Hydrogen and methanol integrated ejector

Abstract

The invention aims to provide a hydrogen and methanol integrated ejector, and belongs to the field of ejectors. Comprising a two-way electromagnetic valve control assembly which comprises a hydrogen inlet control valve, a mixed fluid injection control valve and control armatures connected with the hydrogen inlet control valve and the mixed fluid injection control valve; the methanol supply control assembly comprises a needle valve body and a methanol inlet reflux block; and the nozzle assembly is mounted below the injector body, and the nozzle assembly comprises a dual-fuel mixing cavity and a nozzle module. The dual-fuel injection mode that hydrogen is used for supporting methanol is utilized, hydrogen and methanol mixed fuel is injected into the air cylinder, large-flow injection of methanol fuel is achieved, the fuel efficiency of methanol is improved, and carbon emission and oil consumption are reduced. In addition, a bidirectional electromagnetic valve cooperative control mode is adopted, rapid mixing of double fuels is achieved, and the injection process is more accurate and flexible.

Description

Technical Field

[0001] The present invention relates to an injector, specifically a gas-liquid injector. Background Technology

[0002] Against the backdrop of the current global energy transition, the development and utilization of clean energy are receiving increasing attention. Hydrogen, with its low carbon content and high calorific value, is gradually becoming an important energy choice, while methanol, as a renewable fuel and chemical feedstock, has promising application prospects.

[0003] In existing technologies, hydrogen and methanol injection systems are typically separate, leading to low resource utilization efficiency. Furthermore, different fuels exhibit significant differences in combustion characteristics, injection methods, and equipment adaptability, making it particularly difficult to simultaneously achieve optimal injection conditions for both fuels in the design of the injection device. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated hydrogen and methanol injector that uses a hydrogen-assisted combustion methanol injection mode to achieve high-flow-rate methanol injection.

[0005] The objective of this invention is achieved as follows:

[0006] The present invention provides an integrated hydrogen and methanol injector, characterized in that: it includes a pressure accumulator wall from top to bottom, a two-way solenoid valve control assembly, a methanol supply control assembly, and a nozzle assembly; a hydrogen inlet and a servo oil inlet are respectively provided on the pressure accumulator wall, and a hydrogen pressure accumulator and a servo oil pressure accumulator are provided inside the pressure accumulator wall, with the hydrogen inlet connected to the hydrogen pressure accumulator and the servo oil inlet connected to the servo oil pressure accumulator.

[0007] The bidirectional solenoid valve control assembly includes, from top to bottom, an upper hydrogen supply valve block, an intermediate block, and a lower servo oil control valve block. An H-shaped horizontal block is located within the intermediate block. A hydrogen intake control electromagnet is installed in the upper groove of the H-shaped horizontal block, with a hydrogen intake control electromagnetic coil wound around it. The head of the hydrogen intake control armature extends into the hydrogen intake control electromagnet and is fitted with a hydrogen compression return spring. A servo oil control electromagnet is installed in the lower groove of the H-shaped horizontal block, with a servo oil control electromagnetic coil wound around it. The head of the servo oil control armature extends into the servo oil intake control electromagnet and is fitted with a servo oil compression return spring. An intake control chamber and a servo oil inlet passage are located within the accumulator wall. An intake passage is located within the upper hydrogen supply valve block and connects to the intake control chamber.

[0008] The present invention may also include:

[0009] 1. The methanol supply control assembly includes an upper supply control valve block, a lower supply control valve block, and a needle valve body. The upper and lower supply control valve blocks are arranged from top to bottom. The upper part of the needle valve is located in the upper supply control valve block, and the lower part of the needle valve passes through the lower supply control valve block. The needle valve portion located in the upper supply control valve block is fitted with a control armature and a needle valve body return spring. The needle valve body return spring is located below the control armature. The needle valve portion located in the lower supply control valve block is fitted with a methanol reflux control block and a methanol inlet block. A storage chamber is provided in the methanol inlet block, and a methanol inlet flow path is provided in the lower supply control valve block. A methanol inlet is installed on the upper supply control valve block, and the methanol inlet flow path is connected to the methanol inlet and the storage chamber, respectively. A needle valve body control chamber is provided at the top of the needle valve. A ball valve is provided between the needle valve body control chamber and the servo oil control armature. The needle valve body control chamber is connected to the servo oil inlet passage.

