CN105043335A - Turbine guider channel area measuring instrument - Google Patents
Turbine guider channel area measuring instrument Download PDFInfo
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- CN105043335A CN105043335A CN201510572518.7A CN201510572518A CN105043335A CN 105043335 A CN105043335 A CN 105043335A CN 201510572518 A CN201510572518 A CN 201510572518A CN 105043335 A CN105043335 A CN 105043335A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/28—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring areas
Abstract
The invention relates to a turbine guider channel area measuring instrument. The turbine guider channel area measuring instrument comprises measuring units; the measuring unit includes a measuring portion, a displacement sensor and a pressing portion, wherein the displacement sensor is arranged above the tail end of the measuring portion, the pressing portion is arranged below the tail end of the measuring portion, the pressing portion drives the measuring portion to move, and the measuring portion drives the displacement sensor to move. According to the turbine guider channel area measuring instrument of the invention, the lengths of four corresponding sides of each channel are measured, and the lengths are introduced into an area computational formula; area computation can be carried out based on single-chip microcomputer programming, so that the cross-sectional area of each channel can be computed; and the cross-sectional areas of all the channels are added together, and the sum of the cross-sectional areas of all the channels is the total area of the channel of a turbine guider.
Description
Technical field
The invention belongs to surveying instrument field, relate to a kind of nozzle ring aisle spare measuring instrument.
Background technology
Aero-turbine guides channel cross-sectional area is directly related with aeromotor air mass flow, significant impact is there is in air mass flow to aero-engine performance, in channel cross-sectional area known is at present measured, the fluid flow test of multigauge constant-pressure replaces, think that fluid flow is air mass flow, general discharge replaces air mass flow, but aqueous medium and air dielectric density, resistance difference are comparatively large, and discharge is not equal to air mass flow; Or fill in channel cross-section with clearance gauge, clearance gauge by, then think that nozzle ring channel cross-section can meet request for utilization, but comparatively coarse with clearance gauge inspection, measuring accuracy is not high, can only draw a probable ranges.Above two kinds of modes all can not the sectional area of Measurement accuracy aero-turbine guides passage, for the debugging in aeromotor later stage, testing bring harmful effect.A kind of device measuring throat area of guider of aero-engine is disclosed in Chinese patent CN103438793, but this device is complicated, complex operation, use, manufacturing cost is higher, and its finally draw for measured distance value instead of area value, show that area value also needs to carry out postorder calculating.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of nozzle ring aisle spare measuring instrument, this measuring instrument uses, manufacturing cost is lower.
The invention provides following technical scheme:
A kind of nozzle ring aisle spare measuring instrument, comprise measuring unit, described measuring unit comprises measurement section, displacement transducer and press section, institute's displacement sensors is set above described measurement section end, below described measurement section end, described press section is set, described press section drives described measurement section to move, and described measurement section drives institute's displacement sensors motion.
, described measurement section is clip structure in such scheme preferably, comprises active side and fixation side.
In above-mentioned either a program preferably, above the end of described active side, institute's displacement sensors is set.
In above-mentioned either a program preferably, between described active side and fixation side, torsion spring is set.
In above-mentioned either a program preferably, the side driving lever of described torsion spring withstands described active side, and opposite side driving lever withstands described fixation side.
In above-mentioned either a program preferably, described fixation side is two-stage staircase structural model, and described torsion spring is arranged on the corner of described two-stage staircase structural model.
In above-mentioned either a program preferably, described measurement section active side is lever, and it is hinged that the middle part of described lever and measurement section fixed mount pass through rotating shaft.
In above-mentioned either a program preferably, described measurement section fixed mount is arranged on the side of described measurement section, and described torsion spring is arranged on described measurement section fixed mount by straight pin.
In above-mentioned either a program preferably, the front end of described active side is provided with down-turned portion, and the front end of described fixation side is provided with the gradient of corresponding described bend.
In above-mentioned either a program preferably, the front end of described active side is the gauge head that floats, and the front end of described fixation side is fixing gauge head.
In above-mentioned either a program preferably, during measurement, described floating gauge head present position is the measurement point that floats, and described fixing gauge head present position is and fixed measuring point.
In above-mentioned either a program preferably, described measurement section fixation side, described measurement section fixed mount are all fixed with the base of measuring instrument.
