A radial vortex finder clamping device and flow test equipment

Abstract

The present invention relates to the technical field of air flow testing of radial vortex finders of aircraft engine parts, specifically a radial vortex finder clamping device and flow test equipment. It comprises an assembly mechanism and an assembly component used in conjunction therewith. Through the coordinated arrangement of the cylinder, positioning ring and electromagnet in the assembly mechanism and the pressure block and suction rod in the assembly component, one end of the radial vortex finder to be tested can be sealed and assembled by the suction force of the electromagnet on the suction rod, and then the other end of the radial vortex finder to be tested can be sealed and assembled by the downward pressure of the cylinder. During this process, the suction force of the electromagnet is constant, and the change in force will not cause the sealing gasket and the radial vortex finder to be tested to rotate and shift, resulting in gas leakage. The entire assembly time is shortened to less than 0.5 minutes, which greatly reduces the labor intensity of assembly and improves assembly efficiency. The invention solves the problems of manual assembly of radial vortex finders, multiple clamping processes, long clamping time, low efficiency and low clamping accuracy in the prior art, which lead to gas leakage of the test piece.

Description

Technical Field

[0001] The invention relates to the technical field of air flow testing of radial vortex finders of aviation engine parts, in particular to a radial vortex finder clamping device and flow testing equipment. Background Art

[0002] The radial vortex finder air flow test is one of the important processes required for engine flame tube components. Its test data is an important basis for engine installation. With the increase in engine production, the annual test volume is nearly 10,000 times.

[0003] See also Figure 1 Currently, the fixtures used for air flow tests on radial vortex finders (AVFs) for aircraft engine parts utilize a two-step thread spinning method to assemble the test piece. To load and unload the test piece, the part must first be assembled with one section of the fixture, the bottom seal completed, and then placed in another section of the fixture for a second spin. Each tightening requires 10 to 15 manual rotations. Clamping the radial vortex finder test piece requires multiple steps, and loading and unloading the test piece takes 2 to 3 minutes. Each clamping step involves two threads of tightening, resulting in low efficiency. Furthermore, the tightening force varies depending on the individual, which can easily cause the gasket and test piece to rotate and shift, leading to gas leakage and distorting test data. Summary of the Invention

[0004] Aiming at the problems in the prior art of manual assembly of radial vortex finders, multiple clamping steps, long clamping time, low efficiency and low clamping precision leading to gas leakage of the test piece, the present invention provides a radial vortex finder clamping device and flow test equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a radial vortex finder clamping device, comprising a control circuit, an assembly mechanism and an assembly component used in conjunction therewith, wherein the assembly mechanism is connected to the control circuit;

[0007] The assembly mechanism includes a base, a mounting bracket, a cylinder, a positioning ring, an upper cover, and an electromagnet; the base is provided with an assembly hole; the position of the assembly hole is arranged corresponding to the inner cavity of the positioning ring; the mounting bracket is arranged on the base; the cylinder is arranged on the mounting bracket; the upper cover is fixedly connected to the positioning ring; the cylinder piston of the cylinder passes through the mounting bracket and the upper cover, extends into the inner cavity of the positioning ring, and is connected to the electromagnet; the electromagnet and the cylinder are both connected to a control circuit;

[0008] The assembly component passes through the assembly hole to reach the inner cavity of the positioning ring and is magnetically connected to the electromagnet. The assembly component includes a pressure block and a suction rod. The suction rod is screwed to the pressure block through a first nut, and the suction rod is magnetically connected to the electromagnet.

[0009] Preferably, the cylinder piston of the cylinder is connected to the electromagnet through an adapter sleeve.

[0010] Preferably, the cylinder piston of the cylinder and the upper cover are connected in a limiting manner via a second nut.

[0011] Preferably, the pressing block is made of polytetrafluoroethylene.

[0012] Preferably, the air inlet holes of the cylinders are respectively provided with cylinder restrictors.

[0013] Preferably, an O-ring is provided on the base outside the assembly hole.

[0014] Preferably, a sealing gasket is provided on the end surface of the positioning ring that contacts and positions the vortex finder to be assembled.

[0015] Preferably, the upper cover is provided with a plurality of through holes.

[0016] Preferably, the suction force of the electromagnet is 25 kg.

[0017] The present invention provides a radial vortex finder air flow test device, comprising the radial vortex finder clamping device.

