CN109540528B

CN109540528B - Be used for online capability test device of engine nozzle

Info

Publication number: CN109540528B
Application number: CN201811306173.0A
Authority: CN
Inventors: 刘勇; 王磊; 马璧; 池宪; 鲍晨兴; 侯晓彤
Original assignee: AVIC Beijing Precision Engineering Institute for Aircraft Industry
Current assignee: AVIC Beijing Precision Engineering Institute for Aircraft Industry
Priority date: 2018-11-02
Filing date: 2018-11-02
Publication date: 2021-04-20
Anticipated expiration: 2038-11-02
Also published as: CN109540528A

Abstract

The invention relates to an on-line performance testing device for an engine nozzle, in the technical scheme of the invention, a chuck 16 and an engine nozzle 13 form an integrated processing and testing whole body, the chuck is taken down from a testing device and installed on a processing device for processing when processing is needed, and the chuck is taken down from the processing device and installed on a chuck 15 to complete testing when testing is needed. Compared with the prior art, the method can effectively link the processing and testing links of the nozzle, shorten the debugging and circulation time of the workpiece and improve the manufacturing consistency.

Description

Be used for online capability test device of engine nozzle

Technical Field

The invention relates to an on-line performance testing device for an engine nozzle, belonging to the technical field of product structures.

Background

The size of the orifice in the engine combustion nozzle has a significant impact on its performance, particularly in actual operation. In the actual machining process, the nozzle needs to be taken down from the machining tool in the traditional method, then a performance experiment is carried out, after the experiment is finished, if the flow performance of the nozzle cannot meet the design requirement, the nozzle is assembled on the machining tool to finish the repair, however, the machining standard changes, extra installation errors are introduced, and the part may be finally scrapped.

Disclosure of Invention

The invention provides an on-line performance testing device for an engine nozzle, which is designed and provided aiming at solving the problems in the prior art, and aims to realize the rapid clamping of the whole formed by the engine nozzle and a chuck to reach a performance testing state, so that the performance testing and the processing and the repairing of a microporous structure can be completed under the same clamping technical condition, and the existing structure can meet the requirement of rapid detection and testing performance.

The purpose of the invention is realized by the following technical scheme:

the on-line performance testing device for the engine nozzle is characterized in that: the device is provided with a rapid precision positioning clamp, the clamp comprises two chucks 15 and a chuck 16, the two chucks are respectively arranged on a processing device and the testing device, the chuck 16 is used for installing an engine nozzle 13, high-precision clamping can be realized between the chucks 15 and the chuck 16 so as to meet the precision requirement of the chuck 16 when the two chucks 15 are used for exchanging clamping, and the clamping precision between the chucks 15 and the chuck 16 is 0.002 mm;

the device comprises a mounting disc 1 for mounting a chuck 15, wherein the chuck 15 is mounted at the center of the mounting disc 1, a main frame 2 is fixed on the mounting disc 1 through a mounting screw 14, a handle 11 is arranged on the main frame 2 and rotates around a rotating pin 10, the rotating pin 10 is mounted on the main frame 2, a sliding pin 17 passes through a sliding groove 18 in the middle of the handle 11, two ends of the sliding pin 17 are fixedly connected with two sides of a force application frame 9, and the force application frame 9 can be driven to move downwards when the handle 11 rotates and presses downwards;

the device comprises a mandrel 3 with a central through hole, a reset spring 6 is sleeved in the middle of the mandrel 3, the lower end of the reset spring 6 is in contact with the upper end face of a linear bearing 4 in the through hole in the upper part of a main frame 2, the upper end of the reset spring 6 is in contact with the lower end face of a fixed block 7 fixed on the mandrel 3, a square force application plate 8 is arranged above the fixed block 7, compression screws 12 are fixedly arranged below the four corners of the force application plate 8, the force application plate 8 can be pressed by a force application frame 9 to drive the fixed block 7 downwards when a handle 11 rotates and presses downwards, the fixed block 7 drives the mandrel 3 to move downwards to penetrate through the through hole in the upper part of the main frame 2, the linear bearing 4 is arranged in the through hole, and meanwhile, the compression screws 12 on the force application plate 8 can penetrate through positioning holes in;

during testing, the front end of the mandrel 3 is pressed on a sealing surface at the rear end of the engine nozzle 13, the return spring 6 is compressed, and the compression screw 12 penetrates through the positioning hole and then is locked.

