阅读说明：本技术 一种单片导向叶片排气面积的测量装置 (Measuring device for exhaust area of single guide vane ) 是由 邱枫 杨莉玫 王均 王亚岚 肖国郁 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种单片导向叶片排气面积的测量装置,属于航空发动机检测技术领域。一种单片导向叶片排气面积的测量装置,包括：底座、以及均设置在底座上的固定装置和模拟装置；固定装置包括设置在底座两端的第一定位组件和第二定位组件；模拟组件包括设置在底座一侧的第一背侧叶片模拟块和第二背侧叶片模拟块,以及设置在底座另一侧的第一盆侧叶片模拟块、第二盆侧叶片模拟块、大缘板模拟块以及小缘板模拟块。本发明可以通过测量得到单个待测叶片的排气面积值,通过对多个叶片进行筛选、匹配,从中挑选出数量为一台份的总排气面积值符合设计图要求的叶片进行装配,可有效减少在导向叶片的装配、测量次数,最终实现一次性装配。(The invention discloses a device for measuring the exhaust area of a single guide vane, and belongs to the technical field of aeroengine detection. A single guide vane exhaust area measurement device comprising: the simulation device comprises a base, a fixing device and a simulation device, wherein the fixing device and the simulation device are arranged on the base; the fixing device comprises a first positioning component and a second positioning component which are arranged at two ends of the base; the simulation assembly comprises a first dorsal side blade simulation block and a second dorsal side blade simulation block which are arranged on one side of the base, and a first basin side blade simulation block, a second basin side blade simulation block, a large edge plate simulation block and a small edge plate simulation block which are arranged on the other side of the base. The invention can obtain the exhaust area value of a single blade to be measured through measurement, and selects the blades of which the total exhaust area value is in accordance with the requirement of a design drawing from the blades through screening and matching the blades, thereby effectively reducing the assembly and measurement times of the guide blades and finally realizing one-time assembly.)

1. A single guide vane discharge area measurement device comprising: the simulation device comprises a base (10), and a fixing device and a simulation device which are arranged on the base (10);

the fixing device comprises a first positioning component (21) and a second positioning component (22) which are arranged at two ends of the base (10);

the simulation assembly (30) comprises a first back-side blade simulation block (310) and a second back-side blade simulation block (320) which are arranged on one side of the base (10), and a first basin-side blade simulation block (330), a second basin-side blade simulation block (340), a large flange plate simulation block (350) and a small flange plate simulation block (360) which are arranged on the other side of the base (10); the large flange simulating block (350) is adjacent to the first positioning assembly (21), and the small flange simulating block (360) is adjacent to the second positioning assembly (22).

2. The single guide vane exhaust area measurement device according to claim 1, wherein the first back-side vane simulation block (310) and the second back-side vane simulation block (320) are provided with a first exhaust edge simulation surface (311) on the sides facing the middle of the base (10), respectively.

3. The single guide vane discharge area measurement device of claim 2, wherein the first and second basin-side vane simulation blocks (330, 340) each comprise a back-side simulation surface (331), a third discharge edge simulation surface (332), and a reference surface (333); the back-side simulation surface (331) is formed on one side of the first basin-side blade simulation block (330) or the second basin-side blade simulation block (340) close to the middle of the base (10); the third exhaust edge simulation surface (332) is formed on the top surface of the first basin side blade simulation block (330) or the second basin side blade simulation block (340); the reference surface (333) is formed on one side, far away from the middle part of the base (10), of the first basin-side blade simulation block (330) or the second basin-side blade simulation block (340), and the reference surface (333) is perpendicular to the third exhaust edge simulation surface (332).

4. The single guide vane exhaust area measurement device according to claim 3, wherein the side of the large platform simulation block (350) facing the middle of the base (10) is provided with a large platform passage simulation surface (351), and the side of the small platform simulation block (360) facing the middle of the base (10) is provided with a small platform passage simulation surface (361).

