An engine fuel supply device

Abstract

The present invention provides an engine fuel supply device, which relates to the technical field of aviation engine fuel supply control devices. The device includes a valve body, on which an oil filter, an ignition circuit electromagnet, an accumulator, a fuel supply circuit electromagnet and an electric pump are installed. The valve body is provided with a first oil delivery channel, a fuel supply valve oil outlet channel and a fourth oil delivery channel. The oil liquid in the first oil delivery channel is input into the oil filter, the accumulator, the fuel supply circuit electromagnet and the fuel supply valve oil outlet channel through the electric pump. The oil liquid in the first oil delivery channel is input into the oil filter, the accumulator, the ignition circuit electromagnet and the fourth oil delivery channel through the electric pump. Through the same valve body, the switching of the fuel supply pipeline is realized. By controlling the ignition circuit electromagnet and the fuel supply circuit electromagnet, the control of the oil liquid supply flow rate is realized. Overall, an integrated structure is formed, reducing the pipeline layout and connection, reducing the space occupation, providing convenience for the structural layout of the engine and reducing the difficulty.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation engine fuel supply control devices, and more particularly to an engine fuel supply device. Background Art

[0002] The fuel supply device is a key component of the aviation engine fuel supply system. Its main functions are to pressurize the fuel in the fuel tank, achieve ignition of the engine and switching of the fuel supply pipeline, and at the same time control the fuel supply flow of the engine according to the engine operating conditions. Specifically, it includes an electric pump, an ignition circuit electromagnet, a fuel supply circuit electromagnet, an oil filter, an accumulator, etc. Traditional engine fuel supply devices are mostly of a split structure with many connecting pipelines, which adds difficulties to the engine structure layout that is already tight in terms of structural space.

[0003] Therefore, there is an urgent need for an engine fuel supply device that can reduce pipeline connections and is beneficial to optimizing the engine space occupancy. Summary of the Invention

[0004] The purpose of the present invention is to provide an engine fuel supply device, which solves the technical problem of many connecting pipelines in the prior art that affect the engine structure layout. The many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An engine fuel supply device provided by the present invention includes a valve body. An oil filter, an ignition circuit electromagnet, an accumulator, a fuel supply circuit electromagnet and an electric pump are installed on the valve body. A first oil delivery channel, a fuel supply valve oil outlet channel and a fourth oil delivery channel are opened on the valve body. The oil in the first oil delivery channel is input into the oil filter, the accumulator, the fuel supply circuit electromagnet and the fuel supply valve oil outlet channel through the electric pump. The oil in the first oil delivery channel is input into the oil filter, the accumulator, the ignition circuit electromagnet and the fourth oil delivery channel through the electric pump.

[0007] Preferably, it further includes:

[0008] An electric pump inlet channel, which is opened in the valve body and is connected between the inlet of the electric pump and the first oil delivery channel;

[0009] An electric pump outlet channel, which is opened in the valve body and is connected between the outlet of the electric pump and the inlet of the oil filter.

[0010] Preferably, it further includes:

[0011] A filtering chamber, which is opened in the oil filter, and the oil outlet passage of the electric pump is communicated with the filtering chamber through the filter screen of the oil filter;

[0012] An oil filter oil outlet passage, which is opened in the valve body and communicated between the filtering chamber and the inlet of the oil supply passage electromagnet.

[0013] Preferably, it further includes:

[0014] An oil supply valve inlet passage, several of which are opened in the valve body and respectively communicated with the inlet side of the oil supply passage electromagnet;

[0015] An oil supply chamber, which is opened in the valve body and communicated between the outlet side of the oil supply passage electromagnet and the oil outlet passage of the oil supply valve.

[0016] Preferably, it further includes:

[0017] A second oil transmission passage, which is opened in the valve body and communicated with the accumulator, and the oil filter oil outlet passage is communicated with several oil supply valve inlet passages through the second oil transmission passage.

[0018] Preferably, it further includes:

[0019] An ignition valve inlet passage, which is opened in the valve body and communicated between the inlet side of the ignition circuit electromagnet and the second oil transmission passage;

[0020] An ignition valve outlet passage, which is opened in the valve body and communicated between the outlet side of the ignition circuit electromagnet and the fourth oil transmission passage.

[0021] Preferably, it further includes:

[0022] A check valve, which is installed on the valve body and communicated between the second oil transmission passage and the ignition valve inlet passage.

