Air inlet supplementing device for stable air supply of heavy oil engine

Abstract

The invention provides an air inlet supplementing device for stable air supply of a heavy oil engine, and relates to the technical field of air inlet supplementing devices, the air inlet supplementing device comprises a regulating valve shell, a pressure regulating valve is arranged in the regulating valve shell, a diaphragm and a spring are arranged in the pressure regulating valve, a cover plate is arranged on the regulating valve shell, two bolts are arranged on the cover plate, and the two bolts are connected with the pressure regulating valve. The pressure regulating valve is fixedly installed in the regulating valve shell through a cover plate and two bolts in a threaded mode, an air supply inlet is formed in the regulating valve shell, a T-shaped tee joint is connected to the air supply inlet through an air pipe, and an air leakage outlet is formed in the regulating valve shell. Through cooperation of a diaphragm and a spring in the pressure regulating valve and the shunting design of a T-shaped tee joint, precise regulation and control over the air pressure of the air supply system are achieved, when the air pressure exceeds a set threshold value, redundant air is exhausted through an air leakage outlet, it is guaranteed that the oil supply system obtains stable pressure all the time, the fuel oil premixing effect and stable oil injection pressure are guaranteed, and the combustion efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air intake supplement devices, and more specifically, relates to an air intake supplement device for a heavy oil engine with stable air supply. Background Art

[0002] The air supply system is one of the main peripheral components of a spark-ignition two-stroke heavy fuel oil engine. Its primary function is to transmit compressed air to the fuel supply system for fuel premixing and increasing fuel pressure.

[0003] At present, the air supply system of two-stroke heavy oil engine has been found to have at least the following technical problems:

[0004] 1. Due to changes in engine speed, the air pressure output of the air supply system connected to its crankshaft also changes accordingly, and the stable output of air pressure cannot be guaranteed. However, the fuel supply system requires a stable pressure output to accurately control the injection pressure, thereby controlling the fuel atomization effect, achieving optimal combustion, and reducing fuel consumption.

[0005] 2. The two-stroke engine adopts a crankcase intake structure. Sufficient intake volume is an important prerequisite for improving combustion efficiency and enhancing engine power. However, the existing technology does not effectively utilize the excess gas that may be generated in the air supply system and lacks an intake replenishment mechanism for the crankcase. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides an intake supplement device for a heavy oil engine with stable air supply, so as to solve the problem that the air pressure output of the air supply system connected to its crankshaft changes due to changes in engine speed, and the stable output of air pressure cannot be guaranteed.

[0007] An intake supplement device with stable air supply for a heavy oil engine comprises a regulating valve housing, a pressure regulating valve is provided in the regulating valve housing, a diaphragm and a spring are provided in the pressure regulating valve, a cover plate is provided on the regulating valve housing, two bolts are provided on the cover plate, the pressure regulating valve is threadedly fixedly installed in the regulating valve housing through the cover plate and the two bolts, an air supply inlet is provided on the regulating valve housing, a T-shaped tee is connected to the air supply inlet through an air pipe, an air discharge outlet is provided on the regulating valve housing, a crankcase is provided on the left side of the regulating valve housing, an air pipe joint is fixedly installed on the crankcase, an adjusting mechanism is connected between the air pipe joint and the air discharge outlet through the air pipe, and the adjusting mechanism is used to adjust the use of the supplementary intake device in different environments.

[0008] Preferably, the adjustment mechanism includes an adjustment shell, and a first flap and a second flap are rotatably installed inside the adjustment shell. The shapes of the first flap and the second flap are both arc-shaped. Connecting plates are fixedly installed at the front and rear ends of the first flap and the second flap. A rotating rod is fixedly installed on the connecting plate at the front end, and the rotating rod is rotatably installed on the adjustment shell.

[0009] Preferably, a locking screw is threadedly installed on the rotating rod, a filter screen is fixedly installed on the left end of the second flap, two one-way plates are hinged on the right end of the first flap, four guide columns are fixedly installed on the first flap, and springs are provided on the surfaces of the four guide columns, and the springs are located between the one-way plate and the first flap.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In the present invention, the precise regulation of the air pressure of the air supply system is achieved through the cooperation of the diaphragm and spring in the pressure regulating valve and the diversion design of the T-shaped three-way. When the air pressure exceeds the set threshold, excess gas is discharged through the vent outlet to ensure that the fuel supply system always obtains stable pressure, guaranteeing the fuel premixing effect and the stability of the injection pressure, thereby improving combustion efficiency.

