CN115752617A - Blade flow test fixture - Google Patents

Abstract

The invention discloses a blade flow test fixture, which comprises: the supporting block is fixedly connected to the base and used for placing the blade, and the supporting surface of the supporting block is matched with the profile of the blade back of the blade; the positioning assembly is used for positioning the blade so that the blade is relatively fixed with the base along the length direction of the blade and the blade is relatively fixed with the base along the width direction of the blade; the pressing assembly comprises a pressing plate and a sealing gasket, the pressing plate is fixedly connected to the base through a limiting pin and used for fixing the blade on the supporting block, the sealing gasket is located between the pressing plate and the blade, the pressing surface of the sealing gasket is matched with the profile of the exhaust surface of the blade, a gas outlet matched with the gas outlet hole is formed in the sealing gasket, a sealing groove for accommodating the sealing gasket is formed in the pressing plate, a gas outlet corresponding to the gas outlet is formed in the pressing plate, and the sealing threaded hole is sealed through the sealing gas outlet so that the gas outlet hole is sealed.

Description

Blade flow test fixture

Technical Field

The invention relates to the technical field of blade flow testing tools, in particular to a blade flow testing clamp.

Background

The engine stator vane needs to measure the air flow of a single exhaust port and the total exhaust flow according to design requirements so as to check the air circulation performance of a vane passage. The blade exhaust ports are special-shaped holes, single sealing is not good, an operator always plugs plasticine or sealant into three exhaust ports for plugging when a single exhaust port flow test is carried out, then ventilation is carried out from the air inlet holes, and the flow of the single exhaust port is measured. And then plugging the tested exhaust port, taking the plasticine or the sealant of the other exhaust port out to measure the flow of the exhaust port, and repeating the operation until the exhaust port is tested. The method is inconvenient to operate, and when the plasticine and the sealant are not cleaned completely, the method not only influences the flow of the exhaust port to be detected, but also can generate excessive substances in the blade air passage.

Disclosure of Invention

The invention provides a blade flow testing clamp, which aims to solve the technical problem of how to conveniently measure the flow of a blade.

According to an aspect of the present invention, there is provided a blade flow rate testing jig for testing a flow rate of a blade, wherein a journal is disposed at one end of the blade in a length direction, an air inlet hole is disposed on a side wall of the journal, and a plurality of air outlet holes are disposed on an air outlet surface of the blade at intervals along the length direction of the blade, the jig comprising: the supporting block is fixedly connected to the base and used for placing the blade, and the supporting surface of the supporting block is matched with the profile of the blade back of the blade; the positioning assembly is arranged on the base and is used for positioning the blade so as to enable the blade to be fixed relative to the base along the length direction and to be fixed relative to the base along the width direction; the compressing assembly comprises a pressing plate and a sealing pad, the pressing plate is fixedly connected to the base through a limiting pin and is used for fixing the blades on the supporting block along the thickness direction, so that the sealing pad is located between the pressing plate and the blades, the compression surface of the sealing pad is used for being matched with the profile of the exhaust surface of the blades, the sealing pad is provided with a gas outlet matched with the gas outlet hole, the pressing plate is provided with a sealing groove for containing the sealing pad, the pressing plate is provided with a gas outlet corresponding to the gas outlet, the gas outlet comprises a gas groove for covering the gas outlet and a sealing threaded hole communicated with the gas groove, the sealing threaded hole is sealed through a sealing screw, and the sealing screw is provided with a sealing ring for sealing the sealing threaded hole so as to enable the gas outlet hole to be sealed.

Further, the positioning assembly comprises a first positioning pin and an air inlet mechanism connected with the shaft neck, and the first positioning pin and the air inlet mechanism are respectively abutted to two ends of the blade in the length direction; the positioning assembly further comprises a second positioning pin and a third positioning pin which are arranged at intervals in the length direction, and the second positioning pin and the third positioning pin are both used for being arranged on one side, away from the air outlet hole, in the width direction of the blade and are respectively abutted to the blade.

Furthermore, the first locating pin, the second locating pin and the third locating pin are all sleeved with buffering pieces used for protecting the blades.

Further, the mechanism of admitting air includes locating part and the seat of admitting air, it be used for with seted up on the seat of admitting air the holding tank that the axle journal matches and be used for with the air inlet of holding tank intercommunication, the air inlet be used for with the inlet port corresponds the setting, the seat of admitting air be located length direction ascending both ends be used for respectively with the blade with the locating part butt, so that the axle journal stretches into the holding tank is fixed, air inlet department can dismantle and be connected with the intake pipe that is used for receiving outside gas.

