Dual-redundancy lightweight flow regulating device

Abstract

The utility model belongs to product mechanical structure design field relates to a kind of double-redundancy lightweight flow regulating device, including shell, two parallel flange pipe joints are respectively arranged in shell one end, two flange pipe joints inside are respectively arranged spherical valve, still include electric drive device, electric drive device is connected with the spherical valve in the first flange pipe joint by transmission shaft, the spherical valve in the first flange pipe joint is connected with the spherical valve in another flange pipe joint by intermediate transmission shaft;Sealing ring is arranged in spherical valve both end surface, sealing ring is supported by disc spring, the device of the utility model can realize the function of the redundancy of flow regulating device, long life, lightweight, high concentration, high reliability.

Description

Technical Field

[0001] This utility model belongs to the field of product mechanical structure design, and relates to flow regulation in aircraft fuel, liquid cooling and hydraulic systems, specifically a dual-redundant lightweight flow regulation device. Background Technology

[0002] Flow regulating devices are widely used fluid accessories in aviation fuel, liquid cooling, and hydraulic systems. The opening of the flow regulating device is controlled by an electric drive device controlled by a host computer, thereby controlling the flow rate in the system pipeline to ensure the flow rate of the downstream system.

[0003] Flow control devices need to be repeatedly turned on and off in the system, with a high number of operations and a long lifespan. This places high demands on the reliability of the electric power unit and the actuator. However, traditional flow control devices are designed with single redundancy, which often result in failure to work, failure to provide signals, or internal leakage, leading to low reliability and seriously affecting the execution of tasks. Utility Model Content

[0004] The purpose of this utility model is to propose a dual-redundant lightweight flow regulation device, which is characterized by light weight, small size and high reliability. Furthermore, through integrated design and dual-redundant design, it solves the problem of low reliability of existing flow regulation devices.

[0005] Technical solution:

[0006] A dual-redundant lightweight flow regulating device includes a housing, with two parallel flange pipe joints respectively provided at one end of the housing. Each flange pipe joint has a ball valve inside. The device also includes an electric drive unit, which is connected to the ball valve in the first flange pipe joint via a drive shaft. The ball valve in the first flange pipe joint is connected to the ball valve in the other flange pipe joint via an intermediate drive shaft. Both ends of the ball valves are provided with sealing rings, which are supported by disc springs.

[0007] Furthermore, the drive shaft is fixed in the inner hole of the upper part of the housing by a clamping nut, and the drive shaft 2 can rotate in the clamping nut.

[0008] Furthermore, a sealing ring is installed between the outer cylindrical surface of the drive shaft and the upper inner hole of the housing, and sealing rings are also installed between the two parallel flange pipe joints and the housing.

[0009] Furthermore, a sealing ring a is provided at the end of the spherical valve near the housing, and a sealing ring b is also provided at the end of the spherical valve near the corresponding flange pipe joint. A sealing ring is provided between the sealing ring a and the housing, and a sealing ring is also provided between the sealing ring b and the corresponding flange pipe joint. The sealing ring a is supported by a disc spring a, and the sealing ring b is supported by a disc spring b.

[0010] Furthermore, several gaskets are provided between the sealing ring a and the disc spring a, and several gaskets are provided between the sealing ring b and the disc spring b.

[0011] Furthermore, a support ring is provided between disc spring a and the housing, and a support ring is provided between disc spring b and the corresponding flange pipe joint.

[0012] Furthermore, two parallel flange pipe joints are fixed to one end of the side of the housing by washers and screws; the electric drive unit is fixed to the upper end of the housing by washers and self-locking nuts.

[0013] Furthermore, the electric drive device includes two permanent magnet brushless DC motors. An external power supply is connected to an electrical connector. The input voltage is filtered by a filter connected to the electrical connector and then input to control circuit boards one and two connected to the filter. The drive circuits on the two control circuit boards drive the two permanent magnet brushless DC motors to rotate respectively. The output shafts of the two permanent magnet brushless DC motors are connected to a reducer. After being decelerated by the reducer, the output shafts rotate. The output shafts are connected to a transmission shaft, which drives two spherical valves to rotate. A potentiometer directly connected to the output shaft provides real-time feedback of the position voltage to the system. When the required position is reached, the system disconnects the power input circuit, the drive circuit of the control circuit board disconnects, the motors are de-energized, and the device stops working.

