CN201522261U - Error measuring device of throat track area of turbine guide blade - Google Patents

Error measuring device of throat track area of turbine guide blade Download PDF

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Publication number
CN201522261U
CN201522261U CN2009200344992U CN200920034499U CN201522261U CN 201522261 U CN201522261 U CN 201522261U CN 2009200344992 U CN2009200344992 U CN 2009200344992U CN 200920034499 U CN200920034499 U CN 200920034499U CN 201522261 U CN201522261 U CN 201522261U
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China
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supporting base
width
turborotor
swingle
height
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Expired - Fee Related
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CN2009200344992U
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Chinese (zh)
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叶永
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Individual
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Individual
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Abstract

The utility model discloses an error measuring device of the throat track area of a turbine guide blade, which relates to the filed of axial flow gas turbine engine manufacture. The error measuring device mainly comprises a base plate, wherein a rectangular hole is arranged in the center of the base plate, three width measuring rotating rods, one height measuring rotating rod, three width positioning plates and three height positioning rods are arranged on the base plate, and the three width positioning plates correspond to the height positioning rods.

Description

A kind of error measuring means of turborotor throat area
Technical field
The utility model relates to the axial flow type gas turbine engine and makes field, particularly a kind of error measuring means of turborotor throat area.
Background technology
For the axial flow type gas turbine engine, the throat area of turbine one-level guide vane is the important parameter that influences engine performance, and it is the smallest passage that air communication is crossed engine, has limited the minimum gas flow of the engine core machine of flowing through.If the throat area off-design value of turbine one-level guide vane will influence the die swell ratio of turbine, also can influence its Performance Match for the high and low pressure turbine, and then influence efficient, turbine inlet temperature and the fuel consumption of turbine.
Because the smart casting of blade technology limitation, the casting dimensional discrepancy of vane foil is difficult to avoid.Even individual blade satisfies design tolerance, for the turbine one-level guide vane of whole level, approximately quantity is 60-100 sheet blade, and the cumulative errors of its throat area influences the performance of whole engine then with the substantial deviation design load.
At present, the common method of head it off is to adopt total throat area of the turbine one-level guide vane of measuring whole engine, changes respective vanes then to reach total throat area required value.Therefore, measure the total throat area of whole level of turbine one-level guide vane accurately and fast, become the key of dealing with problems.Generally adopting water flow test method or simple frock to carry out throat area in the industry measures.Simple frock measuring accuracy and measuring speed all do not satisfy the production needs, and the water flow test method is by the convert throat area of wheel guide vane of the time of measuring water in the water tank and flowing through the venturi of turborotor, need to consume substantial contribution and time, efficiency of measurement is low.
Summary of the invention
The purpose of this utility model is a kind of error measuring means of turborotor throat area, and the throat area of measurement axis streaming gas-turbine unit turbine guide vane accurately and fast is to satisfy production, maintenance and scientific research needs.
In order to achieve the above object, the utility model is achieved by the following technical solutions.
A kind of error measuring means of turborotor throat area, it is characterized in that, comprise that the center is the substrate of rectangle hole, in front that upper surface of base plate is positioned at the rectangle hole before be respectively arranged with left supporting base, preceding right supporting base, the back edge that is positioned at the rectangle hole is respectively arranged with the left supporting base in back, the right supporting base in back, and the right that is positioned at the rectangle hole is along being provided with right supporting base; Preceding left supporting base is provided with first stationary shaft that stretches to the substrate rear, axially is disposed with three width measure swingles along first stationary shaft; Left supporting base before the left supporting base in back is higher than, and the top of the left supporting base in back is fixed with the crossbeam that stretches to substrate the place ahead, be disposed with three width bits displacement sensors on the crossbeam, be provided with first back-moving spring between the upper end of each width measure swingle and the crossbeam, its lower end is pressed on the blade back of turborotor, and the sensing head of width bits displacement sensor vertically is pressed on the upper semisection of corresponding width measure swingle; Along being