Further, be provided with between the intake pipe with the air inlet seat and be used for sealing the first sealing member of air inlet, the air inlet seat be equipped with be used for with the sealed second sealing member of blade face laminating.

Furthermore, an annular groove communicated with the accommodating groove is formed in the air inlet seat, a sealing ring is arranged in the annular groove, and the sealing ring is used for radial sealing of the shaft neck.

Further, fixedly connected with support on the base, the spacing groove has been seted up on the support, the ascending both sides of air inlet seat width direction respectively with the lateral wall butt of spacing groove.

Further, the limiting part comprises a support plate fixedly connected to the base and a fastening screw in threaded connection with the support plate, and the air inlet seat is abutted to the blade by screwing the fastening screw.

Further, the locating part still includes adjustable briquetting, the first end of adjustable briquetting seted up with the screw hole of fastening screw adaptation, the second end of adjustable briquetting be used for with the seat butt of admitting air.

Furthermore, the number of the limiting pins is two, the two limiting pins are respectively arranged on two sides of the supporting block, the pressing plate comprises a pressing portion used for covering the sealing gasket and connecting portions arranged on two sides of the pressing portion, and positioning holes for the limiting pins to penetrate through are formed in the connecting portions.

The invention has the following beneficial effects:

the blade flow test fixture is used for testing the flow of the blade, when in specific use, the blade is firstly placed on a support block, so that the blade back of the blade is contacted with the support surface of the support block, wherein the support surface is matched with the molded surface of the blade back, so that the blade back of the blade can be attached to the support surface when the blade is placed on the support block, then the blade is limited by a positioning component, so that the blade and a base are relatively fixed along the length direction of the blade, the blade and the base are relatively fixed along the width direction of the blade, then a sealing gasket is placed on the exhaust surface of the blade, wherein the shape of the surface, contacted with the blade, of the sealing gasket is matched with the exhaust surface of the blade, so that the sealing gasket can be completely attached to the blade, the sealing gasket is provided with air outlets matched with the shapes of the air outlet holes on the exhaust surface, the number of the air outlets is the same as the number of the air outlet holes, and the positions of the air outlets are correspondingly arranged, finally, the pressing plate is fixed on the base through a limiting pin, the pressing plate is enabled to press the sealing gasket tightly so as to enable the blade to realize the positioning in the height direction, a sealing groove used for containing the sealing gasket is formed on the specific pressing plate, the shape of the sealing groove is matched with that of the sealing gasket, an exhaust port arranged corresponding to the exhaust port is formed in the pressing plate, the exhaust port comprises an air groove used for covering the exhaust port and a sealing threaded hole communicated with the air groove, so that the exhaust port, the exhaust port and the exhaust port are sequentially communicated, in order to enhance the sealing performance during the gas circulation, the air groove needs to cover the exhaust port, the exhaust port and the exhaust port are sealed through the sealing gasket in an extruding manner, the sealing threaded hole can be sealed through a sealing screw so as to seal the exhaust port, and the sealing threaded hole is sealed through a sealing ring sleeved on the sealing screw, preventing gas leakage. Because each venthole is anomalous shape on the blade, be difficult to directly communicate the venthole through the outside pipeline, thereby it is inconvenient to collect gas, be difficult to detect the flow size of each venthole, this device cooperates the gas of collecting every venthole that corresponds through the gas outlet on sealed the pad and the gas tank on the clamp plate, then through the gas outgoing that sealed screw hole will be collected, make original venthole dress trade the sealed screw hole of rule, so that detect the flow through pipe connection check out test set, thereby improve the convenience that detects, simultaneously because sealed screw hole is the gas pocket of rule, be favorable to the zonulae occludens of pipeline, thereby sealing performance when improving the connection, reach the purpose that improves the testing result accuracy.

