CN114878174A

CN114878174A - Device for testing rotating member in high-temperature environment

Info

Publication number: CN114878174A
Application number: CN202210350696.5A
Authority: CN
Inventors: 关鹏; 艾延廷; 赵行民; 郜伟强; 石炜; 田晶; 姚玉东
Original assignee: Shenyang Aerospace University
Current assignee: Shenyang Aerospace University
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-08-09

Abstract

The invention provides a device for testing a rotating member in a high-temperature environment, which comprises: the test section is used for providing a simulated high-temperature environment for the rotating piece and is provided with a first through hole and a second through hole; the first pulling force component is used for pulling one end of the rotating piece extending out of the first through hole; the second tension assembly is used for pulling one end of the rotating piece extending out of the second through hole; the first sleeve is connected outside the first through hole and sleeved outside the first tension assembly, and at least one first air inlet channel is arranged on the first sleeve; the second sleeve is connected outside the second through hole and sleeved outside the second tension assembly, and at least one second air inlet channel is arranged on the second sleeve; the air pressure source is connected with the at least one first air inlet channel and/or the at least one second air inlet channel and provides air pressure which is larger than or equal to the ambient pressure in the test section. The invention can accurately simulate the heat engine coupling loading environment in which the rotating piece is positioned in actual work, and effectively improve the reliability and accuracy of the test result.

Description

Device for testing rotating member in high-temperature environment

Technical Field

The invention relates to the technical field of aeroengines, in particular to a device for testing a rotating member in a high-temperature environment.

Background

With the rapid development of the modern aviation industry and the urgent need of national defense, higher and higher requirements are put forward on the performance of the aircraft engine. The turbine blade of the aero-engine bears the rapid washing of high-temperature gas during starting and the rapid cooling during parking, and during the cycle process of starting and parking, the thermal fatigue of the blade is caused due to the fact that the temperature gradient of the blade is large to generate great thermal stress, so that the thermal shock test of the turbine blade needs to be carried out, and the thermal shock resistance of the blade is examined; in addition, because the blade rotates at a high speed to generate a large centrifugal force load, and the temperature gradient and the mechanical load act together to generate the thermal mechanical coupling fatigue of the blade, the thermal mechanical coupling test of the turbine blade is required to be carried out to examine the thermal mechanical fatigue performance of the blade.

At present, the traditional turbine blade thermo-mechanical coupling fatigue test method is difficult to simulate the temperature field of the turbine blade in actual engine operation, and the reliability and accuracy of the test result are difficult to further improve. Accordingly, there is a need for an apparatus for testing rotating parts in a high temperature environment.

Disclosure of Invention

An aspect of an embodiment of the present specification discloses an apparatus for testing a rotating member in a high temperature environment, including:

the test section is used for providing a simulated high-temperature environment for the rotating piece, is hollow, and is correspondingly provided with a first through hole and a second through hole on two opposite side walls;

the first pulling force component is used for pulling one end of the rotating piece extending out of the first through hole;

the second tension assembly is used for pulling one end, extending out of the second through hole, of the rotating piece;

the first sleeve is connected outside the first through hole and sleeved outside the first tension assembly, and at least one first air inlet channel is circumferentially arranged on the first sleeve;

the second sleeve is connected outside the second through hole and sleeved outside the second tension assembly, and at least one second air inlet channel is circumferentially arranged on the second sleeve;

an air pressure source connected to the at least one first air intake passage and/or the at least one second air intake passage and providing an air pressure greater than or equal to the ambient pressure within the test section.

In some embodiments, a pressure sensor is disposed within the test section for transmitting a pressure signal to the air pressure source to dynamically adjust air pressure.

In some embodiments, the first air inlet channel is provided with a plurality of air inlet channels which are evenly distributed on the circumferential surface of the first sleeve; the second air inlet channels are distributed on the circumferential surface of the second sleeve uniformly.

In some embodiments, the cross-section of the trial segment is a sector.

In some embodiments, the rotating member sequentially comprises a first connecting section, a main body end and a second connecting section, the first tension assembly is connected with the first connecting section, the second tension assembly is connected with the second connecting section, and the test section is respectively provided with at least one simulation member which is consistent with the shape and structure of the main body end on two opposite sides of the main body end in the transverse direction so as to simulate the working environment in which the main body end is actually positioned.

