Engine oil supply device

Abstract

The invention provides an engine fuel supply device, and relates to the technical field of aero-engine fuel supply control devices. The device comprises a valve body, an oil filter, an ignition circuit electromagnet, a pressure accumulator, an oil supply circuit electromagnet and an electric pump are installed on the valve body, and a first oil conveying channel, an oil supply valve oil outlet channel and a fourth oil conveying channel are formed in the valve body. Oil in the first oil conveying channel is input into the oil filter, the pressure accumulator, the oil supply path electromagnet and the oil supply valve oil outlet channel through the electric pump, and oil in the first oil conveying channel is input into the oil filter, the pressure accumulator, the ignition path electromagnet and the fourth oil conveying channel through the electric pump. Switching of oil supply pipelines is achieved through the same valve body, control over the oil supply flow is achieved through control over the ignition circuit electromagnet and the oil supply circuit electromagnet, an integrated structure is formed on the whole, pipeline arrangement and connection are reduced, occupied space is reduced, convenience is provided for structural layout of an engine, and difficulty is lowered.

Description

Technical Field

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

[0002] The fuel supply device is a key component of the aircraft engine fuel supply system. Its main function is to pressurize the fuel in the fuel tank, realize the engine ignition, switch the fuel supply pipeline, and control the engine fuel supply flow according to the engine working conditions. It specifically includes electric pumps, ignition circuit electromagnets, fuel supply circuit electromagnets, oil filters, accumulators, etc. Traditional engine fuel supply devices are mostly split structures with many connecting pipelines, which adds difficulties to the engine structure layout, which already has tight structural space.

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

[0004] The purpose of the present invention is to provide an engine oil supply device, which solves the technical problem that there are too many connecting pipelines in the prior art, which affects the engine structure layout. The preferred technical solution among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0005] To achieve the above object, the present invention provides the following technical solutions: The present invention provides an engine oil supply device, comprising a valve body, on which an oil filter, an ignition circuit electromagnet, an accumulator, an oil supply circuit electromagnet and an electric pump are installed, and a first oil delivery channel, an oil supply valve oil outlet channel and a fourth oil delivery channel are opened on the valve body, and the oil in the first oil delivery channel is input into the oil filter, the accumulator, the oil supply circuit electromagnet and the oil supply valve oil outlet channel through the electric pump, and 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.

[0006] Preferably, it also includes: an electric pump oil inlet passage, the electric pump oil inlet passage being disposed in the valve body and communicating between the inlet of the electric pump and the first oil delivery passage; The electric pump oil outlet passage is disposed in the valve body and is connected between the outlet of the electric pump and the inlet of the oil filter.

[0007] Preferably, it also includes: A filter chamber, wherein the filter chamber is disposed in the oil filter, and the oil outlet passage of the electric pump is connected to the filter chamber through a filter screen of the oil filter; An oil filter oil outlet passage is provided in the valve body and is connected between the filter chamber and the oil supply circuit electromagnet inlet.

[0008] Preferably, it also includes: Oil supply valve oil inlet channels, a plurality of said oil supply valve oil inlet channels are provided in said valve body and are respectively connected to the inlet side of said oil supply circuit electromagnet; The oil supply chamber is disposed in the valve body and is connected between the outlet side of the oil supply circuit electromagnet and the oil outlet passage of the oil supply valve.

[0009] Preferably, it also includes: A second oil delivery channel is provided in the valve body and communicated with the accumulator, and the oil filter oil channel is communicated with a plurality of oil supply valve oil inlet channels through the second oil delivery channel.

[0010] Preferably, it also includes: An ignition valve oil inlet passage, the ignition valve oil inlet passage is disposed in the valve body and is connected between the inlet side of the ignition circuit electromagnet and the second oil delivery passage; An ignition valve oil outlet passage is provided in the valve body and is connected between the outlet side of the ignition circuit electromagnet and the fourth oil delivery passage.

[0011] Preferably, it also includes: A one-way valve is installed on the valve body and is connected between the second oil delivery channel and the ignition valve oil inlet channel.

[0012] Preferably, the one-way valve is provided with a third oil delivery channel, a cross channel and a gap which are connected in sequence, the third oil delivery channel is connected with the second oil delivery channel, and the ignition valve oil inlet channel is connected with the cross channel through the gap.

