CN106918436A - A kind of pore pressure force probe of round platform four is combed - Google Patents
A kind of pore pressure force probe of round platform four is combed Download PDFInfo
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Abstract
本发明属于压力测试技术领域，公开了一种圆台四孔压力探针梳，包含探头、支杆、引压管，探头是头部为圆台的圆柱体，数量根据测量要求确定，至少3个，分别固定在支杆不同展向测量位置，探头的圆台顶面中心和侧面各开有1个、3个压力感受孔，4个感受孔分别与封装在探头内的4根引压管连通，支杆内部开有通道，引压管的另一端经支杆内的通道，由探针尾部引出。本发明经过校准风洞标定，能同时测得多个空间位置来流的总压、静压、偏转角、俯仰角和马赫数，适用于测量跨音速涡轮进口、出口三维流场参数沿叶片高度方向的分布。与现有测量三维流场的压力探针相比，能同时测得多个空间位置来流参数，最大程度地缩短测量时间，降低试验成本。
The invention belongs to the technical field of pressure testing, and discloses a round platform four-hole pressure probe comb, which includes a probe, a support rod, and a pressure introduction tube. The probe is a cylinder whose head is a round platform. The number is determined according to the measurement requirements, at least three They are respectively fixed at different spanwise measurement positions of the support rod. There are 1 and 3 pressure sensing holes in the center and side of the round platform of the probe respectively. A channel is opened inside, and the other end of the pressure induction tube is led out from the tail of the probe through the channel in the support rod. The invention can measure the total pressure, static pressure, deflection angle, pitch angle and Mach number of multiple spatial positions at the same time through the calibration of the wind tunnel, and is suitable for measuring the three-dimensional flow field parameters of the inlet and outlet of the transonic turbine along the height of the blade direction distribution. Compared with the existing pressure probe for measuring the three-dimensional flow field, it can simultaneously measure the flow parameters at multiple spatial positions, shorten the measurement time to the greatest extent, and reduce the test cost.
Description
技术领域technical field
本发明属于压力测试技术领域，涉及三维流场压力测量装置，具体涉及一种圆台四孔压力探针梳，适用于测量跨音速涡轮进口、出口三维流场来流俯仰角、偏转角、总压、静压和马赫数沿叶片高度方向的分布。The invention belongs to the technical field of pressure testing, and relates to a three-dimensional flow field pressure measuring device, in particular to a four-hole pressure probe comb on a circular platform, which is suitable for measuring the pitch angle, deflection angle, and total pressure of the three-dimensional flow field at the inlet and outlet of a transonic turbine. , static pressure and Mach number distribution along the blade height direction.
与现有的测量三维流场的压力探针相比，不需借助探针位移机构，改变测点位置，能在瞬时完成跨音速涡轮进口、出口三维流场来流俯仰角、偏转角、总压、静压和马赫数沿叶高方向分布的测量，并降低试验成本。Compared with the existing pressure probes for measuring the three-dimensional flow field, it does not need to use the probe displacement mechanism to change the position of the measuring point, and can instantaneously complete the three-dimensional flow field at the inlet and outlet of the transonic turbine. Measurement of the pressure, static pressure and Mach number distribution along the blade height direction, and reduce the test cost.
背景技术Background technique
跨音速涡轮实验经常需要测量进口、出口三维流场参数，包括来流俯仰角、偏转角、总压、静压和马赫数等沿叶片高度方向的分布，目前一般采用四孔或五孔压力探针，借助探针位移机构带动探针到不同的叶高位置，分别测量，由于是单点测量，需要移动探针，才能完成多点测量，实验测量时间较长，实验成本较高。Transonic turbine experiments often need to measure the three-dimensional flow field parameters at the inlet and outlet, including the distribution of incoming flow pitch angle, deflection angle, total pressure, static pressure, and Mach number along the blade height direction. At present, four-hole or five-hole pressure probes are generally used. Needle, with the help of the probe displacement mechanism to drive the probe to different leaf height positions, and measure separately. Since it is a single-point measurement, the probe needs to be moved to complete multi-point measurement. The experimental measurement time is longer and the experimental cost is higher.