[0010] 2. The nozzle assembly includes a nozzle body, a conical annular valve stem connected to the lower part of the needle valve, the conical annular valve stem being located inside the nozzle body, a mixing chamber being formed between the conical annular valve stem and the nozzle body, the mixing chamber being connected to the storage chamber, a multi-hole nozzle being provided below the nozzle body, the multi-hole nozzle being sealed to the conical annular valve stem, and the air intake passage being connected to the mixing chamber.

[0011] 3. When the servo oil control solenoid coil is not energized, the servo oil enters the bidirectional solenoid valve control assembly from the servo oil accumulator chamber, and then enters the needle valve body control chamber through the servo oil inlet channel. The oil pressure in the needle valve body control chamber increases, and together with the needle valve body return spring, it acts on the needle valve body, keeping the needle valve body stationary. Methanol enters from the methanol inlet, flows through the methanol inlet flow path and storage chamber, and is sprayed out from the methanol nozzle into the mixing chamber, completing the methanol supply. When the hydrogen intake control solenoid coil is energized, the hydrogen intake control electromagnet generates an electromagnetic force that acts on the hydrogen intake control armature. The force acting on the hydrogen intake control armature is a downward pulling force. The control armature overcomes the spring force of the compression return spring and moves downward. The intake control chamber connects the hydrogen accumulator chamber and the intake flow channel. Hydrogen enters the mixing chamber through the intake flow channel, the bidirectional solenoid valve control assembly, the methanol supply control assembly, and the nozzle assembly, and mixes with methanol, completing the hydrogen supply.

[0012] 4. When the servo oil control solenoid coil is energized, the servo oil control electromagnet generates electromagnetic force to attract the servo oil control armature. The servo oil control armature overcomes the spring force of the return spring and moves upward. When the servo oil control armature drives the ball valve to open the servo oil return hole, the servo oil flows out of the needle valve body control chamber through the return channel, and the pressure in the needle valve body control chamber drops. The high-pressure mixed fluid in the mixing chamber exerts an upward force on the needle valve body. When the downward pressure generated in the needle valve body control chamber is less than the resultant force of the needle valve body return spring and the upward force exerted by the high-pressure mixed fluid on the needle valve body, the needle valve body moves upward, and the methanol reflux control block connected to the needle valve body moves upward together. When the methanol reflux control block separates from the methanol inlet block, the methanol reflux control block opens the methanol reflux channel, and methanol flows out through the outlet flow path, stopping the supply of methanol. At the same time, the upward movement of the needle valve body drives the conical annular valve stem to open the multi-hole nozzle, and the mixed fluid in the mixing chamber is sprayed out through the nozzle.

[0013] The advantages of this invention are:

[0014] 1. This invention adopts a two-way solenoid valve coordinated control method, which can realize rapid mixing of two fuels and make the injection process more precise and flexible.

[0015] 2. This invention achieves high-flow-rate injection of methanol fuel by using hydrogen for dual-fluid injection, and ensures the combustion of methanol by using hydrogen to aid combustion.

[0016] 3. The present invention adopts a return oil module structure connected to the needle valve, which enables the methanol fuel supply to be stopped quickly while performing dual fuel injection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a two-way solenoid valve control assembly;

[0019] Figure 3 Schematic diagram of the methanol supply control component;

[0020] Figure 4 This is a schematic diagram of the nozzle assembly structure.

[0021] Reference numerals: 1. Hydrogen accumulator chamber; 2. Hydrogen inlet; 3. Two-way solenoid valve control assembly; 4. Methanol supply control assembly; 5. Servo oil accumulator chamber; 6. Servo oil inlet; 7. Accumulator chamber wall; 8. Methanol inlet; 9. Nozzle assembly; 10. Hydrogen supply upper valve block; 11. Inlet flow channel; 12. Hydrogen inlet control electromagnet; 13. Intermediate block; 14. Servo oil control electromagnet; 15. Servo oil control armature; 16. Ball valve; 17. Hydrogen inlet control armature; 18. Compression return spring. 8; Hydrogen intake control solenoid coil; 19; Servo oil control solenoid coil; 20; Compression return spring; 21; Servo oil inlet channel; 22; Needle valve body control chamber; 23; Intake control chamber; 24; Needle valve body; 25; Control armature; 26; Methanol reflux control block; 27; Methanol inlet block; 28; Mixing chamber; 29; Needle valve body return spring; 30; Methanol inlet flow path; 31; Storage chamber; 32; Methanol nozzle; 33; Nozzle body; 34; Multi-hole nozzle; 35; Conical annular valve stem; 36. Detailed Implementation