[0014] Furthermore, the two ends of the intermediate drive shaft are rectangular connection structures, which are connected to the rectangular grooves on the two spherical valves.

[0015] Technical effects of this utility model:

[0016] The device of this invention can achieve the functions of redundancy, long life, lightweight, high concentration, and high reliability of flow regulation devices, and specifically includes the following advantages:

[0017] (1) By integrating design and dual redundancy design, functional integration and physical integration are unified, reducing the number of system accessories and pipelines, reducing installation space and system weight, and ensuring long-term reliability.

[0018] (2) Design a dual-redundant electric drive device. The motor and control circuit board with a large impact are designed as two independent devices, sharing a set of reducers. The hot backup design concept is adopted, and finally highly concentrated in one set of electric drive devices. The adjustment device is integrated and designed to drive two ball valve components connected in series to rotate through the transmission shaft, thereby realizing the flow regulation of the two channels, achieving the purpose of saving space and reducing weight.

[0019] (3) It adopts a permanent magnet brushless DC motor, which is small in size, light in weight, and compact in structure. It can realize miniaturized design, has high control precision, can achieve precise control, stable drive, and high reliability.

[0020] (4) The position feedback of this utility model device adopts a new type of plastic film switch rotary potentiometer, which is installed on the output shaft of the electric power device. When the output shaft rotates, the output position feedback voltage signal is output, avoiding contact damage and false triggering under vibration conditions. It has the advantages of small size, low noise and high reliability.

[0021] (5) The ball valve sealing structure is adopted, which has low fluid resistance, simple structure and small size. The ball valve sealing structure is integrated and interchangeable. The ball valve structure is symmetrically designed. Two identical ball valves are installed symmetrically and connected by an intermediate drive shaft to ensure the consistency of the sealing inside the two channels.

[0022] (6) The spherical valve structure is designed to reduce weight. It is designed as a spherical valve structure with uniform wall thickness. At the same time, the material is designed as aluminum alloy and the sealing surface is hard anodized to ensure the product's lightweight and long-term sealing performance.

[0023] (7) The intermediate drive shaft and the housing of the device are designed with a double-seal structure, using medium-resistant O-ring rubber rings and Type I standard sealing form. The design is simple, the structure is compact, and it is easy to install and disassemble. By designing the sealing parameters, it is ensured that there is no crossflow between the two valve channels after long-term operation, thus ensuring long-term sealing performance.

[0024] (8) Improve the processing quality of the spherical valve sealing surface and the sealing ring sealing surface, strictly control the surface profile of the spherical valve sealing surface and the runout of the sealing ring sealing surface, and ensure the long-term sealing performance of the product. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of the implementation of this utility model.

[0027] Figure 2 This is a schematic diagram of the electric drive device.

[0028] Figure 3 This is a schematic diagram of a spherical valve structure;

[0029] Figure 4This is a schematic diagram of the intermediate drive shaft structure.

[0030] 1-Electric drive unit, 2-Drive shaft, 3-Pressure nut, 4, 6, 17-Sealing ring, 5-Housing, 7, 8, 9-Adjusting shims, 10-Disc spring, 11-Support ring, 12-Sealing ring, 13-Intermediate drive shaft, 14, 16-Flange pipe joint, 15-Spherical valve, 18-Washer, 19-Screw, 20-Self-locking nut, 21-Permanent magnet brushless DC motor, 22-Electrical connector, 23-Filter, 24-Control circuit board, 25-Polypotentiometer, 26-Reducer, 27-Output shaft. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.

[0033] The present invention will now be described in further detail. See below for more details. Figure 1 .

[0034] The flow regulating device provided by this utility model mainly includes an electric drive device 1, a transmission shaft 2, a clamping nut 3, sealing rings 4, 6, and 17, a housing 5, adjusting shims 7, 8, and 9, a disc spring 10, a support ring 11, a sealing ring 12, an intermediate transmission shaft 13, flange pipe joints 14 and 16, a ball valve 15, a washer 18, a screw 19, and a self-locking nut 20.

[0035] The electric drive unit 1 includes two permanent magnet brushless DC motors 21, an electrical connector 22, a filter 23, two control circuit boards 24, a potentiometer 25, a reducer 26, and an output shaft 27.