[0013] Preferably, the accumulator comprises: A housing, the housing being threadedly connected to the valve body; a piston, the piston being slidably connected in the housing, and a first side of the piston being in communication with the second oil delivery passage; A spring is abutted between the interior of the housing and the second side of the piston.

[0014] Preferably, it also includes: a pressure stabilizing chamber, the pressure stabilizing chamber being located on a first side of the piston; A fifth oil delivery channel is provided on the housing, and the pressure stabilizing chamber is connected with the second oil delivery channel through the fifth oil delivery channel.

[0015] In the technical solution provided by the present invention, the oil filter, the ignition circuit electromagnet, the accumulator, the oil supply circuit electromagnet and the 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 oil supply circuit electromagnet and the valve body form an oil supply circuit solenoid valve; wherein, the accumulator is connected with the inlet of the ignition circuit electromagnet and the oil supply circuit electromagnet, which can effectively stabilize the oil pressure and ensure the stable oil supply to the engine, and the oil filter can effectively avoid the blockage of the oil pipeline entering the engine; at the same time, the oil supply pipeline is switched through the same valve body, and the oil supply flow is controlled by controlling the ignition circuit electromagnet and the oil supply circuit electromagnet, thereby forming an integrated structure as a whole; such a configuration reduces the arrangement and connection of pipelines, reduces space occupancy, provides convenience for the structural layout of the engine, and reduces the difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It 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; Figure 3 It is a schematic diagram of the connection between the oil outlet channel of the electric pump and the oil filter of the present invention; Figure 4 It is a schematic diagram of the connection between the filter chamber, the oil filter oil outlet passage and the second oil delivery passage of the present invention; Figure 5 It is a schematic diagram showing the connection between the second oil delivery channel and the oil inlet channel of the oil supply valve of the present invention; Figure 6 It is a schematic diagram of the connection between the oil outlet passage and the oil supply chamber of the oil supply valve of the present invention; Figure 7 It is a schematic diagram of the connection between the second oil delivery channel and the accumulator of the present invention; Figure 8 It is a schematic diagram of the connection between the one-way valve and the ignition circuit electromagnet of the present invention.

[0018] In the figure, 1-valve body; 2-first oil delivery channel; 3-oil filter; 4-check valve; 5-ignition circuit electromagnet; 6-accumulator; 7-oil supply circuit electromagnet; 8-electric pump; 9-electric pump oil inlet channel; 10-filter chamber; 11-electric pump oil outlet channel; 12-oil filter oil outlet channel; 13-second oil delivery channel; 14-oil supply valve oil inlet channel; 15-oil supply valve oil outlet channel; 16-oil supply chamber; 17-third oil delivery channel; 18-cross channel; 19-gap; 20-ignition valve oil inlet channel; 21-fourth oil delivery channel; 22-ignition valve oil outlet channel; 23-pressure stabilizing chamber; 24-fifth oil delivery channel; 25-piston; 26-housing; 27-first sealing ring; 28-spring; 29-spring seat. DETAILED DESCRIPTION

[0019] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0020] refer to Figure 1-8 A specific embodiment of the present invention provides an engine fuel supply device, including a valve body 1, on which an oil filter 3, an ignition circuit electromagnet 5, an accumulator 6, an oil supply circuit electromagnet 7 and an electric pump 8 are installed, and a first oil delivery channel 2, an oil supply valve oil outlet channel 15 and a fourth oil delivery channel 21 are opened on the valve body 1. The oil in the first oil delivery channel 2 is input into the oil filter 3, the accumulator 6, the oil supply circuit electromagnet 7 and the oil supply valve oil outlet channel 15 through the electric pump 8, and the oil in the first oil delivery channel 2 is input into the oil filter 3, the accumulator 6, the ignition circuit electromagnet 5 and the fourth oil delivery channel 21 through the electric pump 8.

[0021] The fuel supply device is a key component of the aircraft engine fuel supply system. Its main function is to pressurize the fuel in the fuel tank, realize the engine ignition, switch the fuel supply pipeline, and control the engine fuel supply flow according to the engine working conditions. It specifically includes electric pumps, ignition circuit electromagnets, fuel supply circuit electromagnets, oil filters, accumulators, etc. Traditional engine fuel supply devices are mostly split structures with many connecting pipelines, which adds difficulties to the engine structure layout, which already has tight structural space. In the present application, the oil filter 3, the ignition circuit electromagnet 5, the accumulator 6, the oil 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 oil supply circuit electromagnet 7 and the valve body 1 form an oil supply circuit solenoid valve; wherein, the accumulator 6 is connected with the inlet of the ignition circuit electromagnet 5 and the oil supply circuit electromagnet 7, which can effectively stabilize the oil pressure and ensure the stable oil supply to the engine, and the oil filter 3 can effectively avoid the blockage of the oil pipeline entering the engine; at the same time, the oil supply pipeline is switched through the same valve body 1, and the oil supply flow is controlled by controlling the ignition circuit electromagnet 5 and the oil supply circuit electromagnet 7, forming an integrated structure as a whole; such a setting reduces the arrangement and connection of pipelines, reduces space occupancy, provides convenience for the structural layout of the engine, and reduces the difficulty.