provided with web joint, web joint is provided with three width location-plates of corresponding three width measure swingles on the right that base lower surface is positioned at the rectangle hole, and the width location-plate is provided with the locating notch on the exhaust limit that is used to be stuck in turborotor; Right supporting base is provided with second stationary shaft that stretches to the substrate left, and second stationary shaft is provided with highly measures swingle; Preceding right supporting base is provided with the height displacement sensor, highly measure the upper end of swingle and afterwards be provided with second back-moving spring between the right supporting base, the sensing head of height displacement sensor vertically is pressed on the upper semisection of highly measuring swingle, the lower end of highly measuring swingle is pressed on the outside surface of the inner platform of turborotor, the right supporting base in back is provided with the height positioning rod that stretches into rectangle hole below, and height positioning rod is pressed on the inside surface of the curtain plate of turborotor.
Further characteristics of the present utility model exist, also comprise an A/D converter that connects three width bits displacement sensors and height displacement sensor respectively, the computing machine that connects A/D converter, the measurement data that described computing machine is gathered three width bits displacement sensors and height displacement sensor by A/D converter is calculated turborotor throat area or area error.
The simple relatively frock of the utility model has strict width, height location structure, and measurement is quick and precision is high; The relative water flow test method of the utility model, equipment is simple, and it is convenient to measure, and does not need by measuring the convert throat area of wheel guide vane of time that water in the water tank flows through the venturi of turborotor.In sum, the utility model is the throat area of measurement axis streaming gas-turbine unit turbine guide vane accurately and fast, satisfies production, maintenance and scientific research needs easily.
Description of drawings
Fig. 1 is the structural representation of the error measuring means of a kind of turborotor throat area of the present utility model;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is the connection diagram of data processing unit;
Fig. 4 is the structural representation of width measure unit among Fig. 1;
Fig. 5 is the schematic top plan view of Fig. 4;
Fig. 6 is the structural representation of height measure portion among Fig. 2;
Fig. 7 looks synoptic diagram for the left side of Fig. 6;
Fig. 8 is the space structure figure of turborotor venturi;
Fig. 9 is the instrumentation plan of width error;
Figure 10 is the instrumentation plan of height error;
Among the figure: 1, substrate; 2, preceding left supporting base; 3, preceding right supporting base; 4, the left supporting base in back; 5, the right supporting base in back; 6, right supporting base; 7, first stationary shaft; 8, width measure swingle; 9, crossbeam; 10, width bits displacement sensor; 11, first back-moving spring; 12, first web joint; 13, width location-plate; 14, second stationary shaft; 15, highly measure swingle; 16, second back-moving spring; 17, height displacement sensor; 18, second web joint; 19, height positioning rod; 20, inner platform; 21, curtain plate; 22, blade exhaust limit; 23, blade leading edge; 24, blade profile profile control line.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
With reference to Fig. 1, Fig. 2, Fig. 3, be a kind of error measuring means of turborotor throat area.It comprises that the center is the substrate 1 of rectangle hole, the front that is positioned at the rectangle hole at substrate 1 upper surface is along the preceding left supporting base 2, the preceding right supporting base 3 that pass through screw retention respectively, the back edge that is positioned at the rectangle hole is respectively by the back left supporting base 4 of screw retention, and the right that is positioned at the rectangle hole is along the right supporting base 6 by screw retention.
Preceding left supporting base 2 is provided with first stationary shaft 7 that stretches to substrate 1 rear, axially is disposed with three width measure swingles 8 along first stationary shaft 7.Left supporting base 2 before the left supporting base 3 in back is higher than, and be fixed with the crossbeam 9 that stretches to substrate 1 the place ahead at left supporting base 3 tops, back, be disposed with three width bits displacement sensors 10 on the crossbeam 9, width bits displacement sensor 10 is the inductance type displacement sensor, being provided with first back-moving spring, 11, the first back-moving springs between the upper end of each width measure swingle 8 and the crossbeam 9 is volute spring; During measurement, the sensing head of width bits displacement sensor 10 vertically is pressed on the upper semisection of corresponding width measure swingle 8, and each width measure swingle 8 lower end is pressed on the blade back of turborotor.
A/D converter and computing machine constitute data processing unit.The A/D converter that three width bits displacement sensors and a height displacement sensor are connected respectively, A/D converter is connected to computing machine, the measurement data that computing machine is gathered three width bits displacement sensors and height displacement sensor by A/D converter can be calculated turborotor throat area or area error.