In the specific implementation, after the blades are installed and fixed, gas with a constant flow is injected into the blades through the gas inlet holes, and at the moment, when the flow of a certain gas outlet hole needs to be tested independently, the flow of the independent gas outlet hole can be tested only by opening the sealing threaded hole which is arranged corresponding to the gas outlet hole and sealing the sealing threaded hole which does not need to be measured through the sealing screw; and analogizing in sequence, the flow of all the air outlet holes can be tested one by one, and if the total flow needs to be measured, the total flow of the gas of the blade is measured after all the threaded holes are opened. The clamp can test the flow of the required air outlet only by fixing the blade in place and matching the sealing screw with the sealing threaded hole, is simple and convenient to operate, and solves the problem that residual plugging materials at the air outlet are not easy to clean when plugging is carried out through plasticine or sealant in the existing method.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a blade according to the present invention;

FIG. 2 is a schematic structural view of a vane flow test fixture in accordance with a preferred embodiment of the present invention;

FIG. 3 is a top view of a vane flow test fixture of the preferred embodiment of the present invention;

FIG. 4 is a front view of a vane flow test fixture of the preferred embodiment of the present invention

FIG. 5 is a schematic view of the structure of a gasket according to a preferred embodiment of the present invention;

FIG. 6 is a schematic structural view of a platen according to a preferred embodiment of the present invention;

fig. 7 is a schematic structural view of an air inlet seat according to a preferred embodiment of the present invention.

Illustration of the drawings:

100. a blade; 101. a journal; 102. an air intake; 103. an air outlet;

200. a base; 201. a spacing pin;

300. a support block;

400. a first locating pin; 401. a second positioning pin; 402. a third positioning pin; 403. a buffer member;

500. an air intake mechanism; 501. an air inlet seat; 502. accommodating a tank; 503. an air inlet; 504. an air inlet pipe; 505. a limiting member; 506. a support plate; 507. fastening screws; 508. an adjustable pressing block; 509. a support; 510. a limiting groove; 511. an annular groove;

600. a compression assembly; 601. pressing a plate; 602. a pressing part; 603. a sealing groove; 604. an exhaust port; 605. an air tank; 606. sealing the threaded hole; a 607 connection portion; 608. positioning holes; 609. a gasket; 610. an air outlet;

700. a first seal member; 701. a second seal member; 702. a seal ring; 703. a seal ring;

800. and sealing the screw.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be practiced in many different ways, which are defined and covered by the following.

As shown in fig. 1 to 5, the blade flow rate testing fixture of this embodiment is used for testing the flow rate of a blade 100, a shaft neck 101 is disposed at one end of the blade 100 in the length direction, an air inlet 102 is disposed on a side wall of the shaft neck 101, and a plurality of air outlets 103 are disposed on an exhaust surface of the blade 100 along the length direction of the blade 100 at intervals, and includes: the blade comprises a base 200, a supporting block 300, a positioning assembly and a pressing assembly 600, wherein the supporting block 300 is fixedly connected to the base 200, the supporting block 300 is used for placing the blade 100, and a supporting surface of the supporting block 300 is matched with the profile of the blade back of the blade 100; the positioning assembly is arranged on the base 200 and is used for positioning the blade 100 so that the blade 100 is fixed relative to the base 200 along the length direction of the blade 100 and the blade 100 is fixed relative to the base 200 along the width direction of the blade 100; the pressing assembly 600 comprises a pressing plate 601 and a sealing gasket 609, the pressing plate 601 is fixedly connected to the base 200 through a limiting pin 201 and used for fixing the blade 100 on the supporting block 300 along the thickness direction, so that the sealing gasket 609 is located between the pressing plate 601 and the blade 100, a pressing surface of the sealing gasket 609 is used for being matched with a profile of an exhaust surface of the blade 100, an air outlet 610 matched with the air outlet hole 103 is formed in the sealing gasket 609, a sealing groove 603 for accommodating the sealing gasket 609 is formed in the pressing plate 601, an air outlet 604 corresponding to the air outlet 610 is formed in the pressing plate 601, the air outlet 604 comprises an air groove 605 for covering the air outlet 610 and a sealing threaded hole 606 communicated with the air groove 605, the sealing threaded hole 606 is sealed through a sealing screw 800, and the sealing screw 800 is provided with a sealing ring 703 for sealing the sealing threaded hole 606, so that the air outlet hole 103 is sealed.

