of the engine. Hydrogen is used to effectively replace diesel fuel, reduce pollution, ensure sufficient fuel supply, and provide a new option for industrial power energy utilization. At the same time, due to the fast combustion speed of hydrogen, the mixed diesel fuel is more fully burned, the fuel utilization rate is improved, and carbon deposition is reduced. By setting a hydrogen intake rail, an embedded hydrogen injection pipe, a hydrogen electronically controlled injection valve and realizing direct injection of hydrogen into the cylinder, the hydrogen intake amount is automatically controlled.

Description

Technical Field

[0001] The invention relates to a dual-fuel generator set, in particular to a hydrogen and diesel dual-fuel generator set. Background Art

[0002] Generators are widely used in industrial and agricultural production, national defense, science and technology, and daily life. There are many types of generators, which can be divided into steam turbine generators, hydroelectric generators, diesel generators, gasoline generators, etc. According to the generation method, the diesel generator converts the energy of diesel into electrical energy by driving the generator through a diesel engine. In the cylinder of the diesel engine, the mixed gas burns violently and the volume expands rapidly, pushing the piston downward to do work. The thrust acting on the piston is converted into a force that drives the crankshaft to rotate through the connecting rod, thereby driving the crankshaft to rotate. By installing the brushless synchronous AC generator coaxially with the crankshaft of the power machine, the rotation of the power machine can be used to drive the rotor of the generator. Using the principle of electromagnetic induction, the generator will output an induced electromotive force, and current can be generated through a closed load circuit. Although the diesel generator set has high power, it has a high fuel consumption rate and serious exhaust emission pollution. A large amount of NO will be generated after the diesel is burned. X And particulate matter, carbon dioxide, cause serious pollution to the atmosphere. At the same time, based on the working characteristics of diesel engines, the efficiency of diesel generator sets is generally low, and the energy utilization rate is usually between 30-38%, which to some extent causes a waste of energy utilization. Summary of the invention

[0003] The purpose of the present invention is to provide a hydrogen and diesel dual-fuel generator set to solve the technical problems of serious pollution and low utilization rate of existing diesel generator sets.

[0004] The purpose of the present invention is achieved through the following technical solutions, in order to solve the above technical problems, a hydrogen and diesel dual-fuel generator set, including a chassis, an engine is arranged on the chassis, the engine is connected with a radiator and a brushless generator, a control box is arranged on the brushless generator, the engine includes a diesel feed system, a hydrogen intake system, an air intake system, an exhaust system and a control system, the hydrogen intake system and the air intake system are connected to the cylinder intake port of the engine, and the exhaust system is connected to the exhaust port of the cylinder of the engine;

[0005] The hydrogen intake system comprises a hydrogen storage tank, a hydrogen intake pipeline, a hydrogen intake rail and a hydrogen injection pipe. The hydrogen storage tank is connected to the hydrogen intake rail via the hydrogen intake pipeline. The hydrogen intake pipeline is provided with a hydrogen valve group. The hydrogen intake rail is connected to a hydrogen injection pipe. The hydrogen injection pipe is provided with a hydrogen electronically controlled injection valve. The hydrogen injection pipe is connected to the cylinder intake port. The hydrogen valve group and the hydrogen electronically controlled injection valve are connected to a control system.

[0006] Furthermore, the hydrogen valve group includes a pressure reducing valve, a pressure gauge, a solenoid valve, a hydrogen filter and a flame arrester which are sequentially arranged on the intake pipeline along the intake direction.

[0007] Furthermore, the shape of the hydrogen injection pipe is a bent pipe, the end of the hydrogen injection pipe is aligned with the cylinder valve throat through the cylinder intake manifold, and after the hydrogen electronically controlled injection valve is opened, hydrogen is ejected from the hydrogen injection pipe directly into the cylinder to realize direct injection into the cylinder.

