Combustion-supporting device for oxygen-enriched combustion of gas engine

Abstract

The utility model relates to the technical field of oxygen-enriched combustion supporting, in particular to a combustion supporting device for oxygen-enriched combustion of a gas engine, which comprises a booster pump for adding oxygen-enriched gas into the gas engine, a pressure release valve for limiting the flow rate of the oxygen-enriched gas and an electromagnetic valve for changing the direction of the oxygen-enriched gas entering a combustion chamber, the booster pump comprises a flange interface of an oxygen-enriched gas inlet, a pump shaft connected with a main shaft of the gas engine, a booster chamber for increasing the pressure of the oxygen-enriched gas and a transmission pipe for changing the flow direction of the oxygen-enriched gas, the flange interface is arranged on one side of the booster pump, and the pump shaft is mounted in the center of the booster pump and penetrates through the side wall of the other side of the booster pump to be connected with the main shaft of the gas engine. The pump shaft is connected with the main shaft of the gas engine, oxygen can be timely added to the booster pump along with combustion power, the pressure release valve is used for limiting the safety value of the flow speed of oxygen-enriched gas, parts are prevented from being damaged by over-atmospheric pressure, the electromagnetic valve is used for changing the direction of oxygen entering the combustion chamber, and the oxygen is in contact combustion from the two sides of the fire spraying opening to improve the combustion efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen-enriched combustion-supporting, in particular to a combustion-supporting device for oxygen-enriched combustion of a gas engine. Background Art

[0002] Oxygen-enriched combustion refers to the use of oxygen with a concentration higher than 21% for combustion. It has significant energy-saving effects, effectively extends the service life of the combustion chamber, helps reduce the output of carbon-containing gases, and has outstanding environmental protection effects. General gas engines use natural aspiration to draw oxygen from the external air into the combustion chamber, and convert chemical energy into kinetic energy through the combustion of oxygen and gas. Due to the small space of the combustion chamber and the combustion causing the indoor oxygen content to further decrease, incomplete combustion of gas is very likely to occur, which not only wastes gas but also discharges a large amount of carbon-containing gas to pollute the environment. Therefore, it is necessary to install a combustion aid to add high concentration of oxygen for oxygen-enriched combustion.

[0003] Chinese patent document CN117537361A discloses a highly efficient and energy-saving oxygen-enriched combustion-supporting device, comprising a base plate, a rotating assembly, a vent pipe, and a housing. A motor (1) is located on the left side of the upper end of the base plate, with a bevel gear (2) located at the output end of the motor (1). A fixed ring is located on the lower outer surface of the housing, with a bevel gear (1) located on the outer surface of the fixed ring. The outer surface of the bevel gear (1) meshes with the outer surface of the bevel gear (2). The lower end of the fixed ring is provided with multiple synchronized blocks, each of which has a driven device located at its lower end. This solution controls the ratio of oxygen to air through the provided driven assembly. When air and oxygen enter the two inlet pipes (2), the rotating assembly drives multiple mixing assemblies to operate, thereby fully mixing the two gases.

[0004] There are still several points for improvement in the above scheme: the combustion-supporting speed cannot match the combustion speed of the gas engine, and insufficient oxygen supply is very likely to occur when the gas engine power is increased; the exhaust gas generated by the oxygen-rich gas contacting the flame nozzle from one side affects the subsequent combustion efficiency. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides a combustion-supporting device for oxygen-enriched combustion of a gas engine, comprising a booster pump for adding oxygen-enriched gas to the gas engine, a pressure relief valve for limiting the flow rate of the oxygen-enriched gas, and a solenoid valve for changing the direction in which the oxygen-enriched gas enters a combustion chamber. The booster pump comprises a flange interface for an oxygen-enriched gas inlet, a pump shaft connected to a main shaft of the gas engine, a booster chamber for increasing the pressure of the oxygen-enriched gas, and a transmission pipe for changing the flow direction of the oxygen-enriched gas. The flange interface is arranged on one side of the booster pump, the pump shaft is installed at the center of the booster pump and passes through the side wall on the other side of the booster pump to be connected to the main shaft of the gas engine. The booster chamber is arranged on the top of the booster pump, the transmission pipe is installed on the top of the booster chamber and is connected to one side of the pressure relief valve, and a solenoid valve is installed on the other side of the pressure relief valve, and the solenoid valve is connected to the combustion chamber on the gas engine.

