CN212058644U

CN212058644U - Mutual-impact type small hole detection device for injection disc

Info

Publication number: CN212058644U
Application number: CN202021136831.9U
Authority: CN
Inventors: 曾雪宁; 郝雪杰; 张迎港
Original assignee: Hubei Sanjiang Aerospace Honglin Exploration and Control Co Ltd
Current assignee: Hubei Sanjiang Aerospace Honglin Exploration and Control Co Ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2020-12-01
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a mutual-impact jetting disc small hole detection device, which comprises a mutual-impact jetting disc, an angle adjusting device and an optical measurement system; the angle adjusting device comprises a jetting disc base, a backlight plate, a rotating sliding table and an angle measuring instrument sliding table, wherein the jetting disc is arranged on the jetting disc base in a mutual-impacting mode and is positioned through a positioning pin; the optical measurement system comprises an optical camera, an image processor and a display, wherein the optical camera, the image processor and the display are sequentially in signal connection, the optical camera is supported by a support, and a lens of the optical camera is arranged right opposite to the mutual impact type jetting disc. The detection device can accurately measure the size of the small hole of the mutual impact type injection plate and detect the surface roughness of the inner hole, avoids the contact damage to the small hole in the detection process, improves the measurement efficiency and reduces the measurement error.

Description

Mutual-impact type small hole detection device for injection disc

Technical Field

The utility model belongs to the technical field of liquid rocket engine jet dish technique and specifically relates to a mutual impact formula jet dish aperture detection device.

Background

The mutual-impact type injection plate is the most critical part in the injector of the liquid rocket engine, and the processing quality of the injection hole determines the key technical indexes of the engine such as fuel atomization performance, combustion efficiency, specific impulse, combustion stability and the like. Before the mutual-impact type injection plate is welded into an injector, whether indexes such as the size, the angle, the surface roughness and the like of a plurality of groups of mutual-impact type injection holes which are concentrically arranged on the injection plate are qualified needs to be detected.

The existing detection methods of the small holes of the mutual impact type injection plate are basically divided into a contact type detection method and a non-contact type detection method, the size range of the injection holes is measured by adopting plugs and stop gauges, and the size of the injection holes is measured after an optical measurement system is used for shooting the injection holes. For some small liquid rocket engines, the minimum size of the small holes of the mutual impact type injection plate is about 0.15mm, and the small holes of two adjacent groups are arranged at a certain angle. If a contact detection method is adopted, the angle size cannot be measured, and the hard plug gauge can damage an orifice sharp edge, scratch the surface of an inner hole and even can be interrupted in the detection process and cannot be taken out of the hole; the non-contact detection method has a good detection effect on a plane hole, but the inclined hole with an angle has the problems of inaccurate central axis, large error between the measured size and the form and position, incapability of measuring the angle size and the like, so that the quality of the mutual impact type injection disk cannot be ensured.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a mutual impact type is spouted and is coiled aperture detection device, this detection device can realize that mutual impact type is spouted and coil for the triaxial motion of optical camera and the measurement of angle, and cooperation optical measurement system carries out aperture dimensional measurement and hole roughness inspection, has avoided in the testing process to the contact destruction of aperture, has improved measurement of efficiency simultaneously, has reduced measuring error.

A mutual impact type jetting disc small hole detection device comprises a mutual impact type jetting disc, an angle adjusting device and an optical measurement system;

the angle adjusting device comprises a jetting disc base, a backlight plate, a rotating sliding table and an angle measuring instrument sliding table, wherein the mutual-impact jetting disc is installed on the jetting disc base and is positioned through a positioning pin;

the optical measurement system comprises an optical camera, an image processor and a display, wherein the optical camera, the image processor and the display are sequentially in signal connection, the optical camera is supported by a support, a lens of the optical camera is arranged right opposite to the mutual impact type injection disk, and the support is installed on the carrying platform.

Preferably, the two angle sliding instrument platforms are arranged and are perpendicular to each other.

Preferably, in the above-described aspect, the optical camera is slidable up and down with respect to the holder.

Preferably, in the above technical solution, a threaded through hole is formed in a side surface of the injection plate base, and the mutual-impact injection plate is laterally clamped by a fastening screw.

Preferably, the backlight plate adopts an LED light source, and the brightness of the backlight plate can be adjusted.

Preferably, the rotary sliding table and the angle measuring instrument sliding table are provided with angle measuring scales.

Preferably, the rotary sliding table can rotate along the rotary shaft thereof in two directions.

Preferably, the sliding table of the goniometer can rotate bidirectionally along the arc track.

The utility model has the advantages that:

1. the operating device is matched with the optical measurement system to detect the small hole of the injection disk, so that damage caused by contact measurement is avoided, and errors caused by optical measurement are reduced.

2. The three-axis motion of the mutual impact type injection disk relative to the optical lens can be realized, and the relative angle size of each small hole can be measured.

3. The rotary sliding table and the goniometer sliding table are adopted to mechanically position the small hole, so that repeated manual operation of frequently moving the optical lens to align the small hole is reduced, and the detection efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the angle adjusting device of the present invention.

Fig. 3 is a schematic view of the rotating direction structure of the rotating slide table and the goniometer slide table.