With reference to Fig. 4, Fig. 5, the right that is positioned at the rectangle hole at substrate 1 lower surface is fixed with first web joint 12 along fore-and-aft direction, the left and right directions of first web joint, 12 lower surfaces offers three road chutes, three road chute internal fixation have 13, three width location-plates of three width location-plates, 13 corresponding three width measure swingles 8.Width location-plate 13 is used to be stuck in the locating notch on the exhaust limit of turborotor when being provided with and measuring.
With reference to Fig. 6, Fig. 7, right supporting base 6 is provided with second stationary shaft 14 that stretches to substrate 1 left, second stationary shaft 14 is provided with a height and measures swingle 15, highly measuring the upper end of swingle 15 and afterwards being provided with second back-moving spring, 16, the second back-moving springs 16 between the right supporting base 5 is volute spring.Preceding right supporting base 5 is provided with height displacement sensor 17, and the sensing head of height displacement sensor 17 vertically is pressed on the upper semisection of highly measuring swingle 15; During measurement, the lower end of highly measuring swingle 15 is pressed on the outside surface of the inner platform of turborotor.Be fixed with second web joint, 18, the second web joints 18 that stretch to substrate 1 the place ahead on the right supporting base 5 in back and be provided with the height positioning rod 19 that stretches into rectangle hole below, height positioning rod 19 is pressed on the inside surface of the curtain plate of turborotor during measurement.
Below in conjunction with accompanying drawing measuring principle of the present utility model is described in further details.
With reference to Fig. 8, the area that heavy black line is surrounded is the venturi between left side blade and the intermediate blade, and AA ', BB ', three lines of CC ' are the line between 22 centers of circle, exhaust limit and blade venturi reference mark, the left side on the blade profile profile control line 24.HH ' is the line between inside and outside listrium 21, the 20 venturi reference mark.Then the length of AA ', BB ', three line segments of CC ' is one group of width value of venturi, and the length of HH ' line segment is the height value of venturi.
The utility model adopts the measurement of comparison method to measure the throat area of guide vane.
At first,, determine each position, reference mark of throat area correspondence according to Design Theory, production standard guide vane group, one group of corresponding width value is [A 0A 0', B 0B 0', C 0C 0'] and height value H 0H 0', also promptly designing width value and design height value, calculating can design throat area value S 0And utilize the error measuring means of this example and standard guide vane group to mark, write down three width bits displacement sensors and a height displacement sensor output value is reference 0 value.
Secondly, measure width error.With reference to Fig. 9, with three locating notch A on the width location-plate 13 1', B 1', C 1' being close to the exhaust limit of intermediate blade, error measuring means rotates along blade back, then three contact A of the close left side blade blade back of three width measure swingle 8 lower ends 1, B 1, C 1Blade back along left side blade slides, and finds out the peak of blade back, and one group of numerical value of its correspondence is one group of width error value [X, Y, Z] of actual venturi.
The 3rd, the measuring height error.With reference to Figure 10, similar with the measuring method of width error.With three locating notch A on the width location-plate 13 1', B 1', C 1' be close to the exhaust limit of intermediate blade, the contact H of height positioning rod 19 lower ends of error measuring means 1' H ' that is close on the blade curtain plate locates (in conjunction with Fig. 8), error measuring means rotates along blade back, when finding out the peak of blade back, highly measures swingle 15 lower ends near blade inner platform contact H 1Inner platform along blade slides, and draws blade inner platform corresponding point, the height error value T that its corresponding height value is actual venturi.
At last, calculate throat area.The design width value of venturi is [A 0A 0', B 0B 0', C 0C 0'], the design height value is H 0H 0'; Then have
The correction of venturi width A = 1 3 H 0 H 0 ′ × ( X + Y + Z )
The correction of venturi height B = ( A 0 A 0 ′ + B 0 B 0 ′ + C 0 C 0 ′ ) 3 × T
The throat area S=S of the blade of surveying 0+ (A+B) (algebraic sum)
Thereby, according to same quadrat method, just can be easy to calculate total throat area of all guide vanes that obtain turbine, be used for quality improvement and the control instructing design or produce.
Although below in conjunction with the accompanying drawings embodiment of the present utility model is described, utility model is not limited to above-mentioned specific embodiments, and above-mentioned specific embodiments only is schematic, guiding, rather than restrictive.Those of ordinary skill in the art under the situation that does not break away from the scope that the utility model claim protected, can also make a variety of forms under the enlightenment of this instructions, these all belong to the row of the utility model protection.