[0006] Preferably, a pump wheel, impeller blades and a flywheel are provided on the pump shaft, the centers of the pump wheel and the flywheel are passed through by the pump shaft and are fixedly connected to the pump shaft, and the impeller blades are provided on the pump wheel.

[0007] Preferably, the boosting chamber includes a cavity, a piston, a push rod and a connecting rod, the cavity is arranged at the top of the boosting chamber, the piston moves up and down in the cavity, the push rod is installed at the bottom of the piston, and the connecting rod is rotatably connected to the push rod.

[0008] Preferably, the piston includes an air hole, a sealing plate, a positioning rod and a nut. The air hole is arranged at the center of the piston, the positioning rod is installed on the upper surface of the piston and is located next to the air hole, the sealing plate is attached to the air hole and installed on the positioning rod, and the nut is rotatably installed on the positioning rod.

[0009] Preferably, the pressure relief valve includes a boost interface, a regulating chamber and an air vent. The boost interface is installed on one side of the pressure relief valve and connected to the solenoid valve. The regulating chamber is vertically installed on the top of the pressure relief valve. The air vent is vertically installed on the regulating chamber and parallel to the boost interface.

[0010] Preferably, the regulating chamber includes an air pipe, a seal, a spring and a threaded push plate. The air pipe is arranged inside the regulating chamber, the seal is installed on the top of the air pipe, the threaded push plate passes through the top of the regulating chamber and is above the seal, and the spring is arranged between the seal and the threaded push plate.

[0011] Preferably, the solenoid valve includes a control motor, a main air inlet, an exhaust port and an auxiliary air inlet. The control motor is installed on the side of the solenoid valve, the main air inlet is arranged at the center of one side of the solenoid valve, the exhaust port is arranged on both sides of the main air inlet, and there are two auxiliary air inlets, both of which are arranged on the other side of the solenoid valve and connected to the combustion chamber.

[0012] Preferably, the main air inlet includes an air cavity, a movable rod and a partition. The air cavity is arranged at the center of the solenoid valve, the movable rod is installed in the air cavity, and the partition is arranged on the movable rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The utility model uses a pump shaft to connect with the main shaft of the gas engine to ensure that the booster pump can add oxygen in time with the combustion power. Specifically, by connecting the pump shaft of the booster pump with the main shaft of the gas engine, the booster pump can add oxygen-enriched gas in time according to the oxygen consumption rate of the combustion chamber, ensuring that oxygen-enriched combustion is always carried out in the combustion chamber while avoiding waste of oxygen-enriched gas.

[0015] 2. The utility model uses a pressure relief valve to limit the safety value of the oxygen-rich gas flow rate to avoid damage to parts due to excessive atmospheric pressure. Specifically, the pressure relief valve is used to limit the safety air pressure flowing from the transmission pipe to the solenoid valve, the regulating chamber is used to control the safety air pressure value set by the pressure relief valve, and the vent is used to discharge excess gas exceeding the rated value.

[0016] 3. The utility model uses a solenoid valve to change the direction of oxygen entering the combustion chamber, so that oxygen contacts and burns from both sides of the flamethrower to improve combustion efficiency. Specifically, two auxiliary air inlets are connected to both sides of the flamethrower of the combustion chamber. One port adds oxygen-rich gas to the combustion chamber, and the other discharges the exhaust gas after combustion. The movable rod moves in the air cavity to exchange the functions of the two auxiliary air inlets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a combustion-supporting device used for oxygen-enriched combustion in a gas engine.

[0018] Figure 2 The present invention is a cross-sectional view of a booster pump in a combustion-supporting device for oxygen-enriched combustion in a gas engine.

[0019] Figure 3 The present invention is a stereoscopic diagram of a pump shaft in a combustion-supporting device used for oxygen-enriched combustion in a gas engine.

[0020] Figure 4 The present invention is a three-dimensional diagram of a piston in a combustion-supporting device used for oxygen-enriched combustion in a gas engine.

[0021] Figure 5 The present invention is a cross-sectional view of a pressure relief valve in a combustion-supporting device used for oxygen-enriched combustion in a gas engine.

[0022] Figure 6 The present invention is a cross-sectional view of a solenoid valve in a combustion-supporting device for oxygen-enriched combustion in a gas engine.