[0036] Two parallel flange pipe joints 14 and 16 are respectively provided at one end of the housing. Spherical valves 15 are respectively provided inside the two flange pipe joints 14 and 16. The housing also includes an electric drive device 1. The electric drive device 1 is connected to the spherical valve 15 in the first flange pipe joint 16 through a drive shaft 2. The spherical valve 15 in the first flange pipe joint 16 is connected to the spherical valve 15 in the other flange pipe joint 14 through an intermediate drive shaft 13. Sealing rings 12 are provided on both ends of the spherical valves 15. The sealing rings 12 are supported by disc springs 10.

[0037] The drive shaft 2 is fixed in the inner hole of the upper part of the housing 5 by the clamping nut 3, and the drive shaft 2 can rotate in the clamping nut 3.

[0038] Among them, a sealing ring 4 is provided between the outer cylindrical surface of the drive shaft 2 and the upper inner hole of the housing 5, and a sealing ring 17 is provided between the two parallel flange pipe joints 14 and 16 and the housing.

[0039] Among them, a sealing ring a is provided at the end of the ball valve 15 near the housing 6, and a sealing ring b is also provided at the end of the ball valve 15 near the corresponding flange pipe joints 14 and 16. A sealing ring 6 is provided between the sealing ring a and the housing 5, and a sealing ring 6 is also provided between the sealing ring b and the corresponding flange pipe joints 14 and 16. The sealing ring a is supported by a disc spring a, and the sealing ring b is supported by a disc spring b.

[0040] Among them, several adjusting shims 7, 8, and 9 are provided between the sealing ring a and the disc spring a, and several adjusting shims 7, 8, and 9 are provided between the sealing ring b and the disc spring b.

[0041] Among them, a support ring 11 is provided between disc spring a and housing 5, and a support ring 11 is provided between disc spring b and corresponding flange pipe joints 14 and 16.

[0042] Among them, two parallel flange pipe joints 14 and 16 are fixed to one end of the side of the housing 5 by washers 18 and screws 19; the electric drive device 1 is fixed to the upper end of the housing 5 by washers 18 and self-locking nuts 20.

[0043] The electric drive device 1 includes two permanent magnet brushless DC motors 21. An external power supply is connected to an electrical connector 22. Voltage is input through the electrical connector 22 and filtered by a filter 23 connected to the electrical connector 22. The voltage is then input to control circuit boards 1 and 2 connected to the filter 23. The drive circuits on the two control circuit boards 24 drive the two permanent magnet brushless DC motors 21 to rotate respectively. The output shafts 27 of the two permanent magnet brushless DC motors 21 are connected to a reducer 26. After being reduced in speed by the reducer 26, the output shafts 27 are rotated. The output shafts 27 are connected to a transmission shaft 2, which drives the two spherical valves 15 to rotate.

[0044] The intermediate drive shaft 13 has rectangular connection structures at both ends, which are connected to the rectangular grooves on the two spherical valves 15.

[0045] The assembly process is as follows:

[0046] Install the adjusting shims 7, 8, and 9, the disc spring 10, and the support ring 11 into the housing 5 of the lower valve passage in sequence. Then, install the sealing ring 6 into the sealing ring 12, and then install the sealing ring with the sealing ring into the housing 5 of the lower valve passage. At this time, install the ball valve 15 into the housing 5 of the lower valve passage. Then, assemble the sealing ring 4 onto the intermediate drive shaft 13, and then insert the assembled intermediate drive shaft into the housing 5. Then, install the adjusting shims 7, 8, and 9, the disc spring 10, the support ring 11, the sealing ring 6, and the sealing ring 12 into the flange pipe joint 14 in the above manner. Then, install the assembled flange pipe joint into the housing 5 of the lower valve passage. At this time, assemble the washer 18 and the screw 19 into the housing 5 of the lower valve passage. At this time, the assembly of the lower valve passage is completed.

[0047] Assemble the adjusting shims 7, 8, and 9, disc spring 10, support ring 11, sealing ring 6, and sealing ring 12 of the upper valve passage according to the above method. Install the spherical valve 15 into the housing 5 of the upper valve passage. Assemble the sealing ring 4 onto the drive shaft 2. Then insert the assembled drive shaft into the housing 5. Next, install the adjusting shims 7, 8, and 9, disc spring 10, support ring 11, sealing ring 6, and sealing ring 12 into the flange pipe joint 16 as described above. Then install the assembled flange pipe joint into the housing 5 of the lower valve passage. At this time, assemble the washer 18 and screw 19 onto the housing 5 of the upper valve passage. Assemble the clamping nut 3 onto the housing 5 of the upper valve passage. The assembly of the upper valve passage is now complete.

