CN112945560B - Flow field parameter measuring device and method thereof - Google Patents
Flow field parameter measuring device and method thereof Download PDFInfo
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- CN112945560B CN112945560B CN202110153395.9A CN202110153395A CN112945560B CN 112945560 B CN112945560 B CN 112945560B CN 202110153395 A CN202110153395 A CN 202110153395A CN 112945560 B CN112945560 B CN 112945560B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The application belongs to the technical field of flow field parameter measurement, concretely relates to flow field parameter measurement device, include: a strut; the porous direction probe is connected to the support rod and can rotate relative to the support rod; the total pressure measuring head with the cover is integrated on the multi-hole direction probe, and the measuring head direction of the total pressure measuring head is consistent with the probe direction of the multi-hole direction probe. In addition, the flow field parameter measuring method is implemented based on the flow field parameter measuring device.
Description
Technical Field
The application belongs to the technical field of flow field parameter measurement, and particularly relates to a flow field parameter measurement device and a method thereof.
Background
When the total pressure and the speed of the tail jet flow of the engine are measured, the angle of a total pressure instrument and the angle of a speed instrument are required to be fixed to be consistent with the airflow direction of the tail jet flow of the engine in order to ensure the measurement accuracy.
At present, when total pressure and speed of engine tail jet flow are measured, a total pressure instrument and a speed instrument are fixed according to the airflow direction of the engine tail jet flow obtained through theoretical calculation, however, due to the fact that the calculation theory is imperfect and interference of surrounding actual objects or flow fields occurs, the airflow direction of the engine tail jet flow obtained through theoretical calculation has a certain degree of deviation from the actual airflow direction, and when the deviation is large, accurate measurement results of the total pressure and the speed of the engine tail jet flow are difficult to obtain based on the technical scheme.
The present application has been made in view of the above-mentioned technical drawbacks.
It should be noted that the above background disclosure is only used for assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is already disclosed at the filing date of the present application.
Disclosure of Invention
It is an object of the present application to provide a flow field parameter measurement apparatus and method thereof to overcome or alleviate at least one aspect of the technical deficiencies known to exist.
The technical scheme of the application is as follows:
one aspect provides a flow field parameter measuring device, including:
a strut;
the porous direction probe is connected to the support rod and can rotate relative to the support rod;
the total pressure measuring head with the cover is integrated on the multi-hole direction probe, and the measuring head direction of the total pressure measuring head is consistent with the probe direction of the multi-hole direction probe.
According to at least one embodiment of the present application, in the flow field parameter measuring device, one end of the support rod is provided with a support hole;
the flow field parameter measuring device further comprises:
and the turntable is connected with the multi-hole direction probe, is arranged in the support hole and can rotate relative to the support rod.
According to at least one embodiment of the present application, in the flow field parameter measuring device, a scale is marked on an end surface of the support rod, which has one end with the support hole;
scales are marked on the turntable;
the probe of the multi-hole direction probe points to the zero scale on the turntable.
According to at least one embodiment of the present application, in the flow field parameter measuring device, the side wall of the strut has a locking hole; the locking hole is communicated with the supporting hole;
the flow field measurement parameters further include:
a locking screw having:
in the locking state, a locking screw is screwed in the locking hole, the top end of the locking screw is abutted against the rotary table, and the rotary table is fixed relative to the support rod;
in the unlocked state, the top end of the locking screw is separated from the rotary disc, and the rotary disc can rotate relative to the support rod.
According to at least one embodiment of the present application, in the flow field parameter measuring device, there are a plurality of locking screws and corresponding locking holes.
According to at least one embodiment of the present application, the flow field parameter measuring device further includes:
and the support table is connected with one end of the support rod.
According to at least one embodiment of the present application, in the flow field parameter measuring device, the strut is hollow inside and is communicated with the rod part of the porous direction probe;
the support table is provided with a lead channel which is communicated with the inside of the support rod so as to lead out the multi-hole direction probe and a lead wire with a cover total pressure measuring head.