[0023] The numbers in the figure are: 1. Booster pump; 2. Flange interface; 3. Pump shaft; 31. Pump impeller; 32. Impeller; 33. Flywheel; 4. Booster chamber; 41. Cavity; 42. Piston; 421. Air hole; 422. Sealing plate; 423. Positioning rod; 424. Nut; 43. Push rod; 44. Connecting rod; 5. Transmission pipe; 6. Pressure relief valve; 61. Booster interface; 62. Adjusting chamber; 621. Air pipe; 622. Seal; 623. Spring; 624. Threaded push plate; 63. Air vent; 7. Solenoid valve; 71. Control motor; 72. Main air inlet; 721. Air cavity; 722. Movable rod; 723. Partition; 73. Exhaust port; 74. Auxiliary air inlet. DETAILED DESCRIPTION

[0024] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] See also Figures 1 to 6As shown, a combustion-supporting device for oxygen-enriched combustion of a gas engine includes a booster pump 1 that adds oxygen-enriched gas to the gas engine, a pressure relief valve 6 that limits the flow rate of the oxygen-enriched gas, and an electromagnetic valve 7 that changes the direction of the oxygen-enriched gas entering the combustion chamber. The booster pump 1 includes a flange interface 2 for the oxygen-enriched gas inlet, a pump shaft 3 connected to the main shaft of the gas engine, a booster chamber 4 that increases the pressure of the oxygen-enriched gas, and a transmission pipe 5 that changes the flow direction of the oxygen-enriched gas. The flange interface 2 is arranged on one side of the booster pump 1, the pump shaft 3 is installed at the center of the booster pump 1 and passes through the side wall on the other side of the booster pump 1 to be connected to the main shaft of the gas engine. The booster chamber 4 is arranged at the top of the booster pump 1, the transmission pipe 5 is installed on the top of the booster chamber 4 and is connected to one side of the pressure relief valve 6, and the electromagnetic valve 7 is installed on the other side of the pressure relief valve 6. The electromagnetic valve 7 is connected to the combustion chamber on the gas engine.

[0026] The combustion-supporting device is connected to oxygen tanks of various types through a flange interface 2, so that the oxygen-rich gas containing high-concentration oxygen enters the combustion chamber of the gas engine through the pressurization of the boosting chamber 4. By connecting the pump shaft 3 of the boosting pump to the main shaft of the gas engine, the boosting pump 1 can add oxygen-rich gas in time according to the oxygen consumption rate of the combustion chamber, ensuring that oxygen-rich combustion is always carried out in the combustion chamber while avoiding waste of oxygen-rich gas. The transmission pipe 5 provides guidance for the oxygen-rich gas and facilitates the positioning and installation of the pressure relief valve 6. The pressure relief valve 6 is used to limit the safety air pressure of the transmission pipe 5 to the solenoid valve 7 to avoid damage to the solenoid valve 7. Since the combustion chamber and the gas in the traditional gas engine are in single-sided contact, it is very easy to cause oxygen to be consumed on one side of the flame vent, resulting in uneven combustion. For this reason, the combustion-supporting device uses the solenoid valve 7 to allow the oxygen-rich gas to contact it from both sides of the flame vent in the combustion chamber to ensure uniform combustion.

[0027] See also Figures 1 to 3 As shown, a pump wheel 31 , a vane 32 and a flywheel 33 are provided on the pump shaft 3 . The centers of the pump wheel 31 and the flywheel 33 are passed through by the pump shaft 3 and are fixedly connected to the pump shaft 3 . The vane 32 is provided on the pump wheel 31 .

[0028] As the pump shaft 3 rotates, the pump wheel 31 and the impeller 32 vertically deliver the oxygen-rich gas from the flange interface 2 into the boost chamber 4 above. The flywheel 33 rotates coaxially with the pump shaft 3 to provide a power source for pressurizing the boost chamber 4.

[0029] See also Figure 1 and Figure 2 As shown, the boosting chamber 4 includes a cavity 41, a piston 42, a push rod 43 and a connecting rod 44. The cavity 41 is arranged at the top of the boosting chamber 4, the piston 42 moves up and down in the cavity 41, the push rod 43 is installed at the bottom of the piston 42, and the connecting rod 44 is rotatably connected to the push rod 43.

[0030] The cavity 41 is used to limit the movement range of the piston 42, the push rod 43 is used to control the movement of the piston 42, and the connecting rod 44 is rotatably connected to the flywheel 33 on the pump shaft 3, so that the entire boost chamber 4 forms a crankshaft connecting rod 44 device, ensuring the pressurization efficiency of the oxygen-rich gas.