In some embodiments, the test section includes a front end channel and a rear end channel, the front end channel is communicated with the rear end channel, and an included angle is formed between the front end channel and the rear end channel in the axial direction, and the first through hole and the second through hole are arranged at the communication position of the front end channel and the rear end channel.

In some embodiments, the included angle is determined from an included angle between a tangent to one end of a mean camber line and a tangent to the other end of the mean camber line in a cross-section of the central portion of the rotating member.

In some embodiments, the first pulling force assembly is detachably connected to the rotating member by a pin, and the second pulling force assembly is mortise and tenon connected to the rotating member; or

The first tension assembly is in mortise and tenon connection with the rotating piece, and the second tension assembly is detachably connected with the rotating piece through a bolt.

In some embodiments, the first pulling force assembly is detachably connected with the rotating member through a bolt, and the second pulling force assembly is detachably connected with the rotating member through a bolt; or

The first tension assembly is in mortise and tenon connection with the rotating piece, and the second tension assembly is in mortise and tenon connection with the rotating piece.

In some embodiments, the first tension assembly is sleeved with a third sleeve, the third sleeve is connected with the first sleeve, and a labyrinth is arranged on the inner annular surface of the third sleeve to form a labyrinth sealing structure; and/or

The second tension assembly is sleeved with a fourth sleeve, the fourth sleeve is connected with the second sleeve, and a grate is arranged on the inner ring surface of the fourth sleeve to form a grate sealing structure.

The embodiment of the specification can at least realize the following beneficial effects:

according to the invention, the first sleeve and the second sleeve are respectively arranged in the hollow test section, and the air pressure source provides air pressure matched with the high-temperature environment in the test section to the first air inlet channel and the second air inlet channel, so that the air pressure in the test section and the air pressure of the first sleeve and/or the second sleeve can reach dynamic balance, the high-temperature gas leakage can be effectively prevented, the temperature field of the turbine blade in the actual engine work can be accurately simulated, and the reliability and the accuracy of the test result can be effectively improved.

The invention can also reduce the temperature of the tension assembly, so that the tension assembly works in a safe and reliable working environment, the service life of the tension assembly is longer than that of the blade, the tension assembly can be reused, and the test cost is effectively reduced.

Drawings

FIG. 1 is a diagram of an application scenario of an apparatus for testing a rotating member in a high temperature environment, involved in some embodiments of the present description.

FIG. 2 is a schematic diagram of an apparatus for testing a rotating member in a high temperature environment according to some embodiments of the present disclosure.

Fig. 3 is a schematic view of a simulation involved in some embodiments of the present description.

Fig. 4 is a schematic view of an assembly structure of a first tension assembly, a second tension assembly and a rotating member according to some embodiments of the present disclosure.

Fig. 5 is an exploded view of the first tension assembly, the second tension assembly, and the rotating member in accordance with certain embodiments of the present disclosure.

Fig. 6 is a schematic view of a partial cross-sectional structure at a-a in fig. 2.

Fig. 7 is a schematic view of a rotating member according to some embodiments of the present disclosure.

FIG. 8 is a schematic diagram of the structure of a test section involved in some embodiments of the present description.

Fig. 9 is a partial sectional structure view at B-B in fig. 8.

FIG. 10 is a schematic illustration of a gas pressure source used in some embodiments of the present disclosure to deliver gas to a test section.

Reference numerals:

100. means for testing the rotating member in a high temperature environment; 110. a pressure source; 120. a combustion section; 130. a testing device; 140. a cooling section; 150. an exhaust section;

131. a test section; 132. a first tension assembly; 133. a second tension assembly; 134. a first sleeve; 135. a second sleeve; 136. a source of air pressure;

210. a first air intake passage; 220. a second intake passage; 230. a third sleeve; 240. a fourth sleeve; 250. a liquid inlet pipe; 260. a liquid outlet pipe;

310. a simulation member;

510. a rotating member; 511. a first connection section; 512. a body end; 513. a second connection section; 520. A tenon; 530. b, mortise drilling; 540. a bump; 541. a first positioning hole; 550. a connecting rod; 551. A groove; 552. a second positioning hole; 560. a bolt;

610. a front end channel; 620. a back end channel;

710. a liquid cooling channel; 720. a first through hole; 730. a second through hole; 740. and (4) grid teeth.

Detailed Description

The technical solutions of the present specification are described in further detail below with reference to the drawings, but the scope of the present specification is not limited to the following.

