A measuring device and method for measuring the high-conductivity honeycomb jump of a combustion chamber

Abstract

A kind of measuring device and method of high-conductivity honeycomb of combustion chamber high-conductivity honeycomb, the device includes chassis, and rotating disc is rotatably installed on the chassis;Center of the rotating disc is provided with through-hole, the inner circle of the through-hole cooperates with the outer periphery of high-conductivity honeycomb part front installation edge reference A;Lifting structure is provided in the center of the chassis, horizontal beam is provided at the top of lifting structure;Sliding mechanism is provided on the horizontal beam, the sliding mechanism can slide along the long direction of horizontal beam, dial gauge and measuring rod are provided on the sliding mechanism, the middle part of the measuring rod is installed on the sliding mechanism by rotating shaft, and measuring rod is vertically arranged, the upper end of measuring rod is in contact with the measuring shaft of dial gauge;Spring is provided on the sliding mechanism, and the spring is in compression state and in contact with the inner side of the lower end of measuring rod;The outer side of the lower end of measuring rod is provided as measuring head.

Description

Technical Field

[0001] This invention relates to the field of aero-engine testing equipment technology, and in particular to a measuring device and method for measuring high-conductivity honeycomb agitation in a combustion chamber. Background Technology

[0002] The high-pressure turbine guide vane on an aero-engine is abbreviated as high guide vane, and the serrations on the high guide vane are commonly referred to as honeycomb. The entire component is called a high guide honeycomb component, and its structure is as follows: Figure 1 As shown. After assembling the high-conductivity honeycomb component in the aero-engine combustion chamber, it is necessary to measure the runout of each stage of the grating relative to the front mounting edge reference A and reference B of the entire component. Currently, measuring the runout of this high-conductivity honeycomb component requires a coordinate measuring machine. This method has two drawbacks: first, the measurement is not real-time; the runout value of the honeycomb on the high-conductivity honeycomb cannot be displayed during assembly, and it can only be marked and repeatedly adjusted after the measurement data is obtained; second, the measurement process is time-consuming, due to the alignment of the component and the calibration of the probe, making the measurement process inconvenient. To improve the assembly efficiency of the high-conductivity honeycomb, the measurement method must be improved. Summary of the Invention

[0003] The main objective of this invention is to provide a measuring device and method for high-conductivity honeycomb vibration in a combustion chamber, aiming to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the present invention provides a measuring device for high-conductivity honeycomb vibration in a combustion chamber, comprising a chassis and a rotating disk rotatably mounted on the chassis; a through hole is provided at the center of the rotating disk, the inner circular surface of which mates with the outer peripheral surface of the front mounting edge reference A of the high-conductivity honeycomb component; a lifting structure is provided at the center of the chassis, and a horizontal beam is provided at the top of the lifting structure; a sliding mechanism is provided on the beam, which can slide along the length of the beam; a dial indicator and a measuring rod are provided on the sliding mechanism, the middle part of which is mounted on the sliding mechanism via a rotating shaft, and the measuring rod is vertically positioned, with its upper end abutting against the measuring shaft of the dial indicator; a spring is provided on the sliding mechanism, and the spring is in a compressed state and abuts against the inner surface of the lower end of the measuring rod; the outer surface of the lower end of the measuring rod is configured as a probe.

[0005] Preferably, with the rotation center line of the rotating disk as the reference D, the runout of the top surface of the rotating disk relative to the reference D is no greater than 0.02 mm; the runout of the inner circular surface of the through hole relative to the reference point is no greater than 0.02 mm.

[0006] Preferably, a slot is provided on the crossbeam; the measuring rod extends downward through the slot.

[0007] Preferably, the lifting structure is a vertically arranged mandrel, which comprises an outer tube, an inner tube, a locking rod, and a locking nut. The lower end of the outer tube is fixedly mounted on the chassis via a connecting plate. The inner tube is movably inserted inside the outer tube. The locking rod is inserted inside the inner tube. An external threaded section is provided at the upper end of the locking rod, extending out of the inner tube, and the locking nut is screwed onto this external threaded section. A spring flap is provided at the lower end of the inner tube. A conical block is provided at the lower end of the locking rod to expand the spring flap.

[0008] Preferably, a plurality of pins are evenly distributed in a ring on the top surface of the rotating disk, and the pins are used to be inserted into the mounting holes on the front mounting edge of the high-conductivity honeycomb component.

[0009] Preferably, the sliding mechanism includes a slider and a mounting base; the slider slides in conjunction with the crossbeam; a set screw is provided on the slider; the mounting base is fixedly mounted on the slider, and a dial indicator mounting hole is provided on the mounting base, with the dial indicator installed in the dial indicator mounting hole.

