CN112067299B

CN112067299B - Pipe insertion amount measuring device for aircraft engine

Info

Publication number: CN112067299B
Application number: CN202010952441.7A
Authority: CN
Inventors: 刘宁; 王凯; 刘洋; 邵晓寒; 石岩
Original assignee: AECC Shenyang Liming Aero Engine Co Ltd
Current assignee: AECC Shenyang Liming Aero Engine Co Ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2022-11-15
Anticipated expiration: 2040-09-11
Also published as: CN112067299A

Abstract

The utility model provides a catheterization volume measuring device for aeroengine, including the clamp type handle, measuring probe and measurement reference plate, two measuring probe articulate perpendicularly respectively at clamp type handle support arm pointed end, the equipartition is equipped with the mark line that a plurality of linewidths are 1mm in the measurement probe scale section, it also is 1mm to mark the line interval, measuring probe wears the dress on measuring the reference plate through waist type hole, the cover is equipped with reset spring in the measurement probe scale section of measurement reference plate below, measure the reference plate upper surface as the measurement reference surface, it is equipped with supporting pedestal to measure the reference plate lower surface. The invention can accurately and quickly complete the measurement of the insertion amount and the insertion uniformity of the catheter, can visually reflect the measurement result, and is convenient for a checker to judge the assembly quality of the inserted catheter; the method is used for measuring the insertion amount of the catheter, the measurement precision is less than 1mm, only about 10 seconds are needed for completing measurement of one inserted catheter and judgment of the assembly quality, and compared with the method for measuring by using a vernier caliper, the measurement efficiency is improved by 30 times.

Description

Pipe insertion amount measuring device for aeroengine

Technical Field

The invention belongs to the technical field of aero-engines, and particularly relates to a catheter insertion amount measuring device for an aero-engine.

Background

At present, a large number of inserted guide pipes are adopted in an aircraft engine for pipeline connection, and the inserted guide pipes are usually applied to pipelines which have large medium flow and thick pipe diameters and are not easy to correct, and are matched with rubber rings for use, and the rubber rings play a role in sealing. Since the insertion amount of the insert type guide pipe is affected by factors such as a cumulative manufacturing tolerance, an assembling tolerance, and a deformation after trial run of the position of the guide pipe joint, there is a certain difference in each re-assembling. If the insertion amount of the conduit is insufficient, the rubber ring is easy to be separated, so that the sealing failure is caused, and the medium in the pipeline is leaked. If the insertion amount of the conduit is too deep or uneven, in the process of trial run of the aeroengine, fluid with higher temperature in the conduit is easy to act on the wall of the conduit, so that the conduit is heated to expand, and the expansion amount is released everywhere, so that the extrusion and the depression of the conduit wall are caused. Therefore, it is important to accurately measure the amount of catheter insertion.

However, at present, a vernier caliper is still used as a measuring tool for the insertion amount of the conduit, and specifically, the insertion amount and the insertion uniformity of the conduit are repeatedly measured at 8 circumferential points by using the vernier caliper, but the measuring tool is limited by the spatial structure of the conduit and the influence of a large number of inserted pipe joints outside the aircraft engine, and has the problems of poor measuring accuracy and low measuring efficiency, and the measuring result cannot actually reflect the assembly quality of the conduit. Through actual measurement, the single-point position error is limited by a measurement space, the error can reach 1-2 mm, the measurement time is long, the test recording of one pipe joint and the judgment of the assembly quality are completed, about 5 minutes is needed, the measurement structure is inserted into 60 positions of the whole engine for calculation, and at least 5 hours are needed for completing the measurement work of the whole engine, so that the delivery assembly period of the engine is greatly increased.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a catheter insertion amount measuring device for an aeroengine, which can accurately and quickly measure the insertion amount and the insertion uniformity of a catheter, can visually reflect the measuring result and is convenient for a checker to judge the assembly quality of an insertion type catheter; the method is adopted to measure the inserted quantity of the guide pipe, the measurement precision is less than 1mm, the measurement of one inserted guide pipe and the judgment of the assembly quality are completed, only about 10 seconds are needed, the calculation is carried out by using a 60-position inserted measurement structure of the whole engine, the consumed time is only accumulated for 10 minutes, and compared with the measurement by adopting a vernier caliper, the measurement efficiency of the method is improved by 30 times.