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step based on the embodiments in the present description belong to the protection scope of the present description. Thus, the following detailed description of the embodiments of the present specification, presented in the accompanying drawings, is not intended to limit the scope of the specification, as claimed, but is merely representative of selected embodiments of the specification. All other embodiments obtained by a person skilled in the art without any inventive step based on the embodiments in the present description belong to the protection scope of the present description.

In the description of the present specification, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present specification and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present specification.

In this specification, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and include, for example, fixed connections, detachable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

In this specification, unless explicitly stated or limited otherwise, the presence of a first feature above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other by way of additional features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. Including a first feature being directly below and obliquely below a second feature, or simply indicating that the first feature is at a lesser elevation than the second feature, if present below, under or below the second feature.

The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Referring now to the drawings, there is shown in the drawings selected embodiments of the present invention for illustrative purposes only and not intended to be limiting of the present invention.

FIG. 1 illustrates an application scenario of an apparatus for testing a rotating member in a high temperature environment according to some embodiments of the present invention.

As shown in FIG. 1, in some application scenarios, an apparatus 100 for testing rotating parts in a high temperature environment may include a pressure source 110, a combustion section 120, a test apparatus 130, a cooling section 140, and an exhaust section 150.

The pressure source 110 is used to appropriately pressurize the respective transport media of the combustion section 120 and the cooling section 140, either simultaneously or separately. Such as: when the gas pressure required by the test device 130 is 0.1-0.2 MPa, the pressure source 110 can pressurize the gas in the combustion section 120 to be greater than or equal to 0.1-0.2 MPa, so that the pressure of the gas introduced into the test device 130 from the combustion section 120 is in the pressure range of 0.1-0.2 MPa. The following steps are repeated: when the gas pressure in the test device 130 is 0.1-0.2 MPa, the pressure source 110 may pressurize the cooling medium of the cooling section 140 to a pressure greater than or equal to 0.1-0.2 MPa, so that the pressure of the cooling medium of the cooling section 140 for cooling the test device 130 is in a pressure range of 0.1-0.2 MPa, that is, the gas pressure in the test device 130 and the pressure of the cooling medium at the cooling position reach a dynamic balance, and the gas leakage can be effectively prevented. In practice, however, the dynamically balanced pressure differential allows for errors of up to ± 5%.

In some embodiments, the pressure source 110 may include a first pressure source 111 and a second pressure source 112. The first pressure source 111 may pressurize the combustion gases of the combustion section 120; the second pressure source 112 may pressurize the cooling medium of the cooling section 140.

In some embodiments, the pressure source 110 may be a gas pressurizing device for pressurizing a gas, such as: gas booster stage, gas booster pump, air compressor, electric gas booster, pneumatic gas booster, etc. In other embodiments, the pressure source 110 may be a fluid pressurization device for pressurizing a fluid, such as: liquid booster, liquid pressure boost system, liquid booster pump, refrigerant booster pump etc.. I.e., the pressure source 110 may be a pneumatic or hydraulic source.

The combustion section 120 is used for delivering high-temperature fuel gas to the testing device 130, and provides a high-temperature fuel gas testing environment for the rotating member 510. The combustion section 120 may be a combustion chamber, which is used to provide high-temperature fuel gas with a temperature above 1500K, even up to 2000K, for the testing device 130, and by adjusting the temperature of the fuel gas, the temperature cyclic load test of the rotating member 510 is realized.

In the specification, the high-temperature fuel gas refers to fuel gas with a temperature of more than 1500K, and the high-temperature environment refers to an environment with a temperature of more than 1500K.

The test apparatus 130 is used to simulate the high temperature environment and the centrifugal force load to which the rotating member 510 is subjected during actual operation. With regard to the specific structure of the testing device 130, reference may be made to fig. 2 and the related description.

The cooling section 140 is used for cooling the test section 131 and/or the first tension assembly 132 and/or the second tension assembly 133.

In some embodiments, the cooling section 140 may be a cooling tower, a cooling system, or the like.

In some embodiments, the cooling medium in the cooling section 140 may employ water. The water used as the cooling medium can be normal-temperature water or liquid cooling water which is cooled to be close to zero. In some embodiments, the cooling medium in the cooling section 140 may be a liquid with a freezing point lower than that of water. In other embodiments, the cooling medium in the cooling section 140 is cutting fluid commonly used in machine tool cooling systems. The lowest possible freezing point and heat exchange capacity need to be considered when selecting the cooling medium.