In above-mentioned either a program preferably, institute's displacement sensors comprises mounting frame for sensor and displacement sensor bar.
In above-mentioned either a program preferably, described displacement sensor bar is arranged on the top of described measurement section active side end by described mounting frame for sensor.
In above-mentioned either a program preferably, during measurement, described measurement section active side end is by described displacement sensor bar upwards jack-up.
In above-mentioned either a program preferably, institute's displacement sensors is spring displacement transducer.The institute's displacement sensors used in the present invention is spring displacement transducer
In above-mentioned either a program preferably, described displacement sensor bar is displacement transducer gauge head near one end of described measurement section active side end.
In above-mentioned either a program preferably, described press section comprises push rod, handle and top.
In above-mentioned either a program preferably, described push rod comprises jacking part and pressing down section, and in angle between described jacking part and described pressing down section, junction and the described handle of described jacking part and described pressing down section are hinged.
In above-mentioned either a program preferably, the below of described push rod pressing down section is positioned at described handle.
In above-mentioned either a program preferably, in described push rod jacking part, pressure spring is set above handle place.When described pressure spring can be guaranteed to measure beginning, the end of described measurement section can enter measuring position, and push rod is not to the effect of described measurement section active side afterwards, makes measurement section active side be in free state.
In above-mentioned either a program preferably, described pressure spring is arranged on the support fixing with the base of described measuring instrument.
In above-mentioned either a program preferably, top is set in the end of described push rod jacking part.
In above-mentioned either a program preferably, during measurement, described top is by the end upwards jack-up of described measurement section active side.
In above-mentioned either a program preferably, described top, described measurement section active side end and institute's displacement sensors gauge head are positioned on same vertical direction.
In above-mentioned either a program preferably, described handle is fixedly connected with described base.
In above-mentioned either a program preferably, described measuring instrument comprises three described measuring units, three described measuring units be arranged in parallel, the described measurement section fixation side of measuring unit described in each is fixed together, at a certain arranged outside limited block of three described measuring units, the described fixation side that described limited block is adjacent is fixed.
In above-mentioned either a program preferably, the described fixing gauge head of three described fixation side is fixed together by a crossbeam, and described limited block is fixed on one end of described crossbeam.
In above-mentioned either a program preferably, described three measuring units share a pressing down section, and the described jacking part of described three measuring units is all fixed together, and produce motion by a described pressing down section and a described handle.
In above-mentioned either a program preferably, described measuring instrument also comprises the 4th measuring unit, described 4th measuring unit comprises the 4th lever and the 4th displacement transducer, described 4th lever is arranged on the outside of the measurement section fixation side away from described limited block, and it is hinged with the base of described measuring instrument, between the measurement section fixation side that described 4th lever is adjacent, the 4th torsion spring is set, 4th displacement transducer is arranged along the direction perpendicular to described three measurement section fixation side and three institute's displacement sensors, the end of described 4th lever is corresponding with the displacement transducer gauge head of described 4th displacement transducer.
In above-mentioned either a program preferably, the side driving lever of described 4th torsion spring withstands described 4th lever, and opposite side driving lever withstands the measurement section fixation side adjacent with described 4th lever.
In above-mentioned either a program preferably, the end of described 4th lever drives the displacement transducer gauge head motion of described 4th displacement transducer.
In above-mentioned either a program preferably, described measuring instrument also comprises electric part.
In above-mentioned either a program preferably, described electric part comprises acquisition module, controller and display.
In above-mentioned either a program preferably, institute's displacement sensors is connected with described controller.
In above-mentioned either a program preferably, the range of institute's displacement sensors is 0-10mm.
In above-mentioned either a program preferably, described controller adopts ICP-DAS to be with the embedded controller of wince system, and band expansion end.
In above-mentioned either a program preferably, acquisition module is provided with between institute's displacement sensors and described controller.
In above-mentioned either a program preferably, described acquisition module connects described four displacement transducers.
In above-mentioned either a program preferably, described acquisition module adopts ICP-DAS current module.
In above-mentioned either a program preferably, described controller is connected with described display.
In above-mentioned either a program preferably, described display is touch-screen, adopts 5 cun of technical grades, IP65 degree of protection.
