CN112525043A - Clearance detection tool and method - Google Patents
Clearance detection tool and method Download PDFInfo
- Publication number
- CN112525043A CN112525043A CN202011380512.7A CN202011380512A CN112525043A CN 112525043 A CN112525043 A CN 112525043A CN 202011380512 A CN202011380512 A CN 202011380512A CN 112525043 A CN112525043 A CN 112525043A
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- Prior art keywords
- feeler
- gap
- face
- gauge
- contact block
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 9
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 239000004677 Nylon Substances 0.000 claims description 28
- 229920001778 nylon Polymers 0.000 claims description 28
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 210000000887 face Anatomy 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/46—Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a clearance detection tool and a clearance detection method. During measurement, the second surface of the contact block is attached to the wall surface of the tile; and then, the gauge sheet of the first feeler gauge is stretched into the gap between two adjacent tiles, and gauge sheets with different specifications on the first feeler gauge are used for measurement, so that the axial gap between two adjacent tiles is finally obtained. The invention can detect the axial assembly gap of the flame tube tile with the floating wall structure, ensures to obtain an accurate detection result, and has the advantages of low cost, high measurement speed and stable measurement result.
Description
Technical Field
The invention relates to the technical field of measuring tools, in particular to a gap detection tool and a gap detection method.
Background
The floating wall structure is used as an advanced structure of an aircraft engine flame tube, a bearing part and a heat bearing part are separated, and the outer layer is an integral ring part and bears pneumatic and mechanical loads; the inner layer is divided into independent pads in the axial direction and the circumferential direction and is installed on the outer layer bearing structure to bear heat load, the stress condition of the wall surface of the flame tube can be obviously improved, the service life is greatly prolonged, and the development trend of the flame tube of the aero-engine is shown. The layered structure of the floating wall flame tube brings convenience and feasibility for adopting advanced composite cooling technology.
The tile gaps of the flame tube with the floating wall structure play an important role in airflow flowing and heat exchange characteristics of the flame tube, and directly influence the wall temperature and the cooling effect of the combustion chamber. The axial gaps of the flame tube tiles of a certain floating wall structure are more, the outer-layer integral ring piece of the flame tube is a variable-angle molded surface and is divided into a plurality of layers, and each layer of tiles are assembled and are attached to the molded surface of the layer, so that the axial gaps of the tiles are in a horn mouth shape. The survey requirement of axial gap size is "being surveyed gap size and this layer tile assembly wall vertical measurement", because the clearance space is the horn mouth form and makes when using the feeler gauge to detect the angle totally by the artificial judgement of visualing of inspector, it is little when the angle is the obtuse angle to fill in the angle, it is big partially to fill in the angle when being the acute angle detection value, usually this angle difference can reach the millimeter level to the influence of testing result, lead to "a people to detect a result," the condition of diverse ", detection error is very big, lead to floating wall structure flame tube can't utilize accurate data to develop wall temperature optimization work.
Disclosure of Invention
In order to solve the problems existing in the center of the prior art, the invention aims to provide a gap detection tool and a gap detection method.
The purpose of the invention is realized by the following steps:
the utility model provides a clearance detects instrument, includes contact block and first clearance gauge, and the one end of contact block has a pair of adjacent and mutually perpendicular's face, and adjacent and mutually perpendicular's face is first face and second face respectively, and the one end of first clearance gauge is installed on first face, and the second face is perpendicular with first clearance gauge.
Preferably, the contact block is in the shape of a cylinder, and the first surface and the second surface are respectively an end surface and a side surface of the cylinder.
Preferably, the contact block is in the shape of a regular prism, a cylinder or an elliptic cylinder.
Preferably, the contact block is provided with a center hole penetrating through the contact block along a center axis, and one end of the first feeler gauge is mounted at the center hole.
Preferably, the second surface is a plane or an arc surface, and when the second surface is the arc surface, the second surface is in line contact with the contact surface of the part to be measured.