[0022] Further optimization plans also include: The electric pump oil inlet passage 9 is provided in the valve body 1 and is connected between the inlet of the electric pump 8 and the first oil delivery passage 2; The electric pump oil outlet passage 11 is opened in the valve body 1 and communicates between the outlet of the electric pump 8 and the inlet of the oil filter 3 .

[0023] The electric pump oil inlet channel 9 and the electric pump oil outlet channel 11 are respectively opened in the valve body 1 and are connected by starting the electric pump 8, thereby reducing the connecting pipelines of the electric pump 8 and optimizing the installation space of the electric pump 8.

[0024] Further optimization plans also include: The filter chamber 10 is provided in the oil filter 3, and the oil outlet passage 11 of the electric pump is connected with the filter chamber 10 through the filter screen (not marked in the figure) of the oil filter 3; The oil filter outlet passage 12 is provided in the valve body 1 and is connected between the filter chamber 10 and the inlet of the oil supply circuit electromagnet 7 .

[0025] A filter screen is provided in the oil filter 3. The oil in the electric pump oil outlet channel 11 is driven by the electric pump 8 and first enters the oil filter 3 and passes through the filter screen. The filtered oil enters the filter chamber 10 and is then pressed into the oil filter oil outlet channel 12 to the inlet side of the oil supply path electromagnet 7. The oil filter 3 includes a filter housing, and a plurality of through holes are provided on the filter housing. The oil enters the oil filter 3 through the plurality of through holes.

[0026] Further optimization plans also include: The oil supply valve oil inlet passage 14, a plurality of oil supply valve oil inlet passages 14 are provided in the valve body 1 and are respectively connected to the inlet side of the oil supply circuit electromagnet 7; The oil supply chamber 16 is provided in the valve body 1 and is connected between the outlet side of the oil supply circuit electromagnet 7 and the oil supply valve oil outlet passage 15 .

[0027] A plurality of oil supply valve oil inlet channels 14 are provided on the inlet side of the oil supply circuit electromagnet 7, and the plurality of oil supply valve oil inlet channels 14 are respectively opened in the valve body 1, which fully ensures the supply of oil flow, reduces the connecting pipelines, and optimizes the installation space of the oil supply circuit electromagnet 7; the oil supply chamber 16 is located on the outlet side of the oil supply circuit electromagnet 7, and by starting the oil supply circuit electromagnet 7, the oil in the oil supply chamber 16 enters the engine through the oil supply valve oil outlet channel 15.

[0028] Further optimization plans also include: The second oil delivery channel 13 is opened in the valve body 1 and communicated with the accumulator 6 . The oil filter oil passage 12 is communicated with a plurality of oil supply valve oil inlet passages 14 through the second oil delivery channel 13 .

[0029] The main function of the second oil delivery channel 13 is to distribute the oil in the second oil delivery channel 13 to a plurality of oil supply valve oil inlet channels 14, so as to ensure that the oil supply circuit electromagnet 7 can smoothly supply oil.

[0030] Further optimization plans also include: The ignition valve oil inlet passage 20 is provided in the valve body 1 and communicates between the inlet side of the ignition circuit electromagnet 5 and the second oil delivery passage 13; The ignition valve oil outlet passage 22 is opened in the valve body 1 and communicates between the outlet side of the ignition circuit electromagnet 5 and the fourth oil delivery passage 21 .

[0031] The ignition valve oil inlet channel 20 and the ignition valve oil outlet channel 22 are respectively opened in the valve body 1, which reduces the connection pipelines of the ignition circuit electromagnet 5 and optimizes the installation space of the ignition circuit electromagnet 5.

[0032] Further optimization plans also include: The one-way valve 4 is mounted on the valve body 1 and communicates between the second oil delivery channel 13 and the ignition valve oil inlet channel 20 .