[0008] Furthermore, the diesel fuel system includes a diesel tank, a diesel feed pipe, a diesel injection pump and a diesel injector. The diesel tank is connected to the diesel injection pump through a diesel feed pipe. The diesel feed pipe is provided with a diesel filter and a diesel booster pump. The diesel injection pump is connected to the diesel injector. The diesel injector is provided with a diesel electronically controlled injection valve. The diesel injector is arranged on the cylinder head to inject diesel into the cylinder. The diesel injection pump, diesel booster pump and diesel electronically controlled injection valve are connected to a control system.

[0009] Furthermore, the air intake system includes an air intake duct, which is provided with an air filter, a supercharger, an intercooler and an air intake valve connected to the control system in sequence along the intake direction, and the air intake duct is connected to the cylinder intake manifold of the engine.

[0010] Furthermore, the exhaust system includes an EGR exhaust gas recirculation system, which includes an exhaust gas circulation pipe, an EGR cooler and an EGR electronically controlled valve. The EGR cooler is arranged in the middle of the exhaust gas circulation pipe, and the EGR electronically controlled valve is arranged on the exhaust gas circulation pipe between the EGR cooler and the cylinder intake manifold. The EGR electronically controlled valve and the EGR cooler are connected to the control system.

[0011] Furthermore, an oxygen sensor for collecting oxygen content is provided on the exhaust gas circulation pipeline, and a speed sensor for collecting engine speed is provided inside the engine. The oxygen sensor and the speed sensor are connected to a control system.

[0012] Beneficial effects of the present invention:

[0013] 1. Hydrogen effectively replaces diesel fuel, reduces pollution, ensures sufficient fuel supply, and provides a new option for industrial power energy utilization. At the same time, due to the fast combustion speed of hydrogen, the mixed diesel burns more fully, improves fuel utilization, and reduces carbon deposits. By setting a hydrogen intake rail, an embedded hydrogen injection pipe, a hydrogen electronically controlled injection valve, and realizing direct injection of hydrogen into the cylinder, the hydrogen intake volume is automatically controlled.

[0014] 2. Air, hydrogen and diesel are mixed in the cylinder to control the progress and avoid combustion and explosion of fuel in the intake pipe.

[0015] 3. The exhaust gas in the EGR exhaust gas circulation system is circulated into the cylinder, which increases the inert gas in the cylinder, reduces the combustion rate of hydrogen, effectively avoids the detonation phenomenon, and at the same time, removes NO in the exhaust gas. X and CO produced by the combustion of a small amount of engine oil;

[0016] 4. The oxygen content in the exhaust gas is collected through the control system, and the flow of hydrogen, air and exhaust gas is automatically controlled by controlling the opening of the hydrogen injection valve, air intake control valve and EGR control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the external structure of a hydrogen and diesel dual-fuel generator set of the present invention;

[0018] Figure 2 This is a structural principle diagram of a hydrogen and diesel dual-fuel generator set of the present invention;

[0019] In the figure: 1- chassis; 2- engine; 3- radiator; 4- brushless generator; 5- control box; 6- diesel feed system; 7- hydrogen intake system; 8- air intake system; 9- exhaust system;

[0020] 601-diesel tank; 602-diesel feed pipe; 603-diesel injection pump; 604-diesel injector; 605-diesel filter; 606-diesel booster pump; 607-diesel electronically controlled injection valve;

[0021] 701-hydrogen storage tank; 702-hydrogen intake pipeline; 703-hydrogen intake rail; 704-hydrogen injection pipe; 705-pressure reducing valve; 706-pressure gauge; 707-solenoid valve; 708-hydrogen filter; 709-flame arrester; 710-hydrogen electronically controlled injection valve;

[0022] 801-air intake pipe; 802-air filter; 803-supercharger; 804-intercooler; 805-air intake valve;

[0023] 901-exhaust gas circulation pipe; 902-EGR cooler; 903-EGR electronic control valve; 904-oxygen sensor; 905-speed sensor. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings. Figure 1-2As shown, the technical solution of the present invention to achieve the above purpose is a hydrogen and diesel dual-fuel generator set, including a chassis 1, an engine 2 is arranged on the chassis 1, the engine 2 is connected to a radiator 3 and a brushless generator 4, a control box 5 is arranged on the brushless generator 4, the engine 2 includes a diesel feed system 6, a hydrogen intake system 7, an air intake system 8, an exhaust system 9 and a control system, the hydrogen intake system 7 and the air intake system 8 are connected to the cylinder intake port of the engine 2, and the exhaust system 9 is connected to the exhaust port of the cylinder of the engine 2;