Preferably, the first surface is provided with a limiting groove for embedding one end of the first feeler gauge.
Preferably, one end of the first feeler is fixedly connected with the first surface through a screw.
Preferably, the other end of the contact block is provided with a pair of adjacent and mutually perpendicular faces, the adjacent and mutually perpendicular faces are respectively a third face and a fourth face, the third face is provided with a second clearance gauge, one end of the second clearance gauge is arranged on the third face, the fourth face is perpendicular to the second clearance gauge, and the direction of the second clearance gauge is opposite to that of the first clearance gauge. The second feeler mount may have the same corresponding structure at the first feeler mount.
Preferably, the contact block is made of nylon.
The invention also provides a gap detection method for measuring the axial gap of the flame tube tile with the floating wall structure, which is carried out by adopting the gap detection tool provided by the invention and comprises the following processes:
attaching the second surface of the contact block to the wall surface of the tile;
and then, the gauge sheet of the first feeler gauge is stretched into the gap between two adjacent tiles, and gauge sheets with different specifications on the first feeler gauge are used for measurement, so that the axial gap between two adjacent tiles is finally obtained.
The invention has the following beneficial effects:
the gap detection tool adopts the contact block, one end of the contact block is provided with a pair of adjacent and mutually vertical surfaces which are respectively a first surface and a second surface, one end of the first feeler is arranged on the first surface, the second surface is vertical to the first feeler, the second surface is used as a contact surface contacted with the wall surface of the tile to be detected during measurement, the first feeler and the wall surface of the tile can be ensured to be vertical through the first surface and the second surface, therefore, when the axial gap between the adjacent tiles is measured, the angle of the first feeler is ensured due to the supporting and positioning action of the contact block, the problem that the plugging angle of the feeler is completely judged by naked eyes and the detection error of the detection result is extremely large and is difficult to control due to the change of the angle is avoided, and the detection result is more accurate by utilizing the gap detection tool of the invention, but also can improve the measurement efficiency.
Furthermore, when the shape of the contact block is a cylinder or an elliptic cylinder, the contact area between the contact block and the wall surface of the tile can be reduced, and the abrasion of the coating on the wall surface of the tile caused by clearance measurement is reduced.
Furthermore, the contact block is provided with a center hole penetrating through the contact block along the center shaft, and the deformation of the contact block caused by temperature or internal stress and the like can be reduced by utilizing the center hole, so that the progress of a detection result is improved.
Furthermore, set up the spacing recess that supplies the one end embedding of first clearance gauge on the first face, can ensure the position of first clearance gauge through spacing recess, convenient measurement.
Furthermore, through setting up the second clearance gauge, can utilize the second clearance gauge to carry out retest, improve the accuracy of testing result.
Furthermore, the material of contact piece is nylon, and the nylon texture is softer, can prevent to damage the coating on the tile wall.
The gap detection method is carried out by adopting the gap detection tool, so that the defects of unstable and inaccurate measurement result in artificial experience measurement can be avoided, the measurement process is convenient and fast, and the detection efficiency is improved.
Drawings
FIG. 1 is a longitudinal sectional view showing a structure of a gap detecting tool according to the present invention.
Fig. 2(a) is a schematic view of an axial gap of a floating wall structure flame tube, and fig. 2(b) is an enlarged view of a portion a of fig. 2 (a).
FIG. 3 is a schematic view of a floating wall structure liner tile axial gap as detected using the gap detection tool of the present invention.
In the figure, 1-screw, 2-feeler gauge, 3-contact block, 3-1-center hole, 4-tile, 4-1-tile wall, 5-second layer tile, 6-third layer tile.
Detailed Description
The invention is further described below with reference to the figures and examples.
Referring to fig. 1 and 3, the gap detection tool of the present invention includes a contact block 3 and a first feeler, one end of the contact block 3 has a pair of adjacent and mutually perpendicular surfaces, the adjacent and mutually perpendicular surfaces are a first surface and a second surface, respectively, one end of the first feeler is mounted on the first surface, and the second surface is perpendicular to the first feeler.
