阅读说明：本技术 一种分段式排气装置 (Sectional type exhaust apparatus ) 是由 刘金超 侯薇 王飒 朱大明 贾志刚 于 2020-07-13 设计创作，主要内容包括：本公开提供了一种分段式排气装置,包括排气入口段、排气入口延伸段、平直段、波纹过渡段、以及排气出口段；排气入口段的第二端口与排气入口延伸段的第一端口相连,平直段的第二端口与波纹过渡段的第一端口相连,波纹过渡段的第二端口与排气出口段的第一端口相连；排气入口延射段的第二端口伸入从平直段的第一端口伸入平直段内。本公开通过设计了排气入口延伸段,用于满足后续有不同排气截面要求的试验需求,只更换一个小部件就能解决问题,不需要重新设计加工整个排气装置,从而可以大大节省试验台改造成本。将排气装置设计为分段式结构,有利于安装人员操作和维护,后期维护时发现某一部位损伤,只需局部更换新的零件即可。(The present disclosure provides a segmented exhaust apparatus, comprising an exhaust inlet section, an exhaust inlet extension section, a straight section, a corrugated transition section, and an exhaust outlet section; the second port of the exhaust inlet section is connected with the first port of the exhaust inlet extension section, the second port of the straight section is connected with the first port of the corrugated transition section, and the second port of the corrugated transition section is connected with the first port of the exhaust outlet section; the second port of the exhaust inlet extension section extends into the straight section from the first port of the straight section. This is disclosed through having designed exhaust inlet extension for satisfy the follow-up experimental demand that has different exhaust cross section requirements, only change a widget just can the problem of solving, need not redesign and process whole exhaust apparatus, thereby can save the test bench transformation cost greatly. The exhaust device is designed into a sectional structure, so that the operation and the maintenance of installation personnel are facilitated, the damage of a certain part is found during later maintenance, and only new parts need to be locally replaced.)

1. A sectional exhaust device is characterized by comprising an exhaust inlet section, an exhaust inlet extension section, a straight section, a corrugated transition section and an exhaust outlet section; the first port of the exhaust inlet section is an exhaust inlet, the second port of the exhaust inlet section is connected with the first port of the exhaust inlet extension section, the second port of the straight section is connected with the first port of the corrugated transition section, and the second port of the corrugated transition section is connected with the first port of the exhaust outlet section; and the second port of the exhaust inlet extension section extends into the straight section from the first port of the straight section.

2. The segmented exhaust of claim 1 wherein the outer cylindrical wall of the straight segment and/or the corrugated transition segment and/or the exhaust outlet segment is provided with a plurality of pulley assemblies for supporting the exhaust for axial movement within the exhaust eductor.

3. The segmented exhaust apparatus as claimed in claim 2, wherein the pulley assembly comprises a pulley bracket and a pulley mounted on the pulley bracket, and an electric limiting mechanism is mounted on one side of the pulley.

4. The sectional exhaust device according to claim 2 or 3, wherein an internal slide rail is provided on an inner wall surface of the exhaust ejector, and the pulley is in rolling engagement with the internal slide rail.

5. A segmented exhaust system according to claim 1, wherein a plurality of test sensors are provided on the straight segment and/or the exhaust outlet segment.

6. A segmented exhaust as claimed in claim 1 wherein the edge portion of the second port of the exhaust inlet segment is provided with an exhaust inlet segment flange; the edge part of the first port of the exhaust inlet extension section is provided with an exhaust inlet extension section flange edge; a first port of the straight section is provided with a straight section flange edge; and the first connecting bolt sequentially penetrates through the flange edge of the exhaust inlet section, the flange edge of the exhaust inlet extension section and the flange edge of the straight section and fixedly connects the exhaust inlet section, the exhaust inlet extension section and the straight section with each other.

7. The segmented exhaust system according to claim 1 wherein the second port of the straight segment is fixedly connected to the first port of the corrugated transition segment by a band assembly; the outer edge of the second port of the straight section is concavely provided with a straight section positioning spigot part, and the inner edge of the first port of the corrugated transition section is concavely provided with a corrugated transition section positioning spigot part; the straight section positioning spigot part is clamped with the corrugated transition section positioning spigot part, and the band clamp assembly comprises a band clamp which is wound around the outer side wall of the corrugated transition section positioning spigot part and is clamped tightly.

8. The segmented exhaust system of claim 7 wherein said straight locating stop is provided with a locating notch and said corrugated transition locating stop is perforated with a locating through hole therethrough; one end of the positioning pin penetrates through the positioning through hole and is inserted into the positioning notch, and the other end of the positioning pin is clamped in the positioning through hole.