In order to achieve the purpose, the invention adopts the following technical scheme: a catheter insertion amount measuring device for an aircraft engine comprises a clamp-type handle, a first measuring probe, a second measuring probe, a measuring reference plate, a first probe return spring and a second probe return spring; the first measuring probe and the second measuring probe are identical in structure and are divided into a hinge section, a scale section and a lower probe section, the hinge section is located at the tops of the first measuring probe and the second measuring probe, the lower probe section is located at the bottoms of the first measuring probe and the second measuring probe, and the scale section is located between the hinge section and the lower probe section; a plurality of marking lines are distributed on the surface of the needle rod of the scale section at equal intervals, the line width of each marking line is 1mm, and the interval between every two adjacent marking lines is 1mm; the tip end of one support arm of the clamp-type handle is hinged to the hinged section of the first measuring probe, and the first measuring probe is perpendicular to the plane of the clamp-type handle; the tip end of the other support arm of the clamp-type handle is hinged to the hinging section of the second measuring probe, and the second measuring probe is vertical to the plane of the clamp-type handle; a handle return spring is connected between the two support arms of the clamp-type handle; the measuring reference plate is of an arc line flat plate structure, a first waist-shaped hole is formed in one end of the measuring reference plate, a second waist-shaped hole is formed in the other end of the measuring reference plate, and the first waist-shaped hole and the second waist-shaped hole are distributed in a central symmetry mode relative to the measuring reference plate; the scale section of the first measuring probe is positioned in the first kidney-shaped hole, the first measuring probe is in clearance fit with the first kidney-shaped hole, and the first probe return spring is sleeved on the scale section of the first measuring probe positioned below the measuring reference plate; the scale section of the second measuring probe is positioned in the second kidney-shaped hole, the second measuring probe is in clearance fit with the second kidney-shaped hole, and the second probe return spring is sleeved on the scale section of the second measuring probe positioned below the measuring reference plate; the upper surface of the measurement datum plate is used as a measurement datum plane, and a support base is arranged on the lower surface of the measurement datum plate.

The invention has the beneficial effects that:

the device for measuring the insertion quantity of the guide pipe for the aeroengine can accurately and quickly measure the insertion quantity and the insertion uniformity of the guide pipe, can visually reflect the measurement result, and is convenient for a checker to judge the assembly quality of the insertion type guide pipe; the method is used for measuring the insertion amount of the guide pipe, the measurement precision is less than 1mm, the measurement of one insertion type guide pipe and the judgment of the assembly quality are completed, only about 10 seconds are needed, the calculation is carried out by using a 60-position insertion measurement structure of the whole engine, the time consumption is only accumulated for 10 minutes, and compared with the measurement by using a vernier caliper, the measurement efficiency is improved by 30 times.

Drawings

FIG. 1 is a schematic diagram of a catheter insertion amount measuring device for an aircraft engine according to the present invention;

FIG. 2 is a view A of FIG. 1 (measurement state);

FIG. 3 is a schematic view of the first/second measurement probes;

in the figure, 1-a clamp-type handle, 2-a first measuring probe, 3-a second measuring probe, 4-a measuring reference plate, 5-a first probe return spring, 6-a second probe return spring, 7-a hinged section, 8-a scale section, 9-a downward probing section, 10-a handle return spring, 11-a first kidney-shaped hole, 12-a second kidney-shaped hole, 13-a supporting base, 14-an inner pipe joint and 15-an outer pipe joint.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1 to 3, a catheter insertion amount measuring device for an aircraft engine includes a clamp-type handle 1, a first measuring probe 2, a second measuring probe 3, a measuring reference plate 4, a first probe return spring 5, and a second probe return spring 6; the first measuring probe 2 and the second measuring probe 3 have the same structure and are equally divided into a hinge section 7, a scale section 8 and a lower probe section 9, the hinge section 7 is positioned at the tops of the first measuring probe 2 and the second measuring probe 3, the lower probe section 9 is positioned at the bottoms of the first measuring probe 2 and the second measuring probe 3, and the scale section 8 is positioned between the hinge section 7 and the lower probe section 9; a plurality of marking lines are distributed on the surface of the needle rod of the scale section 8 at equal intervals, the line width of each marking line is 1mm, and the interval between every two adjacent marking lines is 1mm; the tip end of one support arm of the clamp-type handle 1 is hinged on the hinge section 7 of the first measuring probe 2, and the first measuring probe 2 is vertical to the plane of the clamp-type handle 1; the tip end of the other support arm of the clamp-type handle 1 is hinged on a hinge section 7 of the second measuring probe 3, and the second measuring probe 3 is vertical to the plane of the clamp-type handle 1; a handle return spring 10 is connected between the two support arms of the clamp-type handle 1; the measuring reference plate 4 is of an arc line flat plate structure, one end of the measuring reference plate 4 is provided with a first waist-shaped hole 11, the other end of the measuring reference plate 4 is provided with a second waist-shaped hole 12, and the first waist-shaped hole 11 and the second waist-shaped hole 12 are distributed in a central symmetry mode relative to the measuring reference plate 4; the scale section 8 of the first measuring probe 2 is positioned in the first kidney-shaped hole 11, the first measuring probe 2 is in clearance fit with the first kidney-shaped hole 11, and the first probe return spring 5 is sleeved on the scale section 8 of the first measuring probe 2 positioned below the measuring reference plate 4; the scale section 8 of the second measuring probe 3 is positioned in the second kidney-shaped hole 12, the second measuring probe 3 is in clearance fit with the second kidney-shaped hole 12, and the second probe return spring 6 is sleeved on the scale section 8 of the second measuring probe 3 positioned below the measuring reference plate 4; the upper surface of the measurement reference plate 4 is used as a measurement reference surface, and a support base 13 is arranged on the lower surface of the measurement reference plate 4.