[0010] Preferably, a limit pin is provided on the upper part of the mounting base to limit the upper end of the measuring rod; a spring mounting hole is provided on the lower part of the mounting base, and a preload screw is provided on the spring mounting hole, the spring is disposed in the spring mounting hole and preloaded by the preload screw.

[0011] Preferably, two sliding mechanisms are provided on the crossbeam, located on the left and right halves of the crossbeam respectively; each sliding mechanism is provided with a dial indicator and a measuring rod, and the vertical height of the probe at the lower end of the measuring rod on the two sliding mechanisms is different, and the height difference between the two is equal to the height difference h between the centers of two adjacent grating teeth on the high-conductivity honeycomb part.

[0012] Preferably, a support seat and a rotating ring are provided between the chassis and the rotating disk; the support seat is fixed to the chassis by bolts; the rotating ring is sleeved on the upper part of the support seat, and the inner circumferential surface of the rotating ring slides in fit with the upper outer circumferential surface of the support seat; a support ring is provided on the lower outer circumferential surface of the support seat, and a ball is provided between the top surface of the support ring and the bottom surface of the rotating ring.

[0013] On the other hand, the present invention also proposes a method for measuring high-conductivity honeycomb vibration in a combustion chamber, employing the aforementioned measuring device, and comprising the following steps:

[0014] Step S1: Install the high-conductivity honeycomb component on the measuring device, such that the outer peripheral surface of the front mounting edge reference A of the high-conductivity honeycomb component matches the through hole of the rotating disk, and the front mounting edge reference B of the high-conductivity honeycomb component abuts against the rotating disk.

[0015] Step S2: Adjust the lifting structure and sliding mechanism so that the probe at the lower end of the measuring rod is in close contact with the teeth on the high-conductivity honeycomb part;

[0016] Step S3: Rotate the rotary disk to drive the high-conductivity honeycomb parts to rotate, and observe the amount of swing of the dial indicator during the rotation process, which is the jump of the high-conductivity honeycomb.

[0017] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0018] (1) In the measuring device provided by the present invention, due to the setting of a lifting structure and a sliding mechanism, the position of the probe at the lower end of the measuring rod can be adjusted by adjusting the lifting structure and the sliding mechanism. At the same time, under the action of the spring, the probe of the measuring rod can be made to be tightly attached to the serrations on the high-conductivity honeycomb part. Rotating the rotating disk drives the high-conductivity honeycomb part to rotate, and the amount of swing of the dial indicator during the rotation process can be observed to measure the runout of the high-conductivity honeycomb. By using the through hole and top surface of the rotating disk to install the high-conductivity honeycomb part, it can be automatically centered without repeated alignment. The measurement process is convenient, efficient and easy to operate, and no other special equipment is required.

[0019] (2) In the measuring device provided by the present invention, two sliding mechanisms are provided on the crossbeam. The height difference of the probes at the ends of the measuring rods on the two sliding mechanisms is equal to the height difference h between the centers of the adjacent two stages of the grating teeth on the high-conductivity honeycomb part. Therefore, by using two measuring rods, the runout of the inner circumferential surface of the adjacent two stages of the grating teeth can be measured simultaneously in one measurement, which greatly speeds up the measurement efficiency.

[0020] (3) In this invention, the high-conductivity honeycomb is cylindrical, and the reference surfaces A and B are a cylindrical surface and a plane, respectively, which are used for positioning. The measurement surface is measured using a dial indicator with a rotary measurement method, which makes the measuring device simple in structure, convenient in measurement, and the measurement structure intuitively visible. It effectively overcomes the problems of the traditional three-coordinate measuring machine in measuring this high-conductivity honeycomb part, such as the lack of real-time measurement structure and the long measurement cycle. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a high-conductivity honeycomb component on an aero-engine;

[0023] Figure 2 This is a schematic diagram of a measuring device for high-conductivity honeycomb vibration in a combustion chamber provided by the present invention;

[0024] Figure 3 This is a cross-sectional view of a measuring device for high-conductivity honeycomb vibration in a combustion chamber provided by the present invention.