9. The segmented exhaust system according to claim 7 wherein the outer side wall of the straight segment and/or the corrugated transition segment is embossed with band retaining edges.

10. The segmented exhaust apparatus as claimed in claim 1, wherein the edge of the second port of the corrugated transition section is provided with a corrugated section right flange, the edge of the first port of the exhaust outlet section is provided with an exhaust outlet section flange, and a second connecting bolt passes through the corrugated section right flange and the exhaust outlet section flange in sequence and fixedly connects the corrugated transition section and the exhaust outlet section.

11. The segmented exhaust device according to any one of claims 1 to 3 and 5 to 10, wherein the corrugated transition section comprises a corrugated section, and the axial section of the wall of the corrugated section is a corrugated line.

Technical Field

The utility model relates to an exhaust device of exhaust injection apparatus especially relates to a sectional type exhaust apparatus.

Background

The exhaust injection device is important pneumatic equipment in a complete machine test run test of an aeroengine, the complete exhaust injection device comprises an injection barrel, an opening diffuser, an exhaust device and a supporting structure, and the complete exhaust injection device is usually made of stainless steel materials and has high cost for resisting long-time thermal fatigue and corrosion damage of high-temperature airflow. For the test bed of the whole aircraft engine for model development, the exhaust injection cylinder devices are designed to be matched with tested engines one by one, and when engines of other models are replaced, if the pneumatic characteristics cannot meet the requirements, the whole exhaust injection cylinder device needs to be replaced, so that the modification cost is very high; for an aircraft engine complete machine test bed for scientific research tests, the model of a tested engine of the scientific research test is not fixed, and the test items and the test requirements for the exhaust wake of the engine are continuously changed along with the research requirements, so that a transition device with various interface matching capabilities or low subsequent modification cost is needed.

In addition, in the past aeroengine test, it is found that the exhaust ejector is damaged by thermal fatigue of high-temperature airflow at the tail of the engine for a long time, and although some test beds adopt measures such as introducing external airflow cooling or spraying water cooling, the exhaust ejector still has crack damage or even cracking after long-time use, and effective measures need to be further taken to prolong the service life and reduce the later maintenance cost.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

In order to solve at least one of above-mentioned technical problem, this disclosure provides a sectional type exhaust apparatus, concrete implementation:

a sectional exhaust device comprises an exhaust inlet section, an exhaust inlet extension section, a straight section, a corrugated transition section and an exhaust outlet section; the first port of the exhaust inlet section is an exhaust inlet, the second port of the exhaust inlet section is connected with the first port of the exhaust inlet extension section, the second port of the straight section is connected with the first port of the corrugated transition section, and the second port of the corrugated transition section is connected with the first port of the exhaust outlet section; and the second port of the exhaust inlet extension section extends into the straight section from the first port of the straight section.

Furthermore, a plurality of pulley assemblies used for supporting the exhaust device to move axially in the exhaust injection device are arranged on the outer cylinder wall of the straight section, and/or the corrugated transition section, and/or the exhaust outlet section.

Further, pulley assembly includes the pulley support and installs in pulley on the pulley support, electronic stop gear is installed to one side of pulley.

Further, an inner sliding rail is arranged on the inner wall surface of the exhaust injection device, and the pulley is in rolling fit with the inner sliding rail.

Further, a plurality of test sensors are arranged on the straight section and/or the exhaust outlet section.

Further, an edge part of the second port of the exhaust inlet section is provided with an exhaust inlet section flange; the edge part of the first port of the exhaust inlet extension section is provided with an exhaust inlet extension section flange edge; a first port of the straight section is provided with a straight section flange edge; and the first connecting bolt sequentially penetrates through the flange edge of the exhaust inlet section, the flange edge of the exhaust inlet extension section and the flange edge of the straight section and fixedly connects the exhaust inlet section, the exhaust inlet extension section and the straight section with each other.

Further, the second port of the flat section is fixedly connected with the first port of the corrugated transition section through a belt assembly; the outer edge of the second port of the straight section is concavely provided with a straight section positioning spigot part, and the inner edge of the first port of the corrugated transition section is concavely provided with a corrugated transition section positioning spigot part; the straight section positioning spigot part is clamped with the corrugated transition section positioning spigot part, and the band clamp assembly comprises a band clamp which is wound around the outer side wall of the corrugated transition section positioning spigot part and is clamped tightly.

Furthermore, a positioning notch is formed in the positioning spigot part of the straight section, and a through positioning through hole is shot at the positioning spigot part of the corrugated transition section; one end of the positioning pin penetrates through the positioning through hole and is inserted into the positioning notch, and the other end of the positioning pin is clamped in the positioning through hole.

Further, the outer side wall of the straight section and/or the corrugated transition section is convexly provided with a strap positioning edge.