[0025] The hydrogen intake system 7 includes a hydrogen storage tank 701, a hydrogen intake pipeline 702, a hydrogen intake rail 703 and a hydrogen injection pipe 704. The hydrogen storage tank 701 is connected to the hydrogen intake rail 703 through the hydrogen intake pipeline 702. The hydrogen intake pipeline 702 is provided with a hydrogen valve group, which includes a pressure reducing valve 705, a pressure gauge 706, a solenoid valve 707, a hydrogen filter 708 and a flame arrester 709 which are sequentially arranged on the intake pipeline along the intake direction. The hydrogen intake rail 703 is connected to a hydrogen injection pipe 704, on which a hydrogen electronically controlled injection valve 710 is disposed. The hydrogen injection pipe 704 is in the shape of a bent pipe, and the end of the hydrogen injection pipe 704 is aligned with the throat of the cylinder valve through the cylinder intake manifold. After the hydrogen electronically controlled injection valve 710 is opened, hydrogen is ejected from the hydrogen injection pipe 704 directly into the cylinder to realize direct injection in the cylinder. The hydrogen valve group and the hydrogen electronically controlled injection valve 710 are connected to the control system.

[0026] The diesel fuel system 6 includes a diesel tank 601, a diesel feed pipe 602, a diesel injection pump 603 and a diesel injector 604. The diesel tank 601 is connected to the diesel injection pump 603 through the diesel feed pipe 602. The diesel feed pipe 602 is provided with a diesel filter 605 and a diesel booster pump 606. The diesel injection pump 603 is connected to a diesel injector 607. The diesel injector 607 is provided with a diesel electronically controlled injection valve 608. The diesel injector 607 is arranged on the cylinder head to inject diesel into the cylinder. The diesel injection pump 60, the diesel booster pump 606 and the diesel electronically controlled injection valve 608 are connected to the control system.

[0027] The air intake system 8 includes an air intake duct 801, which is provided with an air filter 802, a supercharger 803, an intercooler 804 and an air intake valve 805 connected to the control system in sequence along the intake direction, and the air intake duct 801 is connected to the cylinder intake manifold of the engine.

[0028] The exhaust system 9 includes an EGR exhaust gas recirculation system, which includes an exhaust gas circulation pipeline 901, an EGR cooler 902 and an EGR electronically controlled valve 903. The EGR cooler 902 is arranged in the middle of the exhaust gas circulation pipeline 901, and the EGR electronically controlled valve 903 is arranged on the exhaust gas circulation pipeline 901 between the EGR cooler 902 and the cylinder intake manifold. The EGR electronically controlled valve 903 and the EGR cooler 902 are connected to the control system. An oxygen sensor 904 for collecting oxygen content is arranged on the exhaust gas circulation pipeline 901, and a speed sensor 905 for collecting engine speed is arranged inside the engine. The oxygen sensor 904 and the speed sensor 905 are connected to the control system.