In this embodiment, the length direction of the blade 100 is the X-axis direction, the width direction of the blade 100 is the Y-axis direction, the thickness direction of the blade 100 is the Z-axis direction, wherein the number of the air outlets 103 of the blade 100 is four, and the air outlets are arranged at intervals along the X-axis direction, the side wall of the journal 101 is provided with the air inlets 102, and the air inlets 102 are arranged towards the Y-axis direction, so as to conveniently fix the two ends of the blade 100 in the X-axis direction, the journal 101 is communicated with the inside of the blade 100, so that the gas can flow into the journal 101 through the air inlets 102, enter the blade 100, and finally is discharged through the air outlets 103. The base 200 is used for setting up each subassembly in order to fix the blade 100, and the supporting shoe 300 is fixed with the base 200 through the double-screw bolt dismantlement, and the holding surface of supporting shoe 300 keeps unanimous with the profile of blade 100 back of the leaf for when the blade 100 was placed on the supporting shoe 300, the back of the leaf of blade 100 can laminate with the holding surface, thereby made placing that the blade 100 can be stable on the supporting shoe 300. The gasket 609 is a rubber gasket 609 and has a certain compression space, the gasket 609 is of an equal-thickness profile structure, the profile of the gasket 609 is the same as that of the exhaust surface, and the shape of the air outlet 610 formed in the gasket 609 is matched with that of the air outlet hole 103, and the area of the air outlet 610 is slightly larger than that of the air outlet hole 103, so that the air outlet 610 can cover the air outlet hole 103. The pressure plate 601 is fixed with the base 200 through the limiting pin 201, the blade 100 is pressed tightly to prevent the blade 100 from moving in the Z direction, a sealing groove 603 used for accommodating a sealing gasket 609 is formed in the pressure plate 601, the shape of the sealing groove 603 is matched with that of the sealing gasket 609, an air outlet 604 arranged corresponding to the air outlet 610 is formed in the pressure plate 601, the air outlet 604 comprises an air groove 605 used for covering the air outlet 610 and a sealing threaded hole 606 communicated with the air groove 605, so that the air outlet 604, the air outlet 610 and the air outlet hole 103 are sequentially communicated, in order to enhance the sealing performance during air circulation, the air groove 605 needs to cover the air outlet 610, the air outlet 610 needs to cover the air outlet hole 103, the air outlet 604 and the air outlet hole 103 are sealed through extrusion of the sealing gasket 609, and the sealing threaded hole 606 can be sealed through a sealing screw 800, so that the air outlet hole 103 is sealed.

When the blade 100 is installed, firstly, the blade 100 is placed on the supporting block 300, so that the blade back of the blade 100 is in contact with the supporting surface of the supporting block 300, wherein the supporting surface is matched with the profile of the blade back, so that the blade back of the blade 100 can be attached to the supporting surface when the blade 100 is placed on the supporting block 300, then, the blade 100 is limited by the positioning component, so that the blade 100 and the base 200 are relatively fixed along the length direction of the blade 100, and the blade 100 and the base 200 are relatively fixed along the width direction of the blade 100, then, the sealing gasket 609 is placed on the exhaust surface of the blade 100, wherein the shape of the surface, in contact with the blade 100, of the sealing gasket 609 is matched with the exhaust surface of the blade 100, so that the sealing gasket 609 can be completely attached to the blade 100, the sealing gasket 609 is provided with the air outlets 610, which are matched with the shapes of the air outlets 103, the number of the air outlets 610 is the same as the number of the air outlets 103, and the positions of the air outlets 610 are arranged corresponding to the air outlets 103, finally, the pressure plate 601 is fixed on the base 200 through the limit pin 201, and the pressure plate 601 presses the gasket 609 to enable the blade 100 to realize the positioning in the height direction, specifically, a sealing groove 603 for accommodating the gasket 609 is formed on the pressure plate 601, the shape of the sealing groove 603 is matched with that of the gasket 609, an exhaust port 604 arranged corresponding to the air outlet 610 is formed on the pressure plate 601, the exhaust port 604 comprises an air groove 605 for covering the air outlet 610 and a sealing threaded hole 606 communicated with the air groove 605, so that the exhaust port 604, the air outlet 610 and the air outlet hole 103 are communicated in sequence, in order to enhance the sealing performance during the air circulation, the air groove 605 needs to cover the air outlet 610, the air outlet 610 needs to cover the air outlet hole 103, the space between the exhaust port 604 and the air outlet hole 103 is sealed through the gasket 609, and the sealing threaded hole 606 can be sealed through a sealing screw 800, so that the air outlet 103 is closed, and the sealing threaded hole 606 is sealed by the sealing ring 703 sleeved on the sealing screw 800, thereby preventing air leakage. Because each venthole 103 is anomalous shape on the blade 100, it is difficult to directly communicate venthole 103 through the outside pipeline, thereby it is inconvenient to collect gas, it is difficult to detect the flow size of each venthole 103, this device cooperates the gas of collecting every venthole 103 that corresponds through gas outlet 610 on sealed pad 609 and the gas tank 605 on the clamp plate 601, then through sealed screw hole 606 with the gas outgoing who collects, make original venthole 103 dress change to regular sealed screw hole 606, so that detect the flow through pipe connection check out test set, thereby improve the convenience that detects, simultaneously because sealed screw hole 606 is regular gas pocket, be favorable to the zonulae occludens of pipeline, thereby sealing performance when improving the connection, reach the purpose of improving the testing result accuracy.