Furthermore, the edge part of the second port of the corrugated transition section is provided with a corrugated section right flange, the edge part of the first port of the exhaust outlet section is provided with an exhaust outlet section flange, and a second connecting bolt sequentially penetrates through the corrugated section right flange and the exhaust outlet section flange and fixedly connects the corrugated transition section and the exhaust outlet section.

Furthermore, the corrugated transition section comprises a corrugated section, and the axial section of the cylinder wall of the corrugated section is a corrugated line.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a schematic structural view of a segmented exhaust apparatus of the present disclosure;

FIG. 2 is a schematic connection diagram of an exhaust inlet section of the present disclosure;

fig. 3 is a schematic structural view of the sheave assembly of the present disclosure;

FIG. 4 is a corrugated transition piece connection schematic of the present disclosure;

FIG. 5 is a schematic view of the strap assembly attachment of the present disclosure;

in the figure:

a test sensor 2; an exhaust injection device 3; an exhaust gas inlet section 4; an exhaust gas inlet extension 5; a straight section 6; a pulley assembly 7; a corrugated transition section 8; an exhaust outlet section 9; exhaust inlet section flange 41; exhaust inlet section bolt holes 42; exhaust inlet extension flange 51; exhaust inlet extension bolt holes 52; a straight section flange edge 61; straight section bolt holes 62; a first connecting bolt 100; an inner slide rail 31; a pulley 71; an electric limit mechanism 72; mounting bolts 73; a regulating washer 74; a pulley bracket 75. The right flange edge 81 of the corrugated section; a flange bolt hole 82 on the right side of the corrugated section; an exhaust outlet section flange 91; exhaust outlet section flange bolt holes 92; a second attachment bolt 110; the cuff assembly 120; a cuff 121; the corrugated transition section locating spigot 122; a positioning pin 123; the straight section positioning spigot 123; the cuff locates the edge 125.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, the present embodiment provides a sectional exhaust apparatus, which includes an exhaust inlet section 4, an exhaust inlet extension section 5, a straight section 6, a corrugated transition section 8, and an exhaust outlet section 9; the first port of the exhaust inlet section 4 is an exhaust inlet, the second port of the exhaust inlet section 4 is connected with the first port of the exhaust inlet extension section 5, the second port of the straight section 6 is connected with the first port of the corrugated transition section 8, and the second port of the corrugated transition section 8 is connected with the first port of the exhaust outlet section 9; the second port of the exhaust inlet extension section extends into the straight section 6 from the first port of the straight section 6. The straight section 6 and/or the exhaust outlet section 9 are provided with a plurality of test sensors 2.

The exhaust inlet extension section 5 is arranged between the exhaust inlet section 4 and the flat section 6, is designed to be a replaceable part, and can be processed into parts with different section parameters according to test requirements. When the exhaust test research with smaller exhaust cross section area is not needed, the exhaust inlet extension section 5 is taken down and only the exhaust inlet section 4 and the straight section 6 and other components are connected; when the experimental research of the exhaust that needs to carry out less exhaust cross sectional area, install exhaust inlet extension 5 between exhaust inlet section 4 and straight section 6 to satisfy the experimental demand through changing a widget, greatly reduced reforms transform the cost.

According to the sectional type exhaust device, on the premise that the original test bed exhaust injection device 3 is reserved, the inlet exhaust extension section is designed to be a replaceable part, and the exhaust device does not need to be integrally replaced during transformation, so that the scientific research and test requirements are met through low cost, and the test transformation cost is greatly reduced; the process exhaust device is designed into a sectional structure, so that the process exhaust device is beneficial to operation and maintenance of installation personnel, damage to a certain part is found during later maintenance, and only new parts need to be locally replaced.

The outer cylinder wall of the straight section 6, and/or the corrugated transition section 8, and/or the exhaust outlet section 9 is provided with a plurality of pulley assemblies 7 for supporting the exhaust device to move axially in the exhaust ejector 3.

Referring to fig. 1 and 3, the pulley assembly 7 includes a pulley bracket 75 and a pulley 71 mounted on the pulley bracket 75, the pulley bracket 75 is fixed to the outer cylindrical wall of the straight section 6, and/or the outer cylindrical wall of the corrugated transition section 8, and/or the outer cylindrical wall of the exhaust outlet section 9 by a mounting bolt 73, an adjusting washer 74 is mounted between the pulley bracket 75 and the outer cylindrical wall, and the distance between the pulley bracket 75 and the outer cylindrical wall can be adjusted by adjusting the number or thickness of the adjusting washers 74, which is convenient for a worker to actually install and adjust.