In above-mentioned either a program preferably, described controller is connected with power supply.
In above-mentioned either a program preferably, described electric part adopts evc development environment, according to vane type developing application.
In above-mentioned either a program preferably, the outer setting waterproof box body of described electric part.
In above-mentioned either a program preferably, the interface of described each element all employing 4 core aviation sockets.
In above-mentioned either a program preferably, described each element transmits sensor current signal by signal wire.
In above-mentioned either a program preferably, described electric current is 4 ~ 20mA.
The present invention also provides a kind of method calculating nozzle ring cross sectional area, and wherein nozzle ring single cross sectional area computing formula is as follows:
Si=h×[（A1+A2+A3）/3+（A3-A1）（2×h1+2×h2-h）]/(4×h2)]；
Nozzle ring cross sectional area is:
S＝Ci×Si
Wherein: Si is current channel area of section, Ci is current Measurement channel number, S be area and;
With blade exhaust limit for locating surface, set three measurement points B1, B2, B3, with blade exhaust limit for benchmark, described three somes B1, B2, B3 are followed successively by h1, h1+h2, h1+h2+h2 apart from the distance on exhaust limit, the nozzle ring channel cross-section width of described three somes B1, B2, B3 is respectively A1, A2, A3, h is nozzle ring channel cross-section total length, survey size h, A1, A2, A3 must on same level cross sections.
In above-mentioned either a program preferably, above-mentioned measuring instrument is used to measure, the measurement section corresponding measurement point B1 respectively of wherein said three measuring units, B2, B3, all described fixing gauge heads are all fitted with fixed measuring point, all described floating gauge heads are all fitted with floating measurement point, between fixed measuring point with floating measurement point two measurement point, spacing is delivered to described three parallel displacement transducers and is surveyed A1, A2, A3, the distance of the end measurement of the measurement section fixation side that described 4th lever is adjacent is delivered to described 4th displacement transducer and is surveyed h value,
Wherein, during measurement, described limited block and blade are vented limit and contact,
In three parallel measurement section, the distance between adjacent two fixation side is equal,
H1 and h2 is setting value, and A1, A2, A3 are measured by three parallel institute displacement sensors respectively, and h is drawn by described 4th displacement transducer,
H1, h2, h, A1, A2, A3 are substituted into Si=h × [(A1+A2+A3)/3+(A3-A1) (2 × h1+2 × h2-h)]/(4 × h2)], obtain the single cross sectional area of nozzle ring.
In above-mentioned either a program preferably, after data measured, described measuring instrument utilizes mcu programming to carry out areal calculation, and measuring distance value is directly calculated as required area value.
The present invention, by measuring three corresponding width and the cross-sectional length of single channel cross-section, draws its cross sectional area according to existing computing formula.All single cross sectional area are added, itself and be the total area of channel cross-section.I.e. nozzle ring cross sectional area.The accurate positioning of this kind of measurement mechanism course of work, measurement result is reliable and stable, and repeatable accuracy is high, once can measure multiple cross-sectional width and cross-sectional length size simultaneously, thus improvement of production process, raise labour efficiency.
The measuring accuracy of nozzle ring aisle spare measuring instrument of the present invention comparatively clearance gauge inspection greatly improves, and can read accurate measuring distance value.Utilize mcu programming to carry out areal calculation, measuring distance value is directly calculated as required area value.Reduce subsequent operation program, alleviate operator's labour intensity.Measuring method of the present invention, computing method are simple, practical, and at the bottom of device fabrication cost, volume is little, is easy to carry.Reduce use, manufacturing cost, alleviate operator's labour intensity simultaneously, enhance productivity, be convenient to be widely used in production scene.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preferred embodiment according to nozzle ring aisle spare measuring instrument of the present invention;
Fig. 2 is the connection diagram of the electric part of a kind of nozzle ring aisle spare of the present invention measuring instrument;
Three measurement points that Fig. 3 chooses when being the nozzle ring aisle spare measuring instrument measurement of Fig. 1 form the schematic diagram of right-angled trapezium;
The schematic diagram of three measurement points that Fig. 4 chooses when being the nozzle ring aisle spare measuring instrument measurement of Fig. 1 in passage;
Fig. 5 is the vertical view of Fig. 1;
Fig. 6 is the left view of Fig. 1;
Fig. 7 is described measuring instrument stretches into nozzle ring passage schematic diagram when measuring.
