CN114544076B - Pressure measurement probe - Google Patents
Pressure measurement probe Download PDFInfo
- Publication number
- CN114544076B CN114544076B CN202210168534.XA CN202210168534A CN114544076B CN 114544076 B CN114544076 B CN 114544076B CN 202210168534 A CN202210168534 A CN 202210168534A CN 114544076 B CN114544076 B CN 114544076B
- Authority
- CN
- China
- Prior art keywords
- crimping
- measurement probe
- pressure measurement
- stepped mounting
- mounting hole
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- 239000000523 sample Substances 0.000 title claims abstract description 44
- 238000009530 blood pressure measurement Methods 0.000 title claims abstract description 43
- 238000002788 crimping Methods 0.000 claims abstract description 59
- 230000007704 transition Effects 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims 5
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- 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
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The application belongs to pressure measurement probe structural design technical field, concretely relates to pressure measurement probe includes: a support rod provided with a plurality of stepped mounting holes and crimping grooves; the compression joint groove is communicated with each stepped mounting hole; the tail part of the plurality of measuring heads is provided with a crimping bulge; the head of each measuring head passes through one stepped mounting hole; the crimping piece is clamped in the crimping groove; the connecting bolts are used for connecting the crimping pieces to the supporting rods, so that the crimping pieces press each crimping bulge, and each crimping bulge is abutted against the transition part of the corresponding stepped mounting hole; each crimping bulge is matched with a ball head conical surface between transition parts of the corresponding stepped mounting holes.
Description
Technical Field
The application belongs to the technical field of pressure measurement probe structural design, and particularly relates to a pressure measurement probe.
Background
In aeroengine tests, it relates to the measurement of the pressure in the flow channels of aeroengines and in the outlet portions of their nozzles.
At present, in the aeroengine test, adopt pressure measurement probe to measure aeroengine runner and the pressure at spray tube export position thereof more, current pressure measurement probe mainly includes gauge head, branch, and wherein, the head of gauge head is pressure measurement's direct impression position, can have a plurality ofly, and the afterbody of gauge head directly welds on branch, and branch plays the supporting role to the gauge head.
In practice, the pressure measurement probe has a large deviation between the measured value and the true value of the pressure, especially when the outlet position of the jet pipe of the aeroengine reaches supersonic speed, the deviation is remarkable, and the deviation is mainly influenced by the characteristics of the measuring head, the distribution position and the distribution angle of the measuring head, and is irrelevant to the supporting rod, so that the measuring head needs to be calibrated in a wind tunnel when in use.
The measuring head of the existing pressure measuring probe is directly welded on the supporting rod, and when the pressure measuring probe is used, the pressure measuring probe can only be used as a whole, and wind tunnel calibration is carried out on the measuring head one by one, so that a large amount of manpower and material resources can be consumed.
The present application has been made in view of the existence of the above-mentioned technical drawbacks.
It should be noted that the above disclosure of the background art is only for aiding in understanding the inventive concept and technical solution of the present invention, which is not necessarily prior art to the present application, and should not be used for evaluating the novelty and the creativity of the present application in the case where no clear evidence indicates that the above content has been disclosed at the filing date of the present application.
Disclosure of Invention
It is an object of the present application to provide a pressure measurement probe that overcomes or mitigates at least one of the technical drawbacks known to exist.
The technical scheme of the application is as follows:
a pressure measurement probe, comprising:
a support rod provided with a plurality of stepped mounting holes and crimping grooves; the compression joint groove is communicated with each stepped mounting hole;
the tail part of the plurality of measuring heads is provided with a crimping bulge; the head of each measuring head passes through one stepped mounting hole;
the crimping piece is clamped in the crimping groove;
the connecting bolts are used for connecting the crimping pieces to the supporting rods, so that the crimping pieces press each crimping bulge, and each crimping bulge is abutted against the transition part of the corresponding stepped mounting hole; each crimping bulge is matched with a ball head conical surface between transition parts of the corresponding stepped mounting holes.
According to at least one embodiment of the present application, in the pressure measurement probe, the pressure contact piece has a plurality of perforations thereon;
the pressure guiding pipe led out from the tail of each measuring head passes through one perforation.
According to at least one embodiment of the present application, in the pressure measurement probe described above, the crimp tab is divided into multiple segments;
each segment of the crimping tab has at least one perforation and at least one crimping projection is compressed.
According to at least one embodiment of the present application, in the pressure measurement probe, the angle between each mounting hole and the axis of the strut is between 75 ° and 90 °.
According to at least one embodiment of the present application, in the pressure measurement probe, the cone angle of the ball head conical surface fit between each crimping protrusion and the transition portion of the corresponding stepped mounting hole is in the range of 60 ° to 120 °.
According to at least one embodiment of the present application, the pressure measurement probe further includes:
and each gasket is correspondingly arranged between one connecting bolt and one crimping piece.