[0012] In the present invention, the excess gas discharged from the pressure regulating valve is introduced into the crankcase through the regulating mechanism, and combined with the characteristics of the crankcase air intake of the two-stroke engine, the crankcase air intake is replenished, the amount of air required for combustion is increased, and the combustion efficiency and output power of the engine are improved.

[0013] In the present invention, by adjusting the rotatable first flap, the second flap and the filter screen on the second flap in the mechanism, the flap angle can be flexibly adjusted according to the cleanliness of the environment. In a clean environment, the gas can flow without resistance. In a moderately polluted environment, the filter screen can effectively filter dust, oil and other impurities, thereby significantly improving the applicability of the device in complex environments.

[0014] In the present invention, the overall structure composed of the regulating valve housing, the cover plate, the pressure regulating valve and simple mechanical components (such as the T-type three-way and the regulating mechanism) requires minimal changes to the original air supply system of the engine, does not require complex electronic components, and can operate stably relying solely on mechanical principles, thereby reducing the difficulty of modification and the production and maintenance costs.

[0015] In the present invention, the one-way plate hinged on the first flap cooperates with the spring on the surface of the guide column to achieve one-way flow of gas from the air bleed outlet to the crankcase. When there is no gas or the air pressure is insufficient, the spring force makes the one-way plate fit tightly against the first flap, preventing the gas in the crankcase from flowing out in the opposite direction, thereby ensuring the stability and reliability of the air intake replenishment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the pressure regulating valve of the present invention;

[0018] Figure 3 It is a structural schematic diagram of the regulating valve housing of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the trachea joint of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the regulating housing of the present invention;

[0021] Figure 6 It is a structural schematic diagram of the first flap of the present invention;

[0022] Figure 7 It is a structural schematic diagram of the second flap of the present invention.

[0023] In the figure, the correspondence between the component names and the drawing numbers is: 1. Crankcase; 2. Air pipe joint; 3. Regulating valve housing; 4. Air supply inlet; 5. Air discharge outlet; 6. Pressure regulating valve; 7. Cover plate; 8. Bolt; 9. T-type tee; 12. First flap; 13. One-way plate; 14. Guide column; 15. Filter plate; 16. Second flap; 17. Adjusting housing; 18. Connecting plate; 19. Rotating rod; 20. Locking screw. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0025] See also Figure 1 - Figure 7The present invention provides an intake supplement device for a heavy oil engine with stable air supply, comprising a regulating valve housing 3, a pressure regulating valve 6 provided in the regulating valve housing 3, a diaphragm and a spring provided in the pressure regulating valve 6, a cover plate 7 provided on the regulating valve housing 3, two bolts 8 provided on the cover plate 7, the pressure regulating valve 6 is threadedly fixed in the regulating valve housing 3 by the cover plate 7 and the two bolts 8, an air supply inlet 4 is provided on the regulating valve housing 3, the air supply inlet 4 is used for air supply, the air supply inlet 4 is connected to a T-shaped tee 9 via an air pipe, and the right side of the T-shaped tee 9 is connected to a Oil supply system, the left side of the T-shaped tee 9 is connected to the air supply system through an air pipe, and the regulating valve housing 3 is provided with an air release outlet 5, which is used for releasing air. When the compressed air pressure in the regulating valve housing 3 exceeds the diaphragm and spring pressure in the pressure regulating valve 6, the excess air flows out from the air release outlet 5 opened in the regulating valve housing 3. A crankcase 1 is provided on the left side of the regulating valve housing 3, and an air pipe joint 2 is fixedly installed on the crankcase 1. An adjusting mechanism is connected between the air pipe joint 2 and the air release outlet 5 through an air pipe, and the adjusting mechanism is used to adjust the use of the supplementary air intake device in different environments.