Embodiment
In order to understand technical characteristic of the present invention further, below in conjunction with specific embodiment, the present invention is set forth in detail.Embodiment only has exemplary effect to the present invention, and does not have any restrictive effect, the amendment of any unsubstantiality that those skilled in the art makes on basis of the present invention, all should belong to protection scope of the present invention.
embodiment 1:
As shown in Fig. 1 to 7, a kind of nozzle ring aisle spare measuring instrument, comprise measuring unit, described measuring unit comprises measurement section, displacement transducer and press section, institute's displacement sensors is set above described measurement section end, arrange described press section below described measurement section end, described press section drives described measurement section to move, and described measurement section drives institute's displacement sensors motion (as shown in Figure 1).
Further, described measurement section is clip structure, comprises active side 2 and fixation side 1.
Further, above the end of described active side 2, institute's displacement sensors is set.
Further, between described active side 2 and fixation side 1, torsion spring 3 is set.
Further, the side driving lever of described torsion spring 3 withstands described active side 2, and opposite side driving lever withstands described fixation side 1.
Further, described fixation side 1 is two-stage staircase structural model, and described torsion spring 3 is arranged on the corner of described two-stage staircase structural model.
Further, described measurement section active side 2 is lever, and it is hinged that the middle part of described lever and measurement section fixed mount pass through rotating shaft 4.
Further, described measurement section fixed mount is arranged on the side of described measurement section, and described torsion spring 3 is arranged on described measurement section fixed mount by straight pin.
Further, the front end of described active side 2 is provided with down-turned portion, and the front end of described fixation side 1 is provided with the gradient of corresponding described bend.
Further, the front end of described active side 2 is the gauge head that floats, and the front end of described fixation side 1 is fixing gauge head.
Further, during measurement, described floating gauge head present position is the measurement point that floats, and described fixing gauge head present position is fixed measuring point.
Further, described measurement section fixation side 1, described measurement section fixed mount are all fixed with the base of measuring instrument.
Further, institute's displacement sensors comprises mounting frame for sensor 61 and displacement sensor bar 6.
Further, described displacement sensor bar 6 is arranged on the top of described measurement section active side 2 end by described mounting frame for sensor 61.
Further, during measurement, described measurement section active side 2 end is by described displacement sensor bar 6 upwards jack-up.
Further, institute's displacement sensors is spring displacement transducer.
Further, described displacement sensor bar is displacement transducer gauge head 5 near one end of described measurement section active side 2 end.
Further, described press section comprises push rod 7, handle 8 and top 10.
Further, described push rod 7 comprises jacking part and pressing down section, and in angle between described jacking part and described pressing down section, junction and the described handle 8 of described jacking part and described pressing down section are hinged.
Junction and the described handle 8 of described jacking part and described pressing down section are hinged by rotating shaft 4.
Further, the below of described push rod 7 pressing down section is positioned at described handle 8.
Further, in described push rod 7 jacking part, pressure spring 9 is set above handle 8 place.
Further, described pressure spring 9 is arranged on the support 19 fixing with the base of described measuring instrument.
Further, top 10 is set in the end of described push rod 7 jacking part.
Further, during measurement, described top 10 is by the end upwards jack-up of described measurement section active side 2.
Further, described top 10, described measurement section active side 2 end and institute's displacement sensors gauge head 5 are positioned on same vertical direction.
Further, described handle 8 is fixedly connected with described base.
Further, described measuring instrument comprises three described measuring units, three described measuring units be arranged in parallel, the described measurement section fixation side of measuring unit described in each is fixed together, at a certain arranged outside limited block 11 of three described measuring units, the described fixation side that described limited block 11 is adjacent is fixed.
Further, the described fixing gauge head of three described fixation side is fixed together by a crossbeam 12, and described limited block 11 is fixed on one end of described crossbeam 12.
Further, described three measuring units share a pressing down section, and the described jacking part of described three measuring units is all fixed together, and produce motion by a described pressing down section and a described handle 8.
