Fuel supply structure of micro turbojet engine

Abstract

The utility model relates to the technical field of fuel supply, and discloses a micro turbojet engine fuel supply structure which comprises an oil storage tank, the bottom of the oil storage tank is communicated with a crude oil pipe, a dustproof cover is clamped to the top of the oil storage tank, the bottom face of the dustproof cover is fixedly connected with an attaching edge, and the middle of the bottom face of the dustproof cover is fixedly connected with a fixing column. The outer wall of the fixing column is slidably connected with a sliding pipe, the outer wall of the sliding pipe is fixedly connected with ratchets, the bottom of the sliding pipe is fixedly connected with an attaching plate, the bottom face of the dustproof cover is fixedly connected with a mounting column, the lower end of the mounting column is rotatably connected with a pawl, and the outer wall of the pawl is fixedly connected with a spring. According to the fuel pump, the attaching plate is attached to the liquid level and descends, the oil storage cavity is narrowed, and therefore shaking of fuel oil is limited, the pressure at an inlet of the fuel pump is stable, and normal work and stable output pressure of the fuel pump are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel supply, in particular to a fuel supply structure for a micro turbojet engine. Background Art

[0002] A turbojet engine, also known as a turbojet engine, is a gas turbine engine that generates reaction thrust in a single flow channel by high-speed combustion gas ejected from the engine. Air enters the engine from the air inlet, is compressed by the compressor, and then enters the combustion chamber to mix with the fuel and burn, generating a large amount of high-temperature combustion gas. The high-temperature combustion gas enters the turbine and drives it to rotate. The turbine and compressor are coaxial, thereby driving the compressor to rotate. The combustion gas flowing out of the turbine expands through the tail nozzle and is ejected backward at high speed, generating thrust, while driving the compressor and turbine to continue rotating to maintain the working cycle. The turbojet engine has large thrust, fast response speed, and relatively simple structure, but has a high fuel consumption rate.

[0003] The fuel supply structure of a turbojet engine is key to ensuring stable engine operation. The fuel tank stores fuel and provides fuel reserves for the entire system. The fuel pump draws fuel from the tank and delivers it at a boost pressure. The fuel filter is located between the fuel pump and the engine. The filter element can effectively filter out dust, metal chips, and moisture impurities to ensure the cleanliness of the fuel entering the engine and prevent component blockage, wear, and corrosion. The fuel injector is responsible for accurately spraying the fuel into the combustion chamber in an atomized form. These components work together to ensure the fuel supply of the turbojet engine.

[0004] The turbojet engine is powerful, but the fuel will shake greatly during strenuous exercise, and the pressure at the fuel pump inlet will fluctuate, causing the fuel pump to not work properly and the output pressure to be unstable. A stable fuel supply pressure can ensure that the injector sprays fuel at an appropriate pressure, ensuring the fuel atomization effect and the accuracy of the injection amount, which is crucial for the normal combustion and power output of the engine. However, the current fuel tank cannot solve the problem of fuel shaking during strenuous exercise. Utility Model Content

[0005] In order to make up for the above deficiencies, the present invention provides a fuel supply structure for a micro turbojet engine, aiming to improve the problem of fuel sloshing during intense exercise in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a micro-turbojet engine fuel supply structure, comprising an oil storage tank, the bottom of the oil storage tank is connected to a crude oil pipe, the top of the oil storage tank is clamped with a dust cover, the bottom surface of the dust cover is fixedly connected with a fitting edge, the middle part of the bottom surface of the dust cover is fixedly connected with a fixed column, the outer wall of the fixed column is slidably connected with a sliding tube, the outer wall of the sliding tube is fixedly connected with a ratchet, the bottom of the sliding tube is fixedly connected with a fitting plate, the bottom surface of the dust cover is fixedly connected with a mounting column, the lower end of the mounting column is rotatably connected with a pawl, the outer wall of the pawl is fixedly connected with a spring, the other end of the spring is fixedly connected to the outer wall of the mounting column, and the other end of the crude oil pipe is provided with a detachable filter tank, and the detachable filter tank is used for filtering fuel.

