Combined excess control oil delivery control valve and method

Abstract

The application discloses a combined redundancy control oil delivery control valve and method. The left side of the shell is located in the inside of the oil tank, and the right side is located in the outside of the oil tank. The upper left side of the shell is provided with a float valve assembly, the lower left side is provided with an oil delivery channel, and the upper right side is provided with an electromagnetic valve assembly. The main valve assembly for controlling the opening and closing of the oil delivery channel is arranged between the inlet and the outlet of the oil delivery channel. The main valve assembly comprises a cylindrical slide rail cavity arranged at the lower left side of the shell, a main valve slidably connected in the cylindrical slide rail cavity, a valve cavity arranged in the cylindrical slide rail cavity at the left side of the main valve, a closed control cavity arranged in the cylindrical slide rail cavity at the right side of the main valve, and a main valve spring arranged at the side of the control cavity, wherein the valve cavity is communicated with the outlet of the oil delivery channel, and the control cavity is communicated with a pressure relief channel, and the electromagnetic valve assembly and the float valve assembly are connected in series on the pressure relief channel. The application overcomes the problems of complex structure and large size in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of fluid machinery, and relates to a combined redundant control oil delivery control valve and method. Background Technology

[0002] During routine aircraft maintenance and mission flights, different types of fuel need to be delivered to different fuel tanks. The operation of the fuel supply control valve is to control the flow and direction of fuel, ensuring a stable fuel supply to the engine under different flight conditions. The reliability, ease of maintenance, and role of the fuel supply control valve in optimizing fuel consumption and maintaining aircraft center stability are all crucial to flight safety.

[0003] Traditional oil transfer control valves typically employ a separate design for the main valve and float. The disadvantage of this design is that a connecting structure is required to connect the control pipelines of both valves, which increases the product's size. Furthermore, the mechanical control pipelines require anti-loosening design after installation, leading to inconvenient maintenance. This design fails to meet the current technical requirements for miniaturization and ease of maintenance in on-board products. Summary of the Invention

[0004] The purpose of this invention is to provide a combined redundant control fuel delivery valve for fuel delivery control in aircraft fuel tanks, overcoming the problems of complex structure and large size in existing technologies.

[0005] The technical solution of the present invention is as follows: A combined redundant control oil delivery control valve includes a housing, with the left side of the housing located inside the oil tank and the right side located outside the oil tank; a float valve assembly is provided on the upper left side of the housing, an oil delivery channel is provided on the lower left side, and an electromagnetic valve assembly is provided on the upper right side; a main valve assembly for controlling the opening / closing of the oil delivery channel is provided between the inlet and outlet of the oil delivery channel; the main valve assembly includes a cylindrical slide rail cavity located on the lower left side of the housing, with a main valve slidably connected inside the cylindrical slide rail cavity; a valve cavity is provided in the cylindrical slide rail cavity to the left of the main valve, and the valve cavity is connected to the outlet of the oil delivery channel; the cylindrical slide rail cavity to the right of the main valve is a closed control cavity; a main valve spring is provided on the side of the main valve located in the control cavity; the control cavity is connected to a pressure relief channel, and an electromagnetic valve assembly and a float valve assembly are connected in series on the pressure relief channel.

[0006] In the aforementioned combined redundant control oil delivery control valve, the control chamber is connected to the oil delivery channel inlet via a pressure-inducing channel.

[0007] In the aforementioned combined redundant control oil delivery control valve, a magnet is installed at one end of the control cavity of the main valve, and a position sensor is installed on the lower right side of the housing. The magnet and the position sensor are aligned in the horizontal direction.

[0008] In the aforementioned combined redundant control oil supply control valve, the float valve assembly includes a float and a float valve; a threaded structure is provided on the upper left side of the housing, the threaded structure is located at the end of the pressure relief channel, and the float valve is threadedly connected to the threaded structure; the threaded structure is also provided with a fork lug, which is rotatably connected to the support arm of the float; when the float rises to the emergency closing height, the float drives the float valve to close the pressure relief channel.

[0009] In the aforementioned combined redundant control oil delivery control valve, the float valve assembly is covered by a float cover.

[0010] In the aforementioned combined redundant control oil delivery control valve, a flow-limiting plug is installed between the oil delivery channel inlet and the pressure tapping channel.

[0011] In the aforementioned combined redundant control oil delivery control valve, the electromagnetic valve assembly includes an armature assembly for controlling the opening / closing of the pressure relief channel and a coil for driving the armature assembly to move.