[0022] The invention will now be described in more detail with reference to the accompanying drawings:

[0023] Combination Figure 1-4 This invention discloses an integrated hydrogen and methanol injection device, comprising a hydrogen inlet 2 and a servo oil inlet 6. The injector body, from top to bottom, comprises a hydrogen accumulator chamber 1, a servo oil accumulator chamber 5, a bidirectional solenoid valve control assembly 3, and a methanol supply control assembly 4. The bidirectional solenoid valve control assembly includes a hydrogen inlet control valve and a mixed fluid injection control valve, as well as control armatures connected to their respective components. The methanol supply control assembly includes a needle valve control assembly, a methanol inlet pipeline, a methanol inlet 8, and a nozzle assembly 9.

[0024] The bidirectional solenoid valve control assembly 3 includes a hydrogen supply upper valve block 10, an intermediate block 13, and a servo oil control lower valve block. The intermediate block is provided with a hydrogen inlet control armature 17, a compression return spring 18, a hydrogen inlet control solenoid coil 19, a hydrogen inlet control electromagnet 12, a servo oil control electromagnet 14, a servo oil control armature 15, a servo oil control solenoid coil 20, and a compression return spring 21 from top to bottom. An inlet control chamber 24 is provided in the accumulator wall. An inlet flow channel 11 is arranged in the upper valve block and passes through the intermediate block 13 and the servo oil control lower valve block in sequence. The inlet control chamber 24 is connected to the hydrogen accumulator chamber 1 and the inlet flow channel 11 respectively. A needle valve body control chamber 23 is provided at the bottom of the control lower valve block. The servo oil inlet channel 22 passes through the accumulator wall 7, the hydrogen supply upper valve block 10, the intermediate block 13, and the servo oil control lower valve block in sequence. The servo oil inlet channel 22 is connected to the servo oil accumulator chamber 5 and the needle valve body control chamber 23 respectively.

[0025] The methanol supply control assembly 4 includes a supply control upper valve block, a methanol reflux control block 27, a methanol inlet block 28, a mixing chamber 29, a needle valve body 25, a control armature 26, and a methanol nozzle 33. The control upper valve block, methanol reflux control block 27, and methanol inlet block 28 are arranged from top to bottom. The control armature 26 is installed in the supply control upper valve block. The needle valve body 25 passes through the supply control upper valve block, the methanol reflux control block 27, and the methanol inlet block 28 in sequence. The methanol reflux control block 27 is connected to the needle valve body 25. A needle valve body return spring 30 is sleeved on the outside of the needle valve body 25 at the bottom of the control armature 26. A storage chamber 32 is provided in the methanol inlet flow path 31 and the mixing chamber 29 respectively.

[0026] The nozzle assembly 9 includes a nozzle body 34, a conical annular valve stem 36, and a multi-hole nozzle 35. The conical annular valve stem 36 is installed inside the nozzle body 34, and the conical annular valve stem 36 and the nozzle body 34 form a mixing chamber 29. Hydrogen enters the hydrogen accumulator chamber 1 through the hydrogen inlet 2 and then enters the intake control chamber 24 through the intake channel, waiting to be stored in the mixing chamber 29. Servo oil enters the servo oil accumulator chamber 5 through the servo oil inlet 6 and then enters the needle valve body control chamber 23 through the servo oil inlet channel 22.