In the technical scheme of the invention, the chuck 16 and the engine nozzle 13 form an integrated processing and testing whole, and when the processing is needed, the chuck is taken down from the testing equipment and installed on the processing equipment for processing, and when the testing is needed, the chuck is taken down from the processing equipment and installed on the chuck 15 to complete the testing.

In the technical scheme of the invention, the original nozzle structural design is improved, the sealing surface is added at the rear end of the structure, the sealing is realized without adopting the traditional clamp or thread sealing mode, the external lateral force on the part on the spring clamping sleeve is reduced to the maximum extent, the axial deflection of the engine nozzle to be processed on the spring clamping sleeve is avoided, the coaxial of the engine nozzle and the spring clamping sleeve is ensured, therefore, the axial line precision of the engine nozzle on the space can be ensured, the integral module formed by the engine nozzle and the spring clamp sleeve can be freely switched between processing equipment and testing equipment, thereby make it can accomplish capability test and microporous structure's processing and repair on processing frock for current structure can satisfy the requirement of short-term test performance, guarantees the high uniformity of final processing piece performance, and condemned part reduces in a large number.

During testing, the oil inlet pipe is connected with the thread at the rear end of the mandrel 3, fuel oil flows into the engine nozzle 13 from the central hole of the mandrel 3, the small-hole flow capacity of the engine nozzle 13 under set pressure is measured, and the online performance test of the nozzle is completed; after the measurement is finished, the compression screw 12 is loosened, the handle 11 is released, the handle 11 is driven to reset by the reset spring 6, and the chuck 16 is removed.

Drawings

FIG. 1 is a structural cross-sectional view of the apparatus of the present invention;

FIG. 2 is a side view of the apparatus of the present invention

FIG. 3 is an isometric view of the apparatus of the present invention;

FIG. 4 is a schematic view of the device of the present invention in its configuration and state when the handle is depressed;

FIG. 5 is a schematic view of the device of the present invention in its configuration and state when the handle is in a reset position;

Detailed Description

The invention is described in more detail below with reference to the following figures and examples:

referring to fig. 1, an engine nozzle 13 is fixed on a chuck 16 to form a machining test whole and is precisely fixed on a chuck 15 at the center of a mounting plate 1, a main frame 2 is fixed on the mounting plate 1 by a mounting screw 14, and a handle 11 can rotate on the main frame 2 by a rotating pin 10; the handle 11 is pressed downwards, pressure is transmitted through the sliding pin 15 and the force application frame 9, the force application frame 9 pushes the force application plate 8 and the fixing block 7 to move downwards and pushes the mandrel 3 to penetrate through the linear bearing 4, the front end of the mandrel 3 presses the upper sealing surface of the engine nozzle 13, the return spring 6 is compressed, and the compression screw 12 penetrating through the fixing plate 5 is locked manually. During testing, the oil inlet pipe is connected with the threads at the rear end of the mandrel 3, fuel oil flows into the engine nozzle 13 from the rear end of the mandrel 3, the through-flow capacity of the small hole of the engine nozzle 13 can be tested at the moment, and the online performance test of the nozzle is completed; after the test is finished, the compression screw 12 is loosened, the handle 11 is released, the handle 11 is driven by the return spring 6 to return, and the test of the next nozzle can be carried out after the chuck 16 is removed. The matching of the linear bearing 4 and the mandrel 3 can ensure that the position of the mandrel in the space is always coaxial with the axis position of the engine nozzle 13, avoid fuel leakage caused by untight fit of the sealing surfaces of the mandrel 3 and the engine nozzle 13 due to deflection of the mandrel 3, and ensure normal operation of online test.