[0031] See also Figure 2 and Figure 3 As shown, the piston 42 includes an air hole 421, a sealing piece 422, a positioning rod 423 and a nut 424. The air hole 421 is set at the center of the piston 42, the positioning rod 423 is installed on the upper surface of the piston 42 and is next to the air hole 421, the sealing piece 422 is attached to the air hole 421 and installed on the positioning rod 423, and the nut 424 is rotatably installed on the positioning rod 423.

[0032] Since the movement of the piston 42 in the air cavity 721 will form an air pressure difference, the air hole 421 is used to balance the air pressure in the cavity 41 and the booster pump 1. The sealing piece 422 is used to unidirectionally seal the air hole 421 to prevent the piston 42 from moving and forming a suction pressure. The positioning rod 423 and the nut 424 are used to quickly install and remove the sealing piece 422. When the piston 42 moves downward, the oxygen-rich gas pushes the sealing piece 422 open from the air hole 421 and enters the cavity 41. When the piston 42 moves upward, the oxygen-rich gas presses the sealing piece 422 against the air hole 421 from the top of the sealing piece 422 to avoid suction and leakage.

[0033] See also Figures 1 to 5 As shown, the pressure relief valve 6 includes a boost interface 61, a regulating chamber 62 and an air vent 63. The boost interface 61 is installed on one side of the pressure relief valve 6 and is connected to the solenoid valve 7. The regulating chamber 62 is vertically installed on the top of the pressure relief valve 6. The air vent 63 is vertically installed on the regulating chamber 62 and is parallel to the boost interface 61.

[0034] The boost interface 61 is used to increase the air pressure entering the solenoid valve 7 for a second time, the regulating chamber 62 is used to control the safety air pressure value set by the pressure relief valve 6, and the air vent 63 is used to discharge excess gas exceeding the rated value.

[0035] See also Figure 5 As shown, the regulating chamber 62 includes an air pipe 621, a seal 622, a spring 623 and a threaded push plate 624. The air pipe 621 is arranged inside the regulating chamber 62, the seal 622 is installed on the top of the air pipe 621, the threaded push plate 624 passes through the top of the regulating chamber 62 and is above the seal 622, and the spring 623 is arranged between the seal 622 and the threaded push plate 624.

[0036] The seal 622 is squeezed by the spring 623 to block the mouth of the air pipe 621. The squeezing force of the spring 623 on the seal 622 can be changed by adjusting the height of the threaded push plate 624 at the top of the adjustment chamber 62, thereby adjusting the safety value of the pressure relief valve 6. When the air pressure in the air pipe 621 is greater than the pressure of the spring 623, the seal 622 is pushed up and the gas is discharged from the air vent 63.

[0037] See also Figures 1 to 6 As shown, the solenoid valve 7 includes a control motor 71, a main air inlet 72, an exhaust port 73 and an auxiliary air inlet 74. The control motor 71 is installed on the side of the solenoid valve 7, the main air inlet 72 is arranged at the center of one side of the solenoid valve 7, the exhaust port 73 is arranged on both sides of the main air inlet 72, and there are two auxiliary air inlets 74, both of which are arranged on the other side of the solenoid valve 7 and connected to the combustion chamber.

[0038] The main air inlet 72 is connected to the boost interface 61 on the pressure relief valve 6, the two auxiliary air inlets 74 are connected on both sides of the combustion chamber flame outlet, the exhaust port 73 is used to discharge the residual gas generated in the combustion chamber, and the control motor 71 is used to change the flow direction of the oxygen-rich gas in the solenoid valve 7 to ensure that each working stroke of the gas engine changes the contact position between the oxygen-rich gas and the flame outlet in the gas chamber.

[0039] See also Figure 6 As shown, the main air inlet 72 includes an air cavity 721 , a movable rod 722 and a partition 723 . The air cavity 721 is arranged at the center of the solenoid valve 7 , the movable rod 722 is installed in the air cavity 721 , and the partition 723 is arranged on the movable rod 722 .

[0040] One of the two auxiliary air inlets 74 adds oxygen-rich gas to the combustion chamber, and the other discharges the exhaust gas after combustion. The movable rod 722 moves in the air cavity 721 to exchange the functions of the two auxiliary air inlets 74. The partition 723 is used to isolate the air cavity 721 to prevent the oxygen-rich gas from mixing with the exhaust gas after combustion.