[0007] As a further description of the above technical solution:

[0008] The detachable filter tank includes an outer shell, the left side of the outer shell is connected to the crude oil pipe, the inner wall of the outer shell is fixedly connected to a support sleeve, the outer wall of the support sleeve is installed with a filter element, the right end of the outer shell is provided with a matching groove, the inner wall of the matching groove is threadedly connected to a clamping block, the other end of the clamping block is fixedly connected to a closing cover, and the outer wall of the clamping block is fixedly connected to a sealing gasket.

[0009] As a further description of the above technical solution:

[0010] An air vent is formed on the outer wall of the dust cover, and an air filter is fixedly connected to the inner wall of the air vent.

[0011] As a further description of the above technical solution:

[0012] A valve is provided in the middle of the crude oil pipe, and a wrench is rotatably connected to the top of the valve.

[0013] As a further description of the above technical solution:

[0014] An oil cleaning pipe is connected to the middle of the outer wall of the shell, and an operation hole is opened on the outer wall of the closing cover.

[0015] As a further description of the above technical solution:

[0016] A handle is fixedly connected to the top of the dust cover, and a fuel pump is arranged in the middle of the crude oil pipe.

[0017] As a further description of the above technical solution:

[0018] One end of the oil cleaning pipe is connected to an atomizing nozzle, and an oil spray hole is opened on the outer wall of the atomizing nozzle.

[0019] As a further description of the above technical solution:

[0020] A plurality of adsorption balls are fixedly connected to the bottom surface of the laminating plate, and an anti-slip groove is provided on the outer wall of the closing cover.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, when the fuel in the oil tank is consumed, the liquid level drops, and the contact plate descends in close proximity to the liquid level, shrinking the oil storage chamber. When the oil tank shakes, the ratchet and pawl on the surface of the sliding tube are locked, preventing the contact plate from rising, thereby limiting the shaking of the fuel. The spring allows the sliding tube to descend smoothly, and when shaking occurs, the pawl can be promptly reset to engage the sliding tube, thereby stabilizing the pressure at the oil pump inlet and ensuring the normal operation of the fuel pump and stable output pressure.

[0023] 2. In the present invention, fuel with impurities enters from the crude oil pipe. Under the pressure provided by the fuel pump, the fuel passes through the filter element, and the impurities remain on the surface of the filter element. The filtered fuel is discharged from the oil cleaning pipe. The closing cover is at the rear of the shell, and the matching groove and the clamping block are engaged with the sealing gasket to prevent fuel leakage. The filter element can be replaced by removing the closing cover, which realizes quick replacement of the filter element and convenient cleaning of the filter element. Only the filter element needs to be replaced, which can also save a lot of costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front perspective view of the fuel supply structure of the micro turbojet engine proposed in the present invention;

[0025] Figure 2 This is a partial structural diagram of the sliding pipe of the micro turbojet engine fuel supply structure proposed by the present utility model;

[0026] Figure 3 This is a partial structural diagram of the adsorption ball of the micro turbojet engine fuel supply structure proposed by the present invention;

[0027] Figure 4 This is a partial structural exploded view of the detachable filter tank of the micro turbojet engine fuel supply structure proposed in the utility model;

[0028] Figure 5 This is a schematic diagram of the partial structure of the closure cover of the fuel supply structure of the micro turbojet engine proposed by the present invention.

[0029] Legend:

[0030] 1. Oil storage tank; 2. Removable filter tank; 201. Housing; 202. Filter element; 203. Support sleeve; 204. Closing cover; 205. Fitting groove; 206. Block; 207. Sealing gasket; 3. Crude oil pipe; 4. Dust cover; 5. Fitting edge; 6. Fixed column; 7. Sliding tube; 8. Fitting plate; 9. Ratchet; 10. Mounting column; 11. Pawl; 12. Spring; 13. Handle; 14. Air filter; 15. Valve; 16. Wrench; 17. Fuel pump; 18. Oil cleaning pipe; 19. Atomizing nozzle; 20. Injection hole; 21. Vent hole; 22. Operation hole; 23. Adsorption ball; 24. Anti-skid groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Please see the attached Figure 1 - Attachment Figure 3 , the utility model provides an embodiment: a micro-turbojet engine fuel supply structure, including an oil tank 1, the oil tank 1 is the basic component of the entire fuel supply structure, and is used to store the fuel required by the micro-turbojet engine. The bottom of the oil tank 1 is connected to a crude oil pipe 3, and the crude oil pipe 3 is a channel for the fuel to flow out of the oil tank 1, providing a path for subsequent fuel transportation and processing links. A dust cover 4 is clamped on the top of the oil tank 1. The dust cover 4 mainly prevents dust and impurities from entering the oil tank 1. The bottom surface of the dust cover 4 is fixedly connected to a fitting edge 5, which can ensure that the dust cover 4 is tightly fitted with the top of the oil tank 1 to prevent dust and impurities from entering. Dust enters through the gap between the two. A fixed column 6 is fixedly connected to the middle part of the bottom surface of the dust cover 4. A sliding tube 7 is slidably connected to the outer wall of the fixed column 6. The sliding tube 7 can move up and down along the fixed column 6. A ratchet 9 is fixedly connected to the outer wall of the sliding tube 7. A fitting plate 8 is fixedly connected to the bottom of the sliding tube 7. A mounting column 10 is fixedly connected to the bottom surface of the dust cover 4. A pawl 11 is rotatably connected to the lower end of the mounting column 10. A spring 12 is fixedly connected to the outer wall of the pawl 11. The other end of the spring 12 is fixedly connected to the outer wall of the mounting column 10. A detachable filter tank 2 is provided at the other end of the crude oil pipe 3. The detachable filter tank 2 is used to filter the fuel.

[0033] Please see the attached Figure 3 - Attachment Figure 5The detachable filter tank 2 includes a shell 201. The left side of the shell 201 is connected to the crude oil pipe 3. The shell 201 is the main structure. The left side is connected to the crude oil pipe 3 to provide an entrance for the fuel to enter the filter tank. The inner wall of the shell 201 is fixedly connected with a support sleeve 203. The support sleeve 203 provides a stable installation position for the filter element 202 to ensure that the filter element 202 will not move during operation. The outer wall of the support sleeve 203 is installed with a filter element 202. The filter element 202 is installed on the outer wall of the support sleeve 203. It is the core component for realizing the fuel filtering function. The filter element 202 can have The filter element 202 is easily removed from the filter tank and the filter element 202 is easily replaced. ...

[0034] Please see the attached Figure 1 - Attachment Figure 3 The outer wall of the dust cover 4 is provided with a vent 21, and the inner wall of the vent 21 is fixedly connected to the air filter 14. The vent 21 is used to balance the air pressure inside and outside the oil storage tank 1 to ensure that the fuel can flow out smoothly. The air filter 14 can prevent dust and impurities in the air from entering the oil storage tank 1 through the vent 21. A valve 15 is provided in the middle of the crude oil pipe 3. The valve 15 is used to control the flow of fuel in the crude oil pipe 3. The top of the valve 15 is rotatably connected to a wrench 16. The middle of the outer wall of the shell 201 is connected to the oil cleaning pipe 18. The outer wall of the closing cover 204 is provided with an operating hole 22. The operating hole 22 can be used to insert tools when installing and removing the closing cover 204, further facilitating the operation.

[0035] Please see the attached Figure 4 - Attachment Figure 5 A handle 13 is fixedly connected to the top of the dust cover 4, and the handle 13 facilitates the installation and removal of the dust cover 4. A fuel pump 17 is provided in the middle of the crude oil pipe 3, and the fuel pump 17 is used to provide power for the fuel so that it can flow smoothly in the entire fuel supply structure. One end of the oil cleaning pipe 18 is connected to an atomizing nozzle 19, and an oil injection hole 20 is provided on the outer wall of the atomizing nozzle 19. A plurality of adsorption balls 23 are fixedly connected to the bottom surface of the bonding plate 8, and an anti-slip groove 24 is provided on the outer wall of the closing cover 204. The anti-slip groove 24 can increase the friction between the hand and the closing cover 204 to prevent slipping.