[0025] Explanation of reference numerals in the attached diagram: 1. Chassis; 2. Rotary disk; 201. Through hole; 202. Pin; 3. Lifting structure; 301. Outer tube; 302. Inner tube; 303. Locking rod; 304. Locking nut; 4. Crossbeam; 401. Open slot; 5. Dial indicator; 6. Sliding mechanism; 601. Slider; 602. Mounting base; 603. Set screw; 604. Dial indicator mounting hole; 605. Spring; 606. Preload screw; 607. Limit pin; 7. Measuring rod; 701. Probe; 8. Support base; 9. Rotating ring; 10. Ball. Detailed Implementation

[0026] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Combination Figure 1 The diagram shows a high-conductivity honeycomb component on an aero-engine. This component features a multi-stage grating mechanism. The front mounting edge of the component has reference points A and B, and mounting holes C are also provided on the front mounting edge. The runout of the high-conductivity honeycomb relative to reference points A and B on the front mounting edge of the entire component needs to be measured. Specifically, the runout of each stage of the grating relative to reference points A and B on the front mounting edge of the entire component needs to be measured.

[0029] On the one hand, this embodiment provides a measuring device for high-conductivity honeycomb vibration in a combustion chamber, combined with Figure 2 , Figure 3As shown, the measuring device includes a chassis 1 and a rotating disk 2 rotatably mounted on the chassis 1. A through hole 201 is provided at the center of the rotating disk 2, and the inner circular surface of the through hole 201 mates with the outer peripheral surface of the front mounting edge reference A of the high-conductivity honeycomb part. A lifting structure 3 is provided at the center of the chassis 1, and a horizontal beam 4 is provided at the top of the lifting structure 3. A sliding mechanism 6 is provided on the beam 4, which can slide along the length of the beam 4. A dial indicator 5 and a measuring rod 7 are provided on the sliding mechanism 6. The middle part of the measuring rod 7 is mounted on the sliding mechanism 6 through a rotating shaft, and the measuring rod 7 is vertically arranged. The upper end of the measuring rod 7 abuts against the measuring shaft of the dial indicator 5. A spring 605 is provided on the sliding mechanism 6, and the spring 605 is in a compressed state and abuts against the inner surface of the lower end of the measuring rod 7. The outer surface of the lower end of the measuring rod 7 is provided as a probe 701.

[0030] Since the through hole 201 and top surface of the rotating disk 2 are mainly used for mounting high-conductivity honeycomb components, in order to ensure the mounting accuracy of the high-conductivity honeycomb components by the rotating disk 2, the rotation center line of the rotating disk 2 is used as the reference D. The runout of the top surface of the rotating disk 2 relative to the reference D is no greater than 0.02mm; the runout of the inner circular surface of the through hole 201 relative to the reference point is no greater than 0.02mm. By controlling the runout of the top surface of the rotating disk 2 and the inner circular surface of the through hole 201, the mounting accuracy of the high-conductivity honeycomb components can be guaranteed.

[0031] Combination Figure 2 As shown, since the measuring rod 7 moves along the sliding mechanism 6 on the crossbeam 4, in order to avoid the crossbeam 4 interfering with the measuring rod 7, a slot 401 is provided on the crossbeam 4, through which the measuring rod 7 extends downward.

[0032] Combination Figure 3 As shown, the lifting structure 3 is a vertically arranged mandrel, which consists of an outer tube 301, an inner tube 302, a locking rod 303, and a locking nut 304. The lower end of the outer tube 301 is fixedly mounted on the chassis 1 via a connecting plate. The inner tube 302 is movably inserted inside the outer tube 301. The locking rod 303 is inserted inside the inner tube 302. An external thread section is provided at the upper end of the locking rod 303, which extends out of the inner tube 302, and the locking nut 304 is screwed onto the external thread section. A spring flap is provided at the lower end of the inner tube 302. A conical block is provided at the lower end of the locking rod 303 to expand the spring flap.

[0033] The adjustment principle of the lifting structure 3 is as follows: When the vertical height of the probe 701 needs to be adjusted, the locking nut 304 is loosened, and the locking rod 303 is pushed downwards. This causes the conical block at the lower end of the locking rod 303 to disengage from the spring flap of the inner tube 302. The spring flap rebounds and retracts, allowing the inner tube 302 to slide up and down inside the outer tube 301 under manual force. When the inner tube 302 needs to be locked, the locking nut 304 is tightened, causing the entire locking rod 303 to move upwards. At this time, the conical block expands, and the spring flap abuts against the inner wall of the outer tube 301, thus locking the inner tube 302 to the outer tube 301. This maintains the crossbeam 4 and the components above it at a certain height.

[0034] Combination Figure 2 As shown, a plurality of pins 202 are evenly distributed in a ring on the top surface of the rotating disk 2. The pins 202 are used to be inserted into the mounting holes on the front mounting edge of the high-conductivity honeycomb component. By using the pins 202, relative rotation between the high-conductivity honeycomb component and the rotating disk 2 can be prevented, ensuring the accuracy of the runout measurement.