Further, described measuring instrument also comprises the 4th measuring unit, described 4th measuring unit comprises the 4th lever 13 and the 4th displacement transducer 14, described 4th lever 13 is arranged on the outside of the measurement section fixation side away from described limited block, and it is hinged with the base of described measuring instrument, between the measurement section fixation side that described 4th lever 13 is adjacent, the 4th torsion spring 15 is set, 4th displacement transducer 14 is arranged along the direction perpendicular to described three measurement section fixation side and three institute's displacement sensors, the end of described 4th lever 13 is corresponding with the displacement transducer gauge head of described 4th displacement transducer.
Further, described 4th lever 13 is hinged by rotating shaft 4 with the base of described measuring instrument,
Further, the side driving lever of described 4th torsion spring 15 withstands described 4th lever 13, and opposite side driving lever withstands the measurement section fixation side adjacent with described 4th lever.
Further, the end of described 4th lever 13 drives the displacement transducer gauge head motion of described 4th displacement transducer.
Further, described measuring instrument also comprises electric part.
Further, described electric part comprises acquisition module, controller and display (as shown in Figure 2).
Further, institute's displacement sensors is connected with described controller.
Further, the range of institute's displacement sensors is 0-10mm.
Further, described controller adopts ICP-DAS to be with the embedded controller of wince system, and band expansion end.
Further, acquisition module is provided with between institute's displacement sensors and described controller.
Further, described acquisition module connects described four displacement transducers.
Further, described acquisition module adopts ICP-DAS current module.
Further, described controller is connected with described display.
Further, described display is touch-screen, adopts 5 cun of technical grades, IP65 degree of protection.
Further, described controller is connected with power supply.
Further, described electric part adopts evc development environment, according to vane type developing application.
Further, the outer setting waterproof box body of described electric part.
Further, the interface of described each element all employing 4 core aviation sockets.
Further, described each element transmits sensor current signal by signal wire.
Further, described electric current is 4 ~ 20mA.
Be that the front end of fixation side 1 is for fixing gauge head in the measuring instrument of the present embodiment, fixing gauge head present position is fixed measuring point, fit with fixed measuring point, the front end of active side 2 is the gauge head that floats, float gauge head present position for the measurement point that floats, fit with floating measurement point, between fixed measuring point and floating measurement point two measurement point, spacing is surveyed A1, A2, A3, h value, the effect of torsion spring 3 is in use, with elastic force up head part lever, lever 12 is 4 hinge through around the shaft, thus make floating gauge head automatically up, withstand measured point, torsion spring 3 is in open configuration always, thus ensure that test value is constant.Meanwhile, the lever other end upwarps, and makes displacement transducer gauge head 5 up, thus displacement sensor bar 6 is moved upward, and its relative motion amount is lever 12 around the shaft after 4 hinge through, the measured value be exaggerated.The effect of push rod 7 presses down in use, push rod 7 hinge through, upwards lever is pushed up by coming directly towards 10, lever is 4 hinge through around the shaft, thus shrink spacing between gauge head and fixing gauge head two measurement point of floating, use it can put into position to be measured flexibly, unclamp push rod 7 subsequently, make torsion spring 3 be in nature open configuration.
Embodiment 2: a kind of nozzle ring cross sectional area computing method
Nozzle ring single cross sectional area computing formula is as follows:
Si=h×[（A1+A2+A3）/3+（A3-A1）（2×h1+2×h2-h）]/(4×h2)]；
Nozzle ring cross sectional area is:
S＝Ci×Si
Wherein: Si is current channel area of section, Ci is current Measurement channel number, S be area and;
With blade exhaust limit for locating surface, set three measurement points B1, B2, B3, with blade exhaust limit for benchmark, described three somes B1, B2, B3 are followed successively by h1, h1+h2, h1+h2+h2(as shown in Figure 4 apart from the distance on exhaust limit), the nozzle ring channel cross-section width of described three somes B1, B2, B3 is respectively A1, A2, A3, h is nozzle ring channel cross-section total length, survey size h, A1, A2, A3 must on same level cross sections (as shown in Figure 3).
Described three somes B1, B2, B3 are apart from the distance on exhaust limit, and for B1 point, with the air line distance of B1 and exhaust limit contact point for hypotenuse form right angle triangle, the right angle length of side of hypotenuse clockwise adjacent is the distance h1 of B1 apart from exhaust limit, and B2, B3 are in like manner.