An inner slide rail 31 is arranged on the inner wall surface of the exhaust injection device 3, and the pulley 71 is in rolling fit with the inner slide rail 31. The sectional type process exhaust device is connected with the original exhaust injection device 3 of the test bed through the pulley assembly 7 and the sliding rails, the pulley assembly 7 is arranged on the outer side of the sectional type process exhaust device, the sliding rails are arranged on the inner side of the exhaust injection device 3, axial movement of the sectional type process exhaust device is achieved through the pulleys 71 between the sectional type process exhaust device and the sliding rails, the distance between the sectional type process exhaust device and the nozzle of the engine can be adjusted according to test requirements, the functionality of the test device is improved, and more test data are obtained.

An electric limiting mechanism 72 is installed on one side of the pulley 71. When an operator moves the sectional type process exhaust device to a designated position along the axial direction of the engine, the operator remotely controls the electric limiting mechanism 72 to fix the pulley 71, so that the axial degree of freedom is guaranteed to be locked. Meanwhile, the sliding rail is circumferentially fixed relative to the pulley 71, so that the exhaust device can be prevented from circumferentially sliding.

This is disclosed has realized the axial distance between exhaust apparatus and the engine nozzle through pulley 71 mechanism and has adjusted, has promoted the flexibility of test bench, has expanded the functionality. The pulley assembly 7 is designed between the process exhaust device and the original exhaust injection device 3 and used for axial movement, so that a tester can adjust the axial distance between the exhaust device and the nozzle of the engine according to test requirements at any time, and more test data can be acquired for scientific research.

Referring to fig. 1 and 2, the edge portion of the second port of the exhaust gas inlet section 4 is provided with an exhaust gas inlet section flange 41; the edge part of the first port of the exhaust inlet extension section 5 is provided with an exhaust inlet extension section flange 51; a first port of the straight section 6 is provided with a straight section flange edge 61; an exhaust inlet section bolt hole 42 is formed in the exhaust inlet section flange edge 41, and an exhaust inlet extension section bolt hole 52 is formed in the exhaust inlet extension section flange edge 51. The straight section flange edge 61 is provided with a straight section bolt hole 62. The first connecting bolt 100 passes through the exhaust inlet section bolt hole 42 of the exhaust inlet section flange 41, the exhaust inlet extension section bolt hole 52 of the exhaust inlet extension section flange 51 and the straight section bolt hole of the straight section flange 61 in sequence, and fixedly connects the exhaust inlet section 4, the exhaust inlet extension section 5 and the straight section 6 to each other.

Referring to fig. 1 and 5, the second port of the flat section 6 is fixedly connected with the first port of the corrugated transition section 8 through a band assembly 120; the outer edge of the second port of the straight section 6 is concavely provided with a straight section positioning spigot 123 part, and the inner edge of the first port of the corrugated transition section 8 is concavely provided with a corrugated transition section positioning spigot 122 part; the flat positioning seam 123 is engaged with the corrugated transition positioning seam 122, and the band assembly 120 includes a band 121, and the band 121 is tightened around the outer sidewall of the corrugated transition positioning seam 122.

A positioning notch is arranged at the positioning spigot 123 part of the straight section, and a through positioning through hole is shot at the positioning spigot 122 part of the corrugated transition section; one end of the positioning pin 123 penetrates through the positioning through hole and is inserted into the positioning notch, and the other end of the positioning pin 123 is clamped in the positioning through hole. The outer side wall of the straight section 6 and/or the corrugated transition section 8 is convexly provided with a strap positioning edge 125.

Referring to fig. 1 and 4, the edge of the second port of the corrugated transition section 8 is provided with a corrugated section right flange edge 81, and the edge of the first port of the exhaust outlet section 9 is provided with an exhaust outlet section flange edge 91; the right flange edge 81 of the corrugated section is provided with a bolt hole 82 of the right flange edge of the corrugated section; the exhaust outlet section flange edge 91 is provided with an exhaust outlet section flange edge bolt hole 92; the second connecting bolt 110 sequentially passes through the right flange bolt hole 82 of the corrugated section and the flange bolt hole 92 of the exhaust outlet section, and fixedly connects the corrugated transition section 8 and the exhaust outlet section 9.

The corrugated transition section 8 is arranged between the straight section 6 and the exhaust outlet section 9, is designed into a rigid structure and is made of high-temperature-resistant materials. The corrugated transition section 8 comprises a corrugated section, and the axial section of the cylinder wall of the corrugated section is a corrugated line. The axial expansion and contraction amount of the device is a certain degree, and the device is used for sharing the thermal fatigue load of a part of process exhaust devices, reducing the fatigue damage caused by thermal expansion and cold contraction deformation and prolonging the service life of the device.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.