而在一些跨音速涡轮试验中，由于有效的试验时间短，只有短短几分钟，甚至几秒钟，采用现有的压力探针无法在几秒钟时间内完成试验件进口、出口三维流场参数沿叶高方向分布的测量。In some transonic turbine tests, due to the short effective test time, only a few minutes or even a few seconds, the three-dimensional flow field at the inlet and outlet of the test piece cannot be completed in a few seconds with the existing pressure probe. A measure of the distribution of parameters along the leaf height.
发明内容Contents of the invention
本发明要解决的技术问题是：针对现有的压力探针无法在几秒钟时间内完成跨音速涡轮试验件进口、出口三维流场参数沿叶高方向分布测量的问题，发明一种圆台四孔压力探针梳，与现有的压力探针相比，能同时测得多个空间位置来流参数，可最大程度地缩短测量时间，完成跨音速涡轮试验件进口、出口三维流场来流俯仰角、偏转角、总压、静压和马赫数沿叶高方向分布的测量，降低试验成本。The technical problem to be solved by the present invention is: Aiming at the problem that the existing pressure probe cannot complete the measurement of the three-dimensional flow field parameters of the inlet and outlet of the transonic turbine test piece along the blade height direction within a few seconds, a round table four The hole pressure probe comb, compared with the existing pressure probe, can simultaneously measure the flow parameters of multiple spatial positions, which can shorten the measurement time to the greatest extent, and complete the three-dimensional flow field flow at the inlet and outlet of the transonic turbine test piece The measurement of pitch angle, deflection angle, total pressure, static pressure and Mach number distribution along the blade height direction reduces the test cost.
本发明的技术解决方案是：Technical solution of the present invention is:
1、一种圆台四孔压力探针梳，其特征在于：包含探头(1)、支杆(2)、引压管(3)，所述探头(1)是头部为圆台的圆柱体，数量根据测量要求确定，至少有3个，根据测量位置要求，分别固定在支杆(2)不同展向测量位置上，在探头(1)的圆台顶面中心开有1个压力感受孔，为中孔(4)，在探头(1)的圆台侧面上沿圆周均匀开有3个压力感受孔，分别为上孔(5)、左孔(6)、右孔(7)，中孔(4)、上孔(5)的中心线在一个平面上，左孔(6)、右孔(7)沿该平面对称分布，每个压力感受孔与一根引压管(3)封装在探头(1)内的一端独自连通，支杆(2)内部开有通道，各引压管(3)的另一端经支杆(2)内的通道，由探针尾部引出。1. A round platform four-hole pressure probe comb is characterized in that: it comprises a probe (1), a pole (2), and a pressure introduction tube (3), and the probe (1) is a cylinder whose head is a round platform, The quantity is determined according to the measurement requirements, and there are at least three. According to the measurement position requirements, they are respectively fixed on different spanwise measurement positions of the support rod (2), and a pressure sensing hole is opened in the center of the top surface of the round table of the probe (1), for In the middle hole (4), there are three pressure sensing holes uniformly opened along the circumference on the side of the round table of the probe (1), which are respectively the upper hole (5), the left hole (6), the right hole (7), and the middle hole (4 ), the center line of the upper hole (5) is on a plane, the left hole (6) and the right hole (7) are symmetrically distributed along the plane, and each pressure sensing hole is packaged with a pressure induction tube (3) in the probe (1 ) is connected independently, and there is a channel inside the support rod (2), and the other end of each pressure-inducing tube (3) is led out from the tail of the probe through the passage in the support rod (2).
2、进一步，探头(1)圆台顶面直径为0.4毫米至1.5毫米，底面直径为1.5毫米至6毫米。2. Further, the diameter of the top surface of the round platform of the probe (1) is 0.4 mm to 1.5 mm, and the diameter of the bottom surface is 1.5 mm to 6 mm.
3、进一步，探头(1)圆台的圆锥角为30°至100°。3. Further, the cone angle of the round table of the probe (1) is 30° to 100°.