According to at least one embodiment of the present application, in the flow field parameter measuring device, there are a plurality of the struts and the corresponding multi-hole direction probes and total pressure measuring heads with covers.
According to at least one embodiment of the present application, the flow field parameter measuring device further includes:
the total pressure measuring air pipe is connected to the supporting rod, can move along the axial direction of the supporting rod and rotate relative to the supporting rod.
According to at least one embodiment of the present application, the flow field parameter measuring device further includes:
a clip having:
in a hooping state, a hoop hoops the total pressure measurement air pipe on the outer wall of the support rod, and the total pressure measurement air pipe is fixed relative to the support rod;
in the non-clamped state, the clamp releases the total pressure measuring air tube, which can move axially along the strut and rotate relative to the strut.
According to at least one embodiment of the present application, in the flow field parameter measuring device, a plurality of total pressure measurement air pipes are arranged and distributed along the axial direction of the support rod.
On the other hand, a flow field parameter measuring method is provided, which is implemented based on any one of the flow field parameter measuring devices, and comprises the following steps:
placing a flow field parameter measuring device in a flow field;
each locking screw on each supporting rod is arranged in a non-locking state, the corresponding rotary disc is rotated, and the total pressure value p measured by the probe in the corresponding multi-hole direction 0 Maximum value p measured by total pressure measuring head with cover tcmax When the deviation between the two is smaller than a set threshold value, setting each corresponding locking screw to be in a locking state, recording the total pressure measurement value of each probe in the porous direction, and calculating to obtain the velocity of the fluid in the flow field;
each hoop arranged on each supporting rod is in a non-hooping state, each corresponding total pressure measurement air pipe moves to a set height along the axial direction, and rotates to the direction consistent with the direction of a probe corresponding to the multi-hole direction probe, each corresponding hoop is arranged in a hooping state, and the total pressure measurement value of each total pressure measurement air pipe at the set height is recorded.
Drawings
Fig. 1 is a schematic view of a flow field parameter measuring device provided in an embodiment of the present application;
FIG. 2 is a partial schematic view of a flow field parameter measuring device provided in an embodiment of the present application;
FIG. 3 is a top view of FIG. 2;
wherein:
1-a strut; 2-a multi-well direction probe; 3-total pressure probe with cover; 4-rotating disc; 5-locking screws; 6-supporting the platform; 7-total pressure measurement air pipe; and 8, clamping a hoop.
For the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; furthermore, the drawings are for illustrative purposes, and the terms used to describe positional relationships are merely exemplary in nature and are not to be construed as limiting the present patent.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, and other related parts may refer to general designs, and in case of conflict, the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment.
In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that devices or elements must have specific orientations, be constructed and operated in specific orientations, and that when the absolute position of an object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the description of the application should not be construed as an absolute limitation of quantity, but rather as the presence of at least one. The word "comprising" or "comprises", and the like, when used in this description, is intended to specify the presence of stated elements or items, but not the exclusion of other elements or items.
Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in the present application according to their specific situation.
The present application is described in further detail below with reference to fig. 1 to 3.
One aspect provides a flow field parameter measuring device, including:
a strut 1;
a porous direction probe 2 connected to the support rod 1 and capable of rotating relative to the support rod 1;
and the total pressure measuring head 3 with the cover is integrated on the multi-hole direction probe 2, and the measuring head direction of the total pressure measuring head is consistent with the probe direction of the multi-hole direction probe 2.
For the flow field parameter measuring device disclosed in the above embodiments, it can be understood by those skilled in the art that it can be used for measuring the total pressure and speed of the engine tail jet, and when used for measuring the total pressure and speed of the engine tail jet, it can operate according to the following steps:
a support rod 1, a multi-hole direction probe 2 and a total pressure measuring head 3 with a cover are arranged in a tail jet flow field of the engine;
the total pressure p measured at the multi-hole direction probe 2 by rotating the multi-hole direction probe 2 0 Maximum value p measured by total pressure measuring head 3 with cover tcmax When the deviation is smaller than a set threshold value, corresponding locking screws 5 are set to be in a locking state, the total pressure measurement value of the probe 2 in the porous direction is recorded, and the velocity of the fluid in the flow field is obtained through calculation.