[0027] When the servo oil control solenoid coil 20 is not energized, the servo oil enters the bidirectional solenoid valve control assembly 3 from the servo oil accumulator chamber 5, and then enters the needle valve body control chamber 23 through the servo oil inlet passage 22. At this time, the oil pressure in the needle valve body control chamber 23 increases, and together with the needle valve body return spring 30, it acts on the needle valve body 25, keeping the needle valve body 25 stationary. At this time, methanol enters from the methanol inlet 8, flows through the methanol inlet flow path 31 and the storage chamber 32, and is sprayed out from the methanol nozzle 33 into the mixing chamber 29, completing the methanol supply. When the hydrogen inlet control solenoid coil 19 is energized... The hydrogen intake control electromagnet 12 generates an electromagnetic force that acts on the hydrogen intake control armature 17. The force acting on the hydrogen intake control armature 17 is a downward pulling force. The control armature 17 moves downward against the spring force of the compression return spring 18. When the control armature 17 moves downward to a certain position, the intake control chamber 24 connects the hydrogen accumulator chamber 1 and the intake channel 11. The hydrogen enters the mixing chamber 29 through the intake channel 11, the bidirectional solenoid valve control component 3, the methanol supply control component 4, and the nozzle component 9, and mixes with the methanol to complete the hydrogen supply.

[0028] When the servo oil control solenoid coil 20 is energized, the servo oil control electromagnet 14 generates an electromagnetic force that attracts the servo oil control armature 15. The servo oil control armature 15 moves upward against the spring force of the return spring 21. When the servo oil control armature 15 drives the ball valve 16 to open the servo oil return port, the servo oil flows out of the needle valve body control chamber 23 through the return channel. The pressure in the needle valve body control chamber 23 continuously decreases. The high-pressure mixed fluid in the mixing chamber 29 exerts an upward force on the needle valve body 25. When the downward pressure generated in the needle valve body control chamber 23 is less than that of the needle valve body return spring 30... When the spring force and the high-pressure mixed fluid exert an upward force on the needle valve body 25, the needle valve body 25 moves upward, and the methanol reflux control block 27 connected to the needle valve body 25 moves upward together. When the methanol reflux control block 27 separates from the methanol inlet block 28, the methanol reflux control block 27 opens the methanol reflux channel, and the methanol flows out through the outlet flow path, stopping the supply of methanol. At the same time, the upward movement of the needle valve body 25 drives the conical annular valve stem 36 to open the multi-hole nozzle 35, and the mixed fluid in the mixing chamber 29 is sprayed out through the nozzle 35, completing the high-flow injection of the mixed fuel.

[0029] This invention employs a dual-fuel injection system combining hydrogen and methanol. A hydrogen injection control valve and a methanol supply control module work together to mix hydrogen and methanol and inject the mixture into the cylinder, achieving high-flow-rate methanol fuel injection. The combustion of methanol is also ensured by the combustion-supporting effect of hydrogen. For methanol injection control, a combined inlet and return fuel module structure is designed. The return fuel module, connected to a needle valve, allows for rapid separation of the return fuel module during rapid hydrogen and methanol dual-fuel injection, thereby stopping the methanol fuel supply. Furthermore, this invention uses a bidirectional solenoid valve for coordinated control, making the pressure at the upper end of the needle valve adjustable, enabling rapid mixing of the two fuels and a more precise and flexible injection process.

Claims

1. An integrated hydrogen and methanol injector, characterized in that: It includes, from top to bottom, a pressure accumulator wall, a two-way solenoid valve control assembly, a methanol supply control assembly, and a nozzle assembly; a hydrogen inlet and a servo oil inlet are respectively provided on the pressure accumulator wall, and a hydrogen pressure accumulator and a servo oil pressure accumulator are provided inside the pressure accumulator wall, with the hydrogen inlet connected to the hydrogen pressure accumulator and the servo oil inlet connected to the servo oil pressure accumulator. The bidirectional solenoid valve control assembly includes, from top to bottom, an upper hydrogen supply valve block, an intermediate block, and a lower servo oil control valve block. An H-shaped horizontal block is located within the intermediate block. A hydrogen intake control electromagnet is installed in the upper groove of the H-shaped horizontal block, with a hydrogen intake control electromagnetic coil wound around it. The head of the hydrogen intake control armature extends into the hydrogen intake control electromagnet and is fitted with a hydrogen compression return spring. A servo oil control electromagnet is installed in the lower groove of the H-shaped horizontal block, with a servo oil control electromagnetic coil wound around it. The head of the servo oil control armature extends into the servo oil intake control electromagnet and is fitted with a servo oil compression return spring. An intake control chamber and a servo oil inlet passage are located within the accumulator wall. An intake passage is located within the upper hydrogen supply valve block and connects to the intake control chamber.