Claims (2)

1. the error measuring means of a turborotor throat area, it is characterized in that, comprise that the center is the substrate of rectangle hole, in front that upper surface of base plate is positioned at the rectangle hole before be respectively arranged with left supporting base, preceding right supporting base, the back edge that is positioned at the rectangle hole is respectively arranged with the left supporting base in back, the right supporting base in back, and the right that is positioned at the rectangle hole is along being provided with right supporting base; Preceding left supporting base is provided with first stationary shaft that stretches to the substrate rear, axially is disposed with three width measure swingles along first stationary shaft; Left supporting base before the left supporting base in back is higher than, and the top of the left supporting base in back is fixed with the crossbeam that stretches to substrate the place ahead, be disposed with three width bits displacement sensors on the crossbeam, be provided with first back-moving spring between the upper end of each width measure swingle and the crossbeam, its lower end is pressed on the blade back of turborotor, and the sensing head of width bits displacement sensor vertically is pressed on the upper semisection of corresponding width measure swingle; Along being provided with web joint, web joint is provided with three width location-plates of corresponding three width measure swingles on the right that base lower surface is positioned at the rectangle hole, and the width location-plate is provided with the locating notch on the exhaust limit that is used to be stuck in turborotor; Right supporting base is provided with second stationary shaft that stretches to the substrate left, and second stationary shaft is provided with highly measures swingle; Preceding right supporting base is provided with the height displacement sensor, highly measure the upper end of swingle and afterwards be provided with second back-moving spring between the right supporting base, the sensing head of height displacement sensor vertically is pressed on the upper semisection of highly measuring swingle, the lower end of highly measuring swingle is pressed on the outside surface of the inner platform of turborotor, the right supporting base in back is provided with the height positioning rod that stretches into rectangle hole below, and height positioning rod is pressed on the inside surface of the curtain plate of turborotor.
2. the error measuring means of a kind of turborotor throat area according to claim 1 is characterized in that, also comprises an A/D converter that connects three width bits displacement sensors and height displacement sensor respectively, connects the computing machine of A/D converter; The measurement data that described computing machine is gathered three width bits displacement sensors and height displacement sensor by A/D converter is calculated turborotor throat area or area error.
CN2009200344992U 2009-09-11 2009-09-11 Error measuring device of throat track area of turbine guide blade Expired - Fee Related CN201522261U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200344992U CN201522261U (en) 2009-09-11 2009-09-11 Error measuring device of throat track area of turbine guide blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200344992U CN201522261U (en) 2009-09-11 2009-09-11 Error measuring device of throat track area of turbine guide blade

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CN201522261U true CN201522261U (en) 2010-07-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103438793A (en) * 2013-06-09 2013-12-11 西安航空动力股份有限公司 Device for measuring throat area of guider of aero-engine
CN108132038A (en) * 2017-12-08 2018-06-08 中国航发动力股份有限公司 A kind of device and method for measuring turborotor venturi minimum area

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103438793A (en) * 2013-06-09 2013-12-11 西安航空动力股份有限公司 Device for measuring throat area of guider of aero-engine
CN103438793B (en) * 2013-06-09 2016-02-03 西安航空动力股份有限公司 A kind of device measuring throat area of guider of aero-engine
CN108132038A (en) * 2017-12-08 2018-06-08 中国航发动力股份有限公司 A kind of device and method for measuring turborotor venturi minimum area
CN108132038B (en) * 2017-12-08 2019-11-12 中国航发动力股份有限公司 A kind of device and method measuring turborotor venturi minimum area

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100707

Termination date: 20100911