[0023] Preferably, a third oil transmission passage, a cross passage and a gap are sequentially communicated in the check valve, the third oil transmission passage is communicated with the second oil transmission passage, and the ignition valve inlet passage is communicated with the cross passage through the gap.

[0024] Preferably, the accumulator includes:

[0025] A housing, which is threadedly connected to the valve body;

[0026] A piston, which is slidably connected in the housing, and the first side of the piston is communicated with the second oil transmission passage;

[0027] A spring that abuts between the inside of the housing and the second side of the piston.

[0028] Preferably, it further includes:

[0029] A pressure stabilizing chamber located on the first side of the piston;

[0030] A fifth oil delivery channel opened on the housing, and the pressure stabilizing chamber is communicated with the second oil delivery channel through the fifth oil delivery channel.

[0031] In the technical solution provided by the present invention, an oil filter, an ignition circuit electromagnet, an accumulator, a fuel supply circuit electromagnet and an electric pump are installed on the same valve body. The ignition circuit electromagnet and the valve body form an ignition circuit solenoid valve, and the fuel supply circuit electromagnet and the valve body form a fuel supply circuit solenoid valve; wherein, the accumulator is communicated with the inlets of the ignition circuit electromagnet and the fuel supply circuit electromagnet, which can effectively stabilize the oil pressure and ensure stable fuel supply for the engine. The oil filter can effectively prevent the oil pipeline entering the engine from being blocked; at the same time, through the same valve body, the switching of the fuel supply pipeline is realized, and by controlling the ignition circuit electromagnet and the fuel supply circuit electromagnet, the control of the oil supply flow rate is realized, forming an integrated structure as a whole; this setting reduces the pipeline layout and connection, reduces the space occupation, provides convenience for the structural layout of the engine, and reduces the difficulty. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 is a schematic diagram of the connection between the oil inlet channel of the electric pump and the first oil delivery channel of the present invention;

[0035] Figure 3 is a schematic diagram of the connection between the oil outlet channel of the electric pump and the oil filter of the present invention;

[0036] Figure 4 is a schematic diagram of the connection between the filter chamber, the oil outlet channel of the oil filter and the second oil delivery channel of the present invention;

[0037] Figure 5 is a schematic diagram of the connection between the second oil delivery channel and the oil inlet channel of the fuel supply valve of the present invention;

[0038] Figure 6It is a schematic diagram showing the connection between the oil outlet passage of the fuel supply valve of the present invention and the fuel supply chamber;

[0039] Figure 7 It is a schematic diagram showing the connection between the second oil delivery passage of the present invention and the accumulator;

[0040] Figure 8 It is a schematic diagram showing the connection between the one-way valve of the present invention and the ignition path electromagnet.

[0041] In the figure, 1 - valve body; 2 - first oil delivery passage; 3 - oil filter; 4 - one-way valve; 5 - ignition path electromagnet; 6 - accumulator; 7 - fuel supply path electromagnet; 8 - electric pump; 9 - electric pump inlet passage; 10 - filtering chamber; 11 - electric pump outlet passage; 12 - oil filter outlet passage; 13 - second oil delivery passage; 14 - fuel supply valve inlet passage; 15 - fuel supply valve outlet passage; 16 - fuel supply chamber; 17 - third oil delivery passage; 18 - cross passage; 19 - gap; 20 - ignition valve inlet passage; 21 - fourth oil delivery passage; 22 - ignition valve outlet passage; 23 - voltage stabilizing chamber; 24 - fifth oil delivery passage; 25 - piston; 26 - housing; 27 - first sealing ring; 28 - spring; 29 - spring seat. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts fall within the scope protected by the present invention.

[0043] Refer to Figure 1-8 , a specific embodiment of the present invention provides an engine fuel supply device, which includes a valve body 1. An oil filter 3, an ignition path electromagnet 5, an accumulator 6, a fuel supply path electromagnet 7 and an electric pump 8 are installed on the valve body 1. The valve body 1 is provided with a first oil delivery passage 2, a fuel supply valve outlet passage 15 and a fourth oil delivery passage 21. The oil liquid in the first oil delivery passage 2 is input into the oil filter 3, the accumulator 6, the fuel supply path electromagnet 7 and the fuel supply valve outlet passage 15 through the electric pump 8. The oil liquid in the first oil delivery passage 2 is input into the oil filter 3, the accumulator 6, the ignition path electromagnet 5 and the fourth oil delivery passage 21 through the electric pump 8.