5. The single guide vane exhaust area measurement device of claim 1, wherein the first positioning assembly (21) comprises a first positioning seat (23), a first limiting seat (24) and a pressing seat (25); the first positioning seat (23) is provided with a first supporting surface (231) and an end limiting surface (232) which are perpendicular to each other; the first limiting seat (24) is provided with a large edge plate limiting surface (241); the pressing seat (25) is provided with a top limiting surface (251).

6. The single guide vane air discharge area measurement device of claim 5, wherein the second positioning assembly (22) comprises a second positioning seat (26), a second limiting seat (27) and the pressing seat (25); the second positioning seat (26) is provided with a second supporting surface (261); the second limiting seat (27) is provided with a small edge plate limiting surface (271).

7. The single guide vane air discharge area measurement device of claim 6, wherein the hold down (25) comprises a guide rod (252) and a hold down block (253); one end of the guide rod (252) is connected with the base (10), the other end of the guide rod (252) penetrates through the pressing block (253) and is provided with a knurled nut (254), and a spring (255) with two ends respectively in contact with the base (10) and the pressing block (253) is sleeved on the guide rod (252); the top limiting surface (251) is formed on the bottom wall of the pressing block (253).

8. The single guide vane exhaust area measurement device of any one of claims 1 to 7, wherein the base (10) is further provided with a ball stud (11).

Technical Field

The invention relates to the technical field of aero-engine detection, in particular to a device for measuring the exhaust area of a single guide vane.

Background

The exhaust area is an important parameter of the engine, and is obtained by measuring a measuring point specified by a design chart between adjacent guide blades by using a digital exhaust area measuring tool in the assembly process of the guide casing assembly. And measuring from the first group of guide vanes to the last group of guide vanes, calculating all measured data according to a formula to obtain a total exhaust area value, comparing the total exhaust area value with a theoretical area specified by a design file, and judging whether the total exhaust area value is in a tolerance range to determine whether the total exhaust area value is qualified. If not, replacing the blades according to the condition that the total area value is larger or smaller, measuring the area value between the replaced blades, replacing the old data at the same position with the new data, calculating whether the total area is qualified again, and if not, continuing to replace and measure until the total area is qualified. The current assembling and measuring mode has the disadvantages of more times, low efficiency and long assembling period.

Disclosure of Invention

The invention aims to provide a device for measuring the exhaust area of a single guide vane, which is used for solving the problems of low guide vane assembly efficiency and long assembly period in the existing guide vane casing.

The technical scheme for solving the technical problems is as follows:

a single guide vane exhaust area measurement device comprising: the simulation device comprises a base, a fixing device and a simulation device, wherein the fixing device and the simulation device are arranged on the base;

the fixing device comprises a first positioning component and a second positioning component which are arranged at two ends of the base;

the simulation assembly comprises a first back-side blade simulation block and a second back-side blade simulation block which are arranged on one side of the base, and a first basin-side blade simulation block, a second basin-side blade simulation block, a large edge plate simulation block and a small edge plate simulation block which are arranged on the other side of the base; the large flange plate simulation block is close to the first positioning assembly, and the small flange plate simulation block is close to the second positioning assembly.

The first positioning assembly and the second positioning assembly respectively fix the blade to be tested and simulate the position of the blade to be tested in the guide casing. The first back-side blade simulation block and the second back-side blade simulation block are used for simulating the positions of adjacent blades located on the back side of the blade to be tested in the casing. The first basin side blade simulation block, the second basin side blade simulation block, the large edge plate simulation block and the small edge plate simulation block are used for simulating the positions of adjacent blades on the basin side of the blade to be tested in the casing. The exhaust area of the back side and the basin side of the blade to be measured can be measured respectively through the digital exhaust area measuring tool, the exhaust area value of a single blade to be measured can be obtained, the exhaust areas of a plurality of blades are screened and matched, the blades of which the total exhaust area value is one set are selected to meet the requirements of a design drawing to be assembled, the assembling and measuring times of the guide blades can be effectively reduced, the measurement of the exhaust area during the assembling process without the need of assembling is realized at last, the production period is shortened, and the efficiency is improved.