The single use process of the present invention is described below with reference to the accompanying drawings:

the clamp-type handle 1 is held in the palm, and the clamp-type handle 1 is properly applied with holding force, the first measuring probe 2 and the second measuring probe 3 can respectively slide in the corresponding waist-shaped holes to a certain extent, so that the distance between the first measuring probe 2 and the second measuring probe 3 is adjusted, and the two measuring probes can just meet the requirement of being inserted into the narrow gap of the pipe joint at the same time.

After the distance between the first measuring probe 2 and the second measuring probe 3 is adjusted, the clamp-type handle 1 is moved, and the two measuring probes are accurately inserted into the narrow gap between the inner pipe joint 14 and the outer pipe joint 15 until the heads of the lower probe sections 9 of the first measuring probe 2 and the second measuring probe 3 abut against the step surface behind the rubber ring on the inner pipe joint 13.

Next, the other hand is used to control the measurement reference plate 4 to move downwards, in the process, the first probe return spring 5 and the second probe return spring 6 are gradually compressed until the support base 13 on the lower surface of the measurement reference plate 4 abuts against the edge of the pipe orifice of the outer pipe joint 15, and at the moment, the numerical value of the insertion amount of the catheter can be directly obtained by looking at the number of the mark lines exposed on the upper surface of the measurement reference plate 4.

When the number of the marking lines exposed on the scale segments 8 of the first measuring probe 2 and the second measuring probe 3 is the same and the difference value is only within the range of the line width of one marking line, it indicates that the insertion error at the two current measuring points is less than 1mm, and indicates that the insertion uniformity is qualified.

After the first pair of two measurement points are measured, the clamp-type handle 1 is moved, the first measurement probe 2 and the second measurement probe 3 are drawn out from a narrow gap between the inner pipe joint 14 and the outer pipe joint 15, the spatial position of the clamp-type handle 1 during the first measurement is taken as a 0-degree reference position, then the clamp-type handle 1 is sequentially rotated to the spatial positions of 45 degrees, 90 degrees and 135 degrees along the circumferential direction of the pipe joint, the measurement of the remaining 6 measurement points is completed according to the measurement process at the 0-degree reference position until the catheter insertion amount and the insertion uniformity of the remaining 6 measurement points are qualified, and the assembly quality of the inserted measurement structure at the position is judged to be qualified due to the fact that all 8 measurement points are uniformly distributed along the circumferential direction of the pipe joint.

The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.

Claims

1. A device for measuring the amount of insertion of a conduit for an aircraft engine, characterized in that: the device comprises a clamp-type handle, a first measuring probe, a second measuring probe, a measuring reference plate, a first probe return spring and a second probe return spring; the first measuring probe and the second measuring probe are identical in structure and are divided into a hinge section, a scale section and a lower probe section, the hinge section is located at the tops of the first measuring probe and the second measuring probe, the lower probe section is located at the bottoms of the first measuring probe and the second measuring probe, and the scale section is located between the hinge section and the lower probe section; a plurality of marking lines are distributed on the surface of the needle rod of the scale section at equal intervals, the line width of each marking line is 1mm, and the interval between every two adjacent marking lines is 1mm; the tip end of one support arm of the clamp-type handle is hinged to the hinged section of the first measuring probe, and the first measuring probe is perpendicular to the plane of the clamp-type handle; the tip end of the other support arm of the clamp-type handle is hinged to the hinging section of the second measuring probe, and the second measuring probe is vertical to the plane of the clamp-type handle; a handle return spring is connected between the two support arms of the clamp-type handle; the measuring reference plate is of an arc line flat plate structure, a first waist-shaped hole is formed in one end of the measuring reference plate, a second waist-shaped hole is formed in the other end of the measuring reference plate, and the first waist-shaped hole and the second waist-shaped hole are distributed in a central symmetry mode relative to the measuring reference plate; the scale section of the first measuring probe is positioned in the first waist-shaped hole, the first measuring probe is in clearance fit with the first waist-shaped hole, and the first probe return spring is sleeved on the scale section of the first measuring probe positioned below the measuring reference plate; the scale section of the second measuring probe is positioned in the second kidney-shaped hole, the second measuring probe is in clearance fit with the second kidney-shaped hole, and the second probe return spring is sleeved on the scale section of the second measuring probe positioned below the measuring reference plate; the upper surface of the measurement datum plate is used as a measurement datum plane, and a support base is arranged on the lower surface of the measurement datum plate.