[0044] The fuel supply device is a key component of the fuel supply system of an aeroengine. Its main functions are to pressurize the fuel in the fuel tank, achieve ignition of the engine and switching of the fuel supply pipeline, and at the same time control the fuel supply flow rate of the engine according to the operating conditions of the engine. It specifically includes an electric pump, an ignition circuit electromagnet, a fuel supply circuit electromagnet, an oil filter, an accumulator, etc. The traditional engine fuel supply device mostly has a split structure with many connecting pipelines, which adds difficulties to the engine structure layout that is already tight in structural space. In this application, the oil filter 3, the ignition circuit electromagnet 5, the accumulator 6, the fuel supply circuit electromagnet 7 and the electric pump 8 are installed on the same valve body 1. The ignition circuit electromagnet 5 and the valve body 1 form an ignition circuit solenoid valve, and the fuel supply circuit electromagnet 7 and the valve body 1 form a fuel supply circuit solenoid valve; among them, the accumulator 6 is connected to the inlets of the ignition circuit electromagnet 5 and the fuel supply circuit electromagnet 7, which can effectively stabilize the oil pressure and ensure stable fuel supply for the engine. The oil filter 3 can effectively prevent the oil pipeline entering the engine from being blocked; at the same time, through the same valve body 1, the switching of the fuel supply pipeline is realized, and by controlling the ignition circuit electromagnet 5 and the fuel supply circuit electromagnet 7, the control of the oil supply flow rate is realized, and an integrated structure is formed as a whole; such a setting reduces the pipeline layout and connection, reduces the space occupation, provides convenience for the engine structure layout, and reduces the difficulty.

[0045] The further optimized solution also includes:

[0046] The electric pump inlet passage 9 is opened in the valve body 1 and is connected between the inlet of the electric pump 8 and the first oil transmission passage 2;

[0047] The electric pump outlet passage 11 is opened in the valve body 1 and is connected between the outlet of the electric pump 8 and the inlet of the oil filter 3.

[0048] The electric pump inlet passage 9 and the electric pump outlet passage 11 are respectively opened in the valve body 1 and are connected through starting the electric pump 8, reducing the connecting pipelines of the electric pump 8 and optimizing the installation space of the electric pump 8.

[0049] The further optimized solution also includes:

[0050] The filter chamber 10 is opened in the oil filter 3, and the electric pump outlet passage 11 is connected to the filter chamber 10 through the filter screen (not marked in the figure) of the oil filter 3;

[0051] The oil filter outlet passage 12 is opened in the valve body 1 and is connected between the filter chamber 10 and the inlet of the fuel supply circuit electromagnet 7.

[0052] A filter screen is provided inside the oil filter 3. The oil in the oil outlet passage 11 of the electric pump first enters the oil filter 3 and passes through the filter screen after being driven by the electric pump 8. The filtered oil enters the filter chamber 10 and then is pressed into the oil filter outlet passage 12 and arrives at the inlet side of the oil supply path electromagnet 7. Among them, the oil filter 3 includes a filter housing, and a number of through holes are provided on the filter housing, and the oil passes through the number of through holes and enters the oil filter 3.

[0053] A further optimized solution further includes:

[0054] The oil supply valve inlet passages 14, a number of oil supply valve inlet passages 14 are provided in the valve body 1 and are respectively connected to the inlet side of the oil supply path electromagnet 7;

[0055] The oil supply chamber 16, the oil supply chamber 16 is provided in the valve body 1 and is connected between the outlet side of the oil supply path electromagnet 7 and the oil supply valve outlet passage 15.

[0056] A number of oil supply valve inlet passages 14 are provided on the inlet side of the oil supply path electromagnet 7, and a number of oil supply valve inlet passages 14 are respectively provided in the valve body 1, which fully ensures the supply of the oil flow rate, reduces the connecting pipelines, and optimizes the installation space of the oil supply path electromagnet 7; the oil supply chamber 16 is located on the outlet side of the oil supply path electromagnet 7, and by starting the oil supply path electromagnet 7, the oil in the oil supply chamber 16 enters the engine through the oil supply valve outlet passage 15.

[0057] A further optimized solution further includes:

[0058] The second oil delivery passage 13, the second oil delivery passage 13 is provided in the valve body 1 and is communicated with the accumulator 6, and the oil filter outlet passage 12 is communicated with a number of oil supply valve inlet passages 14 through the second oil delivery passage 13.