Further, the first back-side blade simulation block and the second back-side blade simulation block are respectively provided with a first exhaust edge simulation surface on one side facing the middle part of the base.

When the digital exhaust area measuring tool is used for measuring the exhaust area of the exhaust channel at the back side of the blade to be measured, the width movable measuring head only needs to be in contact with the exhaust edge of the adjacent blade at the back side of the blade to be measured, and the first exhaust edge simulation surface is used for simulating the tangent plane of the contact point of the width movable measuring head and the exhaust edge of the adjacent blade. And two dorsal blade simulation blocks are provided for matching the two measurement points specified in the design drawings.

Further, the first basin-side blade simulation block and the second basin-side blade simulation block both comprise a back-side simulation surface, a third exhaust edge simulation surface and a reference surface; the back side simulation surface is formed on one side, close to the middle part of the base, of the first basin side blade simulation block or the second basin side blade simulation block; the third exhaust edge simulation surface is formed on the top surface of the first basin side blade simulation block or the second basin side blade simulation block; the datum plane is formed on one side, away from the middle part of the base, of the first basin side blade simulation block or the second basin side blade simulation block, and the datum plane is perpendicular to the third exhaust edge simulation plane.

When the digital exhaust area measuring tool is used for measuring the exhaust area of the exhaust channel on the basin side of the blade to be measured, the cross positioning surface of the positioning block needs to be in contact positioning with the exhaust edge of the adjacent blade on the basin side of the blade to be measured, and the third exhaust edge simulation surface and the reference surface are in contact with the cross positioning surface and used for simulating the position of the digital exhaust area measuring tool in working. Two fixed measuring heads of width of the digital exhaust area measuring tool need to be in contact with the back side surface of the adjacent blade on the basin side of the blade to be measured, and the back side simulation surface is used for simulating the back side surface of the adjacent blade on the basin side of the blade to be measured. Meanwhile, two basin side blade simulation blocks are arranged and used for matching two measuring points specified by a design drawing.

Furthermore, the large flange plate simulation block is provided with a large flange plate channel simulation surface towards one side of the middle part of the base, and the small flange plate simulation block is provided with a small flange plate channel simulation surface towards one side of the middle part of the base.

When the digital exhaust area measuring tool is used for measuring the exhaust area of the exhaust channel at the basin side of the blade to be measured, the length value of the exhaust channel at the back side of the adjacent blade needs to be measured, the large edge plate channel simulation surface and the small edge plate channel simulation surface simulate the large edge plate channel surface and the small edge plate channel surface of the adjacent blade respectively, and therefore the length value of the exhaust channel at the back side of the adjacent blade is obtained by measuring the distance between the large edge plate channel simulation surface and the small edge plate channel simulation surface.

Further, the first positioning assembly comprises a first positioning seat, a first limiting seat and a pressing seat; the first positioning seat is provided with a first supporting surface and an end limiting surface which are perpendicular to each other; the first limiting seat is provided with a large flange plate limiting surface; the compressing base is provided with a top limiting surface.

The first positioning component is used for fixing one end, provided with a large edge plate, of the blade to be measured, the end part limiting surface limits the end part of the blade to be measured, the large edge plate limiting surface is in contact with the large edge plate of the blade to be measured, the circumferential direction of the blade to be measured is limited, the first supporting surface and the top limiting surface respectively limit the bottom and the top of the blade to be measured, and finally the blade to be measured is fixed through the pressing seat, so that the fixing of one end, provided with the large edge plate, of the blade to be measured is achieved.

Furthermore, the second positioning assembly comprises a second positioning seat, a second limiting seat and a pressing seat; the second positioning seat is provided with a second supporting surface; the second limiting seat is provided with a small flange plate limiting surface.