As a preferred embodiment of the present invention, the contact block 3 is shaped as a cylinder, and the first and second faces are end and side faces of the cylinder, respectively.
As a preferred embodiment of the present invention, the contact block 3 has a shape of a regular prism, a cylinder, or an elliptic cylinder.
As a preferred embodiment of the invention, the contact block 3 is provided with a central hole 3-1 penetrating through the contact block 3 along the central axis, and one end of the first feeler gauge is arranged at the central hole.
As a preferable embodiment of the invention, the second surface is a plane or an arc surface, and when the second surface is the arc surface, the second surface is in line contact with the contact surface of the part to be measured.
As a preferable embodiment of the invention, the first surface is provided with a limit groove for embedding one end of the first feeler, the width of the limit groove is equal to that of the first feeler, and the first feeler can be just embedded into the limit groove.
As a preferred embodiment of the invention, one end of the first feeler is fixedly connected with the first surface through a screw 1.
In a preferred embodiment of the present invention, the other end of the contact block 3 has a pair of adjacent and perpendicular surfaces, the adjacent and perpendicular surfaces are a third surface and a fourth surface, respectively, the third surface is provided with a second feeler, one end of the second feeler is provided on the third surface, the fourth surface is perpendicular to the second feeler, and the second feeler is opposite to the first feeler. The second feeler mount may have the same corresponding structure at the first feeler mount.
In a preferred embodiment of the present invention, the contact block 3 is made of nylon.
Referring to fig. 2(a), 2(b) and 3, the gap detection method of the present invention for measuring the axial gap of the liner tile of the floating wall structure is performed by using the gap detection tool of the present invention, and comprises the following processes:
attaching the second surface of the contact block 3 to the wall surface 4-1 of the tile;
and then extending the gauge sheet of the first feeler gauge into the gap between two adjacent tiles 4, and measuring by using gauge sheets with different specifications on the first feeler gauge to finally obtain the axial gap between two adjacent tiles 4.
Examples
The clearance measuring tool of the embodiment comprises a screw 1, a feeler 2 and a contact block 3, wherein the contact block 3 is a nylon sleeve, as shown in fig. 1, the nylon sleeve 3 is a cylinder, a center hole 3-1 is formed in the center of the nylon sleeve, screw holes are formed in two ends of the center hole 3-1, one end of the feeler 2 is installed on the end face of the nylon sleeve through the screw and the screw holes, and the feeler is ensured to be perpendicular to the axis of the nylon sleeve; the cylindrical surface of the nylon sleeve can be attached to the contact surface of the tile wall surface and is in line contact, so that the feeler gauge is indirectly ensured to be perpendicular to the tile wall surface, and the detection accuracy is ensured; the gauge pieces with different specifications are used for trial plugging and reading to obtain the accurate axial gap size of the tile, and meanwhile, the tool can be attached to the molded surface to ensure the gap during tile assembly and then the tile is fixed and locked, as shown in FIG. 3; the shape of the nylon sleeve can be changed into different structures according to the shape of the detected contact surface, for example, a cuboid is used for surface contact.
When the gap detection tool with the structure is used for detecting the axial gap of the flame tube tile with the floating wall structure, the axial gap of the flame tube tile with the floating wall structure is as follows:
(1) manufacturing a nylon sleeve with the diameter phi D: according to the size of the tile, the diameter D of a cylindrical sleeve body (hereinafter referred to as a nylon sleeve) made of nylon is selected to be prevented from being too small so as to ensure that a fastening screw cannot interfere with a part body;
(2) the general feeler gauge is fixed on the end surface of the nylon sleeve by penetrating a screw through a threaded hole in the center of the nylon sleeve (the general feeler gauge is provided with a through hole per se) to ensure that the general feeler gauge is attached to the end surface of the nylon sleeve;
(3) attaching a nylon sleeve with a feeler gauge on the end face to a measured profile tile block;
(4) and plugging a feeler gauge on the end face of the nylon sleeve into the axial gap of the molded surface to be tested, and repeating the process by using gauge sheets with different specifications to test and finish accurate measurement and reading of the gap value.