[0048] At this point, the electric drive unit 1 is installed onto the housing 5 of the upper valve passage. Then, the washer 18 and the self-locking nut 20 are installed onto the housing 5 of the upper valve passage to complete the assembly of the device.

[0049] The working principle of this invention: Under normal circumstances, the product is in the open state, and the sealing ring is tightly pressed against the spherical surface of the spherical valve by the disc spring to ensure a seal. When flow regulation is required, the system issues a command, and when a certain voltage is input from the electrical connector at the power input terminal, it passes through a filter and the control circuit board drive circuit to drive the permanent magnet brushless DC motor to rotate. After being decelerated by a reducer, it drives the output shaft to rotate. The potentiometer directly connected to the output shaft provides real-time feedback of the position voltage to the system. When the required position is reached, the system disconnects the power input circuit, the control circuit board drive circuit disconnects, the motor is de-energized, and the device stops working.

[0050] The electric drive unit of this device adopts a redundant design, consisting of two structurally independent motors, and either motor can complete the flow regulation function of the device.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, but the protection scope of this utility model 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 this utility model, and these modifications or substitutions should be covered within the protection scope of this utility model.

Claims

1. A dual-redundant lightweight flow regulating device, comprising a housing, with two parallel flange pipe joints respectively disposed at one end of the housing, and ball valves respectively disposed inside the two flange pipe joints, characterized in that, It also includes an electric drive unit, which is connected to the ball valve in the first flange pipe joint via a drive shaft. The ball valve in the first flange pipe joint is connected to the ball valve in the other flange pipe joint via an intermediate drive shaft. Both ends of the ball valve are provided with sealing rings, which are supported by disc springs.

2. The dual-redundant lightweight flow regulating device according to claim 1, characterized in that, The drive shaft is fixed in the inner hole at the top of the housing by a clamping nut, and the drive shaft can rotate in the clamping nut.

3. The dual-redundant lightweight flow regulating device according to claim 1, characterized in that, A sealing ring is installed between the outer cylindrical surface of the drive shaft and the inner hole at the top of the housing, and sealing rings are also installed between the two parallel flange pipe joints and the housing.

4. The dual-redundant lightweight flow regulating device according to claim 1, characterized in that, A sealing ring a is provided at one end of the spherical valve near the housing, and a sealing ring b is also provided at the other end of the spherical valve near the corresponding flange pipe joint. A sealing ring is provided between the sealing ring a and the housing, and a sealing ring is also provided between the sealing ring b and the corresponding flange pipe joint. The sealing ring a is supported by a disc spring a, and the sealing ring b is supported by a disc spring b.

5. The dual-redundant lightweight flow regulating device according to claim 4, characterized in that, Several gaskets are placed between sealing ring a and disc spring a, and several gaskets are placed between sealing ring b and disc spring b.

6. The dual-redundant lightweight flow regulating device according to claim 5, characterized in that, A support ring is provided between disc spring a and the housing, and a support ring is provided between disc spring b and the corresponding flange pipe joint.

7. The dual-redundant lightweight flow regulating device according to claim 1, characterized in that, Two parallel flange pipe fittings are fixed to one end of the housing side by washers and screws; the electric drive unit is fixed to the upper end of the housing by washers and self-locking nuts.

8. The dual-redundant lightweight flow regulating device according to claim 1, characterized in that, The electric drive device includes two permanent magnet brushless DC motors. An external power supply is connected to an electrical connector. The voltage is input through the electrical connector, filtered by a filter connected to the electrical connector, and then input to control circuit boards one and two connected to the filter. The drive circuits on the two control circuit boards drive the two permanent magnet brushless DC motors to rotate respectively. The output shafts of the two permanent magnet brushless DC motors are connected to a reducer. After being decelerated by the reducer, the output shafts are rotated. The output shafts are connected to a transmission shaft, which drives two spherical valves to rotate.

9. The dual-redundant lightweight flow regulating device according to claim 1, characterized in that, The two ends of the intermediate drive shaft are rectangular connection structures, which are connected to the rectangular grooves on the two spherical valves.

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