The second positioning assembly is used for fixing one end, provided with the small edge plate, of the blade to be measured, the small edge plate limiting surface is in contact with the small edge plate of the blade to be measured, the circumferential direction of the blade to be measured is limited, the second supporting surface and the top limiting surface on the pressing seat limit the bottom and the top of the blade to be measured respectively, and finally the pressing seat is used for fixing, so that the fixing of one end, provided with the small edge plate, of the blade to be measured is achieved.

Further, the pressing seat comprises a guide rod and a pressing block; one end of the guide rod is connected with the base, the other end of the guide rod penetrates through the pressing block and is provided with a knurled nut, and the guide rod is sleeved with a spring, two ends of the spring are respectively in contact with the base and the pressing block; the top limiting surface is formed on the bottom wall of the pressing block.

The compression block can slide on the guide rod, and when the knurled nut rotates, the top limiting surface can be in close contact with the top of the blade to be tested, so that the blade to be tested is fixed. When the knurled nut is loosened, the spring can bounce the pressing block open, so that the pressing block is separated from the blade to be tested, and the blade to be tested is convenient to replace.

Furthermore, a ball pin is arranged on the base.

The ball pin is used as a reference piece, and the mutual position relation among the simulation blocks is detected, so that the positions of the simulation blocks are accurate.

A method for measuring the exhaust area of the single guide vane based on the measuring device comprises the following steps:

s1: fixing the blade to be measured through a fixing device;

s2: placing the cross positioning surface of the positioning block of the digital exhaust area measuring tool on the exhaust edge of the blade to be measured; the length fixed measuring head is attached to the back side large edge plate channel surface of the blade to be measured, the length movable measuring head is attached to the back side small edge plate channel surface of the blade to be measured, and the length size of the back side exhaust channel is measured; respectively attaching two width fixed measuring heads to the blade back of the blade to be measured, respectively contacting two corresponding width movable measuring heads with a first back-side blade simulation block and a second back-side blade simulation block, and measuring the width sizes of two positions of a back-side exhaust channel;

s3: the digital exhaust area measuring tool calculates the exhaust area value of the back side of the blade to be measured according to the length size of the back side exhaust channel and the width sizes of two positions of the back side exhaust channel;

s4: respectively placing the cross positioning surface of the positioning block of the digital exhaust area measuring tool on the tops of the first basin side blade simulation block and the second basin side blade simulation block; the length fixed measuring head is contacted with the large edge plate simulation block, the length movable measuring head is contacted with the small edge plate simulation block, and the length size of the exhaust channel on the basin side is measured; two width fixed measuring heads are respectively contacted with a first basin side blade simulation block and a second basin side blade simulation block, two corresponding width movable measuring heads are respectively contacted with the exhaust edge of the blade to be measured, and the width sizes of two positions of a basin side exhaust channel are measured;

s5: the digital exhaust area measuring tool calculates the exhaust area value of the basin side of the blade to be measured according to the length size of the basin side exhaust channel and the width sizes of two positions of the basin side exhaust channel;

s6: and adding the exhaust area value of the back side of the blade to be measured and the exhaust area value of the basin side of the blade to be measured and dividing by 2 to obtain a numerical value which is the exhaust area value of the single guide blade.

According to the invention, the positions of the blade to be measured and the adjacent blades on the two sides of the blade to be measured in the guide device casing are simulated, the exhaust area values of the exhaust channel on the back side and the basin side of the blade to be measured can be conveniently and rapidly measured through the digital exhaust area measuring tool, the exhaust area value of a single exhaust blade can be obtained by adding the two exhaust area values and dividing the two exhaust area values by 2, and the problem that the exhaust area value of the single guide blade cannot be measured is solved.