For the flow field parameter measuring device disclosed in the above embodiment, it can be understood by those skilled in the art that the total pressure measuring head 3 with the cover is integrated on the multi-hole direction probe 2, and the measuring head direction of the total pressure measuring head is consistent with the probe direction of the multi-hole direction probe 2, and in the rotation process of the multi-hole direction probe 2, the total pressure measuring head can synchronously rotate along with the hole direction probe 2, and the measuring head direction of the total pressure measuring head is consistent with the probe direction of the multi-hole direction probe 2, because the total pressure measuring head 3 with the cover is of the structure with the cover, the insensitive angle of the measuring head is large, the total pressure data close to reality can be measured in a certain angle range, and the total pressure value p measured by the multi-hole direction probe 2 0 Maximum value p measured by total pressure measuring head 3 with cover tcmax When the deviation is less than the set threshold value, the porous block is considered to beThe direction of the probe 2 is approximately consistent with the direction of the air flow in the jet flow at the tail of the engine, and the included angle between the direction of the probe and the direction of the air flow is in the effective sensing range, so that the accurate measurement result of the total pressure and the speed of the jet flow at the tail of the engine can be obtained.
In some optional embodiments, in the above flow field parameter measuring device, the multi-hole direction probe 2 may be a spherical five-hole probe, and a distance between the probe head of the multi-hole direction probe and the measuring head of the total pressure measuring head 3 with the cover should be as small as possible, and may be located within 15-20 mm, so that total pressure laws reflected between the probe head and the measuring head are consistent.
In some optional embodiments, in the flow field parameter measuring device described above, one end of the supporting rod 1 has a supporting hole;
the flow field parameter measuring device further comprises:
and the rotating disc 4 is connected with the multi-hole direction probe 2, is arranged in the supporting hole and can rotate relative to the supporting rod 1, so that the multi-hole direction probe 2 and the total pressure measuring head 3 with the cover integrated on the multi-hole direction probe 2 can be driven to rotate relative to the supporting rod 1.
In some optional embodiments, in the flow field parameter measuring device described above, scales are marked on the end face of the strut 1 having one end with the support hole;
scales are marked on the turntable 4;
the probe head of the multi-hole direction probe 2 points to the zero scale on the turntable 4.
As will be understood by those skilled in the art, with respect to the flow field parameter measuring device disclosed in the above embodiment, through the measurement result of the multi-hole direction probe 2, the deflection angle α and the pitch angle β can be calculated, and then for the tail jet of the engine, the deflection angle pitch is α + Φ, and the pitch angle yaw is the offset angle between the zero scale on the turntable 4 and the zero scale on the end face of the support rod 1 having the support hole, and the two are aligned initially.
In some optional embodiments, in the flow field parameter measuring device, the side wall of the strut 1 is provided with a locking hole; the locking hole is communicated with the supporting hole;
the flow field measurement parameters further include:
a locking screw 5 having:
in a locking state, a locking screw 5 is screwed in the locking hole, the top end of the locking screw abuts against the rotary table 4, and the rotary table 4 is fixed relative to the support rod 1;
in the unlocked state, the top end of the locking screw 5 is separated from the rotary plate 4, and the rotary plate 4 can rotate relative to the support rod 1.
In some alternative embodiments, in the flow field parameter measuring device, there are a plurality of locking screws 5 and corresponding locking holes.
In some optional embodiments, the flow field parameter measuring device further includes:
and the support table 6 is connected with one end of the support rod 1.
In some optional embodiments, in the flow field parameter measuring device, the strut 1 is hollow inside and is communicated with the rod part of the porous direction probe 2;
the support table 6 has a lead passage communicating with the inside of the support rod 1 to lead out the porous direction probe 2 and the lead of the covered total pressure measuring head 3.
In some alternative embodiments, in the flow field parameter measuring device described above, there are a plurality of struts 1 and their corresponding multi-hole direction probes 2 and total pressure measuring heads 3 with covers.