In some embodiments, the cooling medium in the cooling section 140 may employ a cooling gas. Cooling gases such as: cold air, etc.

The exhaust section 150 serves to pull the gas discharged from the test section 131 to prevent the gas from being discharged to the outside.

In some embodiments, the exhaust section 150 may be a draught fan, or the like exhaust traction device.

As shown in fig. 2, the trial 130 may include a trial segment 131, a first tension assembly 132, a second tension assembly 133, a first sleeve 134, a second sleeve 135, and a pneumatic source 136.

The test section 131 is used for providing a simulated high-temperature environment for the rotating member 510, the test section 131 is hollow to form a gas channel, and two opposite side walls of the test section 131 are respectively provided with a first through hole 720 and a second through hole 730. For a brief description of the specific structure of the first through hole 720 and the second through hole 730, see fig. 9.

In some embodiments, a pressure sensor is disposed within the test section 131 for transmitting a pressure signal to the air pressure source 136 for dynamically adjusting the air pressure. The pressure sensor may detect a gas pressure in the test section 131, and the gas pressure source 136 may receive a pressure signal of the gas pressure transmitted by the pressure sensor, that is, may dynamically adjust a pressure of the gas provided to the combustion section 120 and/or the cooling section 140, so as to ensure that the gas pressure in the test section 131 and the cooling medium pressure at the cooling position are in dynamic balance, or ensure that the cooling medium pressure at the cooling position is always greater than or equal to the pressure in the test section 131.

In some embodiments, the cross-section of the trial 131 is a sector. The sector means: the cross section of the hollow cavity of the test section 131 is fan-shaped, so that the high-temperature environment of the rotating member 510 in actual work can be accurately simulated.

In some embodiments, the side walls of the test section 131 are provided with liquid cooling channels 710 that surround the test section 131. For a brief description of the specific structure of the liquid cooling channel 710, see fig. 9.

In some embodiments, as shown in FIG. 2, the liquid cooling channel 710 is provided with an inlet tube 250 and an outlet tube 260. The cooling medium in the liquid cooling channel 710 enters from the liquid inlet pipe 250 and exits from the liquid outlet pipe 260.

The first pulling member 132 is used to pull the rotating member 510 out of the first through hole 720. The first pulling member 132 may be a rod-shaped device or means, such as a pulling rod, a pulling pin, etc., for pulling the rotating member 510 into and out of the testing section 131 through the first through hole 720.

In some embodiments, the first pulling member 132 may be provided with a power source such as a pulling machine, so that the first pulling member 132 drives the rotating member 510, so that the rotating member 510 enters and exits the testing section 131 through the first through hole 720.

In some embodiments, the first pulling force assembly 132 pulls the rotating member 510 at an end extending out of the first through hole 720, and the rotating member 510 has a mounting angle of 3 ° to 5 °. When the first pulling force assembly 132 is driven by a power source such as a pulling force machine, a tangential force is provided for the rotating member 510 to simulate a tangential force load applied to the rotating member 510 during rotation.

In some embodiments, the first pulling force assembly 132 is sleeved with a third sleeve 230, and the third sleeve 230 is connected with the first sleeve 134. In some embodiments, the first pulling force assembly 132 is sleeved with a third sleeve 230, the third sleeve 230 is connected with the first sleeve 134, and the inner annular surface of the third sleeve 230 is provided with a labyrinth 740 to form a labyrinth sealing structure. The labyrinth seal structure can reduce the outward leakage amount of the gas in the first sleeve 134 to ensure that the gas pressure in the first sleeve 134 and the pressure in the test section 131 keep dynamic balance, or ensure that the gas pressure in the first sleeve 134 is always greater than or equal to the pressure in the test section 131.

In some embodiments, the third sleeve 230 may be connected to the first sleeve 134 by a flange.

The second pulling member 133 is used to pull the other end of the rotating member 510 at the second through hole 730. The second pulling member 133 may be a rod-shaped device or means, such as a pulling rod, a pulling pin, etc., for pulling the rotating member 510 into and out of the testing section 131 through the second through hole 730.

In some embodiments, after the rotating member 510 enters the test section 131, the end of the second pulling force assembly 133 away from the rotating member 510 can be detachably connected to the external environment so as to pull the rotating member 510.

In some embodiments, the second pulling member 133 may be provided with a power source such as a pulling machine, so that the second pulling member 133 drives the rotating member 510, so that the rotating member 510 enters and exits the testing section 131 through the second through hole 730.