[0026] The two-stroke heavy oil engine transmits compressed air to the oil supply system through the air supply system air pipe, and introduces the air supply into the regulating valve housing 3 by adding a T-shaped tee 9 in the air pipe. The regulating valve housing 3 and the pressure regulating valve can play a role in stabilizing the air supply. When the compressed air pressure exceeds the air pressure setting value, the excess air flows out from the air bleed outlet 5 below the regulating valve housing 3, keeping the air pressure stable at the set value. The excess air enters the crankcase 1 through the lower pipeline to achieve the purpose of replenishing the intake air.

[0027] The air supply stabilization and air intake supplement device adopts the regulating valve housing 3 and the cover plate 7 to cooperate with the pressure regulating valve 6 to achieve the air pressure stabilization function. The regulating valve housing structure is cleverly designed to allow compressed air to enter the pressure regulating valve 6. The air pressure exceeds the diaphragm opening pressure, and the air relief outlet 5 is opened to relieve pressure. At the same time, the air relief outlet 5 is connected to the crankcase to supplement the intake air. The air supply stabilization and air intake supplement device has minimal changes to the original structure. The functions of stabilizing the air supply of the oil supply system and supplementing the crankcase intake can be achieved through only one mechanical device.

[0028] The adjustment mechanism includes an adjustment shell 17, and the first flap 12 and the second flap 16 are rotatably installed inside the adjustment shell 17. The shapes of the first flap 12 and the second flap 16 are both arc-shaped, and the front and rear ends of the first flap 12 and the second flap 16 are fixedly installed with a connecting plate 18. A rotating rod 19 is fixedly installed on the connecting plate 18 at the front end, and the rotating rod 19 is rotatably installed on the adjustment shell 17. A locking screw 20 is threadedly installed on the rotating rod 19. When the first flap 12 and the second flap 16 in the adjustment shell 17 are rotated, they can be adjusted by rotating the rotating rod 19, and after adjustment, the locking screw 20 can be locked to fit it with the end of the adjustment shell 17 to complete the fixation.

[0029] A filter screen 15 is fixedly mounted on the left end of the second flap 16, and the filter screen 15 can be used to filter the gas discharged from the regulating valve housing 3. Two one-way plates 13 are hinged to the right end of the first flap 12, and four guide columns 14 are fixedly mounted on the first flap 12. The surfaces of the four guide columns 14 are all provided with springs, and the springs are located between the one-way plates 13 and the first flap 12. When the gas is discharged through the second flap 16 and passes through the two one-way plates 13, the air pressure can push the one-way plates 13 open, thereby allowing the gas vent pipe joint 2 to enter the crankcase 1, thereby completing the air replenishment.

[0030] Since there is a certain gap between the one-way plate 13 and the filter screen plate 15, when the first flap 12 is rotated upward by the rotating rod 19 and the second flap 16 is rotated downward, the air pipes at both ends of the adjusting shell 17 are completely connected with the interior thereof, so that the air flow can pass directly without resistance, which is suitable for clean environments. When the rotating rod 19 is rotated to drive the first flap 12 and the second flap 16 to be on the horizontal line, the equipment can be used in moderately polluted environments (the equipment operates in dusty / oil-prone areas such as mines, construction sites, and deserts).

[0031] Working principle:

[0032] In the first step, the compressed air delivered by the air supply system is split through the T-shaped tee 9. Part of it is delivered to the fuel supply system through the air pipe to meet the fuel premixing and pressure requirements, and the other part enters the regulating valve housing 3 through the air supply inlet 4.

[0033] In the second step, the pressure regulating valve 6 in the regulating valve housing 3 realizes stable air pressure control through the cooperation of the built-in diaphragm and the spring: when the pressure of the incoming compressed air does not exceed the pressure threshold set by the diaphragm and the spring, the gas remains stable in the regulating valve housing 3 to ensure the air pressure requirement of the oil supply system; when the air pressure exceeds the threshold, the diaphragm is pushed and the excess gas is discharged through the air vent 5 on the regulating valve housing 3.

[0034] In the third step, the excess gas discharged from the air vent 5 enters the regulating shell 17 of the regulating mechanism through the air pipe and enters the air replenishment process.

