阅读说明：本技术 一种航空发动机导管锥面着色检测装置及检测方法 (Device and method for detecting coloring of conical surface of aircraft engine guide pipe ) 是由 *** 陈海筠 任相杰 陈立 牟青 杜爽 于 2020-06-11 设计创作，主要内容包括：本发明公开了一种航空发动机导管锥面着色检测装置及检测方法,包括工作量规、设置在工作量规前端的检测锥面、设置在工作量规后端的夹持部、设置在工作量规上并位于检测锥面与夹持部之间的检测螺纹以及与工作量规配合的检验量规,检测锥面的锥度与被测零件的锥度相同,本发明操作方便、可靠性好,有效地解决了管端密封锥面的着色检查问题。保证了管端密封锥面的着色检查效果及合格率,对导管组件的密封性能提供强有力的验证,具有较大的使用价值。(The invention discloses a device and a method for detecting coloring of a conical surface of a conduit of an aircraft engine, which comprises a working gauge, a detection conical surface arranged at the front end of the working gauge, a clamping part arranged at the rear end of the working gauge, a detection thread arranged on the working gauge and positioned between the detection conical surface and the clamping part, and a detection gauge matched with the working gauge, wherein the taper of the detection conical surface is the same as that of a part to be detected. The coloring inspection effect and the qualification rate of the pipe end sealing conical surface are ensured, the sealing performance of the catheter component is verified powerfully, and the catheter component has a great use value.)

1. The utility model provides an aeroengine pipe conical surface detection device that stains, characterized in that, including work gauge (1), set up detection conical surface (2) in work gauge (1) front end, set up clamping part (3) in work gauge (1) rear end, set up on work gauge (1) and lie in detection screw thread (4) between detection conical surface (2) and clamping part (3) and with work gauge (1) complex inspection gauge (5), the tapering of detecting conical surface (2) is the same with the tapering of surveyed part.

2. The aircraft engine duct cone coloring detection device according to claim 1, characterized in that the inspection gauge (5) is provided with an inspection cone (6) corresponding to the inspection cone (2).

3. The aircraft engine duct cone coloring detection device according to claim 1, characterized in that the cross-sectional shape of the clamping portion (3) is a regular hexagon.

4. The method for detecting the coloring of the conical surface of the guide pipe of the aircraft engine is characterized by sequentially comprising the following steps of:

s1: preparing a coloring agent according to the formula requirement;

s2: coating a proper amount of coloring agent on the detection conical surface (2) of the working gauge (1), enabling the detection conical surface (2) of the working gauge (1) and the inspection conical surface (6) of the inspection gauge (5) to be mutually attached, then comparing the coloring layer tone depth of the detection conical surface (2) with the coloring layer tone depth of the inspection conical surface (6), and determining that the detection conical surface (2) of the working gauge (1) meets the requirements;

s3: fixing the detected conduit on a clamp, attaching a detection conical surface (2) meeting the requirements to the conical surface of the detected conduit, fixing a working gauge (1), screwing a pipe end outer sleeve nut of the detected conduit to a stop position of a detection thread (4), and applying torque to the pipe end outer sleeve nut according to a specified value by a torque wrench;

s4: after standing for a period of time, the connection is released, and when the connection is released, no relative circumferential displacement is generated between the conical surfaces;

s5: the conical surface of the examined catheter is inspected for traces of coloration.

5. The aircraft engine duct cone coloring detection method according to claim 4, characterized in that: the formulation of the colorant in step S1 is such that the ferrocyanide powder is liberated with industrial lubricating oil and stirred in the sulfurized castor oil to a creamy alcoholic state.

6. The aircraft engine duct cone coloring inspection method according to claim 4, characterized in that a tool is used to fix the clamping portion (3) of the working gauge (1) when fixing the working gauge (1) in step S3.

7. The method for detecting coloring of tapered surfaces of an aircraft engine conduit according to claim 4, wherein the standing time in step S4 is 1 to 2 minutes.

8. The method for detecting coloring of tapered surface of duct of aircraft engine as claimed in claim 4, wherein the qualified criterion of the duct to be detected in step S5 is that the coloring trace should be an uninterrupted ring shape, and the minimum width area and distribution of the ring-shaped coloring trace should meet the relevant regulations.

Technical Field

The invention relates to the field of a spacious engine, in particular to a device and a method for detecting coloring of a conical surface of a conduit of an aircraft engine.