[0041] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A combustion-supporting device for oxygen-enriched combustion in a gas engine, comprising a booster pump (1) for adding oxygen-enriched gas to the gas engine, a pressure relief valve (6) for limiting the flow rate of the oxygen-enriched gas, and a solenoid valve (7) for changing the direction in which the oxygen-enriched gas enters a combustion chamber; It is characterized by: The booster pump (1) comprises a flange interface (2) for an oxygen-enriched gas inlet, a pump shaft (3) connected to a main shaft of a gas engine, a booster chamber (4) for increasing the pressure of the oxygen-enriched gas, and a transmission pipe (5) for changing the flow direction of the oxygen-enriched gas. The flange interface (2) is arranged on one side of the booster pump (1), the pump shaft (3) is installed at the center of the booster pump (1) and passes through the side wall of the other side of the booster pump (1) to be connected to the main shaft of the gas engine. The booster chamber (4) is arranged on the top of the booster pump (1), the transmission pipe (5) is installed on the top of the booster chamber (4) and is connected to one side of a pressure relief valve (6). The other side of the pressure relief valve (6) is installed with a solenoid valve (7), and the solenoid valve (7) is connected to a combustion chamber on the gas engine.

2. A combustion-supporting device for oxygen-enriched combustion of a gas engine according to claim 1, characterized in that: A pump wheel (31), a wheel blade (32) and a flywheel (33) are arranged on the pump shaft (3); the centers of the pump wheel (31) and the flywheel (33) are passed through by the pump shaft (3) and are fixedly connected to the pump shaft (3); and the wheel blade (32) is arranged on the pump wheel (31).

3. The combustion-supporting device for oxygen-enriched combustion of a gas engine according to claim 1, characterized in that: The boost chamber (4) includes a cavity (41), a piston (42), a push rod (43) and a connecting rod (44). The cavity (41) is arranged at the top of the boost chamber (4), the piston (42) moves up and down in the cavity (41), the push rod (43) is installed at the bottom of the piston (42), and the connecting rod (44) is rotatably connected to the push rod (43).

4. A combustion-supporting device for oxygen-enriched combustion of a gas engine according to claim 3, characterized in that: The piston (42) includes an air hole (421), a sealing plate (422), a positioning rod (423) and a nut (424). The air hole (421) is set at the center of the piston (42). The positioning rod (423) is installed on the upper surface of the piston (42) and is located beside the air hole (421). The sealing plate (422) is attached to the air hole (421) and installed on the positioning rod (423). The nut (424) is rotatably installed on the positioning rod (423).

5. The combustion-supporting device for oxygen-enriched combustion of a gas engine according to claim 1, characterized in that: The pressure relief valve (6) comprises a pressurization interface (61), a regulating chamber (62) and an air release port (63). The pressurization interface (61) is installed on one side of the pressure relief valve (6) and is connected to the solenoid valve (7). The regulating chamber (62) is vertically installed on the top of the pressure relief valve (6). The air release port (63) is vertically installed on the regulating chamber (62) and is parallel to the pressurization interface (61).

6. The combustion-supporting device for oxygen-enriched combustion of a gas engine according to claim 5, characterized in that: The regulating chamber (62) includes an air pipe (621), a seal (622), a spring (623) and a threaded push plate (624). The air pipe (621) is arranged inside the regulating chamber (62), the seal (622) is installed on the top of the air pipe (621), the threaded push plate (624) passes through the top of the regulating chamber (62) and is located above the seal (622), and the spring (623) is arranged between the seal (622) and the threaded push plate (624).

7. The combustion-supporting device for oxygen-enriched combustion of a gas engine according to claim 1, characterized in that: The solenoid valve (7) comprises a control motor (71), a main air inlet (72), an exhaust port (73) and an auxiliary air inlet (74). The control motor (71) is mounted on the side of the solenoid valve (7), the main air inlet (72) is arranged at the center of one side of the solenoid valve (7), the exhaust port (73) is arranged on both sides of the main air inlet (72), and there are two auxiliary air inlets (74), both of which are arranged on the other side of the solenoid valve (7) and connected to the combustion chamber.

8. The combustion-supporting device for oxygen-enriched combustion of a gas engine according to claim 7, characterized in that: The main air inlet (72) comprises an air cavity (721), a movable rod (722) and a partition (723). The air cavity (721) is arranged at the center of the solenoid valve (7), the movable rod (722) is installed in the air cavity (721), and the partition (723) is arranged on the movable rod (722).

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