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

[0019] The present invention provides a radial vortex finder clamping device, which includes an assembly mechanism and an assembly component used in conjunction therewith. Through the coordination of the cylinder, positioning ring and electromagnet in the assembly mechanism with the pressure block and suction rod in the assembly component, one end of the radial vortex finder to be tested can be sealed and assembled by the suction force of the electromagnet on the suction rod, and then the other end of the radial vortex finder to be tested can be sealed and assembled by the downward pressure of the cylinder; during this process, the suction force of the electromagnet is constant, and the change in force will not cause the sealing gasket and the radial vortex finder to be tested to rotate and shift, resulting in gas leakage. Secondly, the device only requires manual placement of the radial vortex finder to be tested on the assembly component, without the need for manual spinning twice, and no manual disassembly is required after the assembly is completed. It can be completed by simply turning off the power to the electromagnet. The entire assembly time is shortened to less than 0.5 minutes, which greatly reduces the labor intensity of assembly, greatly shortens the assembly time, and improves assembly efficiency.

[0020] Furthermore, the material of the pressing block is polytetrafluoroethylene, which not only reduces its own weight but also seals the radial vortex finder to be measured and prevents the radial vortex finder to be measured from being damaged.

[0021] Furthermore, the setting of the cylinder flow limiter can adjust the downward pressure speed of the cylinder, thereby avoiding impact when the cylinder is pressed down, which may cause damage to the radial vortex finder to be tested.

[0022] Furthermore, the provision of the O-ring can provide a buffer for the positioning ring as it is pressed downward by the cylinder, thereby preventing the positioning ring from hitting the base and causing damage to the device.

[0023] Furthermore, the provision of the sealing gasket can prevent the positioning ring from damaging the radial vortex finder to be measured due to the downward pressure of the cylinder, while ensuring the sealing performance of the radial vortex finder to be measured.

[0024] Furthermore, the provision of the through holes can not only ensure the ventilation requirements of the device, but also reduce the weight of the device itself.

[0025] Furthermore, the suction force of the electromagnet is selected to be 25 kg, which can not only meet the assembly requirements of the radial vortex finder to be tested, but also ensure the sealing of the assembled radial vortex finder.

[0026] The present invention also provides a radial vortex finder air flow test device, including the radial vortex finder clamping device described above. The device can conveniently clamp the test piece, with high clamping efficiency, reliable clamping sealing effect, accurate test results, and a high success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of a radial vortex finder clamping device of the present invention.

[0028] Figure 2 This is a top view of the base structure of a radial vortex finder clamping device of the present invention.

[0029] Figure 3 This is a cross-sectional structural diagram of the base of a radial vortex finder clamping device of the present invention.

[0030] Figure 4 This is a top view of the structure of a positioning ring of a radial vortex finder clamping device of the present invention.

[0031] Figure 5 This is a cross-sectional structural diagram of a positioning ring of a radial vortex finder clamping device of the present invention.

[0032] Figure 6 This is a cross-sectional view of a pressing block of a radial vortex finder clamping device of the present invention.

[0033] Figure 7 This is a partial cross-sectional view of a suction rod of a radial vortex finder clamping device of the present invention.

[0034] Figure 8 This is a partial cross-sectional view of an adapter sleeve of a radial vortex finder clamping device of the present invention.

[0035] Figure 9 This is a top view of an adapter sleeve of a radial vortex finder clamping device of the present invention.

[0036] Figure 10 This is a circuit control structure diagram of a radial vortex finder clamping device of the present invention.

[0037] Among them, 1-base, 2-mounting frame, 3-cylinder, 4-positioning ring, 5-upper cover, 6-electromagnet, 7-assembly hole, 8-pressure block, 9-suction rod, 10-first nut, 11-adapter sleeve, 12-second nut, 13-O-ring, 14-vortex finder to be assembled, 15-sealing gasket, 16-pressing switch, 17-releasing switch, 18-electromagnetic switch, 19-first solenoid valve, 20-second solenoid valve, 21-safety grating. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use. These terms are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] The present invention will be further described in detail below with reference to specific embodiments, which are intended to explain the present invention rather than to limit it.