[0059] The main function of the second oil delivery passage 13 is to disperse the oil in the second oil delivery passage 13 into a number of oil supply valve inlet passages 14 to ensure the smooth inlet of the oil supply path electromagnet 7.

[0060] A further optimized solution further includes:

[0061] The ignition valve inlet passage 20, the ignition valve inlet passage 20 is provided in the valve body 1 and is communicated between the inlet side of the ignition path electromagnet 5 and the second oil delivery passage 13;

[0062] The ignition valve outlet passage 22, the ignition valve outlet passage 22 is provided in the valve body 1 and is communicated between the outlet side of the ignition path electromagnet 5 and the fourth oil delivery passage 21.

[0063] The ignition valve inlet passage 20 and the ignition valve outlet passage 22 are respectively provided in the valve body 1, which reduces the connecting pipelines of the ignition path electromagnet 5 and optimizes the installation space of the ignition path electromagnet 5.

[0064] Further optimization solutions also include:

[0065] One-way valve 4 is installed on the valve body 1 and is connected between the second oil delivery channel 13 and the ignition valve oil inlet channel 20.

[0066] The main function of the one-way valve 4 is to prevent the oil fluid passing through the ignition path electromagnet 5 from flowing back, taking safety measures.

[0067] In a further optimization solution, a third oil delivery channel 17, a cross channel 18 and a gap 19 are sequentially connected in the one-way valve 4. The third oil delivery channel 17 is connected to the second oil delivery channel 13, and the ignition valve oil inlet channel 20 is connected to the cross channel 18 through the gap 19.

[0068] The oil fluid enters the one-way valve 4 through the second oil delivery channel 13, overcomes the elastic force to push open the one-way valve 4, and the oil fluid enters the ignition valve oil inlet channel 20 on the inlet side of the ignition path electromagnet 5 through the third oil delivery channel 17, the cross channel 18 and the gap 19; when the oil pressure in the channel decreases to a specified value or disappears, the one-way valve 4 automatically closes under the action of the elastic force.

[0069] In a further optimization solution, the accumulator 6 includes:

[0070] A housing 26, and the housing 26 is threadedly connected to the valve body 1;

[0071] A piston 25, and the piston 25 is slidably connected inside the housing 26. The first side of the piston 25 is connected to the second oil delivery channel 13;

[0072] A spring 28, and the spring 28 abuts between the inside of the housing 26 and the second side of the piston 25.

[0073] When the oil pressure in the second oil delivery channel 13 increases, the spring 28 is compressed through the piston 25 to partially release the oil pressure and stabilize the oil pressure; when the oil pressure in the second oil delivery channel 13 decreases, the spring 28 pushes the piston 25, and the piston 25 extrudes the oil fluid to achieve the function of stabilizing the oil pressure. Among them, the accumulator 6 further includes a spring seat 29. The spring seat 29 is restricted inside the housing 26 by an elastic retaining ring, and the spring 28 abuts between the spring seat 29 and the second side of the piston 25; a first sealing ring 27 is sleeved on the peripheral side of the piston 25, and the piston 25 and the inner wall of the housing 26 are sealed through the first sealing ring 27.

[0074] Further optimization solutions also include:

[0075] A pressure stabilizing cavity 23, and the pressure stabilizing cavity 23 is located on the first side of the piston 25;

[0076] A fifth oil delivery channel 24, and the fifth oil delivery channel 24 is opened on the housing 26. The pressure stabilizing cavity 23 is connected to the second oil delivery channel 13 through the fifth oil delivery channel 24.

[0077]

[0077] The oil fluid enters into the pressure stabilizing cavity 23 through the fifth oil transmission channel 24 and contacts with the first side of the piston 25; the inner diameter of the fifth oil transmission channel 24 is smaller than those of the second oil transmission channel 13 and the pressure stabilizing cavity 23. During the process of controlling the oil pressure, it can effectively prevent the oil flow rate through the fifth oil transmission channel 24 from being too large, which may cause sudden fluctuations and large fluctuation amplitudes of the oil pressure, playing a role in stabilizing the pressure.

[0078]

[0078] As a further optimized solution, the electric pump 8 includes a motor and a gear pump. The motor is a canned motor, and the oil fluid (fuel) circulates in the rotor cavity of the motor.