2. The hydrogen and methanol integrated injector according to claim 1, characterized in that: The methanol supply control assembly includes an upper supply control valve block, a lower supply control valve block, and a needle valve body. The upper and lower supply control valve blocks are arranged from top to bottom. The upper part of the needle valve is located in the upper supply control valve block, and the lower part of the needle valve passes through the lower supply control valve block. The needle valve portion in the upper supply control valve block is fitted with a control armature and a needle valve body return spring, which is located below the control armature. The needle valve portion in the lower supply control valve block is fitted with a methanol reflux control block and a methanol inlet block. A storage chamber is provided in the methanol inlet block, and a methanol inlet flow path is provided in the lower supply control valve block. A methanol inlet is installed on the upper supply control valve block, and the methanol inlet flow path is connected to the methanol inlet and the storage chamber, respectively. A needle valve body control chamber is provided at the top of the needle valve. A ball valve is provided between the needle valve body control chamber and the servo oil control armature, and the needle valve body control chamber is connected to the servo oil inlet passage.

3. The hydrogen and methanol integrated injector according to claim 2, characterized in that: The nozzle assembly includes a nozzle body, a conical annular valve stem connected to the lower part of the needle valve, the conical annular valve stem being located inside the nozzle body, a mixing chamber being formed between the conical annular valve stem and the nozzle body, the mixing chamber being connected to the storage chamber, a multi-hole nozzle being provided below the nozzle body, the multi-hole nozzle being sealed to the conical annular valve stem, and the air intake passage being connected to the mixing chamber.

4. The hydrogen and methanol integrated injector according to claim 1, characterized in that: When the servo oil control solenoid coil is not energized, servo oil enters the bidirectional solenoid valve control assembly from the servo oil accumulator chamber, and then enters the needle valve body control chamber through the servo oil inlet channel. The oil pressure in the needle valve body control chamber increases, and together with the needle valve body return spring, the needle valve body remains stationary. Methanol enters from the methanol inlet, flows through the methanol inlet flow path and storage chamber, and is sprayed out from the methanol nozzle into the mixing chamber, completing the methanol supply. When the hydrogen intake control solenoid coil is energized, the hydrogen intake control electromagnet generates an electromagnetic force that acts on the hydrogen intake control armature. The force acting on the hydrogen intake control armature is a downward pull, and the control armature moves downward against the spring force of the compression return spring. The intake control chamber connects the hydrogen accumulator chamber and the intake flow channel. Hydrogen enters the mixing chamber through the intake flow channel, the bidirectional solenoid valve control assembly, the methanol supply control assembly, and the nozzle assembly, and mixes with methanol, completing the hydrogen supply.

5. The hydrogen and methanol integrated injector according to claim 1, characterized in that: When the servo oil control solenoid coil is energized, the servo oil control electromagnet generates an electromagnetic force that attracts the servo oil control armature. The servo oil control armature overcomes the spring force of the return spring and moves upward. When the servo oil control armature drives the ball valve to open the servo oil return port, the servo oil flows out of the needle valve body control chamber through the return channel, and the pressure in the needle valve body control chamber decreases. The high-pressure mixed fluid in the mixing chamber exerts an upward force on the needle valve body. When the downward pressure generated in the needle valve body control chamber is less than the resultant force of the needle valve body return spring and the upward force exerted by the high-pressure mixed fluid on the needle valve body, the needle valve body moves upward, and the methanol reflux control block connected to the needle valve body moves upward together. When the methanol reflux control block separates from the methanol inlet block, the methanol reflux control block opens the methanol reflux channel, and methanol flows out through the outlet flow path, stopping the supply of methanol. At the same time, the upward movement of the needle valve body drives the conical annular valve stem to open the multi-hole nozzle, and the mixed fluid in the mixing chamber is sprayed out through the nozzle.

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