[0045] See also Figures 1 to 9 , the present invention discloses a radial vortex finder clamping device including an assembly mechanism and an assembly component used in conjunction with the assembly mechanism;

[0046] The assembly mechanism includes a base 1, on which a mounting bracket 2 is provided; a cylinder 3 is installed on the mounting bracket 2; the cylinder piston of the cylinder 3 passes through the top of the mounting bracket 2 and is connected to the upper cover 5 through a second nut 12; the upper cover 5 is connected to a positioning ring 4, and a sealing gasket 15 is provided on the end surface of the positioning ring 4 that contacts and positions the vortex finder 14 to be assembled; an assembly hole 7 is opened on the base 1; the position of the assembly hole 7 is corresponding to the inner cavity of the positioning ring 4, and an O-ring 13 is provided on the base outside the assembly hole 7; the bottom end of the cylinder piston of the cylinder 3 passes through the mounting bracket 2 and the upper cover 5 and extends into the inner cavity of the positioning ring 4 to be connected to an adapter sleeve 11, and the adapter sleeve 11 is connected to an electromagnet 6;

[0047] The assembly component passes through the assembly hole 7 to reach the inner cavity of the positioning ring 4 and is magnetically connected to the electromagnet 6. The assembly component includes a pressure block 8, which is made of polytetrafluoroethylene and is threadedly connected to a suction rod 9 through a first nut 10. The suction rod 9 cooperates with the electromagnet 6 for magnetic attraction.

[0048] Preferably, the air inlet holes of the cylinder 3 are each provided with a cylinder flow restrictor; the upper cover 5 is provided with a plurality of through-holes; and the sidewall of the positioning ring 4 is provided with a plurality of square holes, which not only ensure ventilation requirements but also reduce the weight of the positioning ring 4. The suction force of the electromagnet 6 is 25 kg. The magnetic end surface of the suction rod 9 is larger than the diameter of the suction rod 9 and is trumpet-shaped to ensure sufficient suction area.

[0049] See also Figure 10The cylinder 3 and electromagnet 6 are both connected to a control circuit, which includes a clamping switch 16, a release switch 17, an electromagnetic switch 18, a first electromagnetic valve 19, a second electromagnetic valve 20, and a safety light barrier 21. The clamping switch 16 is connected to the first electromagnetic valve 19, and the release switch 13 is connected to the second electromagnetic valve 20. A safety barrier 11 is located between the clamping switch 16 and the first electromagnetic valve 19. This barrier is a photoelectric barrier that prevents the cylinder from clamping when the tester places or removes the test piece. The barrier also prevents the test piece from being placed or removed from an unsafe position. The electromagnetic switch 18 is connected to the electromagnet 6 to control its power on and off. Two cylinder flow limiters are connected to the first electromagnetic valve 19 and the second electromagnetic valve 20, respectively, to control the air path for clamping or releasing the cylinder 3. The control circuit also includes a filter and a pressure reducing valve. The pressure reducing valve controls the clamping force of the cylinder 3, and the filter filters the air entering the cylinder 3.

[0050] When clamping the radial vortex finder 14 to be tested, first, the radial vortex finder 14 to be tested is sleeved on the suction rod 9 of the assembly component and made to fit with the pressure block 8; then the assembly component with the assembled radial vortex finder 14 to be tested is passed through the assembly hole 7 so that the end of the radial vortex finder 14 to be tested away from the pressure block 8 is assembled with the positioning ring 4, and the first nut 10 is adjusted so that the length of the suction rod 9 can be adsorbed by the electromagnet 6; the electromagnetic switch 18 is connected to make the electromagnet 6 adsorb the suction rod 9, and the suction rod 9 drives the pressure block 8 holding the radial vortex finder 14 to be tested to move upward and press the radial vortex finder 14 to be tested; then the first electromagnetic valve 19 and the pressing switch 16 are turned on, so that the cylinder piston of the cylinder 3 drives the positioning ring 4 and the assembly component with the radial vortex finder 14 to be tested to be pressed and maintained against the base 1. During the test, the airflow passes through the guide hole of the radial vortex finder 14 to be tested and is discharged to the atmosphere through the positioning ring cavity. After the experiment, the switch 17 and the second solenoid valve 20 are connected and released, so that the cylinder piston of the cylinder 3 drives the positioning ring 4 and the assembly component to rise, supporting the radial vortex finder to be tested, and the electromagnetic switch 18 is closed to cut off the power to the electromagnet 6 and lose the adsorption force, and the radial vortex finder to be tested 14 is removed, completing the clamping, sealing, testing and disassembly of the radial vortex finder to be tested 14.