In some optional embodiments, the flow field parameter measuring device further includes:
the total pressure measuring air pipe 7 is connected to the supporting rod 1 and can move axially along the supporting rod 1, so that the total pressure at a set height in the engine tail jet flow field can be measured by adjusting to the set height, and the total pressure measuring air pipe rotates relative to the supporting rod 1, and therefore the included angle between the total pressure measuring air pipe 7 and the airflow direction in the engine tail jet flow field can be guaranteed to be within the effective sensing range.
In some optional embodiments, the flow field parameter measuring device further includes:
the clip 8 has:
in a hooping state, the hoop 8 hoops the total pressure measurement air pipe 7 on the outer wall of the support rod 1, and the total pressure measurement air pipe 7 is fixed relative to the support rod 1;
in the non-clamped state, the clamp 8 releases the total pressure measuring air tube 7, and the total pressure measuring air tube 7 can move axially along the strut 1 and rotate relative to the strut 1.
In some alternative embodiments, in the above-mentioned flow field parameter measuring device, there are a plurality of total pressure measuring air pipes 7 distributed along the axial direction of the strut 1.
On the other hand, a flow field parameter measuring method is provided, which is implemented based on any one of the flow field parameter measuring devices, and comprises the following steps:
placing a flow field parameter measuring device in a flow field;
each locking screw 5 arranged on each supporting rod 1 is in a non-locking state, the corresponding rotary disc 4 is rotated, and the total pressure p measured by the probe 2 in the corresponding multi-hole direction 0 Maximum value p measured by total pressure measuring head 3 with cover tcmax When the deviation between the two is smaller than a set threshold value, setting each corresponding locking screw 5 to be in a locking state, recording the total pressure measurement value of each porous direction probe 2, and calculating to obtain the velocity of the fluid in the flow field;
each hoop 8 arranged on each strut 1 is in a non-hooped state, each corresponding total pressure measurement air pipe 7 is axially moved to a set height and is rotated to point in the direction consistent with the probe direction of the corresponding multi-hole direction probe 2, each corresponding hoop 8 is arranged in a hooped state, and the total pressure measurement value of each total pressure measurement air pipe 7 at the set height is recorded.
For the flow field parameter measuring method disclosed in the above embodiment, those skilled in the art can understand that the method is implemented based on the flow field parameter measuring device disclosed in the above embodiment, and specific relevant points may refer to the description of relevant parts of the flow field parameter measuring device, and the technical effect may also refer to the technical effect of relevant parts of the flow field parameter measuring device, which is not described herein again.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.
Claims (1)
1. A flow field parameter measuring method is characterized by being implemented based on a flow field parameter measuring device, and the flow field parameter measuring device comprises:
a strut (1);
a porous direction probe (2) connected to the support rod (1) and capable of rotating relative to the support rod (1);
the total pressure measuring head (3) with the cover is integrated on the multi-hole direction probe (2), and the measuring head direction of the total pressure measuring head is consistent with the probe direction of the multi-hole direction probe (2);
one end of the support rod (1) is provided with a support hole;
the flow field parameter measuring device further comprises:
a rotary disc (4) which is connected with the multi-hole direction probe (2), is arranged in the supporting hole and can rotate relative to the support rod (1);
scales are marked on the end face of one end of the supporting rod (1) with the supporting hole;
scales are marked on the rotary table (4);
the probe of the porous direction probe (2) points to the zero scale on the turntable (4);
the side wall of the strut (1) is provided with a locking hole; the locking hole is communicated with the supporting hole;
the flow field parameter measuring device further comprises:
a locking screw (5) having:
in a locking state, the locking screw (5) is screwed in the locking hole, the top end of the locking screw is abutted against the rotary disc (4), and the rotary disc (4) is fixed relative to the support rod (1);