[0079]

[0079] ]Overall, for the oil supply device of the present invention, by integrating the electric pump 8, the ignition path electromagnet 5, the oil supply path electromagnet 7, the oil filter 3, the accumulator 6, etc. together, the volume saving rate is more than 30% compared with the traditional split-type oil supply device, facilitating the engine structure layout; for the oil supply device of the present invention, the accumulator 6 is used for pressure compensation, reducing the fluctuations of the oil supply pressure and flow rate, and improving the steady-state performance of the engine.

[0080]

[0080] It should be noted that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. described herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0081]

[0081] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0082]

[0082] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An engine oil supply device, characterized in that: The invention comprises a valve body (1), on which an oil filter (3), an ignition circuit electromagnet (5), a pressure accumulator (6), an oil supply circuit electromagnet (7) and an electric pump (8) are mounted, and on which a first oil delivery channel (2), an oil supply valve oil outlet channel (15) and a fourth oil delivery channel (21) are provided, and oil in the first oil delivery channel (2) is input into the oil filter (3), the pressure accumulator (6), the oil supply circuit electromagnet (7) and the oil supply valve oil outlet channel (15) through the electric pump (8), and oil in the first oil delivery channel (2) is input into the oil filter (3), the pressure accumulator (6), the ignition circuit electromagnet (5) and the fourth oil delivery channel (21) through the electric pump (8); It also comprises: an electric pump oil inlet passage (9), the electric pump oil inlet passage (9) being opened in the valve body (1) and communicating between the inlet of the electric pump (8) and the first oil delivery passage (2); An electric pump oil outlet passage (11), the electric pump oil outlet passage (11) being disposed in the valve body (1) and communicating between an outlet of the electric pump (8) and an inlet of the oil filter (3); a filter chamber (10), the filter chamber (10) being disposed in the oil filter (3), the electric pump oil outlet passage (11) being in communication with the filter chamber (10) via a filter screen of the oil filter (3); An oil filter outlet passage (12), the oil filter outlet passage (12) being disposed in the valve body (1) and communicating between the filter chamber (10) and an inlet of the oil supply circuit electromagnet (7); An oil supply valve oil inlet passage (14), wherein a plurality of the oil supply valve oil inlet passages (14) are disposed in the valve body (1) and are respectively connected to the inlet side of the oil supply circuit electromagnet (7); An oil supply chamber (16), the oil supply chamber (16) being disposed in the valve body (1) and communicating between the outlet side of the oil supply circuit electromagnet (7) and the oil outlet passage (15) of the oil supply valve; a second oil delivery passage (13), the second oil delivery passage (13) being disposed in the valve body (1) and being in communication with the pressure accumulator (6); the oil filter outlet passage (12) being in communication with a plurality of oil supply valve oil inlet passages (14) via the second oil delivery passage (13); An ignition valve oil inlet passage (20), the ignition valve oil inlet passage (20) being disposed in the valve body (1) and communicating between the inlet side of the ignition circuit electromagnet (5) and the second oil delivery passage (13); An ignition valve oil outlet passage (22), the ignition valve oil outlet passage (22) being disposed in the valve body (1) and connected between the outlet side of the ignition circuit electromagnet (5) and the fourth oil delivery passage (21).

2. The engine oil supply device according to claim 1, characterized in that: Also includes: A one-way valve (4), the one-way valve (4) being mounted on the valve body (1) and connected between the second oil delivery channel (13) and the ignition valve oil inlet channel (20).

3. The engine oil supply device according to claim 2, characterized in that: The one-way valve (4) is provided with a third oil delivery channel (17), a cross channel (18) and a gap (19) which are connected in sequence; the third oil delivery channel (17) is connected to the second oil delivery channel (13); and the ignition valve oil inlet channel (20) is connected to the cross channel (18) through the gap (19).

4. The engine oil supply device according to claim 1, characterized in that: The pressure accumulator (6) comprises: a housing (26), wherein the housing (26) is threadedly connected to the valve body (1); a piston (25), the piston (25) being slidably connected in the housing (26), and a first side of the piston (25) being in communication with the second oil delivery passage (13); A spring (28) is abutted between the inside of the housing (26) and the second side of the piston (25).

5. The engine oil supply device according to claim 4, characterized in that: Also includes: A pressure stabilizing chamber (23), the pressure stabilizing chamber (23) being located on a first side of the piston (25); A fifth oil delivery channel (24), wherein the fifth oil delivery channel (24) is opened on the housing (26), and the pressure stabilizing chamber (23) is connected to the second oil delivery channel (13) via the fifth oil delivery channel (24).

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