[0012] In the aforementioned combined redundant control oil supply control valve, the position sensor is pressed against the right side by a wave spring and an adapter seat; the other end of the adapter seat is connected to an electrical cavity located at the right end of the coil, and a socket is provided on the right side of the electrical cavity; the wire of the position sensor enters the electrical cavity through the hollow channel of the adapter seat and is electrically connected to the electrical components.

[0013] In the aforementioned combined redundant control oil transfer control valve, a spring assembly is provided on the upper side of the support arm to ensure that the float always remains in its initial position when it is not subjected to the buoyancy of the fuel in the tank.

[0014] A working method for a combined redundant control oil delivery control valve as described above: when refueling the oil tank through the oil delivery channel inlet, the electromagnetic valve assembly opens the pressure relief channel, and the control chamber can normally relieve pressure. At this time, the inflow pressure at the oil delivery channel inlet is greater than the design spring force of the main valve spring, and the main valve is pushed open, so that the oil delivery channel inlet is connected to the oil delivery channel outlet through the valve cavity for normal refueling.

[0015] In the aforementioned combined redundant control oil delivery control valve operation method, when the oil tank fills to the design requirement, the electromagnetic valve assembly is de-energized to close the pressure relief channel, and the control chamber is pressurized to form a dead chamber. At this time, the main valve closes the valve chamber under the action of the chamber pressure and the main valve spring, and the refueling stops.

[0016] In the aforementioned combined redundant control oil transfer control valve operation method, when the oil tank fills to the emergency closing height of the float valve assembly, the float rises and lifts the float valve to close the pressure relief channel, and the control chamber builds up pressure to form a dead chamber. At this time, the main valve closes the valve chamber under the action of the chamber pressure and the main valve spring, and the oil filling stops.

[0017] In the aforementioned combined redundant control oil delivery control valve working method, during the movement of the main valve, the distance between the magnet and the position sensor changes. The position sensor converts the magnetic signal emitted by the magnet into a voltage signal, which is then processed and output as a detection signal.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] This invention combines a conventional oil filling valve and an oil level controller into a single unit; and places the product's power supply outside the oil tank, thus improving the product's safety.

[0020] This invention can be used in specific fuel tank delivery systems, ensuring sufficient fuel volume to meet usage requirements. The redundant design of the series-connected electromagnetic valve assembly and float valve assembly guarantees reliable and safe control of fuel tank pressure. It also features status monitoring capabilities, facilitating fault location during use and maintenance. The product design ensures that the electrical units (electromagnetic valve assembly, position sensor, etc., located on the right side of the housing) are physically isolated from the fuel, enhancing the safety margin of the refueling system and ensuring the safety of the flight platform. Compared to existing technologies, this invention has advantages such as relatively simple structure and small size, and can be widely applied to fuel tank pressure control in various aircraft, including airplanes and helicopters.

[0021] By adopting an integrated design, the product achieves the same functionality while effectively reducing weight. Based on conventional control piping estimates, reducing piping and other connectors can reduce weight by over 200g; the float assembly interface is simplified, reducing its size by 20cm. 3 With the integrated float, the valve has redundant control, which can effectively ensure the overall closure reliability of the product. Attached Figure Description

[0022] Figure 1 This is a top view of the present invention;

[0023] Figure 2 yes Figure 1 Sectional view at point AA;

[0024] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 4 This is a view of the inlet and outlet ends of a combined redundant control oil delivery control valve according to the present invention.

[0026] The following are the labels in the diagram: 1-Housing, 2-Oil tank, 3-Float valve assembly, 31-Float, 32-Float valve, 33-Support arm, 34-Spring assembly, 4-Electromagnetic valve assembly, 41-Armature assembly, 42-Coil, 5-Main valve assembly, 51-Main valve spring, 52-Main valve, 53-Valve cavity, 54-Control cavity, 6-Oil delivery channel outlet, 7-Pressure relief channel, 8-Pressure tapping channel, 9-Magnet, 10-Position sensor, 11-Threaded structure, 12-Fork lug, 13-Flow restrictor, 14-Wave spring, 15-Adapter, 16-Electrical cavity, 17-Float outer cover, 18-Oil delivery channel inlet, 19-Socket. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0029] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] Example 1. A combined redundant control oil delivery control valve, see [link to example]. Figures 1-4The system includes a housing 1, with the left side of the housing 1 located inside the oil tank 2 and the right side located outside the oil tank 2. A float valve assembly 3 is located on the upper left side of the housing 1, an oil delivery channel is located on the lower left side, and an electromagnetic valve assembly 4 is located on the upper right side. A main valve assembly 5 is located between the inlet and outlet of the oil delivery channel to control the opening and closing of the oil delivery channel. The main valve assembly 5 includes a cylindrical slide rail cavity located on the lower left side of the housing 1, with a main valve 52 slidably connected within the cylindrical slide rail cavity. A valve cavity 53 is located within the cylindrical slide rail cavity to the left of the main valve 52, and the valve cavity 53 is connected to the oil delivery channel outlet 6. The cylindrical slide rail cavity to the right of the main valve 52 is a closed control cavity 54. A main valve spring 51 is located on the side of the main valve 52 adjacent to the control cavity 54. The control cavity 54 is connected to a pressure relief channel 7, and the electromagnetic valve assembly 4 and the float valve assembly 3 are connected in series on the pressure relief channel 7.