The application has at least the following beneficial technical effects:
the utility model provides a pressure measurement probe, its each gauge head of design compresses tightly, fixes on branch through the crimping piece, and the crimping piece passes through connecting bolt to be connected on branch, for dismantling the connection to this dismouting that can be convenient each gauge head on branch of realization, when using, can use the gauge head after the wind tunnel calibration with the equipment of different branches, have higher availability factor, and need not to use pressure measurement probe as whole, carry out the wind tunnel calibration to numerous gauge heads one by one, can save a large amount of manpower, material resources.
Drawings
FIG. 1 is a schematic illustration of a pressure measurement probe provided in an embodiment of the present application;
FIG. 2 is a schematic view of a partial assembly of a pressure measurement probe provided in an embodiment of the present application;
FIG. 3 is a schematic view of a gauge head provided in an embodiment of the present application;
wherein:
1-a supporting rod; 2-measuring head; 3-crimping pieces; 4-connecting bolts; 5-spacer.
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 actual product dimensions, and furthermore, the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Detailed Description
In order to make the technical solution of the present application and the advantages thereof more apparent, the technical solution of the present application will be more fully described in detail below with reference to the accompanying drawings, it being understood that the specific embodiments described herein are only some of the embodiments of the present application, which are for explanation of the present application, not for limitation of the present application. It should be noted that, for convenience of description, only the portion relevant to the present application is shown in the drawings, and other relevant portions may refer to a general design, and without conflict, the embodiments and technical features in the embodiments may be combined with each other to obtain new embodiments.
Furthermore, unless defined otherwise, technical or scientific terms used in the description of this application should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," "outer," and the like as used in this description are merely used to indicate relative directions or positional relationships, and do not imply that a device or element must have a particular orientation, be configured and operated in a particular orientation, and that the relative positional relationships may be changed when the absolute position of the object being described is changed, and thus should not be construed as limiting the present application. The terms "first," "second," "third," and the like, as used in the description herein, are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance to the various components. The use of the terms "a," "an," or "the" and similar referents in the description of the invention are not to be construed as limited in number to the precise location of at least one. As used in this description, the terms "comprises," "comprising," or the like are intended to cover an element or article that appears before the term and that is listed after the term and its equivalents, without excluding other elements or articles.
Furthermore, unless specifically stated and limited otherwise, the terms "mounted," "connected," and the like in the description herein are to be construed broadly and refer to either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements, and the specific meaning of the two elements can be understood by a person skilled in the art according to specific situations.
The present application is described in further detail below in conjunction with fig. 1-3.
A pressure measurement probe, comprising:
the support rod 1 is provided with a plurality of stepped mounting holes and crimping grooves; the compression joint groove is communicated with each stepped mounting hole;
the tail part of the measuring head 2 is provided with a crimping bulge; the head of each measuring head 2 passes through a stepped mounting hole;
a crimping piece 3 which is clamped in the crimping groove;
a plurality of connecting bolts 4 for connecting the crimping pieces 3 to the support rods 1, so that the crimping pieces 3 press each crimping protrusion, and each crimping protrusion is abutted against the transition part of the corresponding stepped mounting hole; each crimping bulge is matched with a ball head conical surface between transition parts of the corresponding stepped mounting holes.
For the pressure measurement probe disclosed in the above embodiment, it can be understood by those skilled in the art that the pressure measurement probe is designed to compress and fix each measuring head 2 on the supporting rod 1 through the compression joint piece 3, and the compression joint piece 3 is connected on the supporting rod 1 through the connecting bolt 4 for detachable connection, so that the disassembly and assembly of each measuring head 2 on the supporting rod 1 can be conveniently realized, and when in use, the measuring head 2 after wind tunnel calibration can be assembled with different supporting rods 1 for use, so that the pressure measurement probe has higher use efficiency, and the pressure measurement probe does not need to be taken as a whole, wind tunnel calibration can be performed on a plurality of measuring heads 2 one by one, and a great deal of manpower and material resources can be saved.
For the pressure measurement probe disclosed in the above embodiment, it can be further understood by those skilled in the art that the pressure measurement probe is designed such that the pressure contact piece 3 is clamped in the pressure contact groove on the support rod 1, so that the position of the pressure contact piece 3 can be effectively restrained, the pressure contact piece 3 can be reliably connected to the support rod 1 through the connecting bolt 4, and the surface of the support rod 1 cannot be protruded, so that the possibility of interference with a component when the pressure measurement probe is used is reduced.
For the pressure measurement probe disclosed in the above embodiment, it can be further understood by those skilled in the art that the pressure connection protrusion at the tail of each measuring head 2 is designed to be matched with the ball head conical surface between the transition parts of the corresponding stepped mounting holes on the supporting rod 1, so that on one hand, each measuring head 2 can be effectively stopped, and the reliable positioning of each measuring head is ensured, and on the other hand, reliable sealing can be formed between the pressure connection protrusion at the tail of each measuring head 2 and the transition part of the corresponding stepped mounting hole on the supporting rod 1, so as to avoid leakage at the position during pressure measurement.
For the pressure measurement probe disclosed in the above embodiment, it will be further understood by those skilled in the art that each stepped mounting hole is distributed at different positions on the supporting rod 1, and may have different angles with the axis of the supporting rod 1, and the number of the stepped mounting holes may be greater than the number of the measuring heads 2, and only part of the stepped mounting holes are provided with the measuring heads 2.