[0035] Combination Figure 2 , Figure 3 As shown, the sliding mechanism 6 includes a slider 601 and a mounting base 602; the slider 601 is slidably engaged with the crossbeam 4; a set screw 603 is provided on the slider 601, and when the slider 601 slides to an appropriate position, the set screw 603 is used to lock the slider 601 to limit its position on the crossbeam 4; the mounting base 602 is fixedly mounted on the slider 601, and a dial indicator mounting hole 604 is provided on the mounting base 602, the dial indicator 5 is installed in the dial indicator mounting hole 604 and locked by a screw at the top. Further, a limit pin 607 is provided on the upper part of the mounting base 602 to limit the upper end of the measuring rod 7; a spring mounting hole is provided on the lower part of the mounting base 602, and a preload screw 606 is provided on the spring mounting hole, the spring 605 is disposed in the spring mounting hole and preloaded by the preload screw 606. By using the warning screw 606, the compression of the spring 605 can be adjusted, ensuring that the probe 701 remains firmly against the serrations of the high-conductivity honeycomb component. Additionally, by setting the limit pin 607, excessive compression of the probe axis of the dial indicator 5 can be prevented, thus avoiding damage to the dial indicator 5.

[0036] Combination Figures 1 to 3As shown, two sliding mechanisms 6 are installed on the crossbeam 4, located on the left and right halves of the crossbeam 4 respectively. Each sliding mechanism 6 is equipped with a dial indicator 5 and a measuring rod 7. The vertical heights of the probes 701 at the lower ends of the measuring rods 7 on the two sliding mechanisms 6 are different, and the height difference between the two is equal to the height difference h between the centers of two adjacent grating teeth on the high-conductivity honeycomb component. Therefore, by using two measuring rods 7, the runout of the inner circumferential surfaces of two adjacent grating teeth can be measured simultaneously in one measurement, greatly accelerating the measurement efficiency.

[0037] Combination Figure 3 As shown, a support seat 8 and a rotating ring 9 are provided between the chassis 1 and the rotating disk 2; the support seat 8 is fixed to the chassis 1 by bolts; the rotating ring 9 is sleeved on the upper part of the support seat 8, and the inner circumferential surface of the rotating ring 9 is in sliding fit with the upper outer circumferential surface of the support seat 8; a support ring is provided on the lower outer circumferential surface of the support seat 8, and a ball bearing 10 is provided between the top surface of the support ring and the bottom surface of the rotating ring 9. The sliding fit between the inner circumferential surface of the rotating ring 9 and the upper outer circumferential surface of the support seat 8 requires that the runout of the top surface of the rotating disk 2 relative to the reference point is not greater than 0.02 mm; the runout of the inner circular surface of the through hole 201 relative to the reference point is not greater than 0.02 mm.

[0038] On the other hand, this embodiment also proposes a method for measuring high-conductivity honeycomb vibration in the combustion chamber, which employs a measuring device and includes the following steps:

[0039] Step S1: Install the high-conductivity honeycomb component on the measuring device, such that the outer peripheral surface of the front mounting edge reference A of the high-conductivity honeycomb component matches the through hole 201 of the rotating disk 2, and the front mounting edge reference B of the high-conductivity honeycomb component abuts against the rotating disk 2.

[0040] Step S2: Adjust the lifting structure 3 and the sliding mechanism 6 so that the probe 701 at the lower end of the measuring rod 7 is in close contact with the teeth on the high-conductivity honeycomb part;

[0041] Step S3: Rotate the rotating disk 2 to drive the high-conductivity honeycomb parts to rotate, and observe the amount of swing of the dial indicator 5 during the rotation process, which is the jump of the high-conductivity honeycomb.