4、进一步，中孔(4)、上孔(5)、左孔(6)、右孔(7)直径为0.2毫米至1毫米。4. Further, the diameters of the middle hole (4), the upper hole (5), the left hole (6), and the right hole (7) are 0.2 mm to 1 mm.
5、进一步，中孔(4)与探针梳支杆(2)前缘的距离为2毫米至20毫米。5. Further, the distance between the middle hole (4) and the front edge of the probe comb rod (2) is 2 mm to 20 mm.
6、进一步，引压管(3)直径为0.2毫米至1毫米。6. Further, the diameter of the pressure induction pipe (3) is 0.2 mm to 1 mm.
7、进一步，支杆(2)可以为前后倒圆的长方体，圆外径为2毫米至10毫米。7. Further, the support rod (2) can be a cuboid with front and rear rounding, and the outer diameter of the circle is 2 mm to 10 mm.
8、进一步，支杆(2)可以为尖劈柱体，尖劈顶角为20°至90°。8. Further, the support rod (2) can be a wedged cylinder with a wedge angle of 20° to 90°.
本发明的有益效果是：The beneficial effects of the present invention are:
本发明经过校准风洞标定，能同时测得多个空间位置来流的总压、静压、俯仰角、偏转角和马赫数，适用于测量跨音速涡轮进口、出口三维流场来流参数沿叶片高度方向的分布。与现有的测量三维流场的压力探针相比，能同时测得多个空间位置来流参数，可最大程度地缩短测量时间，完成叶片排进口、出口三维流场参数沿叶高方向分布的测量，降低试验成本。The invention can measure the total pressure, static pressure, pitch angle, deflection angle and Mach number of the incoming flow at multiple spatial positions at the same time through the calibration of the wind tunnel, and is suitable for measuring the incoming flow parameters of the three-dimensional flow field at the inlet and outlet of the transonic turbine along the Distribution in the direction of blade height. Compared with the existing pressure probes for measuring the three-dimensional flow field, it can measure the flow parameters at multiple spatial positions at the same time, which can shorten the measurement time to the greatest extent, and complete the distribution of the three-dimensional flow field parameters at the blade inlet and outlet along the blade height direction. measurement, reducing the cost of testing.
附图说明Description of drawings
图1是本发明的实施例一中的一种圆台四孔压力探针梳的结构示意图。Fig. 1 is a schematic structural view of a circular platform four-hole pressure probe comb in Embodiment 1 of the present invention.
图2是图1的右视图。Fig. 2 is a right side view of Fig. 1 .
图3是图2的A向剖视图。Fig. 3 is a cross-sectional view taken along line A of Fig. 2 .
图4是图2中Ⅰ的局部放大图。Fig. 4 is a partially enlarged view of I in Fig. 2 .
图5是本发明的实施例二中的一种圆台四孔压力探针梳的结构示意图。Fig. 5 is a schematic structural view of a four-hole pressure probe comb with a circular platform in Embodiment 2 of the present invention.
图6是图5的右视图。FIG. 6 is a right side view of FIG. 5 .
图7是图6的A向剖视图。Fig. 7 is a cross-sectional view taken along line A of Fig. 6 .
图8是图6中Ⅱ的局部放大图。Fig. 8 is a partially enlarged view of II in Fig. 6 .
其中：1-探头，2-支杆，3-引压管，4-中孔，5-上孔，6-左孔，7-右孔。Among them: 1-probe, 2-support rod, 3-pressure introduction tube, 4-middle hole, 5-upper hole, 6-left hole, 7-right hole.