In some embodiments, the second pulling force assembly 133 is sleeved with a fourth sleeve 240, the fourth sleeve 240 is connected with the second sleeve 135, and the inner annular surface of the fourth sleeve 240 is provided with a labyrinth 740 to form a labyrinth seal structure. The labyrinth seal structure can reduce the outward leakage of the gas in the second sleeve 135 to ensure that the gas pressure in the second sleeve 135 is dynamically balanced with the pressure in the test section 131, or ensure that the gas pressure in the second sleeve 135 is always greater than or equal to the pressure in the test section 131.

In some embodiments, the fourth sleeve 240 may be connected to the second sleeve 135 by a flange.

The first sleeve 134 is connected to the outside of the first through hole 720 and sleeved outside the first pulling force component 132, and at least one first air inlet channel 210 is circumferentially arranged on the first sleeve 134. The first air inlet channel 210 can be an air inlet pipe or an air inlet, and gas which is introduced through the first air inlet channel 210 and is matched with the gas pressure in the test section 131 enables the gas and the introduced gas to reach dynamic balance at the first through hole 720, or the gas pressure in the first air inlet channel 210 is greater than or equal to the pressure in the test section 131, so that the gas is effectively prevented from leaking from the first through hole 720, and the high-temperature environment where the rotating piece 510 actually works can be accurately simulated. The number of the first air inlet channels 210 can be set according to actual requirements, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or even 11 to 20.

In some embodiments, the first air inlet passage 210 is multiple and evenly distributed on the circumferential surface of the first sleeve 134. The plurality of uniformly distributed first air inlet channels 210 can make the air pressure of each part in the first sleeve 134 uniform, which is beneficial to keeping the dynamic balance between the air in the first sleeve 134 and the gas in the test section 131 at the first through hole 720, or making the air pressure in the first air inlet channel 210 greater than or equal to the pressure in the test section 131, effectively preventing the gas from leaking from the first through hole 720, and accurately simulating the high temperature environment where the rotating member 510 actually works.

The second sleeve 135 is connected to the outside of the second through hole 730 and sleeved outside the second tension assembly 133, and at least one second air inlet passage 220 is circumferentially arranged on the second sleeve 135. The second air inlet passage 220 can be an air inlet pipe or an air inlet, and the gas pressure matched with the gas pressure in the test section 131 introduced through the second air inlet passage 220 enables the gas and the introduced gas to reach dynamic balance at the second through hole 730, or the gas pressure in the second air inlet passage 220 is greater than or equal to the pressure in the test section 131, so that the gas is effectively prevented from leaking from the second through hole 730, and the high-temperature environment where the rotating piece 510 actually works can be accurately simulated. The number of the second air inlet passages 220 can be set according to actual requirements, such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or even 11-20.

In some embodiments, the second air inlet passage 220 is multiple and evenly distributed on the circumferential surface of the second sleeve 135. The plurality of uniformly distributed second air inlet channels 220 can make the air pressure of each part in the second sleeve 135 more uniform, which is beneficial to keeping the dynamic balance between the air in the second sleeve 135 and the gas in the test section 131 at the second through hole 730, or making the air pressure in the first air inlet channel 210 be greater than or equal to the pressure in the test section 131, effectively preventing the gas from leaking from the second through hole 730, and accurately simulating the high temperature environment where the rotating member 510 actually works.

Some embodiments of the present disclosure are further described below in conjunction with fig. 3, 4, and 5.

In some embodiments, as shown in fig. 3, the test section 131 is provided with at least one simulation member 310 conforming to the shape and structure of the body end 512 at two opposite sides of the body end 512 in the transverse direction, respectively, so as to simulate the working environment in which the body end 512 is actually located. Wherein, the transverse direction refers to a horizontal direction perpendicular or substantially perpendicular to the length direction of the first tension assembly 132 and/or the second tension assembly 133, and the horizontal direction is perpendicular or substantially perpendicular to the gas inlet direction; substantially perpendicular means that both directions can vary within a range of 90 ° ± 5 °; the transverse direction may be referred to as the direction C, D indicated by the arrow in fig. 3.

In some embodiments, as shown in fig. 5, the rotating member 510 includes a first connecting section 511, a body end 512, and a second connecting section 513 in that order. As shown in fig. 4 and 5, the first tension assembly 132 is connected to the first connecting section 511, and the second tension assembly 133 is connected to the second connecting section 513.