In some alternative embodiments, in the pressure measurement probe described above, the crimp tab 3 has a plurality of perforations therein;
the pressure guiding pipe led out from the tail of each measuring head 2 passes through a perforation.
In some alternative embodiments, in the pressure measurement probe described above, the crimp blade 3 is divided into multiple segments;
each segment of crimping piece 3 has at least one perforation and at least one crimping projection is compressed.
For the pressure measurement probe disclosed in the above embodiment, it can be understood by those skilled in the art that the design crimping piece 3 is divided into multiple sections, each section of crimping piece 3 can be connected to the supporting rod 1 through a plurality of connecting bolts 4, each section of crimping piece 3 has at least one perforation and at least one crimping bulge, and when the measuring head 2 is dismounted on the supporting rod 1, only the crimping piece 3 corresponding to the section of the measuring head 2 to be dismounted can be dismounted conveniently and quickly.
In some alternative embodiments, the angle of each mounting hole in the pressure measurement probe is between 75 ° and 90 ° from the axis of the strut 1.
In some alternative embodiments, in the pressure measurement probe described above, the ball taper angle between each crimp bulge and the transition of the corresponding stepped mounting hole is in the range of 60 ° to 120 °.
In some alternative embodiments, the pressure measurement probe further includes:
a plurality of gaskets 5, each gasket 5 is correspondingly arranged between one connecting bolt 4 and the crimping piece 3, so as to reduce the abrasion between the corresponding connecting bolt 4 and the crimping piece 3.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred.
Having thus described the technical aspects of the present application with reference to the preferred embodiments illustrated in the accompanying drawings, it should be understood by those skilled in the art that the scope of the present application is not limited to the specific embodiments, and those skilled in the art may make equivalent changes or substitutions to the relevant technical features without departing from the principles of the present application, and those changes or substitutions will now fall within the scope of the present application.
Claims (3)
1. A pressure measurement probe, comprising:
a support rod (1) which is provided with a plurality of stepped mounting holes and pressure welding grooves; the crimping groove is communicated with each stepped mounting hole;
a plurality of measuring heads (2), the tail parts of which are provided with crimping bulges; the head of each measuring head (2) passes through one stepped mounting hole;
a crimping piece (3) clamped in the crimping groove;
the connecting bolts (4) detachably connect the crimping pieces (3) on the supporting rods (1) to enable the crimping pieces (3) to press each crimping bulge, so that each crimping bulge is abutted against the transition part of the corresponding stepped mounting hole; the crimping protrusions are matched with ball heads at the transition parts of the corresponding stepped mounting holes in a conical surface manner; each measuring head (2) is pressed and fixed on the supporting rod (1) through the pressure welding piece (3);
the pressure welding groove can effectively restrict the position of the pressure welding sheet (3), so that the pressure welding sheet (3) can be reliably connected to the supporting rod (1) through the connecting bolt (4) without protruding out of the surface of the supporting rod (1), and the possibility of interference with a part when the pressure measurement probe is used can be reduced;
the crimping pieces (3) are divided into a plurality of sections, each section of crimping piece (3) is connected to the supporting rod (1) through a plurality of connecting bolts (4), each section of crimping piece (3) is provided with at least one through hole, at least one crimping bulge is pressed, a pressure guiding pipe led out from the tail of each measuring head (2) passes through the corresponding through hole, and when the measuring head (2) is dismounted on the supporting rod (1), only the crimping piece (3) corresponding to the section of the measuring head (2) to be dismounted can be dismounted;
the pressure measurement probe further comprises a plurality of gaskets (5), and each gasket (5) is correspondingly arranged between one connecting bolt (4) and the crimping piece (3).
2. A pressure measurement probe according to claim 1, wherein,
the angle between each mounting hole and the axis of the supporting rod (1) is 75-90 degrees.
3. A pressure measurement probe according to claim 1, wherein,
the cone angle of the ball head conical surface fit between the transition part of each crimping protrusion and the corresponding stepped mounting hole is 60-120 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210168534.XA CN114544076B (en) | 2022-02-23 | 2022-02-23 | Pressure measurement probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210168534.XA CN114544076B (en) | 2022-02-23 | 2022-02-23 | Pressure measurement probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114544076A CN114544076A (en) | 2022-05-27 |
| CN114544076B true CN114544076B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210168534.XA Active CN114544076B (en) | 2022-02-23 | 2022-02-23 | Pressure measurement probe |
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| CN (1) | CN114544076B (en) |
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Effective date of registration: 20240521 Address after: Shenhe District of Shenyang City, 110015 Wan Lin Road No. 1 in Liaoning Province Patentee after: SHENYANG HANGFA TECHNOLOGY INDUSTRIAL Co.,Ltd. Country or region after: China Address before: Shenhe District of Shenyang City, 110015 Wan Lin Road No. 1 in Liaoning Province Patentee before: AECC SHENYANG ENGINE Research Institute Country or region before: China |