[0036] Working Principle: When the fuel in the oil tank 1 is consumed, the liquid level drops, and the bonding plate 8 descends closely to the liquid level, shrinking the oil storage chamber. When the oil tank 1 shakes, the ratchet 9 and pawl 11 on the surface of the sliding tube 7 are locked, preventing the bonding plate 8 from rising, thereby limiting the sloshing of the fuel. The spring 12 allows the sliding tube 7 to descend smoothly. When shaking, the pawl 11 can be promptly reset to clamp the sliding tube 7, stabilizing the pressure at the oil pump inlet and ensuring the normal operation of the fuel pump 17 and stable output pressure.

[0037] Fuel containing impurities enters from the crude oil pipe 3. Under the pressure provided by the fuel pump 17, the fuel passes through the filter element 202, and the impurities remain on the surface of the filter element 202. The filtered fuel is discharged from the oil cleaning pipe 18. The closing cover 204 is at the rear end of the housing 201, and the matching groove 205 is threadedly engaged with the block 206. The sealing gasket 207 prevents fuel leakage. The filter element 202 can be replaced by removing the closing cover 204, which realizes quick replacement of the filter element 202 and facilitates cleaning of the filter element 202. Replacing only the filter element 202 can also save a lot of costs.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A micro-turbojet engine fuel supply structure, comprising an oil storage tank (1), characterized in that: The bottom of the oil storage tank (1) is connected to a crude oil pipe (3), the top of the oil storage tank (1) is engaged with a dust cover (4), the bottom surface of the dust cover (4) is fixedly connected to a fitting edge (5), the middle part of the bottom surface of the dust cover (4) is fixedly connected to a fixed column (6), the outer wall of the fixed column (6) is slidably connected to a sliding tube (7), the outer wall of the sliding tube (7) is fixedly connected to a ratchet (9), the bottom of the sliding tube (7) is fixedly connected to a fitting plate (8), the bottom surface of the dust cover (4) is fixedly connected to a mounting column (10), the lower end of the mounting column (10) is rotatably connected to a pawl (11), the outer wall of the pawl (11) is fixedly connected to a spring (12), the other end of the spring (12) is fixedly connected to the outer wall of the mounting column (10), and the other end of the crude oil pipe (3) is provided with a detachable filter tank (2), and the detachable filter tank (2) is used for filtering fuel.

2. The micro-turbojet engine fuel supply structure according to claim 1, characterized in that: The detachable filter tank (2) comprises a shell (201), the left side of the shell (201) is in communication with the crude oil pipe (3), the inner wall of the shell (201) is fixedly connected to a support sleeve (203), the outer wall of the support sleeve (203) is mounted with a filter element (202), the right end of the shell (201) is provided with a matching groove (205), the inner wall of the matching groove (205) is threadedly connected to a clamping block (206), the other end of the clamping block (206) is fixedly connected to a closing cover (204), and the outer wall of the clamping block (206) is fixedly connected to a sealing gasket (207).

3. The micro-turbojet engine fuel supply structure according to claim 1, characterized in that: An air vent (21) is provided on the outer wall of the dust cover (4), and an air filter (14) is fixedly connected to the inner wall of the air vent (21).

4. The micro-turbojet engine fuel supply structure according to claim 1, characterized in that: A valve (15) is provided in the middle of the crude oil pipe (3), and a wrench (16) is rotatably connected to the top of the valve (15).

5. The micro-turbojet engine fuel supply structure according to claim 2, characterized in that: An oil cleaning pipe (18) is connected to the middle of the outer wall of the housing (201), and an operating hole (22) is opened on the outer wall of the closing cover (204).

6. The micro-turbojet engine fuel supply structure according to claim 1, characterized in that: A handle (13) is fixedly connected to the top of the dust cover (4), and a fuel pump (17) is provided in the middle of the crude oil pipe (3).

7. The micro-turbojet engine fuel supply structure according to claim 5, characterized in that: One end of the oil cleaning pipe (18) is connected to an atomizing nozzle (19), and an oil spray hole (20) is formed on the outer wall of the atomizing nozzle (19).

8. The micro-turbojet engine fuel supply structure according to claim 2, characterized in that: A plurality of adsorption balls (23) are fixedly connected to the bottom surface of the laminating plate (8), and an anti-slip groove (24) is provided on the outer wall of the closing cover (204).

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