[0035] The fourth step is to adjust the angles of the first flap 12 and the second flap 16 by rotating the rotating rod 19 that passes through the adjustment shell 17 according to different usage environments: in a clean environment, turn the first flap 12 upward and the second flap 16 downward, so that the air pipes on both sides of the adjustment shell 17 are completely connected with the interior, and the gas flows directly without resistance; in moderately polluted environments such as mines and construction sites, turn the first flap 12 and the second flap 16 to a horizontal position. At this time, the filter plate 15 on the left side of the second flap 16 filters the gas to remove impurities such as dust and oil.

[0036] In the fifth step, the gas processed by the regulating mechanism flows to the one-way plate 13 at the right end of the first flap 12. The gas pressure overcomes the elastic force of the spring on the surface of the guide column 14, pushing the one-way plate 13 open to allow the gas to pass through; at the same time, the elastic force of the spring ensures that the one-way plate 13 fits tightly against the first flap 12 when there is no gas or insufficient air pressure, preventing the gas in the crankcase 1 from flowing out in the opposite direction.

[0037] In the sixth step, the gas passes through the one-way plate 13 and enters the crankcase 1 through the air pipe joint 2, completing the air intake of the crankcase and improving the engine combustion efficiency; after the adjustment is completed, tighten the locking screw 20 on the rotating rod 19 to make it fit tightly with the end of the adjustment shell 17, fix the position of the first flap 12 and the second flap 16, and ensure that the device works stably in the set state.

[0038] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. An air intake supplement device for a heavy oil engine with stable air supply, comprising a regulating valve housing (3), characterized in that: A pressure regulating valve (6) is provided in the regulating valve housing (3), a diaphragm and a spring are provided in the pressure regulating valve (6), a cover plate (7) is provided on the regulating valve housing (3), two bolts (8) are provided on the cover plate (7), the pressure regulating valve (6) is threadedly fixedly mounted in the regulating valve housing (3) through the cover plate (7) and the two bolts (8), an air supply inlet (4) is provided on the regulating valve housing (3), a T-shaped three-way (9) is connected to the air supply inlet (4) through an air pipe, an air discharge outlet (5) is provided on the regulating valve housing (3), a crankcase (1) is provided on the left side of the regulating valve housing (3), and an air pipe joint (2) is fixedly mounted on the crankcase (1); Wherein, an adjustment mechanism is connected between the air pipe joint (2) and the air leakage outlet (5) via an air pipe, and the adjustment mechanism is used to adjust the use of the supplementary air intake device in different environments.

2. The air intake supplement device for a heavy oil engine with stable air supply according to claim 1, characterized in that: The adjustment mechanism comprises an adjustment housing (17), wherein a first flap (12) and a second flap (16) are rotatably mounted inside the adjustment housing (17).

3. The air intake supplement device for a heavy oil engine with stable air supply according to claim 2, characterized in that: The first flap (12) and the second flap (16) are both arc-shaped.

4. The air intake supplement device for a heavy oil engine with stable air supply as claimed in claim 3, characterized in that: Connecting plates (18) are fixedly mounted on both the front and rear ends of the first flap (12) and the second flap (16).

5. The air intake supplement device for a heavy oil engine with stable air supply as claimed in claim 4, characterized in that: A rotating rod (19) is fixedly mounted on the connecting plate (18) at the front end.

6. The air intake supplement device for a heavy oil engine with stable air supply as claimed in claim 5, characterized in that: The rotating rod (19) is rotatably mounted on the adjusting housing (17).

7. The air intake supplement device for a heavy oil engine with stable air supply according to claim 6, characterized in that: A locking screw (20) is threadably mounted on the rotating rod (19).

8. The air intake supplement device for a heavy oil engine with stable air supply as claimed in claim 7, characterized in that: A filter screen plate (15) is fixedly mounted on the left end of the second flap (16).

9. The air intake supplement device for a heavy oil engine with stable air supply as claimed in claim 8, characterized in that: Two one-way plates (13) are hingedly connected to the right end of the first flap (12), and four guide columns (14) are fixedly mounted on the first flap (12).

10. The air intake supplement device for a heavy oil engine with stable air supply according to claim 9, characterized in that: Springs are provided on the surfaces of the four guide posts (14), and the springs are located between the one-way plate (13) and the first flap (12).

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