Background

The engine ducts are distributed throughout the engine body and transport various fluids, and are called as engine blood vessels. Therefore, the sealing performance of the pipe end is extremely important. After the tube end sealing conical surface is formed, the conical surface is required to be colored and checked, and the conical surface forming quality is verified. The traditional conical surface coloring gauge is in a 74-degree outer conical surface structure, coloring agents are uniformly coated on the outer conical surface, a part and the coloring gauge are held manually, and coloring inspection is carried out on the conical surface according to hand feeling. The method is greatly influenced by human factors. Meanwhile, after the conical surface is formed, trace resilience exists, and the angle of the conical surface of the pipe end and the taper of the coloring gauge cannot be completely attached under the action of relatively small manual holding force, so that the coloring inspection qualification rate of the conical surface of the pipe end is low.

Disclosure of Invention

The invention provides a device and a method for detecting coloring of a conical surface of a duct of an aircraft engine aiming at the defects of the prior art, and the specific technical scheme is as follows:

the utility model provides an aeroengine pipe conical surface detection device that stains, includes the work gauge, sets up the detection conical surface in work gauge front end, sets up the clamping part in work gauge rear end, sets up on the work gauge and lie in the detection screw thread that detects between conical surface and the clamping part and with the inspection gauge of work gauge cooperation, the tapering of detecting the conical surface is the same with the tapering of the part of being surveyed.

Preferably, the inspection gauge is provided with an inspection taper corresponding to the detection taper.

Preferably, the cross-sectional shape of the clamping portion is a regular hexagon.

A method for detecting coloring of a conical surface of a guide pipe of an aircraft engine sequentially comprises the following steps:

s1: preparing a coloring agent according to the formula requirement;

s2: coating a proper amount of coloring agent on the detection conical surface of the working gauge, attaching the detection conical surface of the working gauge and the detection conical surface of the detection gauge to each other, comparing the color tone depth of the coloring layer of the detection conical surface with the color tone depth of the coloring layer of the detection conical surface, and determining that the detection conical surface of the working gauge meets the requirements;

s3: fixing the detected conduit on a clamp, attaching a detection conical surface meeting the requirements to the conical surface of the detected conduit, fixing a working gauge, screwing a pipe end outer sleeve nut of the detected conduit to a stop position of a detection thread, and applying torque to the pipe end outer sleeve nut according to a specified value by a torque wrench;

s4: after standing for a period of time, the connection is released, and when the connection is released, no relative circumferential displacement is generated between the conical surfaces;

s5: the conical surface of the examined catheter is inspected for traces of coloration.

Preferably, the colorant formulation in step S1 is a blue iron ore powder that is liberated with an industrial lubricant and stirred in sulfurized castor oil to a creamy alcohol.

Preferably, the clamping portion of the work gauge is fixed by a tool when the work gauge is fixed in step S3.

Preferably, the standing time in step S4 is 1 to 2 minutes.

Preferably, the qualified criterion of the examined catheter in step S5 is that the coloring trace should be an uninterrupted ring shape, and the minimum width area and distribution of the ring-shaped coloring trace should meet the relevant regulations.

The invention has the following beneficial effects:

the structure of the working gauge is optimally designed, and the outer side of the working gauge is provided with a detection thread corresponding to the pipe end outer sleeve nut, so that when the sealing conical surface of the pipe end of the engine conduit is subjected to coloring inspection, the working gauge is fixed, and a certain screwing torque is applied to the pipe end outer sleeve nut by using a torque wrench, so that the detection conical surface of the working gauge is tightly attached to the sealing inner conical surface of the pipe end, and the coloring inspection is performed. The coloring mode can ensure that the outer conical surface of the coloring gauge is tightly attached to the sealed inner conical surface of the pipe end, and can simulate the actual assembly state of the pipe end of the catheter to perform coloring inspection, so that the coloring effect is more accurate, the actual state is met, and the qualified rate of the coloring inspection of the sealed conical surface of the pipe end is improved. The invention has convenient operation and good reliability, and effectively solves the coloring inspection problem of the sealing conical surface of the pipe end. The coloring inspection effect and the qualification rate of the pipe end sealing conical surface are ensured, the sealing performance of the catheter component is verified powerfully, and the catheter component has a great use value.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view in the use process of the present invention.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.