In some embodiments, the first connection section 511, the body end 512, and the second connection section 513 are integrally formed.

In some embodiments, as shown in FIG. 4, the first pulling force assembly 132 is removably coupled to the rotating member 510 by a latch 560. In other embodiments, the first pulling force assembly 132 is mortise and tenon connected to the rotating member 510.

In some embodiments, as shown in fig. 5, a protrusion 540 extends from an end of the first pulling force assembly 132 facing the rotating member 510, an attachment rod 550 is connected to an end of the rotating member 510 facing the first pulling force assembly 132, the protrusion 540 is provided with a first positioning hole 541 therethrough, the attachment rod 550 is provided with a groove 551 matching the protrusion 540, a second positioning hole 552 is provided through the groove 551 at a position corresponding to the first positioning hole 541, when the protrusion 540 is inserted into the groove 551, the first positioning hole 541 communicates with the second positioning hole 552 and forms a connection hole, the connection hole is provided with a pin 560, and the protrusion 540 is detachably connected to the attachment rod 550 through the pin 560.

In some embodiments, the connecting rod 550 may be integrally formed with the rotating member 510.

In some embodiments, the length of the latch 560 is perpendicular to the length of the first tension assembly 132.

In some embodiments, there are at least 2 latches 560. At least 2 pins 560 may prevent the first pulling member 132 and the rotating member 510 from rotating, such as 2, 3, 4, 5, 6 pins 560 that are parallel to each other.

In some embodiments, the second pulling force assembly 133 is removably coupled to the rotating member 510 by a latch 560. In other embodiments, the second pulling force assembly 133 is mortise and tenon connected to the rotating member 510.

In some embodiments, a tenon 520 is disposed at an end of the rotating member 510 away from the first pulling force assembly 132, a mortise 530 is disposed in the second pulling force assembly 133 and is adapted to the tenon 520, and the second pulling force assembly 133 is connected to the rotating member 510 through the tenon 520 and the mortise 530.

In some embodiments, the tenon 520 may be integrally formed with the rotating member 510.

FIG. 6 is a schematic partial cross-sectional view at A-A of an apparatus for testing rotating members in a high temperature environment as contemplated in some embodiments of the present description.

Some embodiments of the present description are further described below in conjunction with fig. 6 and 7.

In some embodiments, as shown in fig. 6, the trial 131 includes a front end channel 610 and a back end channel 620. The front end passage 610 is communicated with the rear end passage 620, an included angle is formed between the front end passage 610 and the rear end passage 620 in the axial direction, and the first through hole 720 and the second through hole 730 are arranged at the communication position of the front end passage 610 and the rear end passage 620.

In some embodiments, the included angle is determined from the included angle between a tangent to one end of the mean camber line and a tangent to the other end of the mean camber line in the cross-section of the central portion of the rotating member 510.

As shown in fig. 6, an arrow E is an entering direction of the high-temperature gas, an arrow F is an exhausting direction of the high-temperature gas, an included angle G is an included angle between the arrow E and the arrow F, is also an included angle formed by the axial directions of the front end passage 610 and the rear end passage 620, and is also a deflection angle of the high-temperature gas after the rotating member 510 performs work. The extensions of the arrows E and F may be considered to be tangents to both ends of the mean camber line in the cross section of the middle portion of the rotation member 510.

In practical application, the included angle G can be determined according to the specific structure and installation position of the rotating member 510 to be tested and according to the design requirements of the above scheme; that is, the sizes of the included angles G corresponding to the rotating members 510 with different shapes and sizes are different, and the sizes of the included angles G corresponding to the rotating members 510 installed at different positions are also different. The included angle is allowed to have errors of +/-1-5 degrees during determination. In some embodiments, the included angle G may range from 20 ° to 70 °, and specific angles may be 20 °, 25 °, 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, 65 °, 70 °.

It should be noted that, in an actual working environment, after the high-temperature gas enters the test section 131, the inventor finds that work is applied to the rotating member 510, the work is converted into kinetic energy for rotating the rotating member 510, and after the work is applied to the high-temperature gas, the flow direction of the high-temperature gas is deflected. During the test, if there is no included angle between the front end channel 610 and the rear end channel 620, the high temperature gas directly impacts the inner wall of the test section 131 after turning, and a strong ablation effect is formed on the inner wall of the test section 131, so that the service life of the experimental equipment is seriously shortened, and a great safety risk and a great test cost are brought to the test.