When the blade assembly is required, the exhaust area values of the blades are screened and matched, the blades of which the total exhaust area value is one part are selected from the blades to be assembled, the total exhaust area value meets the requirement of a design drawing, repeated blade replacement and repeated measurement caused by unqualified exhaust area values in the assembly are avoided, the assembly and measurement period is shortened, and the assembly efficiency is improved.

Further, in step S1, the fixing method is: the bottoms of two ends of a blade to be measured are respectively placed on a first supporting surface and a second supporting surface, one end, provided with a large edge plate, of the blade to be measured is in contact with the end limiting surface, the large edge plate and the small edge plate of the blade to be measured are in contact with the large edge plate limiting surface and the small edge plate limiting surface respectively, the tops of the two ends of the blade to be measured are in contact with the top limiting surfaces of the two pressing seats respectively, and knurled nuts are screwed to fix the blade to be measured;

in step S2, the contact pattern of two corresponding width movable measuring heads: two corresponding width movable measuring heads are respectively contacted with the first exhaust edge simulation surfaces of the first back-side blade simulation block and the second back-side blade simulation block;

in step S4, the mounting method of the digital exhaust area measuring device: the cross positioning surface of the positioning block of the digital exhaust area measuring tool is respectively contacted with the third exhaust edge simulation surface and the reference surface on the first basin side blade simulation block and the second basin side blade simulation block; the length fixed measuring head is contacted with a large flange plate channel simulation surface of the large flange plate simulation block, and the length movable measuring head is contacted with a small flange plate channel simulation surface of the small flange plate simulation block; the two width fixed measuring heads are respectively contacted with the back side simulation surfaces of the first basin side blade simulation block and the second basin side blade simulation block.

The invention has the following beneficial effects:

the invention can respectively measure the exhaust areas of the back side and the basin side of the blade to be measured through the digital exhaust area measuring tool, can obtain the exhaust area value of a single blade to be measured, and selects the blades of which the total exhaust area value meets the requirement of a design drawing from the exhaust areas of a plurality of blades through screening and matching, thereby effectively reducing the assembly and measurement times of the guide blades, finally realizing one-time assembly without measuring the exhaust area during assembly, shortening the production period and improving the efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a single guide vane exhaust area measurement device of the present invention;

FIG. 2 is a schematic structural view of a first positioning seat according to the present invention;

FIG. 3 is a schematic structural view of a first position-limiting base according to the present invention;

FIG. 4 is a schematic structural view of a compression seat of the present invention;

FIG. 5 is a schematic structural diagram of a second positioning seat of the present invention;

FIG. 6 is a schematic structural view of a second spacing block according to the present invention;

FIG. 7 is a schematic view of a first back-side blade simulation block of the present invention;

FIG. 8 is a schematic structural diagram of a first basin-side blade simulation block of the present invention;

FIG. 9 is a schematic structural diagram of a large flange simulation block of the present invention;

FIG. 10 is a schematic view of a small flange simulation block according to the present invention;

FIG. 11 is a schematic structural diagram of the measuring device of the present invention when measuring the exhaust area of the blade to be measured.

In the figure: 10-a base; 11-ball stud; 21-a first positioning assembly; 22-a second positioning assembly; 23-a first positioning seat; 24-a first limit seat; 25-a compression seat; 26-a second positioning seat; 27-a second limit seat; 231-a first support surface; 232-end limiting surface; 241-a large flange plate limiting surface; 251-a top limiting surface; 252-a guide bar; 253-a compression block; 254-knurled nut; 255-a spring; 256-support rods; 261-a second support surface; 271-small flange plate limiting surface; 310-a first dorsal blade simulation block; 311-first exhaust edge simulation surface; 320-a second dorsal blade simulator block; 330-a first basin-side blade simulation block; 331-backside simulation surface; 332-third vented edge simulation plane; 333-base level; 340-a second basin-side blade simulation block; 350-large flange plate simulation block; 351-large flange plate channel simulation surface; 360-small flange plate simulation block; 361-small flange plate channel simulation surface; 400-leaf to be tested.

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.