The clearance measuring tool and the measuring method have the advantages that: 1 detect accurately, because the clearance is the horn mouth form when conventional feeler gauge detects, the angle of plugging in of feeler gauge is responsible for the judgement by the naked eye completely, and the change of angle causes the detection error of testing result very big. The invention can avoid the detection error, and the plugging direction of the feeler gauge ensures the perpendicularity with the nylon sleeve, thereby ensuring the perpendicularity of the feeler gauge and the tile assembly wall surface. 2, the detection cost is low, under the condition that the universal feeler gauge cannot be used, detection tools in the market, such as white light scanning, laser induction and other detection equipment, need more than 10 ten thousand RMB, and the total cost of the nylon sleeve, the universal feeler gauge, the fixing screw and the like related to the invention is about 100 yuan. 3 because the surface of the flame tube tile with the floating wall structure generally has a coating, the nylon material can ensure that the coating can not fall off when the nylon sleeve cylindrical surface contacts with the tile to be measured, and the protective action can eliminate the risk of falling off caused by the contact with the tile coating surface. 4, the specification of the central threaded hole of the nylon sleeve can be matched according to the specification of the screw which actually exists on site, and the nylon sleeve has strong interchangeability and convenience. 5 nylon cover both ends all can detect through central screw hole, fixed clearance gauge, have improved detection efficiency. 6 the tool can also be used as an auxiliary tool for adjusting the time gap of the tile assembly, and the tile is locked after the feeler gauge is plugged into the assembly gap. 7 the cylindrical structure of the nylon sleeve is convenient for being attached to the assembling molded surface of the tile to ensure that the tile is vertical to the wall surface. When a similar structure needs to be measured, the dragon sleeve can be replaced by a cuboid and other geometric bodies which are adaptive to the binding surface, such as the cuboid, and the like, from columnar adaptability. The method has low detection cost, and the detection precision can reach 0.01 mm.
Claims (10)
1. The utility model provides a clearance detects instrument, its characterized in that includes contact block (3) and first clearance gauge, and the one end of contact block (3) has a pair of adjacent and mutually perpendicular face, and adjacent and mutually perpendicular face is first face and second face respectively, and the one end of first clearance gauge is installed on first face, and the second face is perpendicular with first clearance gauge.
2. A gap sensing tool according to claim 1, wherein the contact block (3) is shaped as a cylinder, and the first and second faces are end and side faces of the cylinder, respectively.
3. A gap detection tool according to claim 2, characterized in that the contact block (3) has the shape of a regular prism, a cylinder or an elliptic cylinder.
4. A gap detecting tool according to claim 2, wherein the contact block (3) is provided with a central hole penetrating through the contact block (3) along the central axis, and one end of the first feeler gauge is mounted at the central hole.
5. The gap detection tool according to claim 1, wherein the second surface is a plane or an arc surface, and when the second surface is an arc surface, the second surface is in line contact with the contact surface of the measured part.
6. The clearance detecting tool of claim 1, wherein the first surface defines a limiting recess into which an end of the first feeler is inserted.
7. A gap detection tool according to claim 1, wherein one end of the first feeler is fixedly connected to the first face by means of a screw (1).
8. A gap sensing tool according to claim 1, wherein the other end of the contact block (3) has a pair of adjacent and mutually perpendicular faces, the adjacent and mutually perpendicular faces being a third face and a fourth face respectively, the third face having a second feeler mounted thereon, one end of the second feeler being mounted on the third face, the fourth face being perpendicular to the second feeler, the second feeler being opposite to the first feeler.