Fig. 4 is a cross-sectional view of a reciprocal impact jetting disk.

The reference numbers are as follows: the injection device comprises a 1-mutual impact type injection plate, a 2-injection plate base, a 3-backlight plate, a 4-rotary sliding table, a 5-goniometer sliding table, a 6-positioning pin, a 7-carrying platform, an 8-optical camera, a 9-image processor, a 10-display, a 11-bracket, a 12-threaded through hole, a 13-fastening screw, a 14-small hole I and a 15-small hole II.

Detailed Description

The present embodiment is described in detail below with reference to the accompanying drawings.

The mutual-impact type jetting disc small hole detection device shown in fig. 1-4 comprises a mutual-impact type jetting disc 1, an angle adjusting device and an optical measurement system;

the angle adjusting device comprises a jetting disc base 2, a backlight plate 3, a rotating sliding table 4 and an angle measuring instrument sliding table 5, wherein the mutual-striking jetting disc 1 is installed on the jetting disc base 2 and is positioned through a positioning pin 6, the jetting disc base 2, the rotating table 4 and the angle measuring instrument sliding table 5 are sequentially arranged and fixedly connected, the angle adjusting device is installed on a carrying platform 7, and the backlight plate 3 is installed between the jetting disc base 2 and the rotating sliding table 4;

the optical measurement system comprises an optical camera 8, an image processor 9 and a display 10, wherein the optical camera 8, the image processor 9 and the display 10 are sequentially in signal connection, the optical camera 8 is supported by a support 11, a lens of the optical camera is arranged right opposite to the mutual impact type injection plate 1, and the support 11 is installed on a carrying platform 7.

In this embodiment, two angle sliding instrument tables 5 are provided, and the two angle sliding instrument tables 5 are perpendicular to each other.

In this embodiment, the optical camera 8 is slidable up and down with respect to the holder 11.

In the present embodiment, the injection plate base 2 is provided with a threaded through hole 12 on the side for laterally clamping the interbroker injection plate 1 by a fastening screw 13.

In this embodiment, the backlight plate 3 employs LED light sources, and the brightness thereof can be adjusted.

In this embodiment, the rotary slide 4 and the goniometer slide 5 are both provided with angle measurement scales.

In the present embodiment, the rotary slide table 4 is capable of bidirectional rotation along its axis of rotation.

In the present embodiment, the goniometer stage 5 can rotate bidirectionally along its circular arc orbit.

The specific working principle of this embodiment is as follows.

For convenience of description, the two sliding tables of the goniometer are divided into a first sliding table of the goniometer and a second sliding table of the goniometer, Y2 refers to the movement direction of the first sliding table of the goniometer, and Y3 refers to the movement direction of the second sliding table of the goniometer; in addition, Y1 indicates the moving direction of the rotary slide table.

Fixing an angle adjusting device on an object carrying platform 7, installing a mutual impact type injection disk 1 in an injection disk base 2, positioning through a positioning pin 6, clamping and fixing through a fastening screw 13, adjusting knobs of a rotary sliding table 4 and two goniometer sliding tables 5 through an image of a small hole I14 displayed by a display 10, and moving the small hole I14 to be measured to a position which is aligned and vertical to a lens of an optical camera 8 along the movement direction Y1 of the rotary sliding table, the movement direction Y2 of a primary goniometer sliding table and the movement direction Y3 of a secondary goniometer sliding table; adjusting the focusing of an optical camera 8, amplifying the small hole I14 to a proper size, adjusting the brightness of the backlight plate 3, measuring the size of the small hole I14, detecting the surface roughness of the inner hole, and recording the angle scale values of the rotary sliding table 4 and the two goniometer sliding tables 5 at the moment; after the small hole I14 is measured, the knob of the rotary sliding table 4 is adjusted again, and adjacent small holes in the same reference circle are measured according to the same method; after all the small holes in one reference circle are measured, measuring the small hole II 15 and other small holes in the reference circle by the same method; therefore, the inner hole size, the circumferential included angle, the specific measurement value of the inclination angle, the form and position error, the surface roughness and other related information of each small hole can be obtained.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mutual impact type small hole detection device of an injection plate is characterized in that: comprises a mutual impact type jetting disc, an angle adjusting device and an optical measuring system;

2. The detection device according to claim 1, wherein: the angle sliding measuring instrument platform is provided with two angle sliding measuring instrument platforms which are perpendicular to each other.

3. The detection device according to claim 1, wherein: the optical camera can slide up and down relative to the bracket.

4. The detection device according to claim 1, wherein: the side surface of the injection plate base is provided with a threaded through hole, and the mutual-impact injection plate is laterally clamped through a fastening screw.

5. The detection device according to claim 1, wherein: the backlight plate adopts an LED light source, and the brightness of the backlight plate can be adjusted.

6. The detection device according to claim 2, wherein: rotatory slip table and goniometer slip table all are equipped with the angle measurement scale.

7. The detection device according to claim 6, wherein: the rotary sliding table can rotate in two directions along a rotary shaft of the rotary sliding table.

8. The detection device according to claim 6, wherein: the sliding table of the goniometer can rotate along the arc track in two directions.