具体实施方式detailed description
下面结合附图和具体实施例对本发明进行详细阐述。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
实施例一Embodiment one
如图1所示，本实施例中介绍了一种圆台四孔压力探针梳，包含探头(1)、支杆(2)、引压管(3)，探头(1)是头部为圆台的圆柱体，数量根据测量要求确定为5个，根据测量位置要求，分别固定在支杆(2)不同展向测量位置上，在探头(1)的圆台顶面中心开有1个压力感受孔，为中孔(4)，在探头(1)的圆台侧面上沿圆周均匀开有3个压力感受孔，分别为上孔(5)、左孔(6)、右孔(7)，中孔(4)、上孔(5)的中心线在一个平面上，左孔(6)、右孔(7)沿该平面对称分布，每个压力感受孔与一根引压管(3)封装在探头(1)内的一端独自连通，支杆(2)内部开有通道，各引压管(3)的另一端经支杆(2)内的通道，由探针尾部引出。As shown in Figure 1, a circular table four-hole pressure probe comb is introduced in this embodiment, including a probe (1), a support rod (2), and a pressure introduction tube (3). The head of the probe (1) is a circular table The number of cylinders is determined to be 5 according to the measurement requirements. According to the measurement position requirements, they are respectively fixed on different spanwise measurement positions of the support rod (2), and a pressure sensing hole is opened in the center of the top surface of the round table of the probe (1). , which is the middle hole (4), on the side of the round platform of the probe (1), there are three pressure sensing holes evenly along the circumference, which are respectively the upper hole (5), the left hole (6), the right hole (7), and the middle hole (4), the center line of the upper hole (5) is on a plane, the left hole (6) and the right hole (7) are distributed symmetrically along the plane, and each pressure sensing hole is packaged with a pressure induction tube (3) in the probe One end in (1) communicates independently, and there is a channel inside the support rod (2), and the other end of each pressure-inducing tube (3) passes through the channel in the support rod (2), and is drawn out from the tail of the probe.
探头(1)圆台顶面直径为0.5毫米，底面直径为3毫米。The diameter of the top surface of the probe (1) is 0.5 millimeters, and the diameter of the bottom surface is 3 millimeters.
探头(1)圆台的圆锥角为80°。The cone angle of the probe (1) round table is 80°.
中孔(4)、上孔(5)、左孔(6)、右孔(7)直径为0.5毫米。Middle hole (4), upper hole (5), left hole (6), right hole (7) diameter is 0.5 millimeter.
中孔(4)与探针梳支杆(2)前缘的距离为8毫米。The distance between the middle hole (4) and the front edge of the probe comb pole (2) is 8 millimeters.
引压管(3)直径为0.5毫米。The diameter of the pressure introduction pipe (3) is 0.5 mm.
支杆(2)为前后倒圆的长方体，圆外径为10毫米，两圆心距离为11毫米。Strut (2) is the rectangular parallelepiped of front and rear rounding, and circle outer diameter is 10 millimeters, and the distance between two circle centers is 11 millimeters.
本发明经过校准风洞标定，能同时测得多个空间位置来流的总压、静压、俯仰角、偏转角和马赫数，适用于测量跨音速涡轮进口、出口亚音速三维流场来流参数沿叶片高度方向的分布。The invention can measure the total pressure, static pressure, pitch angle, deflection angle and Mach number of multiple space positions at the same time after being calibrated by the wind tunnel, and is suitable for measuring the incoming flow of the subsonic three-dimensional flow field at the inlet and outlet of a transonic turbine The distribution of parameters along the blade height direction.