[0033] The main function of the one-way valve 4 is to prevent the oil from flowing back through the ignition circuit electromagnet 5 and take safety measures.

[0034] As a further optimization scheme, a third oil delivery channel 17 , a cross channel 18 and a gap 19 which are connected in sequence are provided 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 .

[0035] The oil enters the one-way valve 4 through the second oil delivery channel 13, and overcomes the elastic force to push the one-way valve 4 open. The oil enters the ignition valve oil inlet channel 20 on the inlet side of the ignition circuit 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 is automatically closed under the action of the elastic force.

[0036] Further optimizing the scheme, 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 is slidably connected in the housing 26, and a first side of the piston 25 is connected to the second oil delivery channel 13; The spring 28 abuts between the inside of the housing 26 and the second side of the piston 25 .

[0037] When the oil pressure in the second oil delivery channel 13 increases, the spring 28 is compressed by the piston 25, so that the oil pressure is partially released and the oil pressure is stabilized; when the oil pressure in the second oil delivery channel 13 decreases, the spring 28 pushes the piston 25, and the piston 25 squeezes the oil to stabilize the oil pressure. The accumulator 6 further includes a spring seat 29, which is restricted in 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; the first sealing ring 27 is sleeved on the circumference of the piston 25, and the piston 25 and the inner wall of the housing 26 are sealed by the first sealing ring 27.

[0038] Further optimization plans also include: A pressure stabilizing chamber 23, the pressure stabilizing chamber 23 is located on a first side of the piston 25; The fifth oil delivery channel 24 is opened on the housing 26 , and the pressure stabilizing chamber 23 is connected with the second oil delivery channel 13 through the fifth oil delivery channel 24 .

[0039] The oil enters the pressure stabilizing chamber 23 through the fifth oil delivery channel 24 and contacts the first side of the piston 25; the inner diameter of the fifth oil delivery channel 24 is smaller than the inner diameters of the second oil delivery channel 13 and the pressure stabilizing chamber 23. In the process of controlling the oil pressure, it is effectively prevented that the flow of oil through the fifth oil delivery channel 24 is too large, causing sudden fluctuations in oil pressure and large fluctuations, thereby playing a role in stabilizing the pressure.

[0040] According to a further optimization scheme, the electric pump 8 includes a motor and a gear pump. The motor is a shielded motor, and the oil (fuel) circulates in the motor rotor cavity.

[0041] On the whole, the fuel supply device of the present invention saves more than 30% of the volume compared with the traditional split fuel supply device by integrating the electric pump 8, the ignition circuit electromagnet 5, the fuel supply circuit electromagnet 7, the oil filter 3, the accumulator 6, etc., which facilitates the engine structure layout; the fuel supply device of the present invention uses the accumulator 6 for pressure compensation, reduces the fluctuation of the fuel supply pressure and flow, and improves the steady-state performance of the engine.

[0042] It should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. used herein to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0043] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on 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 the 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 the 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).

2. The engine oil supply device according to claim 1, characterized in that: Also includes: An electric pump oil inlet passage (9), the electric pump oil inlet passage (9) being disposed in the valve body (1) and communicating between an 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 opened in the valve body (1) and communicating between the outlet of the electric pump (8) and the inlet of the oil filter (3).

3. The engine oil supply device according to claim 2, characterized in that: Also includes: 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) is provided in the valve body (1) and is connected between the filter chamber (10) and an inlet of the oil supply circuit electromagnet (7).

4. The engine oil supply device according to claim 3, characterized in that: Also includes: 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) is provided in the valve body (1) and is connected between the outlet side of the oil supply circuit electromagnet (7) and the oil outlet passage (15) of the oil supply valve.

5. The engine oil supply device according to claim 4, characterized in that: Also includes: A second oil delivery passage (13), the second oil delivery passage (13) is opened in the valve body (1) and is connected to the pressure accumulator (6), and the oil filter oil outlet passage (12) is connected to a plurality of oil supply valve oil inlet passages (14) through the second oil delivery passage (13).

6. The engine oil supply device according to claim 5, characterized in that: Also includes: 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).

7. The engine oil supply device according to claim 6, 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).

8. The engine oil supply device according to claim 7, 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).

9. The engine oil supply device according to claim 5, characterized in that: The pressure accumulator (6) comprises: A housing (26), the housing (26) being 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).

10. The engine oil supply device according to claim 9, 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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