9. A gap detection tool according to any one of claims 1-8, characterized in that the contact block (3) is made of nylon.
10. A gap sensing method for measuring axial gap of a liner tile of a floating wall structure by using the gap sensing tool of any one of claims 1-9, comprising the steps of:
attaching the second surface of the contact block (3) to the wall surface (4-1) of the tile;
and then, the gauge sheet of the first feeler gauge is stretched into the gap between two adjacent tiles (4), and gauge sheets with different specifications on the first feeler gauge are used for measurement, so that the axial gap between two adjacent tiles (4) is finally obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011380512.7A CN112525043A (en) | 2020-11-30 | 2020-11-30 | Clearance detection tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011380512.7A CN112525043A (en) | 2020-11-30 | 2020-11-30 | Clearance detection tool and method |
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| Publication Number | Publication Date |
|---|---|
| CN112525043A true CN112525043A (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011380512.7A Pending CN112525043A (en) | 2020-11-30 | 2020-11-30 | Clearance detection tool and method |
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| CN (1) | CN112525043A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0961102A (en) * | 1995-08-30 | 1997-03-07 | Yokogawa Electric Corp | Screw plug gauge |
| CN2674397Y (en) * | 2003-12-12 | 2005-01-26 | 东方汽轮机厂 | Plug gauge |
| CN201844771U (en) * | 2010-10-28 | 2011-05-25 | 胡世章 | Gap testing filler gauge |
| CN102410801A (en) * | 2011-10-25 | 2012-04-11 | 潍柴动力股份有限公司 | Measuring tool |
| CN204045145U (en) * | 2014-06-30 | 2014-12-24 | 上虞市万舜电子科技有限公司 | A kind of arc-shaped LED display screen |
| CN207365882U (en) * | 2017-09-13 | 2018-05-15 | 广州市新誉工程咨询有限公司 | A kind of project supervision wedge-shaped feeler gauge |
| CN207881623U (en) * | 2018-02-10 | 2018-09-18 | 北京市建设工程质量第二检测所有限公司 | Detect guiding ruler |
| CN210512957U (en) * | 2019-10-28 | 2020-05-12 | 四川省特种设备检验研究院 | Multifunctional measuring feeler gauge |
| CN211317160U (en) * | 2019-12-18 | 2020-08-21 | 北京市质易达工程监理有限责任公司 | Wedge-shaped clearance gauge for engineering supervision |
-
2020
- 2020-11-30 CN CN202011380512.7A patent/CN112525043A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0961102A (en) * | 1995-08-30 | 1997-03-07 | Yokogawa Electric Corp | Screw plug gauge |
| CN2674397Y (en) * | 2003-12-12 | 2005-01-26 | 东方汽轮机厂 | Plug gauge |
| CN201844771U (en) * | 2010-10-28 | 2011-05-25 | 胡世章 | Gap testing filler gauge |
| CN102410801A (en) * | 2011-10-25 | 2012-04-11 | 潍柴动力股份有限公司 | Measuring tool |
| CN204045145U (en) * | 2014-06-30 | 2014-12-24 | 上虞市万舜电子科技有限公司 | A kind of arc-shaped LED display screen |
| CN207365882U (en) * | 2017-09-13 | 2018-05-15 | 广州市新誉工程咨询有限公司 | A kind of project supervision wedge-shaped feeler gauge |
| CN207881623U (en) * | 2018-02-10 | 2018-09-18 | 北京市建设工程质量第二检测所有限公司 | Detect guiding ruler |
| CN210512957U (en) * | 2019-10-28 | 2020-05-12 | 四川省特种设备检验研究院 | Multifunctional measuring feeler gauge |
| CN211317160U (en) * | 2019-12-18 | 2020-08-21 | 北京市质易达工程监理有限责任公司 | Wedge-shaped clearance gauge for engineering supervision |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |
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| RJ01 | Rejection of invention patent application after publication |