Embodiment 3: a kind of nozzle ring cross sectional area computing method
Difference from Example 2 is only: use the measuring instrument of above-mentioned any embodiment to measure, the measurement section corresponding measurement point B1 respectively of wherein said three measuring units, B2, B3, all described fixing gauge heads are all fitted with fixed measuring point, all described floating gauge heads are all fitted with floating measurement point, between fixed measuring point with floating measurement point two measurement point, spacing is delivered to described three parallel displacement transducers and is surveyed A1, A2, A3, the distance of the end measurement of the measurement section fixation side that described 4th lever is adjacent is delivered to described 4th displacement transducer and is surveyed h value,
Wherein, during measurement, described limited block and blade are vented limit and contact,
In three parallel measurement section, the distance between adjacent two fixation side is equal,
H1 and h2 is setting value, and A1, A2, A3 are measured by three parallel institute displacement sensors respectively, and h is drawn by described 4th displacement transducer,
H1, h2, h, A1, A2, A3 are substituted into Si=h × [(A1+A2+A3)/3+(A3-A1) (2 × h1+2 × h2-h)]/(4 × h2)], obtain the single cross sectional area of nozzle ring.
Embodiment 4: a kind of nozzle ring cross sectional area computing method
Difference from Example 3 is only: after data measured, and described measuring instrument utilizes mcu programming to carry out areal calculation, and measuring distance value is directly calculated as required area value.
Before using the measuring instrument of embodiment 1 to measure, first his-and-hers watches part is used, hold handle 8, pressure push rod 7, under the effect of rotating shaft 4, floating gauge head is 4 rotations around the shaft, and spacing reduces between fixing gauge head, probe part is stretched into and treats his-and-hers watches part (A face is confined planes), subsequently, unclamp push rod 7, probe part opens by torsion spring 3, two gauge heads are fitted (as shown in Figure 1 with his-and-hers watches part two ends measurement point respectively, because floating, the original position gap of gauge head when the position of measurement point and Fixture Design is very little, the angle formed is also very little, the impact that its tan value is produced is less, therefore when calculating, ignore its impact, the gauge head amount of movement that directly will float calculates by rectilinear motion).Displacement sensor bar 6 upwards pushes up by displacement transducer gauge head 5(, now, presses button on measuring instrument panel, confirms as to preset to measure initial value.Subsequently, pressure part push rod 7, measuring instrument is taken out from his-and-hers watches part, by above-mentioned measuring process, measuring instrument gauge head end is inserted channel cross-section place to be measured, two gauge heads are fitted with channel cross-section place to be measured two ends measurement point respectively, the spacing between measurement point and fixed measuring point of floating is surveyed A1/A2/A3/h value, measuring instrument panel shows this Measurement channel area of section of Si(), this Measurement channel number of h, h1, h2, A1, A2, A3, Ci() and total area S; And press button on panel and confirm this measurement result, this measurement result is this single cross sectional area Si.After measurement completes, pressure part 7(push rod), take out test fixture, unclamp push rod 7, torsion spring 3 and pressure spring 9 make test fixture reset.Measure the sectional area of next passage again by said process, after having measured at every turn, press button on panel and confirm that measuring instrument shows h, h1, h2, A1, A2, A3, Si, Ci and total area S when time measurement result simultaneously; After having been measured one by one by all for nozzle ring passages, this time surveying work completes.Now, S value panel shown is nozzle ring cross sectional area summation.
Claims (10)
1. a nozzle ring aisle spare measuring instrument, comprise measuring unit, it is characterized in that: described measuring unit comprises measurement section, displacement transducer and press section, institute's displacement sensors is set above described measurement section end, below described measurement section end, described press section is set, described press section drives described measurement section to move, and described measurement section drives institute's displacement sensors motion.
2. nozzle ring aisle spare measuring instrument according to claim 1, is characterized in that: described measurement section is clip structure, comprises active side and fixation side.
3. nozzle ring aisle spare measuring instrument according to claim 2, is characterized in that: arrange institute's displacement sensors above the end of described active side.
4. nozzle ring aisle spare measuring instrument according to claim 3, is characterized in that: arrange torsion spring between described active side and fixation side.