During measurement, after the blade 100 is installed and fixed, gas with a constant flow is injected into the blade 100 through the gas inlet hole 102, and at this time, when the flow of a certain gas outlet hole 103 needs to be tested independently, only the sealing threaded hole 606 which is arranged correspondingly to the blade needs to be opened, and the sealing threaded hole 606 which corresponds to the gas outlet hole 103 and does not need to be measured is sealed through the sealing screw 800, so that the flow of the independent gas outlet hole 103 can be tested, specifically, after the gas flows into the blade 100 through the gas inlet hole 102, the gas flows out of the blade 100 through the gas outlet hole 103, at this time, the gas flows out through the gas outlet 610 and the gas groove 605 and finally flows out of the sealing threaded hole through the gas outlet 610 and the gas groove 605, in the second process, the gas outlet 103, the gas outlet 610 and the gas groove 605 are all irregular gas holes, and the gas flows out through the gas groove 605 and then enters the regular sealing threaded hole 606, so that external inspection equipment can be directly communicated with the sealing threaded hole 606 through a pipeline for inspection, and then inspection convenience is improved, and meanwhile, a sealing gasket is arranged between the pressure plate 601 and the blade 100, so that the three are tightly adhered to achieve good sealing performance; and analogizing in sequence, the flow of all the air outlet holes 103 can be tested one by one, and if the total flow needs to be measured, the total flow of the gas of the blade 100 is measured after all the threaded holes are opened. The clamp can test the flow of the air outlet hole 103 by only fixing the blade 100 in place and matching the sealing screw 800 with the sealing threaded hole 606, is simple and convenient to operate, and solves the problem that residual plugging materials at the air outlet hole 103 are not easy to clean when plugging is carried out through plasticine or sealant in the prior art.

Further, the positioning assembly comprises a first positioning pin 400 and an air inlet mechanism 500 for connecting with the journal 101, wherein the first positioning pin 400 and the air inlet mechanism 500 are respectively used for abutting against two ends of the blade 100 in the length direction; the positioning assembly further comprises a second positioning pin 401 and a third positioning pin 402 which are arranged at intervals along the length direction, and the second positioning pin 401 and the third positioning pin 402 are arranged on one side, far away from the air outlet hole 103, of the width direction of the blade 100 and are respectively abutted to the blade 100.

In this embodiment, the first positioning pin 400 and the air intake mechanism 500 are respectively disposed at two ends of the blade 100 in the X-axis direction, and the air intake mechanism 500 abuts against one end of the blade 100 where the journal 101 is located, the first positioning pin 400 abuts against the other end of the blade 100 in the X-axis direction, so that the blade 100 is fixed in the X-axis direction relative to the base 200, the second positioning pin 401 and the third positioning pin 402 are arranged in the X-axis direction and are located on one side of the blade 100, which is far away from the air outlet 103, in the Y-axis direction and abut against the blade 100, and the back-fit pressure plate 601 is disposed to prevent the blade 100 from moving in the Y-axis direction on the one hand and prevent the blade 100 from rotating in the YZ plane on the other hand. Specifically, during installation, one side of the blade 100 in the width direction is first supported by the second positioning pin 401 and the third positioning pin 402, the journal 101 of the blade 100 is then connected and abutted to the air intake mechanism 500, and the other end of the blade 100 is fixed to the first positioning pin 400.

Further, the first positioning pin 400, the second positioning pin 401, and the third positioning pin 402 are respectively sleeved with a buffer 403 for protecting the blade 100.