[0029] When the engine is working, air is first added to the cylinder, the piston moves upward, the air is compressed, and diesel is injected through the diesel injector 607. Due to the high heat generated by air compression, the injected atomized diesel mixes with the air and ignites and burns on its own, igniting the directly injected hydrogen. When the piston passes the top dead center, the gas pressure and temperature in the cylinder rise sharply. Under the action of the high-temperature and high-pressure fuel gas, the piston pushes the piston downward to perform work. The thrust acting on the piston is converted into a force that drives the crankshaft to rotate through the connecting rod, thereby driving the crankshaft to rotate. The brushless synchronous AC generator is coaxially installed with the crankshaft of the power machine, and the rotation of the power machine is used to drive the rotor of the generator. Using the principle of electromagnetic induction, the generator will output an induced electromotive force, which can generate current through a closed load circuit. The control system transmits the data of oxygen content and engine speed collected by oxygen sensor 904 and speed sensor 905 to the control system. The control system automatically controls the flow of hydrogen, diesel, air and exhaust gas by controlling the opening of hydrogen electronically controlled injection valve 710, diesel electronically controlled control valve 608, air intake valve 805 and EGR electronically controlled valve 903. Part of the exhaust gas in the first pipeline enters EGR cooler 902, and after cooling and recovering the water vapor, it enters the cylinder through exhaust gas circulation pipeline 901, adding inert gas in the cylinder, reducing the combustion speed of hydrogen, and effectively avoiding the occurrence of knock during hydrogen combustion.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation on the present invention.

[0031] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A hydrogen and diesel dual-fuel generator set, comprising a chassis, an engine is arranged on the chassis, the engine is connected to a radiator and a brushless generator, a control box is arranged on the brushless generator, characterized in that: The engine comprises a diesel feed system, a hydrogen intake system, an air intake system, an exhaust system and a control system. The hydrogen intake system and the air intake system are connected to the cylinder intake port of the engine, and the exhaust system is connected to the exhaust port of the cylinder of the engine; the hydrogen intake system comprises a hydrogen storage tank, a hydrogen intake pipeline, a hydrogen intake rail and a hydrogen injection pipe. The hydrogen storage tank is connected to the hydrogen intake rail through the hydrogen intake pipeline. A hydrogen valve group is provided on the hydrogen intake pipeline. The hydrogen intake rail is connected to a hydrogen injection pipe. A hydrogen electronically controlled injection valve is provided on the hydrogen injection pipe. The hydrogen injection pipe is connected to the cylinder intake port. The hydrogen valve group and the hydrogen electronically controlled injection valve are connected to the control system; The hydrogen valve group includes a pressure reducing valve, a pressure gauge, a solenoid valve, a hydrogen filter and a flame arrester which are sequentially arranged on the intake pipeline along the intake direction; The shape of the hydrogen injection pipe is a bent pipe, the end of which is aligned with the cylinder valve throat through the cylinder intake manifold, and after the hydrogen electronically controlled injection valve is opened, hydrogen is ejected from the hydrogen injection pipe directly into the cylinder to realize direct injection in the cylinder; The diesel feed system includes a diesel tank, a diesel feed pipeline, a diesel injection pump and a diesel injector. The diesel tank is connected to the diesel injection pump through the diesel feed pipeline. The diesel feed pipeline is provided with a diesel filter and a diesel booster pump. The diesel injection pump is connected to the diesel injector. The diesel injector is provided with a diesel electronically controlled injection valve. The diesel injector is arranged on the cylinder head and injects diesel into the cylinder. The diesel injection pump, the diesel booster pump and the diesel electronically controlled injection valve are connected to a control system.

2. A hydrogen and diesel dual-fuel generator set according to claim 1, characterized in that: The air intake system includes an air intake duct, which is provided with an air filter, a supercharger, an intercooler and an air intake valve connected to the control system in sequence along the air intake direction, and the air intake duct is connected to the cylinder intake manifold of the engine.

3. A hydrogen and diesel dual-fuel generator set according to claim 2, characterized in that: The exhaust system includes an EGR exhaust gas recirculation system, which includes an exhaust gas circulation pipe, an EGR cooler and an EGR electronically controlled valve. The EGR cooler is arranged in the middle of the exhaust gas circulation pipe, and the EGR electronically controlled valve is arranged on the exhaust gas circulation pipe between the EGR cooler and the cylinder intake manifold. The EGR electronically controlled valve and the EGR cooler are connected to a control system.

4. A hydrogen and diesel dual-fuel generator set according to claim 3, characterized in that: An oxygen sensor for collecting oxygen content is arranged on the exhaust gas circulation pipeline, and a speed sensor for collecting engine speed is arranged inside the engine. The oxygen sensor and the speed sensor are connected to a control system.

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