5. nozzle ring aisle spare measuring instrument according to claim 4, is characterized in that: the side driving lever of described torsion spring withstands described active side, and opposite side driving lever withstands described fixation side.
6. nozzle ring aisle spare measuring instrument according to claim 5, it is characterized in that: described fixation side is two-stage staircase structural model, described torsion spring is arranged on the corner of described two-stage staircase structural model.
7. nozzle ring aisle spare measuring instrument according to claim 6, is characterized in that: described measurement section active side is lever, and it is hinged that the middle part of described lever and measurement section fixed mount pass through rotating shaft.
8. nozzle ring aisle spare measuring instrument according to claim 7, is characterized in that: described measurement section fixed mount is arranged on the side of described measurement section, and described torsion spring is arranged on described measurement section fixed mount by straight pin.
9. calculate a method for nozzle ring cross sectional area, it is characterized in that: nozzle ring single cross sectional area computing formula is as follows:
Si=h×[（A1+A2+A3）/3+（A3-A1）（2×h1+2×h2-h）]/(4×h2)]；
Nozzle ring cross sectional area is: S=Ci × Si;
Wherein: Si is current channel area of section, Ci be current Measurement channel number, S be area and;
With blade exhaust limit for locating surface, set three measurement points B1, B2, B3, with blade exhaust limit for benchmark, described three somes B1, B2, B3 are followed successively by h1, h1+h2, h1+h2+h2 apart from the distance on exhaust limit, the nozzle ring channel cross-section width of described three somes B1, B2, B3 is respectively A1, A2, A3, h is nozzle ring channel cross-section total length, survey size h, A1, A2, A3 must on same level cross sections.
10. method according to claim 9, it is characterized in that: use the measuring instrument according to any one of claim 1 to 8 to measure, the measurement section corresponding measurement point B1 respectively of wherein said three measuring units, B2, B3, all described fixing gauge heads are all fitted with fixed measuring point, all described floating gauge heads are all fitted with floating measurement point, between fixed measuring point with floating measurement point two measurement point, spacing is delivered to described three parallel displacement transducers and is surveyed A1, A2, A3, the distance of the end measurement of the measurement section fixation side that described 4th lever is adjacent is delivered to described 4th displacement transducer and is surveyed h value,
Wherein, during measurement, described limited block and blade are vented limit and contact,
In three parallel measurement section, the distance between adjacent two fixation side is equal,
H1 and h2 is setting value, and A1, A2, A3 are measured by three parallel institute displacement sensors respectively, and h is drawn by described 4th displacement transducer,
H1, h2, h, A1, A2, A3 are substituted into Si=h × [(A1+A2+A3)/3+(A3-A1) (2 × h1+2 × h2-h)]/(4 × h2)], obtain the single cross sectional area of nozzle ring.
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| CN108072407A (en) * | 2017-12-05 | 2018-05-25 | 常州中车汽车零部件有限公司 | Turbine case flow-paths inspection system and method |
| CN111521145A (en) * | 2020-04-30 | 2020-08-11 | 中国航发成都发动机有限公司 | Turbine guide blade exhaust area measuring device and measuring method |
| CN113607119A (en) * | 2021-07-26 | 2021-11-05 | 中国船舶重工集团公司第七0三研究所 | Method for measuring throat area of marine gas turbine blade based on characteristic dimension |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107727052A (en) * | 2017-09-28 | 2018-02-23 | 中国航发动力股份有限公司 | A kind of convertible guide vane throat area clamping device |
| CN107727052B (en) * | 2017-09-28 | 2020-02-11 | 中国航发动力股份有限公司 | Turnover guide blade throat area clamping device |
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| CN111521145A (en) * | 2020-04-30 | 2020-08-11 | 中国航发成都发动机有限公司 | Turbine guide blade exhaust area measuring device and measuring method |
| CN113607119A (en) * | 2021-07-26 | 2021-11-05 | 中国船舶重工集团公司第七0三研究所 | Method for measuring throat area of marine gas turbine blade based on characteristic dimension |
| CN114485494A (en) * | 2022-01-25 | 2022-05-13 | 贵州航谷动力科技有限公司 | Circulating gas turbine director water flow detecting system |
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