[0031] The aforementioned control chamber 54 is connected to the oil delivery channel inlet 18 via the pressure channel 8.

[0032] The aforementioned main valve 52 is equipped with a magnet 9 at one end of the control cavity 54, and a position sensor 10 is installed on the lower right side of the housing 1. The magnet 9 and the position sensor 10 are aligned in the horizontal direction.

[0033] The aforementioned float valve assembly 3 includes a float 31 and a float valve 32; a threaded structure 11 is provided on the upper left side of the housing 1, the threaded structure 11 is located at the end of the pressure relief channel 7, and the float valve 32 is threadedly connected to the threaded structure 11; the threaded structure 11 is also provided with a fork lug 12, which is rotatably connected to the support arm 33 of the float 31; when the float 31 rises to the emergency closing height, the float 31 drives the float valve 32 to close the pressure relief channel 7.

[0034] The aforementioned float valve assembly 3 is covered by a float cover 17.

[0035] A flow-limiting plug 13 is installed between the oil delivery channel inlet 18 and the pressure channel 8.

[0036] The aforementioned electromagnetic valve assembly 4 includes an armature assembly 41 for controlling the opening / closing of the pressure relief channel 7, and a coil 42 for driving the armature assembly 41 to move.

[0037] The aforementioned position sensor 10 is pressed on the right side by a wave spring 14 and an adapter 15; the other end of the adapter 15 is connected to an electrical cavity 16 located at the right end of the coil 42, and a socket 19 is provided on the right side of the electrical cavity 16; the wires of the position sensor 10 enter the electrical cavity 16 through the hollow channel of the adapter 15 and are electrically connected to the electrical components.

[0038] The aforementioned support arm 33 is provided with a spring assembly 34 on its upper side to ensure that the float 31 remains in its initial position when it is not subjected to the buoyancy of the fuel in the fuel tank 2.

[0039] The aforementioned combined redundant control oil supply control valve operates as follows: when refueling the oil tank 2 through the oil supply channel inlet 18, the electromagnetic valve assembly 4 opens the pressure relief channel 7, and the control chamber 54 can normally relieve pressure. At this time, the incoming pressure of the oil supply channel inlet 18 is greater than the designed elastic force value of the main valve spring 51, and the main valve 52 is pushed open, so that the oil supply channel inlet 18 is connected to the oil supply channel outlet 6 through the valve chamber 53 for normal refueling.

[0040] When the fuel tank 2 reaches the design requirement, the electromagnetic valve assembly 4 is de-energized and closes the pressure relief channel 7. The control chamber 54 is pressurized to form a dead chamber. At this time, the main valve 52 closes the valve chamber 53 under the action of the chamber pressure and the main valve spring 51, and the refueling stops.

[0041] When the fuel tank 2 reaches the emergency closing height of the float valve assembly 3, the float 31 rises and lifts the float valve 32 to close the pressure relief channel 7, the plunger chamber builds pressure, and the control chamber 54 builds pressure to form a dead chamber. At this time, the main valve 52 closes the valve chamber 53 under the action of the chamber pressure and the main valve spring 51, and the fueling stops.

[0042] During the movement of the main valve 52, the distance between the magnet 9 and the position sensor 10 changes. The position sensor 10 converts the magnetic signal emitted by the magnet 9 into a voltage signal, which is then processed and output as a detection signal.

[0043] The electromagnetic valve assembly and the float valve assembly are independent and have different failure modes, ensuring reliability.

[0044] Examples of applying this invention:

[0045] By designing the force value F of the main valve spring 主预 The opening pressure is 8.1N, ensuring the product's opening pressure is P. 入 <0.020MPa.