In this embodiment, bolster 403 can dismantle with first locating pin 400, second locating pin 401 and third locating pin 402 respectively and be connected, and is specific can the screw thread screw in, also can the interference fit cover establish on each locating pin, and the thickness of bolster 403 can choose for use according to actual demand to reach and stabilize the butt with blade 100, thereby can adapt to not unidimensional blade 100. The buffer member 403 may be a bushing, specifically, a copper bushing or a bushing made of wear-resistant PA66, or a rubber sleeve or a silicone sleeve with certain elasticity may be used to protect the blade 100.

Referring to fig. 3 and 7, the air inlet mechanism 500 includes a limiting member 505 and an air inlet seat 501, an accommodating groove 502 for matching with the journal 101 and an air inlet 503 for communicating with the accommodating groove 502 are formed on the air inlet seat 501, the air inlet 503 is arranged corresponding to the air inlet hole 102, two ends of the air inlet seat 501 in the length direction are used for respectively abutting against the blade 100 and the limiting member 505, so that the journal 101 extends into the accommodating groove 502 for fixing, and an air inlet pipe 504 for receiving external air is detachably connected to the air inlet 503.

In this embodiment, the journal 101 is a stepped shaft, the receiving groove 502 is a stepped groove, and the receiving groove 502 is configured to cooperate with the journal 101 to position the blade 100 so as to prevent the blade 100 from moving in YZ plane, and to receive the journal 101 so as to abut the end surface of the inlet seat 501 with the end surface of the blade 100, thereby utilizing the fixation of the blade 100. Still set up the air inlet 503 with holding tank 502 intercommunication on the air inlet seat 501, and air inlet 503 department detachable be connected with be used for receiving the outside gaseous intake pipe 504, and is specific, the first end of this intake pipe 504 be for being used for the toper end of being connected with external equipment, and the toper end includes the frictional force when a plurality of toper step faces in order to increase the connection outside pipeline. Therefore, the connection stability is improved, and the external pipeline is not easy to fall off from the conical end when gas is injected from the conical end; the second end of the air inlet pipe 504 is a threaded end, the air inlet 503 comprises an air inlet channel communicated with the air inlet hole 102 and a threaded channel communicated with the air inlet channel, and the air inlet pipe 504 and the air inlet seat 501 are detachably fixed through threaded connection of the threaded end and the threaded channel, so that the air inlet pipe 504 is conveniently maintained and replaced. Set up the holding tank 502 and the convenient washing of air inlet 503 of intercommunication to air inlet seat 501 simultaneously, during the concrete implementation, let in high-pressure clean gas or clear water by air inlet 503 one end, the clean gas or the clear water that let in are discharged by the notch of holding tank 502 after air inlet seat 501 is inside through, thereby accomplish the washing to air inlet seat 501 inside, pile up the jam after preventing dust or particulate matter entering air inlet seat 501 is inside, thereby influence the flow measurement of each venthole 103 on follow-up blade 100. The setting of locating part 505 is used for fixing air inlet seat 501, the first locating pin 400 of further cooperation is fixed blade 100, also conveniently install air inlet seat 501, it is concrete, after axle journal 101 embedding holding tank 502, the position of air inlet seat 501 is being adjusted, make air inlet seat 501 and steady placing on base 200, rethread locating part 505 is spacing air inlet seat 501, so that air inlet seat 501 and blade 100 butt are fixed, thereby make blade 100 accomplish the ascending spacing of X axle side under air inlet seat 501 and first locating pin 400's effect and fix.

Further, a first sealing member 700 for sealing the air inlet 503 is disposed between the air inlet pipe 504 and the air inlet seat 501, and the air inlet seat 501 is provided with a second sealing member 701 for surface-fitting sealing with the blade 100.

In this embodiment, the first sealing element 700 and the second sealing element 701 are both elastic sealing rings, specifically, the first sealing element 700 is sleeved on the threaded end of the air inlet pipe 504, and the inner side wall of the first sealing element 700 abuts against the maximum outer diameter of the threaded end, so as to facilitate the fixing of the first sealing element 700, the threaded end is further connected with a gland nut, and after the threaded end is specifically screwed into the air inlet 503, the gland nut is screwed, so that the first sealing element 700 is pressed by the gland nut to complete the sealing of the end surface of the air inlet 503, thereby preventing the air from leaking out of the air inlet 503 after the air inlet pipe 504 is ventilated, and improving the accuracy of flow detection of each air outlet hole 103; the annular groove is formed in the end face, abutted against the blade 100, of the air inlet seat 501 so as to place the second sealing element 701, the annular groove is located on the periphery of the notch of the accommodating groove 502, and the two ends of the second sealing element 701 are respectively abutted against the groove bottom of the annular groove and the end face of the blade 100, so that the notch of the accommodating groove 502 is sealed.