In the above embodiment, by setting the included angle G, after the high-temperature gas impacts the rotating member 510, the flow direction of the high-temperature gas deflects toward the outlet of the test section 131 and is discharged along the length direction of the rear end channel 620, so that the high-temperature gas is effectively prevented from impacting the inner wall of the test section 131, the ablation condition of the inner wall of the test section 131 is greatly relieved, the service life of the test section 131 can be greatly prolonged, and the experiment risk and the experiment cost are effectively reduced; and can also cooperate with exhaust section 150 to use, can reduce the dwell time of high temperature gas at rear end passageway 620, more further alleviate the condition of ablating the inner wall of test section 131.

As shown in fig. 7, the middle of the rotary member 510 means: a central line I between both ends of the rotation member 510 in the longitudinal direction extends to the both ends by 5% of the length of the rotation member 510, respectively, to form a region H. In some embodiments, the middle portion of the rotating member 510 may particularly designate a 50% length position in the length direction of the rotating member 510.

The cross-section of the middle of the rotating member 510 means: in the region H, and in a direction parallel to the length direction of the center line I, the rotating member 510 is sectioned, and a cross section of the middle portion of the rotating member 510 is obtained.

The mean camber line in the cross-section of the middle portion of the rotating member 510 refers to: in the cross section, the middle points of the two ends of the rotating member 510 in the width direction are used as end points, the arc direction of the rotating member 510 is used as an arc line, and the obtained arc line segment is the middle arc line.

The tangents at both ends of the mean camber line in the cross section of the middle portion of the rotary member 510 refer to: the two ends of the mean camber line are respectively extended outwards to obtain rays which are tangent lines of the two ends of the mean camber line.

FIG. 9 is a schematic partial cross-sectional view at B-B of an apparatus for testing a rotating member in a high temperature environment as contemplated in some embodiments of the present description.

Some embodiments of the present description are further described below in conjunction with fig. 8 and 9.

As shown in fig. 8 and 9, the first through hole 720 and the second through hole 730 can facilitate the rotating member 510 to enter and exit the testing section 131 in a linear direction, and the linear direction is perpendicular or substantially perpendicular to the flowing direction of the fuel gas in the fuel gas channel, so as to facilitate accurate simulation of the high temperature environment in which the rotating member 510 is located in actual operation. By substantially perpendicular is meant that the linear direction and the flow direction of the gas in the gas channel may vary within the range of 90 ° ± 5 °.

In some embodiments, the liquid cooling passages 710 may be the cooling section 140 or a portion of the cooling section 140.

In some embodiments, the liquid cooling channel 710 is connected to the cooling section 140, and the cooling medium of the cooling section 140 enters the liquid cooling channel 710 through the liquid inlet pipe 250 and exits from the liquid outlet pipe 260.

In some embodiments, the cooling medium in the liquid cooling channel 710 may be water. The water used as the cooling medium can be normal-temperature water or liquid cooling water which is cooled to be close to zero.

In some embodiments, the cooling medium in the liquid cooling channels 710 may be a liquid with a freezing point lower than that of water. In other embodiments, the cooling medium in the liquid cooling channel 710 may be cutting fluid commonly used in machine tool cooling systems. The lowest possible freezing point and heat exchange capacity need to be considered when selecting the cooling medium.

As shown in fig. 10, the air pressure source 136 is at least one first air intake passage 210 and/or at least one second air intake passage 220 and provides an air pressure greater than or equal to the ambient pressure within the test section 131.

In some embodiments, the air pressure source 136 is coupled to the at least one first air intake passage 210 and/or the at least one second air intake passage 220 and provides an air pressure that matches the high temperature environment within the test section 131. The gas pressure source 136 feeds gas matched with the gas pressure in the test section 131 to the first sleeve 134 and/or the second sleeve 135 through the first gas inlet channel 210 and/or the second gas inlet channel 220, so that the gas is effectively prevented from leaking from the first through hole 720 and/or the second through hole 730. The air pressure matching the high temperature environment in the test section 131 refers to: the gas pressure of the gas pressure source 136 introduced into the first sleeve 134 and/or the second sleeve 135 is dynamically balanced with the gas pressure of the high temperature environment in the test section 131, allowing for a 5% error. Or the pressure of the cooling gas introduced into the first sleeve 134 and/or the second sleeve 135 is greater than or equal to the pressure in the test section 131

In some embodiments, the air pressure source 136 may be the pressure source 110 or a portion of the pressure source 110.