[0046] This invention belongs to the field of fluid machinery and relates to a combined redundant control oil delivery valve. Functionally, it is divided into five modules: a float valve, an electromagnetic valve, a main valve, a status monitoring unit, and a controller unit. The float valve assembly, consisting of a float, float housing, float valve, and spring, senses the oil level in the tank and passively controls the pressure build-up and depressurization of the main valve's control chamber. The electromagnetic valve assembly, consisting of a coil and coil armature assembly, actively controls the pressure build-up and depressurization of the main valve's control chamber. The main valve assembly 5, consisting of the main valve 52, valve chamber 53, and main valve spring 51, controls the opening and closing of the main flow channel (oil delivery channel) through its own movement. The status monitoring unit, consisting of a position sensor and magnet, monitors the opening and closing status of the main flow channel. The controller unit, consisting of electrical components, electrical compartment, and socket, receives external commands and controls the operation of the electromagnetic valve and the status monitoring unit. These five functional modules work together to open and close the main flow channel and provide feedback on the product's operating status. It has a simple structure, is safe and reliable.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A combined redundant control oil delivery control valve, characterized in that, The system includes a housing, with the left side inside the fuel tank and the right side outside. A float valve assembly is located on the upper left side of the housing, an oil delivery channel on the lower left side, and an electromagnetic valve assembly on the upper right side. A main valve assembly for controlling the opening and closing of the oil delivery channel is located between the inlet and outlet of the oil delivery channel. The main valve assembly includes a cylindrical slide rail cavity located on the lower left side of the housing, within which a main valve is slidably connected. A valve cavity is located within the cylindrical slide rail cavity to the left of the main valve, communicating with the outlet of the oil delivery channel. The cylindrical slide rail cavity to the right of the main valve is a closed control cavity. A main valve spring is located on the side of the main valve adjacent to the control cavity. The control cavity is connected to a pressure relief channel, through which an electromagnetic valve assembly and a float valve assembly are connected in series.

2. The combined redundant control oil delivery control valve according to claim 1, characterized in that, The control chamber is connected to the oil delivery channel inlet via a pressure-inducing channel.

3. The combined redundant control oil delivery control valve according to claim 1, characterized in that, The main valve is equipped with a magnet at one end of the control cavity, and a position sensor is installed on the lower right side of the housing. The magnet and the position sensor are aligned in the horizontal direction.

4. The combined redundant control oil delivery control valve according to claim 1, characterized in that, The float valve assembly includes a float and a float valve; a threaded structure is provided on the upper left side of the housing, the threaded structure is located at the end of the pressure relief channel, and the float valve is threadedly connected to the threaded structure; the threaded structure is also provided with a fork lug, which is rotatably connected to the support arm of the float; when the float rises to the emergency closing height, the float drives the float valve to close the pressure relief channel.

5. The combined redundant control oil delivery control valve according to claim 4, characterized in that, The float valve assembly is covered by a float cover.

6. The combined redundant control oil delivery control valve according to claim 2, characterized in that, A flow-limiting plug is installed between the oil delivery channel inlet and the pressure-sensing channel.

7. The combined redundant control oil delivery control valve according to claim 3, characterized in that, The electromagnetic valve assembly includes an armature assembly for controlling the opening / closing of the pressure relief channel and a coil for driving the armature assembly.

8. The combined redundant control oil delivery control valve according to claim 7, characterized in that, The position sensor is pressed against the right side by a wave spring and an adapter; the other end of the adapter is connected to an electrical cavity located at the right end of the coil, and a socket is provided on the right side of the electrical cavity; the wires of the position sensor enter the electrical cavity through the hollow channel of the adapter and are electrically connected to the electrical components.

9. The combined redundant control oil delivery control valve according to claim 4, characterized in that, The upper side of the support arm is equipped with a spring assembly to ensure that the float always remains in its initial position when it is not subjected to the buoyancy of the fuel in the fuel tank.

10. A method for operating a combined redundant control oil delivery control valve as described in any one of claims 1-9, characterized in that, When refueling the tank through the oil supply channel inlet, the electromagnetic valve assembly opens the pressure relief channel, and the control chamber can release pressure normally. At this time, the inflow pressure at the oil supply channel inlet is greater than the design spring force of the main valve spring, and the main valve is pushed open, so that the oil supply channel inlet is connected to the oil supply channel outlet through the valve cavity for normal refueling.

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