Further, an annular groove 511 which is communicated with the accommodating groove 502 is formed in the air inlet seat 501, a sealing ring 702 is arranged in the annular groove 511, and the sealing ring 702 is used for radial sealing of the journal 101. In this embodiment, the annular groove 511 is configured to receive a sealing ring 702, and an inner wall of the sealing ring 702 abuts an outer side wall of the journal 101 to radially seal the journal 101. Specifically, on the one hand, the installation stability of the journal 101 is improved, and on the other hand, the gas flowing out of the non-intake holes 102 is blocked, so that the gas flows to the intake holes 102 again and enters the blade 100, thereby further improving the accuracy of the gas flow test.

Further, fixedly connected with support 509 on the base 200, spacing groove 510 has been seted up on the support 509, the ascending both sides of the seat of admitting air 501 width direction respectively with the lateral wall butt of spacing groove 510.

In this embodiment, the support 509 is used for placing the air inlet seat 501, and two sides of the air inlet seat 501 in the width direction are respectively abutted against the side walls of the limiting groove 510, so that the air inlet seat 501 is fixed in the width direction and the air inlet seat 501 is prevented from moving in the Y-axis direction. Meanwhile, the arrangement of the limiting groove 510 provides a guiding function for the installation of the air inlet seat 501.

Further, the stopper 505 includes a support plate 506 fixedly connected to the base 200 and a fastening screw 507 threadedly connected to the support plate 506, and the air inlet seat 501 abuts against the blade 100 by screwing the fastening screw 507. In this embodiment, the air inlet seat 501 is fixed by the fastening screw 507, so as to facilitate installation of the air inlet seat 501, in particular, after the air inlet seat 501 is placed on the support 509, the shaft journal 101 extends into the accommodating cavity, the fastening screw 507 is screwed to abut against the air inlet seat 501, and the moving direction of the fastening screw 507 is the X-axis direction, so that the vane 100 is clamped by the air inlet seat 501 and the first positioning pin 400 under the action of the fastening screw 507.

Further, the number of the limiting pins 201 is two, the two limiting pins 201 are respectively disposed on two sides of the supporting block 300, the pressing plate 601 includes a pressing portion 602 for covering the sealing gasket 609 and a connecting portion 607 disposed on two sides of the pressing portion 602, and a positioning hole 608 for the limiting pin 201 to pass through is disposed on the connecting portion 607.

Further, the number of the limiting pins 201 is two, the two limiting pins 201 are respectively disposed on two sides of the blade 100 in the width direction, the pressing plate 601 includes a pressing portion 602 for covering the sealing pad 609 and a connecting portion 607 disposed on two sides of the pressing portion 602, and a positioning hole 608 for the limiting pin 201 to pass through is disposed on the connecting portion 607. In this embodiment, the connection portion 607 is fixed by the stopper pin 201 fixedly connected to the base 200, thereby completing the installation of the pressing plate 601. The arrangement position of the pressing plate 601 is limited by the matching installation of the pressing plate 601 and the limiting pin 201, and the matching relation of the pressing plate 601 and the supporting block 300 is ensured, so that the position of the pressing plate 601 can not deviate when the blade 100 is pressed, the blade 100 can be better pressed and fixed, and meanwhile, the matching of the positions of the air outlets 604 on the pressing plate 601 and the air outlets 103 on the blade 100 is facilitated. In another embodiment, in order to mount the pressing plate 301 on the stopper pin 201 more quickly, the free end of the stopper pin 201 is chamfered to form a conical surface, and after the pressing plate 601 is mounted, the pressing plate 601 is fixed by the nut cooperating with the stopper pin 201.

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

Claims (10)

1. The utility model provides a blade flow test fixture for the flow of test blade (100), the ascending one end of blade (100) length direction is provided with axle journal (101), inlet port (102) have been seted up on the lateral wall of axle journal (101), follow on the exhaust surface of blade (100) a plurality of ventholes (103) have been seted up to blade (100) length direction upward interval, its characterized in that includes:

a base (200);

the supporting block (300), the supporting block (300) is fixedly connected to the base (200), the supporting block (300) is used for placing the blade (100), and the supporting surface of the supporting block (300) is matched with the profile of the blade back of the blade (100);

a positioning assembly provided on the base (200) for positioning the blade (100) such that the blade (100) is fixed relative to the base (200) in a length direction and the blade (100) is fixed relative to the base (200) in a width direction;

pressing assembly (600), pressing assembly (600) includes clamp plate (601) and sealed pad (609), clamp plate (601) pass through spacer pin (201) fixed connection in base (200) and be used for fixing blade (100) along the thickness direction on supporting shoe (300), so that sealed pad (609) are located clamp plate (601) with between blade (100), just the pressing surface of sealed pad (609) be used for with the profile matching of the exhaust face of blade (100), seted up on sealed pad (609) be used for with gas outlet (610) that venthole (103) match, set up on clamp plate (601) and hold seal groove (603) of sealed pad (609), set up on clamp plate (601) with gas outlet (604) that gas outlet (610) correspond the setting, gas outlet (604) are including being used for covering gas groove (605) of gas outlet (610) and with sealed screw hole (606) that gas groove (605) communicate, sealed screw hole (606) are sealed through sealing screw (800), be provided with on sealed screw (800) be used for sealed screw hole (703), make sealed screw hole (103) seal closed.

2. The vane flow test fixture of claim 1, wherein the positioning assembly comprises a first positioning pin (400) and an air inlet mechanism (500) connected with the journal (101), the first positioning pin (400) and the air inlet mechanism (500) are used for abutting against two ends of the vane (100) in the length direction respectively; the positioning assembly further comprises a second positioning pin (401) and a third positioning pin (402) which are arranged at intervals in the length direction, and the second positioning pin (401) and the third positioning pin (402) are arranged on one side, away from the air outlet hole (103), in the width direction of the blade (100) and are respectively abutted to the blade (100).

3. The blade flow test fixture of claim 2, wherein the first locating pin (400), the second locating pin (401), and the third locating pin (402) are each sleeved with a bumper (403) for protecting the blade (100).

4. The blade flow test fixture according to claim 2, wherein the air inlet mechanism (500) comprises a limiting piece (505) and an air inlet seat (501), an accommodating groove (502) matched with the journal (101) and an air inlet (503) communicated with the accommodating groove (502) are formed in the air inlet seat (501), the air inlet (503) is used for being arranged corresponding to the air inlet hole (102), two ends of the air inlet seat (501) in the length direction are used for being respectively abutted against the blade (100) and the limiting piece (505) so that the journal (101) can be fixedly inserted into the accommodating groove (502), and an air inlet pipe (504) used for receiving external air is detachably connected to the air inlet (503).

5. The blade flow test fixture of claim 4, wherein a first seal (700) for sealing the air inlet (503) is arranged between the air inlet pipe (504) and the air inlet seat (501), and the air inlet seat (501) is provided with a second seal (701) for surface-fitting sealing with the blade (100).

6. The flow test fixture according to claim 4, characterized in that the air inlet seat (501) is provided with an annular groove (511) communicated with the accommodating groove (502), a sealing ring (702) is arranged in the annular groove (511), and the sealing ring (702) is used for radial sealing of the journal (101).

7. The blade flow test fixture of claim 4, wherein a support (509) is fixedly connected to the base (200), a limit groove (510) is formed in the support (509), and two sides of the air inlet seat (501) in the width direction are respectively abutted to side walls of the limit groove (510).

8. The blade flow test fixture according to claim 4, characterized in that the retainer (505) comprises a support plate (506) fixedly connected to the base (200) and a fastening screw (507) in threaded connection with the support plate (506), the air intake seat (501) being brought into abutment with the blade (100) by screwing the fastening screw (507).

9. The blade flow test fixture according to claim 8, characterized in that the stopper (505) further comprises an adjustable pressing block (508), a first end of the adjustable pressing block (508) is provided with a threaded hole adapted to the fastening screw (507), and a second end of the adjustable pressing block (508) is used for abutting against the air inlet seat (501).

10. The blade flow test fixture according to claim 1, wherein the number of the limiting pins (201) is two, the two limiting pins (201) are respectively disposed on two sides of the support block (300), the pressure plate (601) includes a pressing portion (602) for covering the gasket (609) and a connecting portion (607) disposed on two sides of the pressing portion (602), and a positioning hole (608) for the limiting pin (201) to pass through is formed in the connecting portion (607).

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