[0042] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A measuring device for high-conductivity honeycomb vibration in a combustion chamber, characterized in that: Includes a chassis (1) and a rotating disk (2) rotatably mounted on the chassis (1); a through hole (201) is provided at the center of the rotating disk (2), and the inner circular surface of the through hole (201) mates with the outer peripheral surface of the front mounting edge reference A of the high-conductivity honeycomb component; a lifting structure (3) is provided at the center of the chassis (1), and a horizontal crossbeam (4) is provided at the top of the lifting structure (3); a sliding mechanism (6) is provided on the crossbeam (4), and the sliding mechanism (6) can slide along the length of the crossbeam (4). The sliding mechanism (6) is equipped with a dial indicator (5) and a measuring rod (7). The middle part of the measuring rod (7) is mounted on the sliding mechanism (6) via a rotating shaft, and the measuring rod (7) is vertically arranged. The upper end of the measuring rod (7) abuts against the measuring shaft of the dial indicator (5). A spring (605) is provided on the sliding mechanism (6), and the spring (605) is in a compressed state and abuts against the inner side of the lower end of the measuring rod (7). The outer side of the lower end of the measuring rod (7) is configured as a probe (701). With the rotation center line of the rotating disk (2) as the reference D, the runout of the top surface of the rotating disk (2) relative to the reference D is no greater than 0.02 mm; the runout of the inner circular surface of the through hole (201) relative to the reference point is no greater than 0.02 mm. The lifting structure (3) is a vertically arranged mandrel, which consists of an outer tube (301), an inner tube (302), a locking rod (303), and a locking nut (304). The lower end of the outer tube (301) is fixedly mounted on the chassis (1) via a connecting plate. The inner tube (302) is movably inserted inside the outer tube (301). The locking rod (303) is inserted inside the inner tube (302). An external thread section is provided at the upper end of the locking rod (303), which extends out of the inner tube (302). The locking nut (304) is screwed onto the external thread section. A spring flap is provided at the lower end of the inner tube (302). A conical block is provided at the lower end of the locking rod (303) to expand the spring flap. Multiple pins (202) are evenly distributed in a ring on the top surface of the rotating disk (2). The pins (202) are used to be inserted into the mounting holes of the front mounting edge of the high-conductivity honeycomb parts. Two sliding mechanisms (6) are provided on the crossbeam (4), located on the left and right halves of the crossbeam (4) respectively; each sliding mechanism (6) is provided with a dial indicator (5) and a measuring rod (7), and the vertical height of the probe (701) at the lower end of the measuring rod (7) on the two sliding mechanisms (6) is different, and the height difference between the two is equal to the height difference h between the centers of the adjacent two stages of the grating teeth on the high-conductivity honeycomb part.

2. The measuring device for high-conductivity honeycomb vibration in a combustion chamber as described in claim 1, characterized in that: A slot (401) is provided on the crossbeam (4); the measuring rod (7) extends downward through the slot (401).

3. The measuring device for high-conductivity honeycomb vibration in a combustion chamber as described in claim 1, characterized in that: The sliding mechanism (6) includes a slider (601) and a mounting base (602); the slider (601) is slidably engaged with the crossbeam (4); a set screw (603) is provided on the slider (601); the mounting base (602) is fixedly mounted on the slider (601), and a dial indicator mounting hole (604) is provided on the mounting base (602), and the dial indicator (5) is installed in the dial indicator mounting hole (604).

4. The measuring device for high-conductivity honeycomb vibration in a combustion chamber as described in claim 3, characterized in that: A limiting pin (607) is provided on the upper part of the mounting base (602) to limit the upper end of the measuring rod (7); a spring mounting hole is provided on the lower part of the mounting base (602), and a pre-tightening screw (606) is provided on the spring mounting hole. The spring (605) is set in the spring mounting hole and pre-tightened by the pre-tightening screw (606).

5. The measuring device for high-conductivity honeycomb vibration in a combustion chamber as described in claim 1, characterized in that: A support seat (8) and a rotating ring (9) are provided between the chassis (1) and the rotating disk (2); the support seat (8) is fixed to the chassis (1) by bolts; the rotating ring (9) is sleeved on the upper part of the support seat (8), and the inner circumferential surface of the rotating ring (9) slides with the upper outer circumferential surface of the support seat (8); a support ring is provided on the lower outer circumferential surface of the support seat (8), and a ball (10) is provided between the top surface of the support ring and the bottom surface of the rotating ring (9).

6. A method for measuring high-conductivity honeycomb vibration in a combustion chamber, characterized in that: The measuring device according to any one of claims 1 to 5 includes the following steps: Step S1: Install the high-conductivity honeycomb component on the measuring device, so that the outer peripheral surface of the front mounting edge reference A of the high-conductivity honeycomb component matches the through hole (201) of the rotating disk (2), and the front mounting edge reference B of the high-conductivity honeycomb component abuts against the rotating disk (2); Step S2: Adjust the lifting structure (3) and sliding mechanism (6) so that the probe (701) at the lower end of the measuring rod (7) is in close contact with the teeth on the high-conductivity honeycomb part; Step S3: Rotate the rotating disk (2) to drive the high-conductivity honeycomb parts to rotate, and observe the amount of swing of the dial indicator (5) during the rotation process, which is the jump of the high-conductivity honeycomb.

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