in a non-locking state, the top end of the locking screw (5) is separated from the rotary disc (4), and the rotary disc (4) can rotate relative to the support rod (1);
a plurality of locking screws (5) and corresponding locking holes are arranged;
the support rod (1) is hollow and is communicated with the rod part of the porous direction probe (2);
the flow field parameter measuring device further comprises:
the supporting table (6) is connected with one end of the supporting rod (1) and is provided with a lead channel; the lead channel is communicated with the inside of the support rod (1) so as to lead out leads of the porous direction probe (2) and the total pressure measuring head (3) with the cover;
the support rods (1) and the corresponding porous direction probes (2) and total pressure measuring heads (3) with the covers are multiple;
the flow field parameter measuring device further comprises:
the total pressure measurement air pipes (7) are connected to the supporting rod (1) and are axially distributed along the supporting rod (1); each of the total pressure measuring air tubes (7) is axially movable along the strut (1) and rotatable relative to the strut (1);
a plurality of clips (8) having:
in a hooping state, each hoop (8) hoops a corresponding total pressure measurement air pipe (7) on the outer wall of the support rod (1), and the corresponding total pressure measurement air pipe (7) is fixed relative to the support rod (1);
in a non-clamping state, each clamping hoop (8) releases the corresponding total pressure measuring air pipe (7), and the corresponding total pressure measuring air pipe (7) can axially move along the support rod (1) and rotate relative to the support rod (1);
the flow field parameter measuring method comprises the following steps:
placing a flow field parameter measuring device in a flow field;
each locking screw (5) arranged on each supporting rod (1) is in a non-locking state, the corresponding rotary disc (4) is rotated, and the total pressure p measured by the probe (2) in the corresponding porous direction 0 The maximum value p measured by the total pressure measuring head (3) with the cover tcmax When the deviation is smaller than a set threshold value, setting each corresponding locking screw (5) to be in a locking state, recording the total pressure measurement value of each porous direction probe (2), and calculating to obtain the velocity of the fluid in the flow field;
each hoop (8) arranged on each supporting rod (1) is in a non-hooped state, each corresponding total pressure measurement air pipe (7) is axially moved to the set height of the corresponding total pressure measurement air pipe, the corresponding total pressure measurement air pipe is rotated to point to the direction consistent with the probe direction of the corresponding porous direction probe (2), each corresponding hoop (8) is arranged to be in a hooped state, and the total pressure measurement value of each total pressure measurement air pipe (7) at the set height of the corresponding total pressure measurement air pipe is recorded.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110153395.9A CN112945560B (en) | 2021-02-04 | 2021-02-04 | Flow field parameter measuring device and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110153395.9A CN112945560B (en) | 2021-02-04 | 2021-02-04 | Flow field parameter measuring device and method thereof |
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| CN112945560A CN112945560A (en) | 2021-06-11 |
| CN112945560B true CN112945560B (en) | 2022-08-19 |
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| CN114544076B (en) * | 2022-02-23 | 2024-04-09 | 中国航发沈阳发动机研究所 | Pressure measurement probe |
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| CN111337261A (en) * | 2020-01-10 | 2020-06-26 | 西北工业大学 | Rotary machine interstage and outlet total pressure probe |
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| DE102009037957A1 (en) * | 2009-08-18 | 2011-02-24 | Mtu Aero Engines Gmbh | Pressure probe |
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|---|---|---|---|---|
| CN102141447A (en) * | 2010-12-31 | 2011-08-03 | 中国航天科技集团公司第六研究院第十一研究所 | Total temperature/total pressure and static probe |
| CN104280183A (en) * | 2014-09-29 | 2015-01-14 | 南京航空航天大学 | Flow collection type comb-shaped total pressure probe |
| CN205228775U (en) * | 2015-12-15 | 2016-05-11 | 中航商用航空发动机有限责任公司 | Flow field air current collection system and flow field air current measuring equipment |
| CN107356288A (en) * | 2017-06-09 | 2017-11-17 | 同济大学 | A kind of air velocity and temperature duplex measurement device for low speed flow field |
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| CN111337261A (en) * | 2020-01-10 | 2020-06-26 | 西北工业大学 | Rotary machine interstage and outlet total pressure probe |
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