[0051] The present invention also provides a radial vortex finder air flow test equipment, including the above-mentioned radial vortex finder clamping device, the base 1 of the radial vortex finder clamping device is sealed with the test equipment by eight hexagonal countersunk screws, and a sealing ring is arranged between the base 1 and the test equipment; the equipment can realize convenient clamping of the test piece, and has high clamping efficiency, reliable clamping sealing effect, accurate test results and high success rate.

[0052] The radial vortex finder air flow test equipment was tested and all indicators met the design requirements and satisfied the test requirements of the radial vortex finder flow parameters. The radial vortex finder was tested 10 times and the test results are shown in the table below:

[0053]

[0054]

[0055] In summary, the present invention provides a radial vortex finder clamping device and flow rate testing equipment, including an assembly mechanism and an assembly component used therewith. The assembly mechanism comprises a cylinder, a positioning ring, and an electromagnet, and a pressure block and a suction rod in the assembly component. The electromagnet can apply suction to the suction rod to seal and compress one end of the radial vortex finder to be tested, and then the cylinder can press downward to seal and compress the other end of the radial vortex finder to be tested. During this process, the electromagnet maintains constant suction, and changes in force will not cause the sealing gasket and the radial vortex finder to be tested to rotate and shift, resulting in gas leakage. The device also features high assembly efficiency and a short assembly time, saving significant manpower.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to impose any limitation on the technical solution of the present invention. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can also be subjected to several simple modifications and replacements, and these modifications and replacements are also within the scope of protection covered by the claims.

Claims

1. A radial vortex finder clamping device, characterized in that: It includes a control circuit, an assembly mechanism and an assembly component used in conjunction with the control circuit, wherein the assembly mechanism is connected to the control circuit; The assembly mechanism comprises a base (1), a mounting frame (2), a cylinder (3), a positioning ring (4), an upper cover (5) and an electromagnet (6); an assembly hole (7) is provided on the base (1); the position of the assembly hole (7) is arranged corresponding to the inner cavity of the positioning ring (4); the mounting frame (2) is arranged on the base (1); the cylinder (3) is arranged on the mounting frame; the upper cover (5) is fixedly connected to the positioning ring (4); the cylinder piston of the cylinder (3) passes through the mounting frame (2) and the upper cover (5) and extends into the inner cavity of the positioning ring (4) and is connected to the electromagnet (6); the electromagnet (6) and the cylinder (3) are both connected to the control circuit; The assembly component passes through the assembly hole (7) and reaches the inner cavity of the positioning ring (4) to be magnetically connected with the electromagnet (6). The assembly component includes a pressure block (8) and a suction rod (9). The suction rod (9) is spirally connected to the pressure block (8) through a first nut (10). The suction rod (9) is magnetically connected with the electromagnet (6).

2. The radial vortex finder clamping device according to claim 1, characterized in that: The cylinder piston of the cylinder (3) is connected to the electromagnet (6) via an adapter sleeve (11).

3. The radial vortex finder clamping device according to claim 1, characterized in that: The cylinder piston of the cylinder (3) and the upper cover (5) are connected in a limiting manner via a second nut (12).

4. The radial vortex finder clamping device according to claim 1, characterized in that: The material of the pressing block (8) is polytetrafluoroethylene.

5. The radial vortex finder clamping device according to claim 1, characterized in that: The air inlet holes of the cylinders (3) are respectively provided with cylinder flow restrictors.

6. The radial vortex finder clamping device according to claim 1, characterized in that: An O-ring (13) is provided on the base outside the assembly hole (7).

7. The radial vortex finder clamping device according to claim 1, characterized in that: A sealing gasket (15) is provided on the end surface of the positioning ring (4) that contacts and positions the vortex finder (14) to be assembled.

8. The radial vortex finder clamping device according to claim 1, characterized in that: The upper cover (5) is provided with a plurality of through holes.

9. The radial vortex finder clamping device according to any one of claims 1 to 8, characterized in that: The suction force of the electromagnet (6) is 25 kg.

10. A radial vortex finder air flow test equipment, characterized in that: It comprises the radial vortex finder clamping device according to any one of claims 1 to 9.

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