实施例二Embodiment two
如图5所示，本实施例中介绍了一种圆台四孔压力探针梳，包含探头(1)、支杆(2)、引压管(3)，探头(1)是头部为圆台的圆柱体，数量根据测量要求确定为5个，根据测量位置要求，分别固定在支杆(2)不同展向测量位置上，在探头(1)的圆台顶面中心开有1个压力感受孔，为中孔(4)，在探头(1)的圆台侧面上沿圆周均匀开有3个压力感受孔，分别为上孔(5)、左孔(6)、右孔(7)，中孔(4)、上孔(5)的中心线在一个平面上，左孔(6)、右孔(7)沿该平面对称分布，每个压力感受孔与一根引压管(3)封装在探头(1)内的一端独自连通，支杆(2)内部开有通道，各引压管(3)的另一端经支杆(2)内的通道，由探针尾部引出。As shown in Figure 5, a circular table four-hole pressure probe comb is introduced in this embodiment, which includes a probe (1), a support rod (2), and a pressure tube (3). The probe (1) has a circular table head The number of cylinders is determined to be 5 according to the measurement requirements. According to the measurement position requirements, they are respectively fixed on different spanwise measurement positions of the support rod (2), and a pressure sensing hole is opened in the center of the top surface of the round table of the probe (1). , which is the middle hole (4), on the side of the round platform of the probe (1), there are three pressure sensing holes evenly along the circumference, which are respectively the upper hole (5), the left hole (6), the right hole (7), and the middle hole (4), the center line of the upper hole (5) is on a plane, the left hole (6) and the right hole (7) are distributed symmetrically along the plane, and each pressure sensing hole is packaged with a pressure induction tube (3) in the probe One end in (1) communicates independently, and there is a channel inside the support rod (2), and the other end of each pressure-inducing tube (3) passes through the channel in the support rod (2), and is drawn out from the tail of the probe.
探头(1)圆台顶面直径为0.5毫米，底面直径为3毫米。The diameter of the top surface of the probe (1) is 0.5 millimeters, and the diameter of the bottom surface is 3 millimeters.
探头(1)圆台的圆锥角为30°。The cone angle of the probe (1) round table is 30°.
中孔(4)、上孔(5)、左孔(6)、右孔(7)直径为0.5毫米。Middle hole (4), upper hole (5), left hole (6), right hole (7) diameter is 0.5 millimeter.
中孔(4)与探针梳支杆(2)前缘的距离为6毫米。The distance between the middle hole (4) and the front edge of the probe comb pole (2) is 6 millimeters.
引压管(3)直径为0.5毫米。The diameter of the pressure introduction pipe (3) is 0.5 mm.
支杆(2)为尖劈柱体，尖劈顶角为30°。Strut (2) is a wedge-splitting cylinder, and the wedge-splitting apex angle is 30°.
本发明经过校准风洞标定，能同时测得多个空间位置来流的总压、静压、俯仰角、偏转角和马赫数，适用于测量跨音速涡轮进口、出口超音速三维流场来流参数沿叶片高度方向的分布。The invention can measure the total pressure, static pressure, pitch angle, deflection angle and Mach number of the incoming flow at multiple spatial positions at the same time through the calibration of the wind tunnel, and is suitable for measuring the incoming flow of the supersonic three-dimensional flow field at the inlet and outlet of a transonic turbine The distribution of parameters along the blade height direction.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113156172A (en) * | 2021-04-20 | 2021-07-23 | 核工业西南物理研究院 | Multi-step electrostatic probe |
| CN115420460A (en) * | 2022-09-28 | 2022-12-02 | 哈尔滨工业大学 | Four-hole super transonic probe without test calibration |
| CN115615612A (en) * | 2022-09-28 | 2023-01-17 | 哈尔滨工业大学 | A kind of supersonic probe and its calibration method |
| CN115824572A (en) * | 2022-12-20 | 2023-03-21 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Wind tunnel dynamic pressure measuring device and measuring method |
| CN119223472A (en) * | 2024-09-20 | 2024-12-31 | 北京航空航天大学 | A dynamic total temperature probe comb for measuring unsteady flow fields using thin film platinum resistors |
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| CN113156172B (en) * | 2021-04-20 | 2022-07-29 | 核工业西南物理研究院 | A multi-step electrostatic probe probe |
| CN115420460A (en) * | 2022-09-28 | 2022-12-02 | 哈尔滨工业大学 | Four-hole super transonic probe without test calibration |
| CN115615612A (en) * | 2022-09-28 | 2023-01-17 | 哈尔滨工业大学 | A kind of supersonic probe and its calibration method |
| CN115420460B (en) * | 2022-09-28 | 2025-05-16 | 哈尔滨工业大学 | A four-hole supersonic probe without experimental calibration |
| CN115824572A (en) * | 2022-12-20 | 2023-03-21 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Wind tunnel dynamic pressure measuring device and measuring method |
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