Referring to fig. 2, the rotating pin 10 and the sliding pin 17 are held by a cotter, the rotating pin 10 connects the main frame 2 and the handle 11 to realize the rotation of the handle, the sliding pins 17 are distributed symmetrically left and right, and connect the handle 11 and the force application frame 9 to realize the relative sliding between the force application frame and the handle. Through two articulated links, realized just can drive application of force frame 9 gliding when pushing down handle 11, and can guarantee to apply and carry out the required pressure of end face seal to dabber 3 and engine nozzle 13.

Referring now to FIG. 3, there is shown an isometric view of an in-line engine nozzle performance testing apparatus, the various features of which may be more clearly seen.

Referring to fig. 4, which is a schematic view of the structure and state of the device of the present invention when the handle is pressed down, when the on-line performance test of the engine nozzle is performed, the whole body formed by the engine nozzle 13 and the chuck 16 is taken off from the processing machine, and then is directly placed on the base formed by the

mounting plates

1 and 15, and the handle 11, the lower end face of the mandrel 3 and the sealing surface of the engine nozzle 13 are pressed down to realize end face sealing.

Referring to fig. 5, which is a schematic view of the structure and state of the device of the present invention when the handle is reset, after the online performance test of the engine nozzle is completed, the compression screw 12 is loosened, the core shaft 3 is jacked up by the reset spring 6, and at this time, the whole formed by the engine nozzle 13 and the chuck 16 can be removed, and the whole can be taken out to a processing machine tool for further repair processing.

Compared with the prior art, the device can complete the online performance test of the engine nozzle on the premise of not changing the precision of the original processing equipment, realize the consistency of the coordinate systems of the processing equipment and the performance test system, and realize the urgent requirement of the integration of the manufacturing and the performance test of the characteristic of the micro-hole of the engine nozzle. The device can effectively link the processing and testing links of the engine nozzle, shorten the time for debugging and circulating the workpiece, and improve the manufacturing consistency.

Claims

1. The utility model provides a be used for online capability test device of engine nozzle which characterized in that: the device is provided with a rapid precision positioning clamp, the clamp comprises two chucks (15) and a chuck (16), the two chucks are respectively arranged on a processing device and the testing device, the chuck (16) is used for installing an engine nozzle (13), high-precision clamping can be realized between the chucks (15) and the chuck (16) so as to meet the precision requirement of the chuck (16) when the two chucks (15) are used for exchanging clamping, and the clamping precision between the chucks (15) and the chuck (16) is 0.002 mm;

the device comprises a mounting disc (1) for mounting a chuck (15), wherein the chuck (15) is mounted at the center of the mounting disc (1), a main frame (2) is fixed on the mounting disc (1) through a mounting screw (14), a handle (11) is arranged on the main frame (2) and rotates around a rotating pin (10), the rotating pin (10) is mounted on the main frame (2), a sliding pin (17) penetrates through a sliding groove (18) in the middle of the handle (11), two ends of the sliding pin (17) are fixedly connected with two sides of a force application frame (9), and the handle (11) can drive the force application frame (9) to move downwards when rotating and pressing down;

the device includes dabber (3) of a band of central through-hole, the middle part cover of dabber (3) is equipped with reset spring (6), the lower extreme of reset spring (6) and the up end contact of linear bearing (4) in main frame (2) upper portion through-hole, the upper end of reset spring (6) and the lower end contact of fixing fixed block (7) on dabber (3), set up a square application of force board (8) in fixed block (7) top, the below fixed mounting of four angular position departments of application of force board (8) has housing screw (12), handle (11) can press power board (8) and drive fixed block (7) downwards through application of force frame (9) when rotating and pushing down, fixed block (7) drive dabber (3) downstream and pass the through-hole on main frame (2) upper portion, install linear bearing (4) in the through-hole, and simultaneously, housing screw (12) on application of force board (8) can pass the fixed plate (5) with linear bearing (4) fixed connection Positioning holes;

during testing, the front end of the mandrel (3) is pressed on a sealing surface at the rear end of an engine nozzle (13), the return spring (6) is compressed, and the compression screw (12) penetrates through the positioning hole and then is locked.