In some embodiments, the gas pressure source 136 is connected to the cooling section 140, and the cooling section 140 is connected to at least one first gas inlet channel 210 and/or at least one second gas inlet channel 220, so that the gas pressure of the cooling gas introduced into the first sleeve 134 and/or the second sleeve 135 by the cooling section 140 is dynamically balanced with the gas pressure of the high-temperature environment in the test section 131; the dynamically balanced air pressure allows for a 5% error. Or the pressure of the cooling gas introduced into the first sleeve 134 and/or the second sleeve 135 is greater than or equal to the pressure in the test section 131.

The above-described embodiments are intended to be illustrative, not limiting, of the invention, and therefore, variations of the example values or substitutions of equivalent elements are intended to be within the scope of the invention.

From the above detailed description, it will be apparent to those skilled in the art that the foregoing objects and advantages of the invention are achieved and are in accordance with the provisions of the patent statutes.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention. The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

It should be noted that the above description of the flow is for illustration and description only and does not limit the scope of the application of the present specification. Various modifications and alterations to the flow may occur to those skilled in the art, given the benefit of this description. However, such modifications and variations are intended to be within the scope of the present description.

Having thus described the basic concepts, it will be apparent to those of ordinary skill in the art having read this application that the foregoing disclosure is to be construed as illustrative only and is not limiting of the application. Various modifications, improvements and adaptations of the present application may occur to those skilled in the art, although they are not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, the present application uses specific words to describe embodiments of the application. For example, "one embodiment," "an embodiment," and/or "some embodiments" mean a certain feature, structure, or characteristic described in connection with at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Additionally, the order in which elements and sequences of the processes described herein are processed, the use of alphanumeric characters, or the use of other designations, is not intended to limit the order of the processes and methods described herein, unless explicitly claimed. While various presently contemplated embodiments of the invention have been discussed in the foregoing disclosure by way of example, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements that are within the spirit and scope of the embodiments herein. For example, although an implementation of the various components described above may be embodied in a hardware device, it may also be implemented as a pure software solution, e.g., installed on an existing server or mobile device.

Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed subject matter requires more features than are expressly recited in each claim. Rather, the inventive body should possess fewer features than the single embodiment described above.

Claims

1. An apparatus for testing a rotating member in a high temperature environment, comprising:

2. The apparatus of claim 1, wherein a pressure sensor is disposed within the test section for transmitting a pressure signal to the air pressure source to dynamically adjust air pressure.

3. The apparatus of claim 1, wherein the first air inlet passage has a plurality of air inlet passages uniformly distributed on a circumferential surface of the first sleeve; the second air inlet channels are distributed on the circumferential surface of the second sleeve uniformly.

4. The device of claim 1, wherein the test segment is fan-shaped in cross-section.

5. The apparatus of claim 1, wherein the rotary member includes a first connecting section, a body end, and a second connecting section in this order, the first tensile member is connected to the first connecting section, the second tensile member is connected to the second connecting section, and the test section is provided with at least one simulation member conforming to the shape and structure of the body end on opposite sides of the body end in the transverse direction, respectively, to simulate an operating environment in which the body end is actually located.

6. The device of claim 1, wherein the test section comprises a front end channel and a rear end channel, the front end channel is communicated with the rear end channel, the axial direction of the front end channel and the axial direction of the rear end channel form an included angle, and the first through hole and the second through hole are arranged at the communication part of the front end channel and the rear end channel.

7. The apparatus of claim 6, wherein the included angle is determined based on an included angle between a tangent at one end of a mean camber line and a tangent at the other end of the mean camber line in a cross-section of the central portion of the rotating member.

8. The apparatus of claim 1, wherein the first pulling force assembly is removably coupled to the rotating member via a pin, and the second pulling force assembly is mortise and tenon coupled to the rotating member; or

9. The apparatus of claim 1, wherein the first pulling force assembly is removably coupled to the rotating member via a latch, and the second pulling force assembly is removably coupled to the rotating member via a latch; or

10. The device as claimed in claim 1, wherein the first tension assembly is sleeved with a third sleeve, the third sleeve is connected with the first sleeve, and the inner annular surface of the third sleeve is provided with